constructor()

in source/patterns/@aws-solutions-constructs/aws-lambda-s3/lib/index.ts [110:175]
54 lines of code
11 McCabe index (conditional complexity)

    constructor(scope: Construct, id: string, props: LambdaToS3Props) {
      super(scope, id);
      defaults.CheckProps(props);

      let bucket: s3.IBucket;

      if (props.deployVpc || props.existingVpc) {
        this.vpc = defaults.buildVpc(scope, {
          defaultVpcProps: defaults.DefaultIsolatedVpcProps(),
          existingVpc: props.existingVpc,
          userVpcProps: props.vpcProps,
          constructVpcProps: {
            enableDnsHostnames: true,
            enableDnsSupport: true,
          },
        });

        defaults.AddAwsServiceEndpoint(scope, this.vpc, defaults.ServiceEndpointTypes.S3);
      }

      // Setup the Lambda function
      this.lambdaFunction = defaults.buildLambdaFunction(this, {
        existingLambdaObj: props.existingLambdaObj,
        lambdaFunctionProps: props.lambdaFunctionProps,
        vpc: this.vpc,
      });

      // Setup S3 Bucket
      if (!props.existingBucketObj) {
        [this.s3Bucket, this.s3LoggingBucket] = defaults.buildS3Bucket(this, {
          bucketProps: props.bucketProps,
          loggingBucketProps: props.loggingBucketProps,
          logS3AccessLogs: props.logS3AccessLogs
        });
        bucket = this.s3Bucket;
      } else {
        bucket = props.existingBucketObj;
      }

      this.s3BucketInterface = bucket;

      // Configure environment variables
      const bucketEnvironmentVariableName = props.bucketEnvironmentVariableName || 'S3_BUCKET_NAME';
      this.lambdaFunction.addEnvironment(bucketEnvironmentVariableName, bucket.bucketName);

      // Add the requested or default bucket permissions
      if (props.bucketPermissions) {
        if (props.bucketPermissions.includes('Delete')) {
          bucket.grantDelete(this.lambdaFunction.grantPrincipal);
        }
        if (props.bucketPermissions.includes('Put')) {
          bucket.grantPut(this.lambdaFunction.grantPrincipal);
        }
        if (props.bucketPermissions.includes('Read')) {
          bucket.grantRead(this.lambdaFunction.grantPrincipal);
        }
        if (props.bucketPermissions.includes('ReadWrite')) {
          bucket.grantReadWrite(this.lambdaFunction.grantPrincipal);
        }
        if (props.bucketPermissions.includes('Write')) {
          bucket.grantWrite(this.lambdaFunction.grantPrincipal);
        }
      } else {
        bucket.grantReadWrite(this.lambdaFunction.grantPrincipal);
      }
    }