spring BuildpackMetadata 源码

springboot BuildpackMetadata 代码

文件路径：/spring-boot-project/spring-boot-tools/spring-boot-buildpack-platform/src/main/java/org/springframework/boot/buildpack/platform/build/BuildpackMetadata.java

/*
 * Copyright 2012-2021 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
 *
 *      https://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 org.springframework.boot.buildpack.platform.build;

import java.io.IOException;
import java.lang.invoke.MethodHandles;

import com.fasterxml.jackson.databind.JsonNode;

import org.springframework.boot.buildpack.platform.docker.type.Image;
import org.springframework.boot.buildpack.platform.docker.type.ImageConfig;
import org.springframework.boot.buildpack.platform.json.MappedObject;
import org.springframework.boot.buildpack.platform.json.SharedObjectMapper;
import org.springframework.util.Assert;
import org.springframework.util.StringUtils;

/**
 * Buildpack metadata information.
 *
 * @author Scott Frederick
 */
final class BuildpackMetadata extends MappedObject {

	private static final String LABEL_NAME = "io.buildpacks.buildpackage.metadata";

	private final String id;

	private final String version;

	private final String homepage;

	private BuildpackMetadata(JsonNode node) {
		super(node, MethodHandles.lookup());
		this.id = valueAt("/id", String.class);
		this.version = valueAt("/version", String.class);
		this.homepage = valueAt("/homepage", String.class);
	}

	/**
	 * Return the buildpack ID.
	 * @return the ID
	 */
	String getId() {
		return this.id;
	}

	/**
	 * Return the buildpack version.
	 * @return the version
	 */
	String getVersion() {
		return this.version;
	}

	/**
	 * Return the buildpack homepage address.
	 * @return the homepage
	 */
	String getHomepage() {
		return this.homepage;
	}

	/**
	 * Factory method to extract {@link BuildpackMetadata} from an image.
	 * @param image the source image
	 * @return the builder metadata
	 * @throws IOException on IO error
	 */
	static BuildpackMetadata fromImage(Image image) throws IOException {
		Assert.notNull(image, "Image must not be null");
		return fromImageConfig(image.getConfig());
	}

	/**
	 * Factory method to extract {@link BuildpackMetadata} from image config.
	 * @param imageConfig the source image config
	 * @return the builder metadata
	 * @throws IOException on IO error
	 */
	static BuildpackMetadata fromImageConfig(ImageConfig imageConfig) throws IOException {
		Assert.notNull(imageConfig, "ImageConfig must not be null");
		String json = imageConfig.getLabels().get(LABEL_NAME);
		Assert.notNull(json, () -> "No '" + LABEL_NAME + "' label found in image config labels '"
				+ StringUtils.collectionToCommaDelimitedString(imageConfig.getLabels().keySet()) + "'");
		return fromJson(json);
	}

	/**
	 * Factory method create {@link BuildpackMetadata} from JSON.
	 * @param json the source JSON
	 * @return the builder metadata
	 * @throws IOException on IO error
	 */
	static BuildpackMetadata fromJson(String json) throws IOException {
		return fromJson(SharedObjectMapper.get().readTree(json));
	}

	/**
	 * Factory method create {@link BuildpackMetadata} from JSON.
	 * @param node the source JSON
	 * @return the builder metadata
	 */
	static BuildpackMetadata fromJson(JsonNode node) {
		return new BuildpackMetadata(node);
	}

}

相关信息

spring 源码目录

相关文章

spring AbstractBuildLog 源码

spring ApiVersion 源码

spring ApiVersions 源码

spring BuildLog 源码

spring BuildOwner 源码

spring BuildRequest 源码

spring Builder 源码

spring BuilderBuildpack 源码

spring BuilderException 源码

spring BuilderMetadata 源码