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IFlowRepository aangepast. abstracter en simpeler

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This commit is contained in:
Menno van Lavieren 2017-07-27 15:55:37 +02:00
parent 580a4716c0
commit 66e9f90187
8 changed files with 47 additions and 68 deletions
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2
Tapeti.Flow.SQL/ConfigExtensions.cs
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@ -30,7 +30,7 @@ namespace Tapeti.Flow.SQL
public void RegisterDefaults(IDependencyContainer container)
{
container.RegisterDefault<IFlowRepository>(() => new SqlConnectionFlowRepository(connectionString, serviceId, schema));
container.RegisterDefault<IFlowRepository<Default.FlowState>>(() => new SqlConnectionFlowRepository<Default.FlowState>(connectionString, serviceId, schema));
}

77
Tapeti.Flow.SQL/SqlConnectionFlowRepository.cs
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@ -3,7 +3,9 @@ using System.Collections.Generic;
using System.Data;
using System.Data.SqlClient;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Newtonsoft.Json;
namespace Tapeti.Flow.SQL
{
@ -11,30 +13,18 @@ namespace Tapeti.Flow.SQL
Assumes the following table layout (schema configurable):
create table dbo.Flow
create table shared.Flow
(
FlowID uniqueidentifier not null,
ServiceID int not null,
CreationTime datetime2(3) not null,
Metadata nvarchar(max) null,
Flowdata nvarchar(max) null,
constraint PK_Flow primary key clustered (FlowID)
);
create table dbo.FlowContinuation
(
FlowID uniqueidentifier not null,
ContinuationID uniqueidentifier not null,
Metadata nvarchar(max) null,
constraint PK_FlowContinuation primary key clustered (FlowID, ContinuationID)
);
go;
alter table shared.FlowContinuation with check add constraint FK_FlowContinuation_Flow foreign key (FlowID) references shared.Flow (FlowID);
*/
public class SqlConnectionFlowRepository : IFlowRepository
public class SqlConnectionFlowRepository<T> : IFlowRepository<T>
{
private readonly string connectionString;
private readonly int serviceId;
@ -49,65 +39,44 @@ namespace Tapeti.Flow.SQL
}
public async Task<IQueryable<FlowStateRecord>> GetStates()
public async Task<List<KeyValuePair<Guid, T>>> GetStates()
{
var result = new List<FlowStateRecord>();
using (var connection = await GetConnection())
{
var flowQuery = new SqlCommand($"select FlowID, Metadata, Flowdata from {schema}.Flow " +
var flowQuery = new SqlCommand($"select FlowID, StateJson from {schema}.Flow " +
"where ServiceID = @ServiceID " +
"order by FlowID", connection);
var flowServiceParam = flowQuery.Parameters.Add("@ServiceID", SqlDbType.Int);
var continuationQuery = new SqlCommand($"select FlowID, ContinuationID, Metadata from {schema}.FlowContinuation " +
"where ServiceID = @ServiceID " +
"order by FlowID", connection);
var continuationQueryParam = flowQuery.Parameters.Add("@ServiceID", SqlDbType.Int);
flowServiceParam.Value = serviceId;
continuationQueryParam.Value = serviceId;
var flowReader = await flowQuery.ExecuteReaderAsync();
var continuationReader = await continuationQuery.ExecuteReaderAsync();
var hasContinuation = await continuationReader.ReadAsync();
var result = new List<KeyValuePair<Guid, T>>();
while (await flowReader.ReadAsync())
{
var flowStateRecord = new FlowStateRecord
var flowID = flowReader.GetGuid(0);
var stateJson = flowReader.GetString(1);
var state = JsonConvert.DeserializeObject<T>(stateJson);
result.Add(new KeyValuePair<Guid, T>(flowID, state));
}
return result;
}
}
public Task CreateState(Guid flowID, T state, DateTime timestamp)
{
FlowID = flowReader.GetGuid(0),
Metadata = flowReader.GetString(1),
Data = flowReader.GetString(2),
ContinuationMetadata = new Dictionary<Guid, string>()
};
var stateJason = JsonConvert.SerializeObject(state);
while (hasContinuation && continuationReader.GetGuid(0) == flowStateRecord.FlowID)
{
flowStateRecord.ContinuationMetadata.Add(
continuationReader.GetGuid(1),
continuationReader.GetString(2)
);
hasContinuation = await continuationReader.ReadAsync();
}
result.Add(flowStateRecord);
}
}
return result.AsQueryable();
}
public Task CreateState(FlowStateRecord stateRecord, DateTime timestamp)
{
throw new NotImplementedException();
}
public Task UpdateState(FlowStateRecord stateRecord)
public Task UpdateState(Guid flowID, T state)
{
throw new NotImplementedException();
}

7
Tapeti.Flow.SQL/Tapeti.Flow.SQL.csproj
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@ -33,6 +33,10 @@
<WarningLevel>4</WarningLevel>
</PropertyGroup>
<ItemGroup>
<Reference Include="Newtonsoft.Json, Version=10.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed, processorArchitecture=MSIL">
<HintPath>..\packages\Newtonsoft.Json.10.0.3\lib\net45\Newtonsoft.Json.dll</HintPath>
<Private>True</Private>
</Reference>
<Reference Include="System" />
<Reference Include="System.Core" />
<Reference Include="System.Xml.Linq" />
@ -57,6 +61,9 @@
<Name>Tapeti</Name>
</ProjectReference>
</ItemGroup>
<ItemGroup>
<None Include="packages.config" />
</ItemGroup>
<Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
<!-- To modify your build process, add your task inside one of the targets below and uncomment it.
Other similar extension points exist, see Microsoft.Common.targets.

