be.objectify.deadbolt.java.actions.DeferredDeadboltAction Maven / Gradle / Ivy

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/*
 * Copyright 2012 Steve Chaloner
 *
 * 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 be.objectify.deadbolt.java.actions;

import be.objectify.deadbolt.java.ExecutionContextProvider;
import be.objectify.deadbolt.java.JavaAnalyzer;
import be.objectify.deadbolt.java.cache.HandlerCache;
import be.objectify.deadbolt.java.cache.SubjectCache;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import play.Configuration;
import play.libs.F;
import play.mvc.Http;
import play.mvc.Result;
import scala.concurrent.ExecutionContext;

import java.util.concurrent.TimeUnit;

import javax.inject.Inject;

/**
 * Executes a deferred method-level annotation.  Ideally, the associated annotation would be placed
 * above any other class-level Deadbolt annotations in order to still have things fire in the correct order.
 *
 * @author Steve Chaloner ([email protected])
 */
public class DeferredDeadboltAction extends AbstractDeadboltAction
{
    private static final Logger LOGGER = LoggerFactory.getLogger(DeferredDeadboltAction.class);

    @Inject
    public DeferredDeadboltAction(final JavaAnalyzer analyzer,
                                  final SubjectCache subjectCache,
                                  final HandlerCache handlerCache,
                                  final Configuration config,
                                  final ExecutionContextProvider ecProvider)
    {
        super(analyzer,
              subjectCache,
              handlerCache,
              config,
              ecProvider);
    }

    @Override
    public F.Promise execute(final Http.Context ctx) throws Throwable
    {
        final ExecutionContext executionContext = executionContextProvider.get();
        F.Promise promise = F.Promise.promise(() -> getDeferredAction(ctx),
                                                      executionContext)
                        .flatMap(deferredAction -> {
                            final F.Promise result;
                            if (deferredAction == null)
                            {
                                result = delegate.call(ctx);
                            }
                            else
                            {
                                LOGGER.debug("Executing deferred action [{}]",
                                             deferredAction.getClass().getName());
                                result = deferredAction.call(ctx);
                            }
                            return result;
                        }, executionContext);
        if (blocking)
        {
            promise = F.Promise.pure(promise.get(blockingTimeout,
                                                 TimeUnit.MILLISECONDS));
        }
        return promise;
    }
}