Vendor main dependencies.

This commit is contained in:
Timo Reimann 2017-02-07 22:33:23 +01:00
parent 49a09ab7dd
commit dd5e3fba01
2738 changed files with 1045689 additions and 0 deletions

22
vendor/github.com/emicklei/go-restful/LICENSE generated vendored Normal file
View file

@ -0,0 +1,22 @@
Copyright (c) 2012,2013 Ernest Micklei
MIT License
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

87
vendor/github.com/emicklei/go-restful/compress.go generated vendored Normal file
View file

@ -0,0 +1,87 @@
package restful
// Copyright 2013 Ernest Micklei. All rights reserved.
// Use of this source code is governed by a license
// that can be found in the LICENSE file.
import (
"compress/gzip"
"compress/zlib"
"errors"
"io"
"net/http"
"strings"
)
// OBSOLETE : use restful.DefaultContainer.EnableContentEncoding(true) to change this setting.
var EnableContentEncoding = false
// CompressingResponseWriter is a http.ResponseWriter that can perform content encoding (gzip and zlib)
type CompressingResponseWriter struct {
writer http.ResponseWriter
compressor io.WriteCloser
}
// Header is part of http.ResponseWriter interface
func (c *CompressingResponseWriter) Header() http.Header {
return c.writer.Header()
}
// WriteHeader is part of http.ResponseWriter interface
func (c *CompressingResponseWriter) WriteHeader(status int) {
c.writer.WriteHeader(status)
}
// Write is part of http.ResponseWriter interface
// It is passed through the compressor
func (c *CompressingResponseWriter) Write(bytes []byte) (int, error) {
return c.compressor.Write(bytes)
}
// CloseNotify is part of http.CloseNotifier interface
func (c *CompressingResponseWriter) CloseNotify() <-chan bool {
return c.writer.(http.CloseNotifier).CloseNotify()
}
// Close the underlying compressor
func (c *CompressingResponseWriter) Close() {
c.compressor.Close()
}
// WantsCompressedResponse reads the Accept-Encoding header to see if and which encoding is requested.
func wantsCompressedResponse(httpRequest *http.Request) (bool, string) {
header := httpRequest.Header.Get(HEADER_AcceptEncoding)
gi := strings.Index(header, ENCODING_GZIP)
zi := strings.Index(header, ENCODING_DEFLATE)
// use in order of appearance
if gi == -1 {
return zi != -1, ENCODING_DEFLATE
} else if zi == -1 {
return gi != -1, ENCODING_GZIP
} else {
if gi < zi {
return true, ENCODING_GZIP
}
return true, ENCODING_DEFLATE
}
}
// NewCompressingResponseWriter create a CompressingResponseWriter for a known encoding = {gzip,deflate}
func NewCompressingResponseWriter(httpWriter http.ResponseWriter, encoding string) (*CompressingResponseWriter, error) {
httpWriter.Header().Set(HEADER_ContentEncoding, encoding)
c := new(CompressingResponseWriter)
c.writer = httpWriter
var err error
if ENCODING_GZIP == encoding {
w := GzipWriterPool.Get().(*gzip.Writer)
w.Reset(httpWriter)
c.compressor = w
} else if ENCODING_DEFLATE == encoding {
w := ZlibWriterPool.Get().(*zlib.Writer)
w.Reset(httpWriter)
c.compressor = w
} else {
return nil, errors.New("Unknown encoding:" + encoding)
}
return c, err
}

View file

@ -0,0 +1,63 @@
package restful
import (
"bytes"
"compress/gzip"
"compress/zlib"
"sync"
)
// GzipWriterPool is used to get reusable zippers.
// The Get() result must be type asserted to *gzip.Writer.
var GzipWriterPool = &sync.Pool{
New: func() interface{} {
return newGzipWriter()
},
}
func newGzipWriter() *gzip.Writer {
// create with an empty bytes writer; it will be replaced before using the gzipWriter
writer, err := gzip.NewWriterLevel(new(bytes.Buffer), gzip.BestSpeed)
if err != nil {
panic(err.Error())
}
return writer
}
// GzipReaderPool is used to get reusable zippers.
// The Get() result must be type asserted to *gzip.Reader.
var GzipReaderPool = &sync.Pool{
New: func() interface{} {
return newGzipReader()
},
}
func newGzipReader() *gzip.Reader {
// create with an empty reader (but with GZIP header); it will be replaced before using the gzipReader
w := GzipWriterPool.Get().(*gzip.Writer)
b := new(bytes.Buffer)
w.Reset(b)
w.Flush()
w.Close()
reader, err := gzip.NewReader(bytes.NewReader(b.Bytes()))
if err != nil {
panic(err.Error())
}
return reader
}
// ZlibWriterPool is used to get reusable zippers.
// The Get() result must be type asserted to *zlib.Writer.
var ZlibWriterPool = &sync.Pool{
New: func() interface{} {
return newZlibWriter()
},
}
func newZlibWriter() *zlib.Writer {
writer, err := zlib.NewWriterLevel(new(bytes.Buffer), gzip.BestSpeed)
if err != nil {
panic(err.Error())
}
return writer
}

30
vendor/github.com/emicklei/go-restful/constants.go generated vendored Normal file
View file

@ -0,0 +1,30 @@
package restful
// Copyright 2013 Ernest Micklei. All rights reserved.
// Use of this source code is governed by a license
// that can be found in the LICENSE file.
const (
MIME_XML = "application/xml" // Accept or Content-Type used in Consumes() and/or Produces()
MIME_JSON = "application/json" // Accept or Content-Type used in Consumes() and/or Produces()
MIME_OCTET = "application/octet-stream" // If Content-Type is not present in request, use the default
HEADER_Allow = "Allow"
HEADER_Accept = "Accept"
HEADER_Origin = "Origin"
HEADER_ContentType = "Content-Type"
HEADER_LastModified = "Last-Modified"
HEADER_AcceptEncoding = "Accept-Encoding"
HEADER_ContentEncoding = "Content-Encoding"
HEADER_AccessControlExposeHeaders = "Access-Control-Expose-Headers"
HEADER_AccessControlRequestMethod = "Access-Control-Request-Method"
HEADER_AccessControlRequestHeaders = "Access-Control-Request-Headers"
HEADER_AccessControlAllowMethods = "Access-Control-Allow-Methods"
HEADER_AccessControlAllowOrigin = "Access-Control-Allow-Origin"
HEADER_AccessControlAllowCredentials = "Access-Control-Allow-Credentials"
HEADER_AccessControlAllowHeaders = "Access-Control-Allow-Headers"
HEADER_AccessControlMaxAge = "Access-Control-Max-Age"
ENCODING_GZIP = "gzip"
ENCODING_DEFLATE = "deflate"
)

338
vendor/github.com/emicklei/go-restful/container.go generated vendored Normal file
View file

@ -0,0 +1,338 @@
package restful
// Copyright 2013 Ernest Micklei. All rights reserved.
// Use of this source code is governed by a license
// that can be found in the LICENSE file.
import (
"bytes"
"fmt"
"net/http"
"os"
"runtime"
"strings"
"sync"
"github.com/emicklei/go-restful/log"
)
// Container holds a collection of WebServices and a http.ServeMux to dispatch http requests.
// The requests are further dispatched to routes of WebServices using a RouteSelector
type Container struct {
webServicesLock sync.RWMutex
webServices []*WebService
ServeMux *http.ServeMux
isRegisteredOnRoot bool
containerFilters []FilterFunction
doNotRecover bool // default is false
recoverHandleFunc RecoverHandleFunction
serviceErrorHandleFunc ServiceErrorHandleFunction
router RouteSelector // default is a RouterJSR311, CurlyRouter is the faster alternative
contentEncodingEnabled bool // default is false
}
// NewContainer creates a new Container using a new ServeMux and default router (RouterJSR311)
func NewContainer() *Container {
return &Container{
webServices: []*WebService{},
ServeMux: http.NewServeMux(),
isRegisteredOnRoot: false,
containerFilters: []FilterFunction{},
doNotRecover: false,
recoverHandleFunc: logStackOnRecover,
serviceErrorHandleFunc: writeServiceError,
router: RouterJSR311{},
contentEncodingEnabled: false}
}
// RecoverHandleFunction declares functions that can be used to handle a panic situation.
// The first argument is what recover() returns. The second must be used to communicate an error response.
type RecoverHandleFunction func(interface{}, http.ResponseWriter)
// RecoverHandler changes the default function (logStackOnRecover) to be called
// when a panic is detected. DoNotRecover must be have its default value (=false).
func (c *Container) RecoverHandler(handler RecoverHandleFunction) {
c.recoverHandleFunc = handler
}
// ServiceErrorHandleFunction declares functions that can be used to handle a service error situation.
// The first argument is the service error, the second is the request that resulted in the error and
// the third must be used to communicate an error response.
type ServiceErrorHandleFunction func(ServiceError, *Request, *Response)
// ServiceErrorHandler changes the default function (writeServiceError) to be called
// when a ServiceError is detected.
func (c *Container) ServiceErrorHandler(handler ServiceErrorHandleFunction) {
c.serviceErrorHandleFunc = handler
}
// DoNotRecover controls whether panics will be caught to return HTTP 500.
// If set to true, Route functions are responsible for handling any error situation.
// Default value is false = recover from panics. This has performance implications.
func (c *Container) DoNotRecover(doNot bool) {
c.doNotRecover = doNot
}
// Router changes the default Router (currently RouterJSR311)
func (c *Container) Router(aRouter RouteSelector) {
c.router = aRouter
}
// EnableContentEncoding (default=false) allows for GZIP or DEFLATE encoding of responses.
func (c *Container) EnableContentEncoding(enabled bool) {
c.contentEncodingEnabled = enabled
}
// Add a WebService to the Container. It will detect duplicate root paths and panic in that case.
func (c *Container) Add(service *WebService) *Container {
c.webServicesLock.Lock()
defer c.webServicesLock.Unlock()
// If registered on root then no additional specific mapping is needed
if !c.isRegisteredOnRoot {
pattern := c.fixedPrefixPath(service.RootPath())
// check if root path registration is needed
if "/" == pattern || "" == pattern {
c.ServeMux.HandleFunc("/", c.dispatch)
c.isRegisteredOnRoot = true
} else {
// detect if registration already exists
alreadyMapped := false
for _, each := range c.webServices {
if each.RootPath() == service.RootPath() {
alreadyMapped = true
break
}
}
if !alreadyMapped {
c.ServeMux.HandleFunc(pattern, c.dispatch)
if !strings.HasSuffix(pattern, "/") {
c.ServeMux.HandleFunc(pattern+"/", c.dispatch)
}
}
}
}
// cannot have duplicate root paths
for _, each := range c.webServices {
if each.RootPath() == service.RootPath() {
log.Printf("[restful] WebService with duplicate root path detected:['%v']", each)
os.Exit(1)
}
}
// if rootPath was not set then lazy initialize it
if len(service.rootPath) == 0 {
service.Path("/")
}
c.webServices = append(c.webServices, service)
return c
}
func (c *Container) Remove(ws *WebService) error {
c.webServicesLock.Lock()
defer c.webServicesLock.Unlock()
newServices := []*WebService{}
for ix := range c.webServices {
if c.webServices[ix].rootPath != ws.rootPath {
newServices = append(newServices, c.webServices[ix])
}
}
c.webServices = newServices
return nil
}
// logStackOnRecover is the default RecoverHandleFunction and is called
// when DoNotRecover is false and the recoverHandleFunc is not set for the container.
// Default implementation logs the stacktrace and writes the stacktrace on the response.
// This may be a security issue as it exposes sourcecode information.
func logStackOnRecover(panicReason interface{}, httpWriter http.ResponseWriter) {
var buffer bytes.Buffer
buffer.WriteString(fmt.Sprintf("[restful] recover from panic situation: - %v\r\n", panicReason))
for i := 2; ; i += 1 {
_, file, line, ok := runtime.Caller(i)
if !ok {
break
}
buffer.WriteString(fmt.Sprintf(" %s:%d\r\n", file, line))
}
log.Print(buffer.String())
httpWriter.WriteHeader(http.StatusInternalServerError)
httpWriter.Write(buffer.Bytes())
}
// writeServiceError is the default ServiceErrorHandleFunction and is called
// when a ServiceError is returned during route selection. Default implementation
// calls resp.WriteErrorString(err.Code, err.Message)
func writeServiceError(err ServiceError, req *Request, resp *Response) {
resp.WriteErrorString(err.Code, err.Message)
}
// Dispatch the incoming Http Request to a matching WebService.
func (c *Container) dispatch(httpWriter http.ResponseWriter, httpRequest *http.Request) {
writer := httpWriter
// CompressingResponseWriter should be closed after all operations are done
defer func() {
if compressWriter, ok := writer.(*CompressingResponseWriter); ok {
compressWriter.Close()
}
}()
// Instal panic recovery unless told otherwise
if !c.doNotRecover { // catch all for 500 response
defer func() {
if r := recover(); r != nil {
c.recoverHandleFunc(r, writer)
return
}
}()
}
// Install closing the request body (if any)
defer func() {
if nil != httpRequest.Body {
httpRequest.Body.Close()
}
}()
// Detect if compression is needed
// assume without compression, test for override
if c.contentEncodingEnabled {
doCompress, encoding := wantsCompressedResponse(httpRequest)
if doCompress {
var err error
writer, err = NewCompressingResponseWriter(httpWriter, encoding)
if err != nil {
log.Print("[restful] unable to install compressor: ", err)
httpWriter.WriteHeader(http.StatusInternalServerError)
return
}
}
}
// Find best match Route ; err is non nil if no match was found
var webService *WebService
var route *Route
var err error
func() {
c.webServicesLock.RLock()
defer c.webServicesLock.RUnlock()
webService, route, err = c.router.SelectRoute(
c.webServices,
httpRequest)
}()
if err != nil {
// a non-200 response has already been written
// run container filters anyway ; they should not touch the response...
chain := FilterChain{Filters: c.containerFilters, Target: func(req *Request, resp *Response) {
switch err.(type) {
case ServiceError:
ser := err.(ServiceError)
c.serviceErrorHandleFunc(ser, req, resp)
}
// TODO
}}
chain.ProcessFilter(NewRequest(httpRequest), NewResponse(writer))
return
}
wrappedRequest, wrappedResponse := route.wrapRequestResponse(writer, httpRequest)
// pass through filters (if any)
if len(c.containerFilters)+len(webService.filters)+len(route.Filters) > 0 {
// compose filter chain
allFilters := []FilterFunction{}
allFilters = append(allFilters, c.containerFilters...)
allFilters = append(allFilters, webService.filters...)
allFilters = append(allFilters, route.Filters...)
chain := FilterChain{Filters: allFilters, Target: func(req *Request, resp *Response) {
// handle request by route after passing all filters
route.Function(wrappedRequest, wrappedResponse)
}}
chain.ProcessFilter(wrappedRequest, wrappedResponse)
} else {
// no filters, handle request by route
route.Function(wrappedRequest, wrappedResponse)
}
}
// fixedPrefixPath returns the fixed part of the partspec ; it may include template vars {}
func (c Container) fixedPrefixPath(pathspec string) string {
varBegin := strings.Index(pathspec, "{")
if -1 == varBegin {
return pathspec
}
return pathspec[:varBegin]
}
// ServeHTTP implements net/http.Handler therefore a Container can be a Handler in a http.Server
func (c Container) ServeHTTP(httpwriter http.ResponseWriter, httpRequest *http.Request) {
c.ServeMux.ServeHTTP(httpwriter, httpRequest)
}
// Handle registers the handler for the given pattern. If a handler already exists for pattern, Handle panics.
func (c Container) Handle(pattern string, handler http.Handler) {
c.ServeMux.Handle(pattern, handler)
}
// HandleWithFilter registers the handler for the given pattern.
// Container's filter chain is applied for handler.
// If a handler already exists for pattern, HandleWithFilter panics.
func (c Container) HandleWithFilter(pattern string, handler http.Handler) {
f := func(httpResponse http.ResponseWriter, httpRequest *http.Request) {
if len(c.containerFilters) == 0 {
handler.ServeHTTP(httpResponse, httpRequest)
return
}
chain := FilterChain{Filters: c.containerFilters, Target: func(req *Request, resp *Response) {
handler.ServeHTTP(httpResponse, httpRequest)
}}
chain.ProcessFilter(NewRequest(httpRequest), NewResponse(httpResponse))
}
c.Handle(pattern, http.HandlerFunc(f))
}
// Filter appends a container FilterFunction. These are called before dispatching
// a http.Request to a WebService from the container
func (c *Container) Filter(filter FilterFunction) {
c.containerFilters = append(c.containerFilters, filter)
}
// RegisteredWebServices returns the collections of added WebServices
func (c Container) RegisteredWebServices() []*WebService {
c.webServicesLock.RLock()
defer c.webServicesLock.RUnlock()
result := make([]*WebService, len(c.webServices))
for ix := range c.webServices {
result[ix] = c.webServices[ix]
}
return result
}
// computeAllowedMethods returns a list of HTTP methods that are valid for a Request
func (c Container) computeAllowedMethods(req *Request) []string {
// Go through all RegisteredWebServices() and all its Routes to collect the options
methods := []string{}
requestPath := req.Request.URL.Path
for _, ws := range c.RegisteredWebServices() {
matches := ws.pathExpr.Matcher.FindStringSubmatch(requestPath)
if matches != nil {
finalMatch := matches[len(matches)-1]
for _, rt := range ws.Routes() {
matches := rt.pathExpr.Matcher.FindStringSubmatch(finalMatch)
if matches != nil {
lastMatch := matches[len(matches)-1]
if lastMatch == "" || lastMatch == "/" { // do not include if value is neither empty nor /.
methods = append(methods, rt.Method)
}
}
}
}
}
// methods = append(methods, "OPTIONS") not sure about this
return methods
}
// newBasicRequestResponse creates a pair of Request,Response from its http versions.
// It is basic because no parameter or (produces) content-type information is given.
func newBasicRequestResponse(httpWriter http.ResponseWriter, httpRequest *http.Request) (*Request, *Response) {
resp := NewResponse(httpWriter)
resp.requestAccept = httpRequest.Header.Get(HEADER_Accept)
return NewRequest(httpRequest), resp
}

