curly.artifact.ArtifactServiceImpl.java Source code

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Here is the source code for curly.artifact.ArtifactServiceImpl.java

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/*
 *        Copyright 2015 the original author or authors.
 *
 *    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 curly.artifact;

import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.netflix.hystrix.contrib.javanica.command.ObservableResult;
import curly.commons.github.OctoUser;
import curly.commons.logging.annotation.Loggable;
import curly.commons.security.negotiation.ResourceOperationsResolverAdapter;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.PageImpl;
import org.springframework.data.domain.Pageable;
import org.springframework.data.rest.webmvc.ResourceNotFoundException;
import org.springframework.retry.annotation.Retryable;
import org.springframework.scheduling.annotation.Async;
import org.springframework.stereotype.Service;
import org.springframework.util.Assert;
import rx.Observable;

import java.util.Collections;
import java.util.Optional;

/**
 * @author Joo Pedro Evangelista
 */
@Slf4j
@Service
public class ArtifactServiceImpl extends ResourceOperationsResolverAdapter<Artifact, OctoUser>
        implements ArtifactService {

    private final ArtifactRepository repository;

    @Autowired
    public ArtifactServiceImpl(ArtifactRepository artifactRepository) {
        this.repository = artifactRepository;
    }

    @Loggable
    @Override
    @HystrixCommand(fallbackMethod = "defaultFindAll")
    public Observable<Optional<Page<Artifact>>> findAll(Pageable pageable) {
        log.trace("Finding for page {}", pageable.getPageNumber());
        return new ObservableResult<Optional<Page<Artifact>>>() {
            @Override
            public Optional<Page<Artifact>> invoke() {
                return Optional.ofNullable(repository.findAll(pageable));
            }
        };
    }

    @Loggable
    @Override
    @Retryable
    public Observable<Optional<Artifact>> save(Artifact artifact, OctoUser octoUser) {
        log.trace("Saving entity {} ...", artifact);
        return new ObservableResult<Optional<Artifact>>() {
            @Override
            public Optional<Artifact> invoke() {
                onSave(artifact, octoUser);
                return Optional.ofNullable(repository.save(artifact));
            }
        };
    }

    @Loggable
    @Override
    @HystrixCommand(fallbackMethod = "defaultFindOne")
    public Observable<Optional<Artifact>> findOne(String id) {
        log.trace("Finding for {}", id);
        return new ObservableResult<Optional<Artifact>>() {
            @Override
            public Optional<Artifact> invoke() {
                return Optional.ofNullable(repository.findOne(id));
            }
        };
    }

    @Async
    @Override
    @Loggable
    @Retryable
    @HystrixCommand
    public void delete(String id, OctoUser user) {
        Assert.notNull(user, "OctoUser must be not null");
        Assert.hasText(id, "Id must be not empty");
        log.trace("Looking for entity with id {}", id);
        findOne(id).filter(artifact -> isOwnedBy(artifact.orElseThrow(ResourceNotFoundException::new), user))
                .doOnNext(artifact -> repository.delete(artifact.get())).doOnError(throwable -> log
                        .error("Cannot process #delete({},{}) nested exception is, {}", id, user.getId()));
    }

    @Loggable
    @SuppressWarnings("unused")
    @HystrixCommand
    private Optional<Page<Artifact>> defaultFindAll(Pageable pageable) {
        log.trace("Falling back with empty collection");
        return Optional.of(new PageImpl<>(Collections.emptyList()));
    }

    @Loggable
    @SuppressWarnings("unused")
    @HystrixCommand
    private Optional<Artifact> defaultFindOne(String id) {
        log.trace("Falling back with {}", id);
        return Optional.of(new Artifact(id));
    }
}