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Add toolchain detection for Nix package manager
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143 changes: 143 additions & 0 deletions
143
...jvm-services/src/main/java/org/gradle/jvm/toolchain/internal/NixInstallationSupplier.java
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| /* | ||
| * Copyright 2020 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. | ||
| */ | ||
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| package org.gradle.jvm.toolchain.internal; | ||
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| import com.google.common.annotations.VisibleForTesting; | ||
| import org.gradle.api.logging.Logger; | ||
| import org.gradle.api.logging.Logging; | ||
| import org.gradle.api.provider.Provider; | ||
| import org.gradle.api.provider.ProviderFactory; | ||
| import org.gradle.internal.os.OperatingSystem; | ||
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| import java.io.File; | ||
| import java.io.FileFilter; | ||
| import java.util.Arrays; | ||
| import java.util.Collections; | ||
| import java.util.HashSet; | ||
| import java.util.Optional; | ||
| import java.util.Set; | ||
| import java.util.function.Predicate; | ||
| import java.util.regex.Pattern; | ||
| import java.util.stream.Collectors; | ||
| import javax.inject.Inject; | ||
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| public class NixInstallationSupplier implements InstallationSupplier { | ||
| private static final Logger LOGGER = Logging.getLogger(NixInstallationSupplier.class); | ||
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| private static final String STORE_PATH_PROPERTY_NAME = "org.gradle.java.installations.nix.store"; | ||
| private static final String STORE_PATH_DEFAULT = "/nix/store"; | ||
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| // Paths will be of the form "{hash}-{suffix}", for example: | ||
| // | ||
| // /nix/store/6375rn8kiq9pn4pgdkdiqgvg8b0gdycy-openjdk-19.0.2+7 | ||
| // | ||
| // We know the the length of Nix store hashes (32), | ||
| // and the length of a hyphen (1), and only look at the suffix. | ||
| private static final int PREFIX_LENGTH = 33; | ||
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| private static final Predicate<String> PATTERN = Pattern.compile("jdk", Pattern.CASE_INSENSITIVE).asPredicate(); | ||
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| private static final FileFilter FILTER = (final File file) -> { | ||
| final String name = file.getName(); | ||
| if (name.length() < PREFIX_LENGTH) { | ||
| return false; | ||
| } | ||
| return PATTERN.test(name.substring(PREFIX_LENGTH)); | ||
| }; | ||
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| @VisibleForTesting | ||
| final File store; | ||
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| @Inject | ||
| public NixInstallationSupplier(ProviderFactory providerFactory) { | ||
| final OperatingSystem os = OperatingSystem.current(); | ||
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| // As of 2024-05, Nix is only officially supported on Linux and MacOS. | ||
| if (!os.isLinux() && !os.isMacOsX()) { | ||
| LOGGER.trace("Operating system not supported."); | ||
| store = null; | ||
| return; | ||
| } | ||
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| File store = null; | ||
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| final Provider<String> storeProvider = providerFactory.gradleProperty(STORE_PATH_PROPERTY_NAME); | ||
| if (storeProvider.isPresent()) { | ||
| try { | ||
| store = new File(storeProvider.get()); | ||
| if (!store.exists()) { | ||
| store = null; | ||
| LOGGER.warn("Initialization for store path '{}' failed. Path does not exist. Falling back to default '{}'.", store, STORE_PATH_DEFAULT); | ||
| } | ||
| } catch (Exception e) { | ||
| store = null; | ||
| final String message = "Initialization for store path '{}' failed. Falling back to default '{}'."; | ||
| if (LOGGER.isDebugEnabled()) { | ||
| LOGGER.debug(message, store, STORE_PATH_DEFAULT, e); | ||
| } else { | ||
| LOGGER.warn(message, store, STORE_PATH_DEFAULT); | ||
| } | ||
| } | ||
| if (store != null) { | ||
| this.store = store; | ||
| return; | ||
| } | ||
| } | ||
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| try { | ||
| store = new File(STORE_PATH_DEFAULT); | ||
| if (!store.exists()) { | ||
| store = null; | ||
| LOGGER.debug("Initialization for default store path '{}' failed. Path does not exist.", STORE_PATH_DEFAULT); | ||
| } | ||
| } catch (Exception e) { | ||
| LOGGER.debug("Initialization for default store path '{}' failed.", STORE_PATH_DEFAULT, e); | ||
| } | ||
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| this.store = store; | ||
| } | ||
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| @Override | ||
| public Set<InstallationLocation> get() { | ||
| if (store == null) { | ||
| LOGGER.trace("Nothing to do since `store` is `null`."); | ||
| return Collections.emptySet(); | ||
| } | ||
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| final File[] list = store.listFiles(FILTER); | ||
| if (list == null) { | ||
| LOGGER.debug("Listing files within store path '{}' failed."); | ||
| return Collections.emptySet(); | ||
| } | ||
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| final HashSet<InstallationLocation> locations = new HashSet<InstallationLocation>(list.length); | ||
| for (final File file : list) { | ||
| locations.add(InstallationLocation.autoDetected(file, getSourceName())); | ||
| } | ||
| return locations; | ||
| } | ||
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| @Override | ||
| public String getSourceName() { | ||
| return "Nix"; | ||
| } | ||
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| @VisibleForTesting | ||
| NixInstallationSupplier(File store) { | ||
| this.store = store; | ||
| } | ||
| } |
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