172
vendor/github.com/emicklei/go-restful/cors_filter.go generated vendored Normal file
View file

@ -0,0 +1,172 @@
package restful
// Copyright 2013 Ernest Micklei. All rights reserved.
// Use of this source code is governed by a license
// that can be found in the LICENSE file.
import (
"strconv"
"strings"
)
// CrossOriginResourceSharing is used to create a Container Filter that implements CORS.
// Cross-origin resource sharing (CORS) is a mechanism that allows JavaScript on a web page
// to make XMLHttpRequests to another domain, not the domain the JavaScript originated from.
//
// http://en.wikipedia.org/wiki/Cross-origin_resource_sharing
// http://enable-cors.org/server.html
// http://www.html5rocks.com/en/tutorials/cors/#toc-handling-a-not-so-simple-request
type CrossOriginResourceSharing struct {
ExposeHeaders []string // list of Header names
AllowedHeaders []string // list of Header names
AllowedDomains []string // list of allowed values for Http Origin. If empty all are allowed.
AllowedMethods []string
MaxAge int // number of seconds before requiring new Options request
CookiesAllowed bool
Container *Container
}
// Filter is a filter function that implements the CORS flow as documented on http://enable-cors.org/server.html
// and http://www.html5rocks.com/static/images/cors_server_flowchart.png
func (c CrossOriginResourceSharing) Filter(req *Request, resp *Response, chain *FilterChain) {
origin := req.Request.Header.Get(HEADER_Origin)
if len(origin) == 0 {
if trace {
traceLogger.Print("no Http header Origin set")
}
chain.ProcessFilter(req, resp)
return
}
if len(c.AllowedDomains) > 0 { // if provided then origin must be included
included := false
for _, each := range c.AllowedDomains {
if each == origin {
included = true
break
}
}
if !included {
if trace {
traceLogger.Printf("HTTP Origin:%s is not part of %v", origin, c.AllowedDomains)
}
chain.ProcessFilter(req, resp)
return
}
}
if req.Request.Method != "OPTIONS" {
c.doActualRequest(req, resp)
chain.ProcessFilter(req, resp)
return
}
if acrm := req.Request.Header.Get(HEADER_AccessControlRequestMethod); acrm != "" {
c.doPreflightRequest(req, resp)
} else {
c.doActualRequest(req, resp)
chain.ProcessFilter(req, resp)
return
}
}
func (c CrossOriginResourceSharing) doActualRequest(req *Request, resp *Response) {
c.setOptionsHeaders(req, resp)
// continue processing the response
}
func (c *CrossOriginResourceSharing) doPreflightRequest(req *Request, resp *Response) {
if len(c.AllowedMethods) == 0 {
c.AllowedMethods = c.Container.computeAllowedMethods(req)
}
acrm := req.Request.Header.Get(HEADER_AccessControlRequestMethod)
if !c.isValidAccessControlRequestMethod(acrm, c.AllowedMethods) {
if trace {
traceLogger.Printf("Http header %s:%s is not in %v",
HEADER_AccessControlRequestMethod,
acrm,
c.AllowedMethods)
}
return
}
acrhs := req.Request.Header.Get(HEADER_AccessControlRequestHeaders)
if len(acrhs) > 0 {
for _, each := range strings.Split(acrhs, ",") {
if !c.isValidAccessControlRequestHeader(strings.Trim(each, " ")) {
if trace {
traceLogger.Printf("Http header %s:%s is not in %v",
HEADER_AccessControlRequestHeaders,
acrhs,
c.AllowedHeaders)
}
return
}
}
}
resp.AddHeader(HEADER_AccessControlAllowMethods, strings.Join(c.AllowedMethods, ","))
resp.AddHeader(HEADER_AccessControlAllowHeaders, acrhs)
c.setOptionsHeaders(req, resp)
// return http 200 response, no body
}
func (c CrossOriginResourceSharing) setOptionsHeaders(req *Request, resp *Response) {
c.checkAndSetExposeHeaders(resp)
c.setAllowOriginHeader(req, resp)
c.checkAndSetAllowCredentials(resp)
if c.MaxAge > 0 {
resp.AddHeader(HEADER_AccessControlMaxAge, strconv.Itoa(c.MaxAge))
}
}
func (c CrossOriginResourceSharing) isOriginAllowed(origin string) bool {
if len(origin) == 0 {
return false
}
if len(c.AllowedDomains) == 0 {
return true
}
allowed := false
for _, each := range c.AllowedDomains {
if each == origin {
allowed = true
break
}
}
return allowed
}
func (c CrossOriginResourceSharing) setAllowOriginHeader(req *Request, resp *Response) {
origin := req.Request.Header.Get(HEADER_Origin)
if c.isOriginAllowed(origin) {
resp.AddHeader(HEADER_AccessControlAllowOrigin, origin)
}
}
func (c CrossOriginResourceSharing) checkAndSetExposeHeaders(resp *Response) {
if len(c.ExposeHeaders) > 0 {
resp.AddHeader(HEADER_AccessControlExposeHeaders, strings.Join(c.ExposeHeaders, ","))
}
}
func (c CrossOriginResourceSharing) checkAndSetAllowCredentials(resp *Response) {
if c.CookiesAllowed {
resp.AddHeader(HEADER_AccessControlAllowCredentials, "true")
}
}
func (c CrossOriginResourceSharing) isValidAccessControlRequestMethod(method string, allowedMethods []string) bool {
for _, each := range allowedMethods {
if each == method {
return true
}
}
return false
}
func (c CrossOriginResourceSharing) isValidAccessControlRequestHeader(header string) bool {
for _, each := range c.AllowedHeaders {
if strings.ToLower(each) == strings.ToLower(header) {
return true
}
}
return false
}

162
vendor/github.com/emicklei/go-restful/curly.go generated vendored Normal file
View file

@ -0,0 +1,162 @@
package restful
// Copyright 2013 Ernest Micklei. All rights reserved.
// Use of this source code is governed by a license
// that can be found in the LICENSE file.
import (
"net/http"
"regexp"
"sort"
"strings"
)
// CurlyRouter expects Routes with paths that contain zero or more parameters in curly brackets.
type CurlyRouter struct{}
// SelectRoute is part of the Router interface and returns the best match
// for the WebService and its Route for the given Request.
func (c CurlyRouter) SelectRoute(
webServices []*WebService,
httpRequest *http.Request) (selectedService *WebService, selected *Route, err error) {
requestTokens := tokenizePath(httpRequest.URL.Path)
detectedService := c.detectWebService(requestTokens, webServices)
if detectedService == nil {
if trace {
traceLogger.Printf("no WebService was found to match URL path:%s\n", httpRequest.URL.Path)
}
return nil, nil, NewError(http.StatusNotFound, "404: Page Not Found")
}
candidateRoutes := c.selectRoutes(detectedService, requestTokens)
if len(candidateRoutes) == 0 {
if trace {
traceLogger.Printf("no Route in WebService with path %s was found to match URL path:%s\n", detectedService.rootPath, httpRequest.URL.Path)
}
return detectedService, nil, NewError(http.StatusNotFound, "404: Page Not Found")
}
selectedRoute, err := c.detectRoute(candidateRoutes, httpRequest)
if selectedRoute == nil {
return detectedService, nil, err
}
return detectedService, selectedRoute, nil
}
// selectRoutes return a collection of Route from a WebService that matches the path tokens from the request.
func (c CurlyRouter) selectRoutes(ws *WebService, requestTokens []string) []Route {
candidates := &sortableCurlyRoutes{[]*curlyRoute{}}
for _, each := range ws.routes {
matches, paramCount, staticCount := c.matchesRouteByPathTokens(each.pathParts, requestTokens)
if matches {
candidates.add(&curlyRoute{each, paramCount, staticCount}) // TODO make sure Routes() return pointers?
}
}
sort.Sort(sort.Reverse(candidates))
return candidates.routes()
}
// matchesRouteByPathTokens computes whether it matches, howmany parameters do match and what the number of static path elements are.
func (c CurlyRouter) matchesRouteByPathTokens(routeTokens, requestTokens []string) (matches bool, paramCount int, staticCount int) {
if len(routeTokens) < len(requestTokens) {
// proceed in matching only if last routeToken is wildcard
count := len(routeTokens)
if count == 0 || !strings.HasSuffix(routeTokens[count-1], "*}") {
return false, 0, 0
}
// proceed
}
for i, routeToken := range routeTokens {
if i == len(requestTokens) {
// reached end of request path
return false, 0, 0
}
requestToken := requestTokens[i]
if strings.HasPrefix(routeToken, "{") {
paramCount++
if colon := strings.Index(routeToken, ":"); colon != -1 {
// match by regex
matchesToken, matchesRemainder := c.regularMatchesPathToken(routeToken, colon, requestToken)
if !matchesToken {
return false, 0, 0
}
if matchesRemainder {
break
}
}
} else { // no { prefix
if requestToken != routeToken {
return false, 0, 0
}
staticCount++
}
}
return true, paramCount, staticCount
}
// regularMatchesPathToken tests whether the regular expression part of routeToken matches the requestToken or all remaining tokens
// format routeToken is {someVar:someExpression}, e.g. {zipcode:[\d][\d][\d][\d][A-Z][A-Z]}
func (c CurlyRouter) regularMatchesPathToken(routeToken string, colon int, requestToken string) (matchesToken bool, matchesRemainder bool) {
regPart := routeToken[colon+1 : len(routeToken)-1]
if regPart == "*" {
if trace {
traceLogger.Printf("wildcard parameter detected in route token %s that matches %s\n", routeToken, requestToken)
}
return true, true
}
matched, err := regexp.MatchString(regPart, requestToken)
return (matched && err == nil), false
}
// detectRoute selectes from a list of Route the first match by inspecting both the Accept and Content-Type
// headers of the Request. See also RouterJSR311 in jsr311.go
func (c CurlyRouter) detectRoute(candidateRoutes []Route, httpRequest *http.Request) (*Route, error) {
// tracing is done inside detectRoute
return RouterJSR311{}.detectRoute(candidateRoutes, httpRequest)
}
// detectWebService returns the best matching webService given the list of path tokens.
// see also computeWebserviceScore
func (c CurlyRouter) detectWebService(requestTokens []string, webServices []*WebService) *WebService {
var best *WebService
score := -1
for _, each := range webServices {
matches, eachScore := c.computeWebserviceScore(requestTokens, each.pathExpr.tokens)
if matches && (eachScore > score) {
best = each
score = eachScore
}
}
return best
}
// computeWebserviceScore returns whether tokens match and
// the weighted score of the longest matching consecutive tokens from the beginning.
func (c CurlyRouter) computeWebserviceScore(requestTokens []string, tokens []string) (bool, int) {
if len(tokens) > len(requestTokens) {
return false, 0
}
score := 0
for i := 0; i < len(tokens); i++ {
each := requestTokens[i]
other := tokens[i]
if len(each) == 0 && len(other) == 0 {
score++
continue
}
if len(other) > 0 && strings.HasPrefix(other, "{") {
// no empty match
if len(each) == 0 {
return false, score
}
score += 1
} else {
// not a parameter
if each != other {
return false, score
}
score += (len(tokens) - i) * 10 //fuzzy
}
}
return true, score
}

54
vendor/github.com/emicklei/go-restful/curly_route.go generated vendored Normal file
View file

@ -0,0 +1,54 @@
package restful
// Copyright 2013 Ernest Micklei. All rights reserved.
// Use of this source code is governed by a license
// that can be found in the LICENSE file.
// curlyRoute exits for sorting Routes by the CurlyRouter based on number of parameters and number of static path elements.
type curlyRoute struct {
route Route
paramCount int
staticCount int
}
type sortableCurlyRoutes struct {
candidates []*curlyRoute
}
func (s *sortableCurlyRoutes) add(route *curlyRoute) {
s.candidates = append(s.candidates, route)
}
func (s *sortableCurlyRoutes) routes() (routes []Route) {
for _, each := range s.candidates {
routes = append(routes, each.route) // TODO change return type
}
return routes
}
func (s *sortableCurlyRoutes) Len() int {
return len(s.candidates)
}
func (s *sortableCurlyRoutes) Swap(i, j int) {
s.candidates[i], s.candidates[j] = s.candidates[j], s.candidates[i]
}
func (s *sortableCurlyRoutes) Less(i, j int) bool {
ci := s.candidates[i]
cj := s.candidates[j]
// primary key
if ci.staticCount < cj.staticCount {
return true
}
if ci.staticCount > cj.staticCount {
return false
}
// secundary key
if ci.paramCount < cj.paramCount {
return true
}
if ci.paramCount > cj.paramCount {
return false
}
return ci.route.Path < cj.route.Path
}

191
vendor/github.com/emicklei/go-restful/doc.go generated vendored Normal file
View file

