com.b2international.snowowl.datastore.server.internal.merge.MergeServiceImpl.java Source code

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Here is the source code for com.b2international.snowowl.datastore.server.internal.merge.MergeServiceImpl.java

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/*
 * Copyright 2011-2016 B2i Healthcare Pte Ltd, http://b2i.sg
 * 
 * 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 com.b2international.snowowl.datastore.server.internal.merge;

import java.util.List;
import java.util.UUID;

import com.b2international.snowowl.core.Repository;
import com.b2international.snowowl.core.exceptions.NotFoundException;
import com.b2international.snowowl.core.merge.Merge;
import com.b2international.snowowl.core.merge.MergeCollection;
import com.b2international.snowowl.core.merge.MergeService;
import com.google.common.base.Function;
import com.google.common.base.Predicate;
import com.google.common.cache.Cache;
import com.google.common.cache.CacheBuilder;
import com.google.common.collect.FluentIterable;

/**
 * @since 4.6
 */
public class MergeServiceImpl implements MergeService {

    private final Repository repository;
    private final Cache<UUID, AbstractBranchChangeRemoteJob> merges;

    public MergeServiceImpl(Repository repository, int mergeMaxResults) {
        this.repository = repository;
        this.merges = CacheBuilder.newBuilder().maximumSize(mergeMaxResults).build();
    }

    @Override
    public Merge enqueue(UUID id, String source, String target, String userId, String commitMessage,
            String reviewId, String parentLockContext) {
        AbstractBranchChangeRemoteJob job = AbstractBranchChangeRemoteJob.create(repository, id, source, target,
                userId, commitMessage, reviewId, parentLockContext);
        merges.put(id, job);
        job.schedule();
        return job.getMerge();
    }

    @Override
    public Merge getMerge(UUID id) {
        AbstractBranchChangeRemoteJob job = merges.getIfPresent(id);

        if (job != null) {
            return job.getMerge();
        } else {
            throw new NotFoundException("Merge queue entry", id.toString());
        }
    }

    @Override
    public MergeCollection search(Predicate<Merge> query) {
        List<Merge> results = FluentIterable.from(merges.asMap().values())
                .transform(new Function<AbstractBranchChangeRemoteJob, Merge>() {
                    @Override
                    public Merge apply(AbstractBranchChangeRemoteJob input) {
                        return input.getMerge();
                    }
                }).filter(query).toList();

        return new MergeCollection(results);
    }

    @Override
    public void deleteMerge(UUID id) {
        AbstractBranchChangeRemoteJob job = merges.asMap().remove(id);

        if (job != null) {
            job.cancel();
        } else {
            throw new NotFoundException("Merge queue entry", id.toString());
        }
    }
}