Node.js

Azure Service Bus - Send Batch of Messages to Topic or Queue

See more Azure Service Bus Examples

Shows how to send a batch of messages to a service bus queue or topic. Node.js

NODEJS_PRELUDE

function chilkatExample() {

    var success = false;

    //  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.
    var rest = new chilkat.Rest();
    var bAutoReconnect = true;
    success = rest.Connect("<yournamespace>.servicebus.windows.net",443,true,bAutoReconnect);
    if (success !== true) {
        console.log(rest.LastErrorText);
        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.
    var sbToken = new chilkat.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());

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

    //  Send to a topic (or queue) named "gilaMonster";
    var topicOrQueueName = "gilaMonster";

    //  The HTTP request body contains JSON that contains multiple messages.
    var json = new chilkat.JsonObject();
    json.I = 0;
    json.UpdateString("messages[i].Body","This is the first message");
    json.UpdateString("messages[i].BrokerProperties.Label","M1");
    json.UpdateString("messages[i].BrokerProperties.TimeToLiveTimeSpan","0.00:00:40");

    json.I = 1;
    json.UpdateString("messages[i].Body","This is the second message");
    json.UpdateString("messages[i].BrokerProperties.Label","M2");
    json.UpdateString("messages[i].UserProperties.Priority","Low");

    json.I = 2;
    json.UpdateString("messages[i].Body","This is the third message");
    json.UpdateString("messages[i].BrokerProperties.Label","M3");
    json.UpdateString("messages[i].UserProperties.Priority","Medium");
    json.UpdateString("messages[i].UserProperties.Customer","ABC");

    // jsonA: JsonArray
    var jsonA = json.ArrayOf("messages");
    jsonA.EmitCompact = false;
    console.log(jsonA.Emit());

    //  The following JSON array is produced by the above code:

    //  	[
    //  	  {
    //  	    "Body": "This is the first message",
    //  	    "BrokerProperties": {
    //  	      "Label": "M1",
    //  	      "TimeToLiveTimeSpan": "0.00:00:40"
    //  	    }
    //  	  },
    //  	  {
    //  	    "Body": "This is the second message",
    //  	    "BrokerProperties": {
    //  	      "Label": "M2"
    //  	    },
    //  	    "UserProperties": {
    //  	      "Priority": "Low"
    //  	    }
    //  	  },
    //  	  {
    //  	    "Body": "This is the third message",
    //  	    "BrokerProperties": {
    //  	      "Label": "M3"
    //  	    },
    //  	    "UserProperties": {
    //  	      "Priority": "Medium",
    //  	      "Customer": "ABC"
    //  	    }
    //  	  }
    //  	]

    var sbRequestBody = new chilkat.StringBuilder();
    jsonA.EmitCompact = true;
    jsonA.EmitSb(sbRequestBody);

    //  Build the path..
    var sbPath = new chilkat.StringBuilder();
    sbPath.Append("/");
    sbPath.Append(topicOrQueueName);
    sbPath.Append("/messages");

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

    //  The Content-Type should be "application/vnd.microsoft.servicebus.json"
    rest.AddHeader("Content-Type","application/vnd.microsoft.servicebus.json");

    var sbResponseBody = new chilkat.StringBuilder();
    success = rest.FullRequestSb("POST",sbPath.GetAsString(),sbRequestBody,sbResponseBody);
    if (success !== true) {
        console.log(rest.LastErrorText);
        return;
    }

    console.log("Response Status Code = " + rest.ResponseStatusCode);

    //  Check for a success response.
    if (rest.ResponseStatusCode !== 201) {
        console.log(rest.LastRequestStartLine);
        console.log(rest.LastRequestHeader);
        console.log(sbResponseBody.GetAsString());
        console.log("Failed.");
        return;
    }

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

    console.log("Success.");

}

chilkatExample();