Java

Azure Service Bus - Send Message to Topic

See more Azure Service Bus Examples

Example code showing how to send a message to an Azure Service Bus Topic. Chilkat2 Java

import com.chilkatsoft.chilkat2.ChilkatException;
import com.chilkatsoft.chilkat2.JsonObject;
import com.chilkatsoft.chilkat2.Rest;
import com.chilkatsoft.chilkat2.StringBuilder;

public class ChilkatExample {

    public static void main(String[] args) {
        // Note: Requires Chilkat v9.5.0.65 or greater.

        // This requires the Chilkat API to have been previously unlocked.
        // See Global Unlock Sample for sample code.

        // Make the initial connection.
        // A single REST object, once connected, can be used for many Azure Service Bus REST API calls.
        // The auto-reconnect indicates that if the already-established HTTPS connection is closed,
        // then it will be automatically re-established as needed.
        Rest rest = new Rest();
        boolean bAutoReconnect = true;
        try {
            rest.connect("<yournamespace>.servicebus.windows.net", 443, true, bAutoReconnect);
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        // ----------------------------------------------------------------------------------------------
        // The code above this comment could be placed inside a function/subroutine within the application
        // because the connection does not need to be made for every request.  Once the connection is made
        // the app may send many requests..
        // ----------------------------------------------------------------------------------------------

        // Let's load a previously computed SAS token and use it.
        // See Azure Shared Access Signature for an example to genenerate an Azure SAS token.
        StringBuilder sbToken = new StringBuilder();
        sbToken.loadFile("qa_data/tokens/serviceBusSas.txt", "utf-8");

        // Tell the REST object to use the Azure Shared Access Signature for authorization.
        sbToken.prepend("SharedAccessSignature ");
        rest.addHeader("Authorization", sbToken.getAsString());

        // ----------------------------------------------------------------------------------------------

        // The code for sending to a topic is identical to the code sending to a queue.
        // The only difference is that a topic name (or topic path) is used instead of queue name/path.

        // Send to a topic named "gilaMonster";
        String topicName = "gilaMonster";

        // The HTTP request body contains the content of the message sent to the topic.
        StringBuilder sbRequestBody = new StringBuilder();
        sbRequestBody.append("Hello, I'm a gila monster!");

        // Build the path..
        StringBuilder sbPath = new StringBuilder();
        sbPath.append("/");
        sbPath.append(topicName);
        sbPath.append("/messages");

        // Add timeout and api-version query parameters.
        rest.addQueryParam("timeout", "20");
        rest.addQueryParam("api-version", "2013-08");

        // Standard brokered message properties are placed in a BrokerProperties HTTP header.
        // The broker properties must be serialized in JSON format. To specify a TimeToLive value of 3600 seconds
        // and to add a message label "M1" to the message..
        JsonObject json = new JsonObject();
        json.appendInt("TimeToLive", 3600);
        json.appendString("Label", "A123");
        rest.addHeader("BrokerProperties", json.emit());

        // To add custom properties, such as "Priority" and "Color"
        rest.addHeader("Priority", "High");
        rest.addHeader("Color", "pink");

        StringBuilder sbResponseBody = new StringBuilder();
        try {
            rest.fullRequestSb("POST", sbPath.getAsString(), sbRequestBody, sbResponseBody);
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        System.out.println("Response Status Code = " + rest.getResponseStatusCode());

        // Check for a success response.
        if (rest.getResponseStatusCode() != 201) {
            System.out.println(rest.getLastRequestStartLine());
            System.out.println(rest.getLastRequestHeader());
            System.out.println(sbResponseBody.getAsString());
            System.out.println("Failed.");
            return;
        }

        // If successful, the 201 response will have no response body.

        System.out.println("Success.");
    }
}