kos.injector.InjectorImplementationLoader Maven / Gradle / Ivy
/*
* Copyright 2019 Skullabs Contributors (https://github.com/skullabs)
*
* 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 kos.injector;
import injector.Injector;
import io.vertx.core.logging.Logger;
import kos.core.ImplementationLoader;
import kos.core.Kos;
import kos.core.Lang.Lazy;
import kos.core.Lang.Result;
import lombok.val;
import java.util.function.Consumer;
public class InjectorImplementationLoader implements ImplementationLoader {
private static final ImplementationLoader spi = new SPIImplementationLoader();
private final Lazy injector = Lazy.by( this::createInjector );
private final Logger logger = Kos.logger(this.getClass());
private Injector createInjector() {
val injectorLogger = Kos.logger(Injector.class);
return Injector.create(false).setLogger(new Consumer() {
@Override
public void accept(String s) {
injectorLogger.debug(s);
}
});
}
@Override
public Iterable instancesExposedAs(Class interfaceType) {
val found = injector.get().instancesExposedAs(interfaceType);
if ( found.iterator().hasNext() )
return found;
return spi.instancesExposedAs(interfaceType);
}
@Override
public Result instanceOf(Class type) {
try {
return Result.of(injector.get().instanceOf(type));
} catch ( IllegalArgumentException cause ) {
logger.debug("Could not get instance of " + type.getCanonicalName(), cause);
return Result.failure(cause);
}
}
}