[IronPython] Loading DLL from pyc.py into ScriptEngine
hellosticky
hellosticky at gmail.com
Wed Aug 27 01:09:11 CEST 2008
Hi Michael, that's actually exactly what I'm doing-- a FullTrust app dynamically creates an AppDomain in which I'm executing my examples below
> -----Original Message-----
> From: users-bounces at lists.ironpython.com
> [mailto:users-bounces at lists.ironpython.com] On Behalf Of Michael Foord
> Sent: Tuesday, August 26, 2008 6:57 PM
> To: Discussion of IronPython
> Subject: Re: [IronPython] Loading DLL from pyc.py into ScriptEngine
>
> hellosticky wrote:
> > Okay, I tried it but got a Security Exception in
> System.Scripting.Com.ComMetaObject.IsComObject. The
> permission requested was for UnmanagedCode. I'm running in
> partial trust so obviously I can't be giving the code
> UnmanagedCode privilege. Is there some flag I have to set
> that says I'm in partial trust?
> >
>
> Does any part of your application run in full trust? You can create a
> runtime with a 'remote' engine inside an appdomain with
> partial trust.
> Not something I'm an expert on however...
>
> Michael
>
> > FirstPermissionThatFailed:
> > {<IPermission
> class="System.Security.Permissions.SecurityPermission,
> mscorlib, Version=2.0.0.0, Culture=neutral,
> PublicKeyToken=b77a5c561934e089"
> > version="1"
> > Flags="UnmanagedCode"/>
> > }
> >
> > Server stack trace:
> > at
> System.Security.CodeAccessSecurityEngine.ThrowSecurityExceptio
> n(Assembly asm, PermissionSet granted, PermissionSet refused,
> RuntimeMethodHandle rmh, SecurityAction action, Object
> demand, IPermission permThatFailed)
> > at
> System.Security.CodeAccessSecurityEngine.ThrowSecurityExceptio
> n(Object assemblyOrString, PermissionSet granted,
> PermissionSet refused, RuntimeMethodHandle rmh,
> SecurityAction action, Object demand, IPermission permThatFailed)
> > at
> System.Security.CodeAccessSecurityEngine.CheckSetHelper(Permis
> sionSet grants, PermissionSet refused, PermissionSet demands,
> RuntimeMethodHandle rmh, Object assemblyOrString,
> SecurityAction action, Boolean throwException)
> > at
> System.Security.CodeAccessSecurityEngine.CheckSetHelper(Compre
> ssedStack cs, PermissionSet grants, PermissionSet refused,
> PermissionSet demands, RuntimeMethodHandle rmh, Assembly asm,
> SecurityAction action)
> > at System.Scripting.Com.ComMetaObject.IsComObject(Object obj)
> > at System.Scripting.Actions.MetaAction.Bind[T](Object[] args)
> > at
> System.Scripting.Actions.CallSite`1.CreateNewRule(Rule`1
> originalMonomorphicRule, Object[] args)
> > at
> System.Scripting.Actions.CallSite`1.UpdateAndExecute(Object[] args)
> > at
> System.Scripting.Actions.UpdateDelegates.Update6[T,T0,T1,T2,T3
> ,T4,T5,TRet](CallSite site, T0 arg0, T1 arg1, T2 arg2, T3
> arg3, T4 arg4, T5 arg5)
> > at IronPython.Runtime.Importer.Import(CodeContext
> context, String fullName, PythonTuple from, Int32 level)
> > at
> IronPython.Runtime.Operations.PythonOps.ImportTop(CodeContext
> context, String fullName, Int32 level)
> > at <module>$2##2(Closure , Scope , LanguageContext )
> > at
> System.Scripting.ScriptCode.InvokeTarget(LambdaExpression
> code, Scope scope)
> > at
> System.Scripting.Runtime.OptimizedScriptCode.InvokeTarget(Lamb
> daExpression code, Scope scope)
> > at System.Scripting.SourceUnit.Execute(Scope scope,
> ErrorSink errorSink)
> > at
> Microsoft.Scripting.Hosting.ScriptSource.Execute(ScriptScope scope)
> > at DlrHostedProvider.OnRender()
> >
> > Here is the code I used (approximately):
> >
> > StringBuilder sb = new StringBuilder(100);
> >
> > using (MemoryStream ms = new MemoryStream())
> > {
> > using (StringWriter writer = new StringWriter(sb))
> > {
> > Assembly assembly = Assembly.Load(AssemblyName);
> > ScriptRuntime runtime = ScriptRuntime.Create();
> > runtime.LoadAssembly(assembly);
> > runtime.IO.SetOutput(ms, writer);
> > ScriptEngine engine =
> runtime.GetEngine(GetEngineName());
> > ScriptScope scope = engine.CreateScope();
> > string code = string.Format(@"import clr
> > clr.AddReference(""{0}"")
> > import {1}
> > ",
> > AssemblyName,
> > AssemblyType.Replace(".py", "")
> > );
> > ScriptSource source =
> engine.CreateScriptSourceFromString(
> > code,
> > SourceCodeKind.Statements
> > );
> > source.Execute(scope);
> > }
> > }
> > content = sb.ToString();
> >
> > Thanks,
> >
> >
> >> -----Original Message-----
> >> From: hellosticky [mailto:hellosticky at gmail.com]
> >> Sent: Tuesday, August 26, 2008 6:46 PM
> >> To: 'Srivatsn Narayanan'; 'Discussion of IronPython'
> >> Subject: RE: [IronPython] Loading DLL from pyc.py into ScriptEngine
> >>
> >> Thanks, I will try that. Can you explain again how just doing
> >> "import test" executes the test.py file that was compiled
> >> into the DLL? It's not very logical..
