openflow-dev

[Openflow-dev] Official project site almost ready; new doc available

[Daniele T. <d.t...@ic...>]

Dear all,

the OpenFlow project is now a bit spread out. I'm moving all the core=20
reference to the project to

www.openflow.it

The Zope and sourceforge pages will soon be containing only links to=20
www.openflow.it (even though OF will still use the sourceforge CVS).

Please get accustomed to the new site... and report any wrong links it mi=
ght=20
have.

OpenFlow 0.7.1 (0.7 with the latest bug fixed) as well as the new demo ha=
ve=20
been released on www.openflow.it.

You might also want to check out the latest documentation I wrote: an OF=20
broad introduction. You can find it at:
http://www.openflow.it/Documentation/documentation/OpenFlowIntroduction


Thank you for you collaboration,
=09Daniele =3D)

Re: [Openflow-dev] fallin error

[Daniele T. <d.t...@ic...>]

Hello,

On Wednesday 13 March 2002 13:08, Juli=E1n Mu=F1oz wrote:
> > Oooops! I'm sorry! When I tried out the bug I saw some trouble when
> > working with more than one process (the chooseFallin page showed both=
 the
> > radio buttons and multiple submit: one each per process) so I went on=
 and
> > corrected it. I thought you overlooked that, but I guess you didn't =3D=
)
>
> Ok, so how does it behave now ? What happens when you push on a submit
> button that is not select by the radio button ? Or has one of them
> disappeared ?
>
> What I done was to create one submit form for each process, instead of =
a
> global one, so the good  seleceted activity_id is sent (before was sent=
 a
> list of activity_ids, so it was provoking the error).
>

Right. That's how it works now as well: I just removed the radio buttons =
from=20
the chooseFallin form (they where needed no more).=20

Daniele =3D)

Re: [Openflow-dev] fallin error

[<jm...@so...>]

Hi,

> Oooops! I'm sorry! When I tried out the bug I saw some trouble when worki=
ng
> with more than one process (the chooseFallin page showed both the radio
> buttons and multiple submit: one each per process) so I went on and corre=
cted
> it. I thought you overlooked that, but I guess you didn't =3D)

Ok, so how does it behave now ? What happens when you push on a submit
button that is not select by the radio button ? Or has one of them
disappeared ?

What I done was to create one submit form for each process, instead of a
global one, so the good  seleceted activity_id is sent (before was sent a
list of activity_ids, so it was provoking the error).








>
> Sorry again,
> =09Daniele =3D)
>
>
> _______________________________________________
> Openflow-dev mailing list
> Ope...@li...
> https://lists.sourceforge.net/lists/listinfo/openflow-dev
>

--=20

      __o
    _ \<_
   (_)/(_)

Saludos de Juli=E1n
EA4ACL
-.-

Foro Wireless Madrid
http://opennetworks.rg3.net

Re: [Openflow-dev] fallin error

[Daniele T. <d.t...@ic...>]

Dear Juli=E1n,

On Wednesday 13 March 2002 12:23, Juli=E1n Mu=F1oz wrote:
> Uhm, Daniele, read all the email of the list,

Oooops! I'm sorry! When I tried out the bug I saw some trouble when worki=
ng=20
with more than one process (the chooseFallin page showed both the radio=20
buttons and multiple submit: one each per process) so I went on and corre=
cted=20
it. I thought you overlooked that, but I guess you didn't =3D)

Sorry again,
=09Daniele =3D)

Re: [Openflow-dev] fallin error

[<jm...@so...>]

Uhm, Daniele, read all the email of the list,

I already fixed the bug on the cvs !

;-)




On Wed, 13 Mar 2002, Daniele Tarini wrote:

> Dear Juli=E1n,
>
> On Wednesday 06 March 2002 17:12, Juli=E1n Mu=F1oz wrote:
> > After putting an instance to fallout, and doing a falling to the activi=
ty
> > "End" of the same process:
> >
> >
> > Zope Error
>
> thank you, bug fixed, cvs updated =3D)
>
> Can download cvs version of openflow from:
> http://sourceforge.net/cvs/?group_id=3D2370
>
> Thanks again,
>          Daniele
>

--=20

      __o
    _ \<_
   (_)/(_)

Saludos de Juli=E1n
EA4ACL
-.-

Foro Wireless Madrid
http://opennetworks.rg3.net

Re: [Openflow-dev] Sublflow mode

[Daniele T. <d.t...@ic...>]

Dear Juli=E1n,

On Tuesday 05 March 2002 17:20, Juli=E1n Mu=F1oz wrote:
> What is subflow mode ? (sync, async)
>
> I have difficulties to undestand it.

