drill-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From arina-ielchiieva <...@git.apache.org>
Subject [GitHub] drill pull request #574: DRILL-4726: Dynamic UDFs support
Date Sun, 11 Sep 2016 11:15:55 GMT
Github user arina-ielchiieva commented on a diff in the pull request:

    https://github.com/apache/drill/pull/574#discussion_r78292804
  
    --- Diff: exec/java-exec/src/main/java/org/apache/drill/exec/expr/fn/RemoteFunctionRegistry.java
---
    @@ -0,0 +1,185 @@
    +/**
    + * 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
    + * <p/>
    + * http://www.apache.org/licenses/LICENSE-2.0
    + * <p/>
    + * 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.expr.fn;
    +
    +import com.fasterxml.jackson.databind.ObjectMapper;
    +import org.apache.commons.io.FilenameUtils;
    +import org.apache.drill.common.config.DrillConfig;
    +import org.apache.drill.common.exceptions.DrillRuntimeException;
    +import org.apache.drill.exec.ExecConstants;
    +import org.apache.drill.exec.coord.ClusterCoordinator;
    +import org.apache.drill.exec.coord.store.TransientStore;
    +import org.apache.drill.exec.coord.store.TransientStoreConfig;
    +import org.apache.drill.exec.coord.store.TransientStoreListener;
    +import org.apache.drill.exec.exception.StoreException;
    +import org.apache.drill.exec.exception.VersionMismatchException;
    +import org.apache.drill.exec.proto.SchemaUserBitShared;
    +import org.apache.drill.exec.proto.UserBitShared.Registry;
    +import org.apache.drill.exec.store.sys.PersistentStore;
    +import org.apache.drill.exec.store.sys.PersistentStoreConfig;
    +import org.apache.drill.exec.store.sys.PersistentStoreProvider;
    +import org.apache.drill.exec.store.sys.store.DataChangeVersion;
    +import org.apache.hadoop.conf.Configuration;
    +import org.apache.hadoop.fs.FileSystem;
    +import org.apache.hadoop.fs.Path;
    +
    +import java.io.IOException;
    +
    +import static com.fasterxml.jackson.databind.SerializationFeature.INDENT_OUTPUT;
    +
    +/** Is responsible for remote function registry management.
    + *  Creates all remote registry areas at startup, during init establishes connections
with stores.
    + *  Provides tools to update remote registry and unregister functions, access remote
registry areas.
    + */
    +public class RemoteFunctionRegistry implements AutoCloseable {
    +
    +  public static final String REGISTRY = "registry";
    +
    +  private static final ObjectMapper mapper = new ObjectMapper().enable(INDENT_OUTPUT);
    +
    +  private final TransientStoreListener unregistrationListener;
    +  private int retryTimes;
    +  private FileSystem fs;
    +  private Path registryArea;
    +  private Path stagingArea;
    +  private Path tmpArea;
    +
    +  private PersistentStore<Registry> registry;
    +  private TransientStore<String> unregistration;
    +  private TransientStore<String> jars;
    +
    +  public RemoteFunctionRegistry(TransientStoreListener unregistrationListener) {
    +    this.unregistrationListener = unregistrationListener;
    +  }
    +
    +  public void init(DrillConfig config, PersistentStoreProvider storeProvider, ClusterCoordinator
coordinator) {
    +    try {
    +      PersistentStoreConfig<Registry> registrationConfig = PersistentStoreConfig
    +          .newProtoBuilder(SchemaUserBitShared.Registry.WRITE, SchemaUserBitShared.Registry.MERGE)
    +          .name("udf")
    +          .persist()
    +          .build();
    +      registry = storeProvider.getOrCreateStore(registrationConfig);
    +      registry.putIfAbsent(REGISTRY, Registry.getDefaultInstance());
    +    } catch (StoreException e) {
    +      throw new DrillRuntimeException("Failure while loading remote registry.", e);
    +    }
    +
    +    TransientStoreConfig<String> unregistrationConfig = TransientStoreConfig.
    +        newJacksonBuilder(mapper, String.class).name("udf/unregister").build();
    +    unregistration = coordinator.getOrCreateTransientStore(unregistrationConfig);
    +    unregistration.addListener(unregistrationListener);
    +
    +    TransientStoreConfig<String> jarsConfig = TransientStoreConfig.
    +        newJacksonBuilder(mapper, String.class).name("udf/jars").build();
    +    jars = coordinator.getOrCreateTransientStore(jarsConfig);
    +
    +    this.retryTimes = config.getInt(ExecConstants.UDF_RETRY_TIMES);
    +
    +    Configuration conf = new Configuration();
    +    if (config.hasPath(ExecConstants.UDF_DIRECTORY_FS)) {
    +      conf.set(FileSystem.FS_DEFAULT_NAME_KEY, config.getString(ExecConstants.UDF_DIRECTORY_FS));
    +    }
    +
    +    try {
    +      this.fs = FileSystem.get(conf);
    +      String base = config.getString(ExecConstants.UDF_DIRECTORY_BASE);
    +      this.registryArea = createArea(fs, base, config.getString(ExecConstants.UDF_DIRECTORY_REGISTRY));
    +      this.stagingArea = createArea(fs, base, config.getString(ExecConstants.UDF_DIRECTORY_STAGING));
    +      this.tmpArea = createArea(fs, base, config.getString(ExecConstants.UDF_DIRECTORY_TMP));
    +    } catch (IOException e) {
    +      throw new DrillRuntimeException("Error during areas creation for remote function
registry.", e);
    +    }
    +  }
    +
    +  public Registry getRegistry() {
    +    return registry.get(REGISTRY);
    +  }
    +
    +  public Registry getRegistry(DataChangeVersion version) {
    +    return registry.get(REGISTRY, version);
    +  }
    +
    +  public void updateRegistry(Registry registryContent, DataChangeVersion version) throws
VersionMismatchException {
    +    registry.put(REGISTRY, registryContent, version);
    +  }
    +
    +  public void submitForUnregistration(String jar) {
    +    putIfAbsent(unregistration, jar, jar);
    +  }
    +
    +  public void finishUnregistration(String jar) {
    +    remove(unregistration, jar);
    +  }
    +
    +  public String addToJars(String jar, Action action) {
    +    return putIfAbsent(jars, jar, action.toString());
    +  }
    +
    +  public void removeFromJars(String jar) {
    +    remove(jars, jar);
    +  }
    +
    +  public int getRetryTimes() {
    --- End diff --
    
    Yes. It's needed for CreateFunctionHandler and DropFunctionHandler.


---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at infrastructure@apache.org or file a JIRA ticket
with INFRA.
---

Mime
View raw message