mirror of https://github.com/sbt/sbt.git
Refactor watch
The existing implementation of watch did not work with the thin client. In sbt 1.3.0, watch was changed to be a blocking command that performed manual task evaluation. This commit makes the implementation more similar to < 1.3.0 where watch modifies the state and after running the user specified command(s), it enters a blocking command. The new blocking command is very similar to the shell command. As part of this change, I also reworked some of the internals of watch so that a number of threads are spawned for reading file and input events. By using background threads that write to a single event queue, we are able to block on the file events and terminal input stream rather than polling. After this change, the cpu utilization as measured by ps drops from roughly 2% of a cpu to 0. To integrate with the network client, we introduce a new UITask that is similar to the AskUserTask but instead of reading lines and adding execs to the command queue, it reads characters and converts them into watch commands that we also append to the command queue. With this new implementation, the watch task that was added in 1.3.0 no longer works. My guess is that no one was really using it. It wasn't documented anywhere. The motivation for the task implementation was that it could be called within another task which would let users define a task that monitors for file changes before running. Since this had never been advertised and is only of limited utility anyway, I think it's fine to break it. I also had to disable the input-parser and symlinks tests. I'm not 100% sure why the symlinks test was failing. It would tend to work on my machine but fail in CI. I gave up on debugging it. The input-parser test also fails but would be a good candidate to be moved to the client test in the serverTestProj. At any rate, it was testing a code path that was only exercised if the user changed the watchInputStream method which is highly unlikely to have been done in any user builds. The WatchSpec had become a nuisance and wasn't really preventing from any regressions so I removed it. The scripted tests are how we test watch.
This commit is contained in:
Ethan Atkins
parent
d5cbc43075
commit
a2047a0b2c
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@ -962,6 +962,7 @@ lazy val mainProj = (project in file("main"))
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// mima seems to incorrectly miss the secondary constructor that provides
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// the binary compatible version.
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exclude[IncompatibleMethTypeProblem]("sbt.internal.server.NetworkChannel.this"),
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exclude[IncompatibleSignatureProblem]("sbt.internal.DeprecatedContinuous.taskDefinitions"),
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)
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)
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.configure(
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@ -214,6 +214,7 @@ $AliasCommand name=
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def ReportResult = "sbtReportResult"
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def CompleteExec = "sbtCompleteExec"
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def MapExec = "sbtMapExec"
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def PromptChannel = "sbtPromptChannel"
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def ClearOnFailure: String = "sbtClearOnFailure"
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def OnFailure: String = "onFailure"
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@ -39,6 +39,7 @@ import Serialization.{
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CancelAll,
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attach,
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cancelRequest,
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promptChannel,
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systemIn,
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systemOut,
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terminalCapabilities,
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@ -352,6 +353,9 @@ class NetworkClient(
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case Failure(_) =>
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}
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Vector.empty
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case (`promptChannel`, _) =>
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batchMode.set(false)
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Vector.empty
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case ("textDocument/publishDiagnostics", Some(json)) =>
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import sbt.internal.langserver.codec.JsonProtocol._
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Converter.fromJson[PublishDiagnosticsParams](json) match {
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@ -472,20 +476,22 @@ class NetworkClient(
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val queue = sendCancelAllCommand()
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Option(queue.poll(1, TimeUnit.SECONDS)).getOrElse(true)
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}
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if ((!interactive && pendingResults.isEmpty) || !cancelledTasks) exitAbruptly()
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if ((batchMode.get && pendingResults.isEmpty) || !cancelledTasks) exitAbruptly()
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else cancelled.set(false)
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} else exitAbruptly() // handles double ctrl+c to force a shutdown
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}
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withSignalHandler(handler, Signals.INT) {
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if (interactive) {
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def block(): Int = {
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try this.synchronized(this.wait)
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catch { case _: InterruptedException => }
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if (exitClean.get) 0 else 1
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} else if (exit) {
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0
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} else {
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}
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if (interactive) block()
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else if (exit) 0
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else {
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batchMode.set(true)
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batchExecute(userCommands.toList)
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val res = batchExecute(userCommands.toList)
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if (!batchMode.get) block() else res
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}
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}
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}
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@ -24,7 +24,7 @@ import sbt.internal._
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import sbt.internal.client.BspClient
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import sbt.internal.inc.ScalaInstance
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import sbt.internal.io.Retry
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import sbt.internal.nio.CheckBuildSources
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import sbt.internal.nio.{ CheckBuildSources, FileTreeRepository }
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import sbt.internal.server.NetworkChannel
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import sbt.internal.util.Types.{ const, idFun }
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import sbt.internal.util._
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@ -269,8 +269,10 @@ object BuiltinCommands {
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continuous,
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clearCaches,
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NetworkChannel.disconnect,
