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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;
import static software.xdev.mockserver.logging.LoggingMessages.CREATED_EXPECTATION_MESSAGE_FORMAT;
import static software.xdev.mockserver.logging.LoggingMessages.REMOVED_EXPECTATION_MESSAGE_FORMAT;
import static software.xdev.mockserver.logging.LoggingMessages.UPDATED_EXPECTATION_MESSAGE_FORMAT;
import static software.xdev.mockserver.mock.SortableExpectationId.EXPECTATION_SORTABLE_PRIORITY_COMPARATOR;
import static software.xdev.mockserver.mock.SortableExpectationId.NULL;
import static software.xdev.mockserver.util.StringUtils.isBlank;
import static software.xdev.mockserver.util.StringUtils.isNotBlank;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Objects;
import java.util.Optional;
import java.util.Set;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.stream.Collectors;
import java.util.stream.Stream;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import software.xdev.mockserver.closurecallback.websocketregistry.WebSocketClientRegistry;
import software.xdev.mockserver.collections.CircularHashMap;
import software.xdev.mockserver.collections.CircularPriorityQueue;
import software.xdev.mockserver.configuration.ServerConfiguration;
import software.xdev.mockserver.matchers.HttpRequestMatcher;
import software.xdev.mockserver.matchers.MatchDifference;
import software.xdev.mockserver.matchers.MatcherBuilder;
import software.xdev.mockserver.mock.listeners.MockServerMatcherNotifier;
import software.xdev.mockserver.model.Action;
import software.xdev.mockserver.model.ExpectationId;
import software.xdev.mockserver.model.HttpObjectCallback;
import software.xdev.mockserver.model.HttpRequest;
import software.xdev.mockserver.model.RequestDefinition;
import software.xdev.mockserver.scheduler.Scheduler;
import software.xdev.mockserver.uuid.UUIDService;
public class RequestMatchers extends MockServerMatcherNotifier
{
private static final Logger LOG = LoggerFactory.getLogger(RequestMatchers.class);
final CircularPriorityQueue httpRequestMatchers;
final CircularHashMap expectationRequestDefinitions;
private final ServerConfiguration configuration;
private final Scheduler scheduler;
private final WebSocketClientRegistry webSocketClientRegistry;
private final MatcherBuilder matcherBuilder;
public RequestMatchers(
final ServerConfiguration configuration,
final Scheduler scheduler,
final WebSocketClientRegistry webSocketClientRegistry)
{
super(scheduler);
this.configuration = configuration;
this.scheduler = scheduler;
this.matcherBuilder = new MatcherBuilder(configuration);
this.webSocketClientRegistry = webSocketClientRegistry;
this.httpRequestMatchers = new CircularPriorityQueue<>(
configuration.maxExpectations(),
EXPECTATION_SORTABLE_PRIORITY_COMPARATOR,
httpRequestMatcher -> httpRequestMatcher.getExpectation() != null
? httpRequestMatcher.getExpectation().getSortableId()
: NULL,
httpRequestMatcher -> httpRequestMatcher.getExpectation() != null
? httpRequestMatcher.getExpectation().getId()
: ""
);
this.expectationRequestDefinitions = new CircularHashMap<>(configuration.maxExpectations());
if(LOG.isTraceEnabled())
{
LOG.trace("Expectation circular priority queue created, with size {}", configuration.maxExpectations());
}
}
public Expectation add(final Expectation expectation, final Cause cause)
{
Expectation upsertedExpectation = null;
if(expectation != null)
{
this.expectationRequestDefinitions.put(expectation.getId(), expectation.getHttpRequest());
upsertedExpectation = this.httpRequestMatchers
.getByKey(expectation.getId())
.map(httpRequestMatcher -> {
if(httpRequestMatcher.getExpectation() != null)
{
// propagate created time from previous entry to avoid re-ordering on update
expectation.withCreated(httpRequestMatcher.getExpectation().getCreated());
}
this.httpRequestMatchers.removePriorityKey(httpRequestMatcher);
if(httpRequestMatcher.update(expectation))
{
this.httpRequestMatchers.addPriorityKey(httpRequestMatcher);
if(LOG.isInfoEnabled())
{
LOG.info(UPDATED_EXPECTATION_MESSAGE_FORMAT, expectation.clone(), expectation.getId());
}
}
else
{
this.httpRequestMatchers.addPriorityKey(httpRequestMatcher);
}
return httpRequestMatcher;
})
.orElseGet(() -> this.addPrioritisedExpectation(expectation, cause))
.getExpectation();
this.notifyListeners(this, cause);
}
return upsertedExpectation;
}
@SuppressWarnings("PMD.CognitiveComplexity")
public void update(final Expectation[] expectations, final Cause cause)
{
final AtomicInteger numberOfChanges = new AtomicInteger(0);
if(expectations != null)
{
