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org.mockserver.dashboard.DashboardWebSocketServerHandler Maven / Gradle / Ivy
package org.mockserver.dashboard;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.google.common.collect.ImmutableMap;
import io.netty.channel.ChannelFutureListener;
import io.netty.channel.ChannelHandler;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInboundHandlerAdapter;
import io.netty.handler.codec.http.DefaultHttpHeaders;
import io.netty.handler.codec.http.FullHttpRequest;
import io.netty.handler.codec.http.websocketx.*;
import io.netty.util.AttributeKey;
import io.netty.util.ReferenceCountUtil;
import org.mockserver.collections.CircularHashMap;
import org.mockserver.dashboard.model.DashboardLogEntryDTO;
import org.mockserver.dashboard.serializers.DashboardLogEntryDTOSerializer;
import org.mockserver.dashboard.serializers.ThrowableSerializer;
import org.mockserver.log.MockServerEventLog;
import org.mockserver.log.model.LogEntry;
import org.mockserver.logging.MockServerLogger;
import org.mockserver.matchers.TimeToLive;
import org.mockserver.matchers.Times;
import org.mockserver.mock.Expectation;
import org.mockserver.mock.HttpStateHandler;
import org.mockserver.mock.MockServerMatcher;
import org.mockserver.model.HttpRequest;
import org.mockserver.serialization.HttpRequestSerializer;
import org.mockserver.serialization.ObjectMapperFactory;
import org.mockserver.ui.MockServerLogListener;
import org.mockserver.ui.MockServerMatcherListener;
import org.mockserver.ui.MockServerMatcherNotifier;
import org.slf4j.event.Level;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.concurrent.*;
import java.util.function.Predicate;
import java.util.stream.Collectors;
import static com.google.common.net.HttpHeaders.HOST;
import static java.util.concurrent.TimeUnit.SECONDS;
import static org.mockserver.exception.ExceptionHandling.connectionClosedException;
import static org.mockserver.log.model.LogEntry.LogMessageType.*;
import static org.mockserver.model.HttpRequest.request;
/**
* @author jamesdbloom
*/
@ChannelHandler.Sharable
public class DashboardWebSocketServerHandler extends ChannelInboundHandlerAdapter implements MockServerLogListener, MockServerMatcherListener {
private static final Predicate requestLogPredicate = input
-> input.getType() == RECEIVED_REQUEST;
private static final Predicate requestResponseLogPredicate = input
-> input.getType() == EXPECTATION_RESPONSE
|| input.getType() == EXPECTATION_NOT_MATCHED_RESPONSE
|| input.getType() == FORWARDED_REQUEST;
private static final Predicate recordedExpectationLogPredicate = input
-> input.getType() == FORWARDED_REQUEST;
private static final AttributeKey CHANNEL_UPGRADED_FOR_UI_WEB_SOCKET = AttributeKey.valueOf("CHANNEL_UPGRADED_FOR_UI_WEB_SOCKET");
private static final String UPGRADE_CHANNEL_FOR_UI_WEB_SOCKET_URI = "/_mockserver_ui_websocket";
private static final int UI_UPDATE_ITEM_LIMIT = 50;
private static ObjectMapper objectMapper;
private final MockServerLogger mockServerLogger;
private final boolean sslEnabledUpstream;
private final HttpStateHandler httpStateHandler;
private HttpRequestSerializer httpRequestSerializer;
private WebSocketServerHandshaker handshaker;
private final Map clientRegistry = new CircularHashMap<>(100);
private MockServerMatcher mockServerMatcher;
private MockServerEventLog mockServerEventLog;
private ThreadPoolExecutor scheduler;
private ScheduledExecutorService throttleExecutorService;
private Semaphore semaphore;
public DashboardWebSocketServerHandler(HttpStateHandler httpStateHandler, boolean sslEnabledUpstream) {
this.httpStateHandler = httpStateHandler;
this.mockServerLogger = httpStateHandler.getMockServerLogger();
this.sslEnabledUpstream = sslEnabledUpstream;
