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AWS DynamoDB Membership Provider #2008

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Aug 15, 2016
Merged

AWS DynamoDB Membership Provider #2008

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aa015a7
AWS DynamoDB Membership Provider
galvesribeiro Aug 14, 2016
25aae2f
Changes to address feedback.
galvesribeiro Aug 14, 2016
6f5ae6c
Fixes on tests
galvesribeiro Aug 15, 2016
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8 changes: 4 additions & 4 deletions src/Orleans.sln
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Expand Up @@ -312,14 +312,14 @@ Global
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{B99C744A-7F62-430C-9255-E64875D39486}.Release|Any CPU.Build.0 = Release|Any CPU
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{67738E6C-F292-46A2-994D-5B52E745205B}.Debug|Any CPU.Build.0 = Debug|Any CPU
{67738E6C-F292-46A2-994D-5B52E745205B}.Release|Any CPU.ActiveCfg = Release|Any CPU
{67738E6C-F292-46A2-994D-5B52E745205B}.Release|Any CPU.Build.0 = Release|Any CPU
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{6AD37425-7CB4-4D23-80C3-A9D143329A66}.Debug|Any CPU.Build.0 = Debug|Any CPU
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{6AD37425-7CB4-4D23-80C3-A9D143329A66}.Release|Any CPU.Build.0 = Release|Any CPU
{67738E6C-F292-46A2-994D-5B52E745205B}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
{67738E6C-F292-46A2-994D-5B52E745205B}.Debug|Any CPU.Build.0 = Debug|Any CPU
{67738E6C-F292-46A2-994D-5B52E745205B}.Release|Any CPU.ActiveCfg = Release|Any CPU
{67738E6C-F292-46A2-994D-5B52E745205B}.Release|Any CPU.Build.0 = Release|Any CPU
EndGlobalSection
GlobalSection(SolutionProperties) = preSolution
HideSolutionNode = FALSE
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76 changes: 76 additions & 0 deletions src/OrleansAWSUtils/Membership/DynamoDBGatewayListProvider.cs
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@@ -0,0 +1,76 @@
using Amazon.DynamoDBv2;
using Amazon.DynamoDBv2.Model;
using Orleans.Messaging;
using Orleans.Runtime.Configuration;
using OrleansAWSUtils.Storage;
using System;
using System.Collections.Generic;
using System.Net;
using System.Threading.Tasks;

namespace Orleans.Runtime.MembershipService
{
internal class DynamoDBGatewayListProvider : IGatewayListProvider
{
private const string TABLE_NAME_DEFAULT_VALUE = "OrleansSiloInstances";

private DynamoDBStorage storage;
private TimeSpan gatewayListRefreshPeriod;
private string deploymentId;
private readonly string INSTANCE_STATUS_ACTIVE = ((int)SiloStatus.Active).ToString();

#region Implementation of IGatewayListProvider

public Task InitializeGatewayListProvider(ClientConfiguration conf, Logger logger)
{
gatewayListRefreshPeriod = conf.GatewayListRefreshPeriod;
deploymentId = conf.DeploymentId;

storage = new DynamoDBStorage(conf.DataConnectionString, logger);
return storage.InitializeTable(TABLE_NAME_DEFAULT_VALUE,
new List<KeySchemaElement>
{
new KeySchemaElement { AttributeName = SiloInstanceRecord.DEPLOYMENT_ID_PROPERTY_NAME, KeyType = KeyType.HASH },
new KeySchemaElement { AttributeName = SiloInstanceRecord.SILO_IDENTITY_PROPERTY_NAME, KeyType = KeyType.RANGE }
},
new List<AttributeDefinition>
{
new AttributeDefinition { AttributeName = SiloInstanceRecord.DEPLOYMENT_ID_PROPERTY_NAME, AttributeType = ScalarAttributeType.S },
new AttributeDefinition { AttributeName = SiloInstanceRecord.SILO_IDENTITY_PROPERTY_NAME, AttributeType = ScalarAttributeType.S }
});
}

public async Task<IList<Uri>> GetGateways()
{
var expressionValues = new Dictionary<string, AttributeValue>
{
{ $":{SiloInstanceRecord.DEPLOYMENT_ID_PROPERTY_NAME}", new AttributeValue(deploymentId) },
{ $":{SiloInstanceRecord.STATUS_PROPERTY_NAME}", new AttributeValue { N = INSTANCE_STATUS_ACTIVE } }
};
var expression = $"{SiloInstanceRecord.DEPLOYMENT_ID_PROPERTY_NAME} = :{SiloInstanceRecord.DEPLOYMENT_ID_PROPERTY_NAME} AND {SiloInstanceRecord.STATUS_PROPERTY_NAME} = :{SiloInstanceRecord.STATUS_PROPERTY_NAME}";
var records = await storage.ScanAsync<Uri>(TABLE_NAME_DEFAULT_VALUE, 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;
}

public TimeSpan MaxStaleness
{
get { return gatewayListRefreshPeriod; }
}

public bool IsUpdatable
{
get { return true; }
}

#endregion
}
}
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