/// <summary>
/// Create channel factory from service config db
/// </summary>
/// <typeparam name="T">The service contract</typeparam>
/// <returns>The built channel factory</returns>
private static ChannelFactory <T> CreateChannelFactory <T>()
{
var config = ServiceConfigurationStore.GetClientConfiguration(typeof(T));
if (config != null)
{
string[] baseAddresses = null;
if (!string.IsNullOrEmpty(config.HostXML))
{
var hostElement = new HostElement();
hostElement.DeserializeElement(config.HostXML);
baseAddresses = WcfServiceHelper.GetBaseAddressesFromHostElement(hostElement);
}
if (config.Endpoint != null)
{
var binding = WcfServiceHelper.GetBinding(config.Endpoint);
if (binding != null)
{
var address = WcfServiceHelper.BuildEndpointAddress(config.Endpoint, baseAddresses);
address = string.Format(address, config.Endpoint.FarmAddress);
var cf = new ChannelFactory <T>(binding, address);
WcfServiceHelper.ApplyEndpointBehaviorConfiguration(cf.Endpoint, config.Endpoint);
return(cf);
}
}
else
{
throw new ConfigurationErrorsException("Could not find any endpoint for specified service contract - " + typeof(T).GetQualifiedTypeName());
}
}
return(null);
}
/// <summary>
/// Build base addresses from endpoints
/// </summary>
/// <param name="baseAddresses">The baseAddresses passed in from outside</param>
/// <param name="config">The service configuration</param>
/// <returns>The base addresses</returns>
protected virtual Uri[] BuildBaseAddresses(Uri[] baseAddresses, ServiceConfiguration config)
{
if (config == null)
{
throw new ArgumentNullException("config");
}
var list = new List <Uri>();
foreach (var endpoint in config.Endpoints)
{
var address = WcfServiceHelper.BuildEndpointAddress(endpoint, baseAddresses);
address = string.Format(address, Environment.MachineName.ToLowerInvariant());
var uri = new Uri(address);
if (!list.Contains(uri))
{
list.Add(uri);
}
}
return(list.ToArray());
}
/// <summary>
/// Create service host
/// </summary>
/// <param name="serviceType">The service implementation type</param>
/// <param name="baseAddresses">
/// The baseAddress are always ignored because we could get the
/// addresses from the endpoint config
/// </param>
/// <returns></returns>
protected override ServiceHost CreateServiceHost(Type serviceType, Uri[] baseAddresses)
{
if (serviceType == null)
{
throw new ArgumentNullException("serviceType");
}
var config = ServiceConfigurationStore.GetServiceConfiguration(serviceType.GetQualifiedTypeName());
HostElement hostElement = null;
if (!string.IsNullOrEmpty(config.HostXML))
{
hostElement = new HostElement();
hostElement.DeserializeElement(config.HostXML);
if (baseAddresses == null || baseAddresses.Length == 0)
{
var baseAddressTemplates = WcfServiceHelper.GetBaseAddressesFromHostElement(hostElement);
if (baseAddressTemplates != null && baseAddressTemplates.Length > 0)
{
baseAddresses = new Uri[baseAddressTemplates.Length];
for (var i = 0; i < baseAddressTemplates.Length; ++i)
{
baseAddresses[i] = new Uri(string.Format(baseAddressTemplates[i], Environment.MachineName.ToLowerInvariant()));
}
}
}
}
if (baseAddresses == null || baseAddresses.Length == 0)
{
baseAddresses = GetBaseAddressesFromEndpoints(config.Endpoints);
}
object singleton;
var serviceImplType = ServiceManager.GetServiceImplementationType(serviceType, out singleton);
var serviceHost = GetServiceHost(config, serviceImplType, singleton, baseAddresses);
ApplyServiceHostConfiguration(serviceHost, hostElement);
ApplyServiceBehaviorConfiguration(serviceHost, config);
var bindingCache = new Dictionary <string, Binding>();
var mexBindingCache = new Dictionary <string, Binding>();
foreach (var endpointConfig in config.Endpoints)
{
var address = endpointConfig.ListenUri;
address = (address == null ? string.Empty : string.Format(address, Environment.MachineName.ToLowerInvariant()));
var serviceContract = Type.GetType(endpointConfig.ServiceContract);
if (serviceContract == null)
{
throw new ConfigurationErrorsException(string.Format("Specified service contract - {0} could not be loaded!", endpointConfig.ServiceContract));
}
var cacheKey = WcfServiceHelper.BuildEndpointAddress(endpointConfig, baseAddresses);
Binding binding;
bindingCache.TryGetValue(cacheKey, out binding);
if (binding == null)
{
binding = WcfServiceHelper.GetBinding(endpointConfig);
bindingCache.Add(cacheKey, binding);
}
if (binding == null)
{
continue;
}
if (endpointConfig.MexBindingEnabled)
{
Binding mexBinding;
mexBindingCache.TryGetValue(cacheKey, out mexBinding);
if (mexBinding == null)
{
mexBinding = new CustomBinding(binding);
mexBindingCache.Add(cacheKey, mexBinding);
serviceHost.AddServiceEndpoint(typeof(IMetadataExchange), mexBinding, "mex");
}
}
if (!endpointConfig.AddMexBindingOnly)
{
ServiceEndpoint serviceEndpoint;
if (endpointConfig.EndpointAddress != endpointConfig.ListenUri)
{
serviceEndpoint = serviceHost.AddServiceEndpoint(
serviceContract, binding,
endpointConfig.EndpointAddress, new Uri(address));
}
else
{
serviceEndpoint = serviceHost.AddServiceEndpoint(
serviceContract, binding, address);
}
if (endpointConfig.ListenUriMode.HasValue)
{
serviceEndpoint.ListenUriMode = (ListenUriMode)Enum.Parse(
typeof(ListenUriMode),
endpointConfig.ListenUriMode.ToString());
}
WcfServiceHelper.ApplyEndpointBehaviorConfiguration(serviceEndpoint, endpointConfig);
}
}
return(serviceHost);
}
/// <summary>
/// To be overriden to get service contracts from
/// the service type specified in .svc file
/// </summary>
/// <param name="type">The service type specified in .svc file</param>
/// <returns></returns>
protected virtual IList <Type> GetServiceContractTypes(Type type)
{
return(WcfServiceHelper.GetServiceContracts(type));
}
