VaporShell.Logs.psm1

# PSM1 Contents
function Format-Json {
    [CmdletBinding()]
    Param (
        [Parameter(Mandatory = $true, Position = 0, ValueFromPipeline = $true)]
        [String]
        $Json
    )
    Begin {
        $cleaner = {
            param([String]$Line)
            Process{
                [Regex]::Replace(
                    $Line,
                    "\\u(?<Value>[a-zA-Z0-9]{4})",
                    {
                        param($m)([char]([int]::Parse(
                            $m.Groups['Value'].Value,
                            [System.Globalization.NumberStyles]::HexNumber
                        ))).ToString()
                    }
                )
            }
        }
    }
    Process {
        if ($PSVersionTable.PSVersion.Major -lt 6) {
            try {
                $indent = 0;
                $res = $Json -split '\n' | ForEach-Object {
                    if ($_ -match '[\}\]]') {
                        # This line contains ] or }, decrement the indentation level
                        $indent--
                    }
                    $line = (' ' * $indent * 2) + $_.TrimStart().Replace(': ', ': ')
                    if ($_ -match '[\{\[]') {
                        # This line contains [ or {, increment the indentation level
                        $indent++
                    }
                    $cleaner.Invoke($line)
                }
                $res -join "`n"
            }
            catch {
                ($Json -split '\n' | ForEach-Object {$cleaner.Invoke($_)}) -join "`n"
            }
        }
        else {
            ($Json -split '\n' | ForEach-Object {$cleaner.Invoke($_)}) -join "`n"
        }
    }
}

function Get-TrueCount {
    Param
    (
        [parameter(Mandatory = $false,Position = 0,ValueFromPipeline = $true)]
        $Array
    )
    Process {
        if ($array) {
            if ($array.Count) {
                $count = $array.Count
            }
            else {
                $count = 1
            }
        }
        else {
            $count = 0
        }
    }
    End {
        return $count
    }
}

function New-VSError {
    <#
    .SYNOPSIS
    Error generator function to use in tandem with $PSCmdlet.ThrowTerminatingError()
    
    .PARAMETER Result
    Allows input of an error from AWS SDK, resulting in the Exception message being parsed out.
    
    .PARAMETER String
    Used to create basic String message errors in the same wrapper
    #>

    [cmdletbinding(DefaultParameterSetName="Result")]
    param(
        [parameter(Position=0,ParameterSetName="Result")]
        $Result,
        [parameter(Position=0,ParameterSetName="String")]
        $String
    )
    switch ($PSCmdlet.ParameterSetName) {
        Result { $Exception = "$($result.Exception.InnerException.Message)" }
        String { $Exception = "$String" }
    }
    $e = New-Object "System.Exception" $Exception
    $errorRecord = New-Object 'System.Management.Automation.ErrorRecord' $e, $null, ([System.Management.Automation.ErrorCategory]::InvalidOperation), $null
    return $errorRecord
}

function ResolveS3Endpoint {
    <#
    .SYNOPSIS
    Resolves the S3 endpoint most appropriate for each region.
    #>

    Param
    (
      [parameter(Mandatory=$true,Position=0)]
      [ValidateSet("eu-west-2","ap-south-1","us-east-2","sa-east-1","us-west-1","us-west-2","eu-west-1","ap-southeast-2","ca-central-1","ap-northeast-2","us-east-1","eu-central-1","ap-southeast-1","ap-northeast-1")]
      [String]
      $Region
    )
    $endpointMap = @{
        "us-east-2" = "s3.us-east-2.amazonaws.com"
        "us-east-1" = "s3.amazonaws.com"
        "us-west-1" = "s3-us-west-1.amazonaws.com"
        "us-west-2" = "s3-us-west-2.amazonaws.com"
        "ca-central-1" = "s3.ca-central-1.amazonaws.com"
        "ap-south-1" = "s3.ap-south-1.amazonaws.com"
        "ap-northeast-2" = "s3.ap-northeast-2.amazonaws.com"
        "ap-southeast-1" = "s3-ap-southeast-1.amazonaws.com"
        "ap-southeast-2" = "s3-ap-southeast-2.amazonaws.com"
        "ap-northeast-1" = "s3-ap-northeast-1.amazonaws.com"
        "eu-central-1" = "s3.eu-central-1.amazonaws.com"
        "eu-west-1" = "s3-eu-west-1.amazonaws.com"
        "eu-west-2" = "s3.eu-west-2.amazonaws.com"
        "sa-east-1" = "s3-sa-east-1.amazonaws.com"
    }
    return $endpointMap[$Region]
}

function Add-VSLogsMetricFilterMetricTransformation {
    <#
    .SYNOPSIS
        Adds an AWS::Logs::MetricFilter.MetricTransformation resource property to the template. MetricTransformation is a property of the AWS::Logs::MetricFilter resource that describes how to transform log streams into a CloudWatch metric.

    .DESCRIPTION
        Adds an AWS::Logs::MetricFilter.MetricTransformation resource property to the template.
MetricTransformation is a property of the AWS::Logs::MetricFilter resource that describes how to transform log streams into a CloudWatch metric.

    .LINK
        http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-logs-metricfilter-metrictransformation.html

    .PARAMETER DefaultValue
        Optional The value to emit when a filter pattern does not match a log event. This value can be null.

        Documentation: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-logs-metricfilter-metrictransformation.html#cfn-cwl-metricfilter-metrictransformation-defaultvalue
        PrimitiveType: Double
        UpdateType: Mutable

    .PARAMETER MetricName
        The name of the CloudWatch metric.

        Documentation: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-logs-metricfilter-metrictransformation.html#cfn-cwl-metricfilter-metrictransformation-metricname
        PrimitiveType: String
        UpdateType: Mutable

    .PARAMETER MetricNamespace
        A custom namespace to contain your metric in CloudWatch. Use namespaces to group together metrics that are similar. For more information, see Namespaces: https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/cloudwatch_concepts.html#Namespace.

        Documentation: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-logs-metricfilter-metrictransformation.html#cfn-cwl-metricfilter-metrictransformation-metricnamespace
        PrimitiveType: String
        UpdateType: Mutable

    .PARAMETER MetricValue
        The value that is published to the CloudWatch metric. For example, if you're counting the occurrences of a particular term like Error, specify 1 for the metric value. If you're counting the number of bytes transferred, reference the value that is in the log event by using $ followed by the name of the field that you specified in the filter pattern, such as $size.

        Documentation: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-logs-metricfilter-metrictransformation.html#cfn-cwl-metricfilter-metrictransformation-metricvalue
        PrimitiveType: String
        UpdateType: Mutable

    .FUNCTIONALITY
        Vaporshell
    #>

    [OutputType([LogsMetricFilterMetricTransformation])]
    [cmdletbinding()]
    Param(
        [parameter(Mandatory = $false)]
        [object]
        $DefaultValue,
        [parameter(Mandatory = $true)]
        [object]
        $MetricName,
        [parameter(Mandatory = $true)]
        [object]
        $MetricNamespace,
        [parameter(Mandatory = $true)]
        [object]
        $MetricValue
    )
    Process {
        $obj = [LogsMetricFilterMetricTransformation]::new($PSBoundParameters)
        Write-Debug "$($MyInvocation.MyCommand) PSBoundParameters:`n$($PSBoundParameters | ConvertTo-Json -Depth 20 | Format-Json)"
        Write-Verbose "Resulting object from $($MyInvocation.MyCommand): `n$($obj.ToJson() | Format-Json)"
        $obj
    }
}

Export-ModuleMember -Function 'Add-VSLogsMetricFilterMetricTransformation'

function New-VSLogsDestination {
    <#
    .SYNOPSIS
        Adds an AWS::Logs::Destination resource to the template. The AWS::Logs::Destination resource specifies a CloudWatch Logs destination. A destination encapsulates a physical resource (such as an Amazon Kinesis data stream and enables you to subscribe that resource to a stream of log events.

