public object Process(ProcessRequest request)
{
var assembly = string.Empty;
var typeName = string.Empty;
var methodName = string.Empty;
var appDomainKey = string.Empty;
MuleMessage result;
MuleMessage muleMessage = new MuleMessage();
IMuleInstrumentation instrumentation = new MuleInstrumentation(Instrument, request.NotifyEvents);
if (string.IsNullOrWhiteSpace(request.AssemblyName))
{
throw new ArgumentNullException("assemblyName");
}
var split = request.AssemblyName.Split(new[] { ',' }, StringSplitOptions.RemoveEmptyEntries);
if (split.Length == 0)
{
throw new ArgumentException("Invalid .NET Assembly Type. The .NET Assembly Type should be: partially qualified \"Namespace.Type, AssemblyName\" or fully qualified name \"Namespace.Type, AssemblyName, [Version], [Culture], [PublicKey]\"");
}
typeName = split[0].Trim();
if (split.Length == 2)
{
assembly = split[1].Trim();
appDomainKey = string.Format("{0}_{1}", request.AssemblyPath, assembly);
}
else // remove type from assembly name
{
assembly = request.AssemblyName.Substring(request.AssemblyName.IndexOf(",") + 1).Trim();
appDomainKey = assembly;
}
if (string.IsNullOrWhiteSpace(request.MethodName))
{
throw new ArgumentNullException("The method name cannot be empty.");
}
// add trust to key
appDomainKey = string.Concat(appDomainKey, request.FullTrust);
// add timestamp to assembly not in GAC
if (request.AssemblyPath.EndsWith(".dll"))
{
appDomainKey = string.Concat(appDomainKey, "_", File.GetLastWriteTime(request.AssemblyPath).Ticks.ToString());
}
methodName = request.MethodName;
muleMessage.Arguments = request.MethodArguments;
muleMessage.InboundProperties = new ReadOnlyDictionary<string, object>(request.InboundProperties);
muleMessage.SessionProperties = request.SessionProperties;
muleMessage.InvocationProperties = request.InvocationProperties;
muleMessage.OutboundProperties = request.OutboundProperties;
var requestPath = muleMessage.InboundProperties.ContainsKey(MuleMessage.RequestKey) ? muleMessage.InboundProperties[MuleMessage.RequestKey] : string.Empty;
muleMessage.Payload = muleMessage.Arguments.ContainsKey(MuleMessage.DataKey) ? muleMessage.Arguments[MuleMessage.DataKey] : requestPath;
var queryString = muleMessage.InboundProperties.ContainsKey("http.query.string") ?
muleMessage.InboundProperties["http.query.string"].ToString().Replace("{", "").Replace("}", "").Replace(" ", "").Replace(",", "&") :
string.Empty;
muleMessage.QueryStrings = string.IsNullOrWhiteSpace(queryString) ? new NameValueCollection() : HttpUtility.ParseQueryString(queryString);
if (string.IsNullOrWhiteSpace(request.AssemblyPath))
{
request.AssemblyPath = componentPath;
}
componentManager = appDomains.GetOrAdd(appDomainKey,
(key) =>
{
var cm = new ComponentManager();
cm.AppDomainKey = appDomainKey;
//Bypass assemblies installed in the GAC
if (request.AssemblyPath.EndsWith(".dll"))
{
// Add FileSystemWatcher to watch any updates on the requested assembly, if changes occur, unload AppDoamin and create a new one
var watcher = new FileSystemWatcher();
watcher.Path = Path.GetDirectoryName(request.AssemblyPath);
watcher.NotifyFilter = NotifyFilters.LastWrite;
watcher.Filter = "*.dll";
watcher.Changed += (o, e) =>
{
var componentWatcher = cm;
watcher.EnableRaisingEvents = false;
var retry = 0;
var maxRetries = 10;
// wait until AppDomain is idle to unload it
while (componentWatcher.State != ComponentState.Idle && retry < maxRetries)
{
Thread.Sleep(15000);
retry++;
}
AppDomain.Unload(componentWatcher.LoaderDomain);
appDomains.TryRemove(appDomainKey, out componentWatcher);
if (retry >= maxRetries)
{
throw new Exception(string.Format("The AppDomain couldn't be unloaded normally after {0} attempts.", retry));
}
};
watcher.EnableRaisingEvents = true;
}
cm.Init(componentPath, request.AssemblyPath, request.FullTrust, logger);
return cm;
});
try
{
// Execute method
string assemblyName;
// Check if it's an assembly in the GAC or one specified by the user
if (request.AssemblyPath.EndsWith(".dll"))
{
assemblyName = AssemblyName.GetAssemblyName(request.AssemblyPath).FullName;
}
else
{
assemblyName = assembly;
}
if(request.Log)
{
Log(string.Format("Start execution of component: {0}.{1}", typeName, methodName));
}
//logger.Write(string.Format("Start execution of component: {0}.{1}", typeName, methodName), LoggerLevel.Trace);
result = (MuleMessage)componentManager.Execute(assemblyName, typeName, methodName, muleMessage, request.IsSingleton, instrumentation);
//logger.Write("End execution {0}.{1}", LoggerLevel.Trace, typeName, methodName);
if(request.Log)
{
Log(string.Format("End execution {0}.{1}", typeName, methodName));
}
}
catch (Exception ex)
{
Log(string.Format("Error executing component {0}.{1} : {2}", typeName, methodName, ex.Message));
throw;
}
return ToProcessRequest(result);
}
