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server.go
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server.go
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// Unless explicitly stated otherwise all files in this repository are licensed
// under the Apache License Version 2.0.
// This product includes software developed at Datadog (https://www.datadoghq.com/).
// Copyright 2016-present Datadog, Inc.
package apiimpl
import (
"crypto/tls"
"fmt"
stdLog "log"
"net"
"net/http"
"github.com/cihub/seelog"
"github.com/DataDog/datadog-agent/comp/aggregator/demultiplexer"
"github.com/DataDog/datadog-agent/comp/api/api"
"github.com/DataDog/datadog-agent/comp/collector/collector"
"github.com/DataDog/datadog-agent/comp/core/autodiscovery"
"github.com/DataDog/datadog-agent/comp/core/gui"
"github.com/DataDog/datadog-agent/comp/core/secrets"
"github.com/DataDog/datadog-agent/comp/core/settings"
"github.com/DataDog/datadog-agent/comp/core/status"
"github.com/DataDog/datadog-agent/comp/core/tagger"
"github.com/DataDog/datadog-agent/comp/core/workloadmeta"
"github.com/DataDog/datadog-agent/comp/dogstatsd/pidmap"
"github.com/DataDog/datadog-agent/comp/dogstatsd/replay"
dogstatsdServer "github.com/DataDog/datadog-agent/comp/dogstatsd/server"
dogstatsddebug "github.com/DataDog/datadog-agent/comp/dogstatsd/serverDebug"
"github.com/DataDog/datadog-agent/comp/forwarder/eventplatformreceiver"
logsAgent "github.com/DataDog/datadog-agent/comp/logs/agent"
"github.com/DataDog/datadog-agent/comp/metadata/host"
"github.com/DataDog/datadog-agent/comp/metadata/inventoryagent"
"github.com/DataDog/datadog-agent/comp/metadata/inventorychecks"
"github.com/DataDog/datadog-agent/comp/metadata/inventoryhost"
"github.com/DataDog/datadog-agent/comp/metadata/packagesigning"
"github.com/DataDog/datadog-agent/comp/remote-config/rcservice"
"github.com/DataDog/datadog-agent/comp/remote-config/rcservicemrf"
"github.com/DataDog/datadog-agent/pkg/aggregator/sender"
"github.com/DataDog/datadog-agent/pkg/config"
"github.com/DataDog/datadog-agent/pkg/util/log"
"github.com/DataDog/datadog-agent/pkg/util/optional"
)
func startServer(listener net.Listener, srv *http.Server, name string) {
// Use a stack depth of 4 on top of the default one to get a relevant filename in the stdlib
logWriter, _ := config.NewLogWriter(5, seelog.ErrorLvl)
srv.ErrorLog = stdLog.New(logWriter, fmt.Sprintf("Error from the Agent HTTP server '%s': ", name), 0) // log errors to seelog
tlsListener := tls.NewListener(listener, srv.TLSConfig)
go srv.Serve(tlsListener) //nolint:errcheck
log.Infof("Started HTTP server '%s' on %s", name, listener.Addr().String())
}
func stopServer(listener net.Listener, name string) {
if listener != nil {
if err := listener.Close(); err != nil {
log.Errorf("Error stopping HTTP server '%s': %s", name, err)
} else {
log.Infof("Stopped HTTP server '%s'", name)
}
}
}
// StartServers creates certificates and starts API + IPC servers
func StartServers(
configService optional.Option[rcservice.Component],
configServiceMRF optional.Option[rcservicemrf.Component],
dogstatsdServer dogstatsdServer.Component,
capture replay.Component,
pidMap pidmap.Component,
serverDebug dogstatsddebug.Component,
wmeta workloadmeta.Component,
taggerComp tagger.Component,
logsAgent optional.Option[logsAgent.Component],
senderManager sender.DiagnoseSenderManager,
hostMetadata host.Component,
invAgent inventoryagent.Component,
demux demultiplexer.Component,
invHost inventoryhost.Component,
secretResolver secrets.Component,
invChecks inventorychecks.Component,
pkgSigning packagesigning.Component,
statusComponent status.Component,
collector optional.Option[collector.Component],
eventPlatformReceiver eventplatformreceiver.Component,
ac autodiscovery.Component,
gui optional.Option[gui.Component],
settings settings.Component,
providers []api.EndpointProvider,
) error {
apiAddr, err := getIPCAddressPort()
if err != nil {
return fmt.Errorf("unable to get IPC address and port: %v", err)
}
additionalHostIdentities := []string{apiAddr}
ipcServerHost, ipcServerHostPort, ipcServerEnabled := getIPCServerAddressPort()
if ipcServerEnabled {
additionalHostIdentities = append(additionalHostIdentities, ipcServerHost)
}
tlsKeyPair, tlsCertPool, err := initializeTLS(additionalHostIdentities...)
if err != nil {
return fmt.Errorf("unable to initialize TLS: %v", err)
}
tlsConfig := &tls.Config{
Certificates: []tls.Certificate{*tlsKeyPair},
NextProtos: []string{"h2"},
MinVersion: tls.VersionTLS12,
}
// start the CMD server
if err := startCMDServer(
apiAddr,
tlsConfig,
tlsCertPool,
configService,
configServiceMRF,
dogstatsdServer,
capture,
pidMap,
serverDebug,
wmeta,
taggerComp,
logsAgent,
senderManager,
hostMetadata,
invAgent,
demux,
invHost,
secretResolver,
invChecks,
pkgSigning,
statusComponent,
collector,
eventPlatformReceiver,
ac,
gui,
settings,
providers,
); err != nil {
return fmt.Errorf("unable to start CMD API server: %v", err)
}
// start the IPC server
if ipcServerEnabled {
if err := startIPCServer(ipcServerHostPort, tlsConfig); err != nil {
// if we fail to start the IPC server, we should stop the CMD server
StopServers()
return fmt.Errorf("unable to start IPC API server: %v", err)
}
}
return nil
}
// StopServers closes the connections and the servers
func StopServers() {
stopCMDServer()
stopIPCServer()
}