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TypedResponse.java
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177 lines (153 loc) · 4.42 KB
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/*
* Copyright 2012-2023 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 feign.Request.ProtocolVersion;
import java.util.Collection;
import java.util.Map;
import static feign.Util.*;
public final class TypedResponse<T> {
private final int status;
private final String reason;
private final Map<String, Collection<String>> headers;
private final T body;
private final Request request;
private final ProtocolVersion protocolVersion;
private TypedResponse(Builder<T> builder) {
checkState(builder.request != null, "original request is required");
this.status = builder.status;
this.request = builder.request;
this.reason = builder.reason; // nullable
this.headers = caseInsensitiveCopyOf(builder.headers);
this.body = builder.body;
this.protocolVersion = builder.protocolVersion;
}
public static <T> Builder<T> builder() {
return new Builder<T>();
}
public static <T> Builder<T> builder(Response source) {
return new Builder<T>(source);
}
public static final class Builder<T> {
int status;
String reason;
Map<String, Collection<String>> headers;
T body;
Request request;
private ProtocolVersion protocolVersion = ProtocolVersion.HTTP_1_1;
Builder() {}
Builder(Response source) {
this.status = source.status();
this.reason = source.reason();
this.headers = source.headers();
this.request = source.request();
this.protocolVersion = source.protocolVersion();
}
/** @see TypedResponse#status */
public Builder status(int status) {
this.status = status;
return this;
}
/** @see TypedResponse#reason */
public Builder reason(String reason) {
this.reason = reason;
return this;
}
/** @see TypedResponse#headers */
public Builder headers(Map<String, Collection<String>> headers) {
this.headers = headers;
return this;
}
/** @see TypedResponse#body */
public Builder body(T body) {
this.body = body;
return this;
}
/**
* @see TypedResponse#request
*/
public Builder request(Request request) {
checkNotNull(request, "request is required");
this.request = request;
return this;
}
/**
* HTTP protocol version
*/
public Builder protocolVersion(ProtocolVersion protocolVersion) {
this.protocolVersion = protocolVersion;
return this;
}
public TypedResponse build() {
return new TypedResponse<T>(this);
}
}
/**
* status code. ex {@code 200}
*
* See <a href="http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html" >rfc2616</a>
*/
public int status() {
return status;
}
/**
* Nullable and not set when using http/2
*
* See https://github.com/http2/http2-spec/issues/202
*/
public String reason() {
return reason;
}
/**
* Returns a case-insensitive mapping of header names to their values.
*/
public Map<String, Collection<String>> headers() {
return headers;
}
/**
* if present, the response had a body
*/
public T body() {
return body;
}
/**
* the request that generated this response
*/
public Request request() {
return request;
}
/**
* the HTTP protocol version
*
* @return HTTP protocol version or empty if a client does not provide it
*/
public ProtocolVersion protocolVersion() {
return protocolVersion;
}
@Override
public String toString() {
StringBuilder builder =
new StringBuilder(protocolVersion.toString()).append(" ").append(status);
if (reason != null)
builder.append(' ').append(reason);
builder.append('\n');
for (String field : headers.keySet()) {
for (String value : valuesOrEmpty(headers, field)) {
builder.append(field).append(": ").append(value).append('\n');
}
}
if (body != null)
builder.append('\n').append(body);
return builder.toString();
}
}