I have created a new analysis plugin with mvn, but installation bin/elasticsearch-plugin install failed.
Env
- CentOS 7
- elasticsearch 7.2.0
- java 1.8
Files
pom.xmlsrc/main/assemblies/plugin.xmlsrc/main/resources/plugin-descriptor.propertiessrc/main/java/hoge/AnalysisHogePlugin.javasrc/main/java/hoge/HogeTokenizerFactory.javasrc/main/java/hoge/HogeTokenizer.java
Contents of the plugin
For a minimal example, I created an analysis plugin that does nothing:
-
AnalysisHogePlugin:
package hoge;
import org.apache.lucene.analysis.Analyzer;
import org.elasticsearch.index.analysis.TokenizerFactory;
import org.elasticsearch.indices.analysis.AnalysisModule.AnalysisProvider;
import org.elasticsearch.plugins.AnalysisPlugin;
import org.elasticsearch.plugins.Plugin;
import java.util.Map;
import static java.util.Collections.singletonMap;
import hoge.HogeTokenizerFactory;
public class AnalysisHogePlugin extends Plugin implements AnalysisPlugin {
@Override
public Map<String, AnalysisProvider<TokenizerFactory>> getTokenizers() {
return singletonMap("hoge_tokenizer", HogeTokenizerFactory::new);
}
}
-
HogeTokenizer:
package hoge;
import java.io.IOException;
import java.io.StringReader;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.Comparator;
import java.util.EnumMap;
import java.util.HashMap;
import java.util.List;
import org.apache.lucene.analysis.Tokenizer;
import org.apache.lucene.analysis.tokenattributes.CharTermAttribute;
import org.apache.lucene.analysis.tokenattributes.OffsetAttribute;
import org.apache.lucene.analysis.tokenattributes.PositionIncrementAttribute;
import org.apache.lucene.analysis.tokenattributes.PositionLengthAttribute;
import org.apache.lucene.analysis.util.RollingCharBuffer;
import org.apache.lucene.util.ArrayUtil;
import org.apache.lucene.util.AttributeFactory;
public final class HogeTokenizer extends Tokenizer {
private final RollingCharBuffer buffer = new RollingCharBuffer();
private final CharTermAttribute termAtt = addAttribute(CharTermAttribute.class);
private final OffsetAttribute offsetAtt = addAttribute(OffsetAttribute.class);
private final PositionIncrementAttribute posIncAtt = addAttribute(PositionIncrementAttribute.class);
private final PositionLengthAttribute posLengthAtt = addAttribute(PositionLengthAttribute.class);
public HogeTokenizer() {
}
public HogeTokenizer(AttributeFactory factory) {
super(factory);
}
@Override
public void close() throws IOException {
super.close();
}
@Override
public void reset() throws IOException {
super.reset();
}
@Override
public void end() throws IOException {
super.end();
}
@Override
public boolean incrementToken() throws IOException {
return false;
}
}
-
HogeTokenizerFactory:
package hoge;
import org.apache.lucene.analysis.Tokenizer;
import org.elasticsearch.ElasticsearchException;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.env.Environment;
import org.elasticsearch.index.IndexSettings;
import org.elasticsearch.index.analysis.AbstractTokenizerFactory;
import hoge.HogeTokenizer;
public class HogeTokenizerFactory extends AbstractTokenizerFactory {
public HogeTokenizerFactory(IndexSettings indexSettings, Environment env, String name, Settings settings) {
super(indexSettings, settings);
}
@Override
public Tokenizer create() {
return new HogeTokenizer();
}
}
-
plugin-descriptor.properties:
description=Hoge analyzer
version=0.1.0
name=analysis-hoge
classname=hoge.AnalysisHogePlugin
java.version=1.8
elasticsearch.version=7.2.0
extended.plugins=
has.native.controller=false
Then, I ran mvn package and got a file analysis-hoge-0.1.0.zip, which contains
-
analysis-hoge-0.1.0.jar, -
plugin-descriptor.properties.
Finally, when I ran bin/elasticsearch-plugin install file:///path/to/analysis-hoge-0.1.0.zip in the root directory of Elasticsearch-7.2.0, I got an error like:
$ bin/elasticsearch-plugin install file:///home/username/develop/analysis-hoge-0.1.0.zip
-> Downloading file:///home/username/develop/analysis-hoge-0.1.0.zip
[=================================================] 100%
Exception in thread "main" java.nio.file.NoSuchFileException: /home/username/develop/elasticsearch-7.2.0/plugins/.installing-4338817505847375416/plugin-descriptor.properties
at java.base/sun.nio.fs.UnixException.translateToIOException(UnixException.java:92)
at java.base/sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:111)
at java.base/sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:116)
at java.base/sun.nio.fs.UnixFileSystemProvider.newByteChannel(UnixFileSystemProvider.java:219)
at java.base/java.nio.file.Files.newByteChannel(Files.java:373)
at java.base/java.nio.file.Files.newByteChannel(Files.java:424)
at java.base/java.nio.file.spi.FileSystemProvider.newInputStream(FileSystemProvider.java:420)
at java.base/java.nio.file.Files.newInputStream(Files.java:158)
at org.elasticsearch.plugins.PluginInfo.readFromProperties(PluginInfo.java:156)
at org.elasticsearch.plugins.InstallPluginCommand.loadPluginInfo(InstallPluginCommand.java:714)
at org.elasticsearch.plugins.InstallPluginCommand.installPlugin(InstallPluginCommand.java:793)
at org.elasticsearch.plugins.InstallPluginCommand.install(InstallPluginCommand.java:776)
at org.elasticsearch.plugins.InstallPluginCommand.execute(InstallPluginCommand.java:231)
at org.elasticsearch.plugins.InstallPluginCommand.execute(InstallPluginCommand.java:216)
at org.elasticsearch.cli.EnvironmentAwareCommand.execute(EnvironmentAwareCommand.java:86)
at org.elasticsearch.cli.Command.mainWithoutErrorHandling(Command.java:124)
at org.elasticsearch.cli.MultiCommand.execute(MultiCommand.java:77)
at org.elasticsearch.cli.Command.mainWithoutErrorHandling(Command.java:124)
at org.elasticsearch.cli.Command.main(Command.java:90)
at org.elasticsearch.plugins.PluginCli.main(PluginCli.java:47)
What is wrong? I found little information about creating Elasticsearch plugins on Google search, so I have no idea how I can fix it.
Please tell me why such an error occurs and how to fix it.