mshahid6 commented on code in PR #19107: URL: https://github.com/apache/druid/pull/19107#discussion_r3054189925
########## extensions-contrib/openlineage-emitter/src/main/java/org/apache/druid/extensions/openlineage/OpenLineageRequestLogger.java: ########## @@ -0,0 +1,498 @@ +/* + * 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.extensions.openlineage; + +import com.fasterxml.jackson.databind.ObjectMapper; +import com.fasterxml.jackson.databind.node.ArrayNode; +import com.fasterxml.jackson.databind.node.ObjectNode; +import org.apache.calcite.avatica.util.Casing; +import org.apache.calcite.avatica.util.Quoting; +import org.apache.calcite.sql.SqlBasicCall; +import org.apache.calcite.sql.SqlIdentifier; +import org.apache.calcite.sql.SqlInsert; +import org.apache.calcite.sql.SqlJoin; +import org.apache.calcite.sql.SqlKind; +import org.apache.calcite.sql.SqlNode; +import org.apache.calcite.sql.SqlOrderBy; +import org.apache.calcite.sql.SqlSelect; +import org.apache.calcite.sql.SqlWith; +import org.apache.calcite.sql.SqlWithItem; +import org.apache.calcite.sql.parser.SqlParseException; +import org.apache.calcite.sql.parser.SqlParser; +import org.apache.druid.java.util.common.concurrent.Execs; +import org.apache.druid.java.util.common.lifecycle.LifecycleStart; +import org.apache.druid.java.util.common.lifecycle.LifecycleStop; +import org.apache.druid.java.util.common.logger.Logger; +import org.apache.druid.query.BaseQuery; +import org.apache.druid.server.RequestLogLine; +import org.apache.druid.server.log.RequestLogger; +import org.apache.druid.utils.CloseableUtils; +import org.apache.http.client.HttpClient; +import org.apache.http.client.methods.HttpPost; +import org.apache.http.entity.ContentType; +import org.apache.http.entity.StringEntity; +import org.apache.http.impl.client.HttpClientBuilder; +import org.apache.http.util.EntityUtils; + +import javax.annotation.Nullable; +import java.io.Closeable; +import java.io.IOException; +import java.nio.charset.StandardCharsets; +import java.util.ArrayList; +import java.util.HashSet; +import java.util.LinkedHashSet; +import java.util.List; +import java.util.Map; +import java.util.Set; +import java.util.UUID; +import java.util.concurrent.ArrayBlockingQueue; +import java.util.concurrent.ExecutorService; +import java.util.concurrent.ThreadPoolExecutor; +import java.util.concurrent.TimeUnit; + +/** + * OpenLineage RunEvents for completed Druid queries. + */ +public class OpenLineageRequestLogger implements RequestLogger +{ + private static final Logger log = new Logger(OpenLineageRequestLogger.class); + + private static final String PRODUCER = + "https://github.com/apache/druid/extensions-contrib/openlineage-emitter";; + private static final String SCHEMA_URL = + "https://openlineage.io/spec/2-0-2/OpenLineage.json";; + private static final String ENGINE_FACET_SCHEMA_URL = + "https://openlineage.io/spec/facets/1-1-1/ProcessingEngineRunFacet.json";; + private static final String ERROR_FACET_SCHEMA_URL = + "https://openlineage.io/spec/facets/1-0-0/ErrorMessageRunFacet.json";; + private static final String JOB_TYPE_FACET_SCHEMA_URL = + "https://openlineage.io/spec/facets/2-0-2/JobTypeJobFacet.json";; + private static final String SQL_FACET_SCHEMA_URL = + "https://openlineage.io/spec/facets/1-0-1/SQLJobFacet.json";; + + // Standard Calcite parser (not Druid's custom parser): sufficient for table name extraction. + // Druid-specific syntax (REPLACE, EXTERN, etc.) falls through to the SqlParseException handler. + private static final SqlParser.Config SQL_PARSER_CONFIG = SqlParser + .config() + .withCaseSensitive(true) + .withUnquotedCasing(Casing.UNCHANGED) + .withQuotedCasing(Casing.UNCHANGED) + .withQuoting(Quoting.DOUBLE_QUOTE); + + private static final int EMIT_QUEUE_CAPACITY = 1000; + private static final int EMIT_THREAD_COUNT = 1; + + /** + * Internal broker query types that are automatically issued