akapen

Tiny judge server. docker based.

Master: Develop:

Overview

akapen is judge server for competitive programming. Every judges run on secure docker container.

Install

just type 4 commands.

git clone https://github.com/kekeho/akapen
cd akapen
docker-compose build  # build akapen
sh build-worker.sh  # build worker containers

Boot

docker-compose up

then, boot all system include redis(port: 6379) and akapen.

Judge

Throw task json like ↓ into redis compile_queue list.

{
    "user": {
        "id": "abc1234"
    },
    "uuid": "e8411f06-c3db-436b-8d57-7af03c962b5f",
    "language": "python3",
    "code": "print(input())",
    "input": "abcdef",
    "assert": "abcdef\n",
    "memory": "1M",
    "time": "1000000000"
}

Judge results will appear on redis results list.

{
    "user": {
        "id": "abc1234"
    },
    "uuid": "e8411f06-c3db-436b-8d57-7af03c962b5f",
    "language": "python3",
    "code": "print(input())",
    "input": "abcdef",
    "assertion": "abcdef\n",
    "memory": "1M",
    "time": "1000000000",
    "status": "AC",
    "output": "abcdef\n",
    "stderr": "",
    "exec_time": "432427451"
}

Status

Now, just supported only AC, WA, RE, TLE, Compiled, JSE

status	detail
AC	Accepted
WA	Wrong Answer
RE	Runtime Error
TLE	Time Limit Exceeded
Compiled	Compiled
JSE	Judge server Error

Support language

Now, just supported only python3.

• python3 version: 3.7.3 dockerfile: compile | run

Details of the judge container

• CPU limit
  1 judge container can use single core, 5% of all (cpu-period=100000, cpu-quota=5000)
• Offline
• PIDs limit
  10 (anti fork-bomb)
• Time info
  exec_time gets from docker inspect (StartedAt, FinishedAt)
  In akapen, the unit of time is nanoseconds

Test

docker-compose run judge nimble test