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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.geoip;
import com.maxmind.db.NoCache;
import com.maxmind.db.NodeCache;
import com.maxmind.db.Reader;
import com.maxmind.geoip2.DatabaseReader;
import com.maxmind.geoip2.model.AbstractResponse;
import org.elasticsearch.common.Booleans;
import org.elasticsearch.common.SuppressForbidden;
import org.elasticsearch.common.cache.Cache;
import org.elasticsearch.common.cache.CacheBuilder;
import org.elasticsearch.common.io.PathUtils;
import org.elasticsearch.common.settings.Setting;
import org.elasticsearch.core.internal.io.IOUtils;
import org.elasticsearch.ingest.Processor;
import org.elasticsearch.plugins.IngestPlugin;
import org.elasticsearch.plugins.Plugin;
import java.io.Closeable;
import java.io.IOException;
import java.net.InetAddress;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.PathMatcher;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Objects;
import java.util.function.Function;
import java.util.stream.Stream;
public class IngestGeoIpPlugin extends Plugin implements IngestPlugin, Closeable {
public static final Setting CACHE_SIZE =
Setting.longSetting("ingest.geoip.cache_size", 1000, 0, Setting.Property.NodeScope);
static String[] DEFAULT_DATABASE_FILENAMES = new String[]{"GeoLite2-ASN.mmdb", "GeoLite2-City.mmdb", "GeoLite2-Country.mmdb"};
private Map databaseReaders;
@Override
public List> getSettings() {
return Arrays.asList(CACHE_SIZE);
}
@Override
public Map getProcessors(Processor.Parameters parameters) {
if (databaseReaders != null) {
throw new IllegalStateException("getProcessors called twice for geoip plugin!!");
}
final Path geoIpDirectory = getGeoIpDirectory(parameters);
final Path geoIpConfigDirectory = parameters.env.configFile().resolve("ingest-geoip");
long cacheSize = CACHE_SIZE.get(parameters.env.settings());
try {
databaseReaders = loadDatabaseReaders(geoIpDirectory, geoIpConfigDirectory);
} catch (IOException e) {
throw new RuntimeException(e);
}
return Collections.singletonMap(GeoIpProcessor.TYPE, new GeoIpProcessor.Factory(databaseReaders, new GeoIpCache(cacheSize)));
}
/*
* In GeoIpProcessorNonIngestNodeTests, ingest-geoip is loaded on the classpath. This means that the plugin is never unbundled into a
* directory where the database files would live. Therefore, we have to copy these database files ourselves. To do this, we need the
* ability to specify where those database files would go. We do this by adding a plugin that registers ingest.geoip.database_path as
* an actual setting. Otherwise, in production code, this setting is not registered and the database path is not configurable.
*/
@SuppressForbidden(reason = "PathUtils#get")
private Path getGeoIpDirectory(Processor.Parameters parameters) {
final Path geoIpDirectory;
if (parameters.env.settings().get("ingest.geoip.database_path") == null) {
geoIpDirectory = parameters.env.modulesFile().resolve("ingest-geoip");
} else {
geoIpDirectory = PathUtils.get(parameters.env.settings().get("ingest.geoip.database_path"));
}
return geoIpDirectory;
}
static Map loadDatabaseReaders(Path geoIpDirectory, Path geoIpConfigDirectory) throws IOException {
assertDatabaseExistence(geoIpDirectory, true);
assertDatabaseExistence(geoIpConfigDirectory, false);
final boolean loadDatabaseOnHeap = Booleans.parseBoolean(System.getProperty("es.geoip.load_db_on_heap", "false"));
final Map databaseReaders = new HashMap<>();
// load the default databases
for (final String databaseFilename : DEFAULT_DATABASE_FILENAMES) {
final Path databasePath = geoIpDirectory.resolve(databaseFilename);
final DatabaseReaderLazyLoader loader = createLoader(databasePath, loadDatabaseOnHeap);
databaseReaders.put(databaseFilename, loader);
}
// load any custom databases
if (Files.exists(geoIpConfigDirectory)) {
try (Stream databaseFiles = Files.list(geoIpConfigDirectory)) {
PathMatcher pathMatcher = geoIpConfigDirectory.getFileSystem().getPathMatcher("glob:**.mmdb");
// Use iterator instead of forEach otherwise IOException needs to be caught twice...
