DeploymentPreference
Specifies the configurations to enable gradual Lambda deployments. For more information about configuring gradual Lambda deployments, see Deploying serverless applications gradually.
Note
You must specify an AutoPublishAlias
in your AWS::Serverless::Function to use a DeploymentPreference
object, otherwise an error will result.
Syntax
To declare this entity in your Amazon Serverless Application Model (Amazon SAM) template, use the following syntax.
YAML
Alarms:
List
Enabled:Boolean
Hooks:Hooks
PassthroughCondition:Boolean
Role:String
TriggerConfigurations:List
Type:String
Properties
-
Alarms
-
A list of CloudWatch alarms that you want to be triggered by any errors raised by the deployment.
This property accepts the
Fn::If
intrinsic function. See the Examples section at the bottom of this topic for an example template that usesFn::If
.Type: List
Required: No
Amazon CloudFormation compatibility: This property is unique to Amazon SAM and doesn't have an Amazon CloudFormation equivalent.
-
Enabled
-
Whether this deployment preference is enabled.
Type: Boolean
Required: No
Default: True
Amazon CloudFormation compatibility: This property is unique to Amazon SAM and doesn't have an Amazon CloudFormation equivalent.
-
Hooks
-
Validation Lambda functions that are run before and after traffic shifting.
Type: Hooks
Required: No
Amazon CloudFormation compatibility: This property is unique to Amazon SAM and doesn't have an Amazon CloudFormation equivalent.
-
PassthroughCondition
-
If True, and if this deployment preference is enabled, the function's Condition will be passed through to the generated CodeDeploy resource. Generally, you should set this to True. Otherwise, the CodeDeploy resource would be created even if the function's Condition resolves to False.
Type: Boolean
Required: No
Amazon CloudFormation compatibility: This property is unique to Amazon SAM and doesn't have an Amazon CloudFormation equivalent.
-
Role
-
An IAM role ARN that CodeDeploy will use for traffic shifting. An IAM role will not be created if this is provided.
Type: String
Required: No
Amazon CloudFormation compatibility: This property is unique to Amazon SAM and doesn't have an Amazon CloudFormation equivalent.
-
TriggerConfigurations
-
A list of trigger configurations you want to associate with the deployment group. Used to notify an SNS topic on lifecycle events.
Type: List
Required: No
Amazon CloudFormation compatibility: This property is passed directly to the
TriggerConfigurations
property of anAWS::CodeDeploy::DeploymentGroup
resource. -
Type
-
There are two categories of deployment types at the moment: Linear and Canary. For more information about available deployment types see Deploying serverless applications gradually.
Type: String
Required: Yes
Amazon CloudFormation compatibility: This property is unique to Amazon SAM and doesn't have an Amazon CloudFormation equivalent.
Examples
DeploymentPreference with pre- and post-traffic hooks.
Example deployment preference that contains pre- and post-traffic hooks.
YAML
DeploymentPreference: Enabled: true Type: Canary10Percent10Minutes Alarms: - Ref: AliasErrorMetricGreaterThanZeroAlarm - Ref: LatestVersionErrorMetricGreaterThanZeroAlarm Hooks: PreTraffic: Ref: PreTrafficLambdaFunction PostTraffic: Ref: PostTrafficLambdaFunction
DeploymentPreference with Fn::If intrinsic function
Example deployment preference that uses Fn::If
for configuring alarms. In this example, Alarm1
will be configured if MyCondition
is true
, and Alarm2
and Alarm5
will be configured if MyCondition
is false
.
YAML
DeploymentPreference: Enabled: true Type: Canary10Percent10Minutes Alarms: Fn::If: - MyCondition - - Alarm1 - - Alarm2 - Alarm5