@aws-lambda-powertools/idempotency/lib/esm/config/EnvironmentVariablesService.js

The idempotency package for the Powertools for AWS Lambda (TypeScript) library. It provides options to make your Lambda functions idempotent and safe to retry.

import { EnvironmentVariablesService as CommonEnvironmentVariablesService } from '@aws-lambda-powertools/commons';
/**
 * Class EnvironmentVariablesService
 *
 * This class is used to return environment variables that are available in the runtime of
 * the current Lambda invocation.
 * These variables can be a mix of runtime environment variables set by AWS and
 * variables that can be set by the developer additionally.
 *
 * @class
 * @extends {CommonEnvironmentVariablesService}
 * @see https://docs.aws.amazon.com/lambda/latest/dg/configuration-envvars.html#configuration-envvars-runtime
 * @see https://docs.powertools.aws.dev/lambda/typescript/latest/#environment-variables
 */
class EnvironmentVariablesService extends CommonEnvironmentVariablesService {
    // Reserved environment variables
    functionNameVariable = 'AWS_LAMBDA_FUNCTION_NAME';
    idempotencyDisabledVariable = 'POWERTOOLS_IDEMPOTENCY_DISABLED';
    /**
     * It returns the value of the AWS_LAMBDA_FUNCTION_NAME environment variable.
     *
     * @returns {string}
     */
    getFunctionName() {
        return this.get(this.functionNameVariable);
    }
    /**
     * It returns whether the idempotency feature is enabled or not.
     *
     * Reads the value of the POWERTOOLS_IDEMPOTENCY_DISABLED environment variable.
     *
     * @returns {boolean}
     */
    getIdempotencyEnabled() {
        return !this.isValueTrue(this.get(this.idempotencyDisabledVariable));
    }
}
export { EnvironmentVariablesService };