qepoc

What's this?

It is a query engine proof of concept. We want to have three different minimal implementations of a query engine configuration in order to make a good decision.

What are the requirements?

We want to mimick a request for the main upstream interface of a cable modem with the fake MAC address 00AB123456. Each of the POCs should perform the same requests to the mock-service and get the same results.

Gimme the recipe!

Ok! Beware, this is a realistic example, but the parameters are all fake and wouldn't work in the real world.

Input Parameters:

• 00AB123456
• mainUpstreamIfc

Result:

• 'L1/0/1/1'

Needed request sequence:

1. /modem/00AB123456/ip → 10.30.22.12
2. /scopes/10.30.22.12 → mbsXZY001-01-pc
3. /scopes/mbsXZY001-01-pc/cmts → mbsXZY001
4. /cmts/mbsXZY001/modem/00AB123456/cmId → 203342
5. /cmts/mbsXZY001/ip → 62.2.11.22
6. /snmp/62.2.11.22/1.3.6.2.1.2.3.4.203342 → L1/0/1/1

The outcome of the request should be the string L1/0/1/1.

Project structure

• qepoc-mock: A Mock for the requests.

  Compile:

  cd /path/to/qepoc-mock
  mvn clean package
  

  Run:

  java -jar target/qepoc-mock-1.0-SNAPSHOT.jar
  >starting up server...
  >… ready, listening at port 4321.
  >Say 'Bye.' to disconnect.
  >Say 'Shut.' to shutdown.
  

  Use:

  telnet localhost 4321
  Trying ::1...
  Connected to localhost.
  Escape character is '^]'.
  Welcome, young padavan. Send me your request!
  /modem/00AB123456/ip
  10.30.22.12
  

  or use the java client!

  String result = Client.query("/modem/00AB123456/ip");
  

  Disconnect but let the server run:

  telnet localhost 4321
  Bye.
  
  Bye.
  Connection closed by foreign host.
  

  Terminate:

  telnet localhost 4321
  Shut.
  Bye.
  Connection closed by foreign host.