public async Task <IList <Uri> > GetGateways()
{
var expressionValues = new Dictionary <string, AttributeValue>
{
{ $":{SiloInstanceRecord.DEPLOYMENT_ID_PROPERTY_NAME}", new AttributeValue(this.clusterId) },
{ $":{SiloInstanceRecord.STATUS_PROPERTY_NAME}", new AttributeValue {
N = INSTANCE_STATUS_ACTIVE
} },
{ $":{SiloInstanceRecord.PROXY_PORT_PROPERTY_NAME}", new AttributeValue {
N = "0"
} }
};
var expression =
$"{SiloInstanceRecord.DEPLOYMENT_ID_PROPERTY_NAME} = :{SiloInstanceRecord.DEPLOYMENT_ID_PROPERTY_NAME} " +
$"AND {SiloInstanceRecord.STATUS_PROPERTY_NAME} = :{SiloInstanceRecord.STATUS_PROPERTY_NAME} " +
$"AND {SiloInstanceRecord.PROXY_PORT_PROPERTY_NAME} > :{SiloInstanceRecord.PROXY_PORT_PROPERTY_NAME}";
var records = await storage.ScanAsync <Uri>(this.options.TableName, expressionValues,
expression, gateway =>
{
return(SiloAddress.New(
new IPEndPoint(
IPAddress.Parse(gateway[SiloInstanceRecord.ADDRESS_PROPERTY_NAME].S),
int.Parse(gateway[SiloInstanceRecord.PROXY_PORT_PROPERTY_NAME].N)),
int.Parse(gateway[SiloInstanceRecord.GENERATION_PROPERTY_NAME].N)).ToGatewayUri());
});
return(records);
}
/// <summary>
/// Read one row from the remider table
/// </summary>
/// <param name="grainRef">grain ref to locate the row </param>
/// <returns> Return the RemiderTableData if the rows were read successfully </returns>
public async Task <ReminderTableData> ReadRows(GrainReference grainRef)
{
var expressionValues = new Dictionary <string, AttributeValue>
{
{ $":{SERVICE_ID_PROPERTY_NAME}", new AttributeValue(serviceId.ToString()) },
{ $":{GRAIN_REFERENCE_PROPERTY_NAME}", new AttributeValue(grainRef.ToKeyString()) }
};
try
{
var expression = $"{SERVICE_ID_PROPERTY_NAME} = :{SERVICE_ID_PROPERTY_NAME} AND {GRAIN_REFERENCE_PROPERTY_NAME} = :{GRAIN_REFERENCE_PROPERTY_NAME}";
var records = await storage.ScanAsync(TABLE_NAME_DEFAULT_VALUE, expressionValues, expression, Resolve).ConfigureAwait(false);
return(new ReminderTableData(records));
}
catch (Exception exc)
{
logger.Warn(ErrorCode.ReminderServiceBase,
$"Intermediate error reading reminder entry {Utils.DictionaryToString(expressionValues)} from table {TABLE_NAME_DEFAULT_VALUE}.", exc);
throw;
}
}