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RetryableException.java
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269 lines (253 loc) · 9.58 KB
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/*
* Copyright © 2012 The Feign Authors (feign@commonhaus.dev)
*
* 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 feign.Request.HttpMethod;
import java.util.Collection;
import java.util.Date;
import java.util.Map;
/**
* This exception is raised when the {@link Response} is deemed to be retryable, typically via an
* {@link feign.codec.ErrorDecoder} when the {@link Response#status() status} is 503.
*/
public class RetryableException extends FeignException {
private static final long serialVersionUID = 3L;
private final Long retryAfter;
private final HttpMethod httpMethod;
private final String methodKey;
/**
* Represents a non-retryable exception when Retry-After information is explicitly not provided.
*
* <p>Use this constructor when the server response does not include a Retry-After header or when
* retries are not expected.
*
* @param status the HTTP status code
* @param message the exception message
* @param httpMethod the HTTP method (GET, POST, etc.)
* @param request the original HTTP request
*/
public RetryableException(int status, String message, HttpMethod httpMethod, Request request) {
super(status, message, request);
this.httpMethod = httpMethod;
this.retryAfter = null;
this.methodKey = null;
}
/**
* Represents a non-retryable exception when Retry-After information is explicitly not provided.
*
* <p>Use this constructor when the server response does not include a Retry-After header or when
* retries are not expected.
*
* @param status the HTTP status code
* @param message the exception message
* @param httpMethod the HTTP method (GET, POST, etc.)
* @param cause the underlying cause of the exception
* @param request the original HTTP request
*/
public RetryableException(
int status, String message, HttpMethod httpMethod, Throwable cause, Request request) {
super(status, message, request, cause);
this.httpMethod = httpMethod;
this.retryAfter = null;
this.methodKey = null;
}
/**
* Represents a retryable exception when Retry-After information is available.
*
* <p>Use this constructor when the server response includes a Retry-After header specifying the
* delay in milliseconds before retrying.
*
* <p>If {@code retryAfter} is {@code null}, prefer using {@link #RetryableException(int, String,
* HttpMethod, Throwable, Request)} instead.
*
* @param status the HTTP status code
* @param message the exception message
* @param httpMethod the HTTP method (GET, POST, etc.)
* @param cause the underlying cause of the exception
* @param retryAfter the retry delay in milliseconds retryAfter usually corresponds to the {@link
* feign.Util#RETRY_AFTER} header. If you don't want to retry, use {@link
* #RetryableException(int, String, HttpMethod, Throwable, Request)}.
* @param request the original HTTP request
*/
public RetryableException(
int status,
String message,
HttpMethod httpMethod,
Throwable cause,
Long retryAfter,
Request request) {
super(status, message, request, cause);
this.httpMethod = httpMethod;
this.retryAfter = retryAfter;
this.methodKey = null;
}
/**
* Represents a retryable exception with methodKey for identifying the method being retried.
*
* @param status the HTTP status code
* @param message the exception message
* @param httpMethod the HTTP method (GET, POST, etc.)
* @param cause the underlying cause of the exception
* @param retryAfter the retry delay in milliseconds
* @param request the original HTTP request
* @param methodKey the method key identifying the Feign method
*/
public RetryableException(
int status,
String message,
HttpMethod httpMethod,
Throwable cause,
Long retryAfter,
Request request,
String methodKey) {
super(status, message, request, cause);
this.httpMethod = httpMethod;
this.retryAfter = retryAfter;
this.methodKey = methodKey;
}
/**
* @deprecated Use {@link #RetryableException(int, String, HttpMethod, Throwable, Long, Request)}
* instead. This constructor uses {@link Date} for retryAfter, which has been replaced by
* {@link Long}.
* @param status the HTTP status code
* @param message the exception message
* @param httpMethod the HTTP method (GET, POST, etc.)