> >>
> >> Thanks,
> >>
> >>
> >>> -----Original Message-----
> >>> From: Srivatsn Narayanan [mailto:srivatsn at microsoft.com]
> >>> Sent: Tuesday, August 26, 2008 6:34 PM
> >>> To: Discussion of IronPython; hellosticky at gmail.com
> >>> Subject: RE: [IronPython] Loading DLL from pyc.py into
> ScriptEngine
> >>>
> >>> Also Assembly.Load is not sufficient to be able to import the
> >>> compiled code. A clr.AddReference needs to be done which
> >>> publishes the module. The easiest way to do that is include
> >>> it in the string as Michael pointed out.
> >>>
> >>> ScriptSource source =
> >>> engine.CreateScriptSourceFromString("import
> >>> clr;clr.AddReference(\"test.dll\");import test",
> >>> SourceCodeKind.Statements);
> >>>
> >>> You might need to add the current folder to the path as well
> >>> before the clr.AddReference.
> >>>
> >>> -----Original Message-----
> >>> From: users-bounces at lists.ironpython.com
> >>> [mailto:users-bounces at lists.ironpython.com] On Behalf Of
> >>>
> >> Michael Foord
> >>
> >>> Sent: Tuesday, August 26, 2008 3:12 PM
> >>> To: hellosticky at gmail.com; Discussion of IronPython
> >>> Subject: Re: [IronPython] Loading DLL from pyc.py into
> ScriptEngine
> >>>
> >>> hellosticky wrote:
> >>>
> >>>> I also tried:
> >>>>
> >>>> Assembly assembly = Assembly.Load(AssemblyName);
> >>>> ScriptRuntime runtime = ScriptRuntime.Create();
> >>>> runtime.LoadAssembly(assembly);
> >>>> ScriptScope scope = runtime.ExecuteFile("test.py");
> >>>> object o = scope.Execute(null);
> >>>>
> >>>> But that threw a script not found exception saying it could
> >>>>
> >>> find the source file for test.py, so it would seem like this
> >>> wants to recompile it
> >>>
> >>>>
> >>>>> -----Original Message-----
> >>>>> From: hellosticky [mailto:hellosticky at gmail.com]
> >>>>> Sent: Tuesday, August 26, 2008 5:52 PM
> >>>>> To: IronPython
> >>>>> Subject: Loading DLL from pyc.py into ScriptEngine
> >>>>>
> >>>>> Hi,
> >>>>>
> >>>>> I created an IronPython DLL with "ipy.exe pyc.py /out:test
> >>>>> /target:dll test.py" which created test.dll. Now, from C#,
> >>>>> I'd like to execute test.py from test.dll. I just opened up
> >>>>> dlr-spec-hosting and there's a CreateScriptSourceFromStream,
> >>>>> but I don't see that in 2.0 Beta 4 bits. Here is where I'm
> >>>>> stuck. How do I get that assembly into the engine and then
> >>>>> execute test.py?
> >>>>>
> >>> Well - the easiest way is to execute 'import test' after
> >>>
> >> having added
> >>
> >>> the assembly. This should execute the code in order to create
> >>> a module.
> >>>
> >>> ScriptScope scope = engine.CreateScope();
> >>> ScriptSource source =
> >>> engine.CreateScriptSourceFromString("import test",
> >>> SourceCodeKind.Statements);
> >>> engine.Execute(scope);
> >>>
> >>> There is an API for setting a stream as stdout on an engine -
> >>> 'runtime.IO.SetOutput'.
> >>>
> >>> Michael
> >>>
> >>>
> >>>>> Also, I'd like to get the output into a
> >>>>> string (I guess I can just redirect Console.Out?)
> >>>>>
> >>>>> public string Execute(string assemblyName)
> >>>>> {
> >>>>> string content = null;
> >>>>>
> >>>>> Assembly assembly = Assembly.Load(assemblyName);
> >>>>> ScriptRuntime runtime = ScriptRuntime.Create();
> >>>>> ObjectOperations operations = runtime.CreateOperations();
> >>>>> ScriptEngine engine = runtime.GetEngine("py");
> >>>>> // magic..
> >>>>>
> >>>>> return content;
> >>>>> }
> >>>>>
> >>>>> Thanks,
> >>>>>
> >>>>>
> >>>> _______________________________________________
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> >
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