functions/azure/azcli/Invoke-AzCli.ps1
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# <copyright file="Invoke-AzCli.ps1" company="Endjin Limited"> # Copyright (c) Endjin Limited. All rights reserved. # </copyright> <# .SYNOPSIS Invokes azure-cli commands and returns the results. .DESCRIPTION Provides a wrapper for invokes an azure-cli commands. .PARAMETER Command The azure-cli command you want to execute, excluding the 'az' reference. .PARAMETER AsJson Controls whether you expect the command to have a JSON response that you want returned as output. .PARAMETER ExpectedExitCodes An array of exit codes that will not be treated as signifying an error. .OUTPUTS When the '-AsJson' parameter is supplied, the JSON output from azure-cli will be returned as a hashtable. #> function Invoke-AzCli { [CmdletBinding()] param ( [Parameter(Mandatory=$true)] $Command, [switch] $AsJson, [array] $ExpectedExitCodes = @(0) ) # If passed an array of command arguments, concatenate them into single comnmand-line string if ($Command -is [array]) { $Command = ($Command -join " ") } $cmd = "az $Command" if ($asJson) { $cmd = "$cmd -o json" } Write-Verbose "azcli cmd: $cmd" $ErrorActionPreference = 'Continue' # azure-cli can sometimes write warnings to STDERR, which PowerShell treats as an error # Execute the azure-cli and capture the results and any StdErr output $res,$azCliStdErr = _invokeAzCli $cmd $diagnosticInfo = @" StdOut: $($res -join "`n") StdErr: $($azCliStdErr -join "`n") "@ $ErrorActionPreference = 'Stop' if ($expectedExitCodes -inotcontains $LASTEXITCODE) { Write-Warning "azure-cli error diagnostic information:`nCommand: $cmd`n$diagnosticInfo" Write-Error "azure-cli failed with exit code: $LASTEXITCODE - check previous logs for more details" } Write-Verbose $diagnosticInfo if ($asJson) { return ($res | ConvertFrom-Json -Depth 30 -AsHashtable) } return $res,$azCliStdErr } # Extract function for mocking purposes function _invokeAzCli { [CmdletBinding()] param ( [Parameter(Mandatory=$true)] [string] $CommandLine ) # Capture any error messages so they can be properly logged # NOTE: '-ErrorVariable' on Invoke-Expression seems only to work properly if the command-line contains some STDERR redirection, # otherwise the error variable is always null. $output = Invoke-Expression "$CommandLine 2>''" -ErrorVariable stdErr return $output,$stdErr } |