for schema discovery and metadata + * caching. These are not user-initiated and produce noisy, low-value lineage events. + */ + private static final Set<String> INTERNAL_QUERY_TYPES = Set.of( + "segmentMetadata", + "dataSourceMetadata", + "timeBoundary" + ); + + private final ObjectMapper jsonMapper; + private final String namespace; + private final OpenLineageRequestLoggerProvider.TransportType transportType; + @Nullable + private final String transportUrl; + @Nullable + private final HttpClient httpClient; + @Nullable + private final ExecutorService emitExecutor; + + public OpenLineageRequestLogger( + ObjectMapper jsonMapper, + String namespace, + OpenLineageRequestLoggerProvider.TransportType transportType, + @Nullable String transportUrl + ) + { + this.jsonMapper = jsonMapper; + this.namespace = namespace; + this.transportType = transportType; + this.transportUrl = transportUrl; + if (transportType == OpenLineageRequestLoggerProvider.TransportType.HTTP) { + this.httpClient = HttpClientBuilder.create().build(); + // Bounded queue: if the queue is full, silently drop the event rather than blocking + // the query thread. Uses Druid's Execs for daemon thread naming conventions. + this.emitExecutor = new ThreadPoolExecutor( + EMIT_THREAD_COUNT, + EMIT_THREAD_COUNT, + 60L, + TimeUnit.SECONDS, + new ArrayBlockingQueue<>(EMIT_QUEUE_CAPACITY), + Execs.makeThreadFactory("OpenLineageEmitter-%d"), + new ThreadPoolExecutor.DiscardPolicy() + ); + } else { + this.httpClient = null; + this.emitExecutor = null; + } + } + + @LifecycleStart + @Override + public void start() throws Exception + { + if (transportType == OpenLineageRequestLoggerProvider.TransportType.HTTP && transportUrl == null) { + throw new IllegalStateException( + "druid.request.logging.transportUrl must be set when transportType=HTTP" + ); + } + if (transportType == OpenLineageRequestLoggerProvider.TransportType.HTTP) { + log.info("Started OpenLineage HTTP transport to [%s]", transportUrl); + } else { + log.info("Started OpenLineage console transport"); + } + } + + @LifecycleStop + @Override + public void stop() + { + if (emitExecutor != null) { + emitExecutor.shutdown(); + try { + if (!emitExecutor.awaitTermination(5, TimeUnit.SECONDS)) { + emitExecutor.shutdownNow(); + } + } + catch (InterruptedException e) { + emitExecutor.shutdownNow(); + Thread.currentThread().interrupt(); + } + } + if (httpClient instanceof Closeable) { + CloseableUtils.closeAndSuppressExceptions( + (Closeable) httpClient, + e -> log.warn(e, "Failed to close OpenLineage HTTP client") + ); + } + log.info("Stopped OpenLineage request logger"); + } + + @Override + public void logNativeQuery(RequestLogLine requestLogLine) throws IOException + { + if (requestLogLine.getQuery() == null) { + return; + } + + // Skip native sub-queries of a SQL execution to avoid duplicating the SQL-level event. + if (requestLogLine.getQuery().getContext().get(BaseQuery.SQL_QUERY_ID) != null) { + return; + } + + String queryType = requestLogLine.getQuery().getType(); + + if (INTERNAL_QUERY_TYPES.contains(queryType)) { + return; + } + + List<String> inputs = new ArrayList<>(new LinkedHashSet<>(requestLogLine.getQuery().getDataSource().getTableNames())); + String queryId = requestLogLine.getQuery().getId(); + if (queryId == null) { + queryId = UUID.randomUUID().toString(); + } + + emit(buildRunEvent(queryId, null, queryType, requestLogLine, inputs, null)); + } + + @Override + public void logSqlQuery(RequestLogLine requestLogLine) throws IOException + { + String sql = requestLogLine.getSql(); + List<String> inputs = new ArrayList<>(); + String output = null; + + if (sql != null) { + try { + SqlNode parsed = SqlParser.create(sql, SQL_PARSER_CONFIG).parseQuery(); + inputs = extractInputs(parsed); + output = extractOutput(parsed); + } + catch (SqlParseException e) { + // Druid-specific SQL extensions (REPLACE, EXTERN, etc.) may not parse with