public static IServiceCollection AddBookingPipelines(this IServiceCollection services)
{
var sp = services.BuildServiceProvider();
// Create each step of the pipeline
var mapping = new MappingStep(sp.GetRequiredService <ILogger <MappingStep> >());
var getRequest = new GetRequestStep(sp.GetRequiredService <ILogger <GetRequestStep> >());
var getResponse = new GetResponseStep(sp.GetRequiredService <ILogger <GetResponseStep> >());
var aggregate = new AggregateStep(sp.GetRequiredService <ILogger <AggregateStep> >());
var dedupe = new DedupeStep(sp.GetRequiredService <ILogger <DedupeStep> >());
// Build the pipeline using the steps, in the desired order
var searchPipeline = new Pipeline <HubRequest, HubResponse>(hubRq => hubRq
.AddStep(mapping)
// Sub-pipeline with three steps, two of them also use the input from parent
.AddStep(new Pipeline <ConnectorRequest, ConnectorResponse>(connRq => connRq
.AddStep(getRequest, hubRq)
.AddStep(getResponse, hubRq)
.AddStep(aggregate))
)
.AddStep(dedupe));
// Inject this pipeline to the service provider (it is used in the controller)
return(services.AddSingleton <IPipelineStep <HubRequest, HubResponse> >(searchPipeline));
}
public void CreateAggregate(string name, int numberOfArguments, AggregateStep step, AggregateFinal final)
{
name = name.ToUpperInvariant();
var nativeAggregateStep = new AggregateStepNative((context, numberArguments, nativeArguments) =>
{
var contextGuidPtr = this.sqlite3Provider.Sqlite3AggregateContext(context, 16);
if (contextGuidPtr != IntPtr.Zero)
{
var contextGuidBytes = new byte[16];
this.platformMarshal.Copy(contextGuidPtr, contextGuidBytes, 0, 16);
var contextGuid = new Guid(contextGuidBytes);
if (contextGuid == Guid.Empty)
{
contextGuid = Guid.NewGuid();
contextGuidBytes = contextGuid.ToByteArray();
this.platformMarshal.Copy(contextGuidBytes, contextGuidPtr, 0, 16);
}
object[] mangedArguments = ObtainManagedArguments(nativeArguments);
// TODO
if (!this.aggregateContextDataDic.ContainsKey(contextGuid))
{
this.aggregateContextDataDic[contextGuid] = new Dictionary <string, object>();
}
var aggregateContextData = this.aggregateContextDataDic[contextGuid];
try
{
step.Invoke(aggregateContextData, mangedArguments);
}
catch (Exception ex)
{
SetError(context, ex);
}
}
else
{
SetError(context, new Exception("Unable to initialize aggregate context."));
}
});
var aggregateStepDelegate = this.platformMarshal.ApplyNativeCallingConventionToAggregateStep(nativeAggregateStep);
this.aggregateStepDelegates[name] = aggregateStepDelegate;
var aggregateStepPtr = this.platformMarshal.MarshalDelegateToNativeFunctionPointer(aggregateStepDelegate);
var nativeAggregateFinal = new AggregateFinalNative((context) =>
{
IDictionary <string, object> aggregateContextData = new Dictionary <string, object>();
var contextGuidPtr = this.sqlite3Provider.Sqlite3AggregateContext(context, 0);
if (contextGuidPtr != IntPtr.Zero)
{
var contextGuidBytes = new byte[16];
this.platformMarshal.Copy(contextGuidPtr, contextGuidBytes, 0, 16);
var contextGuid = new Guid(contextGuidBytes);
aggregateContextData = this.aggregateContextDataDic[contextGuid];
}
try
{
var result = final.Invoke(aggregateContextData);
SetResult(context, result);
}
catch (Exception ex)
{
SetError(context, ex);
}
});