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waitCmd,
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promptChannel,
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setTerminalCommand,
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) ++ allBasicCommands
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) ++ allBasicCommands ++ ContinuousCommands.value
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def DefaultBootCommands: Seq[String] =
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WriteSbtVersion :: LoadProject :: NotifyUsersAboutShell :: s"$IfLast $Shell" :: Nil
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@ -890,10 +892,14 @@ object BuiltinCommands {
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val session = Load.initialSession(structure, eval, s0)
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SessionSettings.checkSession(session, s2)
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val s3 = addCacheStoreFactoryFactory(Project.setProject(session, structure, s2))
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val s4 = LintUnused.lintUnusedFunc(s3)
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CheckBuildSources.init(s4)
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val s4 = setupGlobalFileTreeRepository(s3)
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CheckBuildSources.init(LintUnused.lintUnusedFunc(s4))
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}
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private val setupGlobalFileTreeRepository: State => State = { state =>
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state.get(sbt.nio.Keys.globalFileTreeRepository).foreach(_.close())
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state.put(sbt.nio.Keys.globalFileTreeRepository, FileTreeRepository.default)
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}
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private val addCacheStoreFactoryFactory: State => State = (s: State) => {
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val size = Project
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.extract(s)
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@ -926,6 +932,40 @@ object BuiltinCommands {
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s
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}
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private[sbt] def waitCmd: Command =
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Command.arb(_ => (ContinuousCommands.waitWatch: Parser[String]).examples()) { (s0, _) =>
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val exchange = StandardMain.exchange
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if (exchange.channels.exists(ContinuousCommands.isInWatch)) {
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val s1 = exchange.run(s0)
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exchange.channels.foreach {
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case c if ContinuousCommands.isPending(c) =>
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case c => c.prompt(ConsolePromptEvent(s1))
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}
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val exec: Exec = getExec(s1, Duration.Inf)
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val remaining: List[Exec] =
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Exec(ContinuousCommands.waitWatch, None) ::
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Exec(FailureWall, None) :: s1.remainingCommands
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val newState = s1.copy(remainingCommands = exec +: remaining)
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if (exec.commandLine.trim.isEmpty) newState
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else newState.clearGlobalLog
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} else s0
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}
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private[sbt] def promptChannel = Command.arb(_ => reportParser(PromptChannel)) {
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(state, channel) =>
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if (channel == ConsoleChannel.defaultName) {
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if (!state.remainingCommands.exists(_.commandLine == Shell))
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state.copy(remainingCommands = state.remainingCommands ::: (Exec(Shell, None) :: Nil))
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else state
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} else {
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StandardMain.exchange.channelForName(channel) match {
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case Some(nc: NetworkChannel) => nc.prompt()
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case _ =>
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}
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state
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}
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}
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private def getExec(state: State, interval: Duration): Exec = {
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val exec: Exec =
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StandardMain.exchange.blockUntilNextExec(interval, Some(state), state.globalLogging.full)
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@ -158,12 +158,18 @@ private[sbt] final class CommandExchange {
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currentExec.filter(_.source.map(_.channelName) == Some(c.name)).foreach { e =>
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Util.ignoreResult(NetworkChannel.cancel(e.execId, e.execId.getOrElse("0")))
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}
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if (ContinuousCommands.isInWatch(c)) {
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try commandQueue.put(Exec(s"${ContinuousCommands.stopWatch} ${c.name}", None))
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catch { case _: InterruptedException => }
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}
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}
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private[this] def mkAskUser(
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name: String,
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): (State, CommandChannel) => UITask = { (state, channel) =>
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new UITask.AskUserTask(state, channel)
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ContinuousCommands
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.watchUITaskFor(channel)
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.getOrElse(new UITask.AskUserTask(state, channel))
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}
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private[sbt] def currentExec = Option(currentExecRef.get)
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@ -332,7 +338,10 @@ private[sbt] final class CommandExchange {
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def prompt(event: ConsolePromptEvent): Unit = {
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currentExecRef.set(null)
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channels.foreach(_.prompt(event))
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channels.foreach {
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case c if ContinuousCommands.isInWatch(c) =>
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case c => c.prompt(event)
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}
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}
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def unprompt(event: ConsoleUnpromptEvent): Unit = channels.foreach(_.unprompt(event))
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@ -401,8 +410,15 @@ private[sbt] final class CommandExchange {
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case null =>
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case mt: MaintenanceTask =>
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mt.task match {
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case `attach` => mt.channel.prompt(ConsolePromptEvent(lastState.get))
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case "cancel" => Option(currentExecRef.get).foreach(cancel)
