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ammonite.interp.script.AmmoniteBuildServer.scala Maven / Gradle / Ivy
package ammonite.interp.script
import java.io.{InputStream, OutputStream, PrintStream, PrintWriter}
import java.net.URI
import java.nio.file.{FileSystemNotFoundException, Path, Paths}
import java.util.concurrent.atomic.AtomicInteger
import java.util.concurrent.{CompletableFuture, Executors, ThreadFactory}
import java.util.UUID
import ammonite.compiler.iface.{CodeWrapper, CompilerBuilder, Parser}
import ammonite.interp.api.InterpAPI
import ammonite.interp.DependencyLoader
import ammonite.runtime.{ImportHook, Storage}
import ammonite.util.{Classpath, Imports, Position, PositionOffsetConversion, Printer}
import ch.epfl.scala.bsp4j.{Diagnostic => BDiagnostic, Position => BPosition, _}
import coursierapi.{Dependency, Repository}
import org.eclipse.lsp4j.jsonrpc.Launcher
import scala.collection.JavaConverters._
import scala.concurrent.{ExecutionContext, Future, Promise}
import scala.util.{Failure, Success}
import scala.util.control.NonFatal
class AmmoniteBuildServer(
compilerBuilder: CompilerBuilder,
parser: Parser,
codeWrapper: CodeWrapper,
initialScripts: Seq[os.Path] = Nil,
initialImports: Imports = AmmoniteBuildServer.defaultImports,
defaultRepositories: Seq[Repository] = Repository.defaults().asScala.toList,
importHooks: Map[Seq[String], ImportHook] = ImportHook.defaults
) extends BuildServer with ScalaBuildServer with DummyBuildServerImplems {
import AmmoniteBuildServer._
private val storage = Storage.InMemory()
private val printer = {
val printStream = new PrintStream(System.out)
Printer(
printStream, new PrintStream(System.err), printStream,
println, println, println
)
}
private val dependencyLoader = new DependencyLoader(
printer,
storage,
alreadyLoadedDependencies(),
verboseOutput = false
)
private val initialClassLoader =
if (isolatedApi)
classOf[InterpAPI].getClassLoader
else
Thread.currentThread().getContextClassLoader
private def initialClassPath =
Classpath.classpath(initialClassLoader, storage.dirOpt.map(_.toNIO)).map(_.toURI)
private lazy val proc =
withRoot { root =>
ScriptProcessor(
compilerBuilder.scalaVersion,
parser,
codeWrapper,
dependencyLoader,
defaultRepositories,
Seq(
Dependency.of(
"org.scalameta",
"semanticdb-scalac_" + scala.util.Properties.versionNumberString,
ammonite.interp.script.Constants.semanticDbVersion
)
),
root,
importHooks
)
}
private lazy val compiler =
withRoot { root =>
new ScriptCompiler(
compilerBuilder,
storage,
printer,
codeWrapper,
initialClassLoader,
initialImports,
classPathWhitelist(),
Some(root),
Some(
root /
".ammonite" /
s"scala-${scala.util.Properties.versionNumberString}" /
s"amm-${ammonite.Constants.version}"
),
generateSemanticDbs = true,
inMemoryCache = true
)
}
private var rootUriOpt = Option.empty[String]
private var rootOpt = Option.empty[os.Path]
private def withRoot[T](f: os.Path => T): T =
rootOpt match {
case None => throw new Exception("Uninitialized AmmoniteBuildServer")
case Some(root) => f(root)
}
private var supportsScala = false
private var clientOpt = Option.empty[BuildClient]
private val defaultEc = ExecutionContext.fromExecutorService(
Executors.newFixedThreadPool(1, threadFactory("ammonite-bsp"))
)
private val resolutionEc = ExecutionContext.fromExecutorService(
Executors.newFixedThreadPool(1, threadFactory("ammonite-bsp-resolution"))
)
private val compileEc = ExecutionContext.fromExecutorService(
Executors.newFixedThreadPool(1, threadFactory("ammonite-bsp-compile"))
)
override def onConnectWithClient(client: BuildClient): Unit = {
clientOpt = Some(client)
}
def buildInitialize(params: InitializeBuildParams): CompletableFuture[InitializeBuildResult] =
nonBlocking {
if (rootUriOpt.nonEmpty || rootOpt.nonEmpty)
() // TODO Warn…
rootUriOpt = Some(params.getRootUri)
rootOpt = rootUriOpt.flatMap { uri =>
val uri0 = new URI(uri)
try Some(os.Path(Paths.get(uri0)))
catch {
case _: IllegalArgumentException | _: FileSystemNotFoundException =>
None
}
}
// TODO Validate BSP version
supportsScala = params.getCapabilities.getLanguageIds.asScala.exists(_ == "scala")
val capabilities = new BuildServerCapabilities()
capabilities.setCompileProvider(new CompileProvider(List("scala").asJava))
capabilities.setDependencySourcesProvider(true)
capabilities.setInverseSourcesProvider(true)
capabilities.setResourcesProvider(true)
capabilities.setBuildTargetChangedProvider(true)
// capabilities.setRunProvider(new RunProvider(List("scala").asJava)) // TODO
new InitializeBuildResult(
"Ammonite",
ammonite.Constants.version,
ammonite.Constants.bspVersion,
capabilities
)
}
private lazy val moduleCache = new ScriptCache(
proc,
events =>
for (client <- clientOpt) {
val params = new DidChangeBuildTarget(events.asJava)
client.onBuildTargetDidChange(params)
}
)
private def scriptBuildTarget(script: Script, path: os.Path): BuildTarget = {
val scalaTarget = new ScalaBuildTarget(
"org.scala-lang",
compiler.scalaVersion,
compiler.scalaVersion.split('.').take(2).mkString("."),
ScalaPlatform.JVM,
// TODO This seems not to matter as long as the scala-compiler JARs and all
// are in the classpath we pass via ScalacOptions.
