Vendor main dependencies.

vendor/github.com/ArthurHlt/go-eureka-client/eureka/client.go

@@ -0,0 +1,357 @@
+package eureka
+
+import (
+	"crypto/tls"
+	"crypto/x509"
+	"encoding/json"
+	"errors"
+	"io"
+	"io/ioutil"
+	"net"
+	"net/http"
+	"net/url"
+	"os"
+	"path"
+	"time"
+	"strings"
+)
+
+const (
+	defaultBufferSize = 10
+	UP = "UP"
+	DOWN = "DOWN"
+	STARTING = "STARTING"
+)
+
+type Config struct {
+	CertFile    string        `json:"certFile"`
+	KeyFile     string        `json:"keyFile"`
+	CaCertFile  []string      `json:"caCertFiles"`
+	DialTimeout time.Duration `json:"timeout"`
+	Consistency string        `json:"consistency"`
+}
+
+type Client struct {
+	Config      Config   `json:"config"`
+	Cluster     *Cluster `json:"cluster"`
+	httpClient  *http.Client
+	persistence io.Writer
+	cURLch      chan string
+	// CheckRetry can be used to control the policy for failed requests
+	// and modify the cluster if needed.
+	// The client calls it before sending requests again, and
+	// stops retrying if CheckRetry returns some error. The cases that
+	// this function needs to handle include no response and unexpected
+	// http status code of response.
+	// If CheckRetry is nil, client will call the default one
+	// `DefaultCheckRetry`.
+	// Argument cluster is the eureka.Cluster object that these requests have been made on.
+	// Argument numReqs is the number of http.Requests that have been made so far.
+	// Argument lastResp is the http.Responses from the last request.
+	// Argument err is the reason of the failure.
+	CheckRetry  func(cluster *Cluster, numReqs int,
+	lastResp http.Response, err error) error
+}
+
+// NewClient create a basic client that is configured to be used
+// with the given machine list.
+func NewClient(machines []string) *Client {
+	config := Config{
+		// default timeout is one second
+		DialTimeout: time.Second,
+	}
+
+	client := &Client{
+		Cluster: NewCluster(machines),
+		Config:  config,
+	}
+
+	client.initHTTPClient()
+	return client
+}
+
+// NewTLSClient create a basic client with TLS configuration
+func NewTLSClient(machines []string, cert string, key string, caCerts []string) (*Client, error) {
+	// overwrite the default machine to use https
+	if len(machines) == 0 {
+		machines = []string{"https://127.0.0.1:4001"}
+	}
+
+	config := Config{
+		// default timeout is one second
+		DialTimeout: time.Second,
+		CertFile:    cert,
+		KeyFile:     key,
+		CaCertFile:  make([]string, 0),
+	}
+
+	client := &Client{
+		Cluster: NewCluster(machines),
+		Config:  config,
+	}
+
+	err := client.initHTTPSClient(cert, key)
+	if err != nil {
+		return nil, err
+	}
+
+	for _, caCert := range caCerts {
+		if err := client.AddRootCA(caCert); err != nil {
+			return nil, err
+		}
+	}
+	return client, nil
+}
+
+// NewClientFromFile creates a client from a given file path.
+// The given file is expected to use the JSON format.
+func NewClientFromFile(fpath string) (*Client, error) {
+	fi, err := os.Open(fpath)
+	if err != nil {
+		return nil, err
+	}
+
+	defer func() {
+		if err := fi.Close(); err != nil {
+			panic(err)
+		}
+	}()
+
+	return NewClientFromReader(fi)
+}
+
+// NewClientFromReader creates a Client configured from a given reader.
+// The configuration is expected to use the JSON format.
+func NewClientFromReader(reader io.Reader) (*Client, error) {
+	c := new(Client)
+
+	b, err := ioutil.ReadAll(reader)
+	if err != nil {
+		return nil, err
+	}
+
+	err = json.Unmarshal(b, c)
+	if err != nil {
+		return nil, err
+	}
+	if c.Config.CertFile == "" {
+		c.initHTTPClient()
+	} else {
+		err = c.initHTTPSClient(c.Config.CertFile, c.Config.KeyFile)
+	}
+
+	if err != nil {
+		return nil, err
+	}
+
+	for _, caCert := range c.Config.CaCertFile {
+		if err := c.AddRootCA(caCert); err != nil {
+			return nil, err
+		}
+	}
+
+	return c, nil
+}
+
+// Override the Client's HTTP Transport object
+func (c *Client) SetTransport(tr *http.Transport) {
+	c.httpClient.Transport = tr
+}
+
+// initHTTPClient initializes a HTTP client for eureka client
+func (c *Client) initHTTPClient() {
+	tr := &http.Transport{
+		Dial: c.dial,
+		TLSClientConfig: &tls.Config{
+			InsecureSkipVerify: true,
+		},
+	}
+	c.httpClient = &http.Client{Transport: tr}
+}
+
+// initHTTPClient initializes a HTTPS client for eureka client
+func (c *Client) initHTTPSClient(cert, key string) error {
+	if cert == "" || key == "" {
+		return errors.New("Require both cert and key path")
+	}
+
