/*
* Copyright 2012-2017 CodeLibs Project and the Others.
*
* Licensed 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.codelibs.fess.ds.impl;
import static org.codelibs.core.stream.StreamUtil.split;
import java.net.InetAddress;
import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.Map;
import java.util.stream.Collectors;
import org.codelibs.core.lang.StringUtil;
import org.codelibs.fess.Constants;
import org.codelibs.fess.app.service.FailureUrlService;
import org.codelibs.fess.crawler.exception.CrawlingAccessException;
import org.codelibs.fess.crawler.exception.MultipleCrawlingAccessException;
import org.codelibs.fess.ds.IndexUpdateCallback;
import org.codelibs.fess.es.config.exentity.DataConfig;
import org.codelibs.fess.exception.DataStoreCrawlingException;
import org.codelibs.fess.exception.DataStoreException;
import org.codelibs.fess.util.ComponentUtil;
import org.elasticsearch.action.bulk.BulkRequestBuilder;
import org.elasticsearch.action.bulk.BulkResponse;
import org.elasticsearch.action.search.SearchRequestBuilder;
import org.elasticsearch.action.search.SearchResponse;
import org.elasticsearch.client.Client;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.transport.InetSocketTransportAddress;
import org.elasticsearch.index.query.QueryBuilders;
import org.elasticsearch.search.SearchHit;
import org.elasticsearch.search.SearchHits;
import org.elasticsearch.transport.client.PreBuiltTransportClient;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class EsDataStoreImpl extends AbstractDataStoreImpl {
private static final String PREFERENCE = "preference";
private static final String QUERY = "query";
private static final String FIELDS = "fields";
private static final String SIZE = "size";
private static final String TYPE = "type";
private static final String TIMEOUT = "timeout";
private static final String SCROLL = "scroll";
private static final String INDEX = "index";
private static final String HOSTS = "hosts";
private static final String SETTINGS_PREFIX = "settings.";
private static final Logger logger = LoggerFactory.getLogger(EsDataStoreImpl.class);
@Override
protected void storeData(final DataConfig dataConfig, final IndexUpdateCallback callback, final Map<String, String> paramMap,
final Map<String, String> scriptMap, final Map<String, Object> defaultDataMap) {
final String hostsStr = paramMap.get(HOSTS);
if (StringUtil.isBlank(hostsStr)) {
logger.info("hosts is empty.");
return;
}
final long readInterval = getReadInterval(paramMap);
final Settings settings =
Settings.builder()
.put(paramMap
.entrySet()
.stream()
.filter(e -> e.getKey().startsWith(SETTINGS_PREFIX))
.collect(
Collectors.toMap(e -> e.getKey().replaceFirst("^settings\\.", StringUtil.EMPTY), e -> e.getValue())))
.build();
logger.info("Connecting to " + hostsStr + " with [" + settings.toDelimitedString(',') + "]");
final InetSocketTransportAddress[] addresses = split(hostsStr, ",").get(stream -> stream.map(h -> {
final String[] values = h.trim().split(":");
try {
if (values.length == 1) {
return new InetSocketTransportAddress(InetAddress.getByName(values[0]), 9300);
} else if (values.length == 2) {
return new InetSocketTransportAddress(InetAddress.getByName(values[0]), Integer.parseInt(values[1]));
}
} catch (final Exception e) {
logger.warn("Failed to parse address: " + h, e);
}
return null;
}).filter(v -> v != null).toArray(n -> new InetSocketTransportAddress[n]));
try (PreBuiltTransportClient client = new PreBuiltTransportClient(settings)) {
client.addTransportAddresses(addresses);
processData(dataConfig, callback, paramMap, scriptMap, defaultDataMap, readInterval, client);
}
}
protected void processData(final DataConfig dataConfig, final IndexUpdateCallback callback, final Map<String, String> paramMap,
final Map<String, String> scriptMap, final Map<String, Object> defaultDataMap, final long readInterval, final Client client) {
final boolean deleteProcessedDoc = paramMap.getOrDefault("delete.processed.doc", Constants.FALSE).equalsIgnoreCase(Constants.TRUE);
final String[] indices;
if (paramMap.containsKey(INDEX)) {
indices = paramMap.get(INDEX).trim().split(",");
} else {
indices = new String[] { "_all" };
}
final String scroll = paramMap.containsKey(SCROLL) ? paramMap.get(SCROLL).trim() : "1m";
