Sanket SudakeandGitHub
8442e21621
* Defining httpserver package to capture httpserver shutdown and introduces uniform running of http server across codebase. * Add unit tests for httpserver Signed-off-by: Sanket Sudake <sanketsudake@gmail.com>
111 lines
2.7 KiB
Go
111 lines
2.7 KiB
Go
/*
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Copyright 2016 The Fission Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package router
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import (
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"context"
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"log"
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"net/http"
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"testing"
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"time"
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"github.com/gorilla/mux"
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"go.uber.org/zap"
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"go.uber.org/zap/zapcore"
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"github.com/fission/fission/pkg/utils/httpserver"
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"github.com/fission/fission/pkg/utils/metrics"
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)
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func OldHandler(responseWriter http.ResponseWriter, request *http.Request) {
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_, err := responseWriter.Write([]byte("old handler"))
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if err != nil {
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log.Fatal(err)
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}
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}
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func NewHandler(responseWriter http.ResponseWriter, request *http.Request) {
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_, err := responseWriter.Write([]byte("new handler"))
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if err != nil {
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log.Fatal(err)
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}
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}
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func verifyRequest(expectedResponse string) {
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targetURL := "http://localhost:3333"
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testRequest(targetURL, expectedResponse)
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}
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func spamServer(quit chan bool) {
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i := 0
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for {
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select {
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case <-quit:
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return
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default:
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i = i + 1
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resp, err := http.Get("http://localhost:3333")
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if err != nil {
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log.Panicf("failed to make get request %v: %v", i, err)
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}
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resp.Body.Close()
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}
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}
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}
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func TestMutableMux(t *testing.T) {
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// make a simple mutable router
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log.Print("Create mutable router")
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muxRouter := mux.NewRouter()
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muxRouter.Use(metrics.HTTPMetricMiddleware())
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muxRouter.HandleFunc("/", OldHandler)
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config := zap.NewDevelopmentConfig()
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config.EncoderConfig.EncodeTime = zapcore.ISO8601TimeEncoder
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logger, err := config.Build()
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panicIf(err)
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mr := newMutableRouter(logger, muxRouter)
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ctx, cancel := context.WithCancel(context.Background())
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defer cancel()
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// start http server
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go httpserver.StartServer(ctx, logger, "router", "3333", mr)
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// continuously make requests, panic if any fails
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time.Sleep(100 * time.Millisecond)
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q := make(chan bool)
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go spamServer(q)
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time.Sleep(5 * time.Millisecond)
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// connect and verify old handler
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log.Print("Verify old handler")
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verifyRequest("old handler")
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// change the muxer
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log.Print("Change mux router")
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newMuxRouter := mux.NewRouter()
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newMuxRouter.Use(metrics.HTTPMetricMiddleware())
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newMuxRouter.HandleFunc("/", NewHandler)
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mr.updateRouter(newMuxRouter)
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// connect and verify the new handler
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log.Print("Verify new handler")
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verifyRequest("new handler")
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q <- true
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time.Sleep(100 * time.Millisecond)
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}
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