<#
.SYNOPSIS 
This script will connect to vSphere through PowerCLI and using PowerShell, it will return information about the alerts:

        Will Return Something Like This!
        CRITICAL! Acknowledged Alarms > Total: 4 | Acknowledged: 3 | Unacknowledged: 1
        WARNING! Acknowledged Alarms: Total: 4 | Acknowledged: 4 | Unacknowledged: 0
        OK! Acknowledged Alarms: Total: 0 | Acknowledged: 0 | Unacknowledged: 0

.NOTES
     Author     : Pedro Simões <pedro#mirandasimoes.eu>
.LINK
     http://blog.mirandasimoes.eu

.PARAMETER Server
    Server Full Address or Machine Name

.PARAMETER CredentialFilePath
    Path For Credential File Generated by Function New-VICredentialStoreItem
    a Password file can be Generated By » New-VICredentialStoreItem -Host $VIServer -User $user -Password $password -File $CredentialFilePath

.EXAMPLE
   .\check_vmware_triggeredalarms.ps1 -Server VCENTER

.EXAMPLE
   .\check_vmware_triggeredalarms.ps1 -Server VCENTER -CredentialFilePath .\nagios.monitor.xml

#>

param (
	[String] $Server,
    [String] $CredentialFilePath,
    [String] $User,
    [String] $Password
)
<#
if ( !(Get-Module -Name VMware.VimAutomation.Core -ErrorAction SilentlyContinue) ) {
    if (Test-Path -Path 'Registry::HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\VMware, Inc.\VMware vSphere PowerCLI' ) {
        $Regkey = 'Registry::HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\VMware, Inc.\VMware vSphere PowerCLI'
       
    } else {
        $Regkey = 'Registry::HKEY_LOCAL_MACHINE\SOFTWARE\VMware, Inc.\VMware vSphere PowerCLI'
    }
    . (join-path -path (Get-ItemProperty  $Regkey).InstallPath -childpath 'Scripts\Initialize-PowerCLIEnvironment.ps1')
}
if ( !(Get-Module -Name VMware.VimAutomation.Core -ErrorAction SilentlyContinue) ) {
    Write-Host "VMware modules not loaded/unable to load"
    Exit 99
}


Get-Module -Name VMware* -ListAvailable | Import-Module
#>
Import-Module VMware.VimAutomation.Core

if ($CredentialFilePath) {
    $CredentialFilePath = $CredentialFilePath -replace "`n","" -replace "\""","" # Fix for NCPA
    $cred = Get-VICredentialStoreItem -Host $Server -File $CredentialFilePath -ErrorAction stop
    $vc = Connect-VIServer -Server $Server -User $cred.User -Password $cred.Password  -ErrorAction stop
}elseif ( $User -ne $null -and $Password -ne $null ) {
    $vc = Connect-VIServer -Server $Server -User $User -Password $Password  -ErrorAction stop
}
else {
    $vc = Connect-VIServer $Server
}

 
if (!$vc) {
    Write-Output "Failure connecting to the vCenter $Server."
    exit 3
}
$rootFolder = Get-Folder -Server $vc "Datacenters"


#$rootFolder.ExtensionData.TriggeredAlarmState|FL

$countTotalAlarms = $rootFolder.ExtensionData.TriggeredAlarmState |measure
$countAcknowledgedAlarms = $rootFolder.ExtensionData.TriggeredAlarmState|Where-Object {$_.Acknowledged -eq $true} |measure
$countUnacknowledgedAlarms = $rootFolder.ExtensionData.TriggeredAlarmState|Where-Object {$_.Acknowledged -ne $true} |measure
$RT = 3 #UNKNOWN
if ( $countUnacknowledgedAlarms.Count -gt 0 ) 
{
    #RT CRITICAL
    Write-Host "CRITICAL! vCenter Alarms > Total: $($countTotalAlarms.Count) # Acknowledged: $($countAcknowledgedAlarms.Count) # Unacknowledged: $($countUnacknowledgedAlarms.Count) " 
    $rt = 2
}

if ($countTotalAlarms.Count -gt 0 -and $countUnacknowledgedAlarms.Count -eq 0) 
{
    #RT WARNING
    Write-Host "WARNING! vCenter Alarms > Total: $($countTotalAlarms.Count) # Acknowledged: $($countAcknowledgedAlarms.Count) # Unacknowledged: $($countUnacknowledgedAlarms.Count) " 
    $rt = 1
}

if ($countTotalAlarms.Count -eq 0 ) 
{
    #RT OK
    Write-Host "OK! vCenter Alarms > Total: $($countTotalAlarms.Count) # Acknowledged: $($countAcknowledgedAlarms.Count) # Unacknowledged: $($countUnacknowledgedAlarms.Count) " 
    $rt = 0
}

#Write-Verbose -Verbose $countTotalAlarms.Count

Disconnect-VIServer $Server -Confirm:$false
exit $rt