/*
* Licensed to CRATE Technology GmbH ("Crate") under one or more contributor
* license agreements. See the NOTICE file distributed with this work for
* additional information regarding copyright ownership. Crate 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.
*
* However, if you have executed another commercial license agreement
* with Crate these terms will supersede the license and you may use the
* software solely pursuant to the terms of the relevant commercial agreement.
*/
package io.crate.metadata;
import com.google.common.base.Function;
import com.google.common.collect.Iterators;
import io.crate.operation.udf.UserDefinedFunctionsMetaData;
import org.apache.logging.log4j.Logger;
import org.elasticsearch.cluster.metadata.MetaData;
import org.elasticsearch.cluster.service.ClusterService;
import org.elasticsearch.common.logging.Loggers;
import org.elasticsearch.common.settings.Settings;
import javax.annotation.Nullable;
import java.io.IOException;
import java.util.Iterator;
import java.util.Locale;
import java.util.Map;
import static io.crate.metadata.FulltextAnalyzerResolver.CustomType;
import static java.util.Collections.emptyIterator;
public class RoutineInfos implements Iterable<RoutineInfo> {
private static final Logger logger = Loggers.getLogger(RoutineInfos.class);
private FulltextAnalyzerResolver ftResolver;
private final ClusterService clusterService;
private enum RoutineType {
ANALYZER(CustomType.ANALYZER.getName().toUpperCase(Locale.ENGLISH)),
CHAR_FILTER(CustomType.CHAR_FILTER.getName().toUpperCase(Locale.ENGLISH)),
TOKEN_FILTER("TOKEN_FILTER"),
FUNCTION("FUNCTION"),
TOKENIZER(CustomType.TOKENIZER.getName().toUpperCase(Locale.ENGLISH)),;
private String name;
RoutineType(String name) {
this.name = name;
}
public String getName() {
return name;
}
}
public RoutineInfos(FulltextAnalyzerResolver ftResolver, ClusterService clusterService) {
this.ftResolver = ftResolver;
this.clusterService = clusterService;
}
private Iterator<RoutineInfo> builtInAnalyzers() {
return Iterators.transform(
ftResolver.getBuiltInAnalyzers().iterator(),
new Function<String, RoutineInfo>() {
@Nullable
@Override
public RoutineInfo apply(@Nullable String input) {
return new RoutineInfo(input,
RoutineType.ANALYZER.getName());
}
});
}
private Iterator<RoutineInfo> builtInCharFilters() {
return Iterators.transform(
ftResolver.getBuiltInCharFilters().iterator(),
new Function<String, RoutineInfo>() {
@Nullable
@Override
public RoutineInfo apply(@Nullable String input) {
return new RoutineInfo(input,
RoutineType.CHAR_FILTER.getName());
}
});
}
private Iterator<RoutineInfo> builtInTokenFilters() {
return Iterators.transform(
ftResolver.getBuiltInTokenFilters().iterator(),
new Function<String, RoutineInfo>() {
@Nullable
@Override
public RoutineInfo apply(@Nullable String input) {
return new RoutineInfo(input,
RoutineType.TOKEN_FILTER.getName());
}
});
}
private Iterator<RoutineInfo> builtInTokenizers() {
return Iterators.transform(
ftResolver.getBuiltInTokenizers().iterator(),
new Function<String, RoutineInfo>() {
@Nullable
@Override
public RoutineInfo apply(@Nullable String input) {
return new RoutineInfo(input,
RoutineType.TOKENIZER.getName());
}
});
}
private Iterator<RoutineInfo> userDefinedFunctions() {
MetaData metaData = clusterService.state().getMetaData();
UserDefinedFunctionsMetaData functionsMetaData = metaData.custom(UserDefinedFunctionsMetaData.TYPE);
if (functionsMetaData == null) {
return emptyIterator();
}
return Iterators.transform(functionsMetaData.functionsMetaData().iterator(),
input -> new RoutineInfo(
input.name(),
RoutineType.FUNCTION.getName(),
input.schema(),
input.specificName(),
input.definition(),
input.language(),
input.returnType().getName(),
true)
);
}
private Iterator<RoutineInfo> customIterators() {
try {
Iterator<RoutineInfo> cAnalyzersIterator;
Iterator<RoutineInfo> cCharFiltersIterator;
Iterator<RoutineInfo> cTokenFiltersIterator;
Iterator<RoutineInfo> cTokenizersIterator;
cAnalyzersIterator = Iterators.transform(
ftResolver.getCustomAnalyzers().entrySet().iterator(),
new Function<Map.Entry<String, Settings>, RoutineInfo>() {
@Nullable
@Override
public RoutineInfo apply(Map.Entry<String, Settings> input) {
assert input != null : "input must not be null";
return new RoutineInfo(input.getKey(),
RoutineType.ANALYZER.getName()
);
}
});
cCharFiltersIterator = Iterators.transform(
ftResolver.getCustomCharFilters().entrySet().iterator(),
new Function<Map.Entry<String, Settings>, RoutineInfo>() {
@Nullable
@Override
public RoutineInfo apply(Map.Entry<String, Settings> input) {
assert input != null : "input must not be null";
return new RoutineInfo(input.getKey(),
RoutineType.CHAR_FILTER.getName()
);
}
});
cTokenFiltersIterator = Iterators.transform(
ftResolver.getCustomTokenFilters().entrySet().iterator(),
new Function<Map.Entry<String, Settings>, RoutineInfo>() {
@Nullable
@Override
public RoutineInfo apply(Map.Entry<String, Settings> input) {
assert input != null : "input must not be null";
return new RoutineInfo(input.getKey(),
RoutineType.TOKEN_FILTER.getName()
);
}
});
cTokenizersIterator = Iterators.transform(
ftResolver.getCustomTokenizers().entrySet().iterator(),
new Function<Map.Entry<String, Settings>, RoutineInfo>() {
@Nullable
@Override
public RoutineInfo apply(Map.Entry<String, Settings> input) {
assert input != null : "input must not be null";
return new RoutineInfo(input.getKey(),
RoutineType.TOKENIZER.getName()
);
}
});
return Iterators.concat(cAnalyzersIterator, cCharFiltersIterator,
cTokenFiltersIterator, cTokenizersIterator);
} catch (IOException e) {
logger.error("Could not retrieve custom routines", e);
return null;
}
}
@Override
public Iterator<RoutineInfo> iterator() {
return Iterators.concat(
builtInAnalyzers(),
builtInCharFilters(),
builtInTokenFilters(),
builtInTokenizers(),
customIterators(),
userDefinedFunctions()
);
}
}