public async Task <ReminderEntry> ReadRow(GrainReference grainRef, string reminderName)
{
try
{
var response = await ExecuteWithRetries(async() =>
{
var pk = new PartitionKey(ReminderEntity.ConstructPartitionKey(this._serviceId, grainRef));
ItemResponse <ReminderEntity> response = null;
try
{
response = await this._container.ReadItemAsync <ReminderEntity>(
ReminderEntity.ConstructId(grainRef, reminderName), pk);
}
catch (CosmosException ce) when(ce.StatusCode == HttpStatusCode.NotFound)
{
return(null);
}
return(response.Resource);
}).ConfigureAwait(false);
return(response != null?this.FromEntity(response) : null);
}
catch (Exception exc)
{
this._logger.LogError(exc, $"Failure reading reminder {reminderName} for service {this._serviceId} and grain {grainRef.ToKeyString()}.");
throw;
}
}
public async Task <bool> RemoveRow(GrainReference grainRef, string reminderName, string eTag)
{
try
{
var response = await ExecuteWithRetries(() =>
{
var pk = new PartitionKey(ReminderEntity.ConstructPartitionKey(this._serviceId, grainRef));
return(this._container.DeleteItemAsync <ReminderEntity>(
ReminderEntity.ConstructId(grainRef, reminderName),
pk,
new ItemRequestOptions {
IfMatchEtag = eTag
}
));
}).ConfigureAwait(false);
return(true);
}
catch (CosmosException dce) when(dce.StatusCode == HttpStatusCode.PreconditionFailed)
{
return(false);
}
catch (Exception exc)
{
this._logger.LogError(exc, $"Failure removing reminders for Service {this._serviceId} with grainId {grainRef.ToKeyString()} and name {reminderName}.");
throw;
}
}
private ReminderEntity ToEntity(ReminderEntry entry)
{
return(new ReminderEntity
{
Id = ReminderEntity.ConstructId(entry.GrainRef, entry.ReminderName),
PartitionKey = ReminderEntity.ConstructPartitionKey(this._serviceId, entry.GrainRef),
ServiceId = this._serviceId,
GrainHash = entry.GrainRef.GetUniformHashCode(),
GrainId = entry.GrainRef.ToKeyString(),
Name = entry.ReminderName,
StartAt = entry.StartAt,
Period = entry.Period
});
}
