Chilkat2-Python

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. Chilkat2-Python

import sys
import chilkat2

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.
rest = chilkat2.Rest()
bAutoReconnect = True
success = rest.Connect("<yournamespace>.servicebus.windows.net",443,True,bAutoReconnect)
if (success != True):
    print(rest.LastErrorText)
    sys.exit()

# ----------------------------------------------------------------------------------------------
# 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 = chilkat2.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";
topicOrQueueName = "gilaMonster"

# The HTTP request body contains JSON that contains multiple messages.
json = chilkat2.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 is a CkJsonArray
jsonA = json.ArrayOf("messages")
jsonA.EmitCompact = False
print(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"
# 	    }
# 	  }
# 	]

sbRequestBody = chilkat2.StringBuilder()
jsonA.EmitCompact = True
jsonA.EmitSb(sbRequestBody)

# Build the path..
sbPath = chilkat2.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")

sbResponseBody = chilkat2.StringBuilder()
success = rest.FullRequestSb("POST",sbPath.GetAsString(),sbRequestBody,sbResponseBody)
if (success != True):
    print(rest.LastErrorText)
    sys.exit()

print("Response Status Code = " + str(rest.ResponseStatusCode))

# Check for a success response.
if (rest.ResponseStatusCode != 201):
    print(rest.LastRequestStartLine)
    print(rest.LastRequestHeader)
    print(sbResponseBody.GetAsString())
    print("Failed.")
    sys.exit()

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

print("Success.")