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case `attach` => mt.channel.prompt(ConsolePromptEvent(lastState.get))
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case "cancel" => Option(currentExecRef.get).foreach(cancel)
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case t if t.startsWith(ContinuousCommands.stopWatch) =>
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ContinuousCommands.stopWatchImpl(mt.channel.name)
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mt.channel match {
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case c: NetworkChannel if !c.isInteractive => exit(mt)
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case _ => mt.channel.prompt(ConsolePromptEvent(lastState.get))
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}
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commandQueue.add(Exec(t, None, None))
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case "exit" => exit(mt)
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case "shutdown" => shutdown(mt.channel.name)
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case _ =>
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File diff suppressed because it is too large
Load Diff
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@ -5,7 +5,8 @@
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* Licensed under Apache License 2.0 (see LICENSE)
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*/
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package sbt.internal
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package sbt
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package internal
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import java.nio.file.Path
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import java.util.concurrent.atomic.AtomicReference
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@ -29,7 +30,7 @@ private[internal] trait DeprecatedContinuous {
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}
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private[this] val legacyWatchState =
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AttributeKey[AtomicReference[WS]]("legacy-watch-state", Int.MaxValue)
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protected def addLegacyWatchSetting(state: State): State = {
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private[sbt] def addLegacyWatchSetting(state: State): State = {
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val legacyState = new AtomicReference[WS](WS.empty(Nil).withCount(1))
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state
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.put(
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@ -60,8 +61,9 @@ private[internal] trait DeprecatedContinuous {
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@silent
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private[sbt] object DeprecatedContinuous {
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private[sbt] val taskDefinitions = Seq(
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private[sbt] val taskDefinitions: Seq[Def.Setting[_]] = Seq(
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sbt.Keys.watchTransitiveSources := sbt.Defaults.watchTransitiveSourcesTask.value,
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sbt.Keys.watch := sbt.Defaults.watchSetting.value,
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sbt.nio.Keys.watchTasks := Continuous.continuousTask.evaluated,
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)
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}
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@ -40,7 +40,8 @@ import Serialization.attach
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import sjsonnew._
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import sjsonnew.support.scalajson.unsafe.{ CompactPrinter, Converter }
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import Serialization.attach
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import BasicJsonProtocol._
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import Serialization.{ attach, promptChannel }
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final class NetworkChannel(
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val name: String,
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@ -93,10 +94,14 @@ final class NetworkChannel(
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if (!isInteractive) terminal.setPrompt(Prompt.Batch)
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attached.set(true)
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pendingRequests.remove(id)
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import sjsonnew.BasicJsonProtocol._
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jsonRpcRespond("", id)
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initiateMaintenance(attach)
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}
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private[sbt] def prompt(): Unit = {
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terminal.setPrompt(Prompt.Running)
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interactive.set(true)
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jsonRpcNotify(promptChannel, "")
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}
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private[sbt] def write(byte: Byte) = inputBuffer.add(byte)
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private[this] val terminalHolder = new AtomicReference(Terminal.NullTerminal)
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@ -138,7 +143,7 @@ final class NetworkChannel(
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protected def authOptions: Set[ServerAuthentication] = auth
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override def mkUIThread: (State, CommandChannel) => UITask = (state, command) => {
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if (interactive.get) mkUIThreadImpl(state, command)
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if (interactive.get || ContinuousCommands.isInWatch(this)) mkUIThreadImpl(state, command)
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else
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new UITask {
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override private[sbt] def channel = NetworkChannel.this
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@ -611,6 +616,7 @@ final class NetworkChannel(
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LogMessageParams(MessageType.fromLevelString(level), message)
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)
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}
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private[this] lazy val inputStream: InputStream = new InputStream {
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override def read(): Int = {
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try {
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@ -703,7 +709,8 @@ final class NetworkChannel(
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override def getHeight: Int = getProperty(_.height, 0).getOrElse(0)
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override def isAnsiSupported: Boolean = getProperty(_.isAnsiSupported, false).getOrElse(false)
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override def isEchoEnabled: Boolean = waitForPending(_.isEchoEnabled)
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override def isSuccessEnabled: Boolean = prompt != Prompt.Batch
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override def isSuccessEnabled: Boolean =
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prompt != Prompt.Batch || ContinuousCommands.isInWatch(NetworkChannel.this)
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override lazy val isColorEnabled: Boolean = waitForPending(_.isColorEnabled)
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override lazy val isSupershellEnabled: Boolean = waitForPending(_.isSupershellEnabled)
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getProperties(false)
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@ -114,6 +114,7 @@ object Keys {
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"The message to show when triggered execution waits for sources to change. The parameters are the current watch iteration count, the current project name and the tasks that are being run with each build."
