com.spotify.docker.DockerBuildInformation.java Source code

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Here is the source code for com.spotify.docker.DockerBuildInformation.java

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/*
 * Copyright (c) 2014 Spotify AB.
 *
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.spotify.docker;

import com.google.common.base.Throwables;

import com.fasterxml.jackson.annotation.JsonProperty;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;

import org.apache.maven.plugin.logging.Log;
import org.eclipse.jgit.lib.ObjectId;
import org.eclipse.jgit.lib.Repository;

import java.io.IOException;

import static com.fasterxml.jackson.annotation.JsonInclude.Include.NON_NULL;
import static com.fasterxml.jackson.databind.MapperFeature.SORT_PROPERTIES_ALPHABETICALLY;
import static com.fasterxml.jackson.databind.SerializationFeature.ORDER_MAP_ENTRIES_BY_KEYS;
import static com.google.common.base.Strings.isNullOrEmpty;

//* Might be overkill to do it this way, but should simplify things when if/when we add more to this
public class DockerBuildInformation {
    private static final ObjectMapper OBJECT_MAPPER = new ObjectMapper()
            .configure(SORT_PROPERTIES_ALPHABETICALLY, true).configure(ORDER_MAP_ENTRIES_BY_KEYS, true)
            .setSerializationInclusion(NON_NULL);

    @JsonProperty("image")
    private final String image;

    @JsonProperty("repo")
    private String repo;

    @JsonProperty("commit")
    private String commit;

    @JsonProperty("digest")
    private String digest;

    public DockerBuildInformation(final String image, final Log log) {
        this.image = image;
        updateGitInformation(log);
    }

    public DockerBuildInformation setDigest(final String digest) {
        this.digest = digest;
        return this;
    }

    private void updateGitInformation(Log log) {
        try {
            final Repository repo = new Git().getRepo();
            if (repo != null) {
                this.repo = repo.getConfig().getString("remote", "origin", "url");
                final ObjectId head = repo.resolve("HEAD");
                if (head != null && !isNullOrEmpty(head.getName())) {
                    this.commit = head.getName();
                }
            }
        } catch (IOException e) {
            log.error("Failed to read Git information", e);
        }
    }

    public byte[] toJsonBytes() {
        try {
            return OBJECT_MAPPER.writeValueAsBytes(this);
        } catch (JsonProcessingException e) {
            throw Throwables.propagate(e);
        }
    }

    public String getImage() {
        return image;
    }

    public String getRepo() {
        return repo;
    }

    public String getCommit() {
        return commit;
    }

    public String getDigest() {
        return digest;
    }
}