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MockServer NeoLight Core
/*
* Copyright © 2024 XDEV Software (https://xdev.software)
*
* 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 software.xdev.mockserver.mappers;
import static io.netty.handler.codec.http.HttpHeaderNames.CONTENT_LENGTH;
import static io.netty.handler.codec.http.HttpHeaderNames.CONTENT_TYPE;
import static io.netty.handler.codec.http.HttpHeaderNames.SET_COOKIE;
import static software.xdev.mockserver.util.StringUtils.isBlank;
import static software.xdev.mockserver.util.StringUtils.isEmpty;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import io.netty.buffer.ByteBuf;
import io.netty.handler.codec.http.DefaultFullHttpResponse;
import io.netty.handler.codec.http.DefaultHttpContent;
import io.netty.handler.codec.http.DefaultHttpObject;
import io.netty.handler.codec.http.DefaultHttpResponse;
import io.netty.handler.codec.http.DefaultLastHttpContent;
import io.netty.handler.codec.http.HttpHeaderNames;
import io.netty.handler.codec.http.HttpHeaderValues;
import io.netty.handler.codec.http.HttpResponseStatus;
import io.netty.handler.codec.http.HttpUtil;
import io.netty.handler.codec.http.HttpVersion;
import io.netty.handler.codec.http.cookie.DefaultCookie;
import io.netty.handler.codec.http2.HttpConversionUtil;
import software.xdev.mockserver.codec.BodyDecoderEncoder;
import software.xdev.mockserver.model.ConnectionOptions;
import software.xdev.mockserver.model.HttpResponse;
import software.xdev.mockserver.model.NottableString;
public class MockServerHttpResponseToFullHttpResponse
{
private static final Logger LOG = LoggerFactory.getLogger(MockServerHttpResponseToFullHttpResponse.class);
private final BodyDecoderEncoder bodyDecoderEncoder;
public MockServerHttpResponseToFullHttpResponse()
{
this.bodyDecoderEncoder = new BodyDecoderEncoder();
}
public List mapMockServerResponseToNettyResponse(final HttpResponse httpResponse)
{
try
{
final ConnectionOptions connectionOptions = httpResponse.getConnectionOptions();
if(connectionOptions != null && connectionOptions.getChunkSize() != null
&& connectionOptions.getChunkSize() > 0)
{
final List httpMessages = new ArrayList<>();
final ByteBuf body = this.getBody(httpResponse);
final DefaultHttpResponse defaultHttpResponse = new DefaultHttpResponse(
HttpVersion.HTTP_1_1,
this.getStatus(httpResponse)
);
this.setHeaders(httpResponse, defaultHttpResponse, body);
HttpUtil.setTransferEncodingChunked(defaultHttpResponse, true);
this.setCookies(httpResponse, defaultHttpResponse);
httpMessages.add(defaultHttpResponse);
final ByteBuf[] chunks = this.bodyDecoderEncoder.bodyToByteBuf(
httpResponse.getBody(),
httpResponse.getFirstHeader(CONTENT_TYPE.toString()),
connectionOptions.getChunkSize());
for(int i = 0; i < chunks.length - 1; i++)
{
final DefaultHttpContent defaultHttpContent = new DefaultHttpContent(chunks[i]);
httpMessages.add(defaultHttpContent);
}
httpMessages.add(new DefaultLastHttpContent(chunks[chunks.length - 1]));
return httpMessages;
}
else
{
final ByteBuf body = this.getBody(httpResponse);
final DefaultFullHttpResponse defaultFullHttpResponse = new DefaultFullHttpResponse(
HttpVersion.HTTP_1_1,
this.getStatus(httpResponse),
body
);
this.setHeaders(httpResponse, defaultFullHttpResponse, body);
this.setCookies(httpResponse, defaultFullHttpResponse);
return Collections.singletonList(defaultFullHttpResponse);
}
}
catch(final Exception ex)
{
LOG.error("Exception encoding response {}", httpResponse, ex);
return Collections.singletonList(new DefaultFullHttpResponse(
HttpVersion.HTTP_1_1,
this.getStatus(httpResponse)));
}
}
@SuppressWarnings("checkstyle:MagicNumber")
private HttpResponseStatus getStatus(final HttpResponse httpResponse)
{
final int statusCode = httpResponse.getStatusCode() != null ? httpResponse.getStatusCode() : 200;
if(!isEmpty(httpResponse.getReasonPhrase()))
{
return new HttpResponseStatus(statusCode, httpResponse.getReasonPhrase());
}
else
{
return HttpResponseStatus.valueOf(statusCode);
}
}
private ByteBuf getBody(final HttpResponse httpResponse)
{
return this.bodyDecoderEncoder.bodyToByteBuf(
httpResponse.getBody(),
httpResponse.getFirstHeader(CONTENT_TYPE.toString()));
}
private void setHeaders(final HttpResponse httpResponse, final DefaultHttpResponse response, final ByteBuf body)
{
if(httpResponse.getHeaderMultimap() != null)
{
httpResponse
.getHeaderMultimap()
.entrySet()
.stream()
.flatMap(e -> e.getValue().stream().map(e2 -> Map.entry(e.getKey(), e2.getValue())))
.forEach(entry ->
response
.headers()
.add(entry.getKey().getValue(), entry.getValue())
);
}
// Content-Type
if(isBlank(httpResponse.getFirstHeader(CONTENT_TYPE.toString())))
{
if(httpResponse.getBody() != null
&& httpResponse.getBody().getContentType() != null)
{
response.headers().set(CONTENT_TYPE, httpResponse.getBody().getContentType());
}
}
// Content-Length
final ConnectionOptions connectionOptions = httpResponse.getConnectionOptions();
if(isBlank(httpResponse.getFirstHeader(CONTENT_LENGTH.toString())))
{
final boolean overrideContentLength =
connectionOptions != null && connectionOptions.getContentLengthHeaderOverride() != null;
final boolean addContentLength =
connectionOptions == null || !Boolean.TRUE.equals(connectionOptions.getSuppressContentLengthHeader());
final boolean chunkedEncoding =
(connectionOptions != null && connectionOptions.getChunkSize() != null) || response.headers()
.contains(HttpHeaderNames.TRANSFER_ENCODING);
if(overrideContentLength)
{
response.headers().set(CONTENT_LENGTH, connectionOptions.getContentLengthHeaderOverride());
}
else if(addContentLength && !chunkedEncoding)
{
response.headers().set(CONTENT_LENGTH, body.readableBytes());
}
if(chunkedEncoding)
{
response.headers().set(HttpHeaderNames.TRANSFER_ENCODING, HttpHeaderValues.CHUNKED);
}
}
// HTTP2 extension headers
final Integer streamId = httpResponse.getStreamId();
if(streamId != null)
{
response.headers().add(HttpConversionUtil.ExtensionHeaderNames.STREAM_ID.text(), streamId);
}
}
private void setCookies(final HttpResponse httpResponse, final DefaultHttpResponse response)
{
if(httpResponse.getCookieMap() != null)
{
for(final Map.Entry cookie : httpResponse.getCookieMap().entrySet())
{
if(httpResponse.cookieHeaderDoesNotAlreadyExists(
cookie.getKey().getValue(),
cookie.getValue().getValue()))
{
response.headers()
.add(
SET_COOKIE,
io.netty.handler.codec.http.cookie.ServerCookieEncoder.LAX.encode(
new DefaultCookie(cookie.getKey().getValue(), cookie.getValue().getValue())));
}
}
}
}
}