rafted_value v0.7.3 RaftedValue.LeaderHook behaviour View Source
A behaviour module for hooks that are invoked in leader.
Note that there are cases where hooks are invoked multiple times for a single event due to leader change.
Link to this section Summary
Callbacks
Hook to be called when a command submitted by RaftedValue.command/4
is committed
Hook to be called when a new leader is elected in a consensus group
Hook to be called when a new follower is added to a consensus group
by RaftedValue.start_link/2
with :join_existing_consensus_group
specified
Hook to be called when a follower is removed from a consensus group by RaftedValue.remove_follower/2
Hook to be called when a query given by RaftedValue.query/3
is executed
Hook to be called when a new leader restores its state from snapshot & log files
Link to this section Types
Link to this section Callbacks
on_command_committed( data_before_command :: RaftedValue.Data.data(), command_arg :: RaftedValue.Data.command_arg(), command_ret :: RaftedValue.Data.command_ret(), data_after_command :: RaftedValue.Data.data() ) :: neglected()
Hook to be called when a command submitted by RaftedValue.command/4
is committed.
on_elected(RaftedValue.Data.data()) :: neglected()
Hook to be called when a new leader is elected in a consensus group.
on_follower_added(RaftedValue.Data.data(), pid()) :: neglected()
Hook to be called when a new follower is added to a consensus group
by RaftedValue.start_link/2
with :join_existing_consensus_group
specified.
on_follower_removed(RaftedValue.Data.data(), pid()) :: neglected()
Hook to be called when a follower is removed from a consensus group by RaftedValue.remove_follower/2
.
on_query_answered( data :: RaftedValue.Data.data(), query_arg :: RaftedValue.Data.query_arg(), query_ret :: RaftedValue.Data.query_ret() ) :: neglected()
Hook to be called when a query given by RaftedValue.query/3
is executed.
on_restored_from_files(RaftedValue.Data.data()) :: neglected()
Hook to be called when a new leader restores its state from snapshot & log files.