🎉 Postgres source: retrieve only the tables in the publication under cdc mode #14447
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,98 @@ | ||
| /* | ||
| * Copyright (c) 2022 Airbyte, Inc., all rights reserved. | ||
| */ | ||
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| package io.airbyte.integrations.source.postgres; | ||
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| import com.fasterxml.jackson.databind.JsonNode; | ||
| import com.fasterxml.jackson.databind.node.ObjectNode; | ||
| import com.google.common.collect.ImmutableMap; | ||
| import io.airbyte.commons.json.Jsons; | ||
| import io.airbyte.db.jdbc.JdbcDatabase; | ||
| import io.airbyte.integrations.base.AirbyteStreamNameNamespacePair; | ||
| import io.airbyte.integrations.debezium.internals.DebeziumEventUtils; | ||
| import io.airbyte.protocol.models.AirbyteStream; | ||
| import io.airbyte.protocol.models.SyncMode; | ||
| import java.sql.SQLException; | ||
| import java.util.ArrayList; | ||
| import java.util.Collections; | ||
| import java.util.List; | ||
| import java.util.Set; | ||
| import java.util.stream.Collectors; | ||
| import org.slf4j.Logger; | ||
| import org.slf4j.LoggerFactory; | ||
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| public final class PostgresCdcCatalogHelper { | ||
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| private static final Logger LOGGER = LoggerFactory.getLogger(PostgresCdcCatalogHelper.class); | ||
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| private PostgresCdcCatalogHelper() {} | ||
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| /* | ||
| * It isn't possible to recreate the state of the original database unless we include extra | ||
| * information (like an oid) when using logical replication. By limiting to Full Refresh when we | ||
| * don't have a primary key we dodge the problem for now. As a work around a CDC and non-CDC source | ||
| * could be configured if there's a need to replicate a large non-PK table. | ||
| * | ||
| * Note: in place mutation. | ||
| */ | ||
| public static AirbyteStream removeIncrementalWithoutPk(final AirbyteStream stream) { | ||
| if (stream.getSourceDefinedPrimaryKey().isEmpty()) { | ||
| final List<SyncMode> syncModes = new ArrayList<>(stream.getSupportedSyncModes()); | ||
| syncModes.remove(SyncMode.INCREMENTAL); | ||
| stream.setSupportedSyncModes(syncModes); | ||
| } | ||
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| return stream; | ||
| } | ||
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| /* | ||
| * Set all streams that do have incremental to sourceDefined, so that the user cannot set or | ||
| * override a cursor field. | ||
| * | ||
| * Note: in place mutation. | ||
| */ | ||
| public static AirbyteStream setIncrementalToSourceDefined(final AirbyteStream stream) { | ||
| if (stream.getSupportedSyncModes().contains(SyncMode.INCREMENTAL)) { | ||
| stream.setSourceDefinedCursor(true); | ||
| } | ||
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|
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| return stream; | ||
| } | ||
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| // Note: in place mutation. | ||
| public static AirbyteStream addCdcMetadataColumns(final AirbyteStream stream) { | ||
| final ObjectNode jsonSchema = (ObjectNode) stream.getJsonSchema(); | ||
| final ObjectNode properties = (ObjectNode) jsonSchema.get("properties"); | ||
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| final JsonNode stringType = Jsons.jsonNode(ImmutableMap.of("type", "string")); | ||
| final JsonNode numberType = Jsons.jsonNode(ImmutableMap.of("type", "number")); | ||
| properties.set(DebeziumEventUtils.CDC_LSN, numberType); | ||
| properties.set(DebeziumEventUtils.CDC_UPDATED_AT, stringType); | ||
| properties.set(DebeziumEventUtils.CDC_DELETED_AT, stringType); | ||
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| return stream; | ||
| } | ||
|
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| /** | ||
| * @return tables included in the publication. When it is not CDC mode, returns an empty set. | ||
| */ | ||
| public static Set<AirbyteStreamNameNamespacePair> getPublicizedTables(final JdbcDatabase database) throws SQLException { | ||
| final JsonNode sourceConfig = database.getSourceConfig(); | ||
| if (sourceConfig == null || !PostgresUtils.isCdc(sourceConfig)) { | ||
| return Collections.emptySet(); | ||
| } | ||
|
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| final String publication = sourceConfig.get("replication_method").get("publication").asText(); | ||
| final List<JsonNode> tablesInPublication = database.queryJsons( | ||
| "SELECT schemaname, tablename FROM pg_publication_tables WHERE pubname = ?", publication); | ||
| final Set<AirbyteStreamNameNamespacePair> publicizedTables = tablesInPublication.stream() | ||
| .map(table -> new AirbyteStreamNameNamespacePair(table.get("tablename").asText(), table.get("schemaname").asText())) | ||
| .collect(Collectors.toSet()); | ||
| LOGGER.info("For CDC, only tables in publication {} will be included in the sync: {}", publication, | ||
| publicizedTables.stream().map(pair -> pair.getNamespace() + "." + pair.getName()).toList()); | ||
|
|
||
| return publicizedTables; | ||
| } | ||
|
|
||
| } |
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This method is moved to
PostgresUtils.