| /** |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package kafka.coordinator |
| |
| import kafka.server.DelayedOperation |
| |
| /** |
| * Delayed rebalance operations that are added to the purgatory when group is preparing for rebalance |
| * |
| * Whenever a join-group request is received, check if all known group members have requested |
| * to re-join the group; if yes, complete this operation to proceed rebalance. |
| * |
| * When the operation has expired, any known members that have not requested to re-join |
| * the group are marked as failed, and complete this operation to proceed rebalance with |
| * the rest of the group. |
| */ |
| private[coordinator] class DelayedJoin(coordinator: GroupCoordinator, |
| group: GroupMetadata, |
| rebalanceTimeout: Long) |
| extends DelayedOperation(rebalanceTimeout) { |
| |
| // overridden since tryComplete already synchronizes on the group. This makes it safe to |
| // call purgatory operations while holding the group lock. |
| override def safeTryComplete(): Boolean = tryComplete() |
| |
| override def tryComplete(): Boolean = coordinator.tryCompleteJoin(group, forceComplete) |
| override def onExpiration() = coordinator.onExpireJoin() |
| override def onComplete() = coordinator.onCompleteJoin(group) |
| } |