com.navercorp.pinpoint.grpc.StatusErrors Maven / Gradle / Ivy
/*
* Copyright 2019 NAVER Corp.
*
* 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 permissions and
* limitations under the License.
*/
package com.navercorp.pinpoint.grpc;
import io.grpc.Status;
import io.grpc.StatusRuntimeException;
/**
* @author jaehong.kim
*/
public class StatusErrors {
private static final String CONNECTION_REFUSED_MESSAGE = "Connection refused: no further information";
private static final String CANCELLED_BEFORE_RECEIVING_HALF_CLOSE = "CANCELLED: cancelled before receiving half close";
public static StatusError throwable(final Throwable t) {
if (t instanceof StatusRuntimeException) {
StatusRuntimeException exception = (StatusRuntimeException) t;
if (exception.getStatus().getCode() == Status.UNAVAILABLE.getCode()) {
final String causeMessage = findCauseMessage(t, CONNECTION_REFUSED_MESSAGE, 2);
if (causeMessage != null) {
final String message = exception.getStatus().getDescription() + ": " + causeMessage;
return new SimpleStatusError(message, t);
}
} else if (exception.getStatus().getCode() == Status.CANCELLED.getCode()) {
if (exception.getMessage() != null && exception.getMessage().startsWith(CANCELLED_BEFORE_RECEIVING_HALF_CLOSE)) {
return new SimpleStatusError(CANCELLED_BEFORE_RECEIVING_HALF_CLOSE, t);
}
}
}
return new DefaultStatusError(t);
}
private static String findCauseMessage(final Throwable t, final String message, final int maxDepth) {
int depth = 0;
Throwable cause = t.getCause();
while (cause != null && depth < maxDepth) {
if (cause.getMessage().startsWith(message)) {
return cause.getMessage();
}
if (cause.getCause() == cause) {
break;
}
cause = cause.getCause();
depth += 1;
}
// Not found
return null;
}
private static class SimpleStatusError implements StatusError {
private final String message;
private final Throwable throwable;
public SimpleStatusError(final String message, final Throwable throwable) {
this.message = message;
this.throwable = throwable;
}
@Override
public boolean isSimpleError() {
return true;
}
@Override
public String getMessage() {
return this.message;
}
@Override
public Throwable getThrowable() {
return this.throwable;
}
}
private static class DefaultStatusError implements StatusError {
private final Throwable throwable;
public DefaultStatusError(final Throwable throwable) {
this.throwable = throwable;
}
@Override
public boolean isSimpleError() {
return false;
}
@Override
public String getMessage() {
if (this.throwable != null) {
return this.throwable.getMessage();
}
return "";
}
@Override
public Throwable getThrowable() {
return this.throwable;
}
}
}