final String timeout = paramMap.containsKey(TIMEOUT) ? paramMap.get(TIMEOUT).trim() : "1m";
final SearchRequestBuilder builder = client.prepareSearch(indices);
if (paramMap.containsKey(TYPE)) {
builder.setTypes(paramMap.get(TYPE).trim().split(","));
}
if (paramMap.containsKey(SIZE)) {
builder.setSize(Integer.parseInt(paramMap.get(SIZE)));
}
if (paramMap.containsKey(FIELDS)) {
builder.setFetchSource(paramMap.get(FIELDS).trim().split(","), null);
}
builder.setQuery(QueryBuilders.wrapperQuery(paramMap.containsKey(QUERY) ? paramMap.get(QUERY).trim() : "{\"match_all\":{}}"));
builder.setScroll(scroll);
builder.setPreference(paramMap.containsKey(PREFERENCE) ? paramMap.get(PREFERENCE).trim() : Constants.SEARCH_PREFERENCE_PRIMARY);
try {
SearchResponse response = builder.execute().actionGet(timeout);
String scrollId = response.getScrollId();
while (scrollId != null) {
final SearchHits searchHits = response.getHits();
final SearchHit[] hits = searchHits.getHits();
if (hits.length == 0) {
scrollId = null;
break;
}
boolean loop = true;
final BulkRequestBuilder bulkRequest = deleteProcessedDoc ? client.prepareBulk() : null;
for (final SearchHit hit : hits) {
if (!alive || !loop) {
break;
}
final Map<String, Object> dataMap = new HashMap<>();
dataMap.putAll(defaultDataMap);
final Map<String, Object> resultMap = new LinkedHashMap<>();
resultMap.putAll(paramMap);
resultMap.put("index", hit.getIndex());
resultMap.put("type", hit.getType());
resultMap.put("id", hit.getId());
resultMap.put("version", Long.valueOf(hit.getVersion()));
resultMap.put("hit", hit);
resultMap.put("source", hit.getSource());
resultMap.put("crawlingConfig", dataConfig);
if (logger.isDebugEnabled()) {
for (final Map.Entry<String, Object> entry : resultMap.entrySet()) {
logger.debug(entry.getKey() + "=" + entry.getValue());
}
}
final Map<String, Object> crawlingContext = new HashMap<>();
crawlingContext.put("doc", dataMap);
resultMap.put("crawlingContext", crawlingContext);
for (final Map.Entry<String, String> entry : scriptMap.entrySet()) {
final Object convertValue = convertValue(entry.getValue(), resultMap);
if (convertValue != null) {
dataMap.put(entry.getKey(), convertValue);
}
}
if (logger.isDebugEnabled()) {
for (final Map.Entry<String, Object> entry : dataMap.entrySet()) {
logger.debug(entry.getKey() + "=" + entry.getValue());
}
}
try {
callback.store(paramMap, dataMap);
} catch (final CrawlingAccessException e) {
logger.warn("Crawling Access Exception at : " + dataMap, e);
Throwable target = e;
if (target instanceof MultipleCrawlingAccessException) {
final Throwable[] causes = ((MultipleCrawlingAccessException) target).getCauses();
if (causes.length > 0) {
target = causes[causes.length - 1];
}
}
String errorName;
final Throwable cause = target.getCause();
if (cause != null) {
errorName = cause.getClass().getCanonicalName();
} else {
errorName = target.getClass().getCanonicalName();
}
String url;
if (target instanceof DataStoreCrawlingException) {
final DataStoreCrawlingException dce = (DataStoreCrawlingException) target;
url = dce.getUrl();
if (dce.aborted()) {
loop = false;
}
} else {
url = hit.getIndex() + "/" + hit.getType() + "/" + hit.getId();
}
final FailureUrlService failureUrlService = ComponentUtil.getComponent(FailureUrlService.class);
failureUrlService.store(dataConfig, errorName, url, target);
} catch (final Throwable t) {
logger.warn("Crawling Access Exception at : " + dataMap, t);
final String url = hit.getIndex() + "/" + hit.getType() + "/" + hit.getId();
final FailureUrlService failureUrlService = ComponentUtil.getComponent(FailureUrlService.class);
failureUrlService.store(dataConfig, t.getClass().getCanonicalName(), url, t);
}
if (bulkRequest != null) {
bulkRequest.add(client.prepareDelete(hit.getIndex(), hit.getType(), hit.getId()));
}
if (readInterval > 0) {
sleep(readInterval);
}
}
if (bulkRequest != null && bulkRequest.numberOfActions() > 0) {
final BulkResponse bulkResponse = bulkRequest.execute().actionGet(timeout);
if (bulkResponse.hasFailures()) {
logger.warn(bulkResponse.buildFailureMessage());
}
}
if (!alive) {
break;
}
response = client.prepareSearchScroll(scrollId).setScroll(scroll).execute().actionGet(timeout);
scrollId = response.getScrollId();
}
} catch (final Exception e) {
throw new DataStoreException("Failed to crawl data when acessing elasticsearch.", e);
}
}
}