(Visual FoxPro) 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.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

LOCAL loRest
LOCAL lnBAutoReconnect
LOCAL lnSuccess
LOCAL loSbToken
LOCAL lcTopicOrQueueName
LOCAL loJson
LOCAL loJsonA
LOCAL loSbRequestBody
LOCAL loSbPath
LOCAL loSbResponseBody

* 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.
* For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.Rest')
loRest = CreateObject('Chilkat.Rest')
lnBAutoReconnect = 1
lnSuccess = loRest.Connect("<yournamespace>.servicebus.windows.net",443,1,lnBAutoReconnect)
IF (lnSuccess <> 1) THEN
    ? loRest.LastErrorText
    RELEASE loRest
    CANCEL
ENDIF

* ----------------------------------------------------------------------------------------------
* 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.
* For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.StringBuilder')
loSbToken = CreateObject('Chilkat.StringBuilder')
loSbToken.LoadFile("qa_data/tokens/serviceBusSas.txt","utf-8")

* Tell the REST object to use the Azure Shared Access Signature for authorization.
loSbToken.Prepend("SharedAccessSignature ")
loRest.AddHeader("Authorization",loSbToken.GetAsString())

* ----------------------------------------------------------------------------------------------

* Send to a topic (or queue) named "gilaMonster";
lcTopicOrQueueName = "gilaMonster"

* The HTTP request body contains JSON that contains multiple messages.
* For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.JsonObject')
loJson = CreateObject('Chilkat.JsonObject')
loJson.I = 0
loJson.UpdateString("messages[i].Body","This is the first message")
loJson.UpdateString("messages[i].BrokerProperties.Label","M1")
loJson.UpdateString("messages[i].BrokerProperties.TimeToLiveTimeSpan","0.00:00:40")

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

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

loJsonA = loJson.ArrayOf("messages")
loJsonA.EmitCompact = 0
? loJsonA.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"
* 	    }
* 	  }
* 	]

* For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.StringBuilder')
loSbRequestBody = CreateObject('Chilkat.StringBuilder')
loJsonA.EmitCompact = 1
loJsonA.EmitSb(loSbRequestBody)
RELEASE loJsonA

* Build the path..
* For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.StringBuilder')
loSbPath = CreateObject('Chilkat.StringBuilder')
loSbPath.Append("/")
loSbPath.Append(lcTopicOrQueueName)
loSbPath.Append("/messages")

* Add timeout and api-version query parameters.
loRest.AddQueryParam("timeout","20")

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

* For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.StringBuilder')
loSbResponseBody = CreateObject('Chilkat.StringBuilder')
lnSuccess = loRest.FullRequestSb("POST",loSbPath.GetAsString(),loSbRequestBody,loSbResponseBody)
IF (lnSuccess <> 1) THEN
    ? loRest.LastErrorText
    RELEASE loRest
    RELEASE loSbToken
    RELEASE loJson
    RELEASE loSbRequestBody
    RELEASE loSbPath
    RELEASE loSbResponseBody
    CANCEL
ENDIF

? "Response Status Code = " + STR(loRest.ResponseStatusCode)

* Check for a success response.
IF (loRest.ResponseStatusCode <> 201) THEN
    ? loRest.LastRequestStartLine
    ? loRest.LastRequestHeader
    ? loSbResponseBody.GetAsString()
    ? "Failed."
    RELEASE loRest
    RELEASE loSbToken
    RELEASE loJson
    RELEASE loSbRequestBody
    RELEASE loSbPath
    RELEASE loSbResponseBody
    CANCEL
ENDIF

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

? "Success."

RELEASE loRest
RELEASE loSbToken
RELEASE loJson
RELEASE loSbRequestBody
RELEASE loSbPath
RELEASE loSbResponseBody