@ -0,0 +1,191 @@
/*
Package restful, a lean package for creating REST-style WebServices without magic.
WebServices and Routes
A WebService has a collection of Route objects that dispatch incoming Http Requests to a function calls.
Typically, a WebService has a root path (e.g. /users) and defines common MIME types for its routes.
WebServices must be added to a container (see below) in order to handler Http requests from a server.
A Route is defined by a HTTP method, an URL path and (optionally) the MIME types it consumes (Content-Type) and produces (Accept).
This package has the logic to find the best matching Route and if found, call its Function.
ws := new(restful.WebService)
ws.
Path("/users").
Consumes(restful.MIME_JSON, restful.MIME_XML).
Produces(restful.MIME_JSON, restful.MIME_XML)
ws.Route(ws.GET("/{user-id}").To(u.findUser)) // u is a UserResource
...
// GET http://localhost:8080/users/1
func (u UserResource) findUser(request *restful.Request, response *restful.Response) {
id := request.PathParameter("user-id")
...
}
The (*Request, *Response) arguments provide functions for reading information from the request and writing information back to the response.
See the example https://github.com/emicklei/go-restful/blob/master/examples/restful-user-resource.go with a full implementation.
Regular expression matching Routes
A Route parameter can be specified using the format "uri/{var[:regexp]}" or the special version "uri/{var:*}" for matching the tail of the path.
For example, /persons/{name:[A-Z][A-Z]} can be used to restrict values for the parameter "name" to only contain capital alphabetic characters.
Regular expressions must use the standard Go syntax as described in the regexp package. (https://code.google.com/p/re2/wiki/Syntax)
This feature requires the use of a CurlyRouter.
Containers
A Container holds a collection of WebServices, Filters and a http.ServeMux for multiplexing http requests.
Using the statements "restful.Add(...) and restful.Filter(...)" will register WebServices and Filters to the Default Container.
The Default container of go-restful uses the http.DefaultServeMux.
You can create your own Container and create a new http.Server for that particular container.
container := restful.NewContainer()
server := &http.Server{Addr: ":8081", Handler: container}
Filters
A filter dynamically intercepts requests and responses to transform or use the information contained in the requests or responses.
You can use filters to perform generic logging, measurement, authentication, redirect, set response headers etc.
In the restful package there are three hooks into the request,response flow where filters can be added.
Each filter must define a FilterFunction:
func (req *restful.Request, resp *restful.Response, chain *restful.FilterChain)
Use the following statement to pass the request,response pair to the next filter or RouteFunction
chain.ProcessFilter(req, resp)
Container Filters
These are processed before any registered WebService.
// install a (global) filter for the default container (processed before any webservice)
restful.Filter(globalLogging)
WebService Filters
These are processed before any Route of a WebService.
// install a webservice filter (processed before any route)
ws.Filter(webserviceLogging).Filter(measureTime)
Route Filters
These are processed before calling the function associated with the Route.
// install 2 chained route filters (processed before calling findUser)
ws.Route(ws.GET("/{user-id}").Filter(routeLogging).Filter(NewCountFilter().routeCounter).To(findUser))
See the example https://github.com/emicklei/go-restful/blob/master/examples/restful-filters.go with full implementations.
Response Encoding
Two encodings are supported: gzip and deflate. To enable this for all responses:
restful.DefaultContainer.EnableContentEncoding(true)
If a Http request includes the Accept-Encoding header then the response content will be compressed using the specified encoding.
Alternatively, you can create a Filter that performs the encoding and install it per WebService or Route.
See the example https://github.com/emicklei/go-restful/blob/master/examples/restful-encoding-filter.go
OPTIONS support
By installing a pre-defined container filter, your Webservice(s) can respond to the OPTIONS Http request.
Filter(OPTIONSFilter())
CORS
By installing the filter of a CrossOriginResourceSharing (CORS), your WebService(s) can handle CORS requests.
cors := CrossOriginResourceSharing{ExposeHeaders: []string{"X-My-Header"}, CookiesAllowed: false, Container: DefaultContainer}
Filter(cors.Filter)
Error Handling
Unexpected things happen. If a request cannot be processed because of a failure, your service needs to tell via the response what happened and why.
For this reason HTTP status codes exist and it is important to use the correct code in every exceptional situation.
400: Bad Request
If path or query parameters are not valid (content or type) then use http.StatusBadRequest.
404: Not Found
Despite a valid URI, the resource requested may not be available
500: Internal Server Error
If the application logic could not process the request (or write the response) then use http.StatusInternalServerError.
405: Method Not Allowed
The request has a valid URL but the method (GET,PUT,POST,...) is not allowed.
406: Not Acceptable
The request does not have or has an unknown Accept Header set for this operation.
415: Unsupported Media Type
The request does not have or has an unknown Content-Type Header set for this operation.
ServiceError
In addition to setting the correct (error) Http status code, you can choose to write a ServiceError message on the response.
Performance options
This package has several options that affect the performance of your service. It is important to understand them and how you can change it.
restful.DefaultContainer.Router(CurlyRouter{})
The default router is the RouterJSR311 which is an implementation of its spec (http://jsr311.java.net/nonav/releases/1.1/spec/spec.html).
However, it uses regular expressions for all its routes which, depending on your usecase, may consume a significant amount of time.
The CurlyRouter implementation is more lightweight that also allows you to use wildcards and expressions, but only if needed.
restful.DefaultContainer.DoNotRecover(true)
DoNotRecover controls whether panics will be caught to return HTTP 500.
If set to true, Route functions are responsible for handling any error situation.
Default value is false; it will recover from panics. This has performance implications.
restful.SetCacheReadEntity(false)
SetCacheReadEntity controls whether the response data ([]byte) is cached such that ReadEntity is repeatable.
If you expect to read large amounts of payload data, and you do not use this feature, you should set it to false.
Trouble shooting
This package has the means to produce detail logging of the complete Http request matching process and filter invocation.
Enabling this feature requires you to set an implementation of restful.StdLogger (e.g. log.Logger) instance such as:
restful.TraceLogger(log.New(os.Stdout, "[restful] ", log.LstdFlags|log.Lshortfile))
Logging
The restful.SetLogger() method allows you to override the logger used by the package. By default restful
uses the standard library `log` package and logs to stdout. Different logging packages are supported as
long as they conform to `StdLogger` interface defined in the `log` sub-package, writing an adapter for your
preferred package is simple.
Resources
[project]: https://github.com/emicklei/go-restful
[examples]: https://github.com/emicklei/go-restful/blob/master/examples
[design]: http://ernestmicklei.com/2012/11/11/go-restful-api-design/
[showcases]: https://github.com/emicklei/mora, https://github.com/emicklei/landskape
(c) 2012-2015, http://ernestmicklei.com. MIT License
*/
package restful

26
vendor/github.com/emicklei/go-restful/filter.go generated vendored Normal file
View file

@ -0,0 +1,26 @@
package restful
// Copyright 2013 Ernest Micklei. All rights reserved.
// Use of this source code is governed by a license
// that can be found in the LICENSE file.
// FilterChain is a request scoped object to process one or more filters before calling the target RouteFunction.
type FilterChain struct {
Filters []FilterFunction // ordered list of FilterFunction
Index int // index into filters that is currently in progress
Target RouteFunction // function to call after passing all filters
}
// ProcessFilter passes the request,response pair through the next of Filters.
// Each filter can decide to proceed to the next Filter or handle the Response itself.
func (f *FilterChain) ProcessFilter(request *Request, response *Response) {
if f.Index < len(f.Filters) {
f.Index++
f.Filters[f.Index-1](request, response, f)
} else {
f.Target(request, response)
}
}
// FilterFunction definitions must call ProcessFilter on the FilterChain to pass on the control and eventually call the RouteFunction
type FilterFunction func(*Request, *Response, *FilterChain)

247
vendor/github.com/emicklei/go-restful/jsr311.go generated vendored Normal file
View file

@ -0,0 +1,247 @@
package restful
// Copyright 2013 Ernest Micklei. All rights reserved.
// Use of this source code is governed by a license
// that can be found in the LICENSE file.
import (
"errors"
"fmt"
"net/http"
"sort"
)
// RouterJSR311 implements the flow for matching Requests to Routes (and consequently Resource Functions)
// as specified by the JSR311 http://jsr311.java.net/nonav/releases/1.1/spec/spec.html.
// RouterJSR311 implements the Router interface.
// Concept of locators is not implemented.
type RouterJSR311 struct{}
// SelectRoute is part of the Router interface and returns the best match
// for the WebService and its Route for the given Request.
func (r RouterJSR311) SelectRoute(
webServices []*WebService,
httpRequest *http.Request) (selectedService *WebService, selectedRoute *Route, err error) {
// Identify the root resource class (WebService)
dispatcher, finalMatch, err := r.detectDispatcher(httpRequest.URL.Path, webServices)
if err != nil {
return nil, nil, NewError(http.StatusNotFound, "")
}
// Obtain the set of candidate methods (Routes)
routes := r.selectRoutes(dispatcher, finalMatch)
if len(routes) == 0 {
return dispatcher, nil, NewError(http.StatusNotFound, "404: Page Not Found")
}
// Identify the method (Route) that will handle the request
route, ok := r.detectRoute(routes, httpRequest)
return dispatcher, route, ok
}
// http://jsr311.java.net/nonav/releases/1.1/spec/spec3.html#x3-360003.7.2
func (r RouterJSR311) detectRoute(routes []Route, httpRequest *http.Request) (*Route, error) {
// http method
methodOk := []Route{}
for _, each := range routes {
if httpRequest.Method == each.Method {
methodOk = append(methodOk, each)
}
}
if len(methodOk) == 0 {
if trace {
traceLogger.Printf("no Route found (in %d routes) that matches HTTP method %s\n", len(routes), httpRequest.Method)
}
return nil, NewError(http.StatusMethodNotAllowed, "405: Method Not Allowed")
}
inputMediaOk := methodOk
// content-type
contentType := httpRequest.Header.Get(HEADER_ContentType)
inputMediaOk = []Route{}
for _, each := range methodOk {
if each.matchesContentType(contentType) {
inputMediaOk = append(inputMediaOk, each)
}
}
if len(inputMediaOk) == 0 {
if trace {
traceLogger.Printf("no Route found (from %d) that matches HTTP Content-Type: %s\n", len(methodOk), contentType)
}
return nil, NewError(http.StatusUnsupportedMediaType, "415: Unsupported Media Type")
}
// accept
outputMediaOk := []Route{}
accept := httpRequest.Header.Get(HEADER_Accept)
if accept == "" {
accept = "*/*"
}
for _, each := range inputMediaOk {
if each.matchesAccept(accept) {
outputMediaOk = append(outputMediaOk, each)
}
}
if len(outputMediaOk) == 0 {
if trace {
traceLogger.Printf("no Route found (from %d) that matches HTTP Accept: %s\n", len(inputMediaOk), accept)
}
return nil, NewError(http.StatusNotAcceptable, "406: Not Acceptable")
}
return r.bestMatchByMedia(outputMediaOk, contentType, accept), nil
}
// http://jsr311.java.net/nonav/releases/1.1/spec/spec3.html#x3-360003.7.2
// n/m > n/* > */*
func (r RouterJSR311) bestMatchByMedia(routes []Route, contentType string, accept string) *Route {
// TODO
return &routes[0]
}
// http://jsr311.java.net/nonav/releases/1.1/spec/spec3.html#x3-360003.7.2 (step 2)
func (r RouterJSR311) selectRoutes(dispatcher *WebService, pathRemainder string) []Route {
filtered := &sortableRouteCandidates{}
for _, each := range dispatcher.Routes() {
pathExpr := each.pathExpr
matches := pathExpr.Matcher.FindStringSubmatch(pathRemainder)
if matches != nil {
lastMatch := matches[len(matches)-1]
if len(lastMatch) == 0 || lastMatch == "/" { // do not include if value is neither empty nor /.
filtered.candidates = append(filtered.candidates,
routeCandidate{each, len(matches) - 1, pathExpr.LiteralCount, pathExpr.VarCount})
}
}
}
if len(filtered.candidates) == 0 {
if trace {
traceLogger.Printf("WebService on path %s has no routes that match URL path remainder:%s\n", dispatcher.rootPath, pathRemainder)
}
return []Route{}
}
sort.Sort(sort.Reverse(filtered))
// select other routes from candidates whoes expression matches rmatch
matchingRoutes := []Route{filtered.candidates[0].route}
for c := 1; c < len(filtered.candidates); c++ {
each := filtered.candidates[c]
if each.route.pathExpr.Matcher.MatchString(pathRemainder) {
matchingRoutes = append(matchingRoutes, each.route)
}
}
return matchingRoutes
}
// http://jsr311.java.net/nonav/releases/1.1/spec/spec3.html#x3-360003.7.2 (step 1)
func (r RouterJSR311) detectDispatcher(requestPath string, dispatchers []*WebService) (*WebService, string, error) {
filtered := &sortableDispatcherCandidates{}
for _, each := range dispatchers {
matches := each.pathExpr.Matcher.FindStringSubmatch(requestPath)
if matches != nil {
filtered.candidates = append(filtered.candidates,
dispatcherCandidate{each, matches[len(matches)-1], len(matches), each.pathExpr.LiteralCount, each.pathExpr.VarCount})
}
}
if len(filtered.candidates) == 0 {
if trace {
traceLogger.Printf("no WebService was found to match URL path:%s\n", requestPath)
}
return nil, "", errors.New("not found")
}
sort.Sort(sort.Reverse(filtered))
return filtered.candidates[0].dispatcher, filtered.candidates[0].finalMatch, nil
}
// Types and functions to support the sorting of Routes
type routeCandidate struct {
route Route
matchesCount int // the number of capturing groups
literalCount int // the number of literal characters (means those not resulting from template variable substitution)
nonDefaultCount int // the number of capturing groups with non-default regular expressions (i.e. not ([^ /]+?))
}
func (r routeCandidate) expressionToMatch() string {
return r.route.pathExpr.Source
}
func (r routeCandidate) String() string {
return fmt.Sprintf("(m=%d,l=%d,n=%d)", r.matchesCount, r.literalCount, r.nonDefaultCount)
}
type sortableRouteCandidates struct {
candidates []routeCandidate
}
func (rcs *sortableRouteCandidates) Len() int {
return len(rcs.candidates)
}
func (rcs *sortableRouteCandidates) Swap(i, j int) {
rcs.candidates[i], rcs.candidates[j] = rcs.candidates[j], rcs.candidates[i]
}
func (rcs *sortableRouteCandidates) Less(i, j int) bool {
ci := rcs.candidates[i]
cj := rcs.candidates[j]
// primary key
if ci.literalCount < cj.literalCount {
return true
}
if ci.literalCount > cj.literalCount {
return false
}
// secundary key
if ci.matchesCount < cj.matchesCount {
return true
}
if ci.matchesCount > cj.matchesCount {
return false
}
// tertiary key
if ci.nonDefaultCount < cj.nonDefaultCount {
return true
}
if ci.nonDefaultCount > cj.nonDefaultCount {
return false
}
// quaternary key ("source" is interpreted as Path)
return ci.route.Path < cj.route.Path
}
// Types and functions to support the sorting of Dispatchers
type dispatcherCandidate struct {
dispatcher *WebService
finalMatch string
matchesCount int // the number of capturing groups
literalCount int // the number of literal characters (means those not resulting from template variable substitution)
nonDefaultCount int // the number of capturing groups with non-default regular expressions (i.e. not ([^ /]+?))
}
type sortableDispatcherCandidates struct {
candidates []dispatcherCandidate
}
func (dc *sortableDispatcherCandidates) Len() int {
return len(dc.candidates)
}
func (dc *sortableDispatcherCandidates) Swap(i, j int) {
dc.candidates[i], dc.candidates[j] = dc.candidates[j], dc.candidates[i]
}
func (dc *sortableDispatcherCandidates) Less(i, j int) bool {
ci := dc.candidates[i]
cj := dc.candidates[j]
// primary key
if ci.matchesCount < cj.matchesCount {
return true
}
if ci.matchesCount > cj.matchesCount {
return false
}
// secundary key
if ci.literalCount < cj.literalCount {
return true
}
if ci.literalCount > cj.literalCount {
return false
}
// tertiary key
return ci.nonDefaultCount < cj.nonDefaultCount
}

31
vendor/github.com/emicklei/go-restful/log/log.go generated vendored Normal file
View file

@ -0,0 +1,31 @@
package log
import (
stdlog "log"
"os"
)
// Logger corresponds to a minimal subset of the interface satisfied by stdlib log.Logger
type StdLogger interface {
Print(v ...interface{})
Printf(format string, v ...interface{})
}
var Logger StdLogger
func init() {
// default Logger
SetLogger(stdlog.New(os.Stdout, "[restful] ", stdlog.LstdFlags|stdlog.Lshortfile))
}
func SetLogger(customLogger StdLogger) {
Logger = customLogger
}
func Print(v ...interface{}) {
Logger.Print(v...)
}
func Printf(format string, v ...interface{}) {
Logger.Printf(format, v...)
}

32
vendor/github.com/emicklei/go-restful/logger.go generated vendored Normal file
View file

@ -0,0 +1,32 @@
package restful
// Copyright 2014 Ernest Micklei. All rights reserved.
// Use of this source code is governed by a license
// that can be found in the LICENSE file.
import (
"github.com/emicklei/go-restful/log"
)
var trace bool = false
var traceLogger log.StdLogger
func init() {
traceLogger = log.Logger // use the package logger by default
}
// TraceLogger enables detailed logging of Http request matching and filter invocation. Default no logger is set.
// You may call EnableTracing() directly to enable trace logging to the package-wide logger.
func TraceLogger(logger log.StdLogger) {
traceLogger = logger
EnableTracing(logger != nil)
}
// expose the setter for the global logger on the top-level package
func SetLogger(customLogger log.StdLogger) {
log.SetLogger(customLogger)
}
// EnableTracing can be used to Trace logging on and off.
func EnableTracing(enabled bool) {
trace = enabled
}

View file

@ -0,0 +1,24 @@
package restful
import "strings"
// Copyright 2013 Ernest Micklei. All rights reserved.
// Use of this source code is governed by a license
// that can be found in the LICENSE file.
// OPTIONSFilter is a filter function that inspects the Http Request for the OPTIONS method
// and provides the response with a set of allowed methods for the request URL Path.
// As for any filter, you can also install it for a particular WebService within a Container
func (c *Container) OPTIONSFilter(req *Request, resp *Response, chain *FilterChain) {
if "OPTIONS" != req.Request.Method {
chain.ProcessFilter(req, resp)
return
}
resp.AddHeader(HEADER_Allow, strings.Join(c.computeAllowedMethods(req), ","))
}
// OPTIONSFilter is a filter function that inspects the Http Request for the OPTIONS method
// and provides the response with a set of allowed methods for the request URL Path.
func OPTIONSFilter() FilterFunction {
return DefaultContainer.OPTIONSFilter
}

