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[core] Introduce ExpireChangelogImpl to decouple the changelog lifecycle
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253 changes: 253 additions & 0 deletions
253
paimon-core/src/main/java/org/apache/paimon/Changelog.java
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| /* | ||
| * 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. | ||
| */ | ||
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| package org.apache.paimon; | ||
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| import org.apache.paimon.fs.FileIO; | ||
| import org.apache.paimon.fs.Path; | ||
| import org.apache.paimon.manifest.ManifestFileMeta; | ||
| import org.apache.paimon.manifest.ManifestList; | ||
| import org.apache.paimon.utils.JsonSerdeUtil; | ||
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| import org.apache.paimon.shade.jackson2.com.fasterxml.jackson.annotation.JsonCreator; | ||
| import org.apache.paimon.shade.jackson2.com.fasterxml.jackson.annotation.JsonGetter; | ||
| import org.apache.paimon.shade.jackson2.com.fasterxml.jackson.annotation.JsonProperty; | ||
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| import javax.annotation.Nullable; | ||
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| import java.io.IOException; | ||
| import java.util.Collections; | ||
| import java.util.List; | ||
| import java.util.Objects; | ||
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| /** | ||
| * The metadata of changelog. It generates from the snapshot file during expiration. So that the | ||
| * changelog of the table can outlive the snapshot's lifecycle. A table's changelog can come from | ||
| * two source: | ||
| * <li>The changelog file. Eg: from the changelog-producer = 'input' | ||
| * <li>The delta files in the APPEND commits when the changelog-producer = 'none' | ||
| */ | ||
| public class Changelog { | ||
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| private static final int CURRENT_VERSION = 1; | ||
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| private static final String FIELD_VERSION = "version"; | ||
| private static final String FIELD_ID = "id"; | ||
| private static final String FIELD_SCHEMA_ID = "schemaId"; | ||
| private static final String FIELD_DELTA_MANIFEST_LIST = "deltaManifestList"; | ||
| private static final String FIELD_CHANGELOG_MANIFEST_LIST = "changelogManifestList"; | ||
| private static final String FIELD_COMMIT_KIND = "commitKind"; | ||
| private static final String FIELD_TIME_MILLIS = "timeMillis"; | ||
| private static final String FIELD_RECORD_COUNT = "recordCount"; | ||
| private static final String FIELD_WATERMARK = "watermark"; | ||
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| @JsonProperty(FIELD_VERSION) | ||
| private final int version; | ||
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| @JsonProperty(FIELD_ID) | ||
| private final long id; | ||
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| @JsonProperty(FIELD_SCHEMA_ID) | ||
| private final long schemaId; | ||
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| @JsonProperty(FIELD_DELTA_MANIFEST_LIST) | ||
| private final String deltaManifestList; | ||
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| @JsonProperty(FIELD_CHANGELOG_MANIFEST_LIST) | ||
| @Nullable | ||
| private final String changelogManifestList; | ||
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| @JsonProperty(FIELD_TIME_MILLIS) | ||
| private final long timeMillis; | ||
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| @JsonProperty(FIELD_RECORD_COUNT) | ||
| @Nullable | ||
| private final Long recordCount; | ||
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| @JsonProperty(FIELD_WATERMARK) | ||
| @Nullable | ||
| private final Long watermark; | ||
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| @JsonProperty(FIELD_COMMIT_KIND) | ||
| private Snapshot.CommitKind commitKind; | ||
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| public Changelog( | ||
| long id, | ||
| long schemaId, | ||
| @Nullable String deltaManifestList, | ||
| @Nullable String changelogManifestList, | ||
| Snapshot.CommitKind commitKind, | ||
| long timeMillis, | ||
| Long recordCount, | ||
| @Nullable Long watermark) { | ||
| this( | ||
| CURRENT_VERSION, | ||
| id, | ||
| schemaId, | ||
| deltaManifestList, | ||
| changelogManifestList, | ||
| commitKind, | ||
| timeMillis, | ||
| recordCount, | ||
| watermark); | ||
| } | ||
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| @JsonCreator | ||
| public Changelog( | ||
| @JsonProperty(FIELD_VERSION) @Nullable Integer version, | ||
| @JsonProperty(FIELD_ID) long id, | ||
| @JsonProperty(FIELD_SCHEMA_ID) long schemaId, | ||
| @JsonProperty(FIELD_DELTA_MANIFEST_LIST) @Nullable String deltaManifestList, | ||
| @JsonProperty(FIELD_CHANGELOG_MANIFEST_LIST) @Nullable String changelogManifestList, | ||
