private static void AutoRenewLeaseOnBlob(AzureBlobLease instance, Microsoft.Build.Utilities.TaskLoggingHelper log)
{
TimeSpan maxWait = TimeSpan.FromSeconds(s_MaxWaitDefault);
TimeSpan delay = TimeSpan.FromMilliseconds(s_DelayDefault);
TimeSpan waitFor = maxWait;
CancellationToken token = instance._cancellationTokenSource.Token;
while (true)
{
token.ThrowIfCancellationRequested();
try
{
log.LogMessage(MessageImportance.Low, $"Requesting lease for container/blob '{instance._containerName}/{instance._blobName}'.");
using (HttpClient client = new HttpClient())
{
Tuple <string, string> leaseAction = new Tuple <string, string>("x-ms-lease-action", "renew");
Tuple <string, string> headerLeaseId = new Tuple <string, string>("x-ms-lease-id", instance._leaseId);
List <Tuple <string, string> > additionalHeaders = new List <Tuple <string, string> >()
{
leaseAction, headerLeaseId
};
var request = AzureHelper.RequestMessage("PUT", instance._leaseUrl, instance._accountName, instance._accountKey, additionalHeaders);
using (HttpResponseMessage response = AzureHelper.RequestWithRetry(log, client, request).GetAwaiter().GetResult())
{
if (!response.IsSuccessStatusCode)
{
throw new Exception("Unable to acquire lease.");
}
}
}
waitFor = maxWait;
}
catch (Exception e)
{
Console.WriteLine($"Rerying lease renewal on {instance._containerName}, {e.Message}");
waitFor = delay;
}
token.ThrowIfCancellationRequested();
Task.Delay(waitFor, token).Wait();
}
}
public override bool Execute()
{
ParseConnectionString();
if (Log.HasLoggedErrors)
{
return(false);
}
string sourceDir = $"{Product}/{ProductVersion}/";
string channelDir = $"{Product}/{Channel}/";
string semaphoreBlob = $"{channelDir}publishSemaphore";
CreateBlobIfNotExists(semaphoreBlob);
AzureBlobLease blobLease = new AzureBlobLease(
AccountName,
AccountKey,
ConnectionString,
ContainerName,
semaphoreBlob,
Log);
Log.LogMessage($"Acquiring lease on semaphore blob '{semaphoreBlob}'");
blobLease.Acquire();
try
{
if (EnableVersionHint)
{
string targetVersionFile = $"{channelDir}{ProductVersion}";
// Check if this build is already finalized.
if (IsLatestSpecifiedVersion(targetVersionFile))
{
Log.LogMessage(
MessageImportance.High,
$"Version '{ProductVersion}' is already published. " +
$"Skipping finalization. Hint file: '{targetVersionFile}'");
return(true);
}
// Delete old version files.
GetBlobList(channelDir)
.Select(s => s.Replace($"/{ContainerName}/", ""))
.Where(w => VersionRegex.Replace(Path.GetFileName(w), "") == "")
.ToList()
.ForEach(f => TryDeleteBlob(f));
// Drop the version file signaling such for any race-condition builds.
CreateBlobIfNotExists(targetVersionFile);
}
CopyBlobs(sourceDir, channelDir);
// Generate the latest version text file
string versionText =
$"{Commit}{Environment.NewLine}" +
$"{ProductVersion}{Environment.NewLine}";
if (LatestVersionFilenames?.Any() != true)
{
LatestVersionFilenames = DefaultLatestVersionFilenames;
}
foreach (string latestFilename in LatestVersionFilenames)
{
PublishStringToBlob(
ContainerName,
$"{channelDir}{latestFilename}",
versionText,
"text/plain");
}
}
finally
{
Log.LogMessage($"Releasing lease on semaphore blob '{semaphoreBlob}'");
blobLease.Release();
}
return(!Log.HasLoggedErrors);
}