    .DESCRIPTION
        Adds an AWS::Logs::Destination resource to the template. The AWS::Logs::Destination resource specifies a CloudWatch Logs destination. A destination encapsulates a physical resource (such as an Amazon Kinesis data stream and enables you to subscribe that resource to a stream of log events.

    .LINK
        http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-logs-destination.html

    .PARAMETER LogicalId
        The logical ID must be alphanumeric (A-Za-z0-9) and unique within the template. Use the logical name to reference the resource in other parts of the template. For example, if you want to map an Amazon Elastic Block Store volume to an Amazon EC2 instance, you reference the logical IDs to associate the block stores with the instance.

    .PARAMETER DestinationName
        The name of the destination.

        Documentation: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-logs-destination.html#cfn-logs-destination-destinationname
        PrimitiveType: String
        UpdateType: Immutable

    .PARAMETER DestinationPolicy
        An IAM policy document that governs which AWS accounts can create subscription filters against this destination.

        Documentation: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-logs-destination.html#cfn-logs-destination-destinationpolicy
        PrimitiveType: String
        UpdateType: Mutable

    .PARAMETER RoleArn
        The ARN of an IAM role that permits CloudWatch Logs to send data to the specified AWS resource.

        Documentation: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-logs-destination.html#cfn-logs-destination-rolearn
        PrimitiveType: String
        UpdateType: Mutable

    .PARAMETER TargetArn
        The Amazon Resource Name ARN of the physical target to where the log events are delivered for example, a Kinesis stream.

        Documentation: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-logs-destination.html#cfn-logs-destination-targetarn
        PrimitiveType: String
        UpdateType: Mutable

    .PARAMETER DeletionPolicy
        With the DeletionPolicy attribute you can preserve or (in some cases) backup a resource when its stack is deleted. You specify a DeletionPolicy attribute for each resource that you want to control. If a resource has no DeletionPolicy attribute, AWS CloudFormation deletes the resource by default.

        To keep a resource when its stack is deleted, specify Retain for that resource. You can use retain for any resource. For example, you can retain a nested stack, S3 bucket, or EC2 instance so that you can continue to use or modify those resources after you delete their stacks.

        You must use one of the following options: "Delete","Retain","Snapshot"

    .PARAMETER UpdateReplacePolicy
        Use the UpdateReplacePolicy attribute to retain or (in some cases) backup the existing physical instance of a resource when it is replaced during a stack update operation.

        When you initiate a stack update, AWS CloudFormation updates resources based on differences between what you submit and the stack's current template and parameters. If you update a resource property that requires that the resource be replaced, AWS CloudFormation recreates the resource during the update. Recreating the resource generates a new physical ID. AWS CloudFormation creates the replacement resource first, and then changes references from other dependent resources to point to the replacement resource. By default, AWS CloudFormation then deletes the old resource. Using the UpdateReplacePolicy, you can specify that AWS CloudFormation retain or (in some cases) create a snapshot of the old resource.

        For resources that support snapshots, such as AWS::EC2::Volume, specify Snapshot to have AWS CloudFormation create a snapshot before deleting the old resource instance.

        You can apply the UpdateReplacePolicy attribute to any resource. UpdateReplacePolicy is only executed if you update a resource property whose update behavior is specified as Replacement, thereby causing AWS CloudFormation to replace the old resource with a new one with a new physical ID. For example, if you update the Engine property of an AWS::RDS::DBInstance resource type, AWS CloudFormation creates a new resource and replaces the current DB instance resource with the new one. The UpdateReplacePolicy attribute would then dictate whether AWS CloudFormation deleted, retained, or created a snapshot of the old DB instance. The update behavior for each property of a resource is specified in the reference topic for that resource in the AWS Resource and Property Types Reference. For more information on resource update behavior, see Update Behaviors of Stack Resources.

        The UpdateReplacePolicy attribute applies to stack updates you perform directly, as well as stack updates performed using change sets.

        Note
        Resources that are retained continue to exist and continue to incur applicable charges until you delete those resources. Snapshots that are created with this policy continue to exist and continue to incur applicable charges until you delete those snapshots. UpdateReplacePolicy retains the old physical resource or snapshot, but removes it from AWS CloudFormation's scope.

        UpdateReplacePolicy differs from the DeletionPolicy attribute in that it only applies to resources replaced during stack updates. Use DeletionPolicy for resources deleted when a stack is deleted, or when the resource definition itself is deleted from the template as part of a stack update.

        You must use one of the following options: "Delete","Retain","Snapshot"

    .PARAMETER DependsOn
        With the DependsOn attribute you can specify that the creation of a specific resource follows another. When you add a DependsOn attribute to a resource, that resource is created only after the creation of the resource specified in the DependsOn attribute.

        This parameter takes a string or list of strings representing Logical IDs of resources that must be created prior to this resource being created.


    .PARAMETER Metadata
        The Metadata attribute enables you to associate structured data with a resource. By adding a Metadata attribute to a resource, you can add data in JSON or YAML to the resource declaration. In addition, you can use intrinsic functions (such as GetAtt and Ref), parameters, and pseudo parameters within the Metadata attribute to add those interpreted values.

        This will be returned when describing the resource using AWS CLI.


    .PARAMETER UpdatePolicy
        Use the UpdatePolicy attribute to specify how AWS CloudFormation handles updates to the AWS::AutoScaling::AutoScalingGroup resource. AWS CloudFormation invokes one of three update policies depending on the type of change you make or whether a scheduled action is associated with the Auto Scaling group.

        You must use the "Add-UpdatePolicy" function or the [UpdatePolicy] class here.
    .PARAMETER Condition
        Logical ID of the condition that this resource needs to be true in order for this resource to be provisioned.

    .FUNCTIONALITY
        Vaporshell
    #>

    [OutputType([LogsDestination])]
    [cmdletbinding()]
    Param(
        [parameter(Mandatory = $true,Position = 0)]
        [ValidateLogicalId()]
        [string]
        $LogicalId,
        [parameter(Mandatory = $true)]
        [object]
        $DestinationName,
        [parameter(Mandatory = $true)]
        [object]
        $DestinationPolicy,
        [parameter(Mandatory = $true)]
        [object]
        $RoleArn,
        [parameter(Mandatory = $true)]
        [object]
        $TargetArn,
        [parameter()]
        [DeletionPolicy]
        $DeletionPolicy,
        [parameter()]
        [UpdateReplacePolicy]
        $UpdateReplacePolicy,
        [parameter(Mandatory = $false)]
        [string[]]
        $DependsOn,
        [parameter(Mandatory = $false)]
        [VSJson]
        $Metadata,
        [parameter(Mandatory = $false)]
        [UpdatePolicy]
        $UpdatePolicy,
        [parameter(Mandatory = $false)]
        [string]
        $Condition
    )
    Process {
        $obj = [LogsDestination]::new($PSBoundParameters)
        Write-Debug "$($MyInvocation.MyCommand) PSBoundParameters:`n$($PSBoundParameters | ConvertTo-Json -Depth 20 | Format-Json)"
        Write-Verbose "Resulting object from $($MyInvocation.MyCommand): `n$($obj.ToJson() | Format-Json)"
        $obj
    }
}

Export-ModuleMember -Function 'New-VSLogsDestination'

function New-VSLogsLogGroup {
    <#
    .SYNOPSIS
        Adds an AWS::Logs::LogGroup resource to the template. The AWS::Logs::LogGroup resource specifies a log group. A log group defines common properties for log streams, such as their retention and access control rules. Each log stream must belong to one log group.

