(Ruby) Azure Service Bus - Send Message to Topic

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Example code showing how to send a message to an Azure Service Bus Topic.

Chilkat Ruby Downloads install from rubygems.org gem install chilkat or download... Ruby Library for Windows, MacOS, Linux, Alpine Linux

require 'chilkat'

# 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 = Chilkat::CkRest.new()
bAutoReconnect = true
success = rest.Connect("<yournamespace>.servicebus.windows.net",443,true,bAutoReconnect)
if (success != true)
    print rest.lastErrorText() + "\n";
    exit
end

# ----------------------------------------------------------------------------------------------
# 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 = Chilkat::CkStringBuilder.new()
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 = Chilkat::CkStringBuilder.new()
sbRequestBody.Append("Hello, I'm a gila monster!")

# Build the path..
sbPath = Chilkat::CkStringBuilder.new()
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 = Chilkat::CkJsonObject.new()
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 = Chilkat::CkStringBuilder.new()
success = rest.FullRequestSb("POST",sbPath.getAsString(),sbRequestBody,sbResponseBody)
if (success != true)
    print rest.lastErrorText() + "\n";
    exit
end

print "Response Status Code = " + rest.get_ResponseStatusCode().to_s() + "\n";

# Check for a success response.
if (rest.get_ResponseStatusCode() != 201)
    print rest.lastRequestStartLine() + "\n";
    print rest.lastRequestHeader() + "\n";
    print sbResponseBody.getAsString() + "\n";
    print "Failed." + "\n";
    exit
end

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

print "Success." + "\n";