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io.cucumber.core.runtime.Runtime Maven / Gradle / Ivy
package io.cucumber.core.runtime;
import io.cucumber.core.eventbus.EventBus;
import io.cucumber.core.feature.FeatureParser;
import io.cucumber.core.filter.Filters;
import io.cucumber.core.gherkin.Feature;
import io.cucumber.core.gherkin.Pickle;
import io.cucumber.core.logging.Logger;
import io.cucumber.core.logging.LoggerFactory;
import io.cucumber.core.options.RuntimeOptions;
import io.cucumber.core.order.PickleOrder;
import io.cucumber.core.plugin.PluginFactory;
import io.cucumber.core.plugin.Plugins;
import io.cucumber.core.resource.ClassLoaders;
import io.cucumber.plugin.Plugin;
import java.time.Clock;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import java.util.UUID;
import java.util.concurrent.AbstractExecutorService;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;
import java.util.concurrent.ThreadFactory;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.function.Predicate;
import java.util.function.Supplier;
import static io.cucumber.core.exception.ExceptionUtils.throwAsUncheckedException;
import static io.cucumber.core.exception.UnrecoverableExceptions.rethrowIfUnrecoverable;
import static io.cucumber.core.runtime.SynchronizedEventBus.synchronize;
import static java.util.Collections.emptyList;
import static java.util.stream.Collectors.collectingAndThen;
import static java.util.stream.Collectors.toList;
/**
* This is the main entry point for running Cucumber features from the CLI.
*/
public final class Runtime {
private static final Logger log = LoggerFactory.getLogger(Runtime.class);
private final ExitStatus exitStatus;
private final Predicate filter;
private final int limit;
private final FeatureSupplier featureSupplier;
private final ExecutorService executor;
private final PickleOrder pickleOrder;
private final CucumberExecutionContext context;
private Runtime(
final ExitStatus exitStatus,
final CucumberExecutionContext context,
final Predicate filter,
final int limit,
final FeatureSupplier featureSupplier,
final ExecutorService executor,
final PickleOrder pickleOrder
) {
this.filter = filter;
this.context = context;
this.limit = limit;
this.featureSupplier = featureSupplier;
this.executor = executor;
this.exitStatus = exitStatus;
this.pickleOrder = pickleOrder;
}
public static Builder builder() {
return new Builder();
}
public void run() {
// Parse the features early. Don't proceed when there are lexer errors
List features = featureSupplier.get();
context.startTestRun();
execute(() -> {
context.runBeforeAllHooks();
runFeatures(features);
});
try {
execute(context::runAfterAllHooks);
} finally {
context.finishTestRun();
}
Throwable exception = context.getThrowable();
if (exception != null) {
throwAsUncheckedException(exception);
}
}
private void execute(Runnable runnable) {
try {
runnable.run();
} catch (Throwable t) {
// Collected in CucumberExecutionContext
rethrowIfUnrecoverable(t);
}
}
private void runFeatures(List features) {
features.forEach(context::beforeFeature);
List> executingPickles = features.stream()
.flatMap(feature -> feature.getPickles().stream())
.filter(filter)
.collect(collectingAndThen(toList(),
list -> pickleOrder.orderPickles(list).stream()))
.limit(limit > 0 ? limit : Integer.MAX_VALUE)
.map(pickle -> executor.submit(executePickle(pickle)))
.collect(toList());
executor.shutdown();
for (Future executingPickle : executingPickles) {
try {
executingPickle.get();
} catch (ExecutionException e) {
log.error(e, () -> "Exception while executing pickle");
} catch (InterruptedException e) {
log.debug(e, () -> "Interrupted while executing pickle");
executor.shutdownNow();
}
}
}
private Runnable executePickle(Pickle pickle) {
return () -> context.runTestCase(runner -> runner.runPickle(pickle));
}
public byte exitStatus() {
return exitStatus.exitStatus();
}
public static class Builder {
private EventBus eventBus = new TimeServiceEventBus(Clock.systemUTC(), UUID::randomUUID);
