public static async Task <ISleetFileSystemLock> VerifyInitAndLock(LocalSettings settings, ISleetFileSystem fileSystem, string lockMessage, ILogger log, CancellationToken token)
{
ISleetFileSystemLock feedLock = null;
ValidateFileSystem(fileSystem);
try
{
// Validate source
var exists = await fileSystem.Validate(log, token);
if (!exists)
{
throw new InvalidOperationException($"Unable to use feed.");
}
var timer = Stopwatch.StartNew();
feedLock = fileSystem.CreateLock(log);
// Use the message from settings as an override if it exists.
var lockInfoMessage = string.IsNullOrEmpty(settings.FeedLockMessage) ? lockMessage : settings.FeedLockMessage;
// Get lock
var isLocked = await feedLock.GetLock(settings.FeedLockTimeout, lockInfoMessage, token);
if (!isLocked)
{
throw new InvalidOperationException("Unable to obtain a lock on the feed.");
}
// Log perf
timer.Stop();
fileSystem.LocalCache.PerfTracker.Add(new PerfSummaryEntry(timer.Elapsed, "Obtained feed lock in {0}", TimeSpan.FromSeconds(30)));
var indexPath = fileSystem.Get("index.json");
if (!await indexPath.ExistsWithFetch(log, token))
{
throw new InvalidOperationException($"{fileSystem.BaseURI} is missing sleet files. Use 'sleet.exe init' to create a new feed.");
}
}
catch
{
if (feedLock != null)
{
feedLock.Release();
}
throw;
}
return(feedLock);
}
/// <summary>
/// Ensure a feed is initialized. If the feed is not initialized it can be automatically created and initialized.
/// Feeds that are not in a vaild state will fail, these must be manually fixed to avoid losing data.
/// </summary>
/// <param name="lockMessage">Optional message to display when the feed is locked.</param>
/// <param name="autoCreateBucket">Automatically create the folder/container/bucket without files.</param>
/// <param name="autoInit">Automatically initialize the files in the feed.</param>
public static async Task <ISleetFileSystemLock> InitAndLock(LocalSettings settings, ISleetFileSystem fileSystem, string lockMessage, bool autoCreateBucket, bool autoInit, ILogger log, CancellationToken token)
{
ISleetFileSystemLock feedLock = null;
// Validate URI path
ValidateFileSystem(fileSystem);
// Create the bucket if allowed or throw.
await EnsureBucketOrThrow(fileSystem, autoCreateBucket, log, token);
try
{
var timer = Stopwatch.StartNew();
feedLock = fileSystem.CreateLock(log);
// Use the message from settings as an override if it exists.
var lockInfoMessage = string.IsNullOrEmpty(settings.FeedLockMessage) ? lockMessage : settings.FeedLockMessage;
// Get lock
var isLocked = await feedLock.GetLock(settings.FeedLockTimeout, lockInfoMessage, token);
if (!isLocked)
{
throw new InvalidOperationException("Unable to obtain a lock on the feed.");
}
// Log perf
timer.Stop();
fileSystem.LocalCache.PerfTracker.Add(new PerfSummaryEntry(timer.Elapsed, "Obtained feed lock in {0}", TimeSpan.FromSeconds(30)));
// Reset the file system to avoid using files retrieved before the lock, this would be unsafe
fileSystem.Reset();
await EnsureFeedIndexOrThrow(settings, fileSystem, autoInit, log, token);
}
catch
{
if (feedLock != null)
{
feedLock.Release();
}
throw;
}
return(feedLock);
}
public static async Task <ISleetFileSystemLock> VerifyInitAndLock(LocalSettings settings, ISleetFileSystem fileSystem, ILogger log, CancellationToken token)
{
ISleetFileSystemLock feedLock = null;
ValidateFileSystem(fileSystem);
try
{
// Validate source
var exists = await fileSystem.Validate(log, token);
if (!exists)
{
throw new InvalidOperationException($"Unable to use feed.");
}
feedLock = fileSystem.CreateLock(log);
var isLocked = await feedLock.GetLock(settings.FeedLockTimeout, token);
if (!isLocked)
{
throw new InvalidOperationException("Unable to obtain a lock on the feed.");
}
var indexPath = fileSystem.Get("index.json");
if (!await indexPath.ExistsWithFetch(log, token))
{
throw new InvalidOperationException($"{fileSystem.BaseURI} is missing sleet files. Use 'sleet.exe init' to create a new feed.");
}
}
catch
{
if (feedLock != null)
{
feedLock.Release();
}
throw;
}
return(feedLock);
}