public override async Task <ResultStatus> Execute(IExecuteContext executeContext, BuilderContext builderContext)
{
ListStore <CommandResultEntry> commandResultEntries;
// Prevent several command build step to evaluate wheither they should start at the same time. This increase the efficiency of the builder by avoiding the same command to be executed several time in parallel
// NOTE: Careful here, there's no try/finally block around the monitor Enter/Exit, so no non-fatal exception is allowed!
Monitor.Enter(executeContext);
bool monitorExited = false;
var status = ResultStatus.NotProcessed;
// if any external input has changed since the last execution (or if we don't have a successful execution in cache, trigger the command
CommandResultEntry matchingResult = null;
try
{
ObjectId commandHash;
{
// try to retrieve result from one of the object store
commandHash = Command.ComputeCommandHash(executeContext);
// Early exit if the hash of the command failed
if (commandHash == ObjectId.Empty)
{
return(ResultStatus.Failed);
}
var commandResultsFileStream = executeContext.ResultMap.OpenStream(commandHash, VirtualFileMode.OpenOrCreate, VirtualFileAccess.ReadWrite, VirtualFileShare.ReadWrite);
commandResultEntries = new ListStore <CommandResultEntry>(commandResultsFileStream)
{
AutoLoadNewValues = false
};
commandResultEntries.LoadNewValues();
}
if (ShouldExecute(executeContext, commandResultEntries.GetValues(), commandHash, out matchingResult))
{
CommandBuildStep stepInProgress = executeContext.IsCommandCurrentlyRunning(commandHash);
if (stepInProgress != null)
{
Monitor.Exit(executeContext);
monitorExited = true;
executeContext.Logger.Debug("Command {0} delayed because it is currently running...", Command.ToString());
status = (await stepInProgress.ExecutedAsync()).Status;
matchingResult = stepInProgress.Result;
}
else
{
executeContext.NotifyCommandBuildStepStarted(this, commandHash);
Monitor.Exit(executeContext);
monitorExited = true;
executeContext.Logger.Debug("Command {0} scheduled...", Command.ToString());
// Register the cancel callback
var cancellationTokenSource = executeContext.CancellationTokenSource;
cancellationTokenSource.Token.Register(x => ((Command)x).Cancel(), Command);
Command.CancellationToken = cancellationTokenSource.Token;
try
{
status = await StartCommand(executeContext, commandResultEntries, builderContext);
}
finally
{
// Restore cancellation token (to avoid memory leak due to previous CancellationToken.Register
Command.CancellationToken = CancellationToken.None;
}
executeContext.NotifyCommandBuildStepFinished(this, commandHash);
}
}
}
finally
{
if (!monitorExited)
{
Monitor.Exit(executeContext);
}
}
// The command has not been executed
if (matchingResult != null)
{
using (commandResultEntries)
{
// Replicate triggered builds
Debug.Assert(SpawnedStepsList.Count == 0);
foreach (Command spawnedCommand in matchingResult.SpawnedCommands)
{
var spawnedStep = new CommandBuildStep(spawnedCommand);
SpawnedStepsList.Add(spawnedStep);
executeContext.ScheduleBuildStep(spawnedStep);
}
// Re-output command log messages
foreach (var message in matchingResult.LogMessages)
{
executeContext.Logger.Log(message);
}
// Wait for all build steps to complete.
// TODO: Ideally, we should store and replicate the behavior of the command that spawned it
// (wait if it used ScheduleAndExecute, don't wait if it used RegisterSpawnedCommandWithoutScheduling)
await Task.WhenAll(SpawnedSteps.Select(x => x.ExecutedAsync()));
status = ResultStatus.NotTriggeredWasSuccessful;
RegisterCommandResult(commandResultEntries, matchingResult, status);
}
}
return(status);
}
public override async Task <ResultStatus> Execute(IExecuteContext executeContext, BuilderContext builderContext)
{
ListStore <CommandResultEntry> commandResultEntries;
// Prevent several command build step to evaluate wheither they should start at the same time. This increase the efficiency of the builder by avoiding the same command to be executed several time in parallel
// NOTE: Careful here, there's no try/finally block around the monitor Enter/Exit, so no non-fatal exception is allowed!
Monitor.Enter(executeContext);
ObjectId commandHash;
//await Task.Factory.StartNew(() =>
{
// try to retrieve result from one of the object store
commandHash = Command.ComputeCommandHash(executeContext);
var commandResultsFileStream = executeContext.ResultMap.OpenStream(commandHash, VirtualFileMode.OpenOrCreate, VirtualFileAccess.ReadWrite, VirtualFileShare.ReadWrite);
commandResultEntries = new ListStore <CommandResultEntry>(commandResultsFileStream)
{
AutoLoadNewValues = false
};
commandResultEntries.LoadNewValues();
}
//);
// if any external input has changed since the last execution (or if we don't have a successful execution in cache, trigger the command
CommandResultEntry matchingResult;
var status = ResultStatus.NotProcessed;
if (ShouldExecute(executeContext, commandResultEntries.GetValues(), commandHash, out matchingResult))
{
CommandBuildStep stepInProgress = executeContext.IsCommandCurrentlyRunning(commandHash);
if (stepInProgress != null)
{
Monitor.Exit(executeContext);
executeContext.Logger.Debug("Command {0} delayed because it is currently running...", Command.ToString());
status = (await stepInProgress.ExecutedAsync()).Status;
matchingResult = stepInProgress.Result;
}
else
{
executeContext.NotifyCommandBuildStepStarted(this, commandHash);
Monitor.Exit(executeContext);
executeContext.Logger.Debug("Command {0} scheduled...", Command.ToString());
status = await StartCommand(executeContext, commandResultEntries, builderContext);
executeContext.NotifyCommandBuildStepFinished(this, commandHash);
}
}
else
{
Monitor.Exit(executeContext);
}
// The command has not been executed
if (matchingResult != null)
{
using (commandResultEntries)
{
// the command was not started because it is already up-to-date (retrieved from cache and no change in external files since last execution)
executeContext.Logger.Verbose("Command {0} is up-to-date, skipping...", Command.ToString());
// Replicate triggered builds
Debug.Assert(SpawnedStepsList.Count == 0);
foreach (Command spawnedCommand in matchingResult.SpawnedCommands)
{
var spawnedStep = new CommandBuildStep(spawnedCommand);
SpawnedStepsList.Add(spawnedStep);
executeContext.ScheduleBuildStep(spawnedStep);
}
// Wait for all build steps to complete.
// TODO: Ideally, we should store and replicate the behavior of the command that spawned it
// (wait if it used ScheduleAndExecute, don't wait if it used RegisterSpawnedCommandWithoutScheduling)
await Task.WhenAll(SpawnedSteps.Select(x => x.ExecutedAsync()));
status = ResultStatus.NotTriggeredWasSuccessful;
RegisterCommandResult(commandResultEntries, matchingResult, status);
}
}
return(status);
}