private Supplier classLoader = ClassLoaders::getDefaultClassLoader;
private RuntimeOptions runtimeOptions = RuntimeOptions.defaultOptions();
private BackendSupplier backendSupplier;
private FeatureSupplier featureSupplier;
private List additionalPlugins = emptyList();
private Builder() {
}
public Builder withRuntimeOptions(final RuntimeOptions runtimeOptions) {
this.runtimeOptions = runtimeOptions;
return this;
}
public Builder withClassLoader(final Supplier classLoader) {
this.classLoader = classLoader;
return this;
}
public Builder withBackendSupplier(final BackendSupplier backendSupplier) {
this.backendSupplier = backendSupplier;
return this;
}
public Builder withFeatureSupplier(final FeatureSupplier featureSupplier) {
this.featureSupplier = featureSupplier;
return this;
}
public Builder withAdditionalPlugins(final Plugin... plugins) {
this.additionalPlugins = Arrays.asList(plugins);
return this;
}
public Builder withEventBus(final EventBus eventBus) {
this.eventBus = eventBus;
return this;
}
public Runtime build() {
final ObjectFactoryServiceLoader objectFactoryServiceLoader = new ObjectFactoryServiceLoader(classLoader,
runtimeOptions);
final ObjectFactorySupplier objectFactorySupplier = runtimeOptions.isMultiThreaded()
? new ThreadLocalObjectFactorySupplier(objectFactoryServiceLoader)
: new SingletonObjectFactorySupplier(objectFactoryServiceLoader);
final BackendSupplier backendSupplier = this.backendSupplier != null
? this.backendSupplier
: new BackendServiceLoader(this.classLoader, objectFactorySupplier);
final Plugins plugins = new Plugins(new PluginFactory(), runtimeOptions);
for (final Plugin plugin : additionalPlugins) {
plugins.addPlugin(plugin);
}
final ExitStatus exitStatus = new ExitStatus(runtimeOptions);
plugins.addPlugin(exitStatus);
final EventBus eventBus = synchronize(this.eventBus);
if (runtimeOptions.isMultiThreaded()) {
plugins.setSerialEventBusOnEventListenerPlugins(eventBus);
} else {
plugins.setEventBusOnEventListenerPlugins(eventBus);
}
final RunnerSupplier runnerSupplier = runtimeOptions.isMultiThreaded()
? new ThreadLocalRunnerSupplier(runtimeOptions, eventBus, backendSupplier, objectFactorySupplier)
: new SingletonRunnerSupplier(runtimeOptions, eventBus, backendSupplier, objectFactorySupplier);
final ExecutorService executor = runtimeOptions.isMultiThreaded()
? Executors.newFixedThreadPool(runtimeOptions.getThreads(), new CucumberThreadFactory())
: new SameThreadExecutorService();
final FeatureParser parser = new FeatureParser(eventBus::generateId);
final FeatureSupplier featureSupplier = this.featureSupplier != null
? this.featureSupplier
: new FeaturePathFeatureSupplier(classLoader, runtimeOptions, parser);
final Predicate filter = new Filters(runtimeOptions);
final int limit = runtimeOptions.getLimitCount();
final PickleOrder pickleOrder = runtimeOptions.getPickleOrder();
final CucumberExecutionContext context = new CucumberExecutionContext(eventBus, exitStatus, runnerSupplier);
return new Runtime(exitStatus, context, filter, limit, featureSupplier, executor, pickleOrder);
}
}
private static final class CucumberThreadFactory implements ThreadFactory {
private static final AtomicInteger poolNumber = new AtomicInteger(1);
private final AtomicInteger threadNumber = new AtomicInteger(1);
private final String namePrefix;
CucumberThreadFactory() {
this.namePrefix = "cucumber-runner-" + poolNumber.getAndIncrement() + "-thread-";
}
@Override
public Thread newThread(Runnable r) {
return new Thread(r, namePrefix + this.threadNumber.getAndIncrement());
}
}
private static final class SameThreadExecutorService extends AbstractExecutorService {
@Override
public void execute(Runnable command) {
command.run();
}
@Override
public void shutdown() {
// no-op
}
@Override
public List shutdownNow() {
return Collections.emptyList();
}
@Override
public boolean isShutdown() {
return true;
}
@Override
public boolean isTerminated() {
return true;
}
@Override
public boolean awaitTermination(long timeout, TimeUnit unit) {
return true;
}
}
}
