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KilnSupportScripts
Powershell Scripts to help monitor a Kiln environment. Contact Fog Creek support before using.
/ misc |
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<#
.SYNOPSIS
Reenqueues or destroys tasks in the Kiln Queue Service
.DESCRIPTION
This script is similar to the old FogCreek "churn the queue" script that we had for versions of Kiln prior to
2.9.x. It simply hits the URLs that are provided via the Queue Stats page to reenqueue or destrow all
failed tasks and/or all currently running tasks (since they can get stuck running sometimes). It should
be used when the page at http://localhost:56785/ indicates that the queue is choking.
.EXAMPLE
reenqueue_2.9_tasks.ps1 -retryCurrent -destroyFailures
This will reset everything that is currently in the queue, and permenantly destroy all failed tasks.
.PARAMETER qs_host
The machine name where the Queue Service is running. The default value is almost always correct.
.PARAMETER destroyFailures
Destroys all failed tasks (mutually exclusive with '-retryFailures').
.PARAMETER retryFailures
Retries all failed tasks (mutually exclusive with '-destroyFailures').
.PARAMETER destroyRunning
Destroys all currently running tasks (mutually exclusive with '-retryRunning').
.PARAMETER retryRunning
Retries all currently running tasks (mutually exclusive with '-destroyRunning').
.NOTES
Author: Quentin Schroeder
Date: Dec 13, 2012
#>
param([string]$qs_host = "localhost",
[switch]$destroyFailures,
[switch]$retryFailures,
[switch]$destroyRunning,
[switch]$retryRunning
)
function main() {
if ($destroyFailures -and $retryFailures)
{
write-host "Cannot choose to both destroy AND retry failed tasks, please select only one option."
exit
}
if ($destroyRunning -and $retryRunning)
{
write-host "Cannot choose to both destroy AND retry running tasks, please select only one option."
exit
}
if (!($destroyRunning -or $retryRunning -or $destroyFailures -or $retryFailures))
{
write-host "`nNo command was selected, this script will only show the current counts of running and failed tasks in the Queue.`n"
}
write-host ("Reading queue stats from http://{0}:56785/stats.json" -f $qs_host)
$response = (New-Object System.Net.WebClient).DownloadString("http://{0}:56785/stats.json" -f $qs_host)
if ($?) {write-host " Stats retrieved successfully.`n"}
$stats = Convert-JsonToXml($response)
$failures = $stats.root.failures
$runningTasks = $stats.root.runningTasks
$runningCount = $runningTasks.childnodes.count
$failCount = $failures.childnodes.count
write-host "Found $failCount failures..."
$i = 0
if (($failCount -gt 0) -and ($destroyFailures -or $retryFailures)) {
foreach ($failure in $failures.item) {
# Try both formats of the JSON (changed for 2.9.58)
if ($failure."#text")
{
$failure = $failure."#text"
}
elseif ($failure.id."#text")
{
$failure = $failure.id."#text"
}
else
{
$i += 1
write-host "`n$i/$failCount (NOT FOUND)..."
continue
}
$i += 1
write-host "`n$i/$failCount ($failure)..."
Process-Task $qs_host $failure $destroyFailures
}
}
write-host "`n-------`n"
write-host "Found $runningCount running tasks..."
$i = 0
if (($runningCount -gt 0) -and ($destroyRunning -or $retryRunning)) {
foreach ($runningTask in $runningTasks.item) {
# Try both formats of the JSON (changed for 2.9.58)
if ($runningTask.id."#text")
{
$runningTask = $runningTask.id."#text"
}
elseif ($runningTask.hash."#text")
{
$runningTask = $runningTask.hash."#text"
}
else
{
$i += 1
write-host "`n$i/$runningCount (NOT FOUND)..."
continue
}
$i += 1
write-host "`n$i/$runningCount ($runningTask)..."
Process-Task $qs_host $runningTask $destroyRunning
}
}
}
function Process-Task ($qs_host, $task, $destroy = $false)
{
if (!($destroy)) { write-host "Retrying task!" }
$URI = "http://{0}:56785/reenqueue?id={1}" -f ($qs_host, $task)
if ($destroy) {
write-host "Destroying task!"
$URI = "http://{0}:56785/destroy?id={1}" -f ($qs_host, $task)
}
Execute-HTTPPostCommand $URI "a=1"
if (!($?)) {
write-host "Error!"
}
}
# This is provided as an alternative to ConvertFrom-JSON, which requires Powershell V3
# which is not on most servers by default and requires a reboot to install.
# Source: (https://www.cogmotive.com/blog/powershell/parsing-json-in-powershell-xml-the-member-item-is-already-present)
Add-Type -Assembly System.ServiceModel.Web,System.Runtime.Serialization
function Convert-JsonToXml([string]$json)
{
$bytes = [byte[]][char[]]$json
$quotas = [System.Xml.XmlDictionaryReaderQuotas]::Max
$jsonReader = [System.Runtime.Serialization.Json.JsonReaderWriterFactory]::CreateJsonReader($bytes,$quotas)
try
{
$xml = new-object System.Xml.XmlDocument
$xml.Load($jsonReader)
$xml
}
finally
{
$jsonReader.Close()
}
}
# Source: (http://stackoverflow.com/questions/5246836/user-powershell-script-to-post-to-url)
function Execute-HTTPPostCommand() {
param(
[string] $target = $null,
[string] $post = $null
)
$webRequest = [System.Net.WebRequest]::Create($target)
$webRequest.ContentType = "text/html"
$PostStr = [System.Text.Encoding]::UTF8.GetBytes($post)
$webrequest.ContentLength = $PostStr.Length
$webRequest.ServicePoint.Expect100Continue = $false
$webRequest.Method = "POST"
$requestStream = $webRequest.GetRequestStream()
$requestStream.Write($PostStr, 0,$PostStr.length)
$requestStream.Close()
try
{
[System.Net.WebResponse] $resp = $webRequest.GetResponse()
}
catch [Net.WebException]
{
write-host $_.Exception.ToString()
}
$rs = $resp.GetResponseStream()
[System.IO.StreamReader] $sr = New-Object System.IO.StreamReader -argumentList $rs
[string] $results = $sr.ReadToEnd()
return $results
}
# Do everything
main
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