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/*
The remote package provides the pieces to allow Ginkgo test suites to report to remote listeners.
This is used, primarily, to enable streaming parallel test output but has, in principal, broader applications (e.g. streaming test output to a browser).
*/
package remote
import (
"encoding/json"
"io/ioutil"
"net"
"net/http"
"sync"
"github.com/onsi/ginkgo/internal/spec_iterator"
"github.com/onsi/ginkgo/config"
"github.com/onsi/ginkgo/reporters"
"github.com/onsi/ginkgo/types"
)
/*
Server spins up on an automatically selected port and listens for communication from the forwarding reporter.
It then forwards that communication to attached reporters.
*/
type Server struct {
listener net.Listener
reporters []reporters.Reporter
alives []func() bool
lock *sync.Mutex
beforeSuiteData types.RemoteBeforeSuiteData
parallelTotal int
counter int
}
//Create a new server, automatically selecting a port
func NewServer(parallelTotal int) (*Server, error) {
listener, err := net.Listen("tcp", "127.0.0.1:0")
if err != nil {
return nil, err
}
return &Server{
listener: listener,
lock: &sync.Mutex{},
alives: make([]func() bool, parallelTotal),
beforeSuiteData: types.RemoteBeforeSuiteData{Data: nil, State: types.RemoteBeforeSuiteStatePending},
parallelTotal: parallelTotal,
}, nil
}
//Start the server. You don't need to `go s.Start()`, just `s.Start()`
func (server *Server) Start() {
httpServer := &http.Server{}
mux := http.NewServeMux()
httpServer.Handler = mux
//streaming endpoints
mux.HandleFunc("/SpecSuiteWillBegin", server.specSuiteWillBegin)
mux.HandleFunc("/BeforeSuiteDidRun", server.beforeSuiteDidRun)
mux.HandleFunc("/AfterSuiteDidRun", server.afterSuiteDidRun)
mux.HandleFunc("/SpecWillRun", server.specWillRun)
mux.HandleFunc("/SpecDidComplete", server.specDidComplete)
mux.HandleFunc("/SpecSuiteDidEnd", server.specSuiteDidEnd)
//synchronization endpoints
mux.HandleFunc("/BeforeSuiteState", server.handleBeforeSuiteState)
mux.HandleFunc("/RemoteAfterSuiteData", server.handleRemoteAfterSuiteData)
mux.HandleFunc("/counter", server.handleCounter)
mux.HandleFunc("/has-counter", server.handleHasCounter) //for backward compatibility
go httpServer.Serve(server.listener)
}
//Stop the server
func (server *Server) Close() {
server.listener.Close()
}
//The address the server can be reached it. Pass this into the `ForwardingReporter`.
func (server *Server) Address() string {
return "http://" + server.listener.Addr().String()
}
//
// Streaming Endpoints
//
//The server will forward all received messages to Ginkgo reporters registered with `RegisterReporters`
func (server *Server) readAll(request *http.Request) []byte {
defer request.Body.Close()
body, _ := ioutil.ReadAll(request.Body)
return body
}
func (server *Server) RegisterReporters(reporters ...reporters.Reporter) {
server.reporters = reporters
}
func (server *Server) specSuiteWillBegin(writer http.ResponseWriter, request *http.Request) {
body := server.readAll(request)
var data struct {
Config config.GinkgoConfigType `json:"config"`
Summary *types.SuiteSummary `json:"suite-summary"`
}
json.Unmarshal(body, &data)
for _, reporter := range server.reporters {
reporter.SpecSuiteWillBegin(data.Config, data.Summary)
}
}
func (server *Server) beforeSuiteDidRun(writer http.ResponseWriter, request *http.Request) {
body := server.readAll(request)
var setupSummary *types.SetupSummary
json.Unmarshal(body, &setupSummary)
for _, reporter := range server.reporters {
reporter.BeforeSuiteDidRun(setupSummary)
}
}
func (server *Server) afterSuiteDidRun(writer http.ResponseWriter, request *http.Request) {
body := server.readAll(request)
var setupSummary *types.SetupSummary
json.Unmarshal(body, &setupSummary)
for _, reporter := range server.reporters {
reporter.AfterSuiteDidRun(setupSummary)
}
}
func (server *Server) specWillRun(writer http.ResponseWriter, request *http.Request) {
body := server.readAll(request)
var specSummary *types.SpecSummary
json.Unmarshal(body, &specSummary)
for _, reporter := range server.reporters {
reporter.SpecWillRun(specSummary)
}
}
func (server *Server) specDidComplete(writer http.ResponseWriter, request *http.Request) {
body := server.readAll(request)
var specSummary *types.SpecSummary
json.Unmarshal(body, &specSummary)
for _, reporter := range server.reporters {
reporter.SpecDidComplete(specSummary)
}
}
func (server *Server) specSuiteDidEnd(writer http.ResponseWriter, request *http.Request) {
body := server.readAll(request)
var suiteSummary *types.SuiteSummary
json.Unmarshal(body, &suiteSummary)
for _, reporter := range server.reporters {
reporter.SpecSuiteDidEnd(suiteSummary)
}
}
//
// Synchronization Endpoints
//
func (server *Server) RegisterAlive(node int, alive func() bool) {
server.lock.Lock()
defer server.lock.Unlock()
server.alives[node-1] = alive
}
func (server *Server) nodeIsAlive(node int) bool {
server.lock.Lock()
defer server.lock.Unlock()
alive := server.alives[node-1]
if alive == nil {
return true
}
return alive()
}
func (server *Server) handleBeforeSuiteState(writer http.ResponseWriter, request *http.Request) {
if request.Method == "POST" {
dec := json.NewDecoder(request.Body)
dec.Decode(&(server.beforeSuiteData))
} else {
beforeSuiteData := server.beforeSuiteData
if beforeSuiteData.State == types.RemoteBeforeSuiteStatePending && !server.nodeIsAlive(1) {
beforeSuiteData.State = types.RemoteBeforeSuiteStateDisappeared
}
enc := json.NewEncoder(writer)
enc.Encode(beforeSuiteData)
}
}
func (server *Server) handleRemoteAfterSuiteData(writer http.ResponseWriter, request *http.Request) {
afterSuiteData := types.RemoteAfterSuiteData{
CanRun: true,
}
for i := 2; i <= server.parallelTotal; i++ {
afterSuiteData.CanRun = afterSuiteData.CanRun && !server.nodeIsAlive(i)
}
enc := json.NewEncoder(writer)
enc.Encode(afterSuiteData)
}
func (server *Server) handleCounter(writer http.ResponseWriter, request *http.Request) {
c := spec_iterator.Counter{}
server.lock.Lock()
c.Index = server.counter
server.counter++
server.lock.Unlock()
json.NewEncoder(writer).Encode(c)
}
func (server *Server) handleHasCounter(writer http.ResponseWriter, request *http.Request) {
writer.Write([]byte(""))
}
|
