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InvocationContext.java
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executable file
·144 lines (126 loc) · 4.25 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 static feign.FeignException.errorReading;
import static feign.Util.ensureClosed;
import feign.codec.DecodeException;
import feign.codec.Decoder;
import feign.codec.ErrorDecoder;
import java.io.IOException;
import java.lang.reflect.Type;
public class InvocationContext {
private static final long MAX_RESPONSE_BUFFER_SIZE = 8192L;
private final String configKey;
private final Decoder decoder;
private final ErrorDecoder errorDecoder;
private final boolean dismiss404;
private final boolean closeAfterDecode;
private final boolean decodeVoid;
private final Response response;
private final Type returnType;
InvocationContext(
String configKey,
Decoder decoder,
ErrorDecoder errorDecoder,
boolean dismiss404,
boolean closeAfterDecode,
boolean decodeVoid,
Response response,
Type returnType) {
this.configKey = configKey;
this.decoder = decoder;
this.errorDecoder = errorDecoder;
this.dismiss404 = dismiss404;
this.closeAfterDecode = closeAfterDecode;
this.decodeVoid = decodeVoid;
this.response = response;
this.returnType = returnType;
}
public Decoder decoder() {
return decoder;
}
public Type returnType() {
return returnType;
}
7C62
public Response response() {
return response;
}
public Object proceed() throws Exception {
if (returnType == Response.class) {
return disconnectResponseBodyIfNeeded(response);
}
try {
final boolean shouldDecodeResponseBody =
(response.status() >= 200 && response.status() < 300)
|| (response.status() == 404 && dismiss404 && !isVoidType(returnType));
if (!shouldDecodeResponseBody) {
throw decodeError(configKey, response);
}
if (isVoidType(returnType) && !decodeVoid) {
ensureClosed(response.body());
return null;
}
Class<?> rawType = Types.getRawType(returnType);
if (TypedResponse.class.isAssignableFrom(rawType)) {
Type bodyType = Types.resolveLastTypeParameter(returnType, TypedResponse.class);
return TypedResponse.builder(response).body(decode(response, bodyType)).build();
}
return decode(response, returnType);
} finally {
if (closeAfterDecode) {
ensureClosed(response.body());
}
}
}
private static Response disconnectResponseBodyIfNeeded(Response response) throws IOException {
final boolean shouldDisconnectResponseBody =
response.body() != null
&& response.body().length() != null
&& response.body().length() <= MAX_RESPONSE_BUFFER_SIZE;
if (!shouldDisconnectResponseBody) {
return response;
}
try {
final byte[] bodyData = Util.toByteArray(response.body().asInputStream());
return response.toBuilder().body(bodyData).build();
} finally {
ensureClosed(response.body());
}
}
private Object decode(Response response, Type returnType) {
try {
return decoder.decode(response, returnType);
} catch (final FeignException e) {
throw e;
} catch (final RuntimeException e) {
throw new DecodeException(response.status(), e.getMessage(), response.request(), e);
} catch (IOException e) {
throw errorReading(response.request(), response, e);
}
}
private Exception decodeError(String methodKey, Response response) {
try {
return errorDecoder.decode(methodKey, response);
} finally {
ensureClosed(response.body());
}
}
private boolean isVoidType(Type returnType) {
return returnType == Void.class
|| returnType == void.class
|| returnType.getTypeName().equals("kotlin.Unit");
}
}