108
vendor/github.com/emicklei/go-restful/parameter.go generated vendored Normal file
View file

@ -0,0 +1,108 @@
package restful
// Copyright 2013 Ernest Micklei. All rights reserved.
// Use of this source code is governed by a license
// that can be found in the LICENSE file.
const (
// PathParameterKind = indicator of Request parameter type "path"
PathParameterKind = iota
// QueryParameterKind = indicator of Request parameter type "query"
QueryParameterKind
// BodyParameterKind = indicator of Request parameter type "body"
BodyParameterKind
// HeaderParameterKind = indicator of Request parameter type "header"
HeaderParameterKind
// FormParameterKind = indicator of Request parameter type "form"
FormParameterKind
)
// Parameter is for documententing the parameter used in a Http Request
// ParameterData kinds are Path,Query and Body
type Parameter struct {
data *ParameterData
}
// ParameterData represents the state of a Parameter.
// It is made public to make it accessible to e.g. the Swagger package.
type ParameterData struct {
Name, Description, DataType string
Kind int
Required bool
AllowableValues map[string]string
AllowMultiple bool
DefaultValue string
}
// Data returns the state of the Parameter
func (p *Parameter) Data() ParameterData {
return *p.data
}
// Kind returns the parameter type indicator (see const for valid values)
func (p *Parameter) Kind() int {
return p.data.Kind
}
func (p *Parameter) bePath() *Parameter {
p.data.Kind = PathParameterKind
return p
}
func (p *Parameter) beQuery() *Parameter {
p.data.Kind = QueryParameterKind
return p
}
func (p *Parameter) beBody() *Parameter {
p.data.Kind = BodyParameterKind
return p
}
func (p *Parameter) beHeader() *Parameter {
p.data.Kind = HeaderParameterKind
return p
}
func (p *Parameter) beForm() *Parameter {
p.data.Kind = FormParameterKind
return p
}
// Required sets the required field and returns the receiver
func (p *Parameter) Required(required bool) *Parameter {
p.data.Required = required
return p
}
// AllowMultiple sets the allowMultiple field and returns the receiver
func (p *Parameter) AllowMultiple(multiple bool) *Parameter {
p.data.AllowMultiple = multiple
return p
}
// AllowableValues sets the allowableValues field and returns the receiver
func (p *Parameter) AllowableValues(values map[string]string) *Parameter {
p.data.AllowableValues = values
return p
}
// DataType sets the dataType field and returns the receiver
func (p *Parameter) DataType(typeName string) *Parameter {
p.data.DataType = typeName
return p
}
// DefaultValue sets the default value field and returns the receiver
func (p *Parameter) DefaultValue(stringRepresentation string) *Parameter {
p.data.DefaultValue = stringRepresentation
return p
}
// Description sets the description value field and returns the receiver
func (p *Parameter) Description(doc string) *Parameter {
p.data.Description = doc
return p
}

View file

@ -0,0 +1,69 @@
package restful
// Copyright 2013 Ernest Micklei. All rights reserved.
// Use of this source code is governed by a license
// that can be found in the LICENSE file.
import (
"bytes"
"fmt"
"regexp"
"strings"
)
// PathExpression holds a compiled path expression (RegExp) needed to match against
// Http request paths and to extract path parameter values.
type pathExpression struct {
LiteralCount int // the number of literal characters (means those not resulting from template variable substitution)
VarCount int // the number of named parameters (enclosed by {}) in the path
Matcher *regexp.Regexp
Source string // Path as defined by the RouteBuilder
tokens []string
}
// NewPathExpression creates a PathExpression from the input URL path.
// Returns an error if the path is invalid.
func newPathExpression(path string) (*pathExpression, error) {
expression, literalCount, varCount, tokens := templateToRegularExpression(path)
compiled, err := regexp.Compile(expression)
if err != nil {
return nil, err
}
return &pathExpression{literalCount, varCount, compiled, expression, tokens}, nil
}
// http://jsr311.java.net/nonav/releases/1.1/spec/spec3.html#x3-370003.7.3
func templateToRegularExpression(template string) (expression string, literalCount int, varCount int, tokens []string) {
var buffer bytes.Buffer
buffer.WriteString("^")
//tokens = strings.Split(template, "/")
tokens = tokenizePath(template)
for _, each := range tokens {
if each == "" {
continue
}
buffer.WriteString("/")
if strings.HasPrefix(each, "{") {
// check for regular expression in variable
colon := strings.Index(each, ":")
if colon != -1 {
// extract expression
paramExpr := strings.TrimSpace(each[colon+1 : len(each)-1])
if paramExpr == "*" { // special case
buffer.WriteString("(.*)")
} else {
buffer.WriteString(fmt.Sprintf("(%s)", paramExpr)) // between colon and closing moustache
}
} else {
// plain var
buffer.WriteString("([^/]+?)")
}
varCount += 1
} else {
literalCount += len(each)
encoded := each // TODO URI encode
buffer.WriteString(regexp.QuoteMeta(encoded))
}
}
return strings.TrimRight(buffer.String(), "/") + "(/.*)?$", literalCount, varCount, tokens
}

155
vendor/github.com/emicklei/go-restful/request.go generated vendored Normal file
View file

@ -0,0 +1,155 @@
package restful
// Copyright 2013 Ernest Micklei. All rights reserved.
// Use of this source code is governed by a license
// that can be found in the LICENSE file.
import (
"bytes"
"compress/gzip"
"compress/zlib"
"encoding/json"
"encoding/xml"
"io"
"io/ioutil"
"net/http"
"strings"
)
var defaultRequestContentType string
var doCacheReadEntityBytes = true
// Request is a wrapper for a http Request that provides convenience methods
type Request struct {
Request *http.Request
bodyContent *[]byte // to cache the request body for multiple reads of ReadEntity
pathParameters map[string]string
attributes map[string]interface{} // for storing request-scoped values
selectedRoutePath string // root path + route path that matched the request, e.g. /meetings/{id}/attendees
}
func NewRequest(httpRequest *http.Request) *Request {
return &Request{
Request: httpRequest,
pathParameters: map[string]string{},
attributes: map[string]interface{}{},
} // empty parameters, attributes
}
// If ContentType is missing or */* is given then fall back to this type, otherwise
// a "Unable to unmarshal content of type:" response is returned.
// Valid values are restful.MIME_JSON and restful.MIME_XML
// Example:
// restful.DefaultRequestContentType(restful.MIME_JSON)
func DefaultRequestContentType(mime string) {
defaultRequestContentType = mime
}
// SetCacheReadEntity controls whether the response data ([]byte) is cached such that ReadEntity is repeatable.
// Default is true (due to backwardcompatibility). For better performance, you should set it to false if you don't need it.
func SetCacheReadEntity(doCache bool) {
doCacheReadEntityBytes = doCache
}
// PathParameter accesses the Path parameter value by its name
func (r *Request) PathParameter(name string) string {
return r.pathParameters[name]
}
// PathParameters accesses the Path parameter values
func (r *Request) PathParameters() map[string]string {
return r.pathParameters
}
// QueryParameter returns the (first) Query parameter value by its name
func (r *Request) QueryParameter(name string) string {
return r.Request.FormValue(name)
}
// BodyParameter parses the body of the request (once for typically a POST or a PUT) and returns the value of the given name or an error.
func (r *Request) BodyParameter(name string) (string, error) {
err := r.Request.ParseForm()
if err != nil {
return "", err
}
return r.Request.PostFormValue(name), nil
}
// HeaderParameter returns the HTTP Header value of a Header name or empty if missing
func (r *Request) HeaderParameter(name string) string {
return r.Request.Header.Get(name)
}
// ReadEntity checks the Accept header and reads the content into the entityPointer
// May be called multiple times in the request-response flow
func (r *Request) ReadEntity(entityPointer interface{}) (err error) {
defer r.Request.Body.Close()
contentType := r.Request.Header.Get(HEADER_ContentType)
contentEncoding := r.Request.Header.Get(HEADER_ContentEncoding)
if doCacheReadEntityBytes {
return r.cachingReadEntity(contentType, contentEncoding, entityPointer)
}
// unmarshall directly from request Body
return r.decodeEntity(r.Request.Body, contentType, contentEncoding, entityPointer)
}
func (r *Request) cachingReadEntity(contentType string, contentEncoding string, entityPointer interface{}) (err error) {
var buffer []byte
if r.bodyContent != nil {
buffer = *r.bodyContent
} else {
buffer, err = ioutil.ReadAll(r.Request.Body)
if err != nil {
return err
}
r.bodyContent = &buffer
}
return r.decodeEntity(bytes.NewReader(buffer), contentType, contentEncoding, entityPointer)
}
func (r *Request) decodeEntity(reader io.Reader, contentType string, contentEncoding string, entityPointer interface{}) (err error) {
entityReader := reader
// check if the request body needs decompression
if ENCODING_GZIP == contentEncoding {
gzipReader := GzipReaderPool.Get().(*gzip.Reader)
gzipReader.Reset(reader)
entityReader = gzipReader
} else if ENCODING_DEFLATE == contentEncoding {
zlibReader, err := zlib.NewReader(reader)
if err != nil {
return err
}
entityReader = zlibReader
}
// decode JSON
if strings.Contains(contentType, MIME_JSON) || MIME_JSON == defaultRequestContentType {
decoder := json.NewDecoder(entityReader)
decoder.UseNumber()
return decoder.Decode(entityPointer)
}
// decode XML
if strings.Contains(contentType, MIME_XML) || MIME_XML == defaultRequestContentType {
return xml.NewDecoder(entityReader).Decode(entityPointer)
}
return NewError(http.StatusBadRequest, "Unable to unmarshal content of type:"+contentType)
}
// SetAttribute adds or replaces the attribute with the given value.
func (r *Request) SetAttribute(name string, value interface{}) {
r.attributes[name] = value
}
// Attribute returns the value associated to the given name. Returns nil if absent.
func (r Request) Attribute(name string) interface{} {
return r.attributes[name]
}
// SelectedRoutePath root path + route path that matched the request, e.g. /meetings/{id}/attendees
func (r Request) SelectedRoutePath() string {
return r.selectedRoutePath
}

265
vendor/github.com/emicklei/go-restful/response.go generated vendored Normal file
View file

@ -0,0 +1,265 @@
package restful
// Copyright 2013 Ernest Micklei. All rights reserved.
// Use of this source code is governed by a license
// that can be found in the LICENSE file.
import (
"encoding/json"
"encoding/xml"
"net/http"
"strings"
)
// DEPRECATED, use DefaultResponseContentType(mime)
var DefaultResponseMimeType string
//PrettyPrintResponses controls the indentation feature of XML and JSON
//serialization in the response methods WriteEntity, WriteAsJson, and
//WriteAsXml.
var PrettyPrintResponses = true
// Response is a wrapper on the actual http ResponseWriter
// It provides several convenience methods to prepare and write response content.
type Response struct {
http.ResponseWriter
requestAccept string // mime-type what the Http Request says it wants to receive
routeProduces []string // mime-types what the Route says it can produce
statusCode int // HTTP status code that has been written explicity (if zero then net/http has written 200)
contentLength int // number of bytes written for the response body
prettyPrint bool // controls the indentation feature of XML and JSON serialization. It is initialized using var PrettyPrintResponses.
err error // err property is kept when WriteError is called
}
// Creates a new response based on a http ResponseWriter.
func NewResponse(httpWriter http.ResponseWriter) *Response {
return &Response{httpWriter, "", []string{}, http.StatusOK, 0, PrettyPrintResponses, nil} // empty content-types
}
// If Accept header matching fails, fall back to this type, otherwise
// a "406: Not Acceptable" response is returned.
// Valid values are restful.MIME_JSON and restful.MIME_XML
// Example:
// restful.DefaultResponseContentType(restful.MIME_JSON)
func DefaultResponseContentType(mime string) {
DefaultResponseMimeType = mime
}
// InternalServerError writes the StatusInternalServerError header.
// DEPRECATED, use WriteErrorString(http.StatusInternalServerError,reason)
func (r Response) InternalServerError() Response {
r.WriteHeader(http.StatusInternalServerError)
return r
}
// PrettyPrint changes whether this response must produce pretty (line-by-line, indented) JSON or XML output.
func (r *Response) PrettyPrint(bePretty bool) {
r.prettyPrint = bePretty
}
// AddHeader is a shortcut for .Header().Add(header,value)
func (r Response) AddHeader(header string, value string) Response {
r.Header().Add(header, value)
return r
}
// SetRequestAccepts tells the response what Mime-type(s) the HTTP request said it wants to accept. Exposed for testing.
func (r *Response) SetRequestAccepts(mime string) {
r.requestAccept = mime
}
// WriteEntity marshals the value using the representation denoted by the Accept Header (XML or JSON)
// If no Accept header is specified (or */*) then return the Content-Type as specified by the first in the Route.Produces.
// If an Accept header is specified then return the Content-Type as specified by the first in the Route.Produces that is matched with the Accept header.
// If the value is nil then nothing is written. You may want to call WriteHeader(http.StatusNotFound) instead.
// Current implementation ignores any q-parameters in the Accept Header.
func (r *Response) WriteEntity(value interface{}) error {
if value == nil { // do not write a nil representation
return nil
}
for _, qualifiedMime := range strings.Split(r.requestAccept, ",") {
mime := strings.Trim(strings.Split(qualifiedMime, ";")[0], " ")
if 0 == len(mime) || mime == "*/*" {
for _, each := range r.routeProduces {
if MIME_JSON == each {
return r.WriteAsJson(value)
}
if MIME_XML == each {
return r.WriteAsXml(value)
}
}
} else { // mime is not blank; see if we have a match in Produces
for _, each := range r.routeProduces {
if mime == each {
if MIME_JSON == each {
return r.WriteAsJson(value)
}
if MIME_XML == each {
return r.WriteAsXml(value)
}
}
}
}
}
if DefaultResponseMimeType == MIME_JSON {
return r.WriteAsJson(value)
} else if DefaultResponseMimeType == MIME_XML {
return r.WriteAsXml(value)
} else {
if trace {
traceLogger.Printf("mismatch in mime-types and no defaults; (http)Accept=%v,(route)Produces=%v\n", r.requestAccept, r.routeProduces)
}
r.WriteHeader(http.StatusNotAcceptable) // for recording only
r.ResponseWriter.WriteHeader(http.StatusNotAcceptable)
if _, err := r.Write([]byte("406: Not Acceptable")); err != nil {
return err
}
}
return nil
}
// WriteAsXml is a convenience method for writing a value in xml (requires Xml tags on the value)
func (r *Response) WriteAsXml(value interface{}) error {
var output []byte
var err error
if value == nil { // do not write a nil representation
return nil
}
if r.prettyPrint {
output, err = xml.MarshalIndent(value, " ", " ")
} else {
output, err = xml.Marshal(value)
}
if err != nil {
return r.WriteError(http.StatusInternalServerError, err)
}
r.Header().Set(HEADER_ContentType, MIME_XML)
if r.statusCode > 0 { // a WriteHeader was intercepted
r.ResponseWriter.WriteHeader(r.statusCode)
}
_, err = r.Write([]byte(xml.Header))
if err != nil {
return err
}
if _, err = r.Write(output); err != nil {
return err
}
return nil
}
// WriteAsJson is a convenience method for writing a value in json
func (r *Response) WriteAsJson(value interface{}) error {
return r.WriteJson(value, MIME_JSON) // no charset
}
// WriteJson is a convenience method for writing a value in Json with a given Content-Type
func (r *Response) WriteJson(value interface{}, contentType string) error {
var output []byte
var err error
if value == nil { // do not write a nil representation
return nil
}
if r.prettyPrint {
output, err = json.MarshalIndent(value, " ", " ")
} else {
output, err = json.Marshal(value)
}
if err != nil {
return r.WriteErrorString(http.StatusInternalServerError, err.Error())
}
r.Header().Set(HEADER_ContentType, contentType)
if r.statusCode > 0 { // a WriteHeader was intercepted
r.ResponseWriter.WriteHeader(r.statusCode)
}
if _, err = r.Write(output); err != nil {
return err
}
return nil
}
// WriteError write the http status and the error string on the response.
func (r *Response) WriteError(httpStatus int, err error) error {
r.err = err
return r.WriteErrorString(httpStatus, err.Error())
}
// WriteServiceError is a convenience method for a responding with a ServiceError and a status
func (r *Response) WriteServiceError(httpStatus int, err ServiceError) error {
r.WriteHeader(httpStatus) // for recording only
return r.WriteEntity(err)
}
// WriteErrorString is a convenience method for an error status with the actual error
func (r *Response) WriteErrorString(status int, errorReason string) error {
r.statusCode = status // for recording only
r.ResponseWriter.WriteHeader(status)
if _, err := r.Write([]byte(errorReason)); err != nil {
return err
}
return nil
}
// WriteHeader is overridden to remember the Status Code that has been written.
// Note that using this method, the status value is only written when
// calling WriteEntity,
// or directly calling WriteAsXml or WriteAsJson,
// or if the status is one for which no response is allowed:
//
// 202 = http.StatusAccepted
// 204 = http.StatusNoContent
// 206 = http.StatusPartialContent
// 304 = http.StatusNotModified
// 404 = http.StatusNotFound
//
// If this behavior does not fit your need then you can write to the underlying response, such as:
// response.ResponseWriter.WriteHeader(http.StatusAccepted)
func (r *Response) WriteHeader(httpStatus int) {
r.statusCode = httpStatus
// if 202,204,206,304,404 then WriteEntity will not be called so we need to pass this code
if http.StatusNotFound == httpStatus ||
http.StatusNoContent == httpStatus ||
http.StatusNotModified == httpStatus ||
http.StatusPartialContent == httpStatus ||
http.StatusAccepted == httpStatus {
r.ResponseWriter.WriteHeader(httpStatus)
}
}
// StatusCode returns the code that has been written using WriteHeader.
// If WriteHeader, WriteEntity or WriteAsXml has not been called (yet) then return 200 OK.
func (r Response) StatusCode() int {
if 0 == r.statusCode {
// no status code has been written yet; assume OK
return http.StatusOK
}
return r.statusCode
}
// Write writes the data to the connection as part of an HTTP reply.
// Write is part of http.ResponseWriter interface.
func (r *Response) Write(bytes []byte) (int, error) {
written, err := r.ResponseWriter.Write(bytes)
r.contentLength += written
return written, err
}
// ContentLength returns the number of bytes written for the response content.
// Note that this value is only correct if all data is written through the Response using its Write* methods.
// Data written directly using the underlying http.ResponseWriter is not accounted for.
func (r Response) ContentLength() int {
return r.contentLength
}
// CloseNotify is part of http.CloseNotifier interface
func (r Response) CloseNotify() <-chan bool {
return r.ResponseWriter.(http.CloseNotifier).CloseNotify()
}
// Error returns the err created by WriteError
func (r Response) Error() error {
return r.err
}

