dubbo ExceptionUtils 源码
dubbo ExceptionUtils 代码
文件路径：/dubbo-rpc/dubbo-rpc-triple/src/main/java/org/apache/dubbo/rpc/protocol/tri/ExceptionUtils.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.dubbo.rpc.protocol.tri;
import org.apache.dubbo.common.utils.CollectionUtils;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.util.ArrayList;
import java.util.List;
import java.util.StringTokenizer;
public class ExceptionUtils {
private static final int NOT_FOUND = -1;
public static String getStackTrace(final Throwable throwable) {
final StringWriter sw = new StringWriter();
final PrintWriter pw = new PrintWriter(sw, true);
throwable.printStackTrace(pw);
return sw.getBuffer().toString();
}
public static String getStackFrameString(List<String> stackFrameList) {
if (CollectionUtils.isEmpty(stackFrameList)) {
return "";
}
StringBuilder stringBuilder = new StringBuilder();
for (String s : stackFrameList) {
stringBuilder.append(s).append("\n");
}
return stringBuilder.toString();
}
public static String[] getStackFrames(final Throwable throwable) {
if (throwable == null) {
return new String[0];
}
return getStackFrames(getStackTrace(throwable));
}
static String[] getStackFrames(final String stackTrace) {
final String linebreak = System.lineSeparator();
final StringTokenizer frames = new StringTokenizer(stackTrace, linebreak);
final List<String> list = new ArrayList<>();
while (frames.hasMoreTokens()) {
list.add(frames.nextToken());
}
return list.toArray(new String[0]);
}
public static List<String> getStackFrameList(final Throwable t, int maxDepth) {
final String stackTrace = getStackTrace(t);
final String linebreak = System.lineSeparator();
final StringTokenizer frames = new StringTokenizer(stackTrace, linebreak);
final List<String> list = new ArrayList<>();
for (int i = 0; i < maxDepth && frames.hasMoreTokens(); i++) {
list.add(frames.nextToken());
}
return list;
}
public static List<String> getStackFrameList(final Throwable t) {
return getStackFrameList(t, Integer.MAX_VALUE);
}
}
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