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137 changes: 137 additions & 0 deletions
137
...to-main/src/main/java/com/facebook/presto/sql/expressions/ExpressionOptimizerManager.java
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| /* | ||
| * 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.sql.expressions; | ||
|
|
||
| import com.facebook.presto.FullConnectorSession; | ||
| import com.facebook.presto.Session; | ||
| import com.facebook.presto.metadata.FunctionAndTypeManager; | ||
| import com.facebook.presto.nodeManager.PluginNodeManager; | ||
| import com.facebook.presto.spi.ConnectorSession; | ||
| import com.facebook.presto.spi.NodeManager; | ||
| import com.facebook.presto.spi.relation.ExpressionOptimizer; | ||
| import com.facebook.presto.spi.sql.planner.ExpressionOptimizerContext; | ||
| import com.facebook.presto.spi.sql.planner.ExpressionOptimizerFactory; | ||
| import com.facebook.presto.sql.relational.FunctionResolution; | ||
| import com.facebook.presto.sql.relational.RowExpressionOptimizer; | ||
| import com.google.common.collect.ImmutableList; | ||
|
|
||
| import javax.inject.Inject; | ||
|
|
||
| import java.io.File; | ||
| import java.io.IOException; | ||
| import java.io.UncheckedIOException; | ||
| import java.util.HashMap; | ||
| import java.util.List; | ||
| import java.util.Map; | ||
| import java.util.concurrent.ConcurrentHashMap; | ||
|
|
||
| import static com.facebook.presto.SystemSessionProperties.getExpressionOptimizerName; | ||
| import static com.facebook.presto.util.PropertiesUtil.loadProperties; | ||
| import static com.google.common.base.Preconditions.checkArgument; | ||
| import static com.google.common.base.Strings.isNullOrEmpty; | ||
| import static com.google.common.io.Files.getNameWithoutExtension; | ||
| import static java.util.Objects.requireNonNull; | ||
|
|
||
| public class ExpressionOptimizerManager | ||
| { | ||
| public static final String DEFAULT_EXPRESSION_OPTIMIZER_NAME = "default"; | ||
| private static final File EXPRESSION_MANAGER_CONFIGURATION_DIRECTORY = new File("etc/expression-manager/"); | ||
| private static final String EXPRESSION_MANAGER_FACTORY_NAME = "expression-manager-factory.name"; | ||
|
|
||
| private final NodeManager nodeManager; | ||
| private final FunctionAndTypeManager functionAndTypeManager; | ||
| private final FunctionResolution functionResolution; | ||
| private final File configurationDirectory; | ||
|
|
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| private final Map<String, ExpressionOptimizerFactory> expressionOptimizerFactories = new ConcurrentHashMap<>(); | ||
| private final Map<String, ExpressionOptimizer> expressionOptimizers = new ConcurrentHashMap<>(); | ||
|
|
||
| @Inject | ||
| public ExpressionOptimizerManager(PluginNodeManager nodeManager, FunctionAndTypeManager functionAndTypeManager) | ||
| { | ||
| this(nodeManager, functionAndTypeManager, EXPRESSION_MANAGER_CONFIGURATION_DIRECTORY); | ||
| } | ||
|
|
||
| public ExpressionOptimizerManager(PluginNodeManager nodeManager, FunctionAndTypeManager functionAndTypeManager, File configurationDirectory) | ||
| { | ||
| requireNonNull(nodeManager, "nodeManager is null"); | ||
| this.nodeManager = requireNonNull(nodeManager, "nodeManager is null"); | ||
| this.functionAndTypeManager = requireNonNull(functionAndTypeManager, "functionAndTypeManager is null"); | ||
| this.functionResolution = new FunctionResolution(functionAndTypeManager.getFunctionAndTypeResolver()); | ||
| this.configurationDirectory = requireNonNull(configurationDirectory, "configurationDirectory is null"); | ||
| expressionOptimizers.put(DEFAULT_EXPRESSION_OPTIMIZER_NAME, new RowExpressionOptimizer(functionAndTypeManager)); | ||
| } | ||
|
|
||
| public void loadExpressionOptimizerFactories() | ||
| { | ||
| try { | ||
| for (File file : listFiles(configurationDirectory)) { | ||
| if (file.isFile() && file.getName().endsWith(".properties")) { | ||
| loadExpressionOptimizerFactory(file); | ||
| } | ||
| } | ||
| } | ||
| catch (IOException e) { | ||
| throw new UncheckedIOException("Failed to load expression manager configuration", e); | ||
| } | ||
| } | ||
|
|
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| private void loadExpressionOptimizerFactory(File configurationFile) | ||
| throws IOException | ||
| { | ||
| String name = getNameWithoutExtension(configurationFile.getName()); | ||
| checkArgument(!isNullOrEmpty(name), "File name is empty, full path: %s", configurationFile.getAbsolutePath()); | ||
| checkArgument(!name.equals(DEFAULT_EXPRESSION_OPTIMIZER_NAME), "Cannot name an expression optimizer instance %s", DEFAULT_EXPRESSION_OPTIMIZER_NAME); | ||
|
|
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| Map<String, String> properties = new HashMap<>(loadProperties(configurationFile)); | ||
| String factoryName = properties.remove(EXPRESSION_MANAGER_FACTORY_NAME); | ||
| checkArgument(!isNullOrEmpty(factoryName), "%s does not contain %s", configurationFile, EXPRESSION_MANAGER_FACTORY_NAME); | ||
| checkArgument(expressionOptimizerFactories.containsKey(factoryName), | ||
| "ExpressionOptimizerFactory %s is not registered, registered factories: ", factoryName, expressionOptimizerFactories.keySet()); | ||
|
|
||
| ExpressionOptimizer optimizer = expressionOptimizerFactories.get(factoryName).createOptimizer( | ||
| properties, | ||
| new ExpressionOptimizerContext(nodeManager, functionAndTypeManager, functionResolution)); | ||
| expressionOptimizers.put(name, optimizer); | ||
| } | ||
|
|
||
| public void addExpressionOptimizerFactory(ExpressionOptimizerFactory expressionOptimizerFactory) | ||
| { | ||
| String name = expressionOptimizerFactory.getName(); | ||
| checkArgument( | ||
| expressionOptimizerFactories.putIfAbsent(name, expressionOptimizerFactory) == null, | ||
| "ExpressionOptimizerFactory %s is already registered", name); | ||
| } | ||
|
|
||
| public ExpressionOptimizer getExpressionOptimizer(ConnectorSession connectorSession) | ||
| { | ||
| // TODO: Remove this check once we have a more appropriate abstraction for session properties retrieved from plugins | ||
| checkArgument(connectorSession instanceof FullConnectorSession, "connectorSession is not an instance of FullConnectorSession"); | ||
| Session session = ((FullConnectorSession) connectorSession).getSession(); | ||
| String expressionOptimizerName = getExpressionOptimizerName(session); | ||
| checkArgument(expressionOptimizers.containsKey(expressionOptimizerName), "ExpressionOptimizer '%s' is not registered", expressionOptimizerName); | ||
| return expressionOptimizers.get(expressionOptimizerName); | ||
| } | ||
|
|
||
| private static List<File> listFiles(File directory) | ||
| { | ||
| if (directory.isDirectory()) { | ||
| File[] files = directory.listFiles(); | ||
| if (files != null) { | ||
| return ImmutableList.copyOf(files); | ||
| } | ||
| } | ||
| return ImmutableList.of(); | ||
| } | ||
| } |
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