+	tlsCert, err := tls.LoadX509KeyPair(cert, key)
+	if err != nil {
+		return err
+	}
+
+	tlsConfig := &tls.Config{
+		Certificates:       []tls.Certificate{tlsCert},
+		InsecureSkipVerify: true,
+	}
+
+	tr := &http.Transport{
+		TLSClientConfig: tlsConfig,
+		Dial:            c.dial,
+	}
+
+	c.httpClient = &http.Client{Transport: tr}
+	return nil
+}
+
+// Sets the DialTimeout value
+func (c *Client) SetDialTimeout(d time.Duration) {
+	c.Config.DialTimeout = d
+}
+
+// AddRootCA adds a root CA cert for the eureka client
+func (c *Client) AddRootCA(caCert string) error {
+	if c.httpClient == nil {
+		return errors.New("Client has not been initialized yet!")
+	}
+
+	certBytes, err := ioutil.ReadFile(caCert)
+	if err != nil {
+		return err
+	}
+
+	tr, ok := c.httpClient.Transport.(*http.Transport)
+
+	if !ok {
+		panic("AddRootCA(): Transport type assert should not fail")
+	}
+
+	if tr.TLSClientConfig.RootCAs == nil {
+		caCertPool := x509.NewCertPool()
+		ok = caCertPool.AppendCertsFromPEM(certBytes)
+		if ok {
+			tr.TLSClientConfig.RootCAs = caCertPool
+		}
+		tr.TLSClientConfig.InsecureSkipVerify = false
+	} else {
+		ok = tr.TLSClientConfig.RootCAs.AppendCertsFromPEM(certBytes)
+	}
+
+	if !ok {
+		err = errors.New("Unable to load caCert")
+	}
+
+	c.Config.CaCertFile = append(c.Config.CaCertFile, caCert)
+	return err
+}
+
+// SetCluster updates cluster information using the given machine list.
+func (c *Client) SetCluster(machines []string) bool {
+	success := c.internalSyncCluster(machines)
+	return success
+}
+
+func (c *Client) GetCluster() []string {
+	return c.Cluster.Machines
+}
+
+// SyncCluster updates the cluster information using the internal machine list.
+func (c *Client) SyncCluster() bool {
+	return c.internalSyncCluster(c.Cluster.Machines)
+}
+
+// internalSyncCluster syncs cluster information using the given machine list.
+func (c *Client) internalSyncCluster(machines []string) bool {
+	for _, machine := range machines {
+		httpPath := c.createHttpPath(machine, "machines")
+		resp, err := c.httpClient.Get(httpPath)
+		if err != nil {
+			// try another machine in the cluster
+			continue
+		} else {
+			b, err := ioutil.ReadAll(resp.Body)
+			resp.Body.Close()
+			if err != nil {
+				// try another machine in the cluster
+				continue
+			}
+
+			// update Machines List
+			c.Cluster.updateFromStr(string(b))
+
+			// update leader
+			// the first one in the machine list is the leader
+			c.Cluster.switchLeader(0)
+
+			logger.Debug("sync.machines " + strings.Join(c.Cluster.Machines, ", "))
+			return true
+		}
+	}
+	return false
+}
+
+// createHttpPath creates a complete HTTP URL.
+// serverName should contain both the host name and a port number, if any.
+func (c *Client) createHttpPath(serverName string, _path string) string {
+	u, err := url.Parse(serverName)
+	if err != nil {
+		panic(err)
+	}
+
+	u.Path = path.Join(u.Path, _path)
+
+	if u.Scheme == "" {
+		u.Scheme = "http"
+	}
+	return u.String()
+}
+
+// dial attempts to open a TCP connection to the provided address, explicitly
+// enabling keep-alives with a one-second interval.
+func (c *Client) dial(network, addr string) (net.Conn, error) {
+	conn, err := net.DialTimeout(network, addr, c.Config.DialTimeout)
+	if err != nil {
+		return nil, err
+	}
+
+	tcpConn, ok := conn.(*net.TCPConn)
+	if !ok {
+		return nil, errors.New("Failed type-assertion of net.Conn as *net.TCPConn")
+	}
+
+	// Keep TCP alive to check whether or not the remote machine is down
+	if err = tcpConn.SetKeepAlive(true); err != nil {
+		return nil, err
+	}
+
+	if err = tcpConn.SetKeepAlivePeriod(time.Second); err != nil {
+		return nil, err
+	}
+
+	return tcpConn, nil
+}
+
+// MarshalJSON implements the Marshaller interface
+// as defined by the standard JSON package.
+func (c *Client) MarshalJSON() ([]byte, error) {
+	b, err := json.Marshal(struct {
+		Config  Config   `json:"config"`
+		Cluster *Cluster `json:"cluster"`
+	}{
+		Config:  c.Config,
+		Cluster: c.Cluster,
+	})
+
+	if err != nil {
+		return nil, err
+	}
+
+	return b, nil
+}
+
+// UnmarshalJSON implements the Unmarshaller interface
+// as defined by the standard JSON package.
+func (c *Client) UnmarshalJSON(b []byte) error {
+	temp := struct {
+		Config  Config   `json:"config"`
+		Cluster *Cluster `json:"cluster"`
+	}{}
+	err := json.Unmarshal(b, &temp)
+	if err != nil {
+		return err
+	}
+
+	c.Cluster = temp.Cluster
+	c.Config = temp.Config
+	return nil
+}

