-
Notifications
You must be signed in to change notification settings - Fork 5.4k
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
- Loading branch information
1 parent
a7a7f80
commit 2cd1b94
Showing
20 changed files
with
991 additions
and
8 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
49 changes: 49 additions & 0 deletions
49
presto-main/src/main/java/com/facebook/presto/dispatcher/QueryAndSessionProperties.java
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,49 @@ | ||
| /* | ||
| * Licensed 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 com.facebook.presto.dispatcher; | ||
|
|
||
| import com.facebook.presto.common.analyzer.PreparedQuery; | ||
|
|
||
| import java.util.Map; | ||
| import java.util.Optional; | ||
|
|
||
| public class QueryAndSessionProperties | ||
| { | ||
| private final String query; | ||
| private final Map<String, String> systemSessionProperties; | ||
| private final Optional<PreparedQuery> preparedQuery; | ||
|
|
||
| public QueryAndSessionProperties(String query, Map<String, String> systemSessionProperties, Optional<PreparedQuery> preparedQuery) | ||
| { | ||
| this.query = query; | ||
| this.systemSessionProperties = systemSessionProperties; | ||
| this.preparedQuery = preparedQuery; | ||
| } | ||
|
|
||
| public String getQuery() | ||
| { | ||
| return query; | ||
| } | ||
|
|
||
| public Map<String, String> getSystemSessionProperties() | ||
| { | ||
| return systemSessionProperties; | ||
| } | ||
|
|
||
| public Optional<PreparedQuery> getPreparedQuery() | ||
| { | ||
| return preparedQuery; | ||
| } | ||
| } |
139 changes: 139 additions & 0 deletions
139
presto-main/src/main/java/com/facebook/presto/dispatcher/QueryRewriterManager.java
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,139 @@ | ||
| /* | ||
| * Licensed 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 com.facebook.presto.dispatcher; | ||
|
|
||
| import com.facebook.airlift.log.Logger; | ||
| import com.facebook.presto.Session; | ||
| import com.facebook.presto.common.analyzer.PreparedQuery; | ||
| import com.facebook.presto.eventlistener.EventListenerManager; | ||
| import com.facebook.presto.server.SessionContext; | ||
| import com.facebook.presto.spi.QueryId; | ||
| import com.facebook.presto.spi.analyzer.AnalyzerOptions; | ||
| import com.facebook.presto.spi.analyzer.AnalyzerProvider; | ||
| import com.facebook.presto.spi.analyzer.QueryPreparerProvider; | ||
| import com.facebook.presto.spi.eventlistener.EventListener; | ||
| import com.facebook.presto.spi.rewriter.QueryRewriterInput; | ||
| import com.facebook.presto.spi.rewriter.QueryRewriterOutput; | ||
| import com.facebook.presto.spi.rewriter.QueryRewriterProvider; | ||
| import com.facebook.presto.spi.rewriter.QueryRewriterProviderFactory; | ||
| import com.google.common.collect.ImmutableList; | ||
| import com.google.inject.Inject; | ||
|
|
||
| import java.util.List; | ||
| import java.util.Map; | ||
| import java.util.Optional; | ||
| import java.util.concurrent.atomic.AtomicReference; | ||
|
|
||
| import static com.facebook.presto.SystemSessionProperties.IS_QUERY_REWRITER_PLUGIN_ENABLED; | ||
| import static com.google.common.base.Preconditions.checkState; | ||
| import static java.lang.String.format; | ||
| import static java.util.Objects.requireNonNull; | ||
|
|
||
| /** | ||
| * To provide a query rewriter plugin, i.e. a plugin that inputs a set of session properties and query and returns the | ||
| * updated session properties and rewritten query. | ||
| * 1) Provide implementation for QueryRewriterProviderFactory | ||
| * 2) Provide implementation for QueryRewriterProvider | ||
| * 3) Implement com.facebook.presto.spi.Plugin and provide implementation for Iterable<QueryRewriterProviderFactory> getQueryRewriterProviderFactory() | ||
| * 4) Finally provide implementation of QueryRewriter, which does actual query rewrite. | ||
| * For example: | ||
| * {@link presto-tests/com.facebook.presto.plugin.rewriter.UpperCasingQueryRewriterPlugin} | ||
| */ | ||
| public class QueryRewriterManager | ||
| { | ||
| private static final Logger log = Logger.get(QueryRewriterManager.class); | ||
|
|
||
| private final AtomicReference<Optional<QueryRewriterProviderFactory>> providerFactory = new AtomicReference<>(Optional.empty()); | ||
| private final AtomicReference<Optional<QueryRewriterProvider>> provider = new AtomicReference<>(Optional.empty()); | ||
