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http_server.go
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/
http_server.go
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package main
import (
"encoding/json"
"fmt"
"net/http"
"net/http/pprof"
"time"
)
type httpServerCtx struct {
httpServer *http.Server
indexConfig *indexClient
shutdown bool
started time.Time
}
func (ctx *httpServerCtx) buildServer() {
mux := http.NewServeMux()
mux.HandleFunc("/started", func(w http.ResponseWriter, _ *http.Request) {
w.WriteHeader(200)
data := time.Since(ctx.started).String()
w.Write([]byte(data))
})
mux.HandleFunc("/health", func(w http.ResponseWriter, _ *http.Request) {
w.WriteHeader(200)
w.Write([]byte("ok"))
})
if ctx.indexConfig.config.Stats {
mux.HandleFunc("/stats", func(w http.ResponseWriter, _ *http.Request) {
stats, err := json.MarshalIndent(ctx.indexConfig.stats, "", " ")
if err == nil {
w.Header().Set("Content-Type", "application/json")
w.WriteHeader(200)
w.Write(stats)
fmt.Fprintln(w)
} else {
w.WriteHeader(500)
fmt.Fprintf(w, "Unable to print statistics: %s", err)
}
})
}
if ctx.indexConfig.config.Pprof {
mux.HandleFunc("/debug/pprof/", pprof.Index)
mux.HandleFunc("/debug/pprof/cmdline", pprof.Cmdline)
mux.HandleFunc("/debug/pprof/profile", pprof.Profile)
mux.HandleFunc("/debug/pprof/symbol", pprof.Symbol)
mux.HandleFunc("/debug/pprof/trace", pprof.Trace)
}
s := &http.Server{
Addr: ctx.indexConfig.config.HTTPServerAddr,
Handler: mux,
ErrorLog: ctx.indexConfig.config.ErrorLogger,
}
ctx.httpServer = s
}
func (ctx *httpServerCtx) serveHTTP() {
s := ctx.httpServer
if ctx.indexConfig.config.Verbose {
ctx.indexConfig.config.InfoLogger.Printf("Starting http server at %s", s.Addr)
}
ctx.started = time.Now()
err := s.ListenAndServe()
if !ctx.shutdown {
ctx.indexConfig.config.ErrorLogger.Fatalf("Unable to serve http at address %s: %s", s.Addr, err)
}
}
func startHTTPServer(ctx *httpServerCtx) {
ctx.buildServer()
ctx.started = time.Now()
ctx.serveHTTP()
}