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Vendor main dependencies.

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Timo Reimann 2017-02-07 22:33:23 +01:00
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vendor/github.com/vulcand/vulcand/conntracker/conntracker.go generated vendored Normal file
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package conntracker
import (
"net"
"net/http"
)
type ConnectionTracker interface {
RegisterStateChange(conn net.Conn, prev http.ConnState, cur http.ConnState)
Counts() ConnectionStats
}
type ConnectionStats map[http.ConnState]map[string]int64

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vendor/github.com/vulcand/vulcand/main.go generated vendored Normal file
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package main
import (
"fmt"
"os"
"runtime"
"github.com/vulcand/vulcand/plugin/registry"
"github.com/vulcand/vulcand/service"
)
func main() {
runtime.GOMAXPROCS(runtime.NumCPU())
if err := service.Run(registry.GetRegistry()); err != nil {
fmt.Printf("Service exited with error: %s\n", err)
os.Exit(255)
} else {
fmt.Println("Service exited gracefully")
}
}

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vendor/github.com/vulcand/vulcand/plugin/middleware.go generated vendored Normal file
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package plugin
import (
"encoding/json"
"fmt"
"github.com/codegangsta/cli"
"github.com/vulcand/route"
"github.com/vulcand/vulcand/conntracker"
"github.com/vulcand/vulcand/router"
"net/http"
"reflect"
)
// Middleware specification, used to construct new middlewares and plug them into CLI API and backends
type MiddlewareSpec struct {
Type string
// Reader function that returns a middleware from another middleware structure
FromOther interface{}
// Flags for CLI tool to generate interface
CliFlags []cli.Flag
// Function that construtcs a middleware from CLI parameters
FromCli CliReader
}
func (ms *MiddlewareSpec) FromJSON(data []byte) (Middleware, error) {
// Get a function's type
fnType := reflect.TypeOf(ms.FromOther)
// Create a pointer to the function's first argument
ptr := reflect.New(fnType.In(0)).Interface()
err := json.Unmarshal(data, &ptr)
if err != nil {
return nil, fmt.Errorf("failed to decode %T from JSON, error: %s", ptr, err)
}
// Now let's call the function to produce a middleware
fnVal := reflect.ValueOf(ms.FromOther)
results := fnVal.Call([]reflect.Value{reflect.ValueOf(ptr).Elem()})
m, out := results[0].Interface(), results[1].Interface()
if out != nil {
return nil, out.(error)
}
return m.(Middleware), nil
}
type Middleware interface {
NewHandler(http.Handler) (http.Handler, error)
}
// Reader constructs the middleware from the CLI interface
type CliReader func(c *cli.Context) (Middleware, error)
// Function that returns middleware spec by it's type
type SpecGetter func(string) *MiddlewareSpec
// Registry contains currently registered middlewares and used to support pluggable middlewares across all modules of the vulcand
type Registry struct {
specs []*MiddlewareSpec
notFound Middleware
router router.Router
connTracker conntracker.ConnectionTracker
}
func NewRegistry() *Registry {
return &Registry{
specs: []*MiddlewareSpec{},
router: route.NewMux(),
}
}
func (r *Registry) AddSpec(s *MiddlewareSpec) error {
if s == nil {
return fmt.Errorf("spec can not be nil")
}
if r.GetSpec(s.Type) != nil {
return fmt.Errorf("middleware of type %s already registered", s.Type)
}
if err := verifySignature(s.FromOther); err != nil {
return err
}
r.specs = append(r.specs, s)
return nil
}
func (r *Registry) GetSpec(middlewareType string) *MiddlewareSpec {
for _, s := range r.specs {
if s.Type == middlewareType {
return s
}
}
return nil
}
func (r *Registry) GetSpecs() []*MiddlewareSpec {
return r.specs
}
func (r *Registry) AddNotFoundMiddleware(notFound Middleware) error {
r.notFound = notFound
return nil
}
func (r *Registry) GetNotFoundMiddleware() Middleware {
return r.notFound
}
func (r *Registry) SetRouter(router router.Router) error {
r.router = router
return nil
}
func (r *Registry) GetRouter() router.Router {
return r.router
}
func (r *Registry) SetConnectionTracker(connTracker conntracker.ConnectionTracker) error {
r.connTracker = connTracker
return nil
}
func (r *Registry) GetConnectionTracker() conntracker.ConnectionTracker {
return r.connTracker
}
func verifySignature(fn interface{}) error {
t := reflect.TypeOf(fn)
if t == nil || t.Kind() != reflect.Func {
return fmt.Errorf("expected function, got %s", t)
}
if t.NumIn() != 1 {
return fmt.Errorf("expected function with one input argument, got %d", t.NumIn())
}
if t.In(0).Kind() != reflect.Struct {
return fmt.Errorf("function argument should be struct, got %s", t.In(0).Kind())
}
if t.NumOut() != 2 {
return fmt.Errorf("function should return 2 values, got %d", t.NumOut())
}
if !t.Out(0).AssignableTo(reflect.TypeOf((*Middleware)(nil)).Elem()) {
return fmt.Errorf("function first return value should be Middleware got, %s", t.Out(0))
}
if !t.Out(1).AssignableTo(reflect.TypeOf((*error)(nil)).Elem()) {
return fmt.Errorf("function second return value should be error got, %s", t.Out(1))
}
return nil
}

