@aws-cdk/aws-sns-subscriptions
Version:
CDK Subscription Constructs for AWS SNS
77 lines • 9.16 kB
JavaScript
;
var _a;
Object.defineProperty(exports, "__esModule", { value: true });
exports.LambdaSubscription = void 0;
const jsiiDeprecationWarnings = require("../.warnings.jsii.js");
const JSII_RTTI_SYMBOL_1 = Symbol.for("jsii.rtti");
const iam = require("@aws-cdk/aws-iam");
const sns = require("@aws-cdk/aws-sns");
const core_1 = require("@aws-cdk/core");
// keep this import separate from other imports to reduce chance for merge conflicts with v2-main
// eslint-disable-next-line no-duplicate-imports, import/order
const core_2 = require("@aws-cdk/core");
/**
* Use a Lambda function as a subscription target
*/
class LambdaSubscription {
constructor(fn, props = {}) {
this.fn = fn;
this.props = props;
try {
jsiiDeprecationWarnings._aws_cdk_aws_sns_subscriptions_LambdaSubscriptionProps(props);
}
catch (error) {
if (process.env.JSII_DEBUG !== "1" && error.name === "DeprecationError") {
Error.captureStackTrace(error, LambdaSubscription);
}
throw error;
}
}
/**
* Returns a configuration for a Lambda function to subscribe to an SNS topic
*/
bind(topic) {
// Create subscription under *consuming* construct to make sure it ends up
// in the correct stack in cases of cross-stack subscriptions.
if (!core_2.Construct.isConstruct(this.fn)) {
throw new Error('The supplied lambda Function object must be an instance of Construct');
}
this.fn.addPermission(`AllowInvoke:${core_1.Names.nodeUniqueId(topic.node)}`, {
sourceArn: topic.topicArn,
principal: new iam.ServicePrincipal('sns.amazonaws.com'),
});
// if the topic and function are created in different stacks
// then we need to make sure the topic is created first
if (topic instanceof sns.Topic && topic.stack !== this.fn.stack) {
this.fn.stack.addDependency(topic.stack);
}
return {
subscriberScope: this.fn,
subscriberId: topic.node.id,
endpoint: this.fn.functionArn,
protocol: sns.SubscriptionProtocol.LAMBDA,
filterPolicy: this.props.filterPolicy,
region: this.regionFromArn(topic),
deadLetterQueue: this.props.deadLetterQueue,
};
}
regionFromArn(topic) {
// no need to specify `region` for topics defined within the same stack.
if (topic instanceof sns.Topic) {
if (topic.stack !== this.fn.stack) {
// only if we know the region, will not work for
// env agnostic stacks
if (!core_1.Token.isUnresolved(topic.env.region) &&
(topic.env.region !== this.fn.env.region)) {
return topic.env.region;
}
}
return undefined;
}
return core_1.Stack.of(topic).splitArn(topic.topicArn, core_1.ArnFormat.SLASH_RESOURCE_NAME).region;
}
}
exports.LambdaSubscription = LambdaSubscription;
_a = JSII_RTTI_SYMBOL_1;
LambdaSubscription[_a] = { fqn: "@aws-cdk/aws-sns-subscriptions.LambdaSubscription", version: "1.204.0" };
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