/*
* Copyright (C) 2014 Indeed Inc.
*
* 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 com.indeed.flamdex;
import com.google.common.base.Charsets;
import com.google.common.collect.Maps;
import com.google.common.io.InputSupplier;
import com.google.common.io.Resources;
import com.indeed.util.core.io.Closeables2;
import com.indeed.flamdex.reader.MockFlamdexReader;
import org.apache.log4j.Logger;
import org.yaml.snakeyaml.Yaml;
import org.yaml.snakeyaml.introspector.BeanAccess;
import java.io.IOException;
import java.io.Reader;
import java.util.List;
import java.util.Map;
import java.util.SortedMap;
/**
* @author jsgroth
*
* see test/resources/test.yml for an example yaml flamdex
* this class does not enforce rigorous type safety since it is expected to only be used in test code
*/
public class YamlFlamdexParser {
private static final Logger LOG = Logger.getLogger(YamlFlamdexParser.class);
public static MockFlamdexReader parseFromClasspathResource(final String resource) throws IOException {
return parseFromYaml(Resources.newReaderSupplier(Resources.getResource(resource), Charsets.UTF_8));
}
public static MockFlamdexReader parseFromYaml(final InputSupplier<? extends Reader> inputSupplier) throws IOException {
final Reader reader = inputSupplier.getInput();
final YamlFlamdexReader yfr;
try {
final Yaml yaml = new Yaml();
yaml.setBeanAccess(BeanAccess.FIELD);
yfr = yaml.loadAs(reader, YamlFlamdexReader.class);
} finally {
Closeables2.closeQuietly(reader, LOG);
}
final MockFlamdexReader r = new MockFlamdexReader(yfr.intFields.keySet(), yfr.stringFields.keySet(), yfr.intFields.keySet(), yfr.numDocs);
for (final String field : yfr.intFields.keySet()) {
for (final Map.Entry<Integer, List<Integer>> e : yfr.intFields.get(field).entrySet()) {
r.addIntTerm(field, e.getKey(), e.getValue());
}
}
for (final String field : yfr.stringFields.keySet()) {
for (final Map.Entry<String, List<Integer>> e : yfr.stringFields.get(field).entrySet()) {
r.addStringTerm(field, e.getKey(), e.getValue());
}
}
return r;
}
private static class YamlFlamdexReader {
private Map<String, SortedMap<Integer, List<Integer>>> intFields = Maps.newHashMap();
private Map<String, SortedMap<String, List<Integer>>> stringFields = Maps.newHashMap();
private int numDocs = 0;
}
}