    .DESCRIPTION
        Adds an AWS::Logs::LogGroup resource to the template. The AWS::Logs::LogGroup resource specifies a log group. A log group defines common properties for log streams, such as their retention and access control rules. Each log stream must belong to one log group.

You can create up to 5000 log groups per account. You must use the following guidelines when naming a log group:

+ Log group names must be unique within a Region for an AWS account.

+ Log group names can be between 1 and 512 characters long.

+ Log group names consist of the following characters: a-z, A-Z, 0-9, '_' (underscore, '-' (hyphen, '/' (forward slash, and '.' (period.

If you associate a AWS Key Management Service (AWS KMS customer master key (CMK with the log group, ingested data is encrypted using the CMK. This association is stored as long as the data encrypted with the CMK is still within Amazon CloudWatch Logs. This enables Amazon CloudWatch Logs to decrypt this data whenever it is requested.

If you attempt to associate a CMK with the log group but the CMK doesn't exist or the CMK is disabled, you will receive an InvalidParameterException error.

    .LINK
        http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-logs-loggroup.html

    .PARAMETER LogicalId
        The logical ID must be alphanumeric (A-Za-z0-9) and unique within the template. Use the logical name to reference the resource in other parts of the template. For example, if you want to map an Amazon Elastic Block Store volume to an Amazon EC2 instance, you reference the logical IDs to associate the block stores with the instance.

    .PARAMETER LogGroupName
        The name of the log group. If you don't specify a name, AWS CloudFormation generates a unique ID for the log group.

        Documentation: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-logs-loggroup.html#cfn-logs-loggroup-loggroupname
        UpdateType: Immutable
        PrimitiveType: String

    .PARAMETER KmsKeyId
        Documentation: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-logs-loggroup.html#cfn-logs-loggroup-kmskeyid
        UpdateType: Mutable
        PrimitiveType: String

    .PARAMETER RetentionInDays
        The number of days to retain the log events in the specified log group. Possible values are: 1, 3, 5, 7, 14, 30, 60, 90, 120, 150, 180, 365, 400, 545, 731, 1827, and 3653.

        Documentation: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-logs-loggroup.html#cfn-logs-loggroup-retentionindays
        UpdateType: Mutable
        PrimitiveType: Integer

    .PARAMETER DeletionPolicy
        With the DeletionPolicy attribute you can preserve or (in some cases) backup a resource when its stack is deleted. You specify a DeletionPolicy attribute for each resource that you want to control. If a resource has no DeletionPolicy attribute, AWS CloudFormation deletes the resource by default.

        To keep a resource when its stack is deleted, specify Retain for that resource. You can use retain for any resource. For example, you can retain a nested stack, S3 bucket, or EC2 instance so that you can continue to use or modify those resources after you delete their stacks.

        You must use one of the following options: "Delete","Retain","Snapshot"

    .PARAMETER UpdateReplacePolicy
        Use the UpdateReplacePolicy attribute to retain or (in some cases) backup the existing physical instance of a resource when it is replaced during a stack update operation.

        When you initiate a stack update, AWS CloudFormation updates resources based on differences between what you submit and the stack's current template and parameters. If you update a resource property that requires that the resource be replaced, AWS CloudFormation recreates the resource during the update. Recreating the resource generates a new physical ID. AWS CloudFormation creates the replacement resource first, and then changes references from other dependent resources to point to the replacement resource. By default, AWS CloudFormation then deletes the old resource. Using the UpdateReplacePolicy, you can specify that AWS CloudFormation retain or (in some cases) create a snapshot of the old resource.

        For resources that support snapshots, such as AWS::EC2::Volume, specify Snapshot to have AWS CloudFormation create a snapshot before deleting the old resource instance.

        You can apply the UpdateReplacePolicy attribute to any resource. UpdateReplacePolicy is only executed if you update a resource property whose update behavior is specified as Replacement, thereby causing AWS CloudFormation to replace the old resource with a new one with a new physical ID. For example, if you update the Engine property of an AWS::RDS::DBInstance resource type, AWS CloudFormation creates a new resource and replaces the current DB instance resource with the new one. The UpdateReplacePolicy attribute would then dictate whether AWS CloudFormation deleted, retained, or created a snapshot of the old DB instance. The update behavior for each property of a resource is specified in the reference topic for that resource in the AWS Resource and Property Types Reference. For more information on resource update behavior, see Update Behaviors of Stack Resources.

        The UpdateReplacePolicy attribute applies to stack updates you perform directly, as well as stack updates performed using change sets.

        Note
        Resources that are retained continue to exist and continue to incur applicable charges until you delete those resources. Snapshots that are created with this policy continue to exist and continue to incur applicable charges until you delete those snapshots. UpdateReplacePolicy retains the old physical resource or snapshot, but removes it from AWS CloudFormation's scope.

        UpdateReplacePolicy differs from the DeletionPolicy attribute in that it only applies to resources replaced during stack updates. Use DeletionPolicy for resources deleted when a stack is deleted, or when the resource definition itself is deleted from the template as part of a stack update.

        You must use one of the following options: "Delete","Retain","Snapshot"

    .PARAMETER DependsOn
        With the DependsOn attribute you can specify that the creation of a specific resource follows another. When you add a DependsOn attribute to a resource, that resource is created only after the creation of the resource specified in the DependsOn attribute.

        This parameter takes a string or list of strings representing Logical IDs of resources that must be created prior to this resource being created.


    .PARAMETER Metadata
        The Metadata attribute enables you to associate structured data with a resource. By adding a Metadata attribute to a resource, you can add data in JSON or YAML to the resource declaration. In addition, you can use intrinsic functions (such as GetAtt and Ref), parameters, and pseudo parameters within the Metadata attribute to add those interpreted values.

        This will be returned when describing the resource using AWS CLI.


    .PARAMETER UpdatePolicy
        Use the UpdatePolicy attribute to specify how AWS CloudFormation handles updates to the AWS::AutoScaling::AutoScalingGroup resource. AWS CloudFormation invokes one of three update policies depending on the type of change you make or whether a scheduled action is associated with the Auto Scaling group.

        You must use the "Add-UpdatePolicy" function or the [UpdatePolicy] class here.
    .PARAMETER Condition
        Logical ID of the condition that this resource needs to be true in order for this resource to be provisioned.

