/// <summary>
/// Extracts a deploy anncouncement.
/// </summary>
/// <param name="announcement">The announcement that needs to be extracted.</param>
/// <param name="token">Token of cancellation.</param>
/// <inheritdoc />
/// <exception cref="AggregateException">Throw when one or more fusions failed to extract.</exception>
public void Extract(IDeployAnnouncement announcement, CancellationToken token)
{
EnsureArg.IsNotNull(announcement, nameof(announcement));
var opts = new ParallelOptions
{
CancellationToken = token
};
var fusionIds = announcement.GetFusionIds();
Parallel.ForEach(fusionIds, opts, (_, state) =>
{
try
{
ExtractFusion(_, announcement);
}
catch (Exception ex)
{
state.Stop();
throw new FusionException(FusionException.ExtractionFailure, _, ex);
}
});
}
/// <summary>
/// Schedules an <see cref="IDeployAnnouncement"/>.
/// </summary>
/// <param name="announcement">The announcement that needs to be scheduled.</param>
/// <param name="token">The token of cancellation.</param>
/// <inheritdoc />
public async Task ScheduleAsync(IDeployAnnouncement announcement, CancellationToken token)
{
EnsureArg.IsNotNull(announcement, nameof(announcement));
var fusionIds = announcement
.GetFusionIds()
.OrderBy(_ => GetOrderId(_))
.Stale();
if (!isFullCompleted &&
announcement.IsDelta())
{
throw new ScheduleException(ScheduleException.FullAnnouncementRequired, "*");
}
await syncLock.WaitAsync();
try
{
var activeProcesses = GetActiveProcesses(fusionIds);
await TerminateMultipleAsync(activeProcesses, token); // drains and stops the services
logService.Info("Terminated all active fusion(s).");
fusionService.Extract(announcement, token); // extracts the new fusions
logService.Info("Extracted all new fusion(s).");
var newProcesses = SpawnMultiple(fusionIds, token).Stale(); // spawns the services
logService.Info("Spawned all new fusion(s).");
await WaitForAnnouncements(newProcesses, token); // wait for all port callbacks
logService.Info("Received all announcements from the new fusion(s).");
await StartupMultipleAsync(newProcesses, token); // calls all the startups + nurse statusses
logService.Info("Started all new fusion(s) and checked their patient(s).");
ResumeAll(token);
logService.Info("Resumed all drainers, deployment completed.");
if (!announcement.IsDelta())
{
isFullCompleted = true;
}
}
finally
{
syncLock.Release();
}
}
