(Unicode 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 <C_CkRestW.h>
#include <C_CkStringBuilderW.h>
#include <C_CkJsonObjectW.h>
#include <C_CkJsonArrayW.h>

void ChilkatSample(void)
    {
    HCkRestW rest;
    BOOL bAutoReconnect;
    BOOL success;
    HCkStringBuilderW sbToken;
    const wchar_t *topicOrQueueName;
    HCkJsonObjectW json;
    HCkJsonArrayW jsonA;
    HCkStringBuilderW sbRequestBody;
    HCkStringBuilderW sbPath;
    HCkStringBuilderW sbResponseBody;

    // 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 = CkRestW_Create();
    bAutoReconnect = TRUE;
    success = CkRestW_Connect(rest,L"<yournamespace>.servicebus.windows.net",443,TRUE,bAutoReconnect);
    if (success != TRUE) {
        wprintf(L"%s\n",CkRestW_lastErrorText(rest));
        CkRestW_Dispose(rest);
        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.
    sbToken = CkStringBuilderW_Create();
    CkStringBuilderW_LoadFile(sbToken,L"qa_data/tokens/serviceBusSas.txt",L"utf-8");

    // Tell the REST object to use the Azure Shared Access Signature for authorization.
    CkStringBuilderW_Prepend(sbToken,L"SharedAccessSignature ");
    CkRestW_AddHeader(rest,L"Authorization",CkStringBuilderW_getAsString(sbToken));

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

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

    // The HTTP request body contains JSON that contains multiple messages.
    json = CkJsonObjectW_Create();
    CkJsonObjectW_putI(json,0);
    CkJsonObjectW_UpdateString(json,L"messages[i].Body",L"This is the first message");
    CkJsonObjectW_UpdateString(json,L"messages[i].BrokerProperties.Label",L"M1");
    CkJsonObjectW_UpdateString(json,L"messages[i].BrokerProperties.TimeToLiveTimeSpan",L"0.00:00:40");

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

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

    jsonA = CkJsonObjectW_ArrayOf(json,L"messages");
    CkJsonArrayW_putEmitCompact(jsonA,FALSE);
    wprintf(L"%s\n",CkJsonArrayW_emit(jsonA));

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

    sbRequestBody = CkStringBuilderW_Create();
    CkJsonArrayW_putEmitCompact(jsonA,TRUE);
    CkJsonArrayW_EmitSb(jsonA,sbRequestBody);
    CkJsonArrayW_Dispose(jsonA);

    // Build the path..
    sbPath = CkStringBuilderW_Create();
    CkStringBuilderW_Append(sbPath,L"/");
    CkStringBuilderW_Append(sbPath,topicOrQueueName);
    CkStringBuilderW_Append(sbPath,L"/messages");

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

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

    sbResponseBody = CkStringBuilderW_Create();
    success = CkRestW_FullRequestSb(rest,L"POST",CkStringBuilderW_getAsString(sbPath),sbRequestBody,sbResponseBody);
    if (success != TRUE) {
        wprintf(L"%s\n",CkRestW_lastErrorText(rest));
        CkRestW_Dispose(rest);
        CkStringBuilderW_Dispose(sbToken);
        CkJsonObjectW_Dispose(json);
        CkStringBuilderW_Dispose(sbRequestBody);
        CkStringBuilderW_Dispose(sbPath);
        CkStringBuilderW_Dispose(sbResponseBody);
        return;
    }

    wprintf(L"Response Status Code = %d\n",CkRestW_getResponseStatusCode(rest));

    // Check for a success response.
    if (CkRestW_getResponseStatusCode(rest) != 201) {
        wprintf(L"%s\n",CkRestW_lastRequestStartLine(rest));
        wprintf(L"%s\n",CkRestW_lastRequestHeader(rest));
        wprintf(L"%s\n",CkStringBuilderW_getAsString(sbResponseBody));
        wprintf(L"Failed.\n");
        CkRestW_Dispose(rest);
        CkStringBuilderW_Dispose(sbToken);
        CkJsonObjectW_Dispose(json);
        CkStringBuilderW_Dispose(sbRequestBody);
        CkStringBuilderW_Dispose(sbPath);
        CkStringBuilderW_Dispose(sbResponseBody);
        return;
    }

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

    wprintf(L"Success.\n");


    CkRestW_Dispose(rest);
    CkStringBuilderW_Dispose(sbToken);
    CkJsonObjectW_Dispose(json);
    CkStringBuilderW_Dispose(sbRequestBody);
    CkStringBuilderW_Dispose(sbPath);
    CkStringBuilderW_Dispose(sbResponseBody);

    }