software.xdev.mockserver.mock.action.http.HttpForwardObjectCallbackActionHandler Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of server Show documentation
Show all versions of server Show documentation
MockServer NeoLight Netty Server
/*
* 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.mock.action.http;
import static org.apache.commons.lang3.BooleanUtils.isFalse;
import static org.apache.commons.lang3.BooleanUtils.isTrue;
import static software.xdev.mockserver.closurecallback.websocketregistry.WebSocketClientRegistry.WEB_SOCKET_CORRELATION_ID_HEADER_NAME;
import static software.xdev.mockserver.model.HttpResponse.notFoundResponse;
import java.util.concurrent.CompletableFuture;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import software.xdev.mockserver.closurecallback.websocketregistry.LocalCallbackRegistry;
import software.xdev.mockserver.closurecallback.websocketregistry.WebSocketClientRegistry;
import software.xdev.mockserver.closurecallback.websocketregistry.WebSocketRequestCallback;
import software.xdev.mockserver.httpclient.NettyHttpClient;
import software.xdev.mockserver.mock.HttpState;
import software.xdev.mockserver.mock.action.ExpectationForwardAndResponseCallback;
import software.xdev.mockserver.mock.action.ExpectationForwardCallback;
import software.xdev.mockserver.model.HttpObjectCallback;
import software.xdev.mockserver.model.HttpRequest;
import software.xdev.mockserver.model.HttpRequestAndHttpResponse;
import software.xdev.mockserver.model.HttpResponse;
import software.xdev.mockserver.responsewriter.ResponseWriter;
import software.xdev.mockserver.uuid.UUIDService;
public class HttpForwardObjectCallbackActionHandler extends HttpForwardAction
{
private static final Logger LOG = LoggerFactory.getLogger(HttpForwardObjectCallbackActionHandler.class);
private final WebSocketClientRegistry webSocketClientRegistry;
public HttpForwardObjectCallbackActionHandler(final HttpState httpStateHandler, final NettyHttpClient httpClient)
{
super(httpClient);
this.webSocketClientRegistry = httpStateHandler.getWebSocketClientRegistry();
}
public void handle(
final HttpActionHandler actionHandler,
final HttpObjectCallback httpObjectCallback,
final HttpRequest request,
final ResponseWriter responseWriter,
final boolean synchronous,
final Runnable expectationPostProcessor)
{
final String clientId = httpObjectCallback.getClientId();
if(LocalCallbackRegistry.forwardClientExists(clientId))
{
this.handleLocally(actionHandler, httpObjectCallback, request, responseWriter, synchronous, clientId);
}
else
{
this.handleViaWebSocket(
actionHandler,
httpObjectCallback,
request,
responseWriter,
synchronous,
expectationPostProcessor,
clientId);
}
}
@SuppressWarnings("PMD.CognitiveComplexity")
private void handleLocally(
final HttpActionHandler actionHandler,
final HttpObjectCallback httpObjectCallback,
final HttpRequest request,
final ResponseWriter responseWriter,
final boolean synchronous,
final String clientId)
{
if(LOG.isTraceEnabled())
{
LOG.trace("Locally sending request {} to client {}", request, clientId);
}
final ExpectationForwardCallback expectationForwardCallback =
LocalCallbackRegistry.retrieveForwardCallback(clientId);
try
{
final HttpRequest callbackRequest = expectationForwardCallback.handle(request);
final HttpForwardActionResult responseFuture = this.sendRequest(
callbackRequest,
null,
null
);
final ExpectationForwardAndResponseCallback expectationForwardAndResponseCallback =
LocalCallbackRegistry.retrieveForwardAndResponseCallback(clientId);
if(expectationForwardAndResponseCallback != null)
{
actionHandler.executeAfterForwardActionResponse(responseFuture, (httpResponse, exception) -> {
if(httpResponse != null)
{
try
{
final HttpResponse callbackResponse =
expectationForwardAndResponseCallback.handle(callbackRequest, httpResponse);
actionHandler.writeForwardActionResponse(
callbackResponse,
responseWriter,
request,
httpObjectCallback);
}
catch(final Throwable ex2)
{
if(LOG.isWarnEnabled())
{
LOG.warn(
"Returning {} because client {} response callback threw an exception",
notFoundResponse(),
clientId,
ex2);
}
actionHandler.writeForwardActionResponse(
this.notFoundFuture(request),
responseWriter,
request,
httpObjectCallback,
synchronous);
}
}
else if(exception != null)
{
actionHandler.handleExceptionDuringForwardingRequest(
httpObjectCallback,
request,
responseWriter,
exception);
}
}, synchronous);
}
else
{
actionHandler.writeForwardActionResponse(
responseFuture,
responseWriter,
request,
httpObjectCallback,
synchronous);
}
}
catch(final Exception ex)
{
if(LOG.isWarnEnabled())
{
LOG.warn(
"Returning {} because client {} request callback throw an exception",
notFoundResponse(),
clientId,
ex);
}
actionHandler.writeForwardActionResponse(
this.notFoundFuture(request),
responseWriter,
request,
httpObjectCallback,
synchronous);
}
}
@SuppressWarnings("PMD.CognitiveComplexity")
private void handleViaWebSocket(
final HttpActionHandler actionHandler,
final HttpObjectCallback httpObjectCallback,
