Chilkat2-Python

Azure Service Bus - Send Message to Topic

See more Azure Service Bus Examples

Example code showing how to send a message to an Azure Service Bus 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())

# ----------------------------------------------------------------------------------------------

# The code for sending to a topic is identical to the code sending to a queue.
# The only difference is that a topic name (or topic path) is used instead of queue name/path.

# Send to a topic named "gilaMonster";
topicName = "gilaMonster"

# The HTTP request body contains the content of the message sent to the topic.
sbRequestBody = chilkat2.StringBuilder()
sbRequestBody.Append("Hello, I'm a gila monster!")

# Build the path..
sbPath = chilkat2.StringBuilder()
sbPath.Append("/")
sbPath.Append(topicName)
sbPath.Append("/messages")

# Add timeout and api-version query parameters.
rest.AddQueryParam("timeout","20")
rest.AddQueryParam("api-version","2013-08")

# Standard brokered message properties are placed in a BrokerProperties HTTP header. 
# The broker properties must be serialized in JSON format. To specify a TimeToLive value of 3600 seconds 
# and to add a message label "M1" to the message..
json = chilkat2.JsonObject()
json.AppendInt("TimeToLive",3600)
json.AppendString("Label","A123")
rest.AddHeader("BrokerProperties",json.Emit())

# To add custom properties, such as "Priority" and "Color"
rest.AddHeader("Priority","High")
rest.AddHeader("Color","pink")

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.")