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memory: fix panics if metrics does not exists (#1960)

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Signed-off-by: Jan-Otto Kröpke <mail@jkroepke.de>
This commit is contained in:
Jan-Otto Kröpke
2025-04-04 23:21:26 +02:00
committed by GitHub
parent 88c929ac6f
commit ecc805f0fa
39 changed files with 565 additions and 364 deletions
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38
internal/collector/printer/printer.go
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@@ -126,25 +126,6 @@ func (c *Collector) Close() error {
}
func (c *Collector) Build(_ *slog.Logger, miSession *mi.Session) error {
if miSession == nil {
return errors.New("miSession is nil")
}
miQuery, err := mi.NewQuery("SELECT Name, Default, PrinterStatus, JobCountSinceLastReset FROM win32_Printer")
if err != nil {
return fmt.Errorf("failed to create WMI query: %w", err)
}
c.miQueryPrinter = miQuery
miQuery, err = mi.NewQuery("SELECT Name, Status FROM win32_PrintJob")
if err != nil {
return fmt.Errorf("failed to create WMI query: %w", err)
}
c.miQueryPrinterJobs = miQuery
c.miSession = miSession
c.printerJobStatus = prometheus.NewDesc(
prometheus.BuildFQName(types.Namespace, Name, "job_status"),
"A counter of printer jobs by status",
@@ -164,6 +145,25 @@ func (c *Collector) Build(_ *slog.Logger, miSession *mi.Session) error {
nil,
)
if miSession == nil {
return errors.New("miSession is nil")
}
miQuery, err := mi.NewQuery("SELECT Name, Default, PrinterStatus, JobCountSinceLastReset FROM win32_Printer")
if err != nil {
return fmt.Errorf("failed to create WMI query: %w", err)
}
c.miQueryPrinter = miQuery
miQuery, err = mi.NewQuery("SELECT Name, Status FROM win32_PrintJob")
if err != nil {
return fmt.Errorf("failed to create WMI query: %w", err)
}
c.miQueryPrinterJobs = miQuery
c.miSession = miSession
return nil
}