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Use latest Java toolchain and simplify Javadoc generation now that the javadoc tool can properly link to older docs #13

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Use latest Java toolchain and simplify Javadoc generation now that the javadoc tool can properly link to older docs #13

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4 changes: 2 additions & 2 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -48,7 +48,7 @@ The plugin adds an extension named `applications` to the project, which is a con
// build.gradle

plugins {
id "com.ms.gradle.application" version "2.0.2"
id "com.ms.gradle.application" version "2.0.3"
}

applications.main {
Expand All @@ -64,7 +64,7 @@ For more complex examples, see the [build file of the plugin's functional test](
// build.gradle.kts

plugins {
id("com.ms.gradle.application").version("2.0.2")
id("com.ms.gradle.application").version("2.0.3")
}

applications.main {
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74 changes: 7 additions & 67 deletions build.gradle.kts
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Expand Up @@ -13,8 +13,6 @@ import org.eclipse.jgit.errors.RepositoryNotFoundException
import org.eclipse.jgit.lib.Constants
import org.eclipse.jgit.lib.RepositoryBuilder
import java.io.Serializable
import java.net.HttpURLConnection
import java.net.URI
import java.nio.channels.FileChannel
import java.nio.file.Files
import java.nio.file.StandardOpenOption
Expand Down Expand Up @@ -45,7 +43,7 @@ plugins {
}

group = "com.ms.gradle"
version = "2.0.2"
version = "2.0.3"

val pluginId = "com.ms.gradle.application"
val pluginClass = "com.ms.gradle.application.ApplicationPlugin"
Expand All @@ -65,7 +63,7 @@ val productUrl = "https://github.com/morganstanley/gradle-plugin-application"
val supportedJavaVersions = sortedSetOf(
JavaVersion.VERSION_1_8, JavaVersion.VERSION_11, JavaVersion.VERSION_17, JavaVersion.VERSION_21)
val sourceJavaVersion = supportedJavaVersions.minOf { it }
val toolsJavaVersion = JavaVersion.VERSION_11
val toolsJavaVersion = supportedJavaVersions.maxOf { it }

fun toolchainSpec(javaVersion: JavaVersion) = { toolchain: JavaToolchainSpec ->
toolchain.vendor.set(JvmVendorSpec.AZUL)
Expand Down Expand Up @@ -148,71 +146,13 @@ tasks.javadoc {
memberLevel = JavadocMemberLevel.PUBLIC
// See: https://github.com/gradle/gradle/issues/18274
addStringOption("-release", sourceJavaVersion.majorVersion)
links("https://docs.gradle.org/${GradleVersion.current().baseVersion.version}/javadoc/")
}

// Javadoc in Java 9+ requires this `linkoffline` workaround to be able to link to Java 8 docs
// In case of a package overlap (e.g. `javax.annotation`), the last offline link takes precedence
// To have control over the situation, we have to use offline links for every dependency
doFirst {
val linksDir = temporaryDir.resolve("links")
delete(linksDir.toPath())
Files.createDirectories(linksDir.toPath())

data class OfflineLink(val dir: File, val uri: URI)
val descriptorFileNames = listOf("element-list", "package-list")

// For built-in dependencies, download Javadoc descriptors manually from the URI
val linksForBuiltIns = listOf(
OfflineLink(linksDir.resolve("java"),
uri("https://docs.oracle.com/javase/${sourceJavaVersion.majorVersion}/docs/api/")),
OfflineLink(linksDir.resolve("gradle"),
uri("https://docs.gradle.org/${GradleVersion.current().baseVersion.version}/javadoc/")),
).onEach { offlineLink ->
val javadocDescriptor = descriptorFileNames.mapNotNull { fileName ->
with(offlineLink.uri.resolve(fileName).toURL().openConnection() as HttpURLConnection) {
instanceFollowRedirects = false
inputStream.use { content ->
responseCode.takeIf { it == 200 }?.let {
Files.createDirectories(offlineLink.dir.toPath())
offlineLink.dir.resolve(fileName).apply {
Files.copy(content, toPath())
}
}
}
}
}.firstOrNull()
checkNotNull(javadocDescriptor) { "Could not download Javadoc descriptor from ${offlineLink.uri}" }
}

// For external modules, extract Javadoc descriptors from the module's Javadoc JAR
val linksForModules = run {
val compileComponents = configurations.compileClasspath.get().incoming.resolutionResult.allComponents
val compileJavadocs = dependencies.createArtifactResolutionQuery()
.forComponents(compileComponents.map { it.id })
.withArtifacts(JvmLibrary::class, JavadocArtifact::class)
.execute()
compileJavadocs.resolvedComponents.mapNotNull { component ->
val javadocArtifact =
component.getArtifacts(JavadocArtifact::class).singleOrNull() as ResolvedArtifactResult?
val javadocDescriptor = javadocArtifact?.let { artifact ->
val javadocJarTree = zipTree(artifact.file)
descriptorFileNames.firstNotNullOfOrNull { fileName ->
javadocJarTree.matching { include(fileName) }.singleOrNull()
}
}
javadocDescriptor?.let { file ->
val id = component.id as ModuleComponentIdentifier
OfflineLink(file.parentFile, uri("https://javadoc.io/doc/${id.group}/${id.module}/${id.version}/"))
}
}
}

// Add offline links
linksForBuiltIns.plus(linksForModules).forEach { offlineLink ->
fullOptions.linksOffline(offlineLink.uri.toString(), offlineLink.dir.path)
}
// Generate correct deep links to Java 8 and Gradle methods (HTML5: `#toString()`, HTML4: `#toString--`)
fullOptions.addBooleanOption("html4", true)
// `compileClasspath` is already an input via `Javadoc.classpath` (see `JvmPluginsHelper.configureJavaDocTask`)
configurations.compileClasspath.get().incoming.resolutionResult.allComponents
.mapNotNull { it.id as? ModuleComponentIdentifier }
.forEach { fullOptions.links("https://javadoc.io/doc/${it.group}/${it.module}/${it.version}/") }
}
}

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