Iterator iterator = databaseFiles.iterator();
while (iterator.hasNext()) {
Path databasePath = iterator.next();
if (Files.isRegularFile(databasePath) && pathMatcher.matches(databasePath)) {
String databaseFileName = databasePath.getFileName().toString();
final DatabaseReaderLazyLoader loader = createLoader(databasePath, loadDatabaseOnHeap);
databaseReaders.put(databaseFileName, loader);
}
}
}
}
return Collections.unmodifiableMap(databaseReaders);
}
private static DatabaseReaderLazyLoader createLoader(Path databasePath, boolean loadDatabaseOnHeap) {
return new DatabaseReaderLazyLoader(
databasePath,
() -> {
DatabaseReader.Builder builder = createDatabaseBuilder(databasePath).withCache(NoCache.getInstance());
if (loadDatabaseOnHeap) {
builder.fileMode(Reader.FileMode.MEMORY);
} else {
builder.fileMode(Reader.FileMode.MEMORY_MAPPED);
}
return builder.build();
});
}
private static void assertDatabaseExistence(final Path path, final boolean exists) throws IOException {
for (final String database : DEFAULT_DATABASE_FILENAMES) {
if (Files.exists(path.resolve(database)) != exists) {
final String message = "expected database [" + database + "] to " + (exists ? "" : "not ") + "exist in [" + path + "]";
throw new IOException(message);
}
}
}
@SuppressForbidden(reason = "Maxmind API requires java.io.File")
private static DatabaseReader.Builder createDatabaseBuilder(Path databasePath) {
return new DatabaseReader.Builder(databasePath.toFile());
}
@Override
public void close() throws IOException {
if (databaseReaders != null) {
IOUtils.close(databaseReaders.values());
}
}
/**
* The in-memory cache for the geoip data. There should only be 1 instance of this class..
* This cache differs from the maxmind's {@link NodeCache} such that this cache stores the deserialized Json objects to avoid the
* cost of deserialization for each lookup (cached or not). This comes at slight expense of higher memory usage, but significant
* reduction of CPU usage.
*/
static class GeoIpCache {
private final Cache, AbstractResponse> cache;
//package private for testing
GeoIpCache(long maxSize) {
if (maxSize < 0) {
throw new IllegalArgumentException("geoip max cache size must be 0 or greater");
}
this.cache = CacheBuilder., AbstractResponse>builder().setMaximumWeight(maxSize).build();
}
T putIfAbsent(InetAddress ip, Class responseType,
Function retrieveFunction) {
//can't use cache.computeIfAbsent due to the elevated permissions for the jackson (run via the cache loader)
CacheKey cacheKey = new CacheKey<>(ip, responseType);
//intentionally non-locking for simplicity...it's OK if we re-put the same key/value in the cache during a race condition.
AbstractResponse response = cache.get(cacheKey);
if (response == null) {
response = retrieveFunction.apply(ip);
cache.put(cacheKey, response);
}
return responseType.cast(response);
}
//only useful for testing
T get(InetAddress ip, Class responseType) {
CacheKey cacheKey = new CacheKey<>(ip, responseType);
return responseType.cast(cache.get(cacheKey));
}
/**
* The key to use for the cache. Since this cache can span multiple geoip processors that all use different databases, the response
* type is needed to be included in the cache key. For example, if we only used the IP address as the key the City and ASN the same
* IP may be in both with different values and we need to cache both. The response type scopes the IP to the correct database
* provides a means to safely cast the return objects.
* @param The AbstractResponse type used to scope the key and cast the result.
*/
private static class CacheKey {
private final InetAddress ip;
private final Class responseType;
private CacheKey(InetAddress ip, Class responseType) {
this.ip = ip;
this.responseType = responseType;
}
//generated
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
CacheKey cacheKey = (CacheKey) o;
return Objects.equals(ip, cacheKey.ip) &&
Objects.equals(responseType, cacheKey.responseType);
}
//generated
@Override
public int hashCode() {
return Objects.hash(ip, responseType);
}
}
}
}