vendor/github.com/ArthurHlt/go-eureka-client/eureka/cluster.go

@@ -0,0 +1,51 @@
+package eureka
+
+import (
+	"net/url"
+	"strings"
+)
+
+type Cluster struct {
+	Leader   string   `json:"leader"`
+	Machines []string `json:"machines"`
+}
+
+func NewCluster(machines []string) *Cluster {
+	// if an empty slice was sent in then just assume HTTP 4001 on localhost
+	if len(machines) == 0 {
+		machines = []string{"http://127.0.0.1:4001"}
+	}
+
+	// default leader and machines
+	return &Cluster{
+		Leader:   machines[0],
+		Machines: machines,
+	}
+}
+
+// switchLeader switch the current leader to machines[num]
+func (cl *Cluster) switchLeader(num int) {
+	logger.Debug("switch.leader[from %v to %v]",
+		cl.Leader, cl.Machines[num])
+
+	cl.Leader = cl.Machines[num]
+}
+
+func (cl *Cluster) updateFromStr(machines string) {
+	cl.Machines = strings.Split(machines, ", ")
+}
+
+func (cl *Cluster) updateLeader(leader string) {
+	logger.Debug("update.leader[%s,%s]", cl.Leader, leader)
+	cl.Leader = leader
+}
+
+func (cl *Cluster) updateLeaderFromURL(u *url.URL) {
+	var leader string
+	if u.Scheme == "" {
+		leader = "http://" + u.Host
+	} else {
+		leader = u.Scheme + "://" + u.Host
+	}
+	cl.updateLeader(leader)
+}

vendor/github.com/ArthurHlt/go-eureka-client/eureka/debug.go

@@ -0,0 +1,21 @@
+package eureka
+
+import (
+	"github.com/ArthurHlt/gominlog"
+	"log"
+)
+
+var logger *gominlog.MinLog
+
+func GetLogger() *log.Logger {
+	return logger.GetLogger()
+}
+
+func SetLogger(loggerLog *log.Logger) {
+	logger.SetLogger(loggerLog)
+}
+
+func init() {
+	// Default logger uses the go default log.
+	logger = gominlog.NewClassicMinLogWithPackageName("go-eureka-client")
+}

vendor/github.com/ArthurHlt/go-eureka-client/eureka/delete.go

@@ -0,0 +1,10 @@
+package eureka
+
+import "strings"
+
+func (c *Client) UnregisterInstance(appId, instanceId string) error {
+	values := []string{"apps", appId, instanceId}
+	path := strings.Join(values, "/")
+	_, err := c.Delete(path)
+	return err
+}

