hadoop TimelineParserForKVFilters 源码
haddop TimelineParserForKVFilters 代码
文件路径：/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice/src/main/java/org/apache/hadoop/yarn/server/timelineservice/reader/TimelineParserForKVFilters.java
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF 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.apache.hadoop.yarn.server.timelineservice.reader;
import java.io.IOException;
import org.apache.hadoop.classification.InterfaceAudience.Private;
import org.apache.hadoop.classification.InterfaceStability.Unstable;
import org.apache.hadoop.yarn.server.timeline.GenericObjectMapper;
import org.apache.hadoop.yarn.server.timelineservice.reader.filter.TimelineCompareOp;
import org.apache.hadoop.yarn.server.timelineservice.reader.filter.TimelineFilter;
import org.apache.hadoop.yarn.server.timelineservice.reader.filter.TimelineKeyValueFilter;
/**
* Used for parsing key-value filters such as config and info filters.
*/
@Private
@Unstable
class TimelineParserForKVFilters extends TimelineParserForCompareExpr {
// Indicates if value has to be interpreted as a string.
private final boolean valueAsString;
public TimelineParserForKVFilters(String expression, boolean valAsStr) {
super(expression, "Config/Info Filter");
this.valueAsString = valAsStr;
}
protected TimelineFilter createFilter() {
return new TimelineKeyValueFilter();
}
protected Object parseValue(String strValue) {
if (!valueAsString) {
try {
return GenericObjectMapper.OBJECT_READER.readValue(strValue);
} catch (IOException e) {
return strValue;
}
} else {
return strValue;
}
}
@Override
protected void setCompareOpToCurrentFilter(TimelineCompareOp compareOp,
boolean keyMustExistFlag) throws TimelineParseException {
if (compareOp != TimelineCompareOp.EQUAL &&
compareOp != TimelineCompareOp.NOT_EQUAL) {
throw new TimelineParseException("TimelineCompareOp for kv-filter " +
"should be EQUAL or NOT_EQUAL");
}
((TimelineKeyValueFilter)getCurrentFilter()).setCompareOp(
compareOp, keyMustExistFlag);
}
@Override
protected void setValueToCurrentFilter(Object value) {
TimelineFilter currentFilter = getCurrentFilter();
if (currentFilter != null) {
((TimelineKeyValueFilter)currentFilter).setValue(value);
}
}
}
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