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vendor/github.com/vulcand/vulcand/plugin/rewrite/rewrite.go generated vendored Normal file
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package rewrite
import (
"bytes"
"fmt"
"io"
"net/http"
"net/url"
"regexp"
"strconv"
"strings"
log "github.com/Sirupsen/logrus"
"github.com/codegangsta/cli"
"github.com/vulcand/oxy/utils"
"github.com/vulcand/vulcand/plugin"
)
const Type = "rewrite"
type Rewrite struct {
Regexp string
Replacement string
RewriteBody bool
Redirect bool
}
func NewRewrite(regex, replacement string, rewriteBody, redirect bool) (*Rewrite, error) {
return &Rewrite{regex, replacement, rewriteBody, redirect}, nil
}
func (rw *Rewrite) NewHandler(next http.Handler) (http.Handler, error) {
return newRewriteHandler(next, rw)
}
func (rw *Rewrite) String() string {
return fmt.Sprintf("regexp=%v, replacement=%v, rewriteBody=%v, redirect=%v",
rw.Regexp, rw.Replacement, rw.RewriteBody, rw.Redirect)
}
type rewriteHandler struct {
next http.Handler
errHandler utils.ErrorHandler
regexp *regexp.Regexp
replacement string
rewriteBody bool
redirect bool
}
func newRewriteHandler(next http.Handler, spec *Rewrite) (*rewriteHandler, error) {
re, err := regexp.Compile(spec.Regexp)
if err != nil {
return nil, err
}
return &rewriteHandler{
regexp: re,
replacement: spec.Replacement,
rewriteBody: spec.RewriteBody,
redirect: spec.Redirect,
next: next,
errHandler: utils.DefaultHandler,
}, nil
}
func (rw *rewriteHandler) ServeHTTP(w http.ResponseWriter, req *http.Request) {
oldURL := rawURL(req)
// only continue if the Regexp param matches the URL
if !rw.regexp.MatchString(oldURL) {
rw.next.ServeHTTP(w, req)
return
}
// apply a rewrite regexp to the URL
newURL := rw.regexp.ReplaceAllString(oldURL, rw.replacement)
// replace any variables that may be in there
rewrittenURL := &bytes.Buffer{}
if err := ApplyString(newURL, rewrittenURL, req); err != nil {
rw.errHandler.ServeHTTP(w, req, err)
return
}
// parse the rewritten URL and replace request URL with it
parsedURL, err := url.Parse(rewrittenURL.String())
if err != nil {
rw.errHandler.ServeHTTP(w, req, err)
return
}
if rw.redirect && newURL != oldURL {
(&redirectHandler{u: parsedURL}).ServeHTTP(w, req)
return
}
req.URL = parsedURL
// make sure the request URI corresponds the rewritten URL
req.RequestURI = req.URL.RequestURI()
if !rw.rewriteBody {
rw.next.ServeHTTP(w, req)
return
}
bw := &bufferWriter{header: make(http.Header), buffer: &bytes.Buffer{}}
newBody := &bytes.Buffer{}
rw.next.ServeHTTP(bw, req)
if err := Apply(bw.buffer, newBody, req); err != nil {
log.Errorf("Failed to rewrite response body: %v", err)
return
}
utils.CopyHeaders(w.Header(), bw.Header())
w.Header().Set("Content-Length", strconv.Itoa(newBody.Len()))
w.WriteHeader(bw.code)
io.Copy(w, newBody)
}
func FromOther(rw Rewrite) (plugin.Middleware, error) {
return NewRewrite(rw.Regexp, rw.Replacement, rw.RewriteBody, rw.Redirect)
}
func FromCli(c *cli.Context) (plugin.Middleware, error) {
return NewRewrite(c.String("regexp"), c.String("replacement"), c.Bool("rewriteBody"), c.Bool("redirect"))
}
func GetSpec() *plugin.MiddlewareSpec {
return &plugin.MiddlewareSpec{
Type: Type,
FromOther: FromOther,
FromCli: FromCli,
CliFlags: CliFlags(),
}
}
func CliFlags() []cli.Flag {
return []cli.Flag{
cli.StringFlag{
Name: "regexp",
Usage: "regex to match against http request path",
},
cli.StringFlag{
Name: "replacement",
Usage: "replacement text into which regex expansions are inserted",
},
cli.BoolFlag{
Name: "rewriteBody",
Usage: "if provided, response body is treated as as template and all variables in it are replaced",
},
cli.BoolFlag{
Name: "redirect",
Usage: "if provided, request is redirected to the rewritten URL",
},
}
}
func rawURL(request *http.Request) string {
scheme := "http"
if request.TLS != nil || isXForwardedHTTPS(request) {
scheme = "https"
}
return strings.Join([]string{scheme, "://", request.Host, request.RequestURI}, "")
}
func isXForwardedHTTPS(request *http.Request) bool {
xForwardedProto := request.Header.Get("X-Forwarded-Proto")
return len(xForwardedProto) > 0 && xForwardedProto == "https"
}
type redirectHandler struct {
u *url.URL
}
func (f *redirectHandler) ServeHTTP(w http.ResponseWriter, req *http.Request) {
w.Header().Set("Location", f.u.String())
w.WriteHeader(http.StatusFound)
w.Write([]byte(http.StatusText(http.StatusFound)))
}
type bufferWriter struct {
header http.Header
code int
buffer *bytes.Buffer
}
func (b *bufferWriter) Close() error {
return nil
}
func (b *bufferWriter) Header() http.Header {
return b.header
}
func (b *bufferWriter) Write(buf []byte) (int, error) {
return b.buffer.Write(buf)
}
// WriteHeader sets rw.Code.
func (b *bufferWriter) WriteHeader(code int) {
b.code = code
}

