This script can be used as a wrapper around making REST API calls in TeamCity. http://evsoftware.co.uk

rest-api-wrapper.ps1

# -----------------------------------------------
# REST API Wrapper
# -----------------------------------------------
#
# Ver   Who                   When      What
# 1.0   Evolve Software Ltd   11-08-16  Initial Version

# Script Input Parameters
param (
    [ValidateNotNullOrEmpty()]
    [string] $RestEndPoint = $(throw "-RestEndPoint is mandatory, please provide a value."),
    [ValidateNotNullOrEmpty()]
    [string] $ApiUsername = $(throw "-ApiUsername is mandatory, please provide a value."),
    [ValidateNotNullOrEmpty()]
    [string] $ApiPassword = $(throw "-ApiPassword is mandatory, please provide a value."),
    [ValidateNotNullOrEmpty()]
    [string] $HttpVerb = $(throw "-HttpVerb is mandatory, please provide a value."),
    [string] $RestData = "",
    [string] $ContentType = "text/plain"
)

function Main() 
{
    $CurrentScriptVersion = "1.0"
    $ApiCredentials = New-Object System.Management.Automation.PSCredential($ApiUsername, (ConvertTo-SecureString $ApiPassword -AsPlainText -Force))

    $ApiCredentials_ForHeader = $ApiUsername + ":" + $ApiPassword
    $ApiCredentialsBase64 = [System.Convert]::ToBase64String([System.Text.Encoding]::UTF8.GetBytes($ApiCredentials_ForHeader))

    $ApiCredentialsHeader = @{};
    $ApiCredentialsHeader.Add("Authorization", "Basic $ApiCredentialsBase64")

    Write-Host "================== REST API Wrapper - Version"$CurrentScriptVersion": START =================="

    # Log input variables passed in
    Log-Variables
    Write-Host

    $success = $false;
    $attemptsLeft = 3;

    do {
        try {
            switch ($HttpVerb)
            {
                "GET" { Api-Get $RestEndPoint }
                "DELETE" { Api-Delete $RestEndPoint }
                "POST" { Api-Post $RestEndPoint $RestData $ContentType }
                "PUT" { Api-Put $RestEndPoint $RestData $ContentType }
            }
            $success = $true
        } 
        catch [System.Exception] {
            Write-Output $_
            Start-Sleep -Milliseconds 10000
        }
        $attemptsLeft--;
    } 
    while (-not $success -and $attemptsLeft -gt 0)

    if (-not $success) {
        Write-Output "Unable to call rest API: $RestEndPoint"
        Write-Output ##teamcity[buildStatus status='FAILURE' ]
        Exit 1
    }   

    Write-Host "================== REST API Wrapper - Version"$CurrentScriptVersion": END =================="
}

function Log-Variables
{
    Write-Host "RestEndPoint: " $RestEndPoint
    Write-Host "HttpVerb: " $HttpVerb
    Write-Host "RestData: " $RestData
    Write-Host "Computername:" (gc env:computername)
}

function Api-Get($Url)
{
    Write-Host $Url
    return Invoke-RestMethod -Headers $ApiCredentialsHeader -Credential $ApiCredentials -Uri $Url -Method Get -TimeoutSec 30;
}

function Api-Delete($Url)
{
    Write-Host $Url
    return Invoke-WebRequest -Headers $ApiCredentialsHeader -Credential $ApiCredentials -Uri $Url -Method Delete -TimeoutSec 30 -UseBasicParsing;
}

function Api-Post($Url, $Data, $Type)
{
    Write-Host $Url
    return Invoke-RestMethod -Headers $ApiCredentialsHeader -Credential $ApiCredentials -Uri $Url -Method Post -ContentType $Type -Body $Data -TimeoutSec 30 -DisableKeepAlive;
}

function Api-Put($Url, $Data, $Type)
{
    Write-Host $Url
    return Invoke-RestMethod -Headers $ApiCredentialsHeader -Credential $ApiCredentials -Uri $Url -Method Put -ContentType $Type -Body $Data -TimeoutSec 30 -DisableKeepAlive;
}

Main