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/*
 * Copyright Camunda Services GmbH and/or licensed to Camunda Services GmbH under
 * one or more contributor license agreements. See the NOTICE file distributed
 * with this work for additional information regarding copyright ownership.
 * Licensed under the Camunda License 1.0. You may not use this file
 * except in compliance with the Camunda License 1.0.
 */
package io.camunda.zeebe.broker.partitioning.startup.steps;

import io.camunda.zeebe.broker.partitioning.startup.PartitionStartupContext;
import io.camunda.zeebe.scheduler.future.ActorFuture;
import io.camunda.zeebe.scheduler.startup.StartupStep;

public class RaftJoinStep implements StartupStep {

  @Override
  public String getName() {
    return "Joining Raft Partition";
  }

  @Override
  public ActorFuture startup(final PartitionStartupContext context) {
    final var result = context.concurrencyControl().createFuture();

    final var partition =
        context
            .raftPartitionFactory()
            .createRaftPartition(context.partitionMetadata(), context.partitionDirectory());

    // Immediately save the partition to the context, so that it can be closed in case of an error.
    context.raftPartition(partition);

    partition
        .join(context.partitionManagementService(), context.snapshotStore())
        .whenComplete(
            (raftPartition, throwable) -> {
              if (throwable == null) {
                result.complete(context);
              } else {
                result.completeExceptionally(throwable);
              }
            });

    return result;
  }

  @Override
  public ActorFuture shutdown(final PartitionStartupContext context) {
    final var result = context.concurrencyControl().createFuture();

    final var raftPartition = context.raftPartition();
    if (raftPartition == null) {
      result.complete(context);
      return result;
    }

    raftPartition
        .close()
        .whenComplete(
            (ignored, throwable) -> {
              if (throwable == null) {
                result.complete(context.raftPartition(null));
              } else {
                result.completeExceptionally(throwable);
              }
            });

    return result;
  }
}




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