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

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

Note: This example requires Chilkat v9.5.0.65 or greater.

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#include <C_CkRest.h>
#include <C_CkStringBuilder.h>
#include <C_CkJsonObject.h>
#include <C_CkJsonArray.h>

void ChilkatSample(void)
    {
    HCkRest rest;
    BOOL bAutoReconnect;
    BOOL success;
    HCkStringBuilder sbToken;
    const char *topicOrQueueName;
    HCkJsonObject json;
    HCkJsonArray jsonA;
    HCkStringBuilder sbRequestBody;
    HCkStringBuilder sbPath;
    HCkStringBuilder 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 = CkRest_Create();
    bAutoReconnect = TRUE;
    success = CkRest_Connect(rest,"<yournamespace>.servicebus.windows.net",443,TRUE,bAutoReconnect);
    if (success != TRUE) {
        printf("%s\n",CkRest_lastErrorText(rest));
        CkRest_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 = CkStringBuilder_Create();
    CkStringBuilder_LoadFile(sbToken,"qa_data/tokens/serviceBusSas.txt","utf-8");

    //  Tell the REST object to use the Azure Shared Access Signature for authorization.
    CkStringBuilder_Prepend(sbToken,"SharedAccessSignature ");
    CkRest_AddHeader(rest,"Authorization",CkStringBuilder_getAsString(sbToken));

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

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

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

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

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

    jsonA = CkJsonObject_ArrayOf(json,"messages");
    CkJsonArray_putEmitCompact(jsonA,FALSE);
    printf("%s\n",CkJsonArray_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 = CkStringBuilder_Create();
    CkJsonArray_putEmitCompact(jsonA,TRUE);
    CkJsonArray_EmitSb(jsonA,sbRequestBody);
    CkJsonArray_Dispose(jsonA);

    //  Build the path..
    sbPath = CkStringBuilder_Create();
    CkStringBuilder_Append(sbPath,"/");
    CkStringBuilder_Append(sbPath,topicOrQueueName);
    CkStringBuilder_Append(sbPath,"/messages");

    //  Add timeout and api-version query parameters.
    CkRest_AddQueryParam(rest,"timeout","60");

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

    sbResponseBody = CkStringBuilder_Create();
    success = CkRest_FullRequestSb(rest,"POST",CkStringBuilder_getAsString(sbPath),sbRequestBody,sbResponseBody);
    if (success != TRUE) {
        printf("%s\n",CkRest_lastErrorText(rest));
        CkRest_Dispose(rest);
        CkStringBuilder_Dispose(sbToken);
        CkJsonObject_Dispose(json);
        CkStringBuilder_Dispose(sbRequestBody);
        CkStringBuilder_Dispose(sbPath);
        CkStringBuilder_Dispose(sbResponseBody);
        return;
    }

    printf("Response Status Code = %d\n",CkRest_getResponseStatusCode(rest));

    //  Check for a success response.
    if (CkRest_getResponseStatusCode(rest) != 201) {
        printf("%s\n",CkRest_lastRequestStartLine(rest));
        printf("%s\n",CkRest_lastRequestHeader(rest));
        printf("%s\n",CkStringBuilder_getAsString(sbResponseBody));
        printf("Failed.\n");
        CkRest_Dispose(rest);
        CkStringBuilder_Dispose(sbToken);
        CkJsonObject_Dispose(json);
        CkStringBuilder_Dispose(sbRequestBody);
        CkStringBuilder_Dispose(sbPath);
        CkStringBuilder_Dispose(sbResponseBody);
        return;
    }

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

    printf("Success.\n");


    CkRest_Dispose(rest);
    CkStringBuilder_Dispose(sbToken);
    CkJsonObject_Dispose(json);
    CkStringBuilder_Dispose(sbRequestBody);
    CkStringBuilder_Dispose(sbPath);
    CkStringBuilder_Dispose(sbResponseBody);

    }

 

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