4
Tapeti.Flow.SQL/packages.config Normal file
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@ -0,0 +1,4 @@
<?xml version="1.0" encoding="utf-8"?>
<packages>
<package id="Newtonsoft.Json" version="10.0.3" targetFramework="net461" />
</packages>

15
Tapeti.Flow/Default/FlowStore.cs
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@ -13,10 +13,10 @@ namespace Tapeti.Flow.Default
private static readonly ConcurrentDictionary<Guid, FlowState> FlowStates = new ConcurrentDictionary<Guid, FlowState>();
private static readonly ConcurrentDictionary<Guid, Guid> ContinuationLookup = new ConcurrentDictionary<Guid, Guid>();
private readonly IFlowRepository repository;
private readonly IFlowRepository<FlowState> repository;
public FlowStore(IFlowRepository repository)
public FlowStore(IFlowRepository<FlowState> repository)
{
this.repository = repository;
}
@ -29,11 +29,10 @@ namespace Tapeti.Flow.Default
foreach (var flowStateRecord in await repository.GetStates())
{
var flowState = ToFlowState(flowStateRecord);
FlowStates.GetOrAdd(flowStateRecord.FlowID, flowState);
FlowStates.TryAdd(flowStateRecord.Key, flowStateRecord.Value);
foreach (var continuation in flowStateRecord.ContinuationMetadata)
ContinuationLookup.GetOrAdd(continuation.Key, flowStateRecord.FlowID);
foreach (var continuation in flowStateRecord.Value.Continuations)
ContinuationLookup.GetOrAdd(continuation.Key, flowStateRecord.Key);
}
}
@ -139,11 +138,11 @@ namespace Tapeti.Flow.Default
{
isNew = false;
var now = DateTime.UtcNow;
await owner.repository.CreateState(ToFlowStateRecord(flowID, flowState), now);
await owner.repository.CreateState(flowID, flowState, now);
}
else
{
await owner.repository.UpdateState(ToFlowStateRecord(flowID, flowState));
await owner.repository.UpdateState(flowID, flowState);
}
}

10
Tapeti.Flow/Default/NonPersistentFlowRepository.cs
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@ -5,19 +5,19 @@ using System.Threading.Tasks;
namespace Tapeti.Flow.Default
{
public class NonPersistentFlowRepository : IFlowRepository
public class NonPersistentFlowRepository<T> : IFlowRepository<T>
{
public Task<IQueryable<FlowStateRecord>> GetStates()
Task<List<KeyValuePair<Guid, T>>> IFlowRepository<T>.GetStates()
{
return Task.FromResult(new List<FlowStateRecord>().AsQueryable());
return Task.FromResult(new List<KeyValuePair<Guid, T>>());
}
public Task CreateState(FlowStateRecord stateRecord, DateTime timestamp)
public Task CreateState(Guid flowID, T state, DateTime timestamp)
{
return Task.CompletedTask;
}
public Task UpdateState(FlowStateRecord stateRecord)
public Task UpdateState(Guid flowID, T state)
{
return Task.CompletedTask;
}

2
Tapeti.Flow/FlowMiddleware.cs
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@ -11,7 +11,7 @@ namespace Tapeti.Flow
container.RegisterDefault<IFlowProvider, FlowProvider>();
container.RegisterDefault<IFlowStarter, FlowStarter>();
container.RegisterDefault<IFlowHandler, FlowProvider>();
container.RegisterDefault<IFlowRepository, NonPersistentFlowRepository>();
container.RegisterDefault<IFlowRepository<FlowState>, NonPersistentFlowRepository<FlowState>>();
container.RegisterDefault<IFlowStore, FlowStore>();
}

8
Tapeti.Flow/IFlowRepository.cs
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@ -5,11 +5,11 @@ using System.Threading.Tasks;
namespace Tapeti.Flow
{
public interface IFlowRepository
public interface IFlowRepository<T>
{
Task<IQueryable<FlowStateRecord>> GetStates();
Task CreateState(FlowStateRecord stateRecord, DateTime timestamp);
Task UpdateState(FlowStateRecord stateRecord);
Task<List<KeyValuePair<Guid, T>>> GetStates();
Task CreateState(Guid flowID, T state, DateTime timestamp);
Task UpdateState(Guid flowID, T state);
Task DeleteState(Guid flowID);
}