@aws-cdk/aws-events
Advanced tools
@aws-cdk/aws-events is an AWS Cloud Development Kit (CDK) library that allows you to define and manage Amazon EventBridge resources using code. EventBridge is a serverless event bus that makes it easier to build event-driven applications by connecting application data from your own applications, integrated Software-as-a-Service (SaaS) applications, and AWS services.
Creating an Event Bus
This code sample demonstrates how to create a new EventBridge event bus using the AWS CDK. The event bus can be used to receive and route events.
const events = require('@aws-cdk/aws-events');
const cdk = require('@aws-cdk/core');
const app = new cdk.App();
const stack = new cdk.Stack(app, 'EventBusStack');
const eventBus = new events.EventBus(stack, 'MyEventBus', {
eventBusName: 'my-event-bus'
});
app.synth();Creating a Rule
This code sample demonstrates how to create an EventBridge rule that triggers when an EC2 instance changes state to 'running'. The rule targets a Lambda function.
const events = require('@aws-cdk/aws-events');
const targets = require('@aws-cdk/aws-events-targets');
const cdk = require('@aws-cdk/core');
const app = new cdk.App();
const stack = new cdk.Stack(app, 'EventRuleStack');
const rule = new events.Rule(stack, 'MyRule', {
eventPattern: {
source: ['aws.ec2'],
detailType: ['EC2 Instance State-change Notification'],
detail: {
state: ['running']
}
}
});
rule.addTarget(new targets.LambdaFunction(myLambdaFunction));
app.synth();Scheduling Events
This code sample demonstrates how to create a scheduled EventBridge rule that triggers every 5 minutes. The rule targets a Lambda function.
const events = require('@aws-cdk/aws-events');
const targets = require('@aws-cdk/aws-events-targets');
const cdk = require('@aws-cdk/core');
const app = new cdk.App();
const stack = new cdk.Stack(app, 'ScheduledEventStack');
const rule = new events.Rule(stack, 'MyScheduledRule', {
schedule: events.Schedule.rate(cdk.Duration.minutes(5))
});
rule.addTarget(new targets.LambdaFunction(myLambdaFunction));
app.synth();The aws-sdk package is the official AWS SDK for JavaScript, which provides a comprehensive set of tools for interacting with AWS services, including EventBridge. Unlike @aws-cdk/aws-events, which is used for defining infrastructure as code, aws-sdk is used for making API calls to AWS services.
The serverless framework is a popular open-source framework for building and deploying serverless applications. It supports AWS Lambda and EventBridge, among other services. While @aws-cdk/aws-events focuses on infrastructure as code, serverless provides a higher-level abstraction for deploying serverless applications.
Pulumi is an infrastructure as code tool that supports multiple cloud providers, including AWS. It allows you to define and manage cloud resources using familiar programming languages. Pulumi can be used to manage EventBridge resources similarly to @aws-cdk/aws-events, but it offers a different approach and supports multiple clouds.
Amazon CloudWatch Events delivers a near real-time stream of system events that describe changes in AWS resources. For example, an AWS CodePipeline emits the State Change event when the pipeline changes it's state.
The EventRule construct defines a CloudWatch events rule which monitors an
event based on an event
pattern
and invoke event targets when the pattern is matched against a triggered
event. Event targets are objects that implement the IEventTarget interface.
Normally, you will use one of the source.onXxx(name[, target[, options]]) -> EventRule methods on the event source to define an event rule associated with
the specific activity. You can targets either via props, or add targets using
rule.addTarget.
For example, to define an rule that triggers a CodeBuild project build when a commit is pushed to the "master" branch of a CodeCommit repository:
const onCommitRule = repo.onCommit('OnCommitToMaster', project, 'master');
You can add additional targets, with optional input
transformer
using eventRule.addTarget(target[, input]). For example, we can add a SNS
topic target which formats a human-readable message for the commit.
