mirror of
https://github.com/prometheus-community/windows_exporter.git
synced 2026-02-08 05:56:37 +00:00
135 lines
3.9 KiB
Go
135 lines
3.9 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 hcn
|
|
|
|
import (
|
|
"encoding/json"
|
|
"fmt"
|
|
"unsafe"
|
|
|
|
"github.com/prometheus-community/windows_exporter/internal/headers/guid"
|
|
"github.com/prometheus-community/windows_exporter/internal/headers/hcs"
|
|
"golang.org/x/sys/windows"
|
|
)
|
|
|
|
//nolint:gochecknoglobals
|
|
var (
|
|
modComputeNetwork = windows.NewLazySystemDLL("computenetwork.dll")
|
|
|
|
procHcnEnumerateEndpoints = modComputeNetwork.NewProc("HcnEnumerateEndpoints")
|
|
procHcnOpenEndpoint = modComputeNetwork.NewProc("HcnOpenEndpoint")
|
|
procHcnQueryEndpointProperties = modComputeNetwork.NewProc("HcnQueryEndpointProperties")
|
|
procHcnCloseEndpoint = modComputeNetwork.NewProc("HcnCloseEndpoint")
|
|
)
|
|
|
|
// EnumerateEndpoints enumerates the endpoints.
|
|
//
|
|
// https://learn.microsoft.com/en-us/virtualization/api/hcn/reference/hcnenumerateendpoints
|
|
func EnumerateEndpoints() ([]guid.GUID, error) {
|
|
var (
|
|
endpointsJSON *uint16
|
|
errorRecord *uint16
|
|
)
|
|
|
|
r1, _, _ := procHcnEnumerateEndpoints.Call(
|
|
0,
|
|
uintptr(unsafe.Pointer(&endpointsJSON)),
|
|
uintptr(unsafe.Pointer(&errorRecord)),
|
|
)
|
|
|
|
windows.CoTaskMemFree(unsafe.Pointer(errorRecord))
|
|
result := windows.UTF16PtrToString(endpointsJSON)
|
|
|
|
if r1 != 0 {
|
|
return nil, fmt.Errorf("HcnEnumerateEndpoints failed: HRESULT 0x%X: %w", r1, hcs.Win32FromHResult(r1))
|
|
}
|
|
|
|
var endpoints []guid.GUID
|
|
|
|
if err := json.Unmarshal([]byte(result), &endpoints); err != nil {
|
|
return nil, fmt.Errorf("failed to unmarshal JSON: %w", err)
|
|
}
|
|
|
|
return endpoints, nil
|
|
}
|
|
|
|
// OpenEndpoint opens an endpoint.
|
|
//
|
|
// https://learn.microsoft.com/en-us/virtualization/api/hcn/reference/hcnopenendpoint
|
|
func OpenEndpoint(id guid.GUID) (Endpoint, error) {
|
|
var (
|
|
endpoint Endpoint
|
|
errorRecord *uint16
|
|
)
|
|
|
|
r1, _, _ := procHcnOpenEndpoint.Call(
|
|
uintptr(unsafe.Pointer(&id)),
|
|
uintptr(unsafe.Pointer(&endpoint)),
|
|
uintptr(unsafe.Pointer(&errorRecord)),
|
|
)
|
|
|
|
windows.CoTaskMemFree(unsafe.Pointer(errorRecord))
|
|
|
|
if r1 != 0 {
|
|
return 0, fmt.Errorf("HcnOpenEndpoint failed: HRESULT 0x%X: %w", r1, hcs.Win32FromHResult(r1))
|
|
}
|
|
|
|
return endpoint, nil
|
|
}
|
|
|
|
// QueryEndpointProperties queries the properties of an endpoint.
|
|
//
|
|
// https://learn.microsoft.com/en-us/virtualization/api/hcn/reference/hcnqueryendpointproperties
|
|
func QueryEndpointProperties(endpoint Endpoint, propertyQuery *uint16) (EndpointProperties, error) {
|
|
var (
|
|
resultDocument *uint16
|
|
errorRecord *uint16
|
|
)
|
|
|
|
r1, _, _ := procHcnQueryEndpointProperties.Call(
|
|
uintptr(endpoint),
|
|
uintptr(unsafe.Pointer(&propertyQuery)),
|
|
uintptr(unsafe.Pointer(&resultDocument)),
|
|
uintptr(unsafe.Pointer(&errorRecord)),
|
|
)
|
|
|
|
windows.CoTaskMemFree(unsafe.Pointer(errorRecord))
|
|
|
|
result := windows.UTF16PtrToString(resultDocument)
|
|
windows.CoTaskMemFree(unsafe.Pointer(resultDocument))
|
|
|
|
if r1 != 0 {
|
|
return EndpointProperties{}, fmt.Errorf("HcsGetComputeSystemProperties failed: HRESULT 0x%X: %w", r1, hcs.Win32FromHResult(r1))
|
|
}
|
|
|
|
var properties EndpointProperties
|
|
|
|
if err := json.Unmarshal([]byte(result), &properties); err != nil {
|
|
return EndpointProperties{}, fmt.Errorf("failed to unmarshal JSON: %w", err)
|
|
}
|
|
|
|
return properties, nil
|
|
}
|
|
|
|
// CloseEndpoint close a handle to an Endpoint.
|
|
//
|
|
// https://learn.microsoft.com/en-us/virtualization/api/hcn/reference/hcncloseendpoint
|
|
func CloseEndpoint(endpoint Endpoint) {
|
|
_, _, _ = procHcnCloseEndpoint.Call(uintptr(endpoint))
|
|
}
|