/*
* 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.twill.internal.json;
import com.google.gson.JsonDeserializationContext;
import com.google.gson.JsonDeserializer;
import com.google.gson.JsonElement;
import com.google.gson.JsonObject;
import com.google.gson.JsonParseException;
import org.apache.twill.api.logging.LogEntry;
import org.apache.twill.api.logging.LogThrowable;
import java.lang.reflect.Type;
/**
* A Gson decoder for {@link LogEntry}.
*/
public final class LogEntryDecoder implements JsonDeserializer<LogEntry> {
private static final StackTraceElement[] EMPTY_STACK_TRACES = new StackTraceElement[0];
@Override
public LogEntry deserialize(JsonElement json, Type typeOfT,
JsonDeserializationContext context) throws JsonParseException {
if (!json.isJsonObject()) {
return null;
}
JsonObject jsonObj = json.getAsJsonObject();
final String name = JsonUtils.getAsString(jsonObj, "name");
final String host = JsonUtils.getAsString(jsonObj, "host");
final long timestamp = JsonUtils.getAsLong(jsonObj, "timestamp", 0);
final LogEntry.Level logLevel = LogEntry.Level.valueOf(JsonUtils.getAsString(jsonObj, "level"));
final String className = JsonUtils.getAsString(jsonObj, "className");
final String method = JsonUtils.getAsString(jsonObj, "method");
final String file = JsonUtils.getAsString(jsonObj, "file");
final String line = JsonUtils.getAsString(jsonObj, "line");
final String thread = JsonUtils.getAsString(jsonObj, "thread");
final String message = JsonUtils.getAsString(jsonObj, "message");
final LogThrowable logThrowable = context.deserialize(jsonObj.get("throwable"), LogThrowable.class);
return new LogEntry() {
@Override
public String getLoggerName() {
return name;
}
@Override
public String getHost() {
return host;
}
@Override
public long getTimestamp() {
return timestamp;
}
@Override
public Level getLogLevel() {
return logLevel;
}
@Override
public String getSourceClassName() {
return className;
}
@Override
public String getSourceMethodName() {
return method;
}
@Override
public String getFileName() {
return file;
}
@Override
public int getLineNumber() {
if (line.equals("?")) {
return -1;
} else {
return Integer.parseInt(line);
}
}
@Override
public String getThreadName() {
return thread;
}
@Override
public String getMessage() {
return message;
}
@Override
public LogThrowable getThrowable() {
return logThrowable;
}
@Override
public StackTraceElement[] getStackTraces() {
LogThrowable throwable = getThrowable();
return (throwable == null) ? EMPTY_STACK_TRACES : throwable.getStackTraces();
}
};
}
}