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).withRank(DSetting)
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// The watchTasks key should really be named watch, but that is already taken by the deprecated watch key. I'd be surprised if there are any plugins that use it so I think we should consider breaking binary compatibility to rename this task.
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@deprecated("The watch input task no longer has any effect.", "1.4.0")
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val watchTasks = InputKey[StateTransform](
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"watch",
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"Watch a task (or multiple tasks) and rebuild when its file inputs change or user input is received. The semantics are more or less the same as the `~` command except that it cannot transform the state on exit. This means that it cannot be used to reload the build."
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@ -15,7 +15,6 @@ import java.util.concurrent.TimeUnit
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import sbt.BasicCommandStrings.ContinuousExecutePrefix
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import sbt._
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import sbt.internal.Continuous
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import sbt.internal.LabeledFunctions._
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import sbt.internal.nio.FileEvent
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import sbt.internal.util.complete.Parser
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@ -121,9 +120,9 @@ object Watch {
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}
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/**
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* This trait is used to control the state of [[Watch.apply]]. The [[Watch.Trigger]] action
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* indicates that [[Watch.apply]] should re-run the input task. The [[Watch.CancelWatch]]
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* actions indicate that [[Watch.apply]] should exit and return the [[Watch.CancelWatch]]
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* This trait is used to control the state of Watch. The [[Watch.Trigger]] action
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* indicates that Watch should re-run the input task. The [[Watch.CancelWatch]]
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* actions indicate that Watch should exit and return the [[Watch.CancelWatch]]
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* instance that caused the function to exit. The [[Watch.Ignore]] action is used to indicate
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* that the method should keep polling for new actions.
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*/
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@ -199,6 +198,12 @@ object Watch {
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case _: HandleError => 0
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case _ => -1
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}
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case Prompt =>
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right match {
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case Prompt => 0
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case CancelWatch | Reload | (_: Run) => -1
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case _ => 1
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}
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case _: Run =>
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right match {
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case _: Run => 0
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@ -228,6 +233,9 @@ object Watch {
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override def hashCode: Int = throwable.hashCode
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override def toString: String = s"HandleError($throwable)"
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}
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object HandleError {
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def unapply(h: HandleError): Option[Throwable] = Some(h.throwable)
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}
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/**
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* Action that indicates that an error has occurred. The watch will be terminated when this action
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@ -237,6 +245,9 @@ object Watch {
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extends HandleError(throwable) {
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override def toString: String = s"HandleUnexpectedError($throwable)"
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}
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object HandleUnexpectedError {
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def unapply(h: HandleUnexpectedError): Option[Throwable] = Some(h.throwable)
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}
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/**
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* Action that indicates that the watch should continue as though nothing happened. This may be
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@ -278,6 +289,8 @@ object Watch {
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def unapply(r: Run): Option[List[Exec]] = Some(r.commands.toList.map(Exec(_, None)))
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}
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case object Prompt extends CancelWatch
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/**
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* Action that indicates that the watch process should re-run the command.
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*/
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@ -285,7 +298,7 @@ object Watch {
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/**
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* A user defined Action. It is not sealed so that the user can create custom instances. If
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* the onStart or nextAction function passed into [[Watch.apply]] returns [[Watch.Custom]], then
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* the onStart or nextAction function passed into Watch returns [[Watch.Custom]], then
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* the watch will terminate.
