| /* |
| * 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.drill.exec.ops; |
| |
| import java.io.IOException; |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.concurrent.ExecutorService; |
| |
| import com.google.common.base.Preconditions; |
| import org.apache.drill.common.exceptions.UserException; |
| import org.apache.drill.exec.memory.BufferAllocator; |
| import org.apache.drill.exec.physical.base.PhysicalOperator; |
| import org.apache.drill.exec.store.dfs.DrillFileSystem; |
| import org.apache.drill.exec.testing.ControlsInjector; |
| import org.apache.drill.exec.testing.ExecutionControls; |
| import org.apache.hadoop.conf.Configuration; |
| |
| import io.netty.buffer.DrillBuf; |
| |
| /** |
| * Implementation of {@link OperatorContext} that provides services |
| * needed by most run-time operators. Excludes services that need the |
| * entire Drillbit. This class provides services common to the test-time |
| * version of the operator context and the full production-time context |
| * that includes network services. |
| */ |
| public abstract class BaseOperatorContext implements OperatorContext { |
| static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(BaseOperatorContext.class); |
| |
| protected final FragmentContext context; |
| protected final BufferAllocator allocator; |
| protected final PhysicalOperator popConfig; |
| protected final BufferManager manager; |
| private List<DrillFileSystem> fileSystems; |
| private ControlsInjector injector; |
| private boolean allowCreatingFileSystem = true; |
| |
| public BaseOperatorContext(FragmentContext context, BufferAllocator allocator, |
| PhysicalOperator popConfig) { |
| this.context = context; |
| this.allocator = allocator; |
| this.popConfig = popConfig; |
| this.manager = new BufferManagerImpl(allocator); |
| this.fileSystems = new ArrayList<>(); |
| } |
| |
| @Override |
| public FragmentContext getFragmentContext() { |
| return context; |
| } |
| |
| @SuppressWarnings("unchecked") |
| @Override |
| public <T extends PhysicalOperator> T getOperatorDefn() { |
| return (T) popConfig; |
| } |
| |
| public String getName() { |
| return popConfig.getClass().getName(); |
| } |
| |
| @Override |
| public DrillBuf replace(DrillBuf old, int newSize) { |
| return manager.replace(old, newSize); |
| } |
| |
| @Override |
| public DrillBuf getManagedBuffer() { |
| return manager.getManagedBuffer(); |
| } |
| |
| @Override |
| public DrillBuf getManagedBuffer(int size) { |
| return manager.getManagedBuffer(size); |
| } |
| |
| @Override |
| public ExecutionControls getExecutionControls() { |
| return context.getExecutionControls(); |
| } |
| |
| @Override |
| public BufferAllocator getAllocator() { |
| if (allocator == null) { |
| throw new UnsupportedOperationException("Operator context does not have an allocator"); |
| } |
| return allocator; |
| } |
| |
| // Allow an operator to use the thread pool |
| @Override |
| public ExecutorService getExecutor() { |
| return context.getExecutor(); |
| } |
| |
| @Override |
| public ExecutorService getScanExecutor() { |
| return context.getScanExecutor(); |
| } |
| |
| @Override |
| public ExecutorService getScanDecodeExecutor() { |
| return context.getScanDecodeExecutor(); |
| } |
| |
| @Override |
| public void setInjector(ControlsInjector injector) { |
| this.injector = injector; |
| } |
| |
| @Override |
| public ControlsInjector getInjector() { |
| return injector; |
| } |
| |
| @Override |
| public void injectUnchecked(String desc) { |
| ExecutionControls executionControls = context.getExecutionControls(); |
| if (injector != null && executionControls != null) { |
| injector.injectUnchecked(executionControls, desc); |
| } |
| } |
| |
| @Override |
| public <T extends Throwable> void injectChecked(String desc, Class<T> exceptionClass) |
| throws T { |
| ExecutionControls executionControls = context.getExecutionControls(); |
| if (injector != null && executionControls != null) { |
| injector.injectChecked(executionControls, desc, exceptionClass); |
| } |
| } |
| |
| @Override |
| public void close() { |
| RuntimeException ex = null; |
| try { |
| manager.close(); |
| } catch (RuntimeException e) { |
| ex = e; |
| } |
| try { |
| if (allocator != null) { |
| allocator.close(); |
| } |
| } catch (RuntimeException e) { |
| ex = ex == null ? e : ex; |
| } |
| |
| for (DrillFileSystem fs : fileSystems) { |
| try { |
| fs.close(); |
| } catch (IOException e) { |
| throw UserException.resourceError(e) |
| .addContext("Failed to close the Drill file system for " + getName()) |
| .build(logger); |
| } |
| } |
| |
| if (ex != null) { |
| throw ex; |
| } |
| } |
| |
| /** |
| * Creates DrillFileSystem that automatically tracks operator stats. |
| * Only one tracking and no non-tracking file system per operator context. |
| */ |
| @Override |
| public DrillFileSystem newFileSystem(Configuration conf) throws IOException { |
| Preconditions.checkState(allowCreatingFileSystem, "Only one tracking file system is allowed per Operator Context and it is already created."); |
| Preconditions.checkState(fileSystems.isEmpty(), "Non-tracking file system(-s) is(are) already created."); |
| DrillFileSystem fs = new DrillFileSystem(conf, getStats()); |
| fileSystems.add(fs); |
| allowCreatingFileSystem = false; |
| return fs; |
| } |
| |
| /** |
| * Creates a DrillFileSystem that does not automatically track operator stats. |
| * Multiple non-tracking file system are allowed. |
| */ |
| @Override |
| public DrillFileSystem newNonTrackingFileSystem(Configuration conf) throws IOException { |
| Preconditions.checkState(allowCreatingFileSystem, "Only one tracking file system is allowed per Operator Context and it is already created."); |
| DrillFileSystem fs = new DrillFileSystem(conf, null); |
| fileSystems.add(fs); |
| return fs; |
| } |
| |
| } |