The subflow mode tells the process instance what to do when the subproces=
s is=20
started.

sync: the workitem that invoked the subprocess will wait for the subproce=
ss=20
to reach its end. When the subprocess ends, the subflow activity complete=
s=20
the workitem.

async: the workitem that invoked the subprocess will NOT wait for the=20
subprocess to reach its end. As soon as the subprocess is started, the=20
subflow activity completes the workitem.


Example:

Process main:
Begin,
SubflowToSub,
End

Process sub:
Begin,
myact,
End

if SubflowToSub is set to sync the flow will be:

Begin(main)
|
SubflowToSub(main)
|
Begin(sub)
|
myact(sub)
|
End(sub)
|
End(main)


if SubflowToSub is set to async the flow will be:

Begin(main)
|
SubflowToSub(main)
|=09\
|=09Begin(sub)
|=09|
|=09myact(sub)
|=09|
|=09End(sub)
|
End(main)

clear enough?

Daniele =3D)

Re: [Openflow-dev] fallin error

[Daniele T. <d.t...@ic...>]

Dear Juli=E1n,

On Wednesday 06 March 2002 17:12, Juli=E1n Mu=F1oz wrote:
> After putting an instance to fallout, and doing a falling to the activi=
ty
> "End" of the same process:
>
>
> Zope Error

thank you, bug fixed, cvs updated =3D)

Can download cvs version of openflow from:
http://sourceforge.net/cvs/?group_id=3D2370

Thanks again,
         Daniele

Re: [Openflow-dev] Dummy activities with Join kind 'and'

[Daniele T. <d.t...@ic...>]

Dear Peter,

On Tuesday 12 March 2002 15:23, Peter Edwards wrote:
> I find there is a problem with dummy activities where multiple threads =
are
> joined (Join kind 'and'). The activity waits as required until all inco=
ming
> transitions are signalled, but the dummy activity remains 'inactive'. I
> have to manage the workflow to activate and then complete the dummy
> activity, then the workflow continues as expected.

thank you, bug fixed, cvs updated =3D)

Can download cvs version of openflow from:
http://sourceforge.net/cvs/?group_id=3D2370

Thanks again,
=09Daniele

[Openflow-dev] Demo: updated version

[Daniele T. <d.t...@ic...>]

The demo on=20
http://www.zope.org/Members/vds/
has been updated.

Now it has a (very) short intro and links to the main pages (the worklist=
s=20
and submission application)


Daniele

[Openflow-dev] Dummy activities with Join kind 'and'

[Peter E. <P.E...@er...>]

Hi,

Using OpenFlow 0.7

I find there is a problem with dummy activities where multiple threads are 
joined (Join kind 'and'). The activity waits as required until all incoming 
transitions are signalled, but the dummy activity remains 'inactive'. I have to 
manage the workflow to activate and then complete the dummy activity, then the 
workflow continues as expected.

Incidently, I find 90% of all join and split kinds should be 'xor'. Could you 
set that, rather than 'and', to be the default for new activities?

Best wishes
Peter

Re: [Openflow-dev] fallin error

[<jm...@so...>]

I have corrected this bug.

Take a look at openflow-engine/dtml/openflow/chooseFallin.dtml


On Wed, 6 Mar 2002, Juli=E1n Mu=F1oz wrote:

