Nick-S-2018 / buddy-test

Manticore Buddy

Manticore Buddy is a Manticore Search's sidecar written in PHP which helps it with various tasks. The typical workflow is that before returning an error to the user Manticore Search asks Buddy if it can handle it for the daemon. Buddy is written in PHP which makes it easy to implement high-level functionalities that do not require extra-high performance.

SQL processing

Introduction

To control different SQL commands we use the following architecture. Each command consists of a prefix and the rest of parameters. For example, we have "backup to local(path)". backup is the command in that case and `to local(path) is the rest.

The flow

Let's start with an example and create abstract RESTORE command!

You should look CommandExecutorInterface and CommandRequestInterface first to understand base requirements

1. We implement RestoreRequest class that implements CommandRequestInterface.
2. We write code that implements fromQuery method the purpose of which is to parse the string of the rest and return the self but with parsed arguments.
3. We implement RestoreExecutor class that implements CommandExecutorInterface and the purpose of it is to process the command by using the parsed request.
4. We write code that implements run method and to the job by returning the instance of the Task.
5. We can use that instance to check the status, get the result and also get full control of async execution!
6. Done!

Debug

To debug the flow you can use bin/query script. To run it just pass the query and it will do the job and print some results. For example:

  $ bin/query "BACKUP"
  Running query: BACKUP


  Manticore config
    endpoint =  127.0.0.1:9308

  Manticore versions:
    manticore: 5.0.3 129438c1c@221013 dev
    columnar: 0.0.0
    secondary: 0.0.0
  2022-10-20 14:26:51 [Info] Starting the backup...
  Status code: Finished
  Result: Backup directory is not writable
  done