@webda/aws/lib/services/lambdacaller.js

Webda AWS Services implementation

import { Lambda } from "@aws-sdk/client-lambda";
import { Runner, RunnerParameters } from "@webda/async";
import { AWSServiceParameters } from "./aws-mixin.js";
/**
 *
 */
class LambdaCallerParameters extends AWSServiceParameters(RunnerParameters) {
}
/**
 * A service that calls a Lambda function and retrieve its result
 *
 * @WebdaModda
 */
class LambdaCaller extends Runner {
    /**
     * @inheritdoc
     */
    launchAction(action, info) {
        // events.Records[0].eventSource
        // Use the AWSEvents framework
        return this.execute({
            command: "launch",
            service: info.JOB_ORCHESTRATOR,
            method: "runWebdaAsyncAction",
            action,
            args: [info],
            // We also put the value in JOB_INFO for other type of runner
            JOB_INFO: info
        }, true);
    }
    /**
     * @inheritdoc
     */
    loadParameters(params) {
        return new LambdaCallerParameters(params);
    }
    /**
     * @inheritdoc
     */
    resolve() {
        super.resolve();
        this.client = new Lambda(this.parameters);
        return this;
    }
    /**
     * Execute the Lambda function
     * @param params for the call
     * @param async wait for Lambda result
     * @param arn function to call default to the one from configuration
     * @returns
     */
    async execute(params = {}, async = false, arn = this.parameters.arn) {
        return JSON.parse((await this.client.invoke({
            FunctionName: arn,
            ClientContext: null,
            InvocationType: async ? "Event" : "RequestResponse",
            LogType: "None",
            Payload: Buffer.from(JSON.stringify(params))
        })).Payload.toString());
    }
}
export { LambdaCaller };
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