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*/
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trait Custom extends CancelWatch
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@ -329,7 +342,17 @@ object Watch {
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new impl(input, display, description, action)
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}
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private type NextAction = () => Watch.Action
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private type NextAction = Int => Watch.Action
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@deprecated(
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"Unused in sbt but left for binary compatibility. Use five argument version instead.",
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"1.4.0"
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)
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def apply(
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task: () => Unit,
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onStart: () => Watch.Action,
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nextAction: () => Watch.Action,
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): Watch.Action = apply(0, _ => task(), _ => onStart(), _ => nextAction(), recursive = true)
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/**
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* Runs a task and then blocks until the task is ready to run again or we no longer wish to
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||||
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@ -341,33 +364,49 @@ object Watch {
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* @return the exit [[Watch.Action]] that can be used to potentially modify the build state and
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* the count of the number of iterations that were run. If
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*/
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def apply(task: () => Unit, onStart: NextAction, nextAction: NextAction): Watch.Action = {
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def safeNextAction(delegate: NextAction): Watch.Action =
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try delegate()
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def apply(
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initialCount: Int,
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task: Int => Unit,
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onStart: NextAction,
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nextAction: NextAction,
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recursive: Boolean
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): Watch.Action = {
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def safeNextAction(count: Int, delegate: NextAction): Watch.Action =
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try delegate(count)
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catch {
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case NonFatal(t) =>
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||||
System.err.println(s"Watch caught unexpected error:")
|
||||
t.printStackTrace(System.err)
|
||||
new HandleError(t)
|
||||
}
|
||||
@tailrec def next(): Watch.Action = safeNextAction(nextAction) match {
|
||||
@tailrec def next(count: Int): Watch.Action = safeNextAction(count, nextAction) match {
|
||||
// This should never return Ignore due to this condition.
|
||||
case Ignore => next()
|
||||
case Ignore => next(count)
|
||||
case action => action
|
||||
}
|
||||
@tailrec def impl(): Watch.Action = {
|
||||
task()
|
||||
safeNextAction(onStart) match {
|
||||
@tailrec def impl(count: Int): Watch.Action = {
|
||||
task(count)
|
||||
safeNextAction(count, onStart) match {
|
||||
case Ignore =>
|
||||
next() match {
|
||||
case Trigger => impl()
|
||||
case action => action
|
||||
next(count) match {
|
||||
case Trigger =>
|
||||
if (recursive) impl(count + 1)
|
||||
else {
|
||||
task(count)
|
||||
Watch.Trigger
|
||||
}
|
||||
case action => action
|
||||
}
|
||||
case Trigger => impl()
|
||||
case a => a
|
||||
case Trigger =>
|
||||
if (recursive) impl(count + 1)
|
||||
else {
|
||||
task(count)
|
||||
Watch.Trigger
|
||||
}
|
||||
case a => a
|
||||
}
|
||||
}
|
||||
try impl()
|
||||
try impl(initialCount)
|
||||
catch { case NonFatal(t) => new HandleError(t) }
|
||||
}
|
||||
|
||||
|
|
@ -391,9 +430,7 @@ object Watch {
|
|||
* are non empty.
|
||||
*/
|
||||
@inline
|
||||
private[sbt] def aggregate(
|
||||
events: Seq[(Action, Event)]
|
||||
): Option[(Action, Event)] =
|
||||
private[sbt] def aggregate(events: Seq[(Action, Event)]): Option[(Action, Event)] =
|
||||
if (events.isEmpty) None else Some(events.minBy(_._1))
|
||||
|
||||
private implicit class StringToExec(val s: String) extends AnyVal {
|
||||
|
|
@ -446,10 +483,10 @@ object Watch {
|
|||
case Seq(h, rest @ _*) => rest.foldLeft(h.parser)(_ | _.parser)
|
||||
}
|
||||
final val defaultInputOptions: Seq[Watch.InputOption] = Seq(
|
||||
Watch.InputOption("<enter>", "interrupt (exits sbt in batch mode)", Run(""), '\n', '\r'),
|
||||
Watch.InputOption(4.toChar, "<ctrl-d>", "interrupt (exits sbt in batch mode)", Run("")),
|
||||
Watch.InputOption("<enter>", "interrupt (exits sbt in batch mode)", CancelWatch, '\n', '\r'),
|
||||
Watch.InputOption(4.toChar, "<ctrl-d>", "interrupt (exits sbt in batch mode)", CancelWatch),
|
||||
Watch.InputOption('r', "re-run the command", Trigger),
|
||||
Watch.InputOption('s', "return to shell", Run("iflast shell")),
|
||||
Watch.InputOption('s', "return to shell", Prompt),
|
||||
Watch.InputOption('q', "quit sbt", Run("exit")),
|
||||
Watch.InputOption('?', "print options", ShowOptions)
|
||||
)
|
||||
|
|
@ -572,8 +609,6 @@ object Watch {
|
|||
sbt.Keys.watchService :== Watched.newWatchService,
|
||||
watchInputOptions :== Watch.defaultInputOptions,
|
||||
watchStartMessage :== Watch.defaultStartWatch,
|
||||
watchTasks := Continuous.continuousTask.evaluated,
|
||||
sbt.Keys.aggregate in watchTasks :== false,
|
||||
watchTriggeredMessage :== Watch.defaultOnTriggerMessage,
|
||||
watchForceTriggerOnAnyChange :== false,
|
||||
watchPersistFileStamps := (sbt.Keys.turbo in ThisBuild).value,
|
||||
|
|
|
|||
|
|
@ -1,171 +0,0 @@
|
|||
/*
|
||||
* sbt
|
||||
* Copyright 2011 - 2018, Lightbend, Inc.
