Gust.DBLocker behaviour (gust v0.1.34)

Behaviour for acquiring a DB-backed lock (e.g. Postgres advisory lock).

Implementations must return true if the lock was acquired, false otherwise.

Summary

Function to execute if the lock is acquired

lock_key()

Lock identifier (e.g. integer key, string name, tuple, etc.)

@type attempt_result_fun() :: (boolean() -> any())

Function to execute if the lock is acquired

@type lock_key() :: term()

Lock identifier (e.g. integer key, string name, tuple, etc.)

@callback try_lock(lock_key(), attempt_result_fun()) :: boolean()

@spec try_lock(lock_key(), attempt_result_fun()) :: boolean()