List.empty[String].asJava
)
val directDeps = script.dependencies.scriptDependencies.flatMap(_.codeSource.path.toSeq)
val target = new BuildTarget(
buildTargetIdentifier(path),
List.empty[String].asJava,
List("scala").asJava,
directDeps.map(buildTargetIdentifier).asJava,
new BuildTargetCapabilities(true, false, false)
)
target.setBaseDirectory(path.toNIO.toAbsolutePath.getParent.toUri.toASCIIString)
target.setDisplayName(path.last)
target.setDataKind("scala")
target.setData(scalaTarget)
target
}
def workspaceBuildTargets(): CompletableFuture[WorkspaceBuildTargetsResult] =
on(defaultEc) {
moduleCache.load(initialScripts)
val buildTargets = for {
script <- moduleCache.list
path <- script.codeSource.path.toSeq
_ = {
// Write generated scala code before we compile things,
// so that clients can index things straightaway
try compiler.preCompile(script)
catch {
case NonFatal(e) =>
System.err.println(s"Caught $e")
// FIXME Log this
}
}
} yield scriptBuildTarget(script, path)
new WorkspaceBuildTargetsResult(buildTargets.asJava)
}
def buildTargetSources(params: SourcesParams): CompletableFuture[SourcesResult] =
nonBlocking {
val sourcesItems = params.getTargets.asScala.toList.flatMap { id =>
moduleCache.get(id.getUri).toSeq.map { _ =>
val source = new SourceItem(id.getUri, SourceItemKind.FILE, false)
new SourcesItem(id, List(source).asJava)
}
}
new SourcesResult(sourcesItems.asJava)
}
private def scriptDependencySources(
script: Script,
target: BuildTargetIdentifier
): DependencySourcesItem = {
val extra = initialClassPath.filter(_.toASCIIString.endsWith("-sources.jar")) // meh
val jars = proc.jarDependencies(script) match {
case Left(err) =>
// TODO Log error, or report via diagnostics? Only fetch non-errored deps?
Nil
case Right(jars0) => jars0.filter(_.last.endsWith("-sources.jar")) // meh
}
new DependencySourcesItem(
target,
(jars.map(_.toNIO.toUri) ++ extra).map(_.toASCIIString).asJava
)
}
def buildTargetDependencySources(
params: DependencySourcesParams
): CompletableFuture[DependencySourcesResult] =
on(resolutionEc) {
val items = for {
target <- params.getTargets.asScala.toList
script <- moduleCache.get(target.getUri).toSeq
} yield scriptDependencySources(script, target)
new DependencySourcesResult(items.asJava)
}
def buildTargetInverseSources(
params: InverseSourcesParams
): CompletableFuture[InverseSourcesResult] =
nonBlocking {
val uri = params.getTextDocument.getUri
val id = new BuildTargetIdentifier(uri)
val targets =
if (moduleCache.get(id.getUri).isEmpty) Nil
else List(id)
new InverseSourcesResult(targets.asJava)
}
private def sendDiagnostics(
client: BuildClient,
mod0: Script,
target: BuildTargetIdentifier,
diagnostics: Seq[Diagnostic]
): Unit = {
def bspDiagnostic(diagnostic: Diagnostic): BDiagnostic = {
val start0 = new BPosition(diagnostic.start.line, diagnostic.start.char)
val end0 = new BPosition(diagnostic.end.line, diagnostic.end.char)
val bspDiagnostic = new BDiagnostic(new Range(start0, end0), diagnostic.message)
bspDiagnostic.setSeverity(
diagnostic.severity match {
case "INFO" => DiagnosticSeverity.INFORMATION
case "WARNING" => DiagnosticSeverity.WARNING
case "ERROR" => DiagnosticSeverity.ERROR
case _ => sys.error(s"Unrecognized severity: ${diagnostic.severity}")
}
)
bspDiagnostic
}
val processorDiagnostics = mod0.processorDiagnostics.map(bspDiagnostic)
val compileDiagnostics = diagnostics.map(bspDiagnostic)
val diagnosticsParams = new PublishDiagnosticsParams(
new TextDocumentIdentifier(
mod0
.codeSource.path
.getOrElse(???)