final Map httpRequestMatchersByKey = this.httpRequestMatchers.keyMap();
final Set existingKeysForCause = httpRequestMatchersByKey
.entrySet()
.stream()
.filter(entry -> entry.getValue().getSource().equals(cause))
.map(Map.Entry::getKey)
.collect(Collectors.toSet());
final Set addedIds = new HashSet<>();
Arrays
.stream(expectations)
.forEach(expectation -> {
// ensure duplicate ids are skipped in input array
if(!addedIds.contains(expectation.getId()))
{
addedIds.add(expectation.getId());
this.expectationRequestDefinitions.put(expectation.getId(), expectation.getHttpRequest());
existingKeysForCause.remove(expectation.getId());
if(httpRequestMatchersByKey.containsKey(expectation.getId()))
{
final HttpRequestMatcher httpRequestMatcher =
httpRequestMatchersByKey.get(expectation.getId());
// update source to new cause
httpRequestMatcher.withSource(cause);
if(httpRequestMatcher.getExpectation() != null)
{
// propagate created time from previous entry to avoid re-ordering on update
expectation.withCreated(httpRequestMatcher.getExpectation().getCreated());
}
this.httpRequestMatchers.removePriorityKey(httpRequestMatcher);
if(httpRequestMatcher.update(expectation))
{
this.httpRequestMatchers.addPriorityKey(httpRequestMatcher);
numberOfChanges.getAndIncrement();
if(LOG.isInfoEnabled())
{
LOG.info(
UPDATED_EXPECTATION_MESSAGE_FORMAT,
expectation.clone(),
expectation.getId());
}
}
else
{
this.httpRequestMatchers.addPriorityKey(httpRequestMatcher);
}
}
else
{
this.addPrioritisedExpectation(expectation, cause);
numberOfChanges.getAndIncrement();
}
}
});
existingKeysForCause
.forEach(key -> {
numberOfChanges.getAndIncrement();
final HttpRequestMatcher httpRequestMatcher = httpRequestMatchersByKey.get(key);
this.removeHttpRequestMatcher(httpRequestMatcher, cause, false, UUIDService.getUUID());
});
if(numberOfChanges.get() > 0)
{
this.notifyListeners(this, cause);
}
}
}
private HttpRequestMatcher addPrioritisedExpectation(final Expectation expectation, final Cause cause)
{
final HttpRequestMatcher httpRequestMatcher = this.matcherBuilder.transformsToMatcher(expectation);
this.httpRequestMatchers.add(httpRequestMatcher);
httpRequestMatcher.withSource(cause);
if(LOG.isInfoEnabled())
{
LOG.info(CREATED_EXPECTATION_MESSAGE_FORMAT, expectation.clone(), expectation.getId());
}
return httpRequestMatcher;
}
public int size()
{
return this.httpRequestMatchers.size();
}
public void reset(final Cause cause)
{
this.httpRequestMatchers.stream()
.forEach(httpRequestMatcher -> this.removeHttpRequestMatcher(
httpRequestMatcher,
cause,
false,
UUIDService.getUUID()));
this.expectationRequestDefinitions.clear();
this.notifyListeners(this, cause);
}
public void reset()
{
this.reset(Cause.API);
}
public Expectation firstMatchingExpectation(final HttpRequest httpRequest)
{
final Optional first = this.getHttpRequestMatchersCopy()
.map(httpRequestMatcher -> {
Expectation matchingExpectation = null;
boolean remainingMatchesDecremented = false;
if(httpRequestMatcher.matches(LOG.isDebugEnabled()
? new MatchDifference(this.configuration.detailedMatchFailures(), httpRequest)
: null, httpRequest))
{
matchingExpectation = httpRequestMatcher.getExpectation();
httpRequestMatcher.setResponseInProgress(true);
if(matchingExpectation.decrementRemainingMatches())
{
remainingMatchesDecremented = true;
}
}
else if(!httpRequestMatcher.isResponseInProgress() && !httpRequestMatcher.isActive())
{
this.scheduler.submit(() -> this.removeHttpRequestMatcher(
httpRequestMatcher,
UUIDService.getUUID()));
}
if(remainingMatchesDecremented)
{
this.notifyListeners(this, Cause.API);
}
return matchingExpectation;
})
.filter(Objects::nonNull)
.findFirst();
return first.orElse(null);
}
public void clear(final RequestDefinition requestDefinition)
{
if(requestDefinition != null)
{
final HttpRequestMatcher clearHttpRequestMatcher =
this.matcherBuilder.transformsToMatcher(requestDefinition);
this.getHttpRequestMatchersCopy().forEach(httpRequestMatcher -> {
RequestDefinition request = httpRequestMatcher
.getExpectation()
.getHttpRequest();
if(isNotBlank(requestDefinition.getLogCorrelationId()))
{
request = request
.shallowClone()
.withLogCorrelationId(requestDefinition.getLogCorrelationId());
}
if(clearHttpRequestMatcher.matches(request))
{
this.removeHttpRequestMatcher(httpRequestMatcher, requestDefinition.getLogCorrelationId());
}
});
if(LOG.isInfoEnabled())
{
LOG.info("Cleared expectations that match: {}", requestDefinition);
}
}
else
{
this.reset();
}
}
public void clear(final ExpectationId expectationId, final String logCorrelationId)
{
if(expectationId != null)
{
this.httpRequestMatchers
