windows_exporter/collector/msmq.go

138 lines
3.7 KiB
Go

//go:build windows
// +build windows
package collector
import (
"strings"
"github.com/alecthomas/kingpin/v2"
"github.com/go-kit/log"
"github.com/go-kit/log/level"
"github.com/prometheus/client_golang/prometheus"
"github.com/yusufpapurcu/wmi"
)
const (
FlagMsmqWhereClause = "collector.msmq.msmq-where"
)
var (
msmqWhereClause *string
)
// A Win32_PerfRawData_MSMQ_MSMQQueueCollector is a Prometheus collector for WMI Win32_PerfRawData_MSMQ_MSMQQueue metrics
type Win32_PerfRawData_MSMQ_MSMQQueueCollector struct {
logger log.Logger
BytesinJournalQueue *prometheus.Desc
BytesinQueue *prometheus.Desc
MessagesinJournalQueue *prometheus.Desc
MessagesinQueue *prometheus.Desc
queryWhereClause string
}
// newMSMQCollectorFlags ..
func newMSMQCollectorFlags(app *kingpin.Application) {
msmqWhereClause = app.Flag(FlagMsmqWhereClause, "WQL 'where' clause to use in WMI metrics query. Limits the response to the msmqs you specify and reduces the size of the response.").String()
}
// NewWin32_PerfRawData_MSMQ_MSMQQueueCollector ...
func newMSMQCollector(logger log.Logger) (Collector, error) {
const subsystem = "msmq"
logger = log.With(logger, "collector", subsystem)
if *msmqWhereClause == "" {
level.Warn(logger).Log("msg", "No where-clause specified for msmq collector. This will generate a very large number of metrics!")
}
return &Win32_PerfRawData_MSMQ_MSMQQueueCollector{
logger: logger,
BytesinJournalQueue: prometheus.NewDesc(
prometheus.BuildFQName(Namespace, subsystem, "bytes_in_journal_queue"),
"Size of queue journal in bytes",
[]string{"name"},
nil,
),
BytesinQueue: prometheus.NewDesc(
prometheus.BuildFQName(Namespace, subsystem, "bytes_in_queue"),
"Size of queue in bytes",
[]string{"name"},
nil,
),
MessagesinJournalQueue: prometheus.NewDesc(
prometheus.BuildFQName(Namespace, subsystem, "messages_in_journal_queue"),
"Count messages in queue journal",
[]string{"name"},
nil,
),
MessagesinQueue: prometheus.NewDesc(
prometheus.BuildFQName(Namespace, subsystem, "messages_in_queue"),
"Count messages in queue",
[]string{"name"},
nil,
),
queryWhereClause: *msmqWhereClause,
}, nil
}
// Collect sends the metric values for each metric
// to the provided prometheus Metric channel.
func (c *Win32_PerfRawData_MSMQ_MSMQQueueCollector) Collect(ctx *ScrapeContext, ch chan<- prometheus.Metric) error {
if desc, err := c.collect(ch); err != nil {
level.Error(c.logger).Log("failed collecting msmq metrics", "desc", desc, "err", err)
return err
}
return nil
}
type Win32_PerfRawData_MSMQ_MSMQQueue struct {
Name string
BytesinJournalQueue uint64
BytesinQueue uint64
MessagesinJournalQueue uint64
MessagesinQueue uint64
}
func (c *Win32_PerfRawData_MSMQ_MSMQQueueCollector) collect(ch chan<- prometheus.Metric) (*prometheus.Desc, error) {
var dst []Win32_PerfRawData_MSMQ_MSMQQueue
q := queryAllWhere(&dst, c.queryWhereClause, c.logger)
if err := wmi.Query(q, &dst); err != nil {
return nil, err
}
for _, msmq := range dst {
ch <- prometheus.MustNewConstMetric(
c.BytesinJournalQueue,
prometheus.GaugeValue,
float64(msmq.BytesinJournalQueue),
strings.ToLower(msmq.Name),
)
ch <- prometheus.MustNewConstMetric(
c.BytesinQueue,
prometheus.GaugeValue,
float64(msmq.BytesinQueue),
strings.ToLower(msmq.Name),
)
ch <- prometheus.MustNewConstMetric(
c.MessagesinJournalQueue,
prometheus.GaugeValue,
float64(msmq.MessagesinJournalQueue),
strings.ToLower(msmq.Name),
)
ch <- prometheus.MustNewConstMetric(
c.MessagesinQueue,
prometheus.GaugeValue,
float64(msmq.MessagesinQueue),
strings.ToLower(msmq.Name),
)
}
return nil, nil
}