var aggregateFinalDelegate = this.platformMarshal.ApplyNativeCallingConventionToAggregateFinal(nativeAggregateFinal);
this.aggregateFinalDelegates[name] = aggregateFinalDelegate;
var aggregateFinalPtr = this.platformMarshal.MarshalDelegateToNativeFunctionPointer(aggregateFinalDelegate);
int nameLength;
var namePtr = this.platformMarshal.MarshalStringManagedToNativeUTF8(name, out nameLength);
try
{
this.sqlite3Provider.Sqlite3CreateAggregate(this.db, namePtr, numberOfArguments, aggregateStepPtr, aggregateFinalPtr);
}
finally
{
if (namePtr != IntPtr.Zero)
{
this.platformMarshal.CleanUpStringNativeUTF8(namePtr);
}
}
}
public void CreateAggregate(string name, int numberOfArguments, AggregateStep step, AggregateFinal final)
{
name = name.ToUpperInvariant();
var nativeAggregateStep = new AggregateStepNative((context, numberArguments, nativeArguments) =>
{
var contextGuidPtr = this.sqlite3Provider.Sqlite3AggregateContext(context, 16);
if (contextGuidPtr != IntPtr.Zero)
{
var contextGuidBytes = new byte[16];
this.platformMarshal.Copy(contextGuidPtr, contextGuidBytes, 0, 16);
var contextGuid = new Guid(contextGuidBytes);
if (contextGuid == Guid.Empty)
{
contextGuid = Guid.NewGuid();
contextGuidBytes = contextGuid.ToByteArray();
this.platformMarshal.Copy(contextGuidBytes, contextGuidPtr, 0, 16);
}
object[] mangedArguments = ObtainManagedArguments(nativeArguments);
// TODO
if (!this.aggregateContextDataDic.ContainsKey(contextGuid))
{
this.aggregateContextDataDic[contextGuid] = new Dictionary<string, object>();
}
var aggregateContextData = this.aggregateContextDataDic[contextGuid];
try
{
step.Invoke(aggregateContextData, mangedArguments);
}
catch (Exception ex)
{
SetError(context, ex);
}
}
else
{
SetError(context, new Exception("Unable to initialize aggregate context."));
}
});
var aggregateStepDelegate = this.platformMarshal.ApplyNativeCallingConventionToAggregateStep(nativeAggregateStep);
this.aggregateStepDelegates[name] = aggregateStepDelegate;
var aggregateStepPtr = this.platformMarshal.MarshalDelegateToNativeFunctionPointer(aggregateStepDelegate);
var nativeAggregateFinal = new AggregateFinalNative((context) =>
{
IDictionary<string, object> aggregateContextData = new Dictionary<string, object>();
var contextGuidPtr = this.sqlite3Provider.Sqlite3AggregateContext(context, 0);
if (contextGuidPtr != IntPtr.Zero)
{
var contextGuidBytes = new byte[16];
this.platformMarshal.Copy(contextGuidPtr, contextGuidBytes, 0, 16);
var contextGuid = new Guid(contextGuidBytes);
aggregateContextData = this.aggregateContextDataDic[contextGuid];
}
try
{
var result = final.Invoke(aggregateContextData);
SetResult(context, result);
}
catch (Exception ex)
{
SetError(context, ex);
}
});
var aggregateFinalDelegate = this.platformMarshal.ApplyNativeCallingConventionToAggregateFinal(nativeAggregateFinal);
this.aggregateFinalDelegates[name] = aggregateFinalDelegate;
var aggregateFinalPtr = this.platformMarshal.MarshalDelegateToNativeFunctionPointer(aggregateFinalDelegate);
int nameLength;
var namePtr = this.platformMarshal.MarshalStringManagedToNativeUTF8(name, out nameLength);
try
{
this.sqlite3Provider.Sqlite3CreateAggregate(this.db, namePtr, numberOfArguments, aggregateStepPtr, aggregateFinalPtr);
}
finally
{
if (namePtr != IntPtr.Zero)
{
this.platformMarshal.CleanUpStringNativeUTF8(namePtr);
}
}
}