snifter 0.0.15

Listen to and inspect AWS SNS topic data

snifter

Listen to and inspect AWS SNS topic data!

Because SNS data is ephemeral, we need to make a place to receive and store the data if we want to inspect it. While you can subscribe your email address, it’s not very handy to do so (SMS is obviously not better). A clean (if slightly over-complex) method for doing this is to create a temporary SQS queue, then subscribe the queue to the SNS topic you want to inspect, and then watch that queue.

Snifter does all that in a single command. The queue is build and torn down for you, and it will endlessly listen to that queue, including dropping into an interactive debug session that will let you inspect the payload in detail.

Provide a profile and a topic, the queue will be torn down when it catches Ctrl+c

Basic Usage

$ snifter --profile=dev-power --topic=tim-manager-events
Listening...
Listening...
^CListening...
Deleted queue with URL https://us-west-2.queue.amazonaws.com/024726604032/sns-listener_tim-manager-events_88fc71e98a.

Help

$ snifter --help
usage: snifter [-h] [-p PROFILE] [-d] [-t TOPIC]

Listen to an SNS topic

optional arguments:
  -h, --help            show this help message and exit
  -p PROFILE, --profile PROFILE
                        AWS profile name
  -d, --debug           Drop into debugger to inspect message
  -t TOPIC, --topic TOPIC
                        SNS topic name

Login

Listening

Inspecting (with debug on)

$ snifter -d
Profile was not passed, choose a profile: dev-power
Choose topic: tim-manager-events
Listening...
Listening...
Listening...
Listening...
Listening...
Listening...
Listening...
Listening...
Dropping into debugger for inspection
Local message variable is 'm'
PDB commands: 'c' to continue, 'exit()' to exit
(Pdb++)
(Pdb++) list
143                         print("PDB commands: 'c' to continue, 'exit()' to exit")
144                         breakpoint()
145                     else:
146                         print(f"Recieved message, {m.body}")
147
148  ->                 m.delete()
149
150                 print("Listening...")
151                 sleep(1)
152
153
(Pdb++) print(m.body)