pl.chilldev.commons.aws.sqs.QueueHandler Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of commons-aws Show documentation

Helper components for working with Amazon Web Services.

There is a newer version: 0.4.4

// Generated by delombok at Thu Nov 16 16:28:10 UTC 2017
/**
 * This file is part of the ChillDev-Commons.
 *
 * @license http://mit-license.org/ The MIT license
 * @copyright 2017 © by Rafał Wrzeszcz - Wrzasq.pl.
 */
package pl.chilldev.commons.aws.sqs;

import java.util.function.Consumer;
import com.amazonaws.services.sqs.AmazonSQS;
import com.amazonaws.services.sqs.AmazonSQSClientBuilder;
import com.amazonaws.services.sqs.model.Message;

/**
 * SQS queue handler.
 */
public class QueueHandler {
    /**
     * AWS SQS client.
     */
    private AmazonSQS sqs;
    /**
     * SQS queue URL.
     */
    private String queueUrl;
    /**
     * Message consumer.
     */
    private Consumer messageHandler;

    /**
     * Initializes handler with the default SQS client.
     *
     * 
     * This is a simplified version for AWS internal services, like AWS Lambda, which relies on environment
     * permissions.
     * 
     *
     * @param queueUrl SQS queue URL.
     * @param messageHandler Single message consumer.
     */
    public QueueHandler(String queueUrl, Consumer messageHandler) {
        this(AmazonSQSClientBuilder.standard().build(), queueUrl, messageHandler);
    }

    /**
     * Processes queue messages.
     */
    public void process() {
        for (Message message : this.sqs.receiveMessage(this.queueUrl).getMessages()) {
            this.messageHandler.accept(message);
            this.sqs.deleteMessage(this.queueUrl, message.getReceiptHandle());
        }
    }

    @java.beans.ConstructorProperties({"sqs", "queueUrl", "messageHandler"})
    @SuppressWarnings("all")
    @javax.annotation.Generated("lombok")
    public QueueHandler(final AmazonSQS sqs, final String queueUrl, final Consumer messageHandler) {
        this.sqs = sqs;
        this.queueUrl = queueUrl;
        this.messageHandler = messageHandler;
    }
}