.toNIO
.toUri
.toASCIIString
),
target,
(processorDiagnostics ++ compileDiagnostics).asJava,
true // ???
)
client.onBuildPublishDiagnostics(diagnosticsParams)
}
private def startCompileTask(path: String, target: BuildTargetIdentifier): TaskId = {
val taskId = new TaskId(UUID.randomUUID().toString)
for (client <- clientOpt) {
val startParams = new TaskStartParams(taskId)
startParams.setEventTime(System.currentTimeMillis())
startParams.setMessage(s"Compiling $path")
startParams.setDataKind(TaskDataKind.COMPILE_TASK)
startParams.setData(new CompileTask(target))
client.onBuildTaskStart(startParams)
}
taskId
}
private def finishCompiling(
taskId: TaskId,
path: String,
target: BuildTargetIdentifier,
success: Boolean,
diagnostics: Iterable[Diagnostic]
): Unit =
for (client <- clientOpt) {
var warningCount = 0
var errorCount = 0
diagnostics.foreach {
case warn if warn.severity == "WARNING" => warningCount += 1
case error if error.severity == "ERROR" => errorCount += 1
case _ =>
}
val finishParams = new TaskFinishParams(
taskId,
if (success) StatusCode.OK else StatusCode.ERROR
)
finishParams.setEventTime(System.currentTimeMillis())
finishParams.setMessage(if (success) s"Compiled $path" else s"Error compiling $path")
finishParams.setDataKind(TaskDataKind.COMPILE_REPORT)
finishParams.setData(new CompileReport(target, errorCount, warningCount))
clientOpt.foreach(_.onBuildTaskFinish(finishParams))
}
private def compileScript(
script: Script,
dependencies: Script.ResolvedDependencies
): ScriptCompileResult = {
def actualDiagnostics(result: ScriptCompileResult) =
result.errorOrOutput match {
case Left(err) if result.diagnostics.isEmpty =>
val end = PositionOffsetConversion.offsetToPos(script.code)(script.code.length)
Seq(Diagnostic("ERROR", Position(0, 0), end, err))
case _ => result.diagnostics
}
val path = script.codeSource.path.getOrElse {
sys.error("Unexpected script with no path")
}
val target = buildTargetIdentifier(path)
val result = compiler
.compileFromCache(script, dependencies)
.getOrElse {
val name = rootOpt.fold(path.toString)(path.relativeTo(_).toString)
val taskId = startCompileTask(name, target)
val result0 = compiler.compile(script, dependencies)
finishCompiling(
taskId,
name,
target,
result0.errorOrOutput.isRight,
actualDiagnostics(result0)
)
result0
}
for (client <- clientOpt)
sendDiagnostics(client, script, target, actualDiagnostics(result))
result
}
private def compileScript(script: Script, target: BuildTargetIdentifier): Boolean = {
val (_, res) = compiler.compile(
script,
proc,
doCompile = compileScript(_, _)
)
script.processorDiagnostics.isEmpty && res.isRight
}
def buildTargetCompile(params: CompileParams): CompletableFuture[CompileResult] =
on(compileEc) {
val successes = for {
target <- params.getTargets.asScala.toList
script <- moduleCache.get(target.getUri).toSeq
} yield compileScript(script, target)
val success = successes.forall(identity)
new CompileResult(if (success) StatusCode.OK else StatusCode.ERROR)
}
private def scriptScalacOptions(
script: Script,
target: BuildTargetIdentifier
): ScalacOptionsItem = {
val extra = initialClassPath.filter(!_.toASCIIString.endsWith("-sources.jar")) // meh
val scriptDependenciesTargets = proc.dependencies(script) match {
case Left(err) =>
// TODO Log error, or report via diagnostics?
Nil
case Right(scriptDeps) =>
scriptDeps
.flatMap(compiler.moduleTarget(_).toSeq)
.map(_.toNIO.toUri.toASCIIString)
}
val jars = proc.jarDependencies(script) match {
case Left(err) =>
// TODO Log error, or report via diagnostics? Only fetch non-errored deps?
