/
ProviderDetector.java
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/
ProviderDetector.java
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package org.apache.maven.surefire.providerapi;
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.
*/
import javax.annotation.Nonnull;
import java.io.IOException;
import java.util.Collections;
import java.util.List;
import java.util.Optional;
import java.util.Set;
import org.apache.maven.surefire.api.provider.SurefireProvider;
import org.codehaus.plexus.component.annotations.Component;
import org.codehaus.plexus.component.annotations.Requirement;
import org.codehaus.plexus.logging.Logger;
import static java.lang.Thread.currentThread;
import static java.util.Arrays.stream;
import static java.util.Collections.emptyList;
import static java.util.stream.Collectors.toList;
/**
* @author Kristian Rosenvold
*/
@Component( role = ProviderDetector.class )
public final class ProviderDetector
{
@Requirement
private Logger logger;
@Requirement
private ServiceLoader serviceLoader;
@Nonnull
public List<ProviderInfo> resolve( ConfigurableProviderInfo dynamicProvider, ProviderInfo... wellKnownProviders )
{
Set<String> manuallyConfiguredProviders = getManuallyConfiguredProviders();
List<ProviderInfo> providersToRun = manuallyConfiguredProviders.stream()
.map( name ->
findByName( name, wellKnownProviders )
.orElseGet( () -> dynamicProvider.instantiate( name ) ) )
.collect( toList() );
providersToRun.forEach( p -> logger.info( "Using configured provider " + p.getProviderName() ) );
if ( providersToRun.isEmpty() )
{
return autoDetectOneWellKnownProvider( wellKnownProviders )
.map( Collections::singletonList )
.orElse( emptyList() );
}
else
{
return Collections.unmodifiableList( providersToRun );
}
}
private Optional<ProviderInfo> autoDetectOneWellKnownProvider( ProviderInfo... wellKnownProviders )
{
Optional<ProviderInfo> providerInfo = stream( wellKnownProviders )
.filter( ProviderInfo::isApplicable )
.findFirst();
providerInfo.ifPresent( p -> logger.info( "Using auto detected provider " + p.getProviderName() ) );
return providerInfo;
}
private Set<String> getManuallyConfiguredProviders()
{
try
{
ClassLoader cl = currentThread().getContextClassLoader();
return serviceLoader.lookup( SurefireProvider.class, cl );
}
catch ( IOException e )
{
throw new RuntimeException( e );
}
}
@Nonnull
private Optional<ProviderInfo> findByName( String providerClassName, ProviderInfo... wellKnownProviders )
{
return stream( wellKnownProviders )
.filter( p -> p.getProviderName().equals( providerClassName ) )
.findFirst();
}
}