private createLambda()

in lib/template/pattern/lambda-pattern.ts [53:88]
33 lines of code
11 McCabe index (conditional complexity)

    private createLambda(lambdaName: string, lambdaPath: string, lambdaRole: iam.Role, props: LambdaPatternConstructProps): lambda.Function {
        var layers = this.loadLayers(lambdaName, props.layerArns!);

        const lambdaFunction = new lambda.Function(this, lambdaName, {
            functionName: lambdaName,
            code: lambda.Code.fromAsset(lambdaPath),
            handler: props.handler != undefined ? props.handler : 'handler.handle',
            runtime: lambda.Runtime.PYTHON_3_7,
            timeout: props.timeout != undefined ? props.timeout : cdk.Duration.seconds(60 * 3),
            role: lambdaRole,
            environment: props.environments,
            layers: layers.length > 0 ? layers : undefined,
        });

        if (props.bucket != undefined) {
            const filterList: any[] = [];
            if (props.bucketPrefix != undefined && props.bucketPrefix.length > 0) {
                for (var item of props.bucketPrefix) {
                    lambdaFunction.addEventSource(new S3EventSource(props.bucket, {
                        events: [s3.EventType.OBJECT_CREATED_PUT, s3.EventType.OBJECT_CREATED_COPY],
                        filters: [{ prefix: item }]
                    }));
                }
            }
            if (props.bucketSuffix != undefined && props.bucketSuffix.length > 0) {
                for (var item of props.bucketSuffix) {
                    lambdaFunction.addEventSource(new S3EventSource(props.bucket, {
                        events: [s3.EventType.OBJECT_CREATED_PUT, s3.EventType.OBJECT_CREATED_COPY],
                        filters: [{ suffix: item }]
                    }));
                }
            }
        }

        return lambdaFunction;
    }