vendor/github.com/ArthurHlt/go-eureka-client/eureka/error.go

@@ -0,0 +1,48 @@
+package eureka
+
+import (
+	"encoding/json"
+	"fmt"
+)
+
+const (
+	ErrCodeEurekaNotReachable = 501
+)
+
+var (
+	errorMap = map[int]string{
+		ErrCodeEurekaNotReachable: "All the given peers are not reachable",
+	}
+)
+
+type EurekaError struct {
+	ErrorCode int    `json:"errorCode"`
+	Message   string `json:"message"`
+	Cause     string `json:"cause,omitempty"`
+	Index     uint64 `json:"index"`
+}
+
+func (e EurekaError) Error() string {
+	return fmt.Sprintf("%v: %v (%v) [%v]", e.ErrorCode, e.Message, e.Cause, e.Index)
+}
+
+func newError(errorCode int, cause string, index uint64) *EurekaError {
+	return &EurekaError{
+		ErrorCode: errorCode,
+		Message:   errorMap[errorCode],
+		Cause:     cause,
+		Index:     index,
+	}
+}
+
+func handleError(b []byte) error {
+	eurekaErr := new(EurekaError)
+
+	err := json.Unmarshal(b, eurekaErr)
+	if err != nil {
+		logger.Warning("cannot unmarshal eureka error: %v", err)
+		return err
+	}
+
+	return eurekaErr
+}

vendor/github.com/ArthurHlt/go-eureka-client/eureka/get.go

@@ -0,0 +1,38 @@
+package eureka
+import (
+	"encoding/xml"
+	"strings"
+)
+
+func (c *Client) GetApplications() (*Applications, error) {
+	response, err := c.Get("apps");
+	if err != nil {
+		return nil, err
+	}
+	var applications *Applications = new(Applications)
+	err = xml.Unmarshal(response.Body, applications)
+	return applications, err
+}
+
+func (c *Client) GetApplication(appId string) (*Application, error) {
+	values := []string{"apps", appId}
+	path := strings.Join(values, "/")
+	response, err := c.Get(path);
+	if err != nil {
+		return nil, err
+	}
+	var application *Application = new(Application)
+	err = xml.Unmarshal(response.Body, application)
+	return application, err
+}
+func (c *Client) GetInstance(appId, instanceId string) (*InstanceInfo, error) {
+	values := []string{"apps", appId, instanceId}
+	path := strings.Join(values, "/")
+	response, err := c.Get(path);
+	if err != nil {
+		return nil, err
+	}
+	var instance *InstanceInfo = new(InstanceInfo)
+	err = xml.Unmarshal(response.Body, instance)
+	return instance, err
+}

vendor/github.com/ArthurHlt/go-eureka-client/eureka/metadata_marshaller.go

@@ -0,0 +1,95 @@
+package eureka
+
+import (
+	"encoding/xml"
+	"encoding/json"
+	"regexp"
+)
+
+type MetaData struct {
+	Map   map[string]string
+	Class string
+}
+
+
+type Vraw struct {
+	Content []byte `xml:",innerxml"`
+	Class   string `xml:"class,attr" json:"@class"`
+}
+
+func (s *MetaData) MarshalXML(e *xml.Encoder, start xml.StartElement) error {
+	var attributes []xml.Attr = make([]xml.Attr, 0)
+	if s.Class != "" {
+		attributes = append(attributes, xml.Attr{
+			Name: xml.Name{
+				Local: "class",
+			},
+			Value: s.Class,
+		})
+	}
+	start.Attr = attributes
+	tokens := []xml.Token{start}
+
+	for key, value := range s.Map {
+		t := xml.StartElement{Name: xml.Name{"", key}}
+		tokens = append(tokens, t, xml.CharData(value), xml.EndElement{t.Name})
+	}
+
+	tokens = append(tokens, xml.EndElement{
+		Name: start.Name,
+	})
+
+
+	for _, t := range tokens {
+		err := e.EncodeToken(t)
+		if err != nil {
+			return err
+		}
+	}
+
+	// flush to ensure tokens are written
+	err := e.Flush()
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (s *MetaData) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error {
+	s.Map = make(map[string]string)
+	vraw := &Vraw{}
+	d.DecodeElement(vraw, &start)
+	dataInString := string(vraw.Content)
+	regex, err := regexp.Compile("\\s*<([^<>]+)>([^<>]+)</[^<>]+>\\s*")
+	if err != nil {
+		return err
+	}
+	subMatches := regex.FindAllStringSubmatch(dataInString, -1)
+	for _, subMatch := range subMatches {
+		s.Map[subMatch[1]] = subMatch[2]
+	}
+	s.Class = vraw.Class
+	return nil
+}
+
+func (s *MetaData) MarshalJSON() ([]byte, error) {
+	mapIt := make(map[string]string)
+	for key, value := range s.Map {
+		mapIt[key] = value
+	}
+	if s.Class != "" {
+		mapIt["@class"] = s.Class
+	}
+	return json.Marshal(mapIt)
+}
+func (s *MetaData) UnmarshalJSON(data []byte) error {
+	dataUnmarshal := make(map[string]string)
+	err := json.Unmarshal(data, dataUnmarshal)
+	s.Map = dataUnmarshal
+	if val, ok := s.Map["@class"]; ok {
+		s.Class = val
+		delete(s.Map, "@class")
+	}
+	return err
+}