For example, this adds an SNS topic as a target:
onCommitRule.addTarget(topic, {
template: 'A commit was pushed to the repository <repo> on branch <branch>',
pathsMap: {
branch: '$.detail.referenceName',
repo: '$.detail.repositoryName'
}
});
0.10.0 (2018-09-27)
This release introduces a better way to "escape" L2 constructs in case of missing features by adding the ability to add arbitrary overrides for resource properties:
const bucket = new s3.Bucket(this, 'L2Bucket');
// access L1
const bucketResource = bucket.findChild('Resource') as s3.cloudformation.BucketResource;
// strongly-typed overrides
bucketResource.propertyOverrides.bucketName = 'NewBucketName';
// weakly-typed overrides
bucketResource.addPropertyOverride('BucketName', 'NewerBucketName');
TagManager has changed. initialTags is now passed inside a props object.@aws-cdk/util is no longer available@aws-cdk/cfnspec: Updated [CloudFormation resource specification] to v2.8.0 ([@RomainMuller] in #767)
New Construct Libraries
@aws-cdk/aws-amazonmq@aws-cdk/aws-iot1clickNew Resource Types
Attribute Changes
Property Changes
AWS::ApiGateway::Deployment DeploymentCanarySettings (added)
AWS::ApiGateway::Method AuthorizationScopes (added)
AWS::ApiGateway::Stage AccessLogSetting (added)
AWS::ApiGateway::Stage CanarySetting (added)
AWS::AutoScaling::AutoScalingGroup LaunchTemplate (added)
AWS::CodeBuild::Project LogsConfig (added)
AWS::CodeBuild::Project SecondaryArtifacts (added)
AWS::CodeBuild::Project SecondarySources (added)
AWS::CodeDeploy::DeploymentGroup Ec2TagSet (added)
AWS::CodeDeploy::DeploymentGroup OnPremisesTagSet (added)
AWS::EC2::FlowLog LogDestination (added)
AWS::EC2::FlowLog LogDestinationType (added)
AWS::EC2::FlowLog DeliverLogsPermissionArn.Required (changed)
AWS::EC2::FlowLog LogGroupName.Required (changed)
AWS::EC2::VPCEndpoint IsPrivateDnsEnabled (deleted)
AWS::EC2::VPCEndpoint PrivateDnsEnabled (added)
AWS::EC2::VPCEndpoint RouteTableIds.DuplicatesAllowed (added)
AWS::EC2::VPCEndpoint SecurityGroupIds.DuplicatesAllowed (added)
AWS::EC2::VPCEndpoint SubnetIds.DuplicatesAllowed (added)
AWS::EC2::VPCEndpoint VPCEndpointType.UpdateType (changed)
AWS::ECS::Service SchedulingStrategy (added)
AWS::ECS::Service ServiceRegistries.UpdateType (changed)
AWS::ElastiCache::ReplicationGroup NodeGroupConfiguration.UpdateType (changed)
AWS::ElastiCache::ReplicationGroup NumNodeGroups.UpdateType (changed)
AWS::RDS::DBCluster EngineMode (added)
AWS::RDS::DBCluster ScalingConfiguration (added)
AWS::SageMaker::NotebookInstance LifecycleConfigName.UpdateType (changed)
Property Type Changes
AWS::ApiGateway::Deployment.AccessLogSetting (added)
AWS::ApiGateway::Deployment.CanarySetting (added)
AWS::ApiGateway::Deployment.DeploymentCanarySettings (added)
AWS::ApiGateway::Stage.AccessLogSetting (added)
AWS::ApiGateway::Stage.CanarySetting (added)
AWS::AutoScaling::AutoScalingGroup.LaunchTemplateSpecification (added)
AWS::CodeBuild::Project.CloudWatchLogsConfig (added)
AWS::CodeBuild::Project.LogsConfig (added)
AWS::CodeBuild::Project.S3LogsConfig (added)
AWS::CodeDeploy::DeploymentGroup.EC2TagSet (added)
AWS::CodeDeploy::DeploymentGroup.EC2TagSetListObject (added)
AWS::CodeDeploy::DeploymentGroup.OnPremisesTagSet (added)
AWS::CodeDeploy::DeploymentGroup.OnPremisesTagSetListObject (added)