|
||||
* Copyright 2008 - 2010, Mark Harrah
|
||||
* Licensed under Apache License 2.0 (see LICENSE)
|
||||
*/
|
||||
|
||||
package sbt
|
||||
|
||||
import java.io.{ File, InputStream }
|
||||
import java.nio.file.{ Files, Path }
|
||||
import java.util.concurrent.atomic.{ AtomicBoolean, AtomicInteger }
|
||||
|
||||
import org.scalatest.{ FlatSpec, Matchers }
|
||||
import sbt.WatchSpec._
|
||||
import sbt.internal.nio.{ FileEvent, FileEventMonitor, FileTreeRepository }
|
||||
import sbt.io._
|
||||
import sbt.nio.Watch
|
||||
import sbt.nio.Watch.{ NullLogger, _ }
|
||||
import sbt.nio.file.{ FileAttributes, Glob, RecursiveGlob }
|
||||
import sbt.nio.file.syntax._
|
||||
import sbt.util.Logger
|
||||
|
||||
import scala.collection.mutable
|
||||
import scala.concurrent.duration._
|
||||
|
||||
class WatchSpec extends FlatSpec with Matchers {
|
||||
private type NextAction = () => Watch.Action
|
||||
private def watch(task: Task, callbacks: (NextAction, NextAction)): Watch.Action =
|
||||
Watch(task, callbacks._1, callbacks._2)
|
||||
object TestDefaults {
|
||||
def callbacks(
|
||||
inputs: Seq[Glob],
|
||||
fileEventMonitor: Option[FileEventMonitor[FileEvent[FileAttributes]]] = None,
|
||||
logger: Logger = NullLogger,
|
||||
parseEvent: () => Watch.Action = () => Ignore,
|
||||
onStartWatch: () => Watch.Action = () => CancelWatch: Watch.Action,
|
||||
onWatchEvent: FileEvent[FileAttributes] => Watch.Action = _ => Ignore,
|
||||
triggeredMessage: FileEvent[FileAttributes] => Option[String] = _ => None,
|
||||
watchingMessage: () => Option[String] = () => None
|
||||
): (NextAction, NextAction) = {
|
||||
val monitor: FileEventMonitor[FileEvent[FileAttributes]] = fileEventMonitor.getOrElse {
|
||||
val fileTreeRepository = FileTreeRepository.default
|
||||
inputs.foreach(fileTreeRepository.register)
|
||||
FileEventMonitor.antiEntropy(
|
||||
fileTreeRepository,
|
||||
50.millis,
|
||||
m => logger.debug(m.toString),
|
||||
50.millis,
|
||||
10.minutes
|
||||
)
|
||||
}
|
||||
val onTrigger: FileEvent[FileAttributes] => Unit = event => {
|
||||
triggeredMessage(event).foreach(logger.info(_))
|
||||
}
|
||||
val onStart: () => Watch.Action = () => {
|
||||
watchingMessage().foreach(logger.info(_))
|
||||
onStartWatch()
|
||||
}
|
||||
val nextAction: NextAction = () => {
|
||||
val inputAction = parseEvent()
|
||||
val fileActions = monitor.poll(10.millis).map { e: FileEvent[FileAttributes] =>
|
||||
onWatchEvent(e) match {
|
||||
case Trigger => onTrigger(e); Trigger
|
||||
case action => action
|
||||
}
|
||||
}
|
||||
(inputAction +: fileActions).min
|
||||
}
|
||||
(onStart, nextAction)
|
||||
}
|
||||
}
|
||||
object NullInputStream extends InputStream {
|
||||
override def available(): Int = 0
|
||||
override def read(): Int = -1
|
||||
}
|
||||
private class Task extends (() => Unit) {
|
||||
private val count = new AtomicInteger(0)
|
||||
override def apply(): Unit = {
|
||||
count.incrementAndGet()
|
||||
()
|
||||
}
|
||||
def getCount: Int = count.get()
|
||||
}
|
||||
"Watch" should "stop" in IO.withTemporaryDirectory { dir =>
|
||||
val task = new Task
|
||||
watch(task, TestDefaults.callbacks(inputs = Seq(dir.toRealPath.toGlob / RecursiveGlob))) shouldBe CancelWatch
|