vendor/github.com/ArthurHlt/go-eureka-client/eureka/post.go

@@ -0,0 +1,21 @@
+package eureka
+
+import (
+	"encoding/json"
+	"strings"
+)
+
+func (c *Client) RegisterInstance(appId string, instanceInfo *InstanceInfo) error {
+	values := []string{"apps", appId}
+	path := strings.Join(values, "/")
+	instance := &Instance{
+		Instance: instanceInfo,
+	}
+	body, err := json.Marshal(instance)
+	if err != nil {
+		return err
+	}
+
+	_, err = c.Post(path, body)
+	return err
+}

vendor/github.com/ArthurHlt/go-eureka-client/eureka/put.go

@@ -0,0 +1,10 @@
+package eureka
+
+import "strings"
+
+func (c *Client) SendHeartbeat(appId, instanceId string) error {
+	values := []string{"apps", appId, instanceId}
+	path := strings.Join(values, "/")
+	_, err := c.Put(path, nil)
+	return err
+}

vendor/github.com/ArthurHlt/go-eureka-client/eureka/requests.go

@@ -0,0 +1,437 @@
+package eureka
+
+import (
+	"bytes"
+	"errors"
+	"fmt"
+	"io"
+	"io/ioutil"
+	"math/rand"
+	"net/http"
+	"net/url"
+	"sync"
+	"time"
+	"strconv"
+)
+
+// Errors introduced by handling requests
+var (
+	ErrRequestCancelled = errors.New("sending request is cancelled")
+)
+
+type RawRequest struct {
+	method       string
+	relativePath string
+	body         []byte
+	cancel       <-chan bool
+}
+type Applications struct {
+	VersionsDelta int           `xml:"versions__delta"`
+	AppsHashcode  string        `xml:"apps__hashcode"`
+	Applications  []Application `xml:"application,omitempty"`
+}
+type Application struct {
+	Name      string         `xml:"name"`
+	Instances []InstanceInfo `xml:"instance"`
+}
+type Instance struct {
+	Instance *InstanceInfo `xml:"instance" json:"instance"`
+}
+type Port struct {
+	Port    int  `xml:",chardata" json:"$"`
+	Enabled bool `xml:"enabled,attr" json:"@enabled"`
+}
+type InstanceInfo struct {
+	HostName                      string            `xml:"hostName" json:"hostName"`
+	HomePageUrl                   string            `xml:"homePageUrl,omitempty" json:"homePageUrl,omitempty"`
+	StatusPageUrl                 string            `xml:"statusPageUrl" json:"statusPageUrl"`
+	HealthCheckUrl                string            `xml:"healthCheckUrl,omitempty" json:"healthCheckUrl,omitempty"`
+	App                           string            `xml:"app" json:"app"`
+	IpAddr                        string            `xml:"ipAddr" json:"ipAddr"`
+	VipAddress                    string            `xml:"vipAddress" json:"vipAddress"`
+	secureVipAddress              string            `xml:"secureVipAddress,omitempty" json:"secureVipAddress,omitempty"`
+	Status                        string            `xml:"status" json:"status"`
+	Port                          *Port             `xml:"port,omitempty" json:"port,omitempty"`
+	SecurePort                    *Port             `xml:"securePort,omitempty" json:"securePort,omitempty"`
+	DataCenterInfo                *DataCenterInfo   `xml:"dataCenterInfo" json:"dataCenterInfo"`
+	LeaseInfo                     *LeaseInfo        `xml:"leaseInfo,omitempty" json:"leaseInfo,omitempty"`
+	Metadata                      *MetaData         `xml:"metadata,omitempty" json:"metadata,omitempty"`
+	IsCoordinatingDiscoveryServer bool              `xml:"isCoordinatingDiscoveryServer,omitempty" json:"isCoordinatingDiscoveryServer,omitempty"`
+	LastUpdatedTimestamp          int               `xml:"lastUpdatedTimestamp,omitempty" json:"lastUpdatedTimestamp,omitempty"`
+	LastDirtyTimestamp            int               `xml:"lastDirtyTimestamp,omitempty" json:"lastDirtyTimestamp,omitempty"`
+	ActionType                    string            `xml:"actionType,omitempty" json:"actionType,omitempty"`
