public async Task <bool> VerifyResourceExists(UserContentType contentType, Guid contentGuid)
{
//Container name format is {contentType}s.
CloudBlobContainer container = BlobClient.GetContainerReference($"{contentType.ToString()}s");
SharedAccessBlobPolicy sasConstraints = new SharedAccessBlobPolicy();
sasConstraints.SharedAccessExpiryTime = DateTime.UtcNow.AddMinutes(30);
sasConstraints.Permissions = SharedAccessBlobPermissions.Read; //download or retrievial should be READ ONLY.
return(await container.GetBlockBlobReference($"{contentGuid.ToString()}.bin")
.ExistsAsync());
}
public async Task <string> BuildRetrivalUrl(UserContentType contentType, Guid key)
{
//Container name format is {contentType}s.
CloudBlobContainer container = BlobClient.GetContainerReference($"{contentType.ToString().ToLower()}s");
SharedAccessBlobPolicy sasConstraints = new SharedAccessBlobPolicy();
sasConstraints.SharedAccessExpiryTime = DateTime.UtcNow.AddMinutes(30);
sasConstraints.Permissions = SharedAccessBlobPermissions.Read; //download or retrievial should be READ ONLY.
ICloudBlob blob = await container.GetBlobReferenceFromServerAsync($"{key.ToString()}.bin");
return(new Uri(blob.Uri, blob.GetSharedAccessSignature(sasConstraints)).ToString());
}
public async Task <string> BuildUploadUrl(UserContentType contentType, Guid key)
{
//Container name format is {contentType}s.
CloudBlobContainer container = BlobClient.GetContainerReference($"{contentType.ToString().ToLower()}s");
SharedAccessBlobPolicy sasConstraints = new SharedAccessBlobPolicy();
sasConstraints.SharedAccessExpiryTime = DateTime.UtcNow.AddMinutes(30);
sasConstraints.Permissions = SharedAccessBlobPermissions.Write | SharedAccessBlobPermissions.Create;
ICloudBlob blob = container.GetBlockBlobReference($"{key.ToString()}.bin");
return(new Uri(blob.Uri, blob.GetSharedAccessSignature(sasConstraints)).ToString());
}