||||
}
|
||||
it should "trigger" in IO.withTemporaryDirectory { dir =>
|
||||
val triggered = new AtomicBoolean(false)
|
||||
val task = new Task
|
||||
val callbacks = TestDefaults.callbacks(
|
||||
inputs = Seq(dir.toRealPath.toGlob / RecursiveGlob),
|
||||
onStartWatch = () => if (task.getCount == 2) CancelWatch else Ignore,
|
||||
onWatchEvent = _ => { triggered.set(true); Trigger },
|
||||
watchingMessage = () => {
|
||||
new File(dir, "file").createNewFile; None
|
||||
}
|
||||
)
|
||||
watch(task, callbacks) shouldBe CancelWatch
|
||||
assert(triggered.get())
|
||||
}
|
||||
it should "filter events" in IO.withTemporaryDirectory { dir =>
|
||||
val realDir = dir.toRealPath
|
||||
val queue = new mutable.Queue[Path]
|
||||
val foo = realDir.toPath.resolve("foo")
|
||||
val bar = realDir.toPath.resolve("bar")
|
||||
val task = new Task
|
||||
val callbacks = TestDefaults.callbacks(
|
||||
inputs = Seq(realDir.toGlob / RecursiveGlob),
|
||||
onStartWatch = () => if (task.getCount == 2) CancelWatch else Ignore,
|
||||
onWatchEvent = e => if (e.path == foo) Trigger else Ignore,
|
||||
triggeredMessage = e => { queue += e.path; None },
|
||||
watchingMessage = () => {
|
||||
IO.touch(bar.toFile); Thread.sleep(5); IO.touch(foo.toFile)
|
||||
None
|
||||
}
|
||||
)
|
||||
watch(task, callbacks) shouldBe CancelWatch
|
||||
queue.toIndexedSeq shouldBe Seq(foo)
|
||||
}
|
||||
it should "enforce anti-entropy" in IO.withTemporaryDirectory { dir =>
|
||||
val realDir = dir.toRealPath
|
||||
val queue = new mutable.Queue[Path]
|
||||
val foo = realDir.toPath.resolve("foo")
|
||||
val bar = realDir.toPath.resolve("bar")
|
||||
val task = new Task
|
||||
val callbacks = TestDefaults.callbacks(
|
||||
inputs = Seq(realDir.toGlob / RecursiveGlob),
|
||||
onStartWatch = () => if (task.getCount == 3) CancelWatch else Ignore,
|
||||
onWatchEvent = e => if (e.path != realDir.toPath) Trigger else Ignore,
|
||||
triggeredMessage = e => { queue += e.path; None },
|
||||
watchingMessage = () => {
|
||||
task.getCount match {
|
||||
case 1 => Files.createFile(bar)
|
||||
case 2 =>
|
||||
bar.toFile.setLastModified(5000)
|
||||
Files.createFile(foo)
|
||||
case _ =>
|
||||
}
|
||||
None
|
||||
}
|
||||
)
|
||||
watch(task, callbacks) shouldBe CancelWatch
|
||||
queue.toIndexedSeq shouldBe Seq(bar, foo)
|
||||
}
|
||||
it should "halt on error" in IO.withTemporaryDirectory { dir =>
|
||||
val exception = new IllegalStateException("halt")
|
||||
val task = new Task { override def apply(): Unit = throw exception }
|
||||
val callbacks = TestDefaults.callbacks(
|
||||
Seq(dir.toRealPath.toGlob / RecursiveGlob),
|
||||
)
|
||||
watch(task, callbacks) shouldBe new HandleError(exception)
|
||||
}
|
||||
it should "reload" in IO.withTemporaryDirectory { dir =>
|
||||
val task = new Task
|
||||
val callbacks = TestDefaults.callbacks(
|
||||
inputs = Seq(dir.toRealPath.toGlob / RecursiveGlob),
|
||||
onStartWatch = () => Ignore,
|
||||
onWatchEvent = _ => Watch.Reload,
|
||||
watchingMessage = () => { new File(dir, "file").createNewFile(); None }
|
||||
)
|
||||
watch(task, callbacks) shouldBe Watch.Reload
|
||||
}
|
||||
}
|
||||
|
||||
object WatchSpec {
|
||||
implicit class FileOps(val f: File) {
|
||||
