public string TryGetFromStore(string tag, out bool exists, TimeSpan timeout)
{
TimeoutHelper timeoutHelper = new TimeoutHelper(timeout);
ImageBuilder.TraceSource.WriteInfo(
TraceType,
"Downloading {0} from store.",
tag);
exists = false;
string value = null;
string tempFileName = ImageBuilderUtility.GetTempFileName(this.localImageBuilderRoot);
try
{
if (this.ImageStore.DoesContentExist(tag, timeoutHelper.GetRemainingTime()))
{
this.ImageStore.DownloadContent(tag, tempFileName, timeoutHelper.GetRemainingTime(), CopyFlag.AtomicCopy);
ImageBuilderUtility.RemoveReadOnlyFlag(tempFileName);
value = ImageBuilderUtility.ReadStringFromFile(tempFileName);
exists = true;
}
}
finally
{
ImageBuilderUtility.DeleteTempLocation(tempFileName);
}
return(value);
}
public async Task <T> GetFromStoreAsync <T>(string tag, TimeSpan timeout)
{
TimeoutHelper timeoutHelper = new TimeoutHelper(timeout);
ImageBuilder.TraceSource.WriteInfo(
TraceType,
"Downloading {0} from store async.",
tag);
string tempFileName = ImageBuilderUtility.GetTempFileName(this.localImageBuilderRoot);
try
{
bool doesExist = await this.ImageStore.DoesContentExistAsync(tag, timeoutHelper.GetRemainingTime());
if (doesExist)
{
await this.ImageStore.DownloadContentAsync(tag, tempFileName, timeoutHelper.GetRemainingTime(), CopyFlag.AtomicCopy);
ImageBuilderUtility.RemoveReadOnlyFlag(tempFileName);
return(ImageBuilderUtility.ReadXml <T>(tempFileName));
}
else
{
throw new FileNotFoundException(
string.Format(CultureInfo.CurrentCulture, StringResources.ImageStoreError_FileNotFound, tag));
}
}
finally
{
ImageBuilderUtility.DeleteTempLocation(tempFileName);
}
}
public async Task SetToStoreAsync <T>(string tag, T value, TimeSpan timeout, bool shouldOverwrite = true)
{
TimeoutHelper timeoutHelper = new TimeoutHelper(timeout);
ImageBuilder.TraceSource.WriteInfo(
TraceType,
"Uploading {0} to store. ShouldOverwrite: {1}.",
tag,
shouldOverwrite);
if (!shouldOverwrite &&
await this.ImageStore.DoesContentExistAsync(tag, timeoutHelper.GetRemainingTime()))
{
return;
}
string tempFileName = ImageBuilderUtility.GetTempFileName(this.localImageBuilderRoot);
try
{
ImageBuilderUtility.WriteXml <T>(tempFileName, value);
await this.ImageStore.UploadContentAsync(tag, tempFileName, timeoutHelper.GetRemainingTime(), CopyFlag.AtomicCopy, false /*acquireSourceLock*/);
}
finally
{
ImageBuilderUtility.DeleteTempLocation(tempFileName);
}
}
public async Task <Tuple <T, bool> > TryGetFromStoreAsync <T>(string tag, TimeSpan timeout)
{
TimeoutHelper timeoutHelper = new TimeoutHelper(timeout);
ImageBuilder.TraceSource.WriteInfo(
TraceType,
"Downloading {0} from store.",
tag);
bool exists = false;
T value = default(T);
string tempFileName = ImageBuilderUtility.GetTempFileName(this.localImageBuilderRoot);
try
{
if (await this.ImageStore.DoesContentExistAsync(tag, timeoutHelper.GetRemainingTime()))
{
await this.ImageStore.DownloadContentAsync(tag, tempFileName, timeoutHelper.GetRemainingTime(), CopyFlag.AtomicCopy);
ImageBuilderUtility.RemoveReadOnlyFlag(tempFileName);
value = ImageBuilderUtility.ReadXml <T>(tempFileName);
exists = true;
}
}
finally
{
ImageBuilderUtility.DeleteTempLocation(tempFileName);
}
return(new Tuple <T, bool>(value, exists));
}
