org.elasticsearch.ExceptionsHelper Maven / Gradle / Ivy
/*
* Licensed to ElasticSearch and Shay Banon under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. ElasticSearch 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.elasticsearch;
import org.elasticsearch.common.logging.ESLogger;
import org.elasticsearch.common.logging.Loggers;
import org.elasticsearch.rest.RestStatus;
/**
*
*/
public final class ExceptionsHelper {
private static final ESLogger logger = Loggers.getLogger(ExceptionsHelper.class);
public static RestStatus status(Throwable t) {
if (t instanceof ElasticSearchException) {
return ((ElasticSearchException) t).status();
}
return RestStatus.INTERNAL_SERVER_ERROR;
}
public static Throwable unwrapCause(Throwable t) {
int counter = 0;
Throwable result = t;
while (result instanceof ElasticSearchWrapperException) {
if (result.getCause() == null) {
return result;
}
if (result.getCause() == result) {
return result;
}
if (counter++ > 10) {
// dear god, if we got more than 10 levels down, WTF? just bail
logger.warn("Exception cause unwrapping ran for 10 levels...", t);
return result;
}
result = result.getCause();
}
return result;
}
public static String detailedMessage(Throwable t) {
return detailedMessage(t, false, 0);
}
public static String detailedMessage(Throwable t, boolean newLines, int initialCounter) {
if (t == null) {
return "Unknown";
}
int counter = initialCounter + 1;
if (t.getCause() != null) {
StringBuilder sb = new StringBuilder();
while (t != null) {
sb.append(t.getClass().getSimpleName());
if (t.getMessage() != null) {
sb.append("[");
sb.append(t.getMessage());
sb.append("]");
}
if (!newLines) {
sb.append("; ");
}
t = t.getCause();
if (t != null) {
if (newLines) {
sb.append("\n");
for (int i = 0; i < counter; i++) {
sb.append("\t");
}
} else {
sb.append("nested: ");
}
}
counter++;
}
return sb.toString();
} else {
return t.getClass().getSimpleName() + "[" + t.getMessage() + "]";
}
}
}