+	Overriddenstatus              string            `xml:"overriddenstatus,omitempty" json:"overriddenstatus,omitempty"`
+	CountryId                     int               `xml:"countryId,omitempty" json:"countryId,omitempty"`
+
+}
+type DataCenterInfo struct {
+	Name     string             `xml:"name" json:"name"`
+	Class    string             `xml:"class,attr" json:"@class"`
+	Metadata DataCenterMetadata `xml:"metadata,omitempty" json:"metadata,omitempty"`
+}
+
+type DataCenterMetadata struct {
+	AmiLaunchIndex   string `xml:"ami-launch-index,omitempty" json:"ami-launch-index,omitempty"`
+	LocalHostname    string `xml:"local-hostname,omitempty" json:"local-hostname,omitempty"`
+	AvailabilityZone string `xml:"availability-zone,omitempty" json:"availability-zone,omitempty"`
+	InstanceId       string `xml:"instance-id,omitempty" json:"instance-id,omitempty"`
+	PublicIpv4       string `xml:"public-ipv4,omitempty" json:"public-ipv4,omitempty"`
+	PublicHostname   string `xml:"public-hostname,omitempty" json:"public-hostname,omitempty"`
+	AmiManifestPath  string `xml:"ami-manifest-path,omitempty" json:"ami-manifest-path,omitempty"`
+	LocalIpv4        string `xml:"local-ipv4,omitempty" json:"local-ipv4,omitempty"`
+	Hostname         string `xml:"hostname,omitempty" json:"hostname,omitempty"`
+	AmiId            string `xml:"ami-id,omitempty" json:"ami-id,omitempty"`
+	InstanceType     string `xml:"instance-type,omitempty" json:"instance-type,omitempty"`
+}
+
+type LeaseInfo struct {
+	EvictionDurationInSecs uint `xml:"evictionDurationInSecs,omitempty" json:"evictionDurationInSecs,omitempty"`
+	RenewalIntervalInSecs  int `xml:"renewalIntervalInSecs,omitempty" json:"renewalIntervalInSecs,omitempty"`
+	DurationInSecs         int `xml:"durationInSecs,omitempty" json:"durationInSecs,omitempty"`
+	RegistrationTimestamp  int `xml:"registrationTimestamp,omitempty" json:"registrationTimestamp,omitempty"`
+	LastRenewalTimestamp   int `xml:"lastRenewalTimestamp,omitempty" json:"lastRenewalTimestamp,omitempty"`
+	EvictionTimestamp      int `xml:"evictionTimestamp,omitempty" json:"evictionTimestamp,omitempty"`
+	ServiceUpTimestamp     int `xml:"serviceUpTimestamp,omitempty" json:"serviceUpTimestamp,omitempty"`
+}
+
+func NewRawRequest(method, relativePath string, body []byte, cancel <-chan bool) *RawRequest {
+	return &RawRequest{
+		method:       method,
+		relativePath: relativePath,
+		body:         body,
+		cancel:       cancel,
+	}
+}
+
+func NewInstanceInfo(hostName, app, ip string, port int, ttl uint, isSsl bool) *InstanceInfo {
+	dataCenterInfo := &DataCenterInfo{
+		Name: "MyOwn",
+	}
+	leaseInfo := &LeaseInfo{
+		EvictionDurationInSecs: ttl,
+	}
+	instanceInfo := &InstanceInfo{
+		HostName:       hostName,
+		App:            app,
+		IpAddr:         ip,
+		Status:         UP,
+		DataCenterInfo: dataCenterInfo,
+		LeaseInfo:      leaseInfo,
+		Metadata:       nil,
+	}
+	stringPort := ""
+	if (port != 80 && port != 443) {
+		stringPort = ":" + strconv.Itoa(port)
+	}
+	var protocol string = "http"
+	if (isSsl) {
+		protocol = "https"
+		instanceInfo.secureVipAddress = protocol + "://" + hostName + stringPort
+		instanceInfo.SecurePort = &Port{
+			Port: port,
+			Enabled: true,
+		}
+	}else {
+		instanceInfo.VipAddress = protocol + "://" + hostName + stringPort
+		instanceInfo.Port = &Port{
+			Port: port,
+			Enabled: true,
+		}
+	}
+	instanceInfo.StatusPageUrl = protocol + "://" + hostName + stringPort + "/info"
+	return instanceInfo
+}
+
+// getCancelable issues a cancelable GET request
+func (c *Client) getCancelable(endpoint string,
+cancel <-chan bool) (*RawResponse, error) {
+	logger.Debug("get %s [%s]", endpoint, c.Cluster.Leader)
+	p := endpoint
+
+	req := NewRawRequest("GET", p, nil, cancel)