| private final EventListenerManager eventListenerManager; | ||
|
|
||
| @Inject | ||
| public QueryRewriterManager(EventListenerManager eventListenerManager) | ||
| { | ||
| this.eventListenerManager = requireNonNull(eventListenerManager, "eventListenerManager is null"); | ||
| } | ||
|
|
||
| public static Boolean isQueryRewriterPluginEnabled(SessionContext sessionContext) | ||
| { | ||
| return Boolean.parseBoolean(sessionContext.getSystemProperties().getOrDefault(IS_QUERY_REWRITER_PLUGIN_ENABLED, "false")); | ||
| } | ||
|
|
||
| public void addQueryRewriterProviderFactory(QueryRewriterProviderFactory queryRewriterProviderFactory) | ||
| { | ||
| requireNonNull(queryRewriterProviderFactory, "queryRewriterProviderFactory is null"); | ||
| checkState(providerFactory.compareAndSet(Optional.empty(), Optional.of(queryRewriterProviderFactory)), | ||
| format("A query rewriter factory is already registered with name %s", queryRewriterProviderFactory.getName())); | ||
| } | ||
|
|
||
| public void loadQueryRewriterProvider() | ||
| { | ||
| List<EventListener> configuredEventListener = ImmutableList.of(); | ||
| if (eventListenerManager.getConfiguredEventListener().isPresent()) { | ||
| configuredEventListener = ImmutableList.of(eventListenerManager.getConfiguredEventListener().get()); | ||
| } | ||
| Optional<QueryRewriterProviderFactory> queryRewriterProviderFactory = providerFactory.get(); | ||
| if (queryRewriterProviderFactory.isPresent()) { | ||
| QueryRewriterProvider queryRewriterProvider = queryRewriterProviderFactory.get().create(configuredEventListener); | ||
| checkState(provider.compareAndSet(Optional.empty(), Optional.of(queryRewriterProvider)), | ||
| format("A query rewriter provider is already registered %s", queryRewriterProvider)); | ||
| } | ||
| } | ||
|
|
||
| public Optional<QueryRewriterProvider> getQueryRewriterProvider() | ||
| { | ||
| return provider.get(); | ||
| } | ||
|
|
||
| public QueryAndSessionProperties rewriteQueryAndSession( | ||
| String query, | ||
| Session session, | ||
| AnalyzerOptions analyzerOptions, | ||
| AnalyzerProvider analyzerProvider, | ||
| QueryPreparerProvider queryPreparerProvider) | ||
| { | ||
| QueryId queryId = session.getQueryId(); | ||
| QueryAndSessionProperties rewrittenQueryAndSessionProperties = new QueryAndSessionProperties(query, session.getSystemProperties(), Optional.empty()); | ||
| if (getQueryRewriterProvider().isPresent()) { | ||
| QueryRewriterInput queryRewriterInput = new QueryRewriterInput.Builder() | ||
| .setQuery(query) | ||
| .setQueryId(queryId.getId()) | ||
| .setCatalog(session.getCatalog()) | ||
| .setSchema(session.getSchema()) | ||
| .setPreparedStatements(session.getPreparedStatements()) | ||
| .setWarningCollector(session.getWarningCollector()) | ||
| .setSessionProperties(session.getSystemProperties()) | ||
| .setAnalyzerOptions(analyzerOptions) | ||
| .setAnalyzerProvider(analyzerProvider) | ||
| .setQueryPreparer(queryPreparerProvider.getQueryPreparer()) | ||
| .build(); | ||
| try { | ||
| QueryRewriterProvider provider = getQueryRewriterProvider().get(); | ||
| QueryRewriterOutput queryRewriterOutput = provider.getQueryRewriter().rewriteSQL(queryRewriterInput); | ||
| String rewrittenQuery = queryRewriterOutput.getRewrittenQuery(); | ||
| // Checking if the rewritten query is parseable. | ||
| PreparedQuery preparedQuery = queryPreparerProvider.getQueryPreparer() | ||
| .prepareQuery(analyzerOptions, rewrittenQuery, session.getPreparedStatements(), session.getWarningCollector()); | ||
| // apply updated session properties. | ||
| Map<String, String> systemPropertyOverrides = queryRewriterOutput.getSessionProperties(); | ||
| rewrittenQueryAndSessionProperties = new QueryAndSessionProperties(rewrittenQuery, systemPropertyOverrides, Optional.of(preparedQuery)); | ||
| log.info("createQueryInternal :: QueryId [%s] - Replacing with optimized query", queryId.getId()); | ||
| } | ||
| catch (Exception e) { | ||
| // TODO : Implement a better way to test if rewritten query is parseable. | ||
| log.warn(format("rewritten query for query with id %s is discarded", session.getQueryId()), e); | ||
| } | ||
| } | ||
| return rewrittenQueryAndSessionProperties; | ||
| } | ||
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Oops, something went wrong.