.getByKey(expectationId.getId())
.ifPresent(httpRequestMatcher -> this.removeHttpRequestMatcher(httpRequestMatcher, logCorrelationId));
if(LOG.isInfoEnabled())
{
LOG.info("Cleared expectations that have id: {}", expectationId.getId());
}
}
else
{
this.reset();
}
}
Expectation postProcess(final Expectation expectation)
{
if(expectation != null)
{
this.getHttpRequestMatchersCopy()
.filter(httpRequestMatcher -> httpRequestMatcher.getExpectation() == expectation)
.findFirst()
.ifPresent(httpRequestMatcher -> {
if(!expectation.isActive())
{
this.removeHttpRequestMatcher(httpRequestMatcher, UUIDService.getUUID());
}
httpRequestMatcher.setResponseInProgress(false);
});
}
return expectation;
}
private void removeHttpRequestMatcher(final HttpRequestMatcher httpRequestMatcher, final String logCorrelationId)
{
this.removeHttpRequestMatcher(httpRequestMatcher, Cause.API, true, logCorrelationId);
}
@SuppressWarnings("rawtypes")
private void removeHttpRequestMatcher(
final HttpRequestMatcher httpRequestMatcher,
final Cause cause,
final boolean notifyAndUpdateMetrics,
final String logCorrelationId)
{
if(this.httpRequestMatchers.remove(httpRequestMatcher))
{
if(httpRequestMatcher.getExpectation() != null && LOG.isInfoEnabled())
{
final Expectation expectation = httpRequestMatcher.getExpectation().clone();
LOG.info(REMOVED_EXPECTATION_MESSAGE_FORMAT, expectation, expectation.getId());
}
if(httpRequestMatcher.getExpectation() != null)
{
final Action action = httpRequestMatcher.getExpectation().getAction();
if(action instanceof final HttpObjectCallback callback)
{
this.webSocketClientRegistry.unregisterClient(callback.getClientId());
}
}
if(notifyAndUpdateMetrics)
{
this.notifyListeners(this, cause);
}
}
}
public Stream retrieveRequestDefinitions(final List expectationIds)
{
return expectationIds
.stream()
.map(expectationId -> {
if(isBlank(expectationId.getId()))
{
throw new IllegalArgumentException(
"No expectation id specified found \"" + expectationId.getId() + "\"");
}
if(this.expectationRequestDefinitions.containsKey(expectationId.getId()))
{
return this.expectationRequestDefinitions.get(expectationId.getId());
}
else
{
throw new IllegalArgumentException("No expectation found with id " + expectationId.getId());
}
})
.filter(Objects::nonNull);
}
public List retrieveActiveExpectations(final RequestDefinition requestDefinition)
{
if(requestDefinition == null)
{
return this.httpRequestMatchers.stream()
.map(HttpRequestMatcher::getExpectation)
.collect(Collectors.toList());
}
else
{
final List expectations = new ArrayList<>();
final HttpRequestMatcher requestMatcher = this.matcherBuilder.transformsToMatcher(requestDefinition);
this.getHttpRequestMatchersCopy().forEach(httpRequestMatcher -> {
if(requestMatcher.matches(httpRequestMatcher.getExpectation().getHttpRequest()))
{
expectations.add(httpRequestMatcher.getExpectation());
}
});
return expectations;
}
}
public List retrieveRequestMatchers(final RequestDefinition requestDefinition)
{
if(requestDefinition == null)
{
return this.httpRequestMatchers.stream().collect(Collectors.toList());
}
else
{
final List httpRequestMatchers = new ArrayList<>();
final HttpRequestMatcher requestMatcher = this.matcherBuilder.transformsToMatcher(requestDefinition);
this.getHttpRequestMatchersCopy().forEach(httpRequestMatcher -> {
if(requestMatcher.matches(httpRequestMatcher.getExpectation().getHttpRequest()))
{
httpRequestMatchers.add(httpRequestMatcher);
}
});
return httpRequestMatchers;
}
}
public boolean isEmpty()
{
return this.httpRequestMatchers.isEmpty();
}
@Override
protected void notifyListeners(final RequestMatchers notifier, final Cause cause)
{
super.notifyListeners(notifier, cause);
}
private Stream getHttpRequestMatchersCopy()
{
return this.httpRequestMatchers.stream();
}
@Override
public boolean equals(final Object o)
{
if(this == o)
{
return true;
}
if(!(o instanceof final RequestMatchers that))
{
return false;
}
if(!super.equals(o))
{
return false;
}
return Objects.equals(this.httpRequestMatchers, that.httpRequestMatchers)
&& Objects.equals(this.expectationRequestDefinitions, that.expectationRequestDefinitions)
&& Objects.equals(this.configuration, that.configuration)
&& Objects.equals(this.scheduler, that.scheduler)
&& Objects.equals(this.webSocketClientRegistry, that.webSocketClientRegistry)
&& Objects.equals(this.matcherBuilder, that.matcherBuilder);
}
@Override
public int hashCode()
{
return Objects.hash(
super.hashCode(),
this.httpRequestMatchers,
this.expectationRequestDefinitions,
this.configuration,
this.scheduler,
this.webSocketClientRegistry,
this.matcherBuilder);
}
}