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CloudFormation.ps1
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CloudFormation.ps1
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# This allows you work on the file as a script
$_privateCommand = Get-Command -Name "__MakeWildcard" -ErrorAction Continue
if (!$_privateCommand) {
. "$PSScriptRoot\QuotePrivateUnquoteFunctions.ps1"
}
#region Private things
$_cfResourceTypes = @{
"S3Bucket" = "AWS::S3::Bucket"
}
$_cfStackStatuses = @{
"CREATE_IN_PROGRESS" = @{ "Active" = $true; "Failed" = $false; "InFlux" = $true };
"CREATE_COMPLETE" = @{ "Active" = $true; "Failed" = $false; "InFlux" = $false };
"CREATE_FAILED" = @{ "Active" = $true; "Failed" = $true; "InFlux" = $false };
"ROLLBACK_IN_PROGRESS" = @{ "Active" = $true; "Failed" = $true; "InFlux" = $true };
"ROLLBACK_FAILED" = @{ "Active" = $true; "Failed" = $true; "InFlux" = $false };
"ROLLBACK_COMPLETE" = @{ "Active" = $true; "Failed" = $true; "InFlux" = $false };
"DELETE_IN_PROGRESS" = @{ "Active" = $true; "Failed" = $false; "InFlux" = $true };
"DELETE_FAILED" = @{ "Active" = $true; "Failed" = $true; "InFlux" = $false };
"DELETE_COMPLETE" = @{ "Active" = $false; "Failed" = $false; "InFlux" = $false };
"UPDATE_IN_PROGRESS" = @{ "Active" = $true; "Failed" = $false; "InFlux" = $true };
"UPDATE_COMPLETE_CLEANUP_IN_PROGRESS" = @{ "Active" = $true; "Failed" = $false; "InFlux" = $true };
"UPDATE_COMPLETE" = @{ "Active" = $true; "Failed" = $false; "InFlux" = $false };
"UPDATE_ROLLBACK_IN_PROGRESS" = @{ "Active" = $true; "Failed" = $true; "InFlux" = $true };
"UPDATE_ROLLBACK_FAILED" = @{ "Active" = $true; "Failed" = $true; "InFlux" = $false };
"UPDATE_ROLLBACK_COMPLETE_CLEANUP_IN_PROGRESS" = @{ "Active" = $true; "Failed" = $true; "InFlux" = $true };
"UPDATE_ROLLBACK_COMPLETE" = @{ "Active" = $true; "Failed" = $true; "InFlux" = $false };
}
function __StackStatusMap([string]$StackStatus) {
if(!$_cfStackStatuses.ContainsKey($StackStatus)) {
throw "$StackStatus is not a recognized stack status."
}
$_cfStackStatuses[$StackStatus]
}
function __IsStackActive([string]$StackStatus) {
$_map = __StackStatusMap($StackStatus)
$_map["Active"]
}
function __IsStackFailed([string]$StackStatus) {
$_map = __StackStatusMap($StackStatus)
$_map["Failed"]
}
#endregion
function Remove-CFStack {
[CmdletBinding()]
param(
[Parameter(Mandatory=$true, ParameterSetName = "ByStackSummary", ValueFromPipeline = $true)]
[Amazon.CloudFormation.Model.StackSummary]$StackSummary,
[Parameter(Mandatory=$true, ParameterSetName = "ByName", ValueFromPipeline = $true)]
[string]$StackName,
[switch]$SkipConfirmation,
[Amazon.Runtime.AWSCredentials]$Credentials,
[string]$Region
)
BEGIN {
if ($Credentials) {
$_creds = $Credentials
}
else {
$_creds = Get-AwsCredentials
}
$_region = __RegionFromName $Region
$_cfClient = [Amazon.AWSClientFactory]::CreateAmazonCloudFormationClient($_creds, $_region)
}
PROCESS {
$_stackName = $StackName
if ($StackSummary) {
Write-Debug "Using stack summary to get name"
$_stackName = $StackSummary | Select-Object -ExpandProperty StackName
}
if (!$SkipConfirmation) {
Write-Host "You are about to remove a CloudFormation stack, which is potentially very, very bad." `
-ForegroundColor White `
-BackgroundColor Red
Write-Host "Please confirm you want the stack removed by typing the stack name exactly." `
-ForegroundColor White `
-BackgroundColor Red
$_confirmed = Read-Host "Stack Name"
if ($_confirmed -cne $_stackName) {
throw "Confirmation did not match stack name!"