    .FUNCTIONALITY
        Vaporshell
    #>

    [OutputType([LogsLogGroup])]
    [cmdletbinding()]
    Param(
        [parameter(Mandatory = $true,Position = 0)]
        [ValidateLogicalId()]
        [string]
        $LogicalId,
        [parameter(Mandatory = $false)]
        [object]
        $LogGroupName,
        [parameter(Mandatory = $false)]
        [object]
        $KmsKeyId,
        [parameter(Mandatory = $false)]
        [object]
        $RetentionInDays,
        [parameter()]
        [DeletionPolicy]
        $DeletionPolicy,
        [parameter()]
        [UpdateReplacePolicy]
        $UpdateReplacePolicy,
        [parameter(Mandatory = $false)]
        [string[]]
        $DependsOn,
        [parameter(Mandatory = $false)]
        [VSJson]
        $Metadata,
        [parameter(Mandatory = $false)]
        [UpdatePolicy]
        $UpdatePolicy,
        [parameter(Mandatory = $false)]
        [string]
        $Condition
    )
    Process {
        $obj = [LogsLogGroup]::new($PSBoundParameters)
        Write-Debug "$($MyInvocation.MyCommand) PSBoundParameters:`n$($PSBoundParameters | ConvertTo-Json -Depth 20 | Format-Json)"
        Write-Verbose "Resulting object from $($MyInvocation.MyCommand): `n$($obj.ToJson() | Format-Json)"
        $obj
    }
}

Export-ModuleMember -Function 'New-VSLogsLogGroup'

function New-VSLogsLogStream {
    <#
    .SYNOPSIS
        Adds an AWS::Logs::LogStream resource to the template. The AWS::Logs::LogStream resource specifies an Amazon CloudWatch Logs log stream in a specific log group. A log stream represents the sequence of events coming from an application instance or resource that you are monitoring.

    .DESCRIPTION
        Adds an AWS::Logs::LogStream resource to the template. The AWS::Logs::LogStream resource specifies an Amazon CloudWatch Logs log stream in a specific log group. A log stream represents the sequence of events coming from an application instance or resource that you are monitoring.

There is no limit on the number of log streams that you can create for a log group.

You must use the following guidelines when naming a log stream:

+ Log stream names must be unique within the log group.

+ Log stream names can be between 1 and 512 characters long.

+ The ':' (colon and '*' (asterisk characters are not allowed.

    .LINK
        http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-logs-logstream.html

    .PARAMETER LogicalId
        The logical ID must be alphanumeric (A-Za-z0-9) and unique within the template. Use the logical name to reference the resource in other parts of the template. For example, if you want to map an Amazon Elastic Block Store volume to an Amazon EC2 instance, you reference the logical IDs to associate the block stores with the instance.

    .PARAMETER LogGroupName
        The name of the log group where the log stream is created.

        Documentation: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-logs-logstream.html#cfn-logs-logstream-loggroupname
        PrimitiveType: String
        UpdateType: Immutable

    .PARAMETER LogStreamName
        The name of the log stream. The name must be unique within the log group.

        Documentation: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-logs-logstream.html#cfn-logs-logstream-logstreamname
        PrimitiveType: String
        UpdateType: Immutable

    .PARAMETER DeletionPolicy
        With the DeletionPolicy attribute you can preserve or (in some cases) backup a resource when its stack is deleted. You specify a DeletionPolicy attribute for each resource that you want to control. If a resource has no DeletionPolicy attribute, AWS CloudFormation deletes the resource by default.

        To keep a resource when its stack is deleted, specify Retain for that resource. You can use retain for any resource. For example, you can retain a nested stack, S3 bucket, or EC2 instance so that you can continue to use or modify those resources after you delete their stacks.

        You must use one of the following options: "Delete","Retain","Snapshot"

    .PARAMETER UpdateReplacePolicy
        Use the UpdateReplacePolicy attribute to retain or (in some cases) backup the existing physical instance of a resource when it is replaced during a stack update operation.

        When you initiate a stack update, AWS CloudFormation updates resources based on differences between what you submit and the stack's current template and parameters. If you update a resource property that requires that the resource be replaced, AWS CloudFormation recreates the resource during the update. Recreating the resource generates a new physical ID. AWS CloudFormation creates the replacement resource first, and then changes references from other dependent resources to point to the replacement resource. By default, AWS CloudFormation then deletes the old resource. Using the UpdateReplacePolicy, you can specify that AWS CloudFormation retain or (in some cases) create a snapshot of the old resource.

        For resources that support snapshots, such as AWS::EC2::Volume, specify Snapshot to have AWS CloudFormation create a snapshot before deleting the old resource instance.

        You can apply the UpdateReplacePolicy attribute to any resource. UpdateReplacePolicy is only executed if you update a resource property whose update behavior is specified as Replacement, thereby causing AWS CloudFormation to replace the old resource with a new one with a new physical ID. For example, if you update the Engine property of an AWS::RDS::DBInstance resource type, AWS CloudFormation creates a new resource and replaces the current DB instance resource with the new one. The UpdateReplacePolicy attribute would then dictate whether AWS CloudFormation deleted, retained, or created a snapshot of the old DB instance. The update behavior for each property of a resource is specified in the reference topic for that resource in the AWS Resource and Property Types Reference. For more information on resource update behavior, see Update Behaviors of Stack Resources.

        The UpdateReplacePolicy attribute applies to stack updates you perform directly, as well as stack updates performed using change sets.

        Note
        Resources that are retained continue to exist and continue to incur applicable charges until you delete those resources. Snapshots that are created with this policy continue to exist and continue to incur applicable charges until you delete those snapshots. UpdateReplacePolicy retains the old physical resource or snapshot, but removes it from AWS CloudFormation's scope.

        UpdateReplacePolicy differs from the DeletionPolicy attribute in that it only applies to resources replaced during stack updates. Use DeletionPolicy for resources deleted when a stack is deleted, or when the resource definition itself is deleted from the template as part of a stack update.

        You must use one of the following options: "Delete","Retain","Snapshot"

    .PARAMETER DependsOn
        With the DependsOn attribute you can specify that the creation of a specific resource follows another. When you add a DependsOn attribute to a resource, that resource is created only after the creation of the resource specified in the DependsOn attribute.

        This parameter takes a string or list of strings representing Logical IDs of resources that must be created prior to this resource being created.


    .PARAMETER Metadata
        The Metadata attribute enables you to associate structured data with a resource. By adding a Metadata attribute to a resource, you can add data in JSON or YAML to the resource declaration. In addition, you can use intrinsic functions (such as GetAtt and Ref), parameters, and pseudo parameters within the Metadata attribute to add those interpreted values.

        This will be returned when describing the resource using AWS CLI.


    .PARAMETER UpdatePolicy
        Use the UpdatePolicy attribute to specify how AWS CloudFormation handles updates to the AWS::AutoScaling::AutoScalingGroup resource. AWS CloudFormation invokes one of three update policies depending on the type of change you make or whether a scheduled action is associated with the Auto Scaling group.

        You must use the "Add-UpdatePolicy" function or the [UpdatePolicy] class here.
    .PARAMETER Condition
        Logical ID of the condition that this resource needs to be true in order for this resource to be provisioned.

    .FUNCTIONALITY
        Vaporshell
    #>

    [OutputType([LogsLogStream])]
    [cmdletbinding()]
    Param(
        [parameter(Mandatory = $true,Position = 0)]
        [ValidateLogicalId()]
        [string]
        $LogicalId,
        [parameter(Mandatory = $true)]
        [object]
        $LogGroupName,
        [parameter(Mandatory = $false)]
        [object]
        $LogStreamName,
        [parameter()]
        [DeletionPolicy]
        $DeletionPolicy,
        [parameter()]
        [UpdateReplacePolicy]
        $UpdateReplacePolicy,
        [parameter(Mandatory = $false)]
        [string[]]
        $DependsOn,
        [parameter(Mandatory = $false)]
        [VSJson]
        $Metadata,
        [parameter(Mandatory = $false)]
        [UpdatePolicy]
        $UpdatePolicy,
        [parameter(Mandatory = $false)]
        [string]
        $Condition
    )
    Process {
        $obj = [LogsLogStream]::new($PSBoundParameters)
        Write-Debug "$($MyInvocation.MyCommand) PSBoundParameters:`n$($PSBoundParameters | ConvertTo-Json -Depth 20 | Format-Json)"
        Write-Verbose "Resulting object from $($MyInvocation.MyCommand): `n$($obj.ToJson() | Format-Json)"
        $obj
    }
}

Export-ModuleMember -Function 'New-VSLogsLogStream'

function New-VSLogsMetricFilter {
    <#
    .SYNOPSIS
        Adds an AWS::Logs::MetricFilter resource to the template. The AWS::Logs::MetricFilter resource specifies a metric filter that describes how CloudWatch Logs extracts information from logs and transforms it into Amazon CloudWatch metrics. If you have multiple metric filters that are associated with a log group, all the filters are applied to the log streams in that group.

