CfnIntrinsicConditionFunctions.ps1
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function Use-CfnAndCondition { <# .SYNOPSIS Returns true if all the specified conditions evaluate to true, or returns false if any one of the conditions evaluates to false. Fn::And acts as an AND operator. The minimum number of conditions that you can include is 2, and the maximum is 10. .LINK http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/intrinsic-function-reference-conditions.html#d0e103666 #> param( [Parameter(Mandatory,Position=0)] [ValidateCount(2, 10)] [array]$Conditions=@() ) return @{ "Fn::And" = $Conditions } } Set-Alias -Name Fn-And -Value Use-CfnAndCondition function Use-CfnEqualsCondition { <# .SYNOPSIS Compares if two values are equal. Returns true if the two values are equal or false if they aren't. .LINK http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/intrinsic-function-reference-conditions.html#d0e103748 #> param( [Parameter(Mandatory,Position=0)] [object]$LValue, [Parameter(Mandatory,Position=1)] [object]$RValue ) return @{ "Fn::Equals" = @( $LValue, $RValue ) } } Set-Alias -Name Fn-Equals -Value Use-CfnEqualsCondition function Use-CfnIfCondition { <# .SYNOPSIS Returns one value if the specified condition evaluates to true and another value if the specified condition evaluates to false. .DESCRIPTION Currently, AWS CloudFormation supports the Fn::If intrinsic function in the metadata attribute, update policy attribute, and property values in the Resources section and Outputs sections of a template. You can use the AWS::NoValue pseudo parameter as a return value to remove the corresponding property. .LINK http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/intrinsic-function-reference-conditions.html#d0e103823 #> param( [Parameter(Mandatory,Position=0)] [object]$ConditionName, [Parameter(Mandatory,Position=1)] [object]$IfTrue, [Parameter(Mandatory,Position=2)] [object]$IfFalse ) return @{ "Fn::If" = @( $ConditionName, $IfTrue, $IfFalse ) } } Set-Alias -Name Fn-If -Value Use-CfnIfCondition function Use-CfnNotCondition { <# .SYNOPSIS Returns true for a condition that evaluates to false or returns false for a condition that evaluates to true. Fn::Not acts as a NOT operator. .LINK http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/intrinsic-function-reference-conditions.html#d0e104002 #> param( [Parameter(Mandatory,Position=0)] [object]$Condition ) return @{ "Fn::Not" = @( $Condition ) } } Set-Alias -Name Fn-Not -Value Use-CfnNotCondition function Use-CfnOrCondition { <# .SYNOPSIS Returns true if any one of the specified conditions evaluate to true, or returns false if all of the conditions evaluates to false. Fn::Or acts as an OR operator. The minimum number of conditions that you can include is 2, and the maximum is 10. .LINK http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/intrinsic-function-reference-conditions.html#d0e104090 #> param( [Parameter(Mandatory,Position=0)] [ValidateCount(2, 10)] [array]$Conditions=@() ) return @{ "Fn::Or" = $Conditions } } Set-Alias -Name Fn-Or -Value Use-CfnOrCondition function Use-CfnCondition { <# .SYNOPSIS Returns a reference to another named Condition. .LINK http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/intrinsic-function-reference-conditions.html #> param( [Parameter(Mandatory,Position=0)] [string]$ConditionName ) return @{ "Condition" = $ConditionName } } Set-Alias -Name Fn-Condition -Value Use-CfnCondition |