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Import-Module AWSPowerShell
 
Function PushMetrics() {
    try 
    {
        Write-CWMetricData -Namespace $Namespace -MetricData $metrics -Verbose
    }
    catch 
    {
        $ErrorMessage = $_.Exception.Message
        Write-Output $ErrorMessage | Out-File -FilePath $logpath -Append 
    } 
    $metrics = @();
}
 
#Feel free to change this to match any existing namespaces you might have.
$Namespace = 'Custom-Services'
 
#Update the log path, use this for troubleshooting. 
$logpath = "C:\AWS Cloudwatch\Log.txt"
 
# Associate current EC2 instance with your custom cloudwatch metric
$instanceDimension = New-Object -TypeName Amazon.CloudWatch.Model.Dimension;
$instanceDimension.Name = "Host";
$instanceDimension.Value = $env:computername;
 
Write-Output "$([DateTime]::Now)" | Out-File  -FilePath $logpath -Append
 
$metrics = @();
 
# Windows Services
	
$services = Get-Service -Name *custom*
$services | Out-File -FilePath $logpath -Append
 
# For each service, add a metric to metrics collection that adds a data point to a CloudWatch Metric named 'Status' with dimensions: instanceid, servicename
$services | % { 
    $dimensions = @();
 
    $serviceDimension = New-Object -TypeName Amazon.CloudWatch.Model.Dimension;
    $serviceDimension.Name = "Service"
    $serviceDimension.Value = $_.Name;  
 
    $dimensions += $instanceDimension;
    $dimensions += $serviceDimension;
 
    $metric = New-Object -TypeName Amazon.CloudWatch.Model.MetricDatum;
    $metric.Timestamp = [DateTime]::UtcNow;
    $metric.MetricName = 'Status';
    $metric.Value = if ($_.Status -eq 'Running') {1} ELSE {0}
    $metric.Dimensions = $dimensions;
 
    $metrics += $metric;
    PushMetrics; 
}
 
# Scheduled Tasks
 
$schtask = schtasks.exe /query /V /FO CSV | ConvertFrom-Csv
 
if ($schtask)
{
    foreach ($sch in $schtask)
    {
        if (($sch.TaskName).ToLower() -like "*custom*")
        {
            $dte = Get-Date;
            $cutoff = [DateTime]$dte.AddHours(-3);
 
            $dimensions = @();
 
            $serviceDimension = New-Object -TypeName Amazon.CloudWatch.Model.Dimension;
            $serviceDimension.Name = "Service"
            $serviceDimension.Value = $sch.TaskName;  
 
            $dimensions += $instanceDimension;
            $dimensions += $serviceDimension;
 
            $metric = New-Object -TypeName Amazon.CloudWatch.Model.MetricDatum;
            $metric.Timestamp = [DateTime]::UtcNow;
            $metric.MetricName = 'Status';
 
            $status = 1;
 
            if ([DateTime]$sch."Last Run Time" -lt $cutoff) 
            {
                $status = 0;
            }
 
            $metric.Value = $status;
            $metric.Dimensions = $dimensions;
 
            $metrics += $metric;
            PushMetrics;
        }
    }
}