private async Task PollGoalStateForCodePackagesAsync(CancellationToken cancellationToken)
{
var fabricClient = new FabricClient();
//// region: Initialization Parameters
FabricUpgradeProgress upgradeProgress;
try
{
upgradeProgress = await FabricClientRetryHelper.ExecuteFabricActionWithRetryAsync <FabricUpgradeProgress>(
() =>
fabricClient.ClusterManager.GetFabricUpgradeProgressAsync(TimeSpan.FromMinutes(DMConstants.FabricOperationTimeoutInMinutes), cancellationToken),
TimeSpan.FromMinutes(DMConstants.FabricOperationTimeoutInMinutes),
cancellationToken).ConfigureAwait(false);
}
catch (Exception ex)
{
this.traceSource.WriteError(TraceType, "GetFabricUpgradeProgressAsync threw: {0}", ex.ToString());
this.timerInterval = TimeSpan.FromMinutes(DMConstants.FabricUpgradeStatePollIntervalInMinutes);
return;
}
if (!FabricClientWrapper.IsUpgradeCompleted(upgradeProgress.UpgradeState))
{
this.timerInterval = TimeSpan.FromMinutes(DMConstants.FabricUpgradeStatePollIntervalInMinutes);
this.traceSource.WriteInfo(TraceType, "Cannot retrieve cluster version; FabricUpgradeState is currently: {0}. Will retry in {1}.", upgradeProgress.UpgradeState.ToString(), this.timerInterval.ToString());
return;
}
string currentVersionStr = upgradeProgress.TargetCodeVersion;
Version currentVersion = Version.Parse(currentVersionStr);
string packageDropDir = System.Fabric.Common.Helpers.GetNewTempPath();
NativeConfigStore configStore = NativeConfigStore.FabricGetConfigStore();
string goalStateUriStr = configStore.ReadUnencryptedString(DMConstants.UpgradeOrchestrationServiceConfigSectionName, DMConstants.GoalStateFileUrlName);
if (string.IsNullOrEmpty(goalStateUriStr))
{
goalStateUriStr = DMConstants.DefaultGoalStateFileUrl;
}
//// endregion
this.traceSource.WriteInfo(TraceType, "PollCodePackagesFromGoalState currentVersion: {0}, packageDropDir: {1} goalStateUri: {2}", currentVersionStr, packageDropDir, goalStateUriStr);
try
{
Uri goalStateUri = null;
string goalStateJson = null;
if (!Uri.TryCreate(goalStateUriStr, UriKind.Absolute, out goalStateUri))
{
string errorMessage = string.Format("Cannot parse GoalStateUri: {0}", goalStateUriStr);
this.traceSource.WriteError(TraceType, errorMessage);
ReleaseAssert.Fail(errorMessage);
return;
}
if (!(await StandaloneUtility.IsUriReachableAsync(goalStateUri).ConfigureAwait(false)))
{
this.timerInterval = TimeSpan.FromMinutes(DMConstants.FabricGoalStateReachablePollIntervalInMinutes);
this.traceSource.WriteWarning(TraceType, "Cannot reach download uri for goal state file: {0}. Will retry in {1}.", goalStateUri.AbsoluteUri, this.timerInterval.ToString());
this.EmitGoalStateReachableHealth(fabricClient, false);
return;
}
else
{
this.EmitGoalStateReachableHealth(fabricClient, true);
}
goalStateJson = await GoalStateModel.GetGoalStateFileJsonAsync(goalStateUri).ConfigureAwait(false);
if (string.IsNullOrEmpty(goalStateJson))
{
this.traceSource.WriteWarning(TraceType, "Loaded goal state JSON is empty.");
return;
}
GoalStateModel model = GoalStateModel.GetGoalStateModelFromJson(goalStateJson);
if (model == null || model.Packages == null)
{
this.traceSource.WriteWarning(TraceType, "Goal state JSON could not be deserialized:\n{0}", goalStateJson);
return;
}
string availableGoalStateVersions = string.Format("Available versions in goal state file: {0}", model.ToString());
this.traceSource.WriteInfo(TraceType, availableGoalStateVersions);
IEnumerable <PackageDetails> candidatePackages = model.Packages.Where(
package => currentVersion < Version.Parse(package.Version));
if (candidatePackages.Count() == 0)
{
this.traceSource.WriteInfo(TraceType, "No upgrades available.");
}
string versionCurrentStr = currentVersionStr;
Version versionCurrent = currentVersion;
PackageDetails targetPackage = null;
for (IEnumerable <PackageDetails> availableCandidatePackages = candidatePackages.Where(