final HttpRequest request,
final ResponseWriter responseWriter,
final boolean synchronous,
final Runnable expectationPostProcessor,
final String clientId)
{
final String webSocketCorrelationId = UUIDService.getUUID();
this.webSocketClientRegistry.registerForwardCallbackHandler(
webSocketCorrelationId,
new WebSocketRequestCallback()
{
@Override
public void handle(final HttpRequest callbackRequest)
{
if(LOG.isTraceEnabled())
{
LOG.trace(
"Received request over websocket {} from client {} for correlationId {}",
callbackRequest,
clientId,
webSocketCorrelationId);
}
final HttpForwardActionResult responseFuture =
HttpForwardObjectCallbackActionHandler.this.sendRequest(
callbackRequest.removeHeader(WEB_SOCKET_CORRELATION_ID_HEADER_NAME),
null,
null
);
if(LOG.isTraceEnabled())
{
LOG.trace("Received response for request {} from client {}", callbackRequest, clientId);
}
HttpForwardObjectCallbackActionHandler.this.webSocketClientRegistry
.unregisterForwardCallbackHandler(webSocketCorrelationId);
if(expectationPostProcessor != null && isFalse(httpObjectCallback.getResponseCallback()))
{
expectationPostProcessor.run();
}
if(isTrue(httpObjectCallback.getResponseCallback()))
{
HttpForwardObjectCallbackActionHandler.this.handleResponseViaWebSocket(
callbackRequest,
responseFuture,
actionHandler,
webSocketCorrelationId,
clientId,
expectationPostProcessor,
responseWriter,
httpObjectCallback,
synchronous);
}
else
{
actionHandler.writeForwardActionResponse(
responseFuture,
responseWriter,
callbackRequest,
httpObjectCallback,
synchronous);
}
}
@Override
public void handleError(final HttpResponse httpResponse)
{
if(LOG.isDebugEnabled())
{
LOG.debug(
"Error sending request over websocket for client {} for correlationId {}",
clientId,
webSocketCorrelationId);
}
HttpForwardObjectCallbackActionHandler.this.webSocketClientRegistry
.unregisterForwardCallbackHandler(webSocketCorrelationId);
actionHandler.writeResponseActionResponse(
httpResponse,
responseWriter,
request,
httpObjectCallback,
synchronous);
}
});
if(!this.webSocketClientRegistry.sendClientMessage(
clientId,
request.clone().withHeader(WEB_SOCKET_CORRELATION_ID_HEADER_NAME, webSocketCorrelationId),
null))
{
if(LOG.isWarnEnabled())
{
LOG.warn(
"Returning {} because client {} has closed web socket connection",
notFoundResponse(),
clientId);
}
actionHandler.writeForwardActionResponse(
this.notFoundFuture(request),
responseWriter,
request,
httpObjectCallback,
synchronous);
}
else if(LOG.isTraceEnabled())
{
LOG.trace(
"Sending request over websocket {} to client {} for correlationId {}",
request,
clientId,
webSocketCorrelationId);
}
}
@SuppressWarnings("PMD.CognitiveComplexity")
private void handleResponseViaWebSocket(
final HttpRequest request,
final HttpForwardActionResult responseFuture,
final HttpActionHandler actionHandler,
final String webSocketCorrelationId,
final String clientId,
final Runnable expectationPostProcessor,
final ResponseWriter responseWriter,
final HttpObjectCallback httpObjectCallback,
final boolean synchronous)
{
actionHandler.executeAfterForwardActionResponse(responseFuture, (httpResponse, exception) -> {
if(httpResponse != null)
{
// register callback for overridden response
final CompletableFuture httpResponseCompletableFuture = new CompletableFuture<>();
this.webSocketClientRegistry.registerResponseCallbackHandler(
webSocketCorrelationId,
overriddenResponse -> {
if(LOG.isTraceEnabled())
{
LOG.trace(
"Received response over websocket {} for request and response {} from "
+ "client {} for correlationId {}",
overriddenResponse,
new HttpRequestAndHttpResponse()
.withHttpRequest(request)
.withHttpResponse(httpResponse),
clientId,
webSocketCorrelationId);
}
this.webSocketClientRegistry.unregisterResponseCallbackHandler(webSocketCorrelationId);
if(expectationPostProcessor != null)
{
expectationPostProcessor.run();
}
httpResponseCompletableFuture.complete(overriddenResponse.removeHeader(
WEB_SOCKET_CORRELATION_ID_HEADER_NAME));
});
// send websocket message to override response
if(!this.webSocketClientRegistry.sendClientMessage(
clientId,
request.clone().withHeader(WEB_SOCKET_CORRELATION_ID_HEADER_NAME, webSocketCorrelationId),
httpResponse))
{
if(LOG.isWarnEnabled())
{
LOG.warn(
"Returning {} because client {} has closed web socket connection",
notFoundResponse(),
clientId);
}
actionHandler.writeForwardActionResponse(
this.notFoundFuture(request),
responseWriter,
request,
httpObjectCallback,
synchronous);
}
else if(LOG.isTraceEnabled())
{
LOG.trace(
"Sending request over websocket {} to client {} for correlationId {}",
request,
clientId,
webSocketCorrelationId);
}
// return overridden response
actionHandler.writeForwardActionResponse(
responseFuture.setHttpResponse(httpResponseCompletableFuture),
responseWriter,
request,
httpObjectCallback,
synchronous);
}
else if(exception != null)
{
actionHandler.handleExceptionDuringForwardingRequest(
httpObjectCallback,
request,
responseWriter,
exception);
}
}, synchronous);
}
}