org.bremersee.exception.feign.FeignClientException Maven / Gradle / Ivy
/*
* Copyright 2019 the original author or 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 org.bremersee.exception.feign;
import feign.FeignException;
import feign.Request;
import java.util.Collection;
import java.util.Collections;
import java.util.Map;
import javax.validation.constraints.NotNull;
import lombok.Getter;
import org.bremersee.exception.ErrorCodeAware;
import org.bremersee.exception.HttpResponseHeadersAware;
import org.bremersee.exception.HttpStatusAware;
import org.bremersee.exception.RestApiExceptionAware;
import org.bremersee.exception.RestApiExceptionUtils;
import org.bremersee.exception.model.RestApiException;
import org.springframework.http.HttpStatus;
import org.springframework.lang.Nullable;
import org.springframework.util.StringUtils;
/**
* Feign exception that stores the error payload as a {@link RestApiException}. If the error payload
* cannot be parsed as {@link RestApiException}, the whole body of the error payload will be stored
* in the message field of the {@link RestApiException}.
*
* @author Christian Bremer
*/
public class FeignClientException extends FeignException implements HttpStatusAware,
HttpResponseHeadersAware, RestApiExceptionAware, ErrorCodeAware {
@Getter
@Nullable
private final Request request;
@NotNull
private final Map> headers;
@Getter
@Nullable
private final RestApiException restApiException;
/**
* Default constructor.
*
* @param request the original request
* @param headers the response headers
* @param status the response status code
* @param message the message of this {@link FeignClientException}
* @param restApiException the rest api exception
*/
@SuppressWarnings("WeakerAccess")
public FeignClientException(
@Nullable final Request request,
@Nullable final Map> headers,
final int status,
@Nullable final String message,
@Nullable final RestApiException restApiException) {
super(
resolveHttpStatusCode(status),
StringUtils.hasText(message)
? message
: RestApiExceptionUtils.NO_MESSAGE_VALUE,
request != null
? request.body()
: null);
this.request = request;
this.headers = headers != null ? headers : Collections.emptyMap();
this.restApiException = restApiException;
}
@Override
public Map getHeaders() {
return HttpResponseHeadersAware.createHeaders(getMultiValueHeaders());
}
@Override
public Map> getMultiValueHeaders() {
return headers;
}
@Override
public String getErrorCode() {
return restApiException != null ? restApiException.getErrorCode() : null;
}
private static int resolveHttpStatusCode(final int httpStatusCode) {
final HttpStatus httpStatus = HttpStatus.resolve(httpStatusCode);
return httpStatus != null ? httpStatus.value() : HttpStatus.INTERNAL_SERVER_ERROR.value();
}
}