+	resp, err := c.SendRequest(req)
+
+	if err != nil {
+		return nil, err
+	}
+
+	return resp, nil
+}
+
+// get issues a GET request
+func (c *Client) Get(endpoint string) (*RawResponse, error) {
+	return c.getCancelable(endpoint, nil)
+}
+
+// put issues a PUT request
+func (c *Client) Put(endpoint string, body []byte) (*RawResponse, error) {
+
+	logger.Debug("put %s, %s, [%s]", endpoint, body, c.Cluster.Leader)
+	p := endpoint
+
+	req := NewRawRequest("PUT", p, body, nil)
+	resp, err := c.SendRequest(req)
+
+	if err != nil {
+		return nil, err
+	}
+
+	return resp, nil
+}
+
+// post issues a POST request
+func (c *Client) Post(endpoint string, body []byte) (*RawResponse, error) {
+	logger.Debug("post %s, %s, [%s]", endpoint, body, c.Cluster.Leader)
+	p := endpoint
+
+	req := NewRawRequest("POST", p, body, nil)
+	resp, err := c.SendRequest(req)
+
+	if err != nil {
+		return nil, err
+	}
+
+	return resp, nil
+}
+
+// delete issues a DELETE request
+func (c *Client) Delete(endpoint string) (*RawResponse, error) {
+	logger.Debug("delete %s [%s]", endpoint, c.Cluster.Leader)
+	p := endpoint
+
+	req := NewRawRequest("DELETE", p, nil, nil)
+	resp, err := c.SendRequest(req)
+
+	if err != nil {
+		return nil, err
+	}
+
+	return resp, nil
+}
+
+func (c *Client) SendRequest(rr *RawRequest) (*RawResponse, error) {
+
+	var req *http.Request
+	var resp *http.Response
+	var httpPath string
+	var err error
+	var respBody []byte
+
+	var numReqs = 1
+
+	checkRetry := c.CheckRetry
+	if checkRetry == nil {
+		checkRetry = DefaultCheckRetry
+	}
+
+	cancelled := make(chan bool, 1)
+	reqLock := new(sync.Mutex)
+
+	if rr.cancel != nil {
+		cancelRoutine := make(chan bool)
+		defer close(cancelRoutine)
+
+		go func() {
+			select {
+			case <-rr.cancel:
+				cancelled <- true
+				logger.Debug("send.request is cancelled")
+			case <-cancelRoutine:
+				return
+			}
+
+			// Repeat canceling request until this thread is stopped
+			// because we have no idea about whether it succeeds.
+			for {
+				reqLock.Lock()
+				c.httpClient.Transport.(*http.Transport).CancelRequest(req)
+				reqLock.Unlock()
+
+				select {
+				case <-time.After(100 * time.Millisecond):
+				case <-cancelRoutine:
+					return
+				}
+			}
+		}()
+	}
+
+	// If we connect to a follower and consistency is required, retry until
+	// we connect to a leader
+	sleep := 25 * time.Millisecond
+	maxSleep := time.Second
+
+	for attempt := 0;; attempt++ {
+		if attempt > 0 {
+			select {
+			case <-cancelled:
+				return nil, ErrRequestCancelled
+			case <-time.After(sleep):
+				sleep = sleep * 2
+				if sleep > maxSleep {
+					sleep = maxSleep
+				}
+			}
+		}
+
+		logger.Debug("Connecting to eureka: attempt %d for %s", attempt + 1, rr.relativePath)
+
+		httpPath = c.getHttpPath(false, rr.relativePath)
+
+		logger.Debug("send.request.to %s | method %s", httpPath, rr.method)
+
+		req, err := func() (*http.Request, error) {
+			reqLock.Lock()
+			defer reqLock.Unlock()
+
+			if req, err = http.NewRequest(rr.method, httpPath, bytes.NewReader(rr.body)); err != nil {
+				return nil, err
+			}
+
+			req.Header.Set("Content-Type",
+				"application/json")
+			return req, nil
+		}()
+
+		if err != nil {
+			return nil, err
+		}
+
+		resp, err = c.httpClient.Do(req)
+		defer func() {
+			if resp != nil {
+				resp.Body.Close()
+			}
+		}()
+
+		// If the request was cancelled, return ErrRequestCancelled directly
+		select {
+		case <-cancelled:
+			return nil, ErrRequestCancelled
+		default:
+		}
+
+		numReqs++
+
+		// network error, change a machine!
+		if err != nil {
+			logger.Error("network error: %v", err.Error())
+			lastResp := http.Response{}
+			if checkErr := checkRetry(c.Cluster, numReqs, lastResp, err); checkErr != nil {