}
}
$_req = New-Object Amazon.CloudFormation.Model.DeleteStackRequest
$_req.StackName = $_stackName
$_cfClient.DeleteStack($_req) | Out-Null
}
END {}
}
function Get-CFStackResources {
[CmdletBinding()]
param(
[Parameter(Mandatory=$true, ParameterSetName = "ByStackSummary", ValueFromPipeline = $true)]
[Amazon.CloudFormation.Model.StackSummary]$StackSummary,
[Parameter(Mandatory=$true, ParameterSetName = "ByName", ValueFromPipeline = $true)]
[string]$StackName,
[string]$LogicalId,
[string]$ResourceType,
[string]$ResourceStatus,
[Amazon.Runtime.AWSCredentials]$Credentials,
[string]$Region
)
BEGIN {
if ($Credentials) {
$_creds = $Credentials
}
else {
$_creds = Get-AwsCredentials
}
$_region = __RegionFromName $Region
$_cfClient = [Amazon.AWSClientFactory]::CreateAmazonCloudFormationClient($_creds, $_region)
}
PROCESS {
$_stackName = $StackName
if ($StackSummary) {
Write-Debug "Using stack summary to get name"
$_stackName = $StackSummary | Select-Object -ExpandProperty StackName
}
$_req = New-Object Amazon.CloudFormation.Model.ListStackResourcesRequest
$_req.StackName = $_stackName
$_resp = $_cfClient.ListStackResources($_req)
$_logicalWildcard = __MakeWildcard($LogicalId)
$_typeWildcard = __MakeWildcard($ResourceType)
$_statusWildcard = __MakeWildcard($ResourceStatus)
$_resp.ListStackResourcesResult.StackResourceSummaries `
| Where-Object {
$_logicalWildcard.IsMatch($_.LogicalResourceId)
} `
| Where-Object {
$_typeWildcard.IsMatch($_.ResourceType)
} `
| Where-Object {
$_statusWildcard.IsMatch($_.ResourceStatus)
}
}
END {}
}
function Get-CFStacks {
[CmdletBinding()]
param(
[string]$Name,
[string]$ExactName,
[switch]$IncludeInactive,
[Amazon.Runtime.AWSCredentials]$Credentials,
[string]$Region
)
if ($Credentials) {
$_creds = $Credentials
}
else {
$_creds = Get-AwsCredentials
}
$_region = __RegionFromName $Region
$_cfClient = [Amazon.AWSClientFactory]::CreateAmazonCloudFormationClient($_creds, $_region)
$_req = New-Object -TypeName Amazon.CloudFormation.Model.ListStacksRequest
$_resp = $_cfClient.ListStacks($_req)
$_nameWildcard = __MakeWildcard($Name)
$_resp.ListStacksResult.StackSummaries `
| Where-Object {
if ($IncludeInactive) {
$true
}
else {
__IsStackActive($_.StackStatus)
}
} `
| Where-Object {
!$ExactName -or ($ExactName -eq $_.StackName)
} `
| Where-Object {
$_nameWildcard.IsMatch($_.StackName)
}
}
function Test-CFTemplate {
[CmdletBinding()]
param(
[Parameter(Mandatory=$true)]
[string]$TemplatePath,
[Amazon.Runtime.AWSCredentials]$Credentials,
[string]$Region
)
$_region = __RegionFromName($Region)
Write-Verbose "Validating $TemplatePath ..."
if (!(Test-Path $TemplatePath)) {
throw "Template not found at $TemplatePath!"
}
if ($Credentials) {
$_creds = $Credentials
}
else {
$_creds = Get-AwsCredentials
}
$_templateBody = Get-Content $TemplatePath
$_cfClient = [Amazon.AWSClientFactory]::CreateAmazonCloudFormationClient($_creds, $_region)
$_req = New-Object Amazon.CloudFormation.Model.ValidateTemplateRequest
$_req.TemplateBody = $_templateBody
$_cfClient.ValidateTemplate($_req) `
| Select-Object -ExpandProperty ValidateTemplateResult `
| Select-Object -Property Capabilities, Parameters
}
function Set-CFStack {
[CmdletBinding()]
param(
[Parameter(Mandatory=$true)]
[string]$Name,
[Parameter(Mandatory=$true)]
[string]$TemplatePath,
[switch]$Force,
[string]$TemplateParametersPath,
[hashtable]$TemplateParameters = @{},
# Leaving this here for backwards compatibility.
[hashtable]$TemplateParams = @{},
[ValidateSet("None", "Required", "All", IgnoreCase = $true)]
[string]$PromptForParameters = "None",
[Amazon.Runtime.AWSCredentials]$Credentials,
[string]$Region,
[switch]$WhatIf
)
if (!(Test-Path $TemplatePath)) {
throw "Template not found at $TemplatePath!"
}
if ($Credentials) {
$_creds = $Credentials
}
else {
$_creds = Get-AwsCredentials
}
$_region = __RegionFromName($Region)
$_templateBody = Get-Content $TemplatePath
$_cfClient = [Amazon.AWSClientFactory]::CreateAmazonCloudFormationClient($_creds, $_region)
$_alreadyExists = Get-CFStacks -ExactName $Name -Credentials $_creds
if ($_alreadyExists -and -not $Force) {
throw "Stack '$Name' already exists. Use -Force to update an existing stack."