183
vendor/github.com/emicklei/go-restful/route.go generated vendored Normal file
View file

@ -0,0 +1,183 @@
package restful
// Copyright 2013 Ernest Micklei. All rights reserved.
// Use of this source code is governed by a license
// that can be found in the LICENSE file.
import (
"bytes"
"net/http"
"strings"
)
// RouteFunction declares the signature of a function that can be bound to a Route.
type RouteFunction func(*Request, *Response)
// Route binds a HTTP Method,Path,Consumes combination to a RouteFunction.
type Route struct {
Method string
Produces []string
Consumes []string
Path string // webservice root path + described path
Function RouteFunction
Filters []FilterFunction
// cached values for dispatching
relativePath string
pathParts []string
pathExpr *pathExpression // cached compilation of relativePath as RegExp
// documentation
Doc string
Notes string
Operation string
ParameterDocs []*Parameter
ResponseErrors map[int]ResponseError
ReadSample, WriteSample interface{} // structs that model an example request or response payload
}
// Initialize for Route
func (r *Route) postBuild() {
r.pathParts = tokenizePath(r.Path)
}
// Create Request and Response from their http versions
func (r *Route) wrapRequestResponse(httpWriter http.ResponseWriter, httpRequest *http.Request) (*Request, *Response) {
params := r.extractParameters(httpRequest.URL.Path)
wrappedRequest := NewRequest(httpRequest)
wrappedRequest.pathParameters = params
wrappedRequest.selectedRoutePath = r.Path
wrappedResponse := NewResponse(httpWriter)
wrappedResponse.requestAccept = httpRequest.Header.Get(HEADER_Accept)
wrappedResponse.routeProduces = r.Produces
return wrappedRequest, wrappedResponse
}
// dispatchWithFilters call the function after passing through its own filters
func (r *Route) dispatchWithFilters(wrappedRequest *Request, wrappedResponse *Response) {
if len(r.Filters) > 0 {
chain := FilterChain{Filters: r.Filters, Target: r.Function}
chain.ProcessFilter(wrappedRequest, wrappedResponse)
} else {
// unfiltered
r.Function(wrappedRequest, wrappedResponse)
}
}
// Return whether the mimeType matches to what this Route can produce.
func (r Route) matchesAccept(mimeTypesWithQuality string) bool {
parts := strings.Split(mimeTypesWithQuality, ",")
for _, each := range parts {
var withoutQuality string
if strings.Contains(each, ";") {
withoutQuality = strings.Split(each, ";")[0]
} else {
withoutQuality = each
}
// trim before compare
withoutQuality = strings.Trim(withoutQuality, " ")
if withoutQuality == "*/*" {
return true
}
for _, producibleType := range r.Produces {
if producibleType == "*/*" || producibleType == withoutQuality {
return true
}
}
}
return false
}
// Return whether this Route can consume content with a type specified by mimeTypes (can be empty).
func (r Route) matchesContentType(mimeTypes string) bool {
if len(r.Consumes) == 0 {
// did not specify what it can consume ; any media type (“*/*”) is assumed
return true
}
if len(mimeTypes) == 0 {
// idempotent methods with (most-likely or garanteed) empty content match missing Content-Type
m := r.Method
if m == "GET" || m == "HEAD" || m == "OPTIONS" || m == "DELETE" || m == "TRACE" {
return true
}
// proceed with default
mimeTypes = MIME_OCTET
}
parts := strings.Split(mimeTypes, ",")
for _, each := range parts {
var contentType string
if strings.Contains(each, ";") {
contentType = strings.Split(each, ";")[0]
} else {
contentType = each
}
// trim before compare
contentType = strings.Trim(contentType, " ")
for _, consumeableType := range r.Consumes {
if consumeableType == "*/*" || consumeableType == contentType {
return true
}
}
}
return false
}
// Extract the parameters from the request url path
func (r Route) extractParameters(urlPath string) map[string]string {
urlParts := tokenizePath(urlPath)
pathParameters := map[string]string{}
for i, key := range r.pathParts {
var value string
if i >= len(urlParts) {
value = ""
} else {
value = urlParts[i]
}
if strings.HasPrefix(key, "{") { // path-parameter
if colon := strings.Index(key, ":"); colon != -1 {
// extract by regex
regPart := key[colon+1 : len(key)-1]
keyPart := key[1:colon]
if regPart == "*" {
pathParameters[keyPart] = untokenizePath(i, urlParts)
break
} else {
pathParameters[keyPart] = value
}
} else {
// without enclosing {}
pathParameters[key[1:len(key)-1]] = value
}
}
}
return pathParameters
}
// Untokenize back into an URL path using the slash separator
func untokenizePath(offset int, parts []string) string {
var buffer bytes.Buffer
for p := offset; p < len(parts); p++ {
buffer.WriteString(parts[p])
// do not end
if p < len(parts)-1 {
buffer.WriteString("/")
}
}
return buffer.String()
}
// Tokenize an URL path using the slash separator ; the result does not have empty tokens
func tokenizePath(path string) []string {
if "/" == path {
return []string{}
}
return strings.Split(strings.Trim(path, "/"), "/")
}
// for debugging
func (r Route) String() string {
return r.Method + " " + r.Path
}

240
vendor/github.com/emicklei/go-restful/route_builder.go generated vendored Normal file
View file

@ -0,0 +1,240 @@
package restful
// Copyright 2013 Ernest Micklei. All rights reserved.
// Use of this source code is governed by a license
// that can be found in the LICENSE file.
import (
"os"
"reflect"
"runtime"
"strings"
"github.com/emicklei/go-restful/log"
)
// RouteBuilder is a helper to construct Routes.
type RouteBuilder struct {
rootPath string
currentPath string
produces []string
consumes []string
httpMethod string // required
function RouteFunction // required
filters []FilterFunction
// documentation
doc string
notes string
operation string
readSample, writeSample interface{}
parameters []*Parameter
errorMap map[int]ResponseError
}
// Do evaluates each argument with the RouteBuilder itself.
// This allows you to follow DRY principles without breaking the fluent programming style.
// Example:
// ws.Route(ws.DELETE("/{name}").To(t.deletePerson).Do(Returns200, Returns500))
//
// func Returns500(b *RouteBuilder) {
// b.Returns(500, "Internal Server Error", restful.ServiceError{})
// }
func (b *RouteBuilder) Do(oneArgBlocks ...func(*RouteBuilder)) *RouteBuilder {
for _, each := range oneArgBlocks {
each(b)
}
return b
}
// To bind the route to a function.
// If this route is matched with the incoming Http Request then call this function with the *Request,*Response pair. Required.
func (b *RouteBuilder) To(function RouteFunction) *RouteBuilder {
b.function = function
return b
}
// Method specifies what HTTP method to match. Required.
func (b *RouteBuilder) Method(method string) *RouteBuilder {
b.httpMethod = method
return b
}
// Produces specifies what MIME types can be produced ; the matched one will appear in the Content-Type Http header.
func (b *RouteBuilder) Produces(mimeTypes ...string) *RouteBuilder {
b.produces = mimeTypes
return b
}
// Consumes specifies what MIME types can be consumes ; the Accept Http header must matched any of these
func (b *RouteBuilder) Consumes(mimeTypes ...string) *RouteBuilder {
b.consumes = mimeTypes
return b
}
// Path specifies the relative (w.r.t WebService root path) URL path to match. Default is "/".
func (b *RouteBuilder) Path(subPath string) *RouteBuilder {
b.currentPath = subPath
return b
}
// Doc tells what this route is all about. Optional.
func (b *RouteBuilder) Doc(documentation string) *RouteBuilder {
b.doc = documentation
return b
}
// A verbose explanation of the operation behavior. Optional.
func (b *RouteBuilder) Notes(notes string) *RouteBuilder {
b.notes = notes
return b
}
// Reads tells what resource type will be read from the request payload. Optional.
// A parameter of type "body" is added ,required is set to true and the dataType is set to the qualified name of the sample's type.
func (b *RouteBuilder) Reads(sample interface{}) *RouteBuilder {
b.readSample = sample
typeAsName := reflect.TypeOf(sample).String()
bodyParameter := &Parameter{&ParameterData{Name: "body"}}
bodyParameter.beBody()
bodyParameter.Required(true)
bodyParameter.DataType(typeAsName)
b.Param(bodyParameter)
return b
}
// ParameterNamed returns a Parameter already known to the RouteBuilder. Returns nil if not.
// Use this to modify or extend information for the Parameter (through its Data()).
func (b RouteBuilder) ParameterNamed(name string) (p *Parameter) {
for _, each := range b.parameters {
if each.Data().Name == name {
return each
}
}
return p
}
// Writes tells what resource type will be written as the response payload. Optional.
func (b *RouteBuilder) Writes(sample interface{}) *RouteBuilder {
b.writeSample = sample
return b
}
// Param allows you to document the parameters of the Route. It adds a new Parameter (does not check for duplicates).
func (b *RouteBuilder) Param(parameter *Parameter) *RouteBuilder {
if b.parameters == nil {
b.parameters = []*Parameter{}
}
b.parameters = append(b.parameters, parameter)
return b
}
// Operation allows you to document what the acutal method/function call is of the Route.
// Unless called, the operation name is derived from the RouteFunction set using To(..).
func (b *RouteBuilder) Operation(name string) *RouteBuilder {
b.operation = name
return b
}
// ReturnsError is deprecated, use Returns instead.
func (b *RouteBuilder) ReturnsError(code int, message string, model interface{}) *RouteBuilder {
log.Print("ReturnsError is deprecated, use Returns instead.")
return b.Returns(code, message, model)
}
// Returns allows you to document what responses (errors or regular) can be expected.
// The model parameter is optional ; either pass a struct instance or use nil if not applicable.
func (b *RouteBuilder) Returns(code int, message string, model interface{}) *RouteBuilder {
err := ResponseError{
Code: code,
Message: message,
Model: model,
}
// lazy init because there is no NewRouteBuilder (yet)
if b.errorMap == nil {
b.errorMap = map[int]ResponseError{}
}
b.errorMap[code] = err
return b
}
type ResponseError struct {
Code int
Message string
Model interface{}
}
func (b *RouteBuilder) servicePath(path string) *RouteBuilder {
b.rootPath = path
return b
}
// Filter appends a FilterFunction to the end of filters for this Route to build.
func (b *RouteBuilder) Filter(filter FilterFunction) *RouteBuilder {
b.filters = append(b.filters, filter)
return b
}
// If no specific Route path then set to rootPath
// If no specific Produces then set to rootProduces
// If no specific Consumes then set to rootConsumes
func (b *RouteBuilder) copyDefaults(rootProduces, rootConsumes []string) {
if len(b.produces) == 0 {
b.produces = rootProduces
}
if len(b.consumes) == 0 {
b.consumes = rootConsumes
}
}
// Build creates a new Route using the specification details collected by the RouteBuilder
func (b *RouteBuilder) Build() Route {
pathExpr, err := newPathExpression(b.currentPath)
if err != nil {
log.Printf("[restful] Invalid path:%s because:%v", b.currentPath, err)
os.Exit(1)
}
if b.function == nil {
log.Printf("[restful] No function specified for route:" + b.currentPath)
os.Exit(1)
}
operationName := b.operation
if len(operationName) == 0 && b.function != nil {
// extract from definition
operationName = nameOfFunction(b.function)
}
route := Route{
Method: b.httpMethod,
Path: concatPath(b.rootPath, b.currentPath),
Produces: b.produces,
Consumes: b.consumes,
Function: b.function,
Filters: b.filters,
relativePath: b.currentPath,
pathExpr: pathExpr,
Doc: b.doc,
Notes: b.notes,
Operation: operationName,
ParameterDocs: b.parameters,
ResponseErrors: b.errorMap,
ReadSample: b.readSample,
WriteSample: b.writeSample}
route.postBuild()
return route
}
func concatPath(path1, path2 string) string {
return strings.TrimRight(path1, "/") + "/" + strings.TrimLeft(path2, "/")
}
// nameOfFunction returns the short name of the function f for documentation.
// It uses a runtime feature for debugging ; its value may change for later Go versions.
func nameOfFunction(f interface{}) string {
fun := runtime.FuncForPC(reflect.ValueOf(f).Pointer())
tokenized := strings.Split(fun.Name(), ".")
last := tokenized[len(tokenized)-1]
last = strings.TrimSuffix(last, ")·fm") // < Go 1.5
last = strings.TrimSuffix(last, ")-fm") // Go 1.5
last = strings.TrimSuffix(last, "·fm") // < Go 1.5
last = strings.TrimSuffix(last, "-fm") // Go 1.5
return last
}

18
vendor/github.com/emicklei/go-restful/router.go generated vendored Normal file
View file

@ -0,0 +1,18 @@
package restful
// Copyright 2013 Ernest Micklei. All rights reserved.
// Use of this source code is governed by a license
// that can be found in the LICENSE file.
import "net/http"
// A RouteSelector finds the best matching Route given the input HTTP Request
type RouteSelector interface {
// SelectRoute finds a Route given the input HTTP Request and a list of WebServices.
// It returns a selected Route and its containing WebService or an error indicating
// a problem.
SelectRoute(
webServices []*WebService,
httpRequest *http.Request) (selectedService *WebService, selected *Route, err error)
}

23
vendor/github.com/emicklei/go-restful/service_error.go generated vendored Normal file
View file

@ -0,0 +1,23 @@
package restful
// Copyright 2013 Ernest Micklei. All rights reserved.
// Use of this source code is governed by a license
// that can be found in the LICENSE file.
import "fmt"
// ServiceError is a transport object to pass information about a non-Http error occurred in a WebService while processing a request.
type ServiceError struct {
Code int
Message string
}
// NewError returns a ServiceError using the code and reason
func NewError(code int, message string) ServiceError {
return ServiceError{Code: code, Message: message}
}
// Error returns a text representation of the service error
func (s ServiceError) Error() string {
return fmt.Sprintf("[ServiceError:%v] %v", s.Code, s.Message)
}

