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FeignException.java
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326 lines (281 loc) · 10.2 KB
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/**
* Copyright 2012-2019 The Feign Authors
*
* 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 feign;
import static feign.Util.UTF_8;
import static feign.Util.checkNotNull;
import static java.lang.String.format;
import java.io.IOException;
/**
* Origin exception type for all Http Apis.
*/
public class FeignException extends RuntimeException {
private static final String EXCEPTION_MESSAGE_TEMPLATE_NULL_REQUEST =
"request should not be null";
private static final long serialVersionUID = 0;
private int status;
private byte[] content;
private Request request;
protected FeignException(int status, String message, Throwable cause) {
super(message, cause);
this.status = status;
this.request = null;
}
protected FeignException(int status, String message, Throwable cause, byte[] content) {
super(message, cause);
this.status = status;
this.content = content;
this.request = null;
}
protected FeignException(int status, String message) {
super(message);
this.status = status;
this.request = null;
}
protected FeignException(int status, String message, byte[] content) {
super(message);
this.status = status;
this.content = content;
this.request = null;
}
protected FeignException(int status, String message, Request request, Throwable cause) {
super(message, cause);
this.status = status;
this.request = checkRequestNotNull(request);
}
protected FeignException(int status, String message, Request request, Throwable cause,
byte[] content) {
super(message, cause);
this.status = status;
this.content = content;
this.request = checkRequestNotNull(request);
}
protected FeignException(int status, String message, Request request) {
super(message);
this.status = status;
this.request = checkRequestNotNull(request);
}
protected FeignException(int status, String message, Request request, byte[] content) {
super(message);
this.status = status;
this.content = content;
this.request = checkRequestNotNull(request);
}
private Request checkRequestNotNull(Request request) {
return checkNotNull(request, EXCEPTION_MESSAGE_TEMPLATE_NULL_REQUEST);
}
public int status() {
return this.status;
}
public byte[] content() {
return this.content;
}
public Request request() {
return this.request;
}
public boolean hasRequest() {
return (this.request != null);
}
public String contentUTF8() {
if (content != null) {
return new String(content, UTF_8);
} else {
return "";
}
}
static FeignException errorReading(Request request, Response response, IOException cause) {
return new FeignException(
response.status(),
format("%s reading %s %s", cause.getMessage(), request.httpMethod(), request.url()),
request,
cause,
request.requestBody().asBytes());
}
public static FeignException errorStatus(String methodKey, Response response) {
String message = format("status %s reading %s", response.status(), methodKey);
byte[] body = {};
try {
if (response.body() != null) {
body = Util.toByteArray(response.body().asInputStream());
}
} catch (IOException ignored) { // NOPMD
}
return errorStatus(response.status(), message, response.request(), body);
}
private static FeignException errorStatus(int status,
String message,
Request request,
byte[] body) {
if (isClientError(status)) {
return clientErrorStatus(status, message, request, body);
}
if (isServerError(status)) {
return serverErrorStatus(status, message, request, body);
}
return new FeignException(status, message, request, body);
}
private static boolean isClientError(int status) {
return status >= 400 && status < 500;
}
private static FeignClientException clientErrorStatus(int status,
String message,
Request request,
byte[] body) {
switch (status) {
case 400:
return new BadRequest(message, request, body);
case 401:
return new Unauthorized(message, request, body);
case 403:
return new Forbidden(message, request, body);
case 404:
return new NotFound(message, request, body);
case 405:
return new MethodNotAllowed(message, request, body);
case 406:
return new NotAcceptable(message, request, body);
case 409:
return new Conflict(message, request, body);
case 410:
return new Gone(message, request, body);
case 415:
return new UnsupportedMediaType(message, request, body);
case 429:
return new TooManyRequests(message, request, body);
case 422:
return new UnprocessableEntity(message, request, body);
default:
return new FeignClientException(status, message, request, body);
}
}
private static boolean isServerError(int status) {
return status >= 500 && status <= 599;
}
private static FeignServerException serverErrorStatus(int status,
String message,
Request request,
byte[] body) {
switch (status) {
case 500:
return new InternalServerError(message, request, body);
case 501:
return new NotImplemented(message, request, body);
case 502:
return new BadGateway(message, request, body);
case 503:
return new ServiceUnavailable(message, request, body);
case 504:
return new GatewayTimeout(message, request, body);
default:
return new FeignServerException(status, message, request, body);
}
}
static FeignException errorExecuting(Request request, IOException cause) {
return new RetryableException(
-1,
format("%s executing %s %s", cause.getMessage(), request.httpMethod(), request.url()),
request.httpMethod(),
cause,
null, request);
}
public static class FeignClientException extends FeignException {
public FeignClientException(int status, String message, Request request, byte[] body) {
super(status, message, request, body);
}
}
public static class BadRequest extends FeignClientException {
public BadRequest(String message, Request request, byte[] body) {
super(400, message, request, body);
}
}
public static class Unauthorized extends FeignClientException {
public Unauthorized(String message, Request request, byte[] body) {
super(401, message, request, body);
}
}
public static class Forbidden extends FeignClientException {
public Forbidden(String message, Request request, byte[] body) {
super(403, message, request, body);
}
}
public static class NotFound extends FeignClientException {
public NotFound(String message, Request request, byte[] body) {
super(404, message, request, body);
}
}
public static class MethodNotAllowed extends FeignClientException {
public MethodNotAllowed(String message, Request request, byte[] body) {
super(405, message, request, body);
}
}
public static class NotAcceptable extends FeignClientException {
public NotAcceptable(String message, Request request, byte[] body) {
super(406, message, request, body);
}
}
public static class Conflict extends FeignClientException {
public Conflict(String message, Request request, byte[] body) {
super(409, message, request, body);
}
}
public static class Gone extends FeignClientException {
public Gone(String message, Request request, byte[] body) {
super(410, message, request, body);
}
}
public static class UnsupportedMediaType extends FeignClientException {
public UnsupportedMediaType(String message, Request request, byte[] body) {
super(415, message, request, body);
}
}
public static class TooManyRequests extends FeignClientException {
public TooManyRequests(String message, Request request, byte[] body) {
super(429, message, request, body);
}
}
public static class UnprocessableEntity extends FeignClientException {
public UnprocessableEntity(String message, Request request, byte[] body) {
super(422, message, request, body);
}
}
public static class FeignServerException extends FeignException {
public FeignServerException(int status, String message, Request request, byte[] body) {
super(status, message, request, body);
}
}
public static class InternalServerError extends FeignServerException {
public InternalServerError(String message, Request request, byte[] body) {
super(500, message, request, body);
}
}
public static class NotImplemented extends FeignServerException {
public NotImplemented(String message, Request request, byte[] body) {
super(501, message, request, body);
}
}
public static class BadGateway extends FeignServerException {
public BadGateway(String message, Request request, byte[] body) {
super(502, message, request, body);
}
}
public static class ServiceUnavailable extends FeignServerException {
public ServiceUnavailable(String message, Request request, byte[] body) {
super(503, message, request, body);
}
}
public static class GatewayTimeout extends FeignServerException {
public GatewayTimeout(String message, Request request, byte[] body) {
super(504, message, request, body);
}
}
}