81 lines
2.5 KiB
Go
81 lines
2.5 KiB
Go
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// Licensed to Elasticsearch B.V. under one or more contributor
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// license agreements. See the NOTICE file distributed with
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// this work for additional information regarding copyright
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// ownership. Elasticsearch B.V. licenses this file to you under
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// the Apache License, Version 2.0 (the "License"); you may
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// 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,
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// software distributed under the License is distributed on an
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// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations
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// under the License.
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package service
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import (
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"os"
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"time"
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"golang.org/x/sys/windows/svc"
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"golang.org/x/sys/windows/svc/debug"
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"github.com/elastic/beats/libbeat/logp"
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)
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type beatService struct{}
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// Execute runs the beat service with the arguments and manages changes that
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// occur in the environment or runtime that may affect the beat.
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func (m *beatService) Execute(args []string, r <-chan svc.ChangeRequest, changes chan<- svc.Status) (ssec bool, errno uint32) {
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const cmdsAccepted = svc.AcceptStop | svc.AcceptShutdown
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changes <- svc.Status{State: svc.StartPending}
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changes <- svc.Status{State: svc.Running, Accepts: cmdsAccepted}
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loop:
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for c := range r {
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switch c.Cmd {
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case svc.Interrogate:
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changes <- c.CurrentStatus
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// Testing deadlock from https://code.google.com/p/winsvc/issues/detail?id=4
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time.Sleep(100 * time.Millisecond)
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changes <- c.CurrentStatus
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case svc.Stop, svc.Shutdown:
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break loop
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default:
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logp.Err("Unexpected control request: $%d. Ignored.", c)
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}
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}
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changes <- svc.Status{State: svc.StopPending}
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return
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}
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// ProcessWindowsControlEvents on Windows machines creates a loop
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// that only finishes when a Stop or Shutdown request is received.
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// On non-windows platforms, the function does nothing. The
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// stopCallback function is called when the Stop/Shutdown
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// request is received.
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func ProcessWindowsControlEvents(stopCallback func()) {
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isInteractive, err := svc.IsAnInteractiveSession()
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if err != nil {
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logp.Err("IsAnInteractiveSession: %v", err)
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return
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}
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logp.Debug("service", "Windows is interactive: %v", isInteractive)
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run := svc.Run
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if isInteractive {
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run = debug.Run
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}
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err = run(os.Args[0], &beatService{})
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if err != nil {
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logp.Err("Error: %v", err)
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} else {
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stopCallback()
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}
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}
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