View file

@ -0,0 +1,64 @@
package swagger
// Copyright 2015 Ernest Micklei. All rights reserved.
// Use of this source code is governed by a license
// that can be found in the LICENSE file.
import (
"bytes"
"encoding/json"
)
// ApiDeclarationList maintains an ordered list of ApiDeclaration.
type ApiDeclarationList struct {
List []ApiDeclaration
}
// At returns the ApiDeclaration by its path unless absent, then ok is false
func (l *ApiDeclarationList) At(path string) (a ApiDeclaration, ok bool) {
for _, each := range l.List {
if each.ResourcePath == path {
return each, true
}
}
return a, false
}
// Put adds or replaces a ApiDeclaration with this name
func (l *ApiDeclarationList) Put(path string, a ApiDeclaration) {
// maybe replace existing
for i, each := range l.List {
if each.ResourcePath == path {
// replace
l.List[i] = a
return
}
}
// add
l.List = append(l.List, a)
}
// Do enumerates all the properties, each with its assigned name
func (l *ApiDeclarationList) Do(block func(path string, decl ApiDeclaration)) {
for _, each := range l.List {
block(each.ResourcePath, each)
}
}
// MarshalJSON writes the ModelPropertyList as if it was a map[string]ModelProperty
func (l ApiDeclarationList) MarshalJSON() ([]byte, error) {
var buf bytes.Buffer
encoder := json.NewEncoder(&buf)
buf.WriteString("{\n")
for i, each := range l.List {
buf.WriteString("\"")
buf.WriteString(each.ResourcePath)
buf.WriteString("\": ")
encoder.Encode(each)
if i < len(l.List)-1 {
buf.WriteString(",\n")
}
}
buf.WriteString("}")
return buf.Bytes(), nil
}

View file

@ -0,0 +1,32 @@
package swagger
import (
"net/http"
"github.com/emicklei/go-restful"
)
// PostBuildDeclarationMapFunc can be used to modify the api declaration map.
type PostBuildDeclarationMapFunc func(apiDeclarationMap *ApiDeclarationList)
type Config struct {
// url where the services are available, e.g. http://localhost:8080
// if left empty then the basePath of Swagger is taken from the actual request
WebServicesUrl string
// path where the JSON api is avaiable , e.g. /apidocs
ApiPath string
// [optional] path where the swagger UI will be served, e.g. /swagger
SwaggerPath string
// [optional] location of folder containing Swagger HTML5 application index.html
SwaggerFilePath string
// api listing is constructed from this list of restful WebServices.
WebServices []*restful.WebService
// will serve all static content (scripts,pages,images)
StaticHandler http.Handler
// [optional] on default CORS (Cross-Origin-Resource-Sharing) is enabled.
DisableCORS bool
// Top-level API version. Is reflected in the resource listing.
ApiVersion string
// If set then call this handler after building the complete ApiDeclaration Map
PostBuildHandler PostBuildDeclarationMapFunc
}

View file

@ -0,0 +1,403 @@
package swagger
import (
"encoding/json"
"reflect"
"strings"
)
// ModelBuildable is used for extending Structs that need more control over
// how the Model appears in the Swagger api declaration.
type ModelBuildable interface {
PostBuildModel(m *Model) *Model
}
type modelBuilder struct {
Models *ModelList
}
type documentable interface {
SwaggerDoc() map[string]string
}
// Check if this structure has a method with signature func (<theModel>) SwaggerDoc() map[string]string
// If it exists, retrive the documentation and overwrite all struct tag descriptions
func getDocFromMethodSwaggerDoc2(model reflect.Type) map[string]string {
if docable, ok := reflect.New(model).Elem().Interface().(documentable); ok {
return docable.SwaggerDoc()
}
return make(map[string]string)
}
// addModelFrom creates and adds a Model to the builder and detects and calls
// the post build hook for customizations
func (b modelBuilder) addModelFrom(sample interface{}) {
if modelOrNil := b.addModel(reflect.TypeOf(sample), ""); modelOrNil != nil {
// allow customizations
if buildable, ok := sample.(ModelBuildable); ok {
modelOrNil = buildable.PostBuildModel(modelOrNil)
b.Models.Put(modelOrNil.Id, *modelOrNil)
}
}
}
func (b modelBuilder) addModel(st reflect.Type, nameOverride string) *Model {
modelName := b.keyFrom(st)
if nameOverride != "" {
modelName = nameOverride
}
// no models needed for primitive types
if b.isPrimitiveType(modelName) {
return nil
}
// see if we already have visited this model
if _, ok := b.Models.At(modelName); ok {
return nil
}
sm := Model{
Id: modelName,
Required: []string{},
Properties: ModelPropertyList{}}
// reference the model before further initializing (enables recursive structs)
b.Models.Put(modelName, sm)
// check for slice or array
if st.Kind() == reflect.Slice || st.Kind() == reflect.Array {
b.addModel(st.Elem(), "")
return &sm
}
// check for structure or primitive type
if st.Kind() != reflect.Struct {
return &sm
}
fullDoc := getDocFromMethodSwaggerDoc2(st)
modelDescriptions := []string{}
for i := 0; i < st.NumField(); i++ {
field := st.Field(i)
jsonName, modelDescription, prop := b.buildProperty(field, &sm, modelName)
if len(modelDescription) > 0 {
modelDescriptions = append(modelDescriptions, modelDescription)
}
// add if not omitted
if len(jsonName) != 0 {
// update description
if fieldDoc, ok := fullDoc[jsonName]; ok {
prop.Description = fieldDoc
}
// update Required
if b.isPropertyRequired(field) {
sm.Required = append(sm.Required, jsonName)
}
sm.Properties.Put(jsonName, prop)
}
}
// We always overwrite documentation if SwaggerDoc method exists
// "" is special for documenting the struct itself
if modelDoc, ok := fullDoc[""]; ok {
sm.Description = modelDoc
} else if len(modelDescriptions) != 0 {
sm.Description = strings.Join(modelDescriptions, "\n")
}
// update model builder with completed model
b.Models.Put(modelName, sm)
return &sm
}
func (b modelBuilder) isPropertyRequired(field reflect.StructField) bool {
required := true
if jsonTag := field.Tag.Get("json"); jsonTag != "" {
s := strings.Split(jsonTag, ",")
if len(s) > 1 && s[1] == "omitempty" {
return false
}
}
return required
}
func (b modelBuilder) buildProperty(field reflect.StructField, model *Model, modelName string) (jsonName, modelDescription string, prop ModelProperty) {
jsonName = b.jsonNameOfField(field)
if len(jsonName) == 0 {
// empty name signals skip property
return "", "", prop
}
if tag := field.Tag.Get("modelDescription"); tag != "" {
modelDescription = tag
}
fieldType := field.Type
prop.setPropertyMetadata(field)
// check if type is doing its own marshalling
marshalerType := reflect.TypeOf((*json.Marshaler)(nil)).Elem()
if fieldType.Implements(marshalerType) {
var pType = "string"
if prop.Type == nil {
prop.Type = &pType
}
if prop.Format == "" {
prop.Format = b.jsonSchemaFormat(fieldType.String())
}
return jsonName, modelDescription, prop
}
// check if annotation says it is a string
if jsonTag := field.Tag.Get("json"); jsonTag != "" {
s := strings.Split(jsonTag, ",")
if len(s) > 1 && s[1] == "string" {
stringt := "string"
prop.Type = &stringt
return jsonName, modelDescription, prop
}
}
fieldKind := fieldType.Kind()
switch {
case fieldKind == reflect.Struct:
jsonName, prop := b.buildStructTypeProperty(field, jsonName, model)
return jsonName, modelDescription, prop
case fieldKind == reflect.Slice || fieldKind == reflect.Array:
jsonName, prop := b.buildArrayTypeProperty(field, jsonName, modelName)
return jsonName, modelDescription, prop
case fieldKind == reflect.Ptr:
jsonName, prop := b.buildPointerTypeProperty(field, jsonName, modelName)
return jsonName, modelDescription, prop
case fieldKind == reflect.String:
stringt := "string"
prop.Type = &stringt
return jsonName, modelDescription, prop
case fieldKind == reflect.Map:
// if it's a map, it's unstructured, and swagger 1.2 can't handle it
anyt := "any"
prop.Type = &anyt
return jsonName, modelDescription, prop
}
if b.isPrimitiveType(fieldType.String()) {
mapped := b.jsonSchemaType(fieldType.String())
prop.Type = &mapped
prop.Format = b.jsonSchemaFormat(fieldType.String())
return jsonName, modelDescription, prop
}
modelType := fieldType.String()
prop.Ref = &modelType
if fieldType.Name() == "" { // override type of anonymous structs
nestedTypeName := modelName + "." + jsonName
prop.Ref = &nestedTypeName
b.addModel(fieldType, nestedTypeName)
}
return jsonName, modelDescription, prop
}
func hasNamedJSONTag(field reflect.StructField) bool {
parts := strings.Split(field.Tag.Get("json"), ",")
if len(parts) == 0 {
return false
}
for _, s := range parts[1:] {
if s == "inline" {
return false
}
}
return len(parts[0]) > 0
}
func (b modelBuilder) buildStructTypeProperty(field reflect.StructField, jsonName string, model *Model) (nameJson string, prop ModelProperty) {
fieldType := field.Type
prop.setPropertyMetadata(field)
// check for anonymous
if len(fieldType.Name()) == 0 {
// anonymous
anonType := model.Id + "." + jsonName
b.addModel(fieldType, anonType)
prop.Ref = &anonType
return jsonName, prop
}
if field.Name == fieldType.Name() && field.Anonymous && !hasNamedJSONTag(field) {
// embedded struct
sub := modelBuilder{new(ModelList)}
sub.addModel(fieldType, "")
subKey := sub.keyFrom(fieldType)
// merge properties from sub
subModel, _ := sub.Models.At(subKey)
subModel.Properties.Do(func(k string, v ModelProperty) {
model.Properties.Put(k, v)
// if subModel says this property is required then include it
required := false
for _, each := range subModel.Required {
if k == each {
required = true
break
}
}
if required {
model.Required = append(model.Required, k)
}
})
// add all new referenced models
sub.Models.Do(func(key string, sub Model) {
if key != subKey {
if _, ok := b.Models.At(key); !ok {
b.Models.Put(key, sub)
}
}
})
// empty name signals skip property
return "", prop
}
// simple struct
b.addModel(fieldType, "")
var pType = fieldType.String()
prop.Ref = &pType
return jsonName, prop
}
func (b modelBuilder) buildArrayTypeProperty(field reflect.StructField, jsonName, modelName string) (nameJson string, prop ModelProperty) {
fieldType := field.Type
prop.setPropertyMetadata(field)
var pType = "array"
prop.Type = &pType
elemTypeName := b.getElementTypeName(modelName, jsonName, fieldType.Elem())
prop.Items = new(Item)
if b.isPrimitiveType(elemTypeName) {
mapped := b.jsonSchemaType(elemTypeName)
prop.Items.Type = &mapped
} else {
prop.Items.Ref = &elemTypeName
}
// add|overwrite model for element type
if fieldType.Elem().Kind() == reflect.Ptr {
fieldType = fieldType.Elem()
}
b.addModel(fieldType.Elem(), elemTypeName)
return jsonName, prop
}
func (b modelBuilder) buildPointerTypeProperty(field reflect.StructField, jsonName, modelName string) (nameJson string, prop ModelProperty) {
fieldType := field.Type
prop.setPropertyMetadata(field)
// override type of pointer to list-likes
if fieldType.Elem().Kind() == reflect.Slice || fieldType.Elem().Kind() == reflect.Array {
var pType = "array"
prop.Type = &pType
elemName := b.getElementTypeName(modelName, jsonName, fieldType.Elem().Elem())
prop.Items = &Item{Ref: &elemName}
// add|overwrite model for element type
b.addModel(fieldType.Elem().Elem(), elemName)
} else {
// non-array, pointer type
var pType = b.jsonSchemaType(fieldType.String()[1:]) // no star, include pkg path
if b.isPrimitiveType(fieldType.String()[1:]) {
prop.Type = &pType
prop.Format = b.jsonSchemaFormat(fieldType.String()[1:])
return jsonName, prop
}
prop.Ref = &pType
elemName := ""
if fieldType.Elem().Name() == "" {
elemName = modelName + "." + jsonName
prop.Ref = &elemName
}
b.addModel(fieldType.Elem(), elemName)
}
return jsonName, prop
}
func (b modelBuilder) getElementTypeName(modelName, jsonName string, t reflect.Type) string {
if t.Kind() == reflect.Ptr {
return t.String()[1:]
}
if t.Name() == "" {
return modelName + "." + jsonName
}
if b.isPrimitiveType(t.Name()) {
return b.jsonSchemaType(t.Name())
}
return b.keyFrom(t)
}
func (b modelBuilder) keyFrom(st reflect.Type) string {
key := st.String()
if len(st.Name()) == 0 { // unnamed type
// Swagger UI has special meaning for [
key = strings.Replace(key, "[]", "||", -1)
}
return key
}
// see also https://golang.org/ref/spec#Numeric_types
func (b modelBuilder) isPrimitiveType(modelName string) bool {
return strings.Contains("uint8 uint16 uint32 uint64 int int8 int16 int32 int64 float32 float64 bool string byte rune time.Time", modelName)
}
// jsonNameOfField returns the name of the field as it should appear in JSON format
// An empty string indicates that this field is not part of the JSON representation
func (b modelBuilder) jsonNameOfField(field reflect.StructField) string {
if jsonTag := field.Tag.Get("json"); jsonTag != "" {
s := strings.Split(jsonTag, ",")
if s[0] == "-" {
// empty name signals skip property
return ""
} else if s[0] != "" {
return s[0]
}
}
return field.Name
}
// see also http://json-schema.org/latest/json-schema-core.html#anchor8
func (b modelBuilder) jsonSchemaType(modelName string) string {
schemaMap := map[string]string{
"uint8": "integer",
"uint16": "integer",
"uint32": "integer",
"uint64": "integer",
"int": "integer",
"int8": "integer",
"int16": "integer",
"int32": "integer",
"int64": "integer",
"byte": "integer",
"float64": "number",
"float32": "number",
"bool": "boolean",
"time.Time": "string",
}
mapped, ok := schemaMap[modelName]
if !ok {
return modelName // use as is (custom or struct)
}
return mapped
}
func (b modelBuilder) jsonSchemaFormat(modelName string) string {
schemaMap := map[string]string{
"int": "int32",
"int32": "int32",
"int64": "int64",
"byte": "byte",
"uint8": "byte",
"float64": "double",
"float32": "float",
"time.Time": "date-time",
"*time.Time": "date-time",
}
mapped, ok := schemaMap[modelName]
if !ok {
return "" // no format
}
return mapped
}

View file

@ -0,0 +1,86 @@
package swagger
// Copyright 2015 Ernest Micklei. All rights reserved.
// Use of this source code is governed by a license
// that can be found in the LICENSE file.
import (
"bytes"
"encoding/json"
)
// NamedModel associates a name with a Model (not using its Id)
type NamedModel struct {
Name string
Model Model
}
// ModelList encapsulates a list of NamedModel (association)
type ModelList struct {
List []NamedModel
}
// Put adds or replaces a Model by its name
func (l *ModelList) Put(name string, model Model) {
for i, each := range l.List {
if each.Name == name {
// replace
l.List[i] = NamedModel{name, model}
return
}
}
// add
l.List = append(l.List, NamedModel{name, model})
}
// At returns a Model by its name, ok is false if absent
func (l *ModelList) At(name string) (m Model, ok bool) {
for _, each := range l.List {
if each.Name == name {
return each.Model, true
}
}
return m, false
}
// Do enumerates all the models, each with its assigned name
func (l *ModelList) Do(block func(name string, value Model)) {
for _, each := range l.List {
block(each.Name, each.Model)
}
}
// MarshalJSON writes the ModelList as if it was a map[string]Model
func (l ModelList) MarshalJSON() ([]byte, error) {
var buf bytes.Buffer
encoder := json.NewEncoder(&buf)
buf.WriteString("{\n")
for i, each := range l.List {
buf.WriteString("\"")
buf.WriteString(each.Name)
buf.WriteString("\": ")
encoder.Encode(each.Model)
if i < len(l.List)-1 {
buf.WriteString(",\n")
}
}
buf.WriteString("}")
return buf.Bytes(), nil
}
// UnmarshalJSON reads back a ModelList. This is an expensive operation.
func (l *ModelList) UnmarshalJSON(data []byte) error {
raw := map[string]interface{}{}
json.NewDecoder(bytes.NewReader(data)).Decode(&raw)
for k, v := range raw {
// produces JSON bytes for each value
data, err := json.Marshal(v)
if err != nil {
return err
}
var m Model
json.NewDecoder(bytes.NewReader(data)).Decode(&m)
l.Put(k, m)
}
return nil
}

