com.vlkan.log4j2.logstash.layout.resolver.LevelResolver Maven / Gradle / Ivy
/*
* Copyright 2017-2020 Volkan Yazıcı
*
* 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 permits and
* limitations under the License.
*/
package com.vlkan.log4j2.logstash.layout.resolver;
import com.fasterxml.jackson.core.JsonGenerator;
import org.apache.logging.log4j.core.LogEvent;
import org.apache.logging.log4j.core.net.Severity;
import java.io.IOException;
class LevelResolver implements EventResolver {
private static final EventResolver NAME_RESOLVER = (logEvent, jsonGenerator) -> {
String levelName = logEvent.getLevel().name();
jsonGenerator.writeString(levelName);
};
private static final EventResolver SEVERITY_NAME_RESOLVER = (logEvent, jsonGenerator) -> {
String severityName = Severity.getSeverity(logEvent.getLevel()).name();
jsonGenerator.writeString(severityName);
};
private static final EventResolver SEVERITY_CODE_RESOLVER = (logEvent, jsonGenerator) -> {
int severityCode = Severity.getSeverity(logEvent.getLevel()).getCode();
jsonGenerator.writeNumber(severityCode);
};
private final EventResolver internalResolver;
LevelResolver(String key) {
if (key == null) {
internalResolver = NAME_RESOLVER;
} else if ("severity".equals(key)) {
internalResolver = SEVERITY_NAME_RESOLVER;
} else if ("severity:code".equals(key)) {
internalResolver = SEVERITY_CODE_RESOLVER;
} else {
throw new IllegalArgumentException("unknown key: " + key);
}
}
static String getName() {
return "level";
}
@Override
public void resolve(LogEvent logEvent, JsonGenerator jsonGenerator) throws IOException {
internalResolver.resolve(logEvent, jsonGenerator);
}
}
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