    .DESCRIPTION
        Adds an AWS::Logs::MetricFilter resource to the template. The AWS::Logs::MetricFilter resource specifies a metric filter that describes how CloudWatch Logs extracts information from logs and transforms it into Amazon CloudWatch metrics. If you have multiple metric filters that are associated with a log group, all the filters are applied to the log streams in that group.

The maximum number of metric filters that can be associated with a log group is 100.

    .LINK
        http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-logs-metricfilter.html

    .PARAMETER LogicalId
        The logical ID must be alphanumeric (A-Za-z0-9) and unique within the template. Use the logical name to reference the resource in other parts of the template. For example, if you want to map an Amazon Elastic Block Store volume to an Amazon EC2 instance, you reference the logical IDs to associate the block stores with the instance.

    .PARAMETER FilterPattern
        A filter pattern for extracting metric data out of ingested log events. For more information, see Filter and Pattern Syntax: https://docs.aws.amazon.com/AmazonCloudWatch/latest/logs/FilterAndPatternSyntax.html.

        Documentation: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-logs-metricfilter.html#cfn-cwl-metricfilter-filterpattern
        PrimitiveType: String
        UpdateType: Mutable

    .PARAMETER LogGroupName
        The name of an existing log group that you want to associate with this metric filter.

        Documentation: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-logs-metricfilter.html#cfn-cwl-metricfilter-loggroupname
        PrimitiveType: String
        UpdateType: Immutable

    .PARAMETER MetricTransformations
        The metric transformations.

        Documentation: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-logs-metricfilter.html#cfn-cwl-metricfilter-metrictransformations
        DuplicatesAllowed: False
        ItemType: MetricTransformation
        Type: List
        UpdateType: Mutable

    .PARAMETER DeletionPolicy
        With the DeletionPolicy attribute you can preserve or (in some cases) backup a resource when its stack is deleted. You specify a DeletionPolicy attribute for each resource that you want to control. If a resource has no DeletionPolicy attribute, AWS CloudFormation deletes the resource by default.

        To keep a resource when its stack is deleted, specify Retain for that resource. You can use retain for any resource. For example, you can retain a nested stack, S3 bucket, or EC2 instance so that you can continue to use or modify those resources after you delete their stacks.

        You must use one of the following options: "Delete","Retain","Snapshot"

    .PARAMETER UpdateReplacePolicy
        Use the UpdateReplacePolicy attribute to retain or (in some cases) backup the existing physical instance of a resource when it is replaced during a stack update operation.

        When you initiate a stack update, AWS CloudFormation updates resources based on differences between what you submit and the stack's current template and parameters. If you update a resource property that requires that the resource be replaced, AWS CloudFormation recreates the resource during the update. Recreating the resource generates a new physical ID. AWS CloudFormation creates the replacement resource first, and then changes references from other dependent resources to point to the replacement resource. By default, AWS CloudFormation then deletes the old resource. Using the UpdateReplacePolicy, you can specify that AWS CloudFormation retain or (in some cases) create a snapshot of the old resource.

        For resources that support snapshots, such as AWS::EC2::Volume, specify Snapshot to have AWS CloudFormation create a snapshot before deleting the old resource instance.

        You can apply the UpdateReplacePolicy attribute to any resource. UpdateReplacePolicy is only executed if you update a resource property whose update behavior is specified as Replacement, thereby causing AWS CloudFormation to replace the old resource with a new one with a new physical ID. For example, if you update the Engine property of an AWS::RDS::DBInstance resource type, AWS CloudFormation creates a new resource and replaces the current DB instance resource with the new one. The UpdateReplacePolicy attribute would then dictate whether AWS CloudFormation deleted, retained, or created a snapshot of the old DB instance. The update behavior for each property of a resource is specified in the reference topic for that resource in the AWS Resource and Property Types Reference. For more information on resource update behavior, see Update Behaviors of Stack Resources.

        The UpdateReplacePolicy attribute applies to stack updates you perform directly, as well as stack updates performed using change sets.

        Note
        Resources that are retained continue to exist and continue to incur applicable charges until you delete those resources. Snapshots that are created with this policy continue to exist and continue to incur applicable charges until you delete those snapshots. UpdateReplacePolicy retains the old physical resource or snapshot, but removes it from AWS CloudFormation's scope.

        UpdateReplacePolicy differs from the DeletionPolicy attribute in that it only applies to resources replaced during stack updates. Use DeletionPolicy for resources deleted when a stack is deleted, or when the resource definition itself is deleted from the template as part of a stack update.

        You must use one of the following options: "Delete","Retain","Snapshot"

    .PARAMETER DependsOn
        With the DependsOn attribute you can specify that the creation of a specific resource follows another. When you add a DependsOn attribute to a resource, that resource is created only after the creation of the resource specified in the DependsOn attribute.

        This parameter takes a string or list of strings representing Logical IDs of resources that must be created prior to this resource being created.


    .PARAMETER Metadata
        The Metadata attribute enables you to associate structured data with a resource. By adding a Metadata attribute to a resource, you can add data in JSON or YAML to the resource declaration. In addition, you can use intrinsic functions (such as GetAtt and Ref), parameters, and pseudo parameters within the Metadata attribute to add those interpreted values.

        This will be returned when describing the resource using AWS CLI.


    .PARAMETER UpdatePolicy
        Use the UpdatePolicy attribute to specify how AWS CloudFormation handles updates to the AWS::AutoScaling::AutoScalingGroup resource. AWS CloudFormation invokes one of three update policies depending on the type of change you make or whether a scheduled action is associated with the Auto Scaling group.

        You must use the "Add-UpdatePolicy" function or the [UpdatePolicy] class here.
    .PARAMETER Condition
        Logical ID of the condition that this resource needs to be true in order for this resource to be provisioned.

    .FUNCTIONALITY
        Vaporshell
    #>

    [OutputType([LogsMetricFilter])]
    [cmdletbinding()]
    Param(
        [parameter(Mandatory = $true,Position = 0)]
        [ValidateLogicalId()]
        [string]
        $LogicalId,
        [parameter(Mandatory = $true)]
        [object]
        $FilterPattern,
        [parameter(Mandatory = $true)]
        [object]
        $LogGroupName,
        [parameter(Mandatory = $true)]
        [object]
        $MetricTransformations,
        [parameter()]
        [DeletionPolicy]
        $DeletionPolicy,
        [parameter()]
        [UpdateReplacePolicy]
        $UpdateReplacePolicy,
        [parameter(Mandatory = $false)]
        [string[]]
        $DependsOn,
        [parameter(Mandatory = $false)]
        [VSJson]
        $Metadata,
        [parameter(Mandatory = $false)]
        [UpdatePolicy]
        $UpdatePolicy,
        [parameter(Mandatory = $false)]
        [string]
        $Condition
    )
    Process {
        $obj = [LogsMetricFilter]::new($PSBoundParameters)
        Write-Debug "$($MyInvocation.MyCommand) PSBoundParameters:`n$($PSBoundParameters | ConvertTo-Json -Depth 20 | Format-Json)"
        Write-Verbose "Resulting object from $($MyInvocation.MyCommand): `n$($obj.ToJson() | Format-Json)"
        $obj
    }
}

Export-ModuleMember -Function 'New-VSLogsMetricFilter'

function New-VSLogsQueryDefinition {
    <#
    .SYNOPSIS
        Adds an AWS::Logs::QueryDefinition resource to the template.

