mirror of
https://github.com/prometheus-community/windows_exporter.git
synced 2026-02-08 05:56:37 +00:00
98 lines
3.0 KiB
Go
98 lines
3.0 KiB
Go
// SPDX-License-Identifier: Apache-2.0
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//
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// Copyright The Prometheus Authors
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may 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, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//go:build windows
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package hcs
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import (
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"encoding/json"
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"fmt"
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"github.com/prometheus-community/windows_exporter/internal/utils"
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"golang.org/x/sys/windows"
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)
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//nolint:gochecknoglobals
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var (
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ContainerQuery = utils.Must(windows.UTF16PtrFromString(`{"Types":["Container"]}`))
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StatisticsQuery = utils.Must(windows.UTF16PtrFromString(`{"PropertyTypes":["Statistics"]}`))
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)
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func GetContainers() ([]Properties, error) {
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operation, err := CreateOperation()
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if err != nil {
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return nil, fmt.Errorf("failed to create operation: %w", err)
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}
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defer CloseOperation(operation)
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if err := EnumerateComputeSystems(ContainerQuery, operation); err != nil {
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return nil, fmt.Errorf("failed to enumerate compute systems: %w", err)
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}
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resultDocument, err := WaitForOperationResult(operation, 1000)
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if err != nil {
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return nil, fmt.Errorf("failed to wait and get for operation result: %w - %s", err, resultDocument)
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} else if resultDocument == "" {
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return nil, ErrEmptyResultDocument
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}
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var computeSystems []Properties
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if err := json.Unmarshal([]byte(resultDocument), &computeSystems); err != nil {
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return nil, fmt.Errorf("failed to unmarshal compute systems: %w", err)
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}
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return computeSystems, nil
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}
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func GetContainerStatistics(containerID string) (Statistics, error) {
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computeSystem, err := OpenComputeSystem(containerID)
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if err != nil {
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return Statistics{}, fmt.Errorf("failed to open compute system: %w", err)
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}
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defer CloseComputeSystem(computeSystem)
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operation, err := CreateOperation()
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if err != nil {
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return Statistics{}, fmt.Errorf("failed to create operation: %w", err)
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}
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defer CloseOperation(operation)
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if err := GetComputeSystemProperties(computeSystem, operation, StatisticsQuery); err != nil {
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return Statistics{}, fmt.Errorf("failed to enumerate compute systems: %w", err)
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}
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resultDocument, err := WaitForOperationResult(operation, 1000)
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if err != nil {
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return Statistics{}, fmt.Errorf("failed to get compute system properties: %w", err)
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} else if resultDocument == "" {
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return Statistics{}, ErrEmptyResultDocument
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}
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var properties Properties
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if err := json.Unmarshal([]byte(resultDocument), &properties); err != nil {
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return Statistics{}, fmt.Errorf("failed to unmarshal system properties: %w", err)
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}
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if properties.Statistics == nil {
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return Statistics{}, fmt.Errorf("no statistics found for container %s", containerID)
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}
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return *properties.Statistics, nil
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}
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