}
@Override
public void handlerAdded(ChannelHandlerContext ctx) {
try {
scheduler = new ThreadPoolExecutor(
1,
1,
0L,
SECONDS,
new LinkedBlockingQueue<>(1),
Executors.defaultThreadFactory(),
new ThreadPoolExecutor.DiscardOldestPolicy()
);
} catch (Throwable throwable) {
mockServerLogger.logEvent(
new LogEntry()
.setType(LogEntry.LogMessageType.EXCEPTION)
.setLogLevel(Level.ERROR)
.setMessageFormat("exception creating scheduler " + throwable.getMessage())
.setThrowable(throwable)
);
}
}
@Override
public void handlerRemoved(ChannelHandlerContext ctx) {
if (this.scheduler != null) {
scheduler.shutdown();
}
if (this.throttleExecutorService != null) {
throttleExecutorService.shutdownNow();
}
}
@Override
public void channelRead(ChannelHandlerContext ctx, Object msg) {
boolean release = true;
try {
if (msg instanceof FullHttpRequest && ((FullHttpRequest) msg).uri().equals(UPGRADE_CHANNEL_FOR_UI_WEB_SOCKET_URI)) {
upgradeChannel(ctx, (FullHttpRequest) msg);
ctx.channel().attr(CHANNEL_UPGRADED_FOR_UI_WEB_SOCKET).set(true);
} else if (ctx.channel().attr(CHANNEL_UPGRADED_FOR_UI_WEB_SOCKET).get() != null &&
ctx.channel().attr(CHANNEL_UPGRADED_FOR_UI_WEB_SOCKET).get() &&
msg instanceof WebSocketFrame) {
handleWebSocketFrame(ctx, (WebSocketFrame) msg);
} else {
release = false;
ctx.fireChannelRead(msg);
}
} finally {
if (release) {
ReferenceCountUtil.release(msg);
}
}
}
@Override
public void channelReadComplete(ChannelHandlerContext ctx) {
ctx.flush();
}
private void upgradeChannel(final ChannelHandlerContext ctx, FullHttpRequest httpRequest) {
if (mockServerEventLog == null) {
mockServerEventLog = httpStateHandler.getMockServerLog();
mockServerEventLog.registerListener(this);
mockServerMatcher = httpStateHandler.getMockServerMatcher();
mockServerMatcher.registerListener(this);
}
String webSocketURL = (sslEnabledUpstream ? "wss" : "ws") + "://" + httpRequest.headers().get(HOST) + UPGRADE_CHANNEL_FOR_UI_WEB_SOCKET_URI;
mockServerLogger.logEvent(
new LogEntry()
.setType(DEBUG)
.setLogLevel(Level.DEBUG)
.setMessageFormat("upgraded dashboard connection to support web sockets on url{}")
.setArguments(webSocketURL)
);
handshaker = new WebSocketServerHandshakerFactory(
webSocketURL,
null,
true,
Integer.MAX_VALUE
).newHandshaker(httpRequest);
if (handshaker == null) {
WebSocketServerHandshakerFactory.sendUnsupportedVersionResponse(ctx.channel());
} else {
handshaker.handshake(
ctx.channel(),
httpRequest,
new DefaultHttpHeaders(),
ctx.channel().newPromise()
).addListener((ChannelFutureListener) future -> clientRegistry.put(ctx, request()));
}
if (objectMapper == null) {
objectMapper = ObjectMapperFactory.createObjectMapper(
new DashboardLogEntryDTOSerializer(),
new ThrowableSerializer()
);
}
if (httpRequestSerializer == null) {
httpRequestSerializer = new HttpRequestSerializer(mockServerLogger);
}
if (semaphore == null) {
semaphore = new Semaphore(1);
}
if (throttleExecutorService == null) {
throttleExecutorService = Executors.newScheduledThreadPool(1);
}
if (scheduler == null) {
scheduler = new ThreadPoolExecutor(
1,
1,
0L,
SECONDS,
new LinkedBlockingQueue<>(10),
Executors.defaultThreadFactory(),
new ThreadPoolExecutor.DiscardOldestPolicy()
);
}
throttleExecutorService.scheduleAtFixedRate(() -> {
if (semaphore.availablePermits() == 0) {
semaphore.release(1);
}
}, 0, 1, SECONDS);
}
private void handleWebSocketFrame(final ChannelHandlerContext ctx, WebSocketFrame frame) {
if (frame instanceof CloseWebSocketFrame) {
handshaker.close(ctx.channel(), (CloseWebSocketFrame) frame.retain()).addListener((ChannelFutureListener) future -> clientRegistry.remove(ctx));
} else if (frame instanceof TextWebSocketFrame) {
try {
HttpRequest httpRequest = httpRequestSerializer.deserialize(((TextWebSocketFrame) frame).text());