Nil
case Right(jars0) =>
jars0
.filter(!_.last.endsWith("-sources.jar")) // meh
.map(_.toNIO.toUri.toASCIIString)
}
val classDirectory = compiler.moduleTarget(script).getOrElse(???)
new ScalacOptionsItem(
target,
compiler.moduleSettings(script).asJava,
(scriptDependenciesTargets ++ jars ++ extra.map(_.toASCIIString)).asJava,
classDirectory.toNIO.toAbsolutePath.toUri.toASCIIString
)
}
def buildTargetScalacOptions(
params: ScalacOptionsParams
): CompletableFuture[ScalacOptionsResult] =
on(resolutionEc) {
val items = for {
target <- params.getTargets.asScala.toList
script <- moduleCache.get(target.getUri).toSeq
} yield scriptScalacOptions(script, target)
new ScalacOptionsResult(items.asJava)
}
def buildTargetCleanCache(params: CleanCacheParams): CompletableFuture[CleanCacheResult] =
on(compileEc) {
compiler.clearCache()
new CleanCacheResult("", true)
}
private val shutdownPromise = Promise[Unit]()
def buildShutdown(): CompletableFuture[Object] =
nonBlocking {
if (!shutdownPromise.isCompleted)
shutdownPromise.success(())
null
}
def initiateShutdown: Future[Unit] = shutdownPromise.future
}
object AmmoniteBuildServer {
def defaultImports: Imports =
ammonite.interp.Interpreter.predefImports
private def buildTargetIdentifier(p: os.Path): BuildTargetIdentifier =
new BuildTargetIdentifier(p.toNIO.toAbsolutePath.toUri.toASCIIString)
private def nonBlocking[T](t: T): CompletableFuture[T] =
CompletableFuture.completedFuture(t)
private def on[T](ec: ExecutionContext)(t: => T): CompletableFuture[T] = {
implicit val ec0 = ec
val cf = new CompletableFuture[T]
val f = Future(t)
f.onComplete {
case Success(t) => cf.complete(t)
case Failure(ex) => cf.completeExceptionally(ex)
}
cf
}
private def threadFactory(name: String): ThreadFactory =
new ThreadFactory {
val threadNumber = new AtomicInteger(1)
override def newThread(r: Runnable): Thread = {
val threadNumber0 = threadNumber.getAndIncrement()
val t = new Thread(r, s"$name-$threadNumber0")
t.setDaemon(true)
t.setPriority(Thread.NORM_PRIORITY)
t
}
}
private lazy val isolatedApi: Boolean = {
val interpLoader = classOf[AmmoniteBuildServer].getClassLoader
val interpApiLoader = classOf[InterpAPI].getClassLoader
interpLoader != interpApiLoader
}
private def alreadyLoadedDependencies(
resourceName: String =
if (isolatedApi) "amm-interp-api-dependencies.txt"
else "amm-dependencies.txt"
): Seq[Dependency] = {
var is: InputStream = null
try {
is = Thread.currentThread().getContextClassLoader.getResourceAsStream(resourceName)
if (is == null)
throw new Exception(s"Resource $resourceName not found")
scala.io.Source.fromInputStream(is)(scala.io.Codec.UTF8)
.mkString
.split('\n')
.filter(_.nonEmpty)
.map(l => l.split(':') match {
case Array(org, name, ver) =>
Dependency.of(org, name, ver)
case other =>
throw new Exception(s"Cannot parse line '$other' from resource $resourceName")
})
} finally {
if (is != null)
is.close()
}
}
def classPathWhitelist(): Set[Seq[String]] =
if (isolatedApi)
Set.empty
else
os.read
.lines(os.resource / "ammonite-api-whitelist.txt")
.map(_.split('/').toSeq)
.toSet
private def naiveJavaFutureToScalaFuture[T](
f: java.util.concurrent.Future[T]
): Future[T] = {
val p = Promise[T]()
val t = new Thread {
setDaemon(true)
setName("ammonite-bsp-wait-for-exit")
override def run(): Unit =
p.complete {
try Success(f.get())
catch { case t: Throwable => Failure(t) }
}
}
t.start()
p.future
}
def start(
server: AmmoniteBuildServer,
input: InputStream = System.in,
output: OutputStream = System.out
): (Launcher[BuildClient], Future[Unit]) = {
val ec = Executors.newFixedThreadPool(4, threadFactory("ammonite-bsp-jsonrpc"))
val launcher = new Launcher.Builder[BuildClient]()
.setExecutorService(ec)
.setInput(input)
.setOutput(output)
.setRemoteInterface(classOf[BuildClient])
.setLocalService(server)
.create()
val client = launcher.getRemoteProxy
server.onConnectWithClient(client)
val f = launcher.startListening()
val scalaEc = ExecutionContext.fromExecutorService(ec)
val futures = Seq(
naiveJavaFutureToScalaFuture(f).map(_ => ())(scalaEc),
server.initiateShutdown
)
val shutdownFuture = Future.firstCompletedOf(futures)(scalaEc)
(launcher, shutdownFuture)
}
}
