Files
windows_exporter/internal/collector/mssql/mssql_instance.go
2025-08-26 20:52:09 +02:00

84 lines
2.1 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 mssql
import (
"fmt"
"log/slog"
"github.com/prometheus-community/windows_exporter/internal/types"
"github.com/prometheus/client_golang/prometheus"
"golang.org/x/sys/windows/registry"
)
type collectorInstance struct {
instances *prometheus.Desc
}
func (c *Collector) buildInstance() error {
c.instances = prometheus.NewDesc(
prometheus.BuildFQName(types.Namespace, Name, "instance_info"),
"A metric with a constant '1' value labeled with mssql instance information",
[]string{"edition", "mssql_instance", "patch", "version"},
nil,
)
return nil
}
func (c *Collector) collectInstance(ch chan<- prometheus.Metric) error {
for _, instance := range c.mssqlInstances {
regKeyName := fmt.Sprintf(`Software\Microsoft\Microsoft SQL Server\%s\Setup`, instance.instanceName)
regKey, err := registry.OpenKey(registry.LOCAL_MACHINE, regKeyName, registry.QUERY_VALUE)
if err != nil {
c.logger.Debug(fmt.Sprintf("couldn't open registry %s:", regKeyName),
slog.Any("err", err),
)
continue
}
patchVersion, _, err := regKey.GetStringValue("PatchLevel")
_ = regKey.Close()
if err != nil {
c.logger.Debug("couldn't get version from registry",
slog.Any("err", err),
)
continue
}
ch <- prometheus.MustNewConstMetric(
c.instances,
prometheus.GaugeValue,
1,
instance.edition,
instance.name,
patchVersion,
instance.majorVersion.String(),
)
}
return nil
}
func (c *Collector) closeInstance() {
}