mirror of
https://github.com/prometheus-community/windows_exporter.git
synced 2026-02-08 05:56:37 +00:00
93 lines
2.4 KiB
Go
93 lines
2.4 KiB
Go
// SPDX-License-Identifier: Apache-2.0
|
|
//
|
|
// Copyright The Prometheus 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.
|
|
|
|
//go:build windows
|
|
|
|
package schedule_service
|
|
|
|
import (
|
|
"errors"
|
|
"fmt"
|
|
"runtime"
|
|
|
|
"github.com/go-ole/go-ole"
|
|
"github.com/go-ole/go-ole/oleutil"
|
|
)
|
|
|
|
type ScheduleService struct {
|
|
taskSchedulerObj *ole.IUnknown
|
|
taskServiceObj *ole.IDispatch
|
|
taskService *ole.VARIANT
|
|
}
|
|
|
|
func New() *ScheduleService {
|
|
return &ScheduleService{}
|
|
}
|
|
|
|
func (s *ScheduleService) Connect() error {
|
|
// The only way to run WMI queries in parallel while being thread-safe is to
|
|
// ensure the CoInitialize[Ex]() call is bound to its current OS thread.
|
|
// Otherwise, attempting to initialize and run parallel queries across
|
|
// goroutines will result in protected memory errors.
|
|
runtime.LockOSThread()
|
|
defer runtime.UnlockOSThread()
|
|
|
|
if err := ole.CoInitializeEx(0, ole.COINIT_MULTITHREADED|ole.COINIT_DISABLE_OLE1DDE); err != nil {
|
|
var oleCode *ole.OleError
|
|
if errors.As(err, &oleCode) && oleCode.Code() != ole.S_OK && oleCode.Code() != 0x00000001 {
|
|
return err
|
|
}
|
|
}
|
|
|
|
scheduleClassID, err := ole.ClassIDFrom("Schedule.Service")
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
s.taskSchedulerObj, err = ole.CreateInstance(scheduleClassID, nil)
|
|
if err != nil || s.taskSchedulerObj == nil {
|
|
return err
|
|
}
|
|
|
|
s.taskService, err = oleutil.CallMethod(s.taskServiceObj, "Connect")
|
|
if err != nil {
|
|
return fmt.Errorf("failed to connect to task service: %w", err)
|
|
}
|
|
|
|
s.taskServiceObj = s.taskSchedulerObj.MustQueryInterface(ole.IID_IDispatch)
|
|
|
|
return nil
|
|
}
|
|
|
|
func (s *ScheduleService) GetOLETaskServiceObj() *ole.IDispatch {
|
|
return s.taskServiceObj
|
|
}
|
|
|
|
func (s *ScheduleService) Close() {
|
|
if s.taskService != nil {
|
|
_ = s.taskService.Clear()
|
|
}
|
|
|
|
if s.taskServiceObj != nil {
|
|
s.taskServiceObj.Release()
|
|
}
|
|
|
|
if s.taskSchedulerObj != nil {
|
|
s.taskSchedulerObj.Release()
|
|
}
|
|
|
|
ole.CoUninitialize()
|
|
}
|