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Stabilized switch to the ProtoBuf serialization for event persistence
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,109 @@ | ||
| using System; | ||
| using System.Collections.Generic; | ||
| using System.IO; | ||
| using System.Runtime.Serialization; | ||
| using Lokad.Cqrs; | ||
| using Lokad.Cqrs.Core.Serialization; | ||
| using ProtoBuf.Meta; | ||
| using System.Linq; | ||
|
|
||
| namespace FarleyFile | ||
| { | ||
| /// <summary> | ||
| /// Copied from Lokad.CQRS | ||
| /// </summary> | ||
| public class DataSerializerWithProtoBuf : IDataSerializer | ||
| { | ||
| readonly IDictionary<string, Type> _contract2Type = new Dictionary<string, Type>(); | ||
| readonly IDictionary<Type, string> _type2Contract = new Dictionary<Type, string>(); | ||
| readonly IDictionary<Type, IFormatter> _type2Formatter = new Dictionary<Type, IFormatter>(); | ||
|
|
||
| public DataSerializerWithProtoBuf(ICollection<Type> knownTypes) | ||
| { | ||
| if (knownTypes.Count == 0) | ||
| throw new InvalidOperationException( | ||
| "ProtoBuf requires some known types to serialize. Have you forgot to supply them?"); | ||
|
|
||
|
|
||
| InitIdentityTree(); | ||
|
|
||
| foreach (var type in knownTypes) | ||
| { | ||
| var reference = ContractEvil.GetContractReference(type); | ||
| var formatter = RuntimeTypeModel.Default.CreateFormatter(type); | ||
|
|
||
| try | ||
| { | ||
| _contract2Type.Add(reference, type); | ||
| } | ||
| catch (ArgumentException e) | ||
| { | ||
| var msg = string.Format("Duplicate contract '{0}' being added to ProtoBuf dictionary", reference); | ||
| throw new InvalidOperationException(msg, e); | ||
| } | ||
| try | ||
| { | ||
| _type2Contract.Add(type, reference); | ||
| _type2Formatter.Add(type, formatter); | ||
| } | ||
| catch (ArgumentException e) | ||
| { | ||
| var msg = string.Format("Duplicate type '{0}' being added to ProtoBuf dictionary", type); | ||
| throw new InvalidOperationException(msg, e); | ||
| } | ||
| } | ||
| } | ||
|
|
||
| public void Serialize(object instance, Stream destination) | ||
| { | ||
| IFormatter formatter; | ||
| if (!_type2Formatter.TryGetValue(instance.GetType(), out formatter)) | ||
| { | ||
| var s = | ||
| string.Format( | ||
| "Can't find serializer for unknown object type '{0}'. Have you passed all known types to the constructor?", | ||
| instance.GetType()); | ||
| throw new InvalidOperationException(s); | ||
| } | ||
| formatter.Serialize(destination, instance); | ||
| } | ||
|
|
||
| public object Deserialize(Stream source, Type type) | ||
| { | ||
| IFormatter value; | ||
| if (!_type2Formatter.TryGetValue(type, out value)) | ||
| { | ||
| var s = | ||
| string.Format( | ||
| "Can't find serializer for unknown object type '{0}'. Have you passed all known types to the constructor?", | ||
| type); | ||
| throw new InvalidOperationException(s); | ||
| } | ||
| return value.Deserialize(source); | ||
| } | ||
| public bool TryGetContractNameByType(Type messageType, out string contractName) | ||
| { | ||
| return _type2Contract.TryGetValue(messageType, out contractName); | ||
| } | ||
|
|
||
| public bool TryGetContractTypeByName(string contractName, out Type contractType) | ||
| { | ||
| return _contract2Type.TryGetValue(contractName, out contractType); | ||
| } | ||
|
|
||
| static void InitIdentityTree() | ||
| { | ||
| RuntimeTypeModel.Default[typeof(DateTimeOffset)].Add("m_dateTime", "m_offsetMinutes"); | ||
|
|
||
| var id = typeof(Identity); | ||
| var derived = id.Assembly.GetExportedTypes() | ||
| .Where(id.IsAssignableFrom) | ||
| .Where(t => t != id); | ||
| int i = 4; | ||
| foreach (var d in derived) | ||
| { | ||
| RuntimeTypeModel.Default[id].AddSubType(i++, d); | ||
| } | ||
| } | ||
| } | ||
| } |
20 changes: 20 additions & 0 deletions
20
FarleyFile.Desktop/Wires/EnvelopeSerializerWithProtoBuf.cs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,20 @@ | ||
| using System.IO; | ||
| using Lokad.Cqrs; | ||
| using Lokad.Cqrs.Core.Envelope; | ||
| using ProtoBuf; | ||
|
|
||
| namespace FarleyFile | ||
| { | ||
| public sealed class EnvelopeSerializerWithProtoBuf : IEnvelopeSerializer | ||
| { | ||
| public void SerializeEnvelope(Stream stream, EnvelopeContract contract) | ||
| { | ||
| Serializer.Serialize(stream, contract); | ||
| } | ||
|
|
||
| public EnvelopeContract DeserializeEnvelope(Stream stream) | ||
| { | ||
| return Serializer.Deserialize<EnvelopeContract>(stream); | ||
| } | ||
| } | ||
| } |
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