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Update powershell command for uptime to help efficiency

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michelletandya
2021-08-18 23:51:51 +00:00
parent f1aa82a9ae
commit dd0d0d71ab
1 changed files with 10 additions and 3 deletions
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13
pkg/healthchecker/health_checker_windows.go
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@@ -33,12 +33,19 @@ import (
// getUptimeFunc returns the time for which the given service has been running.
func getUptimeFunc(service string) func() (time.Duration, error) {
return func() (time.Duration, error) {
// Using the WinEvent Log Objects to find the Service logs' time when the Service last entered running state.
// To attempt to calculate uptime more efficiently, we attempt to grab the process id to grab the start time.
// If the process id does not exist (meaning the service is not running for some reason), we will result to
// using the WinEvent Log Objects to find the Service logs' time when the Service last entered running state.
// In addition to filtering not by the logname=system we also filter on event id=7036 to reduce the number of
// entries the next command Where-Object will have to look through. id 7036 messages indicating a stopped or running service.
// The powershell command formats the TimeCreated of the event log in RFC1123Pattern.
// However, because the time library parser does not recognize the ',' in this RFC1123Pattern format,
// it is manually removed before parsing it using the UptimeTimeLayout.
getTimeCreatedCmd := "(Get-WinEvent -Logname System | Where-Object {$_.Message -Match '.*(" + service +
").*(running).*'} | Select-Object -Property TimeCreated -First 1 | foreach {$_.TimeCreated.ToString('R')} | Out-String).Trim()"
getTimeCreatedCmd := `$ProcessId = (Get-WMIObject -Class Win32_Service -Filter "Name='` + service + `'" | Select-Object -ExpandProperty ProcessId);` +
`if ([string]::IsNullOrEmpty($ProcessId) -or $ProcessId -eq 0) { (Get-WinEvent -FilterHashtable @{logname='system';id=7036} ` +
`| Where-Object {$_.Message -match '.*(` + service + `).*(running).*'} | Select-Object -Property TimeCreated -First 1 | ` +
`foreach {$_.TimeCreated.ToString('R')} | Out-String).Trim() } else { (Get-Process -Id $ProcessId | Select starttime | ` +
`foreach {$_.starttime.ToString('R')} | Out-String).Trim() }`
out, err := powershell(getTimeCreatedCmd)
if err != nil {
return time.Duration(0), err