After the long long days research of how to configure InterfaceInterceptor of Unity in the configuration file, posting the questions on the internet forums (e.g. codeplex and official MSDN forums), I got the help from codeplex forum, the problem was resolved at last. I searched almost whole internet with google, all AOP examples of Unity are using attribute based configurtion, these are not what I want. Here is my example of how to use InterfaceInterceptor of Unity with configuration file, but not attribute based.
{
class Program
{
static void Main(string[] args)
{
try
{
IUnityContainer unityContainer = new UnityContainer();
UnityConfigurationSection section = (UnityConfigurationSection)ConfigurationManager.GetSection("unity");
section.Containers.Default.Configure(unityContainer);
IAccountContract service = unityContainer.Resolve<IAccountContract>();
service.Create();
}
catch (Exception ex)
{
Console.WriteLine(string.Format("Type: {1}{0}{0}Message: {2}", Environment.NewLine, ex.GetType().Name, ex.Message));
}
Console.ReadKey(true);
}
}
public interface IAccountContract
{
void Create();
}
public class AccountService : IAccountContract
{
public void Create()
{
throw new InvalidOperationException("Withdraw error.");
}
}
[ConfigurationElementType(typeof(CustomHandlerData))]
public class NotificationHandler : IExceptionHandler
{
public NotificationHandler(NameValueCollection ignore)
{
}
public Exception HandleException(Exception exception, Guid handlingInstanceId)
{
Console.ForegroundColor = ConsoleColor.Red;
Console.WriteLine(exception.Message);
return exception;
}
}
}
<configSections>
<section name="exceptionHandling" type="Microsoft.Practices.EnterpriseLibrary.ExceptionHandling.Configuration.ExceptionHandlingSettings, Microsoft.Practices.EnterpriseLibrary.ExceptionHandling, Version=4.1.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" />
<section name="unity" type="Microsoft.Practices.Unity.Configuration.UnityConfigurationSection, Microsoft.Practices.Unity.Configuration, Version=1.2.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" />
</configSections>
<exceptionHandling>
<exceptionPolicies>
<add name="UIExceptionPolicy">
<exceptionTypes>
<add type="System.Exception, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" postHandlingAction="None" name="Exception">
<exceptionHandlers>
<add type="AOPLearning.NotificationHandler, AOPLearning, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null" name="Custom Handler" />
</exceptionHandlers>
</add>
</exceptionTypes>
</add>
</exceptionPolicies>
</exceptionHandling>
<unity>
<typeAliases>
<typeAlias alias="string" type="System.String, mscorlib" />
<typeAlias alias="boolean" type="System.Boolean, mscorlib" />
<typeAlias alias="singleton" type="Microsoft.Practices.Unity.ContainerControlledLifetimeManager, Microsoft.Practices.Unity" />
<typeAlias alias="interface" type="Microsoft.Practices.Unity.InterceptionExtension.InterfaceInterceptor, Microsoft.Practices.Unity.Interception" />
<typeAlias alias="TypeMatchingRule" type="Microsoft.Practices.Unity.InterceptionExtension.TypeMatchingRule, Microsoft.Practices.Unity.Interception" />
<typeAlias alias="ExceptionCallHandler" type="Microsoft.Practices.EnterpriseLibrary.PolicyInjection.CallHandlers.ExceptionCallHandler, Microsoft.Practices.EnterpriseLibrary.PolicyInjection.CallHandlers" />
<typeAlias alias="IAccountContract" type="AOPLearning.IAccountContract, AOPLearning" />
<typeAlias alias="AccountService" type="AOPLearning.AccountService, AOPLearning" />
</typeAliases>
<containers>
<container>
<types>
<type type="IAccountContract" mapTo="AccountService">
<lifetime type="singleton" />
</type>
<type type="ExceptionCallHandler" name="ExceptionCallHandler">
<typeConfig>
<constructor>
<param name="exceptionPolicyName" parameterType="string">
<value value="UIExceptionPolicy" />
</param>
</constructor>
</typeConfig>
<lifetime type="singleton" />
</type>
</types>
<extensions>
<add type="Microsoft.Practices.Unity.InterceptionExtension.Interception, Microsoft.Practices.Unity.Interception" />
</extensions>
<extensionConfig>
<add name="interception" type="Microsoft.Practices.Unity.InterceptionExtension.Configuration.InterceptionConfigurationElement, Microsoft.Practices.Unity.Interception.Configuration">
<interceptors>
<interceptor type="interface">
<default type="IAccountContract" />
<key type="IAccountContract" />
</interceptor>
</interceptors>
<policies>
<policy name="IAccountContractPolicy">
<matchingRules>
<matchingRule name="TypeMatchingRule" type="TypeMatchingRule">
<injection>
<constructor>
<param name="typeName" parameterType="string">
<value value="AOPLearning.AccountService" type="string"/>
</param>
<param name="ignoreCase" parameterType="boolean">
<value value="true" type="boolean" />
</param>
</constructor>
</injection>
</matchingRule>
</matchingRules>
<callHandlers>
<callHandler type="ExceptionCallHandler" name="ExceptionCallHandler" />
</callHandlers>
</policy>
</policies>
</add>
</extensionConfig>
</container>
</containers>
</unity>
</configuration>