/// <summary>
/// Start this service
/// </summary>
public void Start()
{
if (this.IsRunning)
{
throw new InvalidOperationException("Already running");
}
else if (this.m_endpoints.Count == 0)
{
throw new InvalidOperationException($"Service {this.Name} has 0 endpoints");
}
this.IsRunning = true;
try
{
this.m_traceSource.TraceInformation("Starting RestService {0}", this.Name);
var dispatcher = new ServiceDispatcher(this);
foreach (var bhvr in this.m_serviceBehaviors)
{
bhvr.ApplyServiceBehavior(this, dispatcher);
}
// Apply behaviors
foreach (var ep in this.Endpoints)
{
foreach (var bhvr in ep.Behaviors)
{
bhvr.ApplyEndpointBehavior(ep, ep.Dispatcher);
}
foreach (var op in ep.Operations)
{
foreach (var bhvr in op.Description.Behaviors)
{
bhvr.ApplyOperationBehavior(op, op.Dispatcher);
}
}
ep.Binding.AttachEndpoint(dispatcher, ep);
}
}
catch
{
this.IsRunning = false;
throw;
}
}
/// <summary>
/// Dispatch the HttpRequest message to the appropriate service
/// </summary>
internal bool Dispatch(ServiceDispatcher serviceDispatcher, RestRequestMessage requestMessage, RestResponseMessage responseMessage)
{
// Allow message inspectors to inspect the message before next stage
try
{
this.m_traceSource.TraceEvent(TraceEventType.Verbose, 0, "Begin endpoint dispatch of {0} {1} > {2}", requestMessage.Method, requestMessage.Url, this.m_serviceEndpoint.Description.Contract);
foreach (var mfi in this.m_messageInspector)
{
mfi.AfterReceiveRequest(requestMessage);
}
var ops = this.m_serviceEndpoint.Operations.Where(o => o.Dispatcher.CanDispatch(requestMessage));
if (ops.Count() == 0)
{
throw new FaultException(404, $"Resource not Found - {requestMessage.Url.AbsolutePath}");
}
var op = ops.FirstOrDefault(o => requestMessage.Method.ToLowerInvariant() == o.Description.Method.ToLowerInvariant());
if (op == null)
{
throw new FaultException(405, "Method not permitted");
}
RestOperationContext.Current.EndpointOperation = op;
op.Dispatcher.Dispatch(serviceDispatcher, requestMessage, responseMessage);
// Allow message inspectors to inspect before sending response
foreach (var mfi in this.m_messageInspector)
{
mfi.BeforeSendResponse(responseMessage);
}
return(true);
}
catch (Exception e)
{
this.m_traceSource.TraceEvent(TraceEventType.Error, e.HResult, e.ToString());
return(serviceDispatcher.HandleFault(e, responseMessage));
}
}
/// <summary>
/// Dispatch the message
/// </summary>
internal bool Dispatch(ServiceDispatcher serviceDispatcher, RestRequestMessage requestMessage, RestResponseMessage responseMessage)
{
try
{
this.m_traceSource.TraceEvent(TraceEventType.Verbose, 0, "Begin operation dispatch of {0} {1} to {2}", requestMessage.Method, requestMessage.Url, this.m_endpointOperation.Description.InvokeMethod);
foreach (var pol in this.m_operationPolicies)
{
pol.Apply(this.m_endpointOperation, requestMessage);
}
var invoke = this.m_endpointOperation.Description.InvokeMethod;
var parameters = new object[invoke.GetParameters().Length];
// By default parameters are passed by name
var parmMatch = this.m_dispatchRegex.Match(requestMessage.OperationPath);
for (int i = 0; i < this.m_regexGroupNames.Length; i++)
{
var pindex = Array.FindIndex(invoke.GetParameters(), o => $"{{{o.Name}}}" == this.m_regexGroupNames[i]);
var sparm = invoke.GetParameters()[pindex];
object sval = parmMatch.Groups[i + 1].Value;
if (sparm.ParameterType == typeof(int))
{
sval = Int32.Parse(sval.ToString());
}
else if (sparm.ParameterType == typeof(Guid))
{
sval = Guid.Parse(sval.ToString());
}
parameters[pindex] = sval;
}
this.DispatchFormatter.DeserializeRequest(this.m_endpointOperation, requestMessage, parameters);
this.m_traceSource.TraceData(TraceEventType.Verbose, 0, parameters);
// Validate parameters
if (!Enumerable.Range(0, invoke.GetParameters().Length).All(o => parameters[o] == null || invoke.GetParameters()[o].ParameterType.IsAssignableFrom(parameters[o]?.GetType())))
{
throw new FaultException(400, "Bad Request");
}
// Gather instance
object instance = serviceDispatcher.Service.Instance;
if (serviceDispatcher.Service.InstanceMode == Attributes.ServiceInstanceMode.PerCall)
{
instance = Activator.CreateInstance(serviceDispatcher.Service.BehaviorType);
}
object result = invoke.Invoke(instance, parameters);
// Does the invoke override content-type?
var format = invoke.ReturnParameter.GetCustomAttribute <MessageFormatAttribute>()?.MessageFormat;
if (format.HasValue)
{
responseMessage.Format = format.Value;
}
if (result == null && responseMessage.StatusCode == 0)
{
responseMessage.StatusCode = 204;
}
else
{
this.DispatchFormatter.SerializeResponse(responseMessage, parameters, result);
}
parameters = null;
return(true);
}
catch (TargetInvocationException e)
{
this.m_traceSource.TraceEvent(TraceEventType.Error, 0, e.ToString());
return(serviceDispatcher.HandleFault(e.InnerException, responseMessage));
}
catch (Exception e)
{
this.m_traceSource.TraceEvent(TraceEventType.Error, e.HResult, e.ToString());
return(serviceDispatcher.HandleFault(e, responseMessage));
}
}
