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server.go
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server.go
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// Copyright (c) 2020 Uber Technologies, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package server
import (
"fmt"
"log"
"os"
"os/signal"
"syscall"
"time"
m3aggregator "github.com/m3db/m3/src/aggregator/aggregator"
"github.com/m3db/m3/src/cmd/services/m3aggregator/config"
"github.com/m3db/m3/src/cmd/services/m3aggregator/serve"
xconfig "github.com/m3db/m3/src/x/config"
"github.com/m3db/m3/src/x/instrument"
"go.uber.org/zap"
)
const (
gracefulShutdownTimeout = 15 * time.Second
)
// RunOptions are the server options for running the aggregator server.
type RunOptions struct {
// Config is the aggregator configuration.
Config config.Configuration
// AdminOptions are additional options to apply to the aggregator server.
AdminOptions []AdminOption
// CustomBuildTags are additional tags to be added to the instrument build
// reporter.
CustomBuildTags map[string]string
}
// AdminOption is an additional option to apply to the aggregator server.
type AdminOption func(opts serve.Options) (serve.Options, error)
// Run runs the aggregator server.
func Run(opts RunOptions) {
cfg := opts.Config
// Create logger and metrics scope.
logger, err := cfg.Logging.BuildLogger()
if err != nil {
log.Fatalf("error creating logger: %v", err)
}
defer logger.Sync()
cfg.Debug.SetRuntimeValues(logger)
xconfig.WarnOnDeprecation(cfg, logger)
scope, closer, err := cfg.Metrics.NewRootScope()
if err != nil {
logger.Fatal("error creating metrics root scope", zap.Error(err))
}
defer closer.Close()
instrumentOpts := instrument.NewOptions().
SetLogger(logger).
SetMetricsScope(scope).
SetTimerOptions(instrument.TimerOptions{StandardSampleRate: cfg.Metrics.SampleRate()}).
SetReportInterval(cfg.Metrics.ReportInterval()).
SetCustomBuildTags(opts.CustomBuildTags)
buildReporter := instrument.NewBuildReporter(instrumentOpts)
if err := buildReporter.Start(); err != nil {
logger.Fatal("could not start build reporter", zap.Error(err))
}
defer buildReporter.Stop()
serverOptions := serve.NewOptions(instrumentOpts)
if cfg.M3Msg != nil {
// Create the M3Msg server options.
m3msgInsrumentOpts := instrumentOpts.
SetMetricsScope(scope.
SubScope("m3msg-server").
Tagged(map[string]string{"server": "m3msg"}))
m3msgServerOpts, err := cfg.M3Msg.NewServerOptions(m3msgInsrumentOpts)
if err != nil {
logger.Fatal("could not create m3msg server options", zap.Error(err))
}
serverOptions = serverOptions.
SetM3MsgAddr(cfg.M3Msg.Server.ListenAddress).
SetM3MsgServerOpts(m3msgServerOpts)
}
if cfg.RawTCP != nil {
// Create the raw TCP server options.
rawTCPInstrumentOpts := instrumentOpts.
SetMetricsScope(scope.
SubScope("rawtcp-server").
Tagged(map[string]string{"server": "rawtcp"}))
serverOptions = serverOptions.
SetRawTCPAddr(cfg.RawTCP.ListenAddress).
SetRawTCPServerOpts(cfg.RawTCP.NewServerOptions(rawTCPInstrumentOpts))
}
if cfg.HTTP != nil {
// Create the http server options.
serverOptions = serverOptions.
SetHTTPAddr(cfg.HTTP.ListenAddress).
SetHTTPServerOpts(cfg.HTTP.NewServerOptions())
}
for i, transform := range opts.AdminOptions {
if opts, err := transform(serverOptions); err != nil {
logger.Fatal("could not apply transform",
zap.Int("index", i), zap.Error(err))
} else {
serverOptions = opts
}
}
// Create the kv client.
client, err := cfg.KVClient.NewKVClient(instrumentOpts.
SetMetricsScope(scope.SubScope("kv-client")))
if err != nil {
logger.Fatal("error creating the kv client", zap.Error(err))
}
// Create the runtime options manager.
runtimeOptsManager := cfg.RuntimeOptions.NewRuntimeOptionsManager()
// Create the aggregator.
aggregatorOpts, err := cfg.Aggregator.NewAggregatorOptions(
serverOptions.RawTCPAddr(),
client, serverOptions, runtimeOptsManager,
instrumentOpts.SetMetricsScope(scope.SubScope("aggregator")))
if err != nil {
logger.Fatal("error creating aggregator options", zap.Error(err))
}
aggregator := m3aggregator.NewAggregator(aggregatorOpts)
if err := aggregator.Open(); err != nil {
logger.Fatal("error opening the aggregator", zap.Error(err))
}
// Watch runtime option changes after aggregator is open.
placementManager := aggregatorOpts.PlacementManager()
cfg.RuntimeOptions.WatchRuntimeOptionChanges(client, runtimeOptsManager, placementManager, logger)
doneCh := make(chan struct{})
closedCh := make(chan struct{})
go func() {
if err := serve.Serve(
aggregator,
doneCh,
serverOptions,
); err != nil {
logger.Fatal("could not start serving traffic", zap.Error(err))
}
logger.Debug("server closed")
close(closedCh)
}()
// Handle interrupts.
sigC := make(chan os.Signal, 1)
signal.Notify(sigC, syscall.SIGINT, syscall.SIGTERM)
logger.Warn("interrupt", zap.Any("signal", fmt.Errorf("%s", <-sigC)))
if s := cfg.Aggregator.ShutdownWaitTimeout; s != 0 {
logger.Info("waiting intentional shutdown period", zap.Duration("waitTimeout", s))
select {
case sig := <-sigC:
logger.Info("second signal received, skipping shutdown wait", zap.String("signal", sig.String()))
case <-time.After(cfg.Aggregator.ShutdownWaitTimeout):
logger.Info("shutdown period elapsed")
}
}
close(doneCh)
select {
case <-closedCh:
logger.Info("server closed clean")
case <-time.After(gracefulShutdownTimeout):
logger.Info("server closed due to timeout", zap.Duration("timeout", gracefulShutdownTimeout))
}
}