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http.go
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http.go
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// Copyright (c) 2020 The Jaeger Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package server
import (
"net"
"net/http"
"strconv"
"github.com/gorilla/mux"
"github.com/uber/jaeger-lib/metrics"
"go.uber.org/zap"
"github.com/jaegertracing/jaeger/cmd/collector/app/handler"
"github.com/jaegertracing/jaeger/cmd/collector/app/sampling/strategystore"
clientcfgHandler "github.com/jaegertracing/jaeger/pkg/clientcfg/clientcfghttp"
"github.com/jaegertracing/jaeger/pkg/healthcheck"
)
// HTTPServerParams to construct a new Jaeger Collector HTTP Server
type HTTPServerParams struct {
Port int
Handler handler.JaegerBatchesHandler
RecoveryHandler func(http.Handler) http.Handler
SamplingStore strategystore.StrategyStore
MetricsFactory metrics.Factory
HealthCheck *healthcheck.HealthCheck
Logger *zap.Logger
}
// StartHTTPServer based on the given parameters
func StartHTTPServer(params *HTTPServerParams) (*http.Server, error) {
httpPortStr := ":" + strconv.Itoa(params.Port)
params.Logger.Info("Starting jaeger-collector HTTP server", zap.String("http-host-port", httpPortStr))
listener, err := net.Listen("tcp", httpPortStr)
if err != nil {
return nil, err
}
server := &http.Server{Addr: httpPortStr}
serveHTTP(server, listener, params)
return server, nil
}
func serveHTTP(server *http.Server, listener net.Listener, params *HTTPServerParams) {
r := mux.NewRouter()
apiHandler := handler.NewAPIHandler(params.Handler)
apiHandler.RegisterRoutes(r)
cfgHandler := clientcfgHandler.NewHTTPHandler(clientcfgHandler.HTTPHandlerParams{
ConfigManager: &clientcfgHandler.ConfigManager{
SamplingStrategyStore: params.SamplingStore,
// TODO provide baggage manager
},
MetricsFactory: params.MetricsFactory,
BasePath: "/api",
LegacySamplingEndpoint: false,
})
cfgHandler.RegisterRoutes(r)
server.Handler = params.RecoveryHandler(r)
go func(listener net.Listener, hServer *http.Server) {
if err := hServer.Serve(listener); err != nil {
if err != http.ErrServerClosed {
params.Logger.Fatal("Could not start HTTP collector", zap.Error(err))
}
}
params.HealthCheck.Set(healthcheck.Unavailable)
}(listener, server)
}