com.sap.cds.feature.messaging.mq.client.MessageQueuingManagmentClient Maven / Gradle / Ivy

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Message Queuing feature for CDS Services Java

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/**************************************************************************
 * (C) 2019-2021 SAP SE or an SAP affiliate company. All rights reserved. *
 **************************************************************************/
package com.sap.cds.feature.messaging.mq.client;

import java.io.IOException;
import java.net.URLEncoder;
import java.nio.charset.StandardCharsets;
import java.util.Map;

import com.fasterxml.jackson.databind.node.ObjectNode;
import com.sap.cds.integration.cloudsdk.rest.client.JsonRestClient;
import com.sap.cds.services.environment.ServiceBinding;
import com.sap.cloud.sdk.cloudplatform.connectivity.OnBehalfOf;

/**
 * Implementation of the enterprise messaging management API.
 */
public class MessageQueuingManagmentClient extends JsonRestClient {

	private static final String API_BASE = "/v1/management";
	private static final String API_QUEUE = API_BASE + "/queues/%s";
	private static final String API_SUBSCRIBE = API_BASE + "/queues/%s/subscriptions/topics/%s";

	public MessageQueuingManagmentClient(ServiceBinding binding) {
		super(getManagementApiUrlFromBinding(binding), binding, OnBehalfOf.TECHNICAL_USER_PROVIDER);
	}

	@SuppressWarnings("unchecked")
	private static String getManagementApiUrlFromBinding(ServiceBinding binding) {
		return (String) ((Map) binding.getCredentials().get("management")).get("url");
	}

	public void removeQueue(String name) throws IOException {
		String encName = URLEncoder.encode(name, StandardCharsets.UTF_8.toString());
		deleteRequest(String.format(API_QUEUE, encName));
	}

	public void createQueue(String name, Map properties) throws IOException {

		ObjectNode data = mapper.createObjectNode();
		properties.forEach((key, value) -> {
			data.put(key, value);
		});

		String encName = URLEncoder.encode(name, StandardCharsets.UTF_8.toString());

		putRequest(String.format(API_QUEUE, encName), data);
	}

	public void createQueueSubscription(String queue, String topic) throws IOException {
		String encQueue = URLEncoder.encode(queue, StandardCharsets.UTF_8.toString());
		String encTopic = URLEncoder.encode(topic, StandardCharsets.UTF_8.toString());
		putRequest(String.format(API_SUBSCRIBE, encQueue, encTopic), null);
	}
}