vCenter VAMI Health for Influx API

Get-VamiHeatlth.ps1

# External References
## https://github.com/rumart/vSpherePerfData/blob/master/vcsa/appliance_health.ps1

# Config
$vCenter = "<vCenter FQDN>"
$Metrics = "applmgmt","database-storage","load","mem","software-packages","storage","swap","system"
[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12

# Create Credentials
#$Credentials = Get-Credential -Message "Vami Crendetials"
#$Credentials | Export-CliXml -Path "$($env:USERPROFILE)\VamiCred.xml"

# Load Credentials
$Credentials = Import-CliXml -Path "$($env:USERPROFILE)\VamiCred.xml"
$UserName = $Credentials.UserName
$Password = $Credentials.GetNetworkCredential().Password

# Function for generating correct timestamp for influx input
function Get-DBTimestamp($timestamp = (get-date)){
    if($timestamp -is [system.string]){
        $timestamp = [datetime]::ParseExact($timestamp,'dd.MM.yyyy HH:mm:ss',$null)
    }
    return $([long][double]::Parse((get-date $($timestamp).ToUniversalTime() -UFormat %s)) * 1000 * 1000 * 1000)
}

# RestAPI Calls
$BaseUri = "https://$vcenter/rest/"
$SessionUri = $BaseUri + "com/vmware/cis/session"

## Connect
$auth = [System.Convert]::ToBase64String([System.Text.Encoding]::UTF8.GetBytes($UserName + ':' + $Password))
Remove-Variable UserName, Password, Credentials
$header = @{
  'Authorization' = "Basic $auth"
}
try {
    $Token = Invoke-RestMethod -Method Post -Headers $header -Uri $SessionUri -ErrorAction Stop
}
catch {
    Write-Host "StatusCode:" $_.Exception.Response.StatusCode.value__
    Exit
}
$SessionHeader =  @{'vmware-api-session-id' = $($Token.Value)}

## Get Health
$LastCheckUri = $BaseUri + "appliance/health/system/lastcheck"
$LastCheckResponse = Invoke-RestMethod -Method Get -Headers $SessionHeader -Uri $LastCheckUri

$Result = @()

foreach($Check in $Metrics){

    $uri = $BaseUri + "appliance/health/$Check"

    $response = Invoke-RestMethod -Method Get -Headers $sessionheader -Uri $uri

    $value = $response.value

    switch($value){
        "green" {$val = 0}
        "orange" {$val = 1}
        "red"  {$val = 2}
        "gray"  {$val = 9}
        "unknown" {$val = 9}
        default {$val = 9}
    }

    $timestamp = Get-DBTimestamp (get-date $LastCheckResponse.value)
    $measurement = "health_$Check"
    $Result += "$measurement,server=$vcenter text=""$value"",value=$val $timestamp"

}
$Result
# Post data to Influx API
#$postUri = "http://$influxServer" + ":$influxPort/write?db=$database"
#Invoke-RestMethod -Method Post -Uri $postUri -Body ($tbl -join "`n")