nl.talsmasoftware.context.functions.BooleanSupplierWithContext Maven / Gradle / Ivy
/*
* Copyright 2016-2019 Talsma ICT
*
* 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 nl.talsmasoftware.context.functions;
import nl.talsmasoftware.context.Context;
import nl.talsmasoftware.context.ContextManagers;
import nl.talsmasoftware.context.ContextSnapshot;
import java.util.function.BooleanSupplier;
import java.util.function.Consumer;
import java.util.function.Supplier;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
* A wrapper for {@link BooleanSupplier} that {@link ContextSnapshot#reactivate() reactivates a context snapshot} before
* calling a delegate.
*
* @author Sjoerd Talsma
*/
public class BooleanSupplierWithContext extends WrapperWithContextAndConsumer implements BooleanSupplier {
private static final Logger LOGGER = Logger.getLogger(BooleanSupplierWithContext.class.getName());
public BooleanSupplierWithContext(ContextSnapshot snapshot, BooleanSupplier delegate) {
this(snapshot, delegate, null);
}
public BooleanSupplierWithContext(ContextSnapshot snapshot, BooleanSupplier delegate, Consumer consumer) {
super(snapshot, delegate, consumer);
}
protected BooleanSupplierWithContext(Supplier supplier, BooleanSupplier delegate, Consumer consumer) {
super(supplier, delegate, consumer);
}
@Override
public boolean getAsBoolean() {
try (Context context = snapshot().reactivate()) {
try { // inner 'try' is needed: https://github.com/talsma-ict/context-propagation/pull/56#discussion_r201590623
LOGGER.log(Level.FINEST, "Delegating getAsBoolean method with {0} to {1}.", new Object[]{context, delegate()});
return nonNullDelegate().getAsBoolean();
} finally {
if (contextSnapshotConsumer != null) {
ContextSnapshot resultSnapshot = ContextManagers.createContextSnapshot();
LOGGER.log(Level.FINEST, "Captured context snapshot after delegation: {0}", resultSnapshot);
contextSnapshotConsumer.accept(resultSnapshot);
}
}
}
}
}