package => (package.MinVersion == null || Version.Parse(package.MinVersion) <= versionCurrent));
availableCandidatePackages.Count() > 0;
versionCurrentStr = targetPackage.Version,
versionCurrent = Version.Parse(versionCurrentStr),
availableCandidatePackages = candidatePackages.Where(
package => (versionCurrent < Version.Parse(package.Version) &&
(package.MinVersion == null || Version.Parse(package.MinVersion) <= versionCurrent))))
{
if (!IsVersionUpgradeable(versionCurrentStr, model))
{
this.traceSource.WriteInfo(TraceType, "Version {0} is not upgradeable.", versionCurrentStr);
break;
}
int numPackages = availableCandidatePackages.Count();
if (numPackages == 0)
{
this.traceSource.WriteInfo(TraceType, "No upgrade available.");
return;
}
else if (numPackages == 1)
{
targetPackage = availableCandidatePackages.First();
}
else
{
Version maxVersion = StandaloneGoalStateProvisioner.ZeroVersion;
foreach (PackageDetails package in availableCandidatePackages)
{
Version targetVersion;
if (!Version.TryParse(package.Version, out targetVersion))
{
this.traceSource.WriteWarning(TraceType, "Package {0} version could not be parsed. Trying another one.", package.Version);
continue;
}
if (targetVersion > maxVersion)
{
targetPackage = package;
maxVersion = targetVersion;
}
}
}
try
{
if (await this.IsPackageProvisionedAsync(targetPackage.Version, fabricClient, cancellationToken).ConfigureAwait(false))
{
this.traceSource.WriteInfo(TraceType, "Package {0} is already provisioned.", targetPackage.Version);
continue;
}
}
catch (Exception ex)
{
this.traceSource.WriteError(TraceType, "PackageIsProvisioned for {0} threw: {1}", targetPackage.Version, ex.ToString());
}
string packageLocalDownloadPath = Path.Combine(packageDropDir, string.Format(DMConstants.SFPackageDropNameFormat, targetPackage.Version));
if (await StandaloneUtility.DownloadPackageAsync(targetPackage.Version, targetPackage.TargetPackageLocation, packageLocalDownloadPath).ConfigureAwait(false))
{
try
{
this.traceSource.WriteInfo(TraceType, "Copying and provisioning version {0} from {1}.", targetPackage.Version, packageLocalDownloadPath);
await ProvisionPackageAsync(targetPackage.Version, packageLocalDownloadPath, cancellationToken).ConfigureAwait(false);
}
catch (Exception ex)
{
this.traceSource.WriteError(TraceType, "ProvisionPackageAsync for {0}, package {1} threw: {2}", targetPackage.Version, packageLocalDownloadPath, ex.ToString());
}
}
}
// Determine if current version is latest/doesn't have expiry date. If package expiring, post cluster health warning.
PackageDetails currentPackage = model.Packages.Where(package => package.Version == currentVersionStr).FirstOrDefault();
if (currentPackage != null && currentPackage.SupportExpiryDate != null && !currentPackage.IsGoalPackage && !this.IsAutoupgradeInstallEnabled() && this.IsPackageNearExpiry(currentPackage))
{
this.traceSource.WriteWarning(TraceType, "Current version {0} expires {1}; emitting cluster warning.", currentVersionStr, currentPackage.SupportExpiryDate);
this.EmitClusterVersionSupportedHealth(fabricClient, false, currentVersionStr, currentPackage.SupportExpiryDate);
}
else
{
this.traceSource.WriteInfo(TraceType, "Current version {0} is supported. Cluster health OK.", currentVersionStr);
this.EmitClusterVersionSupportedHealth(fabricClient, true, null, null);
}
if (targetPackage != null &&
!string.IsNullOrEmpty(targetPackage.Version) &&
this.IsAutoupgradeInstallEnabled())
{
try
{
// fire off an upgrade.
this.StartCodeUpgrade(targetPackage.Version, fabricClient);
}
catch (Exception ex)
{
this.traceSource.WriteError(TraceType, "StartCodeUpgrade for version {0} threw: {1}", targetPackage.Version, ex.ToString());
}
}
}
finally
{
if (Directory.Exists(packageDropDir))
{
try
{
FabricDirectory.Delete(packageDropDir, true, true);
}
catch
{
}
}
}
}