| /* |
| * 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 org.apache.druid.indexing.overlord; |
| |
| import com.fasterxml.jackson.annotation.JsonCreator; |
| import com.fasterxml.jackson.annotation.JsonProperty; |
| import com.google.common.base.Preconditions; |
| import com.google.common.collect.ImmutableSet; |
| import org.apache.druid.segment.SegmentUtils; |
| import org.apache.druid.timeline.DataSegment; |
| |
| import javax.annotation.Nullable; |
| import java.util.Objects; |
| import java.util.Set; |
| |
| /** |
| * Result of an operation that attempts to publish segments. Indicates the set of segments actually published |
| * and whether or not the transaction was a success. |
| * |
| * If "success" is false then the segments set will be empty. |
| * |
| * It's possible for the segments set to be empty even if "success" is true, since the segments set only |
| * includes segments actually published as part of the transaction. The requested segments could have been |
| * published by a different transaction (e.g. in the case of replica sets) and this one would still succeed. |
| */ |
| public class SegmentPublishResult |
| { |
| private final Set<DataSegment> segments; |
| private final boolean success; |
| @Nullable |
| private final String errorMsg; |
| |
| public static SegmentPublishResult ok(Set<DataSegment> segments) |
| { |
| return new SegmentPublishResult(segments, true, null); |
| } |
| |
| public static SegmentPublishResult fail(String errorMsg) |
| { |
| return new SegmentPublishResult(ImmutableSet.of(), false, errorMsg); |
| } |
| |
| @JsonCreator |
| private SegmentPublishResult( |
| @JsonProperty("segments") Set<DataSegment> segments, |
| @JsonProperty("success") boolean success, |
| @JsonProperty("errorMsg") @Nullable String errorMsg |
| ) |
| { |
| this.segments = Preconditions.checkNotNull(segments, "segments"); |
| this.success = success; |
| this.errorMsg = errorMsg; |
| |
| if (!success) { |
| Preconditions.checkArgument(segments.isEmpty(), "segments must be empty for unsuccessful publishes"); |
| } |
| } |
| |
| @JsonProperty |
| public Set<DataSegment> getSegments() |
| { |
| return segments; |
| } |
| |
| @JsonProperty |
| public boolean isSuccess() |
| { |
| return success; |
| } |
| |
| @JsonProperty |
| @Nullable |
| public String getErrorMsg() |
| { |
| return errorMsg; |
| } |
| |
| @Override |
| public boolean equals(Object o) |
| { |
| if (this == o) { |
| return true; |
| } |
| if (o == null || getClass() != o.getClass()) { |
| return false; |
| } |
| SegmentPublishResult that = (SegmentPublishResult) o; |
| return success == that.success && |
| Objects.equals(segments, that.segments) && |
| Objects.equals(errorMsg, that.errorMsg); |
| } |
| |
| @Override |
| public int hashCode() |
| { |
| return Objects.hash(segments, success, errorMsg); |
| } |
| |
| @Override |
| public String toString() |
| { |
| return "SegmentPublishResult{" + |
| "segments=" + SegmentUtils.commaSeparatedIdentifiers(segments) + |
| ", success=" + success + |
| ", errorMsg='" + errorMsg + '\'' + |
| '}'; |
| } |
| } |