Simple Lock Service

sls works as a web server which has following endpoints

• :8000/lock
• :8000/unlock
• :8000/clear

The format of Post request is:

{
  "uuid": "xxx-yyy-zzz-...",
  "path": "file path"
}

• uuid is used to identify the pair of lock and unlock.
• path is used to identify a resouce name which is locked and unlocked.
• The order in which lock requests for a specific path are processed is the order in which they arrive.

The format of Post request is:

{
  "clear_all": true
}

• If clear_all is true, all pending lock requests will be aborted and StatusGone(410) will be returned.