clientRegistry.put(ctx, httpRequest);
sendUpdate(httpRequest, ctx);
} catch (IllegalArgumentException iae) {
sendMessage(ctx, ImmutableMap.of("error", iae.getMessage()));
}
} else if (frame instanceof PingWebSocketFrame) {
ctx.write(new PongWebSocketFrame(frame.content().retain()));
} else {
throw new UnsupportedOperationException(frame.getClass().getName() + " frame types not supported");
}
}
private void sendMessage(ChannelHandlerContext ctx, ImmutableMap message) {
if (semaphore.tryAcquire()) {
scheduler.submit(() -> {
try {
ctx.writeAndFlush(new TextWebSocketFrame(
objectMapper.writeValueAsString(message)
));
} catch (JsonProcessingException jpe) {
mockServerLogger.logEvent(
new LogEntry()
.setType(LogEntry.LogMessageType.EXCEPTION)
.setLogLevel(Level.ERROR)
.setMessageFormat("exception will serialising UI data " + jpe.getMessage())
.setThrowable(jpe)
);
}
});
}
}
@Override
public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
if (connectionClosedException(cause)) {
mockServerLogger.logEvent(
new LogEntry()
.setType(LogEntry.LogMessageType.EXCEPTION)
.setLogLevel(Level.ERROR)
.setMessageFormat("web socket server caught exception")
.setThrowable(cause)
);
}
ctx.close();
}
@Override
public void channelInactive(ChannelHandlerContext ctx) {
if (mockServerMatcher != null) {
mockServerMatcher.unregisterListener(this);
}
if (mockServerEventLog != null) {
mockServerEventLog.unregisterListener(this);
}
ctx.fireChannelInactive();
}
@Override
public void updated(MockServerEventLog mockServerLog) {
for (Map.Entry registryEntry : clientRegistry.entrySet()) {
sendUpdate(registryEntry.getValue(), registryEntry.getKey());
}
}
@Override
public void updated(MockServerMatcher mockServerMatcher, MockServerMatcherNotifier.Cause cause) {
for (Map.Entry registryEntry : clientRegistry.entrySet()) {
sendUpdate(registryEntry.getValue(), registryEntry.getKey());
}
}
private void sendUpdate(HttpRequest httpRequest, ChannelHandlerContext channelHandlerContext) {
mockServerEventLog
.retrieveLogEntriesInReverse(
httpRequest,
logEntry -> true,
DashboardLogEntryDTO::new,
reverseLogEventsStream -> {
List> recordedExpectations = new ArrayList<>();
List> recordedRequests = new ArrayList<>();
List recordedRequestResponses = new ArrayList<>();
List logMessages = new ArrayList<>();
reverseLogEventsStream
.forEach(logEntryDTO -> {
if (recordedExpectationLogPredicate.test(logEntryDTO)
&& recordedExpectations.size() < UI_UPDATE_ITEM_LIMIT) {
recordedExpectations.add(
ImmutableMap.of(
"key", logEntryDTO.getId(),
"value", new Expectation(logEntryDTO.getHttpRequest(), Times.once(), TimeToLive.unlimited())
.thenRespond(logEntryDTO.getHttpResponse())
)
);
}
if (requestLogPredicate.test(logEntryDTO)
&& recordedRequests.size() < UI_UPDATE_ITEM_LIMIT) {
HttpRequest[] httpRequests = logEntryDTO.getHttpRequests();
for (int i = 0; i < httpRequests.length; i++) {
recordedRequests.add(ImmutableMap.of(
"key", logEntryDTO.getId() + i,
"value", httpRequests[i]
));
}
}
if (requestResponseLogPredicate.test(logEntryDTO)
&& recordedRequestResponses.size() < UI_UPDATE_ITEM_LIMIT) {
recordedRequestResponses.add(logEntryDTO);
}
if (logMessages.size() < UI_UPDATE_ITEM_LIMIT) {
logMessages.add(logEntryDTO);
}
});
sendMessage(channelHandlerContext, ImmutableMap.of(
"activeExpectations", mockServerMatcher
.retrieveActiveExpectations(httpRequest)
.stream()
.limit(UI_UPDATE_ITEM_LIMIT)
.map(expectation -> ImmutableMap.of(
"key", expectation.getId(),
"value", expectation
))
.collect(Collectors.toList()),
"recordedExpectations", recordedExpectations,
"recordedRequests", recordedRequests,
"recordedRequestResponses", recordedRequestResponses,
"logMessages", logMessages
));
}
);
}
}