| @JsonProperty(FIELD_COMMIT_KIND) Snapshot.CommitKind commitKind, | ||
| @JsonProperty(FIELD_TIME_MILLIS) long timeMillis, | ||
| @JsonProperty(FIELD_RECORD_COUNT) @Nullable Long recordCount, | ||
| @JsonProperty(FIELD_WATERMARK) @Nullable Long watermark) { | ||
| this.version = version; | ||
| this.id = id; | ||
| this.schemaId = schemaId; | ||
| this.deltaManifestList = deltaManifestList; | ||
| this.changelogManifestList = changelogManifestList; | ||
| this.recordCount = recordCount; | ||
| this.commitKind = commitKind; | ||
| this.timeMillis = timeMillis; | ||
| this.watermark = watermark; | ||
| } | ||
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| @JsonGetter(FIELD_VERSION) | ||
| public int version() { | ||
| return version; | ||
| } | ||
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| @JsonGetter(FIELD_ID) | ||
| public long id() { | ||
| return id; | ||
| } | ||
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| @JsonGetter(FIELD_CHANGELOG_MANIFEST_LIST) | ||
| @Nullable | ||
| public String changelogManifestList() { | ||
| return changelogManifestList; | ||
| } | ||
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| @JsonGetter(FIELD_DELTA_MANIFEST_LIST) | ||
| public String deltaManifestList() { | ||
| return deltaManifestList; | ||
| } | ||
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| @JsonGetter(FIELD_SCHEMA_ID) | ||
| public long schemaId() { | ||
| return schemaId; | ||
| } | ||
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| @JsonGetter(FIELD_COMMIT_KIND) | ||
| public Snapshot.CommitKind commitKind() { | ||
| return commitKind; | ||
| } | ||
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| @JsonGetter(FIELD_TIME_MILLIS) | ||
| public long timeMillis() { | ||
| return timeMillis; | ||
| } | ||
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| @JsonGetter(FIELD_RECORD_COUNT) | ||
| public Long recordCount() { | ||
| return recordCount; | ||
| } | ||
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| @JsonGetter(FIELD_WATERMARK) | ||
| @Nullable | ||
| public Long watermark() { | ||
| return watermark; | ||
| } | ||
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| @Override | ||
| public boolean equals(Object o) { | ||
| if (this == o) { | ||
| return true; | ||
| } | ||
| if (!(o instanceof Changelog)) { | ||
| return false; | ||
| } | ||
| Changelog changelog = (Changelog) o; | ||
| return version == changelog.version | ||
| && id == changelog.id | ||
| && schemaId == changelog.schemaId | ||
| && timeMillis == changelog.timeMillis | ||
| && Objects.equals(deltaManifestList, changelog.deltaManifestList) | ||
| && Objects.equals(changelogManifestList, changelog.changelogManifestList) | ||
| && Objects.equals(recordCount, changelog.recordCount) | ||
| && Objects.equals(watermark, changelog.watermark) | ||
| && commitKind == changelog.commitKind; | ||
| } | ||
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| @Override | ||
| public int hashCode() { | ||
| return Objects.hash( | ||
| version, | ||
| id, | ||
| schemaId, | ||
| deltaManifestList, | ||
| changelogManifestList, | ||
| timeMillis, | ||
| recordCount, | ||
| watermark, | ||
| commitKind); | ||
| } | ||
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| /** | ||
| * Return a {@link ManifestFileMeta} for each delta manifest in this changelog. | ||
| * | ||
| * @param manifestList a {@link ManifestList} instance used for reading files at snapshot. | ||
| * @return a list of ManifestFileMeta. | ||
| */ | ||
| public List<ManifestFileMeta> deltaManifests(ManifestList manifestList) { | ||
| return deltaManifestList == null | ||
| ? Collections.emptyList() | ||
| : manifestList.read(deltaManifestList); | ||
| } | ||
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| /** | ||
| * Return a {@link ManifestFileMeta} for each changelog manifest in this changelog. | ||
| * | ||
| * @param manifestList a {@link ManifestList} instance used for reading files at snapshot. | ||
| * @return a list of ManifestFileMeta. | ||
| */ | ||
| public List<ManifestFileMeta> changelogManifests(ManifestList manifestList) { | ||
| return changelogManifestList == null | ||
| ? Collections.emptyList() | ||
| : manifestList.read(changelogManifestList); | ||
| } | ||
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| public String toJson() { | ||
| return JsonSerdeUtil.toJson(this); | ||
| } | ||
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| public static Changelog fromJson(String json) { | ||
| return JsonSerdeUtil.fromJson(json, Changelog.class); | ||
| } | ||
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| public static Changelog fromPath(FileIO fileIO, Path path) { | ||
| try { | ||
| String json = fileIO.readFileUtf8(path); | ||
| return Changelog.fromJson(json); | ||
| } catch (IOException e) { | ||
| throw new RuntimeException("Fails to read changelog from path " + path, e); | ||
| } | ||
| } | ||
| } |
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