View file

@ -0,0 +1,59 @@
package swagger
import (
"reflect"
"strings"
)
func (prop *ModelProperty) setDescription(field reflect.StructField) {
if tag := field.Tag.Get("description"); tag != "" {
prop.Description = tag
}
}
func (prop *ModelProperty) setDefaultValue(field reflect.StructField) {
if tag := field.Tag.Get("default"); tag != "" {
prop.DefaultValue = Special(tag)
}
}
func (prop *ModelProperty) setEnumValues(field reflect.StructField) {
// We use | to separate the enum values. This value is chosen
// since its unlikely to be useful in actual enumeration values.
if tag := field.Tag.Get("enum"); tag != "" {
prop.Enum = strings.Split(tag, "|")
}
}
func (prop *ModelProperty) setMaximum(field reflect.StructField) {
if tag := field.Tag.Get("maximum"); tag != "" {
prop.Maximum = tag
}
}
func (prop *ModelProperty) setMinimum(field reflect.StructField) {
if tag := field.Tag.Get("minimum"); tag != "" {
prop.Minimum = tag
}
}
func (prop *ModelProperty) setUniqueItems(field reflect.StructField) {
tag := field.Tag.Get("unique")
switch tag {
case "true":
v := true
prop.UniqueItems = &v
case "false":
v := false
prop.UniqueItems = &v
}
}
func (prop *ModelProperty) setPropertyMetadata(field reflect.StructField) {
prop.setDescription(field)
prop.setEnumValues(field)
prop.setMinimum(field)
prop.setMaximum(field)
prop.setUniqueItems(field)
prop.setDefaultValue(field)
}

View file

@ -0,0 +1,87 @@
package swagger
// Copyright 2015 Ernest Micklei. All rights reserved.
// Use of this source code is governed by a license
// that can be found in the LICENSE file.
import (
"bytes"
"encoding/json"
)
// NamedModelProperty associates a name to a ModelProperty
type NamedModelProperty struct {
Name string
Property ModelProperty
}
// ModelPropertyList encapsulates a list of NamedModelProperty (association)
type ModelPropertyList struct {
List []NamedModelProperty
}
// At returns the ModelPropety by its name unless absent, then ok is false
func (l *ModelPropertyList) At(name string) (p ModelProperty, ok bool) {
for _, each := range l.List {
if each.Name == name {
return each.Property, true
}
}
return p, false
}
// Put adds or replaces a ModelProperty with this name
func (l *ModelPropertyList) Put(name string, prop ModelProperty) {
// maybe replace existing
for i, each := range l.List {
if each.Name == name {
// replace
l.List[i] = NamedModelProperty{Name: name, Property: prop}
return
}
}
// add
l.List = append(l.List, NamedModelProperty{Name: name, Property: prop})
}
// Do enumerates all the properties, each with its assigned name
func (l *ModelPropertyList) Do(block func(name string, value ModelProperty)) {
for _, each := range l.List {
block(each.Name, each.Property)
}
}
// MarshalJSON writes the ModelPropertyList as if it was a map[string]ModelProperty
func (l ModelPropertyList) MarshalJSON() ([]byte, error) {
var buf bytes.Buffer
encoder := json.NewEncoder(&buf)
buf.WriteString("{\n")
for i, each := range l.List {
buf.WriteString("\"")
buf.WriteString(each.Name)
buf.WriteString("\": ")
encoder.Encode(each.Property)
if i < len(l.List)-1 {
buf.WriteString(",\n")
}
}
buf.WriteString("}")
return buf.Bytes(), nil
}
// UnmarshalJSON reads back a ModelPropertyList. This is an expensive operation.
func (l *ModelPropertyList) UnmarshalJSON(data []byte) error {
raw := map[string]interface{}{}
json.NewDecoder(bytes.NewReader(data)).Decode(&raw)
for k, v := range raw {
// produces JSON bytes for each value
data, err := json.Marshal(v)
if err != nil {
return err
}
var m ModelProperty
json.NewDecoder(bytes.NewReader(data)).Decode(&m)
l.Put(k, m)
}
return nil
}

View file

@ -0,0 +1,36 @@
package swagger
// Copyright 2015 Ernest Micklei. All rights reserved.
// Use of this source code is governed by a license
// that can be found in the LICENSE file.
import "github.com/emicklei/go-restful"
type orderedRouteMap struct {
elements map[string][]restful.Route
keys []string
}
func newOrderedRouteMap() *orderedRouteMap {
return &orderedRouteMap{
elements: map[string][]restful.Route{},
keys: []string{},
}
}
func (o *orderedRouteMap) Add(key string, route restful.Route) {
routes, ok := o.elements[key]
if ok {
routes = append(routes, route)
o.elements[key] = routes
return
}
o.elements[key] = []restful.Route{route}
o.keys = append(o.keys, key)
}
func (o *orderedRouteMap) Do(block func(key string, routes []restful.Route)) {
for _, k := range o.keys {
block(k, o.elements[k])
}
}

View file

@ -0,0 +1,184 @@
// Package swagger implements the structures of the Swagger
// https://github.com/wordnik/swagger-spec/blob/master/versions/1.2.md
package swagger
const swaggerVersion = "1.2"
// 4.3.3 Data Type Fields
type DataTypeFields struct {
Type *string `json:"type,omitempty"` // if Ref not used
Ref *string `json:"$ref,omitempty"` // if Type not used
Format string `json:"format,omitempty"`
DefaultValue Special `json:"defaultValue,omitempty"`
Enum []string `json:"enum,omitempty"`
Minimum string `json:"minimum,omitempty"`
Maximum string `json:"maximum,omitempty"`
Items *Item `json:"items,omitempty"`
UniqueItems *bool `json:"uniqueItems,omitempty"`
}
type Special string
// 4.3.4 Items Object
type Item struct {
Type *string `json:"type,omitempty"`
Ref *string `json:"$ref,omitempty"`
Format string `json:"format,omitempty"`
}
// 5.1 Resource Listing
type ResourceListing struct {
SwaggerVersion string `json:"swaggerVersion"` // e.g 1.2
Apis []Resource `json:"apis"`
ApiVersion string `json:"apiVersion"`
Info Info `json:"info"`
Authorizations []Authorization `json:"authorizations,omitempty"`
}
// 5.1.2 Resource Object
type Resource struct {
Path string `json:"path"` // relative or absolute, must start with /
Description string `json:"description"`
}
// 5.1.3 Info Object
type Info struct {
Title string `json:"title"`
Description string `json:"description"`
TermsOfServiceUrl string `json:"termsOfServiceUrl,omitempty"`
Contact string `json:"contact,omitempty"`
License string `json:"license,omitempty"`
LicensUrl string `json:"licensUrl,omitempty"`
}
// 5.1.5
type Authorization struct {
Type string `json:"type"`
PassAs string `json:"passAs"`
Keyname string `json:"keyname"`
Scopes []Scope `json:"scopes"`
GrantTypes []GrantType `json:"grandTypes"`
}
// 5.1.6, 5.2.11
type Scope struct {
// Required. The name of the scope.
Scope string `json:"scope"`
// Recommended. A short description of the scope.
Description string `json:"description"`
}
// 5.1.7
type GrantType struct {
Implicit Implicit `json:"implicit"`
AuthorizationCode AuthorizationCode `json:"authorization_code"`
}
// 5.1.8 Implicit Object
type Implicit struct {
// Required. The login endpoint definition.
loginEndpoint LoginEndpoint `json:"loginEndpoint"`
// An optional alternative name to standard "access_token" OAuth2 parameter.
TokenName string `json:"tokenName"`
}
// 5.1.9 Authorization Code Object
type AuthorizationCode struct {
TokenRequestEndpoint TokenRequestEndpoint `json:"tokenRequestEndpoint"`
TokenEndpoint TokenEndpoint `json:"tokenEndpoint"`
}
// 5.1.10 Login Endpoint Object
type LoginEndpoint struct {
// Required. The URL of the authorization endpoint for the implicit grant flow. The value SHOULD be in a URL format.
Url string `json:"url"`
}
// 5.1.11 Token Request Endpoint Object
type TokenRequestEndpoint struct {
// Required. The URL of the authorization endpoint for the authentication code grant flow. The value SHOULD be in a URL format.
Url string `json:"url"`
// An optional alternative name to standard "client_id" OAuth2 parameter.
ClientIdName string `json:"clientIdName"`
// An optional alternative name to the standard "client_secret" OAuth2 parameter.
ClientSecretName string `json:"clientSecretName"`
}
// 5.1.12 Token Endpoint Object
type TokenEndpoint struct {
// Required. The URL of the token endpoint for the authentication code grant flow. The value SHOULD be in a URL format.
Url string `json:"url"`
// An optional alternative name to standard "access_token" OAuth2 parameter.
TokenName string `json:"tokenName"`
}
// 5.2 API Declaration
type ApiDeclaration struct {
SwaggerVersion string `json:"swaggerVersion"`
ApiVersion string `json:"apiVersion"`
BasePath string `json:"basePath"`
ResourcePath string `json:"resourcePath"` // must start with /
Apis []Api `json:"apis,omitempty"`
Models ModelList `json:"models,omitempty"`
Produces []string `json:"produces,omitempty"`
Consumes []string `json:"consumes,omitempty"`
Authorizations []Authorization `json:"authorizations,omitempty"`
}
// 5.2.2 API Object
type Api struct {
Path string `json:"path"` // relative or absolute, must start with /
Description string `json:"description"`
Operations []Operation `json:"operations,omitempty"`
}
// 5.2.3 Operation Object
type Operation struct {
Type string `json:"type"`
Method string `json:"method"`
Summary string `json:"summary,omitempty"`
Notes string `json:"notes,omitempty"`
Nickname string `json:"nickname"`
Authorizations []Authorization `json:"authorizations,omitempty"`
Parameters []Parameter `json:"parameters"`
ResponseMessages []ResponseMessage `json:"responseMessages,omitempty"` // optional
Produces []string `json:"produces,omitempty"`
Consumes []string `json:"consumes,omitempty"`
Deprecated string `json:"deprecated,omitempty"`
}
// 5.2.4 Parameter Object
type Parameter struct {
DataTypeFields
ParamType string `json:"paramType"` // path,query,body,header,form
Name string `json:"name"`
Description string `json:"description"`
Required bool `json:"required"`
AllowMultiple bool `json:"allowMultiple"`
}
// 5.2.5 Response Message Object
type ResponseMessage struct {
Code int `json:"code"`
Message string `json:"message"`
ResponseModel string `json:"responseModel,omitempty"`
}
// 5.2.6, 5.2.7 Models Object
type Model struct {
Id string `json:"id"`
Description string `json:"description,omitempty"`
Required []string `json:"required,omitempty"`
Properties ModelPropertyList `json:"properties"`
SubTypes []string `json:"subTypes,omitempty"`
Discriminator string `json:"discriminator,omitempty"`
}
// 5.2.8 Properties Object
type ModelProperty struct {
DataTypeFields
Description string `json:"description,omitempty"`
}
// 5.2.10
type Authorizations map[string]Authorization

