Use Python$3,$ please do NOT copy from ChatGPT, it doesn't work. I will down vote and report your answer. I can use ChatGPT too. Thank you!

app$1$: will use CURL to retrieve a JSON payload of data from the Internet, then it will use a network socket programming to send the payload securely using TLS security to the app$2.$ It will also receive the AES encrypted payload from app$4$ via a message queue using RabbitMQ. It will also save the JSON payload to a text file on the Linux system.$$ All workflow actions pass or fail will be logged into the activity via the Eve server to MongoDB NoSQL database with a timestamp.

app$2$: will receive the secure payload from app$1$ using TLS$.$ It will then hash the JSON payload using HMAC and append it to the message and use secure SFTP to send the payload to app$3.$All workflow actions pass or fail will be logged into the activity MongoDB$$NoSQL database with an identifier and timestamp.$$

app$3$: will receive the secure SFTP payload from app$2$ using SFTP and verify the hash. It will email the payload using threading to an email address. It will then transform the JSON message into a python object and use Pyro ORB to send the python object to app$4.$ It will also compress the JSON object. All workflow actions pass or fail will be logged into the activity MongoDB$$NoSQL database with a timestamp.$$

app$4$: will receive the Pyro python object and convert it back to JSON. Then it will use RabbitMQ message Queue to send the message to app$1.$ The calculated round trip time will be displayed on app$1.$ All workflow actions pass or fail will be logged into the activity MongoDB NoSQL database with a timestamp.

app$5$: using the Eve restful web service server it will receive all the log requests and put them into the MongoDB database. Apps$1-4$ can call the restful services using the urllib library. There should be method handlers for the pass and fail.