AWS::EC2::SpotFleet.ClassicLoadBalancer (added)
AWS::EC2::SpotFleet.ClassicLoadBalancersConfig (added)
AWS::EC2::SpotFleet.FleetLaunchTemplateSpecification (added)
AWS::EC2::SpotFleet.LaunchTemplateConfig (added)
AWS::EC2::SpotFleet.LaunchTemplateOverrides (added)
AWS::EC2::SpotFleet.LoadBalancersConfig (added)
AWS::EC2::SpotFleet.TargetGroup (added)
AWS::EC2::SpotFleet.TargetGroupsConfig (added)
AWS::ECS::TaskDefinition.DockerVolumeConfiguration (added)
AWS::ECS::TaskDefinition.RepositoryCredentials (added)
AWS::ECS::TaskDefinition.Tmpfs (added)
AWS::Events::Rule.SqsParameters (added)
AWS::RDS::DBCluster.ScalingConfiguration (added)
AWS::ApiGateway::Deployment.StageDescription AccessLogSetting (added)
AWS::ApiGateway::Deployment.StageDescription CanarySetting (added)
AWS::ApiGateway::Method.Integration ConnectionId (added)
AWS::ApiGateway::Method.Integration ConnectionType (added)
AWS::ApiGateway::Method.Integration TimeoutInMillis (added)
AWS::ApiGateway::UsagePlan.ApiStage Throttle (added)
AWS::CodeBuild::Project.Artifacts ArtifactIdentifier (added)
AWS::CodeBuild::Project.Source SourceIdentifier (added)
AWS::CodeBuild::Project.VpcConfig SecurityGroupIds.Required (changed)
AWS::CodeBuild::Project.VpcConfig Subnets.Required (changed)
AWS::CodeBuild::Project.VpcConfig VpcId.Required (changed)
AWS::CodeDeploy::DeploymentGroup.EC2TagFilter Key.Documentation (changed)
AWS::CodeDeploy::DeploymentGroup.EC2TagFilter Type.Documentation (changed)
AWS::CodeDeploy::DeploymentGroup.EC2TagFilter Value.Documentation (changed)
AWS::CodeDeploy::DeploymentGroup.TagFilter Key.Documentation (changed)
AWS::CodeDeploy::DeploymentGroup.TagFilter Type.Documentation (changed)
AWS::CodeDeploy::DeploymentGroup.TagFilter Value.Documentation (changed)
AWS::EC2::SpotFleet.SpotFleetRequestConfigData InstanceInterruptionBehavior (added)
AWS::EC2::SpotFleet.SpotFleetRequestConfigData LaunchTemplateConfigs (added)
AWS::EC2::SpotFleet.SpotFleetRequestConfigData LoadBalancersConfig (added)
AWS::EC2::SpotFleet.SpotPlacement Tenancy (added)
AWS::ECS::Service.ServiceRegistry ContainerName (added)
AWS::ECS::Service.ServiceRegistry ContainerPort (added)
AWS::ECS::Service.ServiceRegistry Port.UpdateType (changed)
AWS::ECS::Service.ServiceRegistry RegistryArn.UpdateType (changed)
AWS::ECS::TaskDefinition.ContainerDefinition RepositoryCredentials (added)
AWS::ECS::TaskDefinition.LinuxParameters SharedMemorySize (added)
AWS::ECS::TaskDefinition.LinuxParameters Tmpfs (added)
AWS::ECS::TaskDefinition.Volume DockerVolumeConfiguration (added)
AWS::ElastiCache::ReplicationGroup.NodeGroupConfiguration NodeGroupId (added)
AWS::Events::Rule.Target SqsParameters (added)
AWS::RDS::OptionGroup.OptionConfiguration OptionSettings.DuplicatesAllowed (added)
AWS::RDS::OptionGroup.OptionConfiguration OptionSettings.ItemType (added)
AWS::RDS::OptionGroup.OptionConfiguration OptionSettings.Type (changed)
FAQs
Amazon EventBridge Construct Library
The npm package @aws-cdk/aws-events receives a total of 56,573 weekly downloads. As such, @aws-cdk/aws-events popularity was classified as popular.
We found that @aws-cdk/aws-events demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 4 open source maintainers collaborating on the project.
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