View file

@ -0,0 +1,388 @@
package swagger
import (
"fmt"
"github.com/emicklei/go-restful"
// "github.com/emicklei/hopwatch"
"net/http"
"reflect"
"sort"
"strings"
"github.com/emicklei/go-restful/log"
)
type SwaggerService struct {
config Config
apiDeclarationMap *ApiDeclarationList
}
func newSwaggerService(config Config) *SwaggerService {
return &SwaggerService{
config: config,
apiDeclarationMap: new(ApiDeclarationList)}
}
// LogInfo is the function that is called when this package needs to log. It defaults to log.Printf
var LogInfo = func(format string, v ...interface{}) {
// use the restful package-wide logger
log.Printf(format, v...)
}
// InstallSwaggerService add the WebService that provides the API documentation of all services
// conform the Swagger documentation specifcation. (https://github.com/wordnik/swagger-core/wiki).
func InstallSwaggerService(aSwaggerConfig Config) {
RegisterSwaggerService(aSwaggerConfig, restful.DefaultContainer)
}
// RegisterSwaggerService add the WebService that provides the API documentation of all services
// conform the Swagger documentation specifcation. (https://github.com/wordnik/swagger-core/wiki).
func RegisterSwaggerService(config Config, wsContainer *restful.Container) {
sws := newSwaggerService(config)
ws := new(restful.WebService)
ws.Path(config.ApiPath)
ws.Produces(restful.MIME_JSON)
if config.DisableCORS {
ws.Filter(enableCORS)
}
ws.Route(ws.GET("/").To(sws.getListing))
ws.Route(ws.GET("/{a}").To(sws.getDeclarations))
ws.Route(ws.GET("/{a}/{b}").To(sws.getDeclarations))
ws.Route(ws.GET("/{a}/{b}/{c}").To(sws.getDeclarations))
ws.Route(ws.GET("/{a}/{b}/{c}/{d}").To(sws.getDeclarations))
ws.Route(ws.GET("/{a}/{b}/{c}/{d}/{e}").To(sws.getDeclarations))
ws.Route(ws.GET("/{a}/{b}/{c}/{d}/{e}/{f}").To(sws.getDeclarations))
ws.Route(ws.GET("/{a}/{b}/{c}/{d}/{e}/{f}/{g}").To(sws.getDeclarations))
LogInfo("[restful/swagger] listing is available at %v%v", config.WebServicesUrl, config.ApiPath)
wsContainer.Add(ws)
// Build all ApiDeclarations
for _, each := range config.WebServices {
rootPath := each.RootPath()
// skip the api service itself
if rootPath != config.ApiPath {
if rootPath == "" || rootPath == "/" {
// use routes
for _, route := range each.Routes() {
entry := staticPathFromRoute(route)
_, exists := sws.apiDeclarationMap.At(entry)
if !exists {
sws.apiDeclarationMap.Put(entry, sws.composeDeclaration(each, entry))
}
}
} else { // use root path
sws.apiDeclarationMap.Put(each.RootPath(), sws.composeDeclaration(each, each.RootPath()))
}
}
}
// if specified then call the PostBuilderHandler
if config.PostBuildHandler != nil {
config.PostBuildHandler(sws.apiDeclarationMap)
}
// Check paths for UI serving
if config.StaticHandler == nil && config.SwaggerFilePath != "" && config.SwaggerPath != "" {
swaggerPathSlash := config.SwaggerPath
// path must end with slash /
if "/" != config.SwaggerPath[len(config.SwaggerPath)-1:] {
LogInfo("[restful/swagger] use corrected SwaggerPath ; must end with slash (/)")
swaggerPathSlash += "/"
}
LogInfo("[restful/swagger] %v%v is mapped to folder %v", config.WebServicesUrl, swaggerPathSlash, config.SwaggerFilePath)
wsContainer.Handle(swaggerPathSlash, http.StripPrefix(swaggerPathSlash, http.FileServer(http.Dir(config.SwaggerFilePath))))
//if we define a custom static handler use it
} else if config.StaticHandler != nil && config.SwaggerPath != "" {
swaggerPathSlash := config.SwaggerPath
// path must end with slash /
if "/" != config.SwaggerPath[len(config.SwaggerPath)-1:] {
LogInfo("[restful/swagger] use corrected SwaggerFilePath ; must end with slash (/)")
swaggerPathSlash += "/"
}
LogInfo("[restful/swagger] %v%v is mapped to custom Handler %T", config.WebServicesUrl, swaggerPathSlash, config.StaticHandler)
wsContainer.Handle(swaggerPathSlash, config.StaticHandler)
} else {
LogInfo("[restful/swagger] Swagger(File)Path is empty ; no UI is served")
}
}
func staticPathFromRoute(r restful.Route) string {
static := r.Path
bracket := strings.Index(static, "{")
if bracket <= 1 { // result cannot be empty
return static
}
if bracket != -1 {
static = r.Path[:bracket]
}
if strings.HasSuffix(static, "/") {
return static[:len(static)-1]
} else {
return static
}
}
func enableCORS(req *restful.Request, resp *restful.Response, chain *restful.FilterChain) {
if origin := req.HeaderParameter(restful.HEADER_Origin); origin != "" {
// prevent duplicate header
if len(resp.Header().Get(restful.HEADER_AccessControlAllowOrigin)) == 0 {
resp.AddHeader(restful.HEADER_AccessControlAllowOrigin, origin)
}
}
chain.ProcessFilter(req, resp)
}
func (sws SwaggerService) getListing(req *restful.Request, resp *restful.Response) {
listing := ResourceListing{SwaggerVersion: swaggerVersion, ApiVersion: sws.config.ApiVersion}
sws.apiDeclarationMap.Do(func(k string, v ApiDeclaration) {
ref := Resource{Path: k}
if len(v.Apis) > 0 { // use description of first (could still be empty)
ref.Description = v.Apis[0].Description
}
listing.Apis = append(listing.Apis, ref)
})
resp.WriteAsJson(listing)
}
func (sws SwaggerService) getDeclarations(req *restful.Request, resp *restful.Response) {
decl, ok := sws.apiDeclarationMap.At(composeRootPath(req))
if !ok {
resp.WriteErrorString(http.StatusNotFound, "ApiDeclaration not found")
return
}
// unless WebServicesUrl is given
if len(sws.config.WebServicesUrl) == 0 {
// update base path from the actual request
// TODO how to detect https? assume http for now
var host string
// X-Forwarded-Host or Host or Request.Host
hostvalues, ok := req.Request.Header["X-Forwarded-Host"] // apache specific?
if !ok || len(hostvalues) == 0 {
forwarded, ok := req.Request.Header["Host"] // without reverse-proxy
if !ok || len(forwarded) == 0 {
// fallback to Host field
host = req.Request.Host
} else {
host = forwarded[0]
}
} else {
host = hostvalues[0]
}
// inspect Referer for the scheme (http vs https)
scheme := "http"
if referer := req.Request.Header["Referer"]; len(referer) > 0 {
if strings.HasPrefix(referer[0], "https") {
scheme = "https"
}
}
(&decl).BasePath = fmt.Sprintf("%s://%s", scheme, host)
}
resp.WriteAsJson(decl)
}
// composeDeclaration uses all routes and parameters to create a ApiDeclaration
func (sws SwaggerService) composeDeclaration(ws *restful.WebService, pathPrefix string) ApiDeclaration {
decl := ApiDeclaration{
SwaggerVersion: swaggerVersion,
BasePath: sws.config.WebServicesUrl,
ResourcePath: pathPrefix,
Models: ModelList{},
ApiVersion: ws.Version()}
// collect any path parameters
rootParams := []Parameter{}
for _, param := range ws.PathParameters() {
rootParams = append(rootParams, asSwaggerParameter(param.Data()))
}
// aggregate by path
pathToRoutes := newOrderedRouteMap()
for _, other := range ws.Routes() {
if strings.HasPrefix(other.Path, pathPrefix) {
pathToRoutes.Add(other.Path, other)
}
}
pathToRoutes.Do(func(path string, routes []restful.Route) {
api := Api{Path: strings.TrimSuffix(path, "/"), Description: ws.Documentation()}
for _, route := range routes {
operation := Operation{
Method: route.Method,
Summary: route.Doc,
Notes: route.Notes,
Type: asDataType(route.WriteSample),
Parameters: []Parameter{},
Nickname: route.Operation,
ResponseMessages: composeResponseMessages(route, &decl)}
operation.Consumes = route.Consumes
operation.Produces = route.Produces
// share root params if any
for _, swparam := range rootParams {
operation.Parameters = append(operation.Parameters, swparam)
}
// route specific params
for _, param := range route.ParameterDocs {
operation.Parameters = append(operation.Parameters, asSwaggerParameter(param.Data()))
}
sws.addModelsFromRouteTo(&operation, route, &decl)
api.Operations = append(api.Operations, operation)
}
decl.Apis = append(decl.Apis, api)
})
return decl
}
// composeResponseMessages takes the ResponseErrors (if any) and creates ResponseMessages from them.
func composeResponseMessages(route restful.Route, decl *ApiDeclaration) (messages []ResponseMessage) {
if route.ResponseErrors == nil {
return messages
}
// sort by code
codes := sort.IntSlice{}
for code, _ := range route.ResponseErrors {
codes = append(codes, code)
}
codes.Sort()
for _, code := range codes {
each := route.ResponseErrors[code]
message := ResponseMessage{
Code: code,
Message: each.Message,
}
if each.Model != nil {
st := reflect.TypeOf(each.Model)
isCollection, st := detectCollectionType(st)
modelName := modelBuilder{}.keyFrom(st)
if isCollection {
modelName = "array[" + modelName + "]"
}
modelBuilder{&decl.Models}.addModel(st, "")
// reference the model
message.ResponseModel = modelName
}
messages = append(messages, message)
}
return
}
// addModelsFromRoute takes any read or write sample from the Route and creates a Swagger model from it.
func (sws SwaggerService) addModelsFromRouteTo(operation *Operation, route restful.Route, decl *ApiDeclaration) {
if route.ReadSample != nil {
sws.addModelFromSampleTo(operation, false, route.ReadSample, &decl.Models)
}
if route.WriteSample != nil {
sws.addModelFromSampleTo(operation, true, route.WriteSample, &decl.Models)
}
}
func detectCollectionType(st reflect.Type) (bool, reflect.Type) {
isCollection := false
if st.Kind() == reflect.Slice || st.Kind() == reflect.Array {
st = st.Elem()
isCollection = true
} else {
if st.Kind() == reflect.Ptr {
if st.Elem().Kind() == reflect.Slice || st.Elem().Kind() == reflect.Array {
st = st.Elem().Elem()
isCollection = true
}
}
}
return isCollection, st
}
// addModelFromSample creates and adds (or overwrites) a Model from a sample resource
func (sws SwaggerService) addModelFromSampleTo(operation *Operation, isResponse bool, sample interface{}, models *ModelList) {
st := reflect.TypeOf(sample)
isCollection, st := detectCollectionType(st)
modelName := modelBuilder{}.keyFrom(st)
if isResponse {
if isCollection {
modelName = "array[" + modelName + "]"
}
operation.Type = modelName
}
modelBuilder{models}.addModelFrom(sample)
}
func asSwaggerParameter(param restful.ParameterData) Parameter {
return Parameter{
DataTypeFields: DataTypeFields{
Type: &param.DataType,
Format: asFormat(param.DataType),
DefaultValue: Special(param.DefaultValue),
},
Name: param.Name,
Description: param.Description,
ParamType: asParamType(param.Kind),
Required: param.Required}
}
// Between 1..7 path parameters is supported
func composeRootPath(req *restful.Request) string {
path := "/" + req.PathParameter("a")
b := req.PathParameter("b")
if b == "" {
return path
}
path = path + "/" + b
c := req.PathParameter("c")
if c == "" {
return path
}
path = path + "/" + c
d := req.PathParameter("d")
if d == "" {
return path
}
path = path + "/" + d
e := req.PathParameter("e")
if e == "" {
return path
}
path = path + "/" + e
f := req.PathParameter("f")
if f == "" {
return path
}
path = path + "/" + f
g := req.PathParameter("g")
if g == "" {
return path
}
return path + "/" + g
}
func asFormat(name string) string {
return "" // TODO
}
func asParamType(kind int) string {
switch {
case kind == restful.PathParameterKind:
return "path"
case kind == restful.QueryParameterKind:
return "query"
case kind == restful.BodyParameterKind:
return "body"
case kind == restful.HeaderParameterKind:
return "header"
case kind == restful.FormParameterKind:
return "form"
}
return ""
}
func asDataType(any interface{}) string {
if any == nil {
return "void"
}
return reflect.TypeOf(any).Name()
}

263
vendor/github.com/emicklei/go-restful/web_service.go generated vendored Normal file
View file

@ -0,0 +1,263 @@
package restful
import (
"fmt"
"os"
"sync"
"github.com/emicklei/go-restful/log"
)
// Copyright 2013 Ernest Micklei. All rights reserved.
// Use of this source code is governed by a license
// that can be found in the LICENSE file.
// WebService holds a collection of Route values that bind a Http Method + URL Path to a function.
type WebService struct {
rootPath string
pathExpr *pathExpression // cached compilation of rootPath as RegExp
routes []Route
produces []string
consumes []string
pathParameters []*Parameter
filters []FilterFunction
documentation string
apiVersion string
dynamicRoutes bool
// protects 'routes' if dynamic routes are enabled
routesLock sync.RWMutex
}
func (w *WebService) SetDynamicRoutes(enable bool) {
w.dynamicRoutes = enable
}
// compilePathExpression ensures that the path is compiled into a RegEx for those routers that need it.
func (w *WebService) compilePathExpression() {
if len(w.rootPath) == 0 {
w.Path("/") // lazy initialize path
}
compiled, err := newPathExpression(w.rootPath)
if err != nil {
log.Printf("[restful] invalid path:%s because:%v", w.rootPath, err)
os.Exit(1)
}
w.pathExpr = compiled
}
// ApiVersion sets the API version for documentation purposes.
func (w *WebService) ApiVersion(apiVersion string) *WebService {
w.apiVersion = apiVersion
return w
}
// Version returns the API version for documentation purposes.
func (w WebService) Version() string { return w.apiVersion }
// Path specifies the root URL template path of the WebService.
// All Routes will be relative to this path.
func (w *WebService) Path(root string) *WebService {
w.rootPath = root
w.compilePathExpression()
return w
}
// Param adds a PathParameter to document parameters used in the root path.
func (w *WebService) Param(parameter *Parameter) *WebService {
if w.pathParameters == nil {
w.pathParameters = []*Parameter{}
}
w.pathParameters = append(w.pathParameters, parameter)
return w
}
// PathParameter creates a new Parameter of kind Path for documentation purposes.
// It is initialized as required with string as its DataType.
func (w *WebService) PathParameter(name, description string) *Parameter {
return PathParameter(name, description)
}
// PathParameter creates a new Parameter of kind Path for documentation purposes.
// It is initialized as required with string as its DataType.
func PathParameter(name, description string) *Parameter {
p := &Parameter{&ParameterData{Name: name, Description: description, Required: true, DataType: "string"}}
p.bePath()
return p
}
// QueryParameter creates a new Parameter of kind Query for documentation purposes.
// It is initialized as not required with string as its DataType.
func (w *WebService) QueryParameter(name, description string) *Parameter {
return QueryParameter(name, description)
}
// QueryParameter creates a new Parameter of kind Query for documentation purposes.
// It is initialized as not required with string as its DataType.
func QueryParameter(name, description string) *Parameter {
p := &Parameter{&ParameterData{Name: name, Description: description, Required: false, DataType: "string"}}
p.beQuery()
return p
}
// BodyParameter creates a new Parameter of kind Body for documentation purposes.
// It is initialized as required without a DataType.
func (w *WebService) BodyParameter(name, description string) *Parameter {
return BodyParameter(name, description)
}
// BodyParameter creates a new Parameter of kind Body for documentation purposes.
// It is initialized as required without a DataType.
func BodyParameter(name, description string) *Parameter {
p := &Parameter{&ParameterData{Name: name, Description: description, Required: true}}
p.beBody()
return p
}
// HeaderParameter creates a new Parameter of kind (Http) Header for documentation purposes.
// It is initialized as not required with string as its DataType.
func (w *WebService) HeaderParameter(name, description string) *Parameter {
return HeaderParameter(name, description)
}
// HeaderParameter creates a new Parameter of kind (Http) Header for documentation purposes.
// It is initialized as not required with string as its DataType.
func HeaderParameter(name, description string) *Parameter {
p := &Parameter{&ParameterData{Name: name, Description: description, Required: false, DataType: "string"}}
p.beHeader()
return p
}
// FormParameter creates a new Parameter of kind Form (using application/x-www-form-urlencoded) for documentation purposes.
// It is initialized as required with string as its DataType.
func (w *WebService) FormParameter(name, description string) *Parameter {
return FormParameter(name, description)
}
// FormParameter creates a new Parameter of kind Form (using application/x-www-form-urlencoded) for documentation purposes.
// It is initialized as required with string as its DataType.
func FormParameter(name, description string) *Parameter {
p := &Parameter{&ParameterData{Name: name, Description: description, Required: false, DataType: "string"}}
p.beForm()
return p
}
// Route creates a new Route using the RouteBuilder and add to the ordered list of Routes.
func (w *WebService) Route(builder *RouteBuilder) *WebService {
w.routesLock.Lock()
defer w.routesLock.Unlock()
builder.copyDefaults(w.produces, w.consumes)
w.routes = append(w.routes, builder.Build())
return w
}
// RemoveRoute removes the specified route, looks for something that matches 'path' and 'method'
func (w *WebService) RemoveRoute(path, method string) error {
if !w.dynamicRoutes {
return fmt.Errorf("dynamic routes are not enabled.")
}
w.routesLock.Lock()
defer w.routesLock.Unlock()
for ix := range w.routes {
if w.routes[ix].Method == method && w.routes[ix].Path == path {
w.routes = append(w.routes[:ix], w.routes[ix+1:]...)
}
}
return nil
}
// Method creates a new RouteBuilder and initialize its http method
func (w *WebService) Method(httpMethod string) *RouteBuilder {
return new(RouteBuilder).servicePath(w.rootPath).Method(httpMethod)
}
// Produces specifies that this WebService can produce one or more MIME types.
// Http requests must have one of these values set for the Accept header.
func (w *WebService) Produces(contentTypes ...string) *WebService {
w.produces = contentTypes
return w
}
// Consumes specifies that this WebService can consume one or more MIME types.
// Http requests must have one of these values set for the Content-Type header.
func (w *WebService) Consumes(accepts ...string) *WebService {
w.consumes = accepts
return w
}
// Routes returns the Routes associated with this WebService
func (w WebService) Routes() []Route {
if !w.dynamicRoutes {
return w.routes
}
// Make a copy of the array to prevent concurrency problems
w.routesLock.RLock()
defer w.routesLock.RUnlock()
result := make([]Route, len(w.routes))
for ix := range w.routes {
result[ix] = w.routes[ix]
}
return result
}
// RootPath returns the RootPath associated with this WebService. Default "/"
func (w WebService) RootPath() string {
return w.rootPath
}
// PathParameters return the path parameter names for (shared amoung its Routes)
func (w WebService) PathParameters() []*Parameter {
return w.pathParameters
}
// Filter adds a filter function to the chain of filters applicable to all its Routes
func (w *WebService) Filter(filter FilterFunction) *WebService {
w.filters = append(w.filters, filter)
return w
}
// Doc is used to set the documentation of this service.
func (w *WebService) Doc(plainText string) *WebService {
w.documentation = plainText
return w
}
// Documentation returns it.
func (w WebService) Documentation() string {
return w.documentation
}
/*
Convenience methods
*/
// HEAD is a shortcut for .Method("HEAD").Path(subPath)
func (w *WebService) HEAD(subPath string) *RouteBuilder {
return new(RouteBuilder).servicePath(w.rootPath).Method("HEAD").Path(subPath)
}
// GET is a shortcut for .Method("GET").Path(subPath)
func (w *WebService) GET(subPath string) *RouteBuilder {
return new(RouteBuilder).servicePath(w.rootPath).Method("GET").Path(subPath)
}
// POST is a shortcut for .Method("POST").Path(subPath)
func (w *WebService) POST(subPath string) *RouteBuilder {
return new(RouteBuilder).servicePath(w.rootPath).Method("POST").Path(subPath)
}
// PUT is a shortcut for .Method("PUT").Path(subPath)
func (w *WebService) PUT(subPath string) *RouteBuilder {
return new(RouteBuilder).servicePath(w.rootPath).Method("PUT").Path(subPath)
}
// PATCH is a shortcut for .Method("PATCH").Path(subPath)
func (w *WebService) PATCH(subPath string) *RouteBuilder {
return new(RouteBuilder).servicePath(w.rootPath).Method("PATCH").Path(subPath)
}
// DELETE is a shortcut for .Method("DELETE").Path(subPath)
func (w *WebService) DELETE(subPath string) *RouteBuilder {
return new(RouteBuilder).servicePath(w.rootPath).Method("DELETE").Path(subPath)
}

View file

@ -0,0 +1,39 @@
package restful
// Copyright 2013 Ernest Micklei. All rights reserved.
// Use of this source code is governed by a license
// that can be found in the LICENSE file.
import (
"net/http"
)
// DefaultContainer is a restful.Container that uses http.DefaultServeMux
var DefaultContainer *Container
func init() {
DefaultContainer = NewContainer()
DefaultContainer.ServeMux = http.DefaultServeMux
}
// If set the true then panics will not be caught to return HTTP 500.
// In that case, Route functions are responsible for handling any error situation.
// Default value is false = recover from panics. This has performance implications.
// OBSOLETE ; use restful.DefaultContainer.DoNotRecover(true)
var DoNotRecover = false
// Add registers a new WebService add it to the DefaultContainer.
func Add(service *WebService) {
DefaultContainer.Add(service)
}
// Filter appends a container FilterFunction from the DefaultContainer.
// These are called before dispatching a http.Request to a WebService.
func Filter(filter FilterFunction) {
DefaultContainer.Filter(filter)
}
// RegisteredWebServices returns the collections of WebServices from the DefaultContainer
func RegisteredWebServices() []*WebService {
return DefaultContainer.RegisteredWebServices()
}