* @param cause the underlying cause of the exception
* @param retryAfter the retry-after time as a {@link Date}
* @param request the original HTTP request
*/
@Deprecated
public RetryableException(
int status,
String message,
HttpMethod httpMethod,
Throwable cause,
Date retryAfter,
Request request) {
super(status, message, request, cause);
this.httpMethod = httpMethod;
this.retryAfter = retryAfter != null ? retryAfter.getTime() : null;
this.methodKey = null;
}
/**
* Represents a retryable exception when Retry-After information is available.
*
* <p>Use this constructor when the server response includes a Retry-After header.
*
* @param status the HTTP status code
* @param message the exception message
* @param httpMethod the HTTP method (GET, POST, etc.)
* @param retryAfter the retry delay in milliseconds retryAfter usually corresponds to the {@link
* feign.Util#RETRY_AFTER} header. If you don't want to retry, use {@link
* #RetryableException(int, String, HttpMethod, Request)}
* @param request the original HTTP request
*/
public RetryableException(
int status, String message, HttpMethod httpMethod, Long retryAfter, Request request) {
super(status, message, request);
this.httpMethod = httpMethod;
this.retryAfter = retryAfter;
this.methodKey = null;
}
/**
* @deprecated Use {@link #RetryableException(int, String, HttpMethod, Long, Request)} instead.
* This constructor uses {@link Date} for retryAfter, which has been replaced by {@link Long}.
* @param status the HTTP status code
* @param message the exception message
* @param httpMethod the HTTP method (GET, POST, etc.)
* @param retryAfter the retry-after time as a {@link Date}
* @param request the original HTTP request
*/
@Deprecated
public RetryableException(
int status, String message, HttpMethod httpMethod, Date retryAfter, Request request) {
super(status, message, request);
this.httpMethod = httpMethod;
this.retryAfter = retryAfter != null ? retryAfter.getTime() : null;
this.methodKey = null;
}
/**
* Represents a retryable exception with response body and headers.
*
* <p>Use this constructor when handling HTTP responses that include Retry-After information.
*
* @param status the HTTP status code
* @param message the exception message
* @param httpMethod the HTTP method (GET, POST, etc.)
* @param retryAfter the retry delay in milliseconds retryAfter usually corresponds to the {@link
* feign.Util#RETRY_AFTER} header.
* @param request the original HTTP request
* @param responseBody the HTTP response body
* @param responseHeaders the HTTP response headers
*/
public RetryableException(
int status,
String message,
HttpMethod httpMethod,
Long retryAfter,
Request request,
byte[] responseBody,
Map<String, Collection<String>> responseHeaders) {
super(status, message, request, responseBody, responseHeaders);
this.httpMethod = httpMethod;
this.retryAfter = retryAfter;
this.methodKey = null;
}
/**
* @deprecated Use {@link #RetryableException(int, String, HttpMethod, Long, Request, byte[],
* Map)} instead. This constructor uses {@link Date} for retryAfter, which has been replaced
* by {@link Long}.
* @param status the HTTP status code
* @param message the exception message
* @param httpMethod the HTTP method (GET, POST, etc.)
* @param retryAfter the retry-after time as a {@link Date}
* @param request the original HTTP request
* @param responseBody the HTTP response body
* @param responseHeaders the HTTP response headers
*/
@Deprecated
public RetryableException(
int status,
String message,
HttpMethod httpMethod,
Date retryAfter,
Request request,
byte[] responseBody,
Map<String, Collection<String>> responseHeaders) {
super(status, message, request, responseBody, responseHeaders);
this.httpMethod = httpMethod;
this.retryAfter = retryAfter != null ? retryAfter.getTime() : null;
this.methodKey = null;
}
/**
* Sometimes corresponds to the {@link feign.Util#RETRY_AFTER} header present in {@code 503}
* status. Other times parsed from an application-specific response. Null if unknown.
*/
public Long retryAfter() {
return retryAfter;
}
public HttpMethod method() {
return this.httpMethod;
}
/**
* Returns the method key identifying the Feign method that was being invoked. This corresponds to
* the methodKey parameter in {@link feign.codec.ErrorDecoder#decode}.
*
* @return the method key, or null if not set
*/
public String methodKey() {
return this.methodKey;
}
}