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vendor/github.com/vulcand/vulcand/plugin/rewrite/template.go generated vendored Normal file
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package rewrite
import (
"io"
"io/ioutil"
"net/http"
"text/template"
)
// data represents template data that is available to use in templates.
type data struct {
Request *http.Request
}
// Apply reads a template string from the provided reader, applies variables
// from the provided request object to it and writes the result into
// the provided writer.
//
// Template is standard Go's http://golang.org/pkg/text/template/.
func Apply(in io.Reader, out io.Writer, request *http.Request) error {
body, err := ioutil.ReadAll(in)
if err != nil {
return err
}
return ApplyString(string(body), out, request)
}
// ApplyString applies variables from the provided request object to the provided
// template string and writes the result into the provided writer.
//
// Template is standard Go's http://golang.org/pkg/text/template/.
func ApplyString(in string, out io.Writer, request *http.Request) error {
t, err := template.New("t").Parse(in)
if err != nil {
return err
}
if err = t.Execute(out, data{request}); err != nil {
return err
}
return nil
}

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vendor/github.com/vulcand/vulcand/router/router.go generated vendored Normal file
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package router
import "net/http"
//This interface captures all routing functionality required by vulcan.
//The routing functionality mainly comes from "github.com/vulcand/route",
type Router interface {
//Sets the not-found handler (this handler is called when no other handlers/routes in the routing library match
SetNotFound(http.Handler) error
//Gets the not-found handler that is currently in use by this router.
GetNotFound() http.Handler
//Validates whether this is an acceptable route expression
IsValid(string) bool
//Adds a new route->handler combination. The route is a string which provides the routing expression. http.Handler is called when this expression matches a request.
Handle(string, http.Handler) error
//Removes a route. The http.Handler associated with it, will be discarded.
Remove(string) error
//ServiceHTTP is the http.Handler implementation that allows callers to route their calls to sub-http.Handlers based on route matches.
ServeHTTP(http.ResponseWriter, *http.Request)
}