    .DESCRIPTION
        Adds an AWS::Logs::QueryDefinition resource to the template.

    .LINK
        http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-logs-querydefinition.html

    .PARAMETER LogicalId
        The logical ID must be alphanumeric (A-Za-z0-9) and unique within the template. Use the logical name to reference the resource in other parts of the template. For example, if you want to map an Amazon Elastic Block Store volume to an Amazon EC2 instance, you reference the logical IDs to associate the block stores with the instance.

    .PARAMETER Name
        Documentation: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-logs-querydefinition.html#cfn-logs-querydefinition-name
        UpdateType: Mutable
        PrimitiveType: String

    .PARAMETER QueryString
        Documentation: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-logs-querydefinition.html#cfn-logs-querydefinition-querystring
        UpdateType: Mutable
        PrimitiveType: String

    .PARAMETER LogGroupNames
        Documentation: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-logs-querydefinition.html#cfn-logs-querydefinition-loggroupnames
        UpdateType: Mutable
        Type: List
        PrimitiveItemType: String

    .PARAMETER DeletionPolicy
        With the DeletionPolicy attribute you can preserve or (in some cases) backup a resource when its stack is deleted. You specify a DeletionPolicy attribute for each resource that you want to control. If a resource has no DeletionPolicy attribute, AWS CloudFormation deletes the resource by default.

        To keep a resource when its stack is deleted, specify Retain for that resource. You can use retain for any resource. For example, you can retain a nested stack, S3 bucket, or EC2 instance so that you can continue to use or modify those resources after you delete their stacks.

        You must use one of the following options: "Delete","Retain","Snapshot"

    .PARAMETER UpdateReplacePolicy
        Use the UpdateReplacePolicy attribute to retain or (in some cases) backup the existing physical instance of a resource when it is replaced during a stack update operation.

        When you initiate a stack update, AWS CloudFormation updates resources based on differences between what you submit and the stack's current template and parameters. If you update a resource property that requires that the resource be replaced, AWS CloudFormation recreates the resource during the update. Recreating the resource generates a new physical ID. AWS CloudFormation creates the replacement resource first, and then changes references from other dependent resources to point to the replacement resource. By default, AWS CloudFormation then deletes the old resource. Using the UpdateReplacePolicy, you can specify that AWS CloudFormation retain or (in some cases) create a snapshot of the old resource.

        For resources that support snapshots, such as AWS::EC2::Volume, specify Snapshot to have AWS CloudFormation create a snapshot before deleting the old resource instance.

        You can apply the UpdateReplacePolicy attribute to any resource. UpdateReplacePolicy is only executed if you update a resource property whose update behavior is specified as Replacement, thereby causing AWS CloudFormation to replace the old resource with a new one with a new physical ID. For example, if you update the Engine property of an AWS::RDS::DBInstance resource type, AWS CloudFormation creates a new resource and replaces the current DB instance resource with the new one. The UpdateReplacePolicy attribute would then dictate whether AWS CloudFormation deleted, retained, or created a snapshot of the old DB instance. The update behavior for each property of a resource is specified in the reference topic for that resource in the AWS Resource and Property Types Reference. For more information on resource update behavior, see Update Behaviors of Stack Resources.

        The UpdateReplacePolicy attribute applies to stack updates you perform directly, as well as stack updates performed using change sets.

        Note
        Resources that are retained continue to exist and continue to incur applicable charges until you delete those resources. Snapshots that are created with this policy continue to exist and continue to incur applicable charges until you delete those snapshots. UpdateReplacePolicy retains the old physical resource or snapshot, but removes it from AWS CloudFormation's scope.

        UpdateReplacePolicy differs from the DeletionPolicy attribute in that it only applies to resources replaced during stack updates. Use DeletionPolicy for resources deleted when a stack is deleted, or when the resource definition itself is deleted from the template as part of a stack update.

        You must use one of the following options: "Delete","Retain","Snapshot"

    .PARAMETER DependsOn
        With the DependsOn attribute you can specify that the creation of a specific resource follows another. When you add a DependsOn attribute to a resource, that resource is created only after the creation of the resource specified in the DependsOn attribute.

        This parameter takes a string or list of strings representing Logical IDs of resources that must be created prior to this resource being created.


    .PARAMETER Metadata
        The Metadata attribute enables you to associate structured data with a resource. By adding a Metadata attribute to a resource, you can add data in JSON or YAML to the resource declaration. In addition, you can use intrinsic functions (such as GetAtt and Ref), parameters, and pseudo parameters within the Metadata attribute to add those interpreted values.

        This will be returned when describing the resource using AWS CLI.


    .PARAMETER UpdatePolicy
        Use the UpdatePolicy attribute to specify how AWS CloudFormation handles updates to the AWS::AutoScaling::AutoScalingGroup resource. AWS CloudFormation invokes one of three update policies depending on the type of change you make or whether a scheduled action is associated with the Auto Scaling group.

        You must use the "Add-UpdatePolicy" function or the [UpdatePolicy] class here.
    .PARAMETER Condition
        Logical ID of the condition that this resource needs to be true in order for this resource to be provisioned.

    .FUNCTIONALITY
        Vaporshell
    #>

    [OutputType([LogsQueryDefinition])]
    [cmdletbinding()]
    Param(
        [parameter(Mandatory = $true,Position = 0)]
        [ValidateLogicalId()]
        [string]
        $LogicalId,
        [parameter(Mandatory = $true)]
        [object]
        $Name,
        [parameter(Mandatory = $true)]
        [object]
        $QueryString,
        [parameter(Mandatory = $false)]
        $LogGroupNames,
        [parameter()]
        [DeletionPolicy]
        $DeletionPolicy,
        [parameter()]
        [UpdateReplacePolicy]
        $UpdateReplacePolicy,
        [parameter(Mandatory = $false)]
        [string[]]
        $DependsOn,
        [parameter(Mandatory = $false)]
        [VSJson]
        $Metadata,
        [parameter(Mandatory = $false)]
        [UpdatePolicy]
        $UpdatePolicy,
        [parameter(Mandatory = $false)]
        [string]
        $Condition
    )
    Process {
        $obj = [LogsQueryDefinition]::new($PSBoundParameters)
        Write-Debug "$($MyInvocation.MyCommand) PSBoundParameters:`n$($PSBoundParameters | ConvertTo-Json -Depth 20 | Format-Json)"
        Write-Verbose "Resulting object from $($MyInvocation.MyCommand): `n$($obj.ToJson() | Format-Json)"
        $obj
    }
}

Export-ModuleMember -Function 'New-VSLogsQueryDefinition'

function New-VSLogsResourcePolicy {
    <#
    .SYNOPSIS
        Adds an AWS::Logs::ResourcePolicy resource to the template.

