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/**
* This file is part of Graylog.
*
* Graylog is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Graylog is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Graylog. If not, see .
*/
package org.graylog2.lookup.adapters;
import au.com.bytecode.opencsv.CSVReader;
import com.codahale.metrics.MetricRegistry;
import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.JsonIgnore;
import com.fasterxml.jackson.annotation.JsonProperty;
import com.fasterxml.jackson.annotation.JsonTypeName;
import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
import com.google.auto.value.AutoValue;
import com.google.common.collect.ArrayListMultimap;
import com.google.common.collect.ImmutableMap;
import com.google.common.collect.Multimap;
import com.google.common.primitives.Ints;
import com.google.inject.assistedinject.Assisted;
import org.graylog.autovalue.WithBeanGetter;
import org.graylog2.plugin.lookup.LookupCachePurge;
import org.graylog2.plugin.lookup.LookupDataAdapter;
import org.graylog2.plugin.lookup.LookupDataAdapterConfiguration;
import org.graylog2.plugin.lookup.LookupResult;
import org.graylog2.plugin.utilities.FileInfo;
import org.joda.time.Duration;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.inject.Inject;
import javax.validation.constraints.Min;
import javax.validation.constraints.NotEmpty;
import javax.validation.constraints.Size;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.nio.charset.StandardCharsets;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.Locale;
import java.util.Map;
import java.util.Optional;
import java.util.concurrent.atomic.AtomicReference;
import static com.google.common.base.Strings.isNullOrEmpty;
public class CSVFileDataAdapter extends LookupDataAdapter {
private static final Logger LOG = LoggerFactory.getLogger(CSVFileDataAdapter.class);
public static final String NAME = "csvfile";
private final Config config;
private final AtomicReference