public async Task <StorageRecord> GetAsync(string id)
{
await this.SetupStorageAsync();
try
{
this.log.Debug("Fetching record...", () => new { this.storageName, id });
var response = await this.docDb.ReadAsync(this.client, this.storageConfig, id);
this.log.Debug("Record fetched", () => new { this.storageName, id });
var record = StorageRecord.FromDocumentDb(response?.Resource);
if (record.IsExpired())
{
this.log.Debug("The resource requested has expired, deleting...", () => new { this.storageName, id });
await this.TryToDeleteExpiredRecord(id);
this.log.Debug("Expired resource deleted", () => new { this.storageName, id });
throw new ResourceNotFoundException($"The resource {id} doesn't exist.");
}
return(record);
}
catch (DocumentClientException e) when(e.StatusCode == HttpStatusCode.NotFound)
{
this.log.Debug("The resource requested doesn't exist.", () => new { this.storageName, id });
throw new ResourceNotFoundException($"The resource {id} doesn't exist.");
}
}
public async Task <bool> ExistsAsync(string id)
{
await this.SetupStorageAsync();
try
{
var response = await this.docDb.ReadAsync(this.client, this.storageConfig, id);
var record = StorageRecord.FromDocumentDb(response?.Resource);
if (record.IsExpired())
{
this.log.Info("The resource requested has expired.", () => new { this.storageName, id });
await this.TryToDeleteExpiredRecord(id);
return(false);
}
return(true);
}
catch (DocumentClientException e) when(e.StatusCode == HttpStatusCode.NotFound)
{
return(false);
}
}
public async Task <StorageRecord> CreateAsync(StorageRecord input)
{
await this.SetupStorageAsync();
try
{
var record = input.GetDocumentDbRecord();
record.Touch();
var response = await this.docDb.CreateAsync(this.client, this.storageConfig, record);
return(StorageRecord.FromDocumentDb(response?.Resource));
}
catch (DocumentClientException e) when(e.StatusCode == HttpStatusCode.Conflict)
{
this.log.Info("There is already a resource with the id specified.", () => new { this.storageName, input.Id });
throw new ConflictingResourceException($"There is already a resource with id = '{input.Id}'.");
}
}
public async Task <StorageRecord> UpsertAsync(StorageRecord input, string eTag)
{
await this.SetupStorageAsync();
try
{
var record = input.GetDocumentDbRecord();
record.Touch();
var response = await this.docDb.UpsertAsync(this.client, this.storageConfig, record, eTag);
return(StorageRecord.FromDocumentDb(response?.Resource));
}
catch (DocumentClientException e) when(e.StatusCode == HttpStatusCode.PreconditionFailed)
{
this.log.Info(
"E-Tag mismatch: the resource has been updated by another client.",
() => new { this.storageName, input.Id, input.ETag });
throw new ConflictingResourceException("E-Tag mismatch: the resource has been updated by another client.");
}
}
public async Task <StorageRecord> UpsertAsync(StorageRecord input)
{
return(await this.UpsertAsync(input, input.ETag));
}