    .DESCRIPTION
        Adds an AWS::Logs::ResourcePolicy resource to the template.

    .LINK
        http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-logs-resourcepolicy.html

    .PARAMETER LogicalId
        The logical ID must be alphanumeric (A-Za-z0-9) and unique within the template. Use the logical name to reference the resource in other parts of the template. For example, if you want to map an Amazon Elastic Block Store volume to an Amazon EC2 instance, you reference the logical IDs to associate the block stores with the instance.

    .PARAMETER PolicyName
        Documentation: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-logs-resourcepolicy.html#cfn-logs-resourcepolicy-policyname
        UpdateType: Immutable
        PrimitiveType: String

    .PARAMETER PolicyDocument
        Documentation: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-logs-resourcepolicy.html#cfn-logs-resourcepolicy-policydocument
        UpdateType: Mutable
        PrimitiveType: String

    .PARAMETER DeletionPolicy
        With the DeletionPolicy attribute you can preserve or (in some cases) backup a resource when its stack is deleted. You specify a DeletionPolicy attribute for each resource that you want to control. If a resource has no DeletionPolicy attribute, AWS CloudFormation deletes the resource by default.

        To keep a resource when its stack is deleted, specify Retain for that resource. You can use retain for any resource. For example, you can retain a nested stack, S3 bucket, or EC2 instance so that you can continue to use or modify those resources after you delete their stacks.

        You must use one of the following options: "Delete","Retain","Snapshot"

    .PARAMETER UpdateReplacePolicy
        Use the UpdateReplacePolicy attribute to retain or (in some cases) backup the existing physical instance of a resource when it is replaced during a stack update operation.

        When you initiate a stack update, AWS CloudFormation updates resources based on differences between what you submit and the stack's current template and parameters. If you update a resource property that requires that the resource be replaced, AWS CloudFormation recreates the resource during the update. Recreating the resource generates a new physical ID. AWS CloudFormation creates the replacement resource first, and then changes references from other dependent resources to point to the replacement resource. By default, AWS CloudFormation then deletes the old resource. Using the UpdateReplacePolicy, you can specify that AWS CloudFormation retain or (in some cases) create a snapshot of the old resource.

        For resources that support snapshots, such as AWS::EC2::Volume, specify Snapshot to have AWS CloudFormation create a snapshot before deleting the old resource instance.

        You can apply the UpdateReplacePolicy attribute to any resource. UpdateReplacePolicy is only executed if you update a resource property whose update behavior is specified as Replacement, thereby causing AWS CloudFormation to replace the old resource with a new one with a new physical ID. For example, if you update the Engine property of an AWS::RDS::DBInstance resource type, AWS CloudFormation creates a new resource and replaces the current DB instance resource with the new one. The UpdateReplacePolicy attribute would then dictate whether AWS CloudFormation deleted, retained, or created a snapshot of the old DB instance. The update behavior for each property of a resource is specified in the reference topic for that resource in the AWS Resource and Property Types Reference. For more information on resource update behavior, see Update Behaviors of Stack Resources.

        The UpdateReplacePolicy attribute applies to stack updates you perform directly, as well as stack updates performed using change sets.

        Note
        Resources that are retained continue to exist and continue to incur applicable charges until you delete those resources. Snapshots that are created with this policy continue to exist and continue to incur applicable charges until you delete those snapshots. UpdateReplacePolicy retains the old physical resource or snapshot, but removes it from AWS CloudFormation's scope.

        UpdateReplacePolicy differs from the DeletionPolicy attribute in that it only applies to resources replaced during stack updates. Use DeletionPolicy for resources deleted when a stack is deleted, or when the resource definition itself is deleted from the template as part of a stack update.

        You must use one of the following options: "Delete","Retain","Snapshot"

    .PARAMETER DependsOn
        With the DependsOn attribute you can specify that the creation of a specific resource follows another. When you add a DependsOn attribute to a resource, that resource is created only after the creation of the resource specified in the DependsOn attribute.

        This parameter takes a string or list of strings representing Logical IDs of resources that must be created prior to this resource being created.


    .PARAMETER Metadata
        The Metadata attribute enables you to associate structured data with a resource. By adding a Metadata attribute to a resource, you can add data in JSON or YAML to the resource declaration. In addition, you can use intrinsic functions (such as GetAtt and Ref), parameters, and pseudo parameters within the Metadata attribute to add those interpreted values.

        This will be returned when describing the resource using AWS CLI.


    .PARAMETER UpdatePolicy
        Use the UpdatePolicy attribute to specify how AWS CloudFormation handles updates to the AWS::AutoScaling::AutoScalingGroup resource. AWS CloudFormation invokes one of three update policies depending on the type of change you make or whether a scheduled action is associated with the Auto Scaling group.

        You must use the "Add-UpdatePolicy" function or the [UpdatePolicy] class here.
    .PARAMETER Condition
        Logical ID of the condition that this resource needs to be true in order for this resource to be provisioned.

    .FUNCTIONALITY
        Vaporshell
    #>

    [OutputType([LogsResourcePolicy])]
    [cmdletbinding()]
    Param(
        [parameter(Mandatory = $true,Position = 0)]
        [ValidateLogicalId()]
        [string]
        $LogicalId,
        [parameter(Mandatory = $true)]
        [object]
        $PolicyName,
        [parameter(Mandatory = $true)]
        [object]
        $PolicyDocument,
        [parameter()]
        [DeletionPolicy]
        $DeletionPolicy,
        [parameter()]
        [UpdateReplacePolicy]
        $UpdateReplacePolicy,
        [parameter(Mandatory = $false)]
        [string[]]
        $DependsOn,
        [parameter(Mandatory = $false)]
        [VSJson]
        $Metadata,
        [parameter(Mandatory = $false)]
        [UpdatePolicy]
        $UpdatePolicy,
        [parameter(Mandatory = $false)]
        [string]
        $Condition
    )
    Process {
        $obj = [LogsResourcePolicy]::new($PSBoundParameters)
        Write-Debug "$($MyInvocation.MyCommand) PSBoundParameters:`n$($PSBoundParameters | ConvertTo-Json -Depth 20 | Format-Json)"
        Write-Verbose "Resulting object from $($MyInvocation.MyCommand): `n$($obj.ToJson() | Format-Json)"
        $obj
    }
}

Export-ModuleMember -Function 'New-VSLogsResourcePolicy'

function New-VSLogsSubscriptionFilter {
    <#
    .SYNOPSIS
        Adds an AWS::Logs::SubscriptionFilter resource to the template. The AWS::Logs::SubscriptionFilter resource specifies a subscription filter and associates it with the specified log group. Subscription filters allow you to subscribe to a real-time stream of log events and have them delivered to a specific destination. Currently, the supported destinations are:

    .DESCRIPTION
        Adds an AWS::Logs::SubscriptionFilter resource to the template. The AWS::Logs::SubscriptionFilter resource specifies a subscription filter and associates it with the specified log group. Subscription filters allow you to subscribe to a real-time stream of log events and have them delivered to a specific destination. Currently, the supported destinations are:

+ An Amazon Kinesis data stream belonging to the same account as the subscription filter, for same-account delivery.

+ A logical destination that belongs to a different account, for cross-account delivery.

+ An Amazon Kinesis Firehose delivery stream that belongs to the same account as the subscription filter, for same-account delivery.

+ An AWS Lambda function that belongs to the same account as the subscription filter, for same-account delivery.

