Allow only specific actors defined as a sticky leader to become a leader #186

ydash · 2022-11-07T10:43:40Z

Allow only specific actors defined as a sticky leader to become a leader when RaftSettings.stickyLeaders is not empty.

add API of withStickyLeaders
add following features to Follower.scala and Candidate.scala
- if stickyLeaders is not empty, only raft actors defined as a sticky leader can become Leader
- if stickyLeaders is empty, all raft actors can become Leader
add following feature to RaftActor.scala
- notice warn log when creation of raft actor if stickyLeaders is not empty

src/main/scala/lerna/akka/entityreplication/ClusterReplicationSettings.scala

src/main/scala/lerna/akka/entityreplication/raft/Follower.scala

src/main/scala/lerna/akka/entityreplication/ClusterReplicationSettings.scala

src/main/scala/lerna/akka/entityreplication/raft/RaftActor.scala

src/test/scala/lerna/akka/entityreplication/raft/RaftActorCandidateSpec.scala

…f another raft actor defined as sticky leader

…ticky leader should sends RequestVote on ElectionTimeout

docs/implementation_guide.md

negokaz

Awesome! LGTM 👍

nyamada-tis added 10 commits November 7, 2022 17:18

feat: add setting of sticky leader

a15e43a

test: add setting of sticky leader

5e9491a

feat: allow only raft actors defined as sticky leader become leader

4e118a9

test: allow only raft actors defined as sticky leader become leader

45d7355

refactor: add private[this] modifier to receiveElectionTimeout function

55d8ea8

refactor: retrieve method of receiveElectionTimeout in Candidate.scala

8287609

feat: allow only raft actors defined as sticky leader become leader

720ebcf

test: allow only raft actors defined as sticky leader become leader

1e467e9

feat: notice warn log if sticky-leaders is configured

f20d7c1

test: notice warn log if sticky-leaders is configured

e641326

ydash marked this pull request as ready for review November 7, 2022 10:43

nyamada-tis and others added 7 commits November 7, 2022 19:46

docs: update CHANGELOG.md

2230615

Merge branch 'master' into allow-only-specific-actors-to-become-leader

6adaba7

refactor: set sticky leaders by API instead of configuration file

84ff33b

chore: formatting

658e561

test: optimize imports

5d7da8b

Merge branch 'master' into allow-only-specific-actors-to-become-leader

687752c

chore: add MiMa filter for ClusterReplicationSettings.withStickyLeaders

870c9c5