the standard + // Calcite parser. Emit the event without table-level lineage rather than failing. + log.debug( + "OpenLineage: could not parse SQL for lineage extraction (query will still be emitted): %s", + e.getMessage() + ); + } + } + + String queryId = extractSqlQueryId(requestLogLine); + emit(buildRunEvent(queryId, sql, "sql", requestLogLine, new ArrayList<>(new LinkedHashSet<>(inputs)), output)); + } + + private ObjectNode buildRunEvent( + String queryId, + @Nullable String sql, + String queryType, + RequestLogLine requestLogLine, + List<String> inputs, + @Nullable String output + ) + { + Map<String, Object> stats = requestLogLine.getQueryStats().getStats(); + boolean success = Boolean.TRUE.equals(stats.get("success")); + + ObjectNode event = jsonMapper.createObjectNode(); + event.put("eventType", success ? "COMPLETE" : "FAIL"); + event.put("eventTime", requestLogLine.getTimestamp().toInstant().toString()); + event.put("producer", PRODUCER); + event.put("schemaURL", SCHEMA_URL); + event.set("run", buildRun(queryId, queryType, requestLogLine, stats, success)); + event.set("job", buildJob(queryId, sql)); + event.set("inputs", buildDatasets(inputs)); + event.set("outputs", buildDatasets(output != null ? List.of(output) : List.of())); + return event; + } + + private ObjectNode buildRun( + String queryId, + String queryType, + RequestLogLine requestLogLine, + Map<String, Object> stats, + boolean success + ) + { + ObjectNode run = jsonMapper.createObjectNode(); + run.put("runId", UUID.nameUUIDFromBytes(queryId.getBytes(StandardCharsets.UTF_8)).toString()); + + ObjectNode facets = jsonMapper.createObjectNode(); + + ObjectNode engineFacet = createFacet(ENGINE_FACET_SCHEMA_URL); + engineFacet.put("name", "druid"); + engineFacet.put("version", getDruidVersion()); + facets.set("processing_engine", engineFacet); + + ObjectNode contextFacet = createFacet(null); + contextFacet.put("queryType", queryType); + contextFacet.put("remoteAddress", requestLogLine.getRemoteAddr()); + Object identity = stats.get("identity"); + if (identity != null) { + contextFacet.put("identity", identity.toString()); + } + Object nativeQueryIds = requestLogLine.getSqlQueryContext().get("nativeQueryIds"); + if (nativeQueryIds != null) { + contextFacet.put("nativeQueryIds", nativeQueryIds.toString()); + } + facets.set("druid_query_context", contextFacet); + + ObjectNode statsFacet = createFacet(null); + putLongStat(statsFacet, "durationMs", stats, "sqlQuery/time", "query/time"); + putLongStat(statsFacet, "bytes", stats, "sqlQuery/bytes", "query/bytes"); + putLongStat(statsFacet, "planningTimeMs", stats, "sqlQuery/planningTimeMs"); + Object statusCode = stats.get("statusCode"); + if (statusCode != null) { + statsFacet.put("statusCode", statusCode.toString()); + } + facets.set("druid_query_statistics", statsFacet); + + if (!success) { + Object exception = stats.get("exception"); + if (exception != null) { + ObjectNode errorFacet = createFacet(ERROR_FACET_SCHEMA_URL); + errorFacet.put("message", exception.toString()); + if ("sql".equals(queryType)) { + errorFacet.put("programmingLanguage", "SQL"); + } + facets.set("errorMessage", errorFacet); + } + } + + run.set("facets", facets); + return run; + } + + private ObjectNode buildJob(String queryId, @Nullable String sql) + { + ObjectNode job = jsonMapper.createObjectNode(); + job.put("namespace", namespace); + job.put("name", queryId); + + ObjectNode facets = jsonMapper.createObjectNode(); + + ObjectNode jobTypeFacet = createFacet(JOB_TYPE_FACET_SCHEMA_URL); + jobTypeFacet.put("processingType", "BATCH"); + jobTypeFacet.put("integration", "DRUID"); + jobTypeFacet.put("jobType", "QUERY"); + facets.set("jobType", jobTypeFacet); + + if (sql != null) { Review Comment: do you mean if we should only emit lineage if sql? -- This is an automated message from the Apache Git Service. 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