+				return nil, checkErr
+			}
+
+			c.Cluster.switchLeader(attempt % len(c.Cluster.Machines))
+			continue
+		}
+
+		// if there is no error, it should receive response
+		logger.Debug("recv.response.from "+httpPath)
+
+		if validHttpStatusCode[resp.StatusCode] {
+			// try to read byte code and break the loop
+			respBody, err = ioutil.ReadAll(resp.Body)
+			if err == nil {
+				logger.Debug("recv.success "+ httpPath)
+				break
+			}
+			// ReadAll error may be caused due to cancel request
+			select {
+			case <-cancelled:
+				return nil, ErrRequestCancelled
+			default:
+			}
+
+			if err == io.ErrUnexpectedEOF {
+				// underlying connection was closed prematurely, probably by timeout
+				// TODO: empty body or unexpectedEOF can cause http.Transport to get hosed;
+				// this allows the client to detect that and take evasive action. Need
+				// to revisit once code.google.com/p/go/issues/detail?id=8648 gets fixed.
+				respBody = []byte{}
+				break
+			}
+		}
+
+		// if resp is TemporaryRedirect, set the new leader and retry
+		if resp.StatusCode == http.StatusTemporaryRedirect {
+			u, err := resp.Location()
+
+			if err != nil {
+				logger.Warning("%v", err)
+			} else {
+				// Update cluster leader based on redirect location
+				// because it should point to the leader address
+				c.Cluster.updateLeaderFromURL(u)
+				logger.Debug("recv.response.relocate "+ u.String())
+			}
+			resp.Body.Close()
+			continue
+		}
+
+		if checkErr := checkRetry(c.Cluster, numReqs, *resp,
+			errors.New("Unexpected HTTP status code")); checkErr != nil {
+			return nil, checkErr
+		}
+		resp.Body.Close()
+	}
+
+	r := &RawResponse{
+		StatusCode: resp.StatusCode,
+		Body:       respBody,
+		Header:     resp.Header,
+	}
+
+	return r, nil
+}
+
+// DefaultCheckRetry defines the retrying behaviour for bad HTTP requests
+// If we have retried 2 * machine number, stop retrying.
+// If status code is InternalServerError, sleep for 200ms.
+func DefaultCheckRetry(cluster *Cluster, numReqs int, lastResp http.Response,
+err error) error {
+
+	if numReqs >= 2 * len(cluster.Machines) {
+		return newError(ErrCodeEurekaNotReachable,
+			"Tried to connect to each peer twice and failed", 0)
+	}
+
+	code := lastResp.StatusCode
+	if code == http.StatusInternalServerError {
+		time.Sleep(time.Millisecond * 200)
+
+	}
+
+	logger.Warning("bad response status code %d", code)
+	return nil
+}
+
+func (c *Client) getHttpPath(random bool, s ...string) string {
+	var machine string
+	if random {
+		machine = c.Cluster.Machines[rand.Intn(len(c.Cluster.Machines))]
+	} else {
+		machine = c.Cluster.Leader
+	}
+
+	fullPath := machine
+	for _, seg := range s {
+		fullPath += "/" + seg
+	}
+
+	return fullPath
+}
+
+// buildValues builds a url.Values map according to the given value and ttl
+func buildValues(value string, ttl uint64) url.Values {
+	v := url.Values{}
+
+	if value != "" {
+		v.Set("value", value)
+	}
+
+	if ttl > 0 {
+		v.Set("ttl", fmt.Sprintf("%v", ttl))
+	}
+
+	return v
+}

vendor/github.com/ArthurHlt/go-eureka-client/eureka/response.go

@@ -0,0 +1,21 @@
+package eureka
+
+import "net/http"
+
+type RawResponse struct {
+	StatusCode int
+	Body       []byte
+	Header     http.Header
+}
+
+var (
+	validHttpStatusCode = map[int]bool{
+		http.StatusNoContent:          true,
+		http.StatusCreated:            true,
+		http.StatusOK:                 true,
+		http.StatusBadRequest:         true,
+		http.StatusNotFound:           true,
+		http.StatusPreconditionFailed: true,
+		http.StatusForbidden:          true,
+	}
+)

vendor/github.com/ArthurHlt/go-eureka-client/eureka/version.go

@@ -0,0 +1,3 @@
+package eureka
+
+const version = "v2"