public object Process(ProcessRequest request)
{
var assembly = string.Empty;
var typeName = string.Empty;
var methodName = string.Empty;
var appDomainKey = string.Empty;
MuleMessage result;
MuleMessage muleMessage = new MuleMessage();
IMuleInstrumentation instrumentation = new MuleInstrumentation(Instrument, request.NotifyEvents);
if (string.IsNullOrWhiteSpace(request.AssemblyName))
{
throw new ArgumentNullException("assemblyName");
}
var split = request.AssemblyName.Split(new[] { ',' }, StringSplitOptions.RemoveEmptyEntries);
if (split.Length == 0)
{
throw new ArgumentException("Invalid .NET Assembly Type. The .NET Assembly Type should be: partially qualified \"Namespace.Type, AssemblyName\" or fully qualified name \"Namespace.Type, AssemblyName, [Version], [Culture], [PublicKey]\"");
}
typeName = split[0].Trim();
if (split.Length == 2)
{
assembly = split[1].Trim();
appDomainKey = string.Format("{0}_{1}", request.AssemblyPath, assembly);
}
else // remove type from assembly name
{
assembly = request.AssemblyName.Substring(request.AssemblyName.IndexOf(",") + 1).Trim();
appDomainKey = assembly;
}
if (string.IsNullOrWhiteSpace(request.MethodName))
{
throw new ArgumentNullException("The method name cannot be empty.");
}
// add trust to key
appDomainKey = string.Concat(appDomainKey, request.FullTrust);
// add timestamp to assembly not in GAC
if (request.AssemblyPath.EndsWith(".dll"))
{
appDomainKey = string.Concat(appDomainKey, "_", File.GetLastWriteTime(request.AssemblyPath).Ticks.ToString());
}
methodName = request.MethodName;
muleMessage.Arguments = request.MethodArguments;
muleMessage.InboundProperties = new ReadOnlyDictionary <string, object>(request.InboundProperties);
muleMessage.SessionProperties = request.SessionProperties;
muleMessage.InvocationProperties = request.InvocationProperties;
muleMessage.OutboundProperties = request.OutboundProperties;
var requestPath = muleMessage.InboundProperties.ContainsKey(MuleMessage.RequestKey) ? muleMessage.InboundProperties[MuleMessage.RequestKey] : string.Empty;
muleMessage.Payload = muleMessage.Arguments.ContainsKey(MuleMessage.DataKey) ? muleMessage.Arguments[MuleMessage.DataKey] : requestPath;
var queryString = muleMessage.InboundProperties.ContainsKey("http.query.string") ?
muleMessage.InboundProperties["http.query.string"].ToString().Replace("{", "").Replace("}", "").Replace(" ", "").Replace(",", "&") :
string.Empty;
muleMessage.QueryStrings = string.IsNullOrWhiteSpace(queryString) ? new NameValueCollection() : HttpUtility.ParseQueryString(queryString);
if (string.IsNullOrWhiteSpace(request.AssemblyPath))
{
request.AssemblyPath = componentPath;
}
componentManager = appDomains.GetOrAdd(appDomainKey,
(key) =>
{
var cm = new ComponentManager();
cm.AppDomainKey = appDomainKey;
//Bypass assemblies installed in the GAC
if (request.AssemblyPath.EndsWith(".dll"))
{
// Add FileSystemWatcher to watch any updates on the requested assembly, if changes occur, unload AppDoamin and create a new one
var watcher = new FileSystemWatcher();
watcher.Path = Path.GetDirectoryName(request.AssemblyPath);
watcher.NotifyFilter = NotifyFilters.LastWrite;
watcher.Filter = "*.dll";
watcher.Changed += (o, e) =>
{
var componentWatcher = cm;
watcher.EnableRaisingEvents = false;
var retry = 0;
var maxRetries = 10;
// wait until AppDomain is idle to unload it
while (componentWatcher.State != ComponentState.Idle && retry < maxRetries)
{
Thread.Sleep(15000);
retry++;
}
AppDomain.Unload(componentWatcher.LoaderDomain);
appDomains.TryRemove(appDomainKey, out componentWatcher);
if (retry >= maxRetries)
{
throw new Exception(string.Format("The AppDomain couldn't be unloaded normally after {0} attempts.", retry));
}
};
watcher.EnableRaisingEvents = true;
}
cm.Init(componentPath, request.AssemblyPath, request.FullTrust, logger);
return(cm);
});
try
{
// Execute method
string assemblyName;
// Check if it's an assembly in the GAC or one specified by the user
if (request.AssemblyPath.EndsWith(".dll"))
{
assemblyName = AssemblyName.GetAssemblyName(request.AssemblyPath).FullName;
}
else
{
assemblyName = assembly;
}
if (request.Log)
{
Log(string.Format("Start execution of component: {0}.{1}", typeName, methodName));
}
//logger.Write(string.Format("Start execution of component: {0}.{1}", typeName, methodName), LoggerLevel.Trace);
result = (MuleMessage)componentManager.Execute(assemblyName, typeName, methodName, muleMessage, request.IsSingleton, instrumentation);
//logger.Write("End execution {0}.{1}", LoggerLevel.Trace, typeName, methodName);
if (request.Log)
{
Log(string.Format("End execution {0}.{1}", typeName, methodName));
}
}
catch (Exception ex)
{
Log(string.Format("Error executing component {0}.{1} : {2}", typeName, methodName, ex.Message));
throw;
}
return(ToProcessRequest(result));
}