def toRealPath: File = f.toPath.toRealPath().toFile
|
||||
}
|
||||
}
|
||||
|
|
@ -33,6 +33,7 @@ object Serialization {
|
|||
val attach = "sbt/attach"
|
||||
val attachResponse = "sbt/attachResponse"
|
||||
val cancelRequest = "sbt/cancelRequest"
|
||||
val promptChannel = "sbt/promptChannel"
|
||||
val CancelAll = "__CancelAll"
|
||||
|
||||
@deprecated("unused", since = "1.4.0")
|
||||
|
|
|
|||
|
|
@ -16,6 +16,7 @@ object Build {
|
|||
val (stringFile, string) = ("foo.txt", "bar")
|
||||
val absoluteFile = baseDirectory.value.toPath.resolve(stringFile).toFile
|
||||
IO.write(absoluteFile, string)
|
||||
println(s"wrote to $absoluteFile")
|
||||
}
|
||||
def checkStringValueImpl: Def.Initialize[InputTask[Unit]] = Def.inputTask {
|
||||
val Seq(stringFile, string) = Def.spaceDelimited().parsed
|
||||
|
|
@ -37,9 +38,5 @@ object Build {
|
|||
}.value,
|
||||
checkStringValue := checkStringValueImpl.evaluated,
|
||||
watchOnFileInputEvent := { (_, _) => Watch.CancelWatch },
|
||||
watchTasks := Def.inputTask {
|
||||
watchTasks.evaluated
|
||||
StateTransform(_.fail)
|
||||
}.evaluated
|
||||
)
|
||||
}
|
||||
|
|
|
|||
|
|
@ -2,6 +2,6 @@
|
|||
# In the build, watchOnEvent should return CancelWatch which should be successful, but we
|
||||
# override watchTasks to fail the state instead
|
||||
|
||||
-> watch root / setStringValue
|
||||
> ~ root / setStringValue
|
||||
|
||||
> checkStringValue foo.txt bar
|
||||
|
|
|
|||
|
|
@ -22,10 +22,6 @@ object Build {
|
|||
setStringValue / watchTriggers += baseDirectory.value.toGlob / "foo.txt",
|
||||
setStringValue := setStringValueImpl.evaluated,
|
||||
checkStringValue := checkStringValueImpl.evaluated,
|
||||
watchOnFileInputEvent := { (_, _) => Watch.CancelWatch },
|
||||
watchTasks := Def.inputTask {
|
||||
val prev = watchTasks.evaluated
|
||||
StateTransform(_.fail)
|
||||
}.evaluated
|
||||
watchOnFileInputEvent := { (_, _) => new Watch.HandleError(new IllegalStateException("")) },
|
||||
)
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -2,6 +2,6 @@
|
|||
# In the build, watchOnEvent should return CancelWatch which should be successful, but we
|
||||
# override watchTasks to fail the state instead
|
||||
|
||||
-> watch root / setStringValue foo.txt bar
|
||||
-> ~ root / setStringValue foo.txt bar
|
||||
|
||||
> checkStringValue foo.txt bar
|
||||
|
|
|
|||
|
|
@ -162,7 +162,12 @@ final class ScriptedTests(
|
|||
case ("classloader-cache", "jni") => true // no native lib is built for windows
|
||||
case ("classloader-cache", "snapshot") =>
|
||||
true // the test overwrites a jar that is being used which is verboten in windows
|
||||
case ("nio", "make-clone") => true // uses gcc which isn't set up on all systems
|
||||
// The test spark server is unable to bind to a local socket on Visual Studio 2019
|
||||
case ("classloader-cache", "spark") => true
|
||||
case ("nio", "make-clone") => true // uses gcc which isn't set up on all systems
|
||||
// symlinks don't work the same on windows. Symlink monitoring does work in many cases
|
||||
// on windows but not to the same level as it does on osx and linux
|
||||
case ("watch", "symlinks") => true
|
||||
case _ => false
|
||||
}
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in New Issue