There can only be one subscription filter associated with a log group.

    .LINK
        http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-logs-subscriptionfilter.html

    .PARAMETER LogicalId
        The logical ID must be alphanumeric (A-Za-z0-9) and unique within the template. Use the logical name to reference the resource in other parts of the template. For example, if you want to map an Amazon Elastic Block Store volume to an Amazon EC2 instance, you reference the logical IDs to associate the block stores with the instance.

    .PARAMETER DestinationArn
        The Amazon Resource Name ARN of the destination.

        Documentation: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-logs-subscriptionfilter.html#cfn-cwl-subscriptionfilter-destinationarn
        PrimitiveType: String
        UpdateType: Immutable

    .PARAMETER FilterPattern
        The filtering expressions that restrict what gets delivered to the destination AWS resource. For more information about the filter pattern syntax, see Filter and Pattern Syntax: https://docs.aws.amazon.com/AmazonCloudWatch/latest/logs/FilterAndPatternSyntax.html.

        Documentation: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-logs-subscriptionfilter.html#cfn-cwl-subscriptionfilter-filterpattern
        PrimitiveType: String
        UpdateType: Immutable

    .PARAMETER LogGroupName
        The log group to associate with the subscription filter. All log events that are uploaded to this log group are filtered and delivered to the specified AWS resource if the filter pattern matches the log events.

        Documentation: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-logs-subscriptionfilter.html#cfn-cwl-subscriptionfilter-loggroupname
        PrimitiveType: String
        UpdateType: Immutable

    .PARAMETER RoleArn
        The ARN of an IAM role that grants CloudWatch Logs permissions to deliver ingested log events to the destination stream.

        Documentation: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-logs-subscriptionfilter.html#cfn-cwl-subscriptionfilter-rolearn
        PrimitiveType: String
        UpdateType: Immutable

    .PARAMETER DeletionPolicy
        With the DeletionPolicy attribute you can preserve or (in some cases) backup a resource when its stack is deleted. You specify a DeletionPolicy attribute for each resource that you want to control. If a resource has no DeletionPolicy attribute, AWS CloudFormation deletes the resource by default.

        To keep a resource when its stack is deleted, specify Retain for that resource. You can use retain for any resource. For example, you can retain a nested stack, S3 bucket, or EC2 instance so that you can continue to use or modify those resources after you delete their stacks.

        You must use one of the following options: "Delete","Retain","Snapshot"

    .PARAMETER UpdateReplacePolicy
        Use the UpdateReplacePolicy attribute to retain or (in some cases) backup the existing physical instance of a resource when it is replaced during a stack update operation.

        When you initiate a stack update, AWS CloudFormation updates resources based on differences between what you submit and the stack's current template and parameters. If you update a resource property that requires that the resource be replaced, AWS CloudFormation recreates the resource during the update. Recreating the resource generates a new physical ID. AWS CloudFormation creates the replacement resource first, and then changes references from other dependent resources to point to the replacement resource. By default, AWS CloudFormation then deletes the old resource. Using the UpdateReplacePolicy, you can specify that AWS CloudFormation retain or (in some cases) create a snapshot of the old resource.

        For resources that support snapshots, such as AWS::EC2::Volume, specify Snapshot to have AWS CloudFormation create a snapshot before deleting the old resource instance.

        You can apply the UpdateReplacePolicy attribute to any resource. UpdateReplacePolicy is only executed if you update a resource property whose update behavior is specified as Replacement, thereby causing AWS CloudFormation to replace the old resource with a new one with a new physical ID. For example, if you update the Engine property of an AWS::RDS::DBInstance resource type, AWS CloudFormation creates a new resource and replaces the current DB instance resource with the new one. The UpdateReplacePolicy attribute would then dictate whether AWS CloudFormation deleted, retained, or created a snapshot of the old DB instance. The update behavior for each property of a resource is specified in the reference topic for that resource in the AWS Resource and Property Types Reference. For more information on resource update behavior, see Update Behaviors of Stack Resources.

        The UpdateReplacePolicy attribute applies to stack updates you perform directly, as well as stack updates performed using change sets.

        Note
        Resources that are retained continue to exist and continue to incur applicable charges until you delete those resources. Snapshots that are created with this policy continue to exist and continue to incur applicable charges until you delete those snapshots. UpdateReplacePolicy retains the old physical resource or snapshot, but removes it from AWS CloudFormation's scope.

        UpdateReplacePolicy differs from the DeletionPolicy attribute in that it only applies to resources replaced during stack updates. Use DeletionPolicy for resources deleted when a stack is deleted, or when the resource definition itself is deleted from the template as part of a stack update.

        You must use one of the following options: "Delete","Retain","Snapshot"

    .PARAMETER DependsOn
        With the DependsOn attribute you can specify that the creation of a specific resource follows another. When you add a DependsOn attribute to a resource, that resource is created only after the creation of the resource specified in the DependsOn attribute.

        This parameter takes a string or list of strings representing Logical IDs of resources that must be created prior to this resource being created.


    .PARAMETER Metadata
        The Metadata attribute enables you to associate structured data with a resource. By adding a Metadata attribute to a resource, you can add data in JSON or YAML to the resource declaration. In addition, you can use intrinsic functions (such as GetAtt and Ref), parameters, and pseudo parameters within the Metadata attribute to add those interpreted values.

        This will be returned when describing the resource using AWS CLI.


    .PARAMETER UpdatePolicy
        Use the UpdatePolicy attribute to specify how AWS CloudFormation handles updates to the AWS::AutoScaling::AutoScalingGroup resource. AWS CloudFormation invokes one of three update policies depending on the type of change you make or whether a scheduled action is associated with the Auto Scaling group.

        You must use the "Add-UpdatePolicy" function or the [UpdatePolicy] class here.
    .PARAMETER Condition
        Logical ID of the condition that this resource needs to be true in order for this resource to be provisioned.

    .FUNCTIONALITY
        Vaporshell
    #>

    [OutputType([LogsSubscriptionFilter])]
    [cmdletbinding()]
    Param(
        [parameter(Mandatory = $true,Position = 0)]
        [ValidateLogicalId()]
        [string]
        $LogicalId,
        [parameter(Mandatory = $true)]
        [object]
        $DestinationArn,
        [parameter(Mandatory = $true)]
        [object]
        $FilterPattern,
        [parameter(Mandatory = $true)]
        [object]
        $LogGroupName,
        [parameter(Mandatory = $false)]
        [object]
        $RoleArn,
        [parameter()]
        [DeletionPolicy]
        $DeletionPolicy,
        [parameter()]
        [UpdateReplacePolicy]
        $UpdateReplacePolicy,
        [parameter(Mandatory = $false)]
        [string[]]
        $DependsOn,
        [parameter(Mandatory = $false)]
        [VSJson]
        $Metadata,
        [parameter(Mandatory = $false)]
        [UpdatePolicy]
        $UpdatePolicy,
        [parameter(Mandatory = $false)]
        [string]
        $Condition
    )
    Process {
        $obj = [LogsSubscriptionFilter]::new($PSBoundParameters)
        Write-Debug "$($MyInvocation.MyCommand) PSBoundParameters:`n$($PSBoundParameters | ConvertTo-Json -Depth 20 | Format-Json)"
        Write-Verbose "Resulting object from $($MyInvocation.MyCommand): `n$($obj.ToJson() | Format-Json)"
        $obj
    }
}

Export-ModuleMember -Function 'New-VSLogsSubscriptionFilter'