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* Licensed to Elasticsearch under one or more contributor
* license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright
* ownership. Elasticsearch 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.elasticsearch.ingest.common;
import org.elasticsearch.ExceptionsHelper;
import org.elasticsearch.ingest.AbstractProcessor;
import org.elasticsearch.ingest.ConfigurationUtils;
import org.elasticsearch.ingest.IngestDocument;
import org.elasticsearch.ingest.Processor;
import org.joda.time.DateTime;
import org.joda.time.DateTimeZone;
import org.joda.time.format.ISODateTimeFormat;
import java.util.ArrayList;
import java.util.IllformedLocaleException;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.function.Function;
public final class DateProcessor extends AbstractProcessor {
public static final String TYPE = "date";
static final String DEFAULT_TARGET_FIELD = "@timestamp";
private final DateTimeZone timezone;
private final Locale locale;
private final String field;
private final String targetField;
private final List<String> formats;
private final List<Function<String, DateTime>> dateParsers;
DateProcessor(String tag, DateTimeZone timezone, Locale locale, String field, List<String> formats, String targetField) {
super(tag);
this.timezone = timezone;
this.locale = locale;
this.field = field;
this.targetField = targetField;
this.formats = formats;
this.dateParsers = new ArrayList<>(this.formats.size());
for (String format : formats) {
DateFormat dateFormat = DateFormat.fromString(format);
dateParsers.add(dateFormat.getFunction(format, timezone, locale));
}
}
@Override
public void execute(IngestDocument ingestDocument) {
String value = ingestDocument.getFieldValue(field, String.class);
DateTime dateTime = null;
Exception lastException = null;
for (Function<String, DateTime> dateParser : dateParsers) {
try {
dateTime = dateParser.apply(value);
} catch (Exception e) {
//try the next parser and keep track of the exceptions
lastException = ExceptionsHelper.useOrSuppress(lastException, e);
}
}
if (dateTime == null) {
throw new IllegalArgumentException("unable to parse date [" + value + "]", lastException);
}
ingestDocument.setFieldValue(targetField, ISODateTimeFormat.dateTime().print(dateTime));
}
@Override
public String getType() {
return TYPE;
}
DateTimeZone getTimezone() {
return timezone;
}
Locale getLocale() {
return locale;
}
String getField() {
return field;
}
String getTargetField() {
return targetField;
}
List<String> getFormats() {
return formats;
}
public static final class Factory implements Processor.Factory {
@SuppressWarnings("unchecked")
public DateProcessor create(Map<String, Processor.Factory> registry, String processorTag,
Map<String, Object> config) throws Exception {
String field = ConfigurationUtils.readStringProperty(TYPE, processorTag, config, "field");
String targetField = ConfigurationUtils.readStringProperty(TYPE, processorTag, config, "target_field", DEFAULT_TARGET_FIELD);
String timezoneString = ConfigurationUtils.readOptionalStringProperty(TYPE, processorTag, config, "timezone");
DateTimeZone timezone = timezoneString == null ? DateTimeZone.UTC : DateTimeZone.forID(timezoneString);
String localeString = ConfigurationUtils.readOptionalStringProperty(TYPE, processorTag, config, "locale");
Locale locale = Locale.ENGLISH;
if (localeString != null) {
try {
locale = (new Locale.Builder()).setLanguageTag(localeString).build();
} catch (IllformedLocaleException e) {
throw new IllegalArgumentException("Invalid language tag specified: " + localeString);
}
}
List<String> formats = ConfigurationUtils.readList(TYPE, processorTag, config, "formats");
return new DateProcessor(processorTag, timezone, locale, field, formats, targetField);
}
}
}