public async Task CheckForUpdates()
{
try
{
Trace.TraceInformation("Checking for updates");
IEnumerable <AppDeploymentConfig> applicationDeployments = await _applicationDeploymentDirectory.FetchDeployments();
IEnumerable <AppIdentity> runningApplications = _applicationPool.Applications.Select(app => app.Identity).ToList();
IEnumerable <AppIdentity> applicationsToRemove = FindApplicationsToRemove(runningApplications, applicationDeployments);
IEnumerable <AppDeploymentConfig> applicationsToDeploy = FindApplicationsToDeploy(runningApplications, applicationDeployments);
// download applications first
await DownloadApplications(applicationsToDeploy);
var allAppsIds = new HashSet <string>(applicationsToRemove.Select(identity => identity.Id));
allAppsIds.UnionWith(applicationsToDeploy.Select(config => config.AppIdentity.Id));
var tasks = new List <Task>();
foreach (string appId in allAppsIds)
{
IEnumerable <AppIdentity> appRemovals = applicationsToRemove.Where(identity => identity.Id.Equals(appId));
IEnumerable <AppDeploymentConfig> appDeployments = applicationsToDeploy.Where(config => config.AppIdentity.Id.Equals(appId));
// if an application has a removal(s) and deployment(s), we consider it an update
if (appRemovals.Any() && appDeployments.Any())
{
tasks.Add(_applicationInstaller.Update(appRemovals, appDeployments));
}
else
{
foreach (AppDeploymentConfig appDeploymentConfig in appDeployments)
{
tasks.Add(_applicationInstaller.Install(appDeploymentConfig));
}
foreach (AppIdentity appRemoval in appRemovals)
{
tasks.Add(_applicationInstaller.UnInstall(appRemoval));
}
}
}
await Task.WhenAll(tasks);
await UpdateDeploymentStatus();
}
catch (AggregateException e)
{
TraceUtils.TraceAllErrors("Failures occured during updates", e);
}
catch (Exception e)
{
Trace.TraceError("Failed to perform update; Exception was: {0}", e);
}
}
public async Task CheckForUpdates()
{
try
{
Trace.TraceInformation("Checking for updates");
IEnumerable <AppDeploymentConfig> applicationDeployments = await _applicationDeploymentDirectory.FetchDeployments();
IEnumerable <AppIdentity> runningApplications = _applicationPool.Applications.Select(app => app.Identity).ToList();
IEnumerable <AppIdentity> applicationsToRemove = FindApplicationsToRemove(runningApplications, applicationDeployments);
IEnumerable <AppDeploymentConfig> applicationsToDeploy = FindApplicationsToDeploy(runningApplications, applicationDeployments);
if (!applicationsToDeploy.Any() && !applicationsToRemove.Any())
{
return;
}
// download applications first
await DownloadApplications(applicationsToDeploy);
var allAppsIds = new HashSet <string>(applicationsToRemove.Select(identity => identity.Id));
allAppsIds.UnionWith(applicationsToDeploy.Select(config => config.AppIdentity.Id));
if (!await _updateSessionManager.TryStartUpdateSession())
{
Trace.TraceInformation("Couldn't start update session");
return;
}
var tasks = new List <Task>();
foreach (string appId in allAppsIds)
{
IEnumerable <AppIdentity> appRemovals = applicationsToRemove.Where(identity => identity.Id.Equals(appId));
IEnumerable <AppDeploymentConfig> appDeployments = applicationsToDeploy.Where(config => config.AppIdentity.Id.Equals(appId));
// if an application has a removal(s) and deployment(s), we consider it an update
if (appRemovals.Any() && appDeployments.Any())
{
tasks.Add(_applicationInstaller.Update(appRemovals, appDeployments));
}
else
{
foreach (AppDeploymentConfig appDeploymentConfig in appDeployments)
{
tasks.Add(_applicationInstaller.Install(appDeploymentConfig));
}
foreach (AppIdentity appRemoval in appRemovals)
{
tasks.Add(_applicationInstaller.UnInstall(appRemoval));
}
}
}
await Task.WhenAll(tasks);
// We will only end the update session if the update was successful. Otherwise, the update session will stay open and will prevent
// the deployment from moving to the next update domain.
await _updateSessionManager.EndUpdateSession();
}
catch (AggregateException e)
{
TraceUtils.TraceAllErrors("Failures occured during updates", e);
}
catch (Exception e)
{
Trace.TraceError("Failed to perform update; Exception: {0}", e);
}
finally
{
await UpdateDeploymentStatus();
}
}