94 lines
2.2 KiB
Go
94 lines
2.2 KiB
Go
// Copyright 2018, OpenCensus Authors
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//
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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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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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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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// Program opencensusd collects OpenCensus stats and traces
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// to export to a configured backend.
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package main
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import (
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"fmt"
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"io"
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"io/ioutil"
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"log"
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"net"
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"os"
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"os/signal"
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"path/filepath"
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pb "github.com/census-instrumentation/opencensus-proto/gen-go/exporterproto"
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"github.com/census-instrumentation/opencensus-service/internal"
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"google.golang.org/grpc"
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)
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func main() {
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ls, err := net.Listen("tcp", "127.0.0.1:")
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if err != nil {
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log.Fatalf("Cannot listen: %v", err)
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}
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endpointFile := internal.DefaultEndpointFile()
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if err := os.MkdirAll(filepath.Dir(endpointFile), 0755); err != nil {
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log.Fatalf("Cannot make directory for the endpoint file: %v", err)
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}
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if err := ioutil.WriteFile(endpointFile, []byte(ls.Addr().String()), 0777); err != nil {
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log.Fatalf("Cannot write the endpoint file: %v", err)
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}
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c := make(chan os.Signal, 1)
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signal.Notify(c, os.Interrupt)
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go func() {
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<-c
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os.Remove(endpointFile)
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os.Exit(0)
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}()
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s := grpc.NewServer()
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pb.RegisterExportServer(s, &server{})
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if err := s.Serve(ls); err != nil {
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log.Fatalf("Failed to serve: %v", err)
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}
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}
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type server struct{}
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func (s *server) ExportSpan(stream pb.Export_ExportSpanServer) error {
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for {
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in, err := stream.Recv()
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if err == io.EOF {
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return nil
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}
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if err != nil {
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return err
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}
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// TODO(jbd): Implement.
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fmt.Println(in)
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}
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}
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func (s *server) ExportMetrics(stream pb.Export_ExportMetricsServer) error {
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for {
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in, err := stream.Recv()
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if err == io.EOF {
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return nil
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}
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if err != nil {
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return err
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}
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// TODO(jbd): Implement.
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fmt.Println(in)
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}
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}
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// TODO(jbd): Implement exporting to a backend.
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