Github user paul-rogers commented on a diff in the pull request: https://github.com/apache/drill/pull/831#discussion_r118615907 --- Diff: exec/java-exec/src/main/java/org/apache/drill/exec/store/pcap/PcapFormatPlugin.java --- @@ -0,0 +1,115 @@ +/* + * 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.store.pcap; + +import com.google.common.collect.ImmutableList; +import com.google.common.collect.Lists; +import org.apache.drill.common.exceptions.ExecutionSetupException; +import org.apache.drill.common.expression.SchemaPath; +import org.apache.drill.common.logical.StoragePluginConfig; +import org.apache.drill.exec.ops.FragmentContext; +import org.apache.drill.exec.planner.logical.DrillTable; +import org.apache.drill.exec.server.DrillbitContext; +import org.apache.drill.exec.store.RecordReader; +import org.apache.drill.exec.store.RecordWriter; +import org.apache.drill.exec.store.dfs.BasicFormatMatcher; +import org.apache.drill.exec.store.dfs.DrillFileSystem; +import org.apache.drill.exec.store.dfs.FileSelection; +import org.apache.drill.exec.store.dfs.FileSystemPlugin; +import org.apache.drill.exec.store.dfs.FormatMatcher; +import org.apache.drill.exec.store.dfs.FormatSelection; +import org.apache.drill.exec.store.dfs.MagicString; +import org.apache.drill.exec.store.dfs.NamedFormatPluginConfig; +import org.apache.drill.exec.store.dfs.easy.EasyFormatPlugin; +import org.apache.drill.exec.store.dfs.easy.EasyWriter; +import org.apache.drill.exec.store.dfs.easy.FileWork; +import org.apache.hadoop.conf.Configuration; +import org.apache.hadoop.fs.Path; + +import java.io.IOException; +import java.util.List; +import java.util.regex.Pattern; + +public class PcapFormatPlugin extends EasyFormatPlugin<PcapFormatConfig> { + + private final PcapFormatMatcher matcher; + + public PcapFormatPlugin(String name, DrillbitContext context, Configuration fsConf, + StoragePluginConfig storagePluginConfig) { + this(name, context, fsConf, storagePluginConfig, new PcapFormatConfig()); + } + + public PcapFormatPlugin(String name, DrillbitContext context, Configuration fsConf, StoragePluginConfig config, PcapFormatConfig formatPluginConfig) { + super(name, context, fsConf, config, formatPluginConfig, true, false, true, false, Lists.newArrayList("pcap"), "pcap"); + this.matcher = new PcapFormatMatcher(this); + } + + @Override + public boolean supportsPushDown() { + return true; + } + + @Override + public RecordReader getRecordReader(FragmentContext context, DrillFileSystem dfs, FileWork fileWork, List<SchemaPath> columns, String userName) throws ExecutionSetupException { + String path = dfs.makeQualified(new Path(fileWork.getPath())).toUri().getPath(); + return new PcapRecordReader(path, columns); + } + + @Override + public RecordWriter getRecordWriter(FragmentContext context, EasyWriter writer) throws IOException { + return null; + } + + @Override + public int getReaderOperatorType() { + return 0; --- End diff -- Seems akward, but it seems that other format plugins add a type to a protobuf, then return that here: ``` return CoreOperatorType.JSON_SUB_SCAN_VALUE; ``` And `UserBitShared.proto`: ``` JSON_SUB_SCAN = 29; ``` The next available number is 37. This seems rather brittle. Seems we should have a more general solution. But, until we do, I'd guess you'll need to add the enum value. As an alternative, `SequenceFileForamtPlugin` just makes up a number: ``` public int getReaderOperatorType() { return 4001; } ```
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