(C++) Azure Service Bus - Send Batch of Messages to Topic or Queue

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

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#include <CkRest.h>
#include <CkStringBuilder.h>
#include <CkJsonObject.h>
#include <CkJsonArray.h>

void ChilkatSample(void)
    {
    // 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.
    CkRest rest;
    bool bAutoReconnect = true;
    bool success = rest.Connect("<yournamespace>.servicebus.windows.net",443,true,bAutoReconnect);
    if (success != true) {
        std::cout << rest.lastErrorText() << "\r\n";
        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.
    CkStringBuilder sbToken;
    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";
    const char *topicOrQueueName = "gilaMonster";

    // The HTTP request body contains JSON that contains multiple messages.
    CkJsonObject json;
    json.put_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.put_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.put_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");

    CkJsonArray *jsonA = json.ArrayOf("messages");
    jsonA->put_EmitCompact(false);
    std::cout << jsonA->emit() << "\r\n";

    // 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"
    // 	    }
    // 	  }
    // 	]

    CkStringBuilder sbRequestBody;
    jsonA->put_EmitCompact(true);
    jsonA->EmitSb(sbRequestBody);
    delete jsonA;

    // Build the path..
    CkStringBuilder sbPath;
    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");

    CkStringBuilder sbResponseBody;
    success = rest.FullRequestSb("POST",sbPath.getAsString(),sbRequestBody,sbResponseBody);
    if (success != true) {
        std::cout << rest.lastErrorText() << "\r\n";
        return;
    }

    std::cout << "Response Status Code = " << rest.get_ResponseStatusCode() << "\r\n";

    // Check for a success response.
    if (rest.get_ResponseStatusCode() != 201) {
        std::cout << rest.lastRequestStartLine() << "\r\n";
        std::cout << rest.lastRequestHeader() << "\r\n";
        std::cout << sbResponseBody.getAsString() << "\r\n";
        std::cout << "Failed." << "\r\n";
        return;
    }

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

    std::cout << "Success." << "\r\n";
    }