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.../main/java/org/springframework/boot/buildpack/platform/build/BuildpackLayersMetadata.java
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| /* | ||
| * Copyright 2012-2022 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. | ||
| */ | ||
|
|
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| package org.springframework.boot.buildpack.platform.build; | ||
|
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| import java.io.IOException; | ||
| import java.lang.invoke.MethodHandles; | ||
| import java.util.HashMap; | ||
| import java.util.Map; | ||
|
|
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| import com.fasterxml.jackson.databind.JsonNode; | ||
|
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| 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; | ||
|
|
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| /** | ||
| * Buildpack layers metadata information. | ||
| * | ||
| * @author Scott Frederick | ||
| */ | ||
| final class BuildpackLayersMetadata extends MappedObject { | ||
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| private static final String LABEL_NAME = "io.buildpacks.buildpack.layers"; | ||
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| private final Buildpacks buildpacks; | ||
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| private BuildpackLayersMetadata(JsonNode node) { | ||
| super(node, MethodHandles.lookup()); | ||
| this.buildpacks = Buildpacks.fromJson(getNode()); | ||
| } | ||
|
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| /** | ||
| * Return the metadata details of a buildpack with the given ID and version. | ||
| * @param id the buildpack ID | ||
| * @param version the buildpack version | ||
| * @return the buildpack details or {@code null} if a buildpack with the given ID and | ||
| * version does not exist in the metadata | ||
| */ | ||
| BuildpackLayerDetails getBuildpack(String id, String version) { | ||
| return this.buildpacks.getBuildpack(id, version); | ||
| } | ||
|
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| /** | ||
| * Create a {@link BuildpackLayersMetadata} from an image. | ||
| * @param image the source image | ||
| * @return the buildpack layers metadata | ||
| * @throws IOException on IO error | ||
| */ | ||
| static BuildpackLayersMetadata fromImage(Image image) throws IOException { | ||
| Assert.notNull(image, "Image must not be null"); | ||
| return fromImageConfig(image.getConfig()); | ||
| } | ||
|
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| /** | ||
| * Create a {@link BuildpackLayersMetadata} from image config. | ||
| * @param imageConfig the source image config | ||
| * @return the buildpack layers metadata | ||
| * @throws IOException on IO error | ||
| */ | ||
| static BuildpackLayersMetadata 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); | ||
| } | ||
|
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| /** | ||
| * Create a {@link BuildpackLayersMetadata} from JSON. | ||
| * @param json the source JSON | ||
| * @return the buildpack layers metadata | ||
| * @throws IOException on IO error | ||
| */ | ||
| static BuildpackLayersMetadata fromJson(String json) throws IOException { | ||
| return fromJson(SharedObjectMapper.get().readTree(json)); | ||
| } | ||
|
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| /** | ||
| * Create a {@link BuildpackLayersMetadata} from JSON. | ||
| * @param node the source JSON | ||
| * @return the buildpack layers metadata | ||
| */ | ||
| static BuildpackLayersMetadata fromJson(JsonNode node) { | ||
| return new BuildpackLayersMetadata(node); | ||
| } | ||
|
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| private static class Buildpacks { | ||
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| private final Map<String, BuildpackVersions> buildpacks = new HashMap<>(); | ||
|
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| private BuildpackLayerDetails getBuildpack(String id, String version) { | ||
| if (this.buildpacks.containsKey(id)) { | ||
| return this.buildpacks.get(id).getBuildpack(version); | ||
| } | ||
| return null; | ||
| } | ||
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| private void addBuildpackVersions(String id, BuildpackVersions versions) { | ||
| this.buildpacks.put(id, versions); | ||
| } | ||
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| private static Buildpacks fromJson(JsonNode node) { | ||
| Buildpacks buildpacks = new Buildpacks(); | ||
| node.fields().forEachRemaining((field) -> buildpacks.addBuildpackVersions(field.getKey(), | ||
| BuildpackVersions.fromJson(field.getValue()))); | ||
| return buildpacks; | ||
| } | ||
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| } | ||
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| private static class BuildpackVersions { | ||
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| private final Map<String, BuildpackLayerDetails> versions = new HashMap<>(); | ||
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| private BuildpackLayerDetails getBuildpack(String version) { | ||
| return this.versions.get(version); | ||
| } | ||
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| private void addBuildpackVersion(String version, BuildpackLayerDetails details) { | ||
| this.versions.put(version, details); | ||
| } | ||
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| private static BuildpackVersions fromJson(JsonNode node) { | ||
| BuildpackVersions versions = new BuildpackVersions(); | ||
| node.fields().forEachRemaining((field) -> versions.addBuildpackVersion(field.getKey(), | ||
| BuildpackLayerDetails.fromJson(field.getValue()))); | ||
| return versions; | ||
| } | ||
|
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| } | ||
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| static final class BuildpackLayerDetails extends MappedObject { | ||
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| private final String name; | ||
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| private final String homepage; | ||
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| private final String layerDiffId; | ||
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| private BuildpackLayerDetails(JsonNode node) { | ||
| super(node, MethodHandles.lookup()); | ||
| this.name = valueAt("/name", String.class); | ||
| this.homepage = valueAt("/homepage", String.class); | ||
| this.layerDiffId = valueAt("/layerDiffID", String.class); | ||
| } | ||
|
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| /** | ||
| * Return the buildpack name. | ||
| * @return the name | ||
| */ | ||
| String getName() { | ||
| return this.name; | ||
| } | ||
|
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| /** | ||
| * Return the buildpack homepage address. | ||
| * @return the homepage address | ||
| */ | ||
| String getHomepage() { | ||
| return this.homepage; | ||
| } | ||
|
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| /** | ||
| * Return the buildpack layer {@code diffID}. | ||
| * @return the layer {@code diffID} | ||
| */ | ||
| String getLayerDiffId() { | ||
| return this.layerDiffId; | ||
| } | ||
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| private static BuildpackLayerDetails fromJson(JsonNode node) { | ||
| return new BuildpackLayerDetails(node); | ||
| } | ||
|
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| } | ||
|
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| } |
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