}
$_testedTemplate = Test-CFTemplate -TemplatePath $TemplatePath -Credentials $_creds -Region $Region
$_capabilities = $_testedTemplate.Capabilities
$_foundParameters = $_testedTemplate.Parameters
# Get parameters specified in $TemplateParameterFile
$_parametersFromFile = @{}
if ($TemplateParametersPath) {
if (!(Test-Path $TemplateParametersPath)) {
throw "Could not find TemplateParameterFile at $TemplateParametersPath"
}
$_parametersFromFile = Get-Content $TemplateParametersPath -Raw `
| ConvertFrom-Json `
| ConvertTo-Hashtable -TreatFalseyAsEmpty
}
# Get parameters passed in hashtable
[hashtable]$_parameters = $_parametersFromFile `
| Merge-Objects -AdditionalValues $TemplateParameters `
| Merge-Objects -AdditionalValues $TemplateParams -OutputType Hashtable
# PS and generic lists. Whee.
$_parameterType = [Amazon.CloudFormation.Model.Parameter]
$_parameterListType = [System.Collections.Generic.List``1].MakeGenericType(@($_parameterType))
$_parameterList = [Activator]::CreateInstance($_parameterListType)
$_foundParameters | ForEach-Object {
$_currentKey = $_.ParameterKey
$_currentValue = $null
if ($_.DefaultValue) {
$_currentValue = $_.DefaultValue
}
if ($_parameters.ContainsKey($_currentKey)) {
$_currentValue = $_parameters[$_currentKey]
}
if (($PromptForParameters -eq "All") -or (!$_currentValue -and ($PromptForParameters -eq "Required"))) {
$_defaultPrompt = $_currentValue
if (!$_defaultPrompt) {
$_defaultPrompt = "<No Value>"
}
$_promptValue = Read-Host "Value for parameter '$_currentKey' [$_defaultPrompt]"
if ($_promptValue) {
$_currentValue = $_promptValue
}
}
$_currParam = New-Object -TypeName Amazon.CloudFormation.Model.Parameter
$_currParam.ParameterKey = $_currentKey
$_currParam.ParameterValue = $_currentValue
$_parameterList.Add($_currParam)
Write-Verbose "Setting parameter '$_currentKey' to '$_currentValue'."
}
if ($WhatIf) {
$_action = "created"
if ($_alreadyExists) {
$_action = "updated"
}
Write-Host "$Name would have been $_action." -ForegroundColor White -BackgroundColor DarkGreen
Write-Host "The following parameter values would have been used." -ForegroundColor White -BackgroundColor DarkGreen
$_parameterList | Format-Table
Write-Host "The following capabilities would have been used." -ForegroundColor White -BackgroundColor DarkGreen
$_capabilities | Format-List
}
elseif ($_alreadyExists) {
Write-Verbose "Updating stack $Name ..."
$_updateRequest = New-Object -TypeName Amazon.CloudFormation.Model.UpdateStackRequest
$_updateRequest.Capabilities = $_capabilities
$_updateRequest.StackName = $Name
$_updateRequest.TemplateBody = $_templateBody
$_updateRequest.Parameters = $_parameterList
$_updateResponse = $_cfClient.UpdateStack($_updateRequest)
$_stackId = $_updateResponse.UpdateStackResult.StackId
Write-Verbose "Updated $_stackId"
} else {
Write-Verbose "Creating stack $Name ..."
$_createRequest = New-Object -TypeName Amazon.CloudFormation.Model.CreateStackRequest
$_createRequest.Capabilities = $_capabilities
$_createRequest.StackName = $Name
$_createRequest.TemplateBody = $_templateBody
$_createRequest.Parameters = $_parameterList
$_createResponse = $_cfClient.CreateStack($_createRequest)
$_stackId = $_createResponse.CreateStackResult.StackId
Write-Verbose "Created $_stackId"
}
}
function Get-CFStackOutputs {
[CmdletBinding()]
param(
[Parameter(Mandatory = $true, ParameterSetName = "BySummary", ValueFromPipeline = $true)]
[Amazon.CloudFormation.Model.StackSummary]$StackSummary,
[Parameter(Mandatory = $true, ParameterSetName = "ByName", ValueFromPipeline = $true)]
[string]$StackName,
[string]$Key,
[Amazon.Runtime.AWSCredentials]$Credentials,
[string]$Region
)
$_region = __RegionFromName($Region)
if ($Credentials) {
$_creds = $Credentials
}
else {
$_creds = Get-AwsCredentials
}
$_stackName = $StackName
if ($StackSummary) {
Write-Debug "Using stack summary to get name"
$_stackName = $StackSummary | Select-Object -ExpandProperty StackName
}
$_cfClient = [Amazon.AWSClientFactory]::CreateAmazonCloudFormationClient($_creds, $_region)
$_outputReq = New-Object -TypeName Amazon.CloudFormation.Model.DescribeStacksRequest
$_outputReq.StackName = $_stackName
[Amazon.CloudFormation.Model.Stack]$_stack = `
$_cfClient.DescribeStacks($_outputReq).DescribeStacksResult.Stacks `
| Select-Object -First 1
if (!$_stack) {
throw "Stack $Name not found."
}
$_keyWildcard = __MakeWildcard($Key)
$_stack.Outputs | Where-Object { $_keyWildcard.IsMatch($_.OutputKey) }
}