> After putting an instance to fallout, and doing a falling to the activity
> "End" of the same process:
>
>
> Zope Error
>
> Zope has encountered an error while publishing this resource.
>
> Error Type: TypeError
> Error Value: cannot add type "list" to string
>
> Traceback (innermost last):
>   File E:\Archivos de programa\zwin\lib\python\ZPublisher\Publish.py, lin=
e
> 223, in publish_module
>   File E:\Archivos de programa\zwin\lib\python\ZPublisher\Publish.py, lin=
e
> 187, in publish
>   File E:\Archivos de programa\zwin\lib\python\Zope\__init__.py, line 226=
,
> in zpublisher_exception_hook
>     (Object: LockableItem)
>   File E:\Archivos de programa\zwin\lib\python\ZPublisher\Publish.py, lin=
e
> 171, in publish
>   File E:\Archivos de programa\zwin\lib\python\ZPublisher\mapply.py, line
> 160, in mapply
>     (Object: fallinWorkitem)
>   File E:\Archivos de programa\zwin\lib\python\ZPublisher\Publish.py, lin=
e
> 112, in call_object
>     (Object: fallinWorkitem)
>   File E:\Archivos de
> programa\zwinssl2\lib\python\Products\Openflow\openflow.py, line 550, in
> fallinWorkitem
>     (Object: LockableItem)
>   File E:\Archivos de
> programa\zwinssl2\lib\python\Products\Openflow\instance.py, line 176, in
> fallinWorkitem
>     (Object: LockableItem)
> TypeError: (see above)
>
>
>
>
>

--=20

      __o
    _ \<_
   (_)/(_)

Saludos de Juli=E1n
EA4ACL
-.-

Foro Wireless Madrid
http://opennetworks.rg3.net

[Openflow-dev] subprocesses sync vs async

[<jm...@so...>]

The diference between sync and async is that in sync mode de calling
activity remains active while it is "running" the subprocess, while in
async mode it completes inmediatly (so the instance takes 2 paths, the
main workflow and the subprocess).



--=20

      __o
    _ \<_
   (_)/(_)

Saludos de Juli=E1n
EA4ACL
-.-

Foro Wireless Madrid
http://opennetworks.rg3.net

[Openflow-dev] fallin error

[<jm...@so...>]

After putting an instance to fallout, and doing a falling to the activity
"End" of the same process:


Zope Error

Zope has encountered an error while publishing this resource.

Error Type: TypeError
Error Value: cannot add type "list" to string

Traceback (innermost last):
  File E:\Archivos de programa\zwin\lib\python\ZPublisher\Publish.py, line
223, in publish_module
  File E:\Archivos de programa\zwin\lib\python\ZPublisher\Publish.py, line
187, in publish
  File E:\Archivos de programa\zwin\lib\python\Zope\__init__.py, line 226,
in zpublisher_exception_hook
    (Object: LockableItem)
  File E:\Archivos de programa\zwin\lib\python\ZPublisher\Publish.py, line
171, in publish
  File E:\Archivos de programa\zwin\lib\python\ZPublisher\mapply.py, line
160, in mapply
    (Object: fallinWorkitem)
  File E:\Archivos de programa\zwin\lib\python\ZPublisher\Publish.py, line
112, in call_object
    (Object: fallinWorkitem)
  File E:\Archivos de
programa\zwinssl2\lib\python\Products\Openflow\openflow.py, line 550, in
fallinWorkitem
    (Object: LockableItem)
  File E:\Archivos de
programa\zwinssl2\lib\python\Products\Openflow\instance.py, line 176, in
fallinWorkitem
    (Object: LockableItem)
TypeError: (see above)




--=20

      __o
    _ \<_
   (_)/(_)

Saludos de Juli=E1n
EA4ACL
-.-

Foro Wireless Madrid
http://opennetworks.rg3.net

[Openflow-dev] Error in subprocesses

[<jm...@so...>]

I report the following "bug":

by default, when you create an activity which is a subprocess, no
default value is assigned to subflow mode, although it seems (because you
see something in mode.

I suppose it is why this erros happens, the value returned by

[new_w] =3D instance.forwardWorkitem(workitem_id, [destination], process.g
etSubflowMode(activity_id))

is []



Zope Error

Zope has encountered an error while publishing this resource.

Error Type: ValueError
Error Value: unpack list of wrong size

Troubleshooting Suggestions

    * The URL may be incorrect.
    * The parameters passed to this resource may be incorrect.
    * A resource that this resource relies on may be encountering an
error.

For more detailed information about the error, please refer to the HTML
source for this page.

If the error persists please contact the site maintainer. Thank you for
your patience.

[Powered by Zope]

(.....)

 File E:\Archivos de
programa\zwinssl2\lib\python\Products\Openflow\openflow.py, line 471, in
completeWorkitem
    (Object: LockableItem)
  File E:\Archivos de
programa\zwinssl2\lib\python\Products\Openflow\openflow.py, line 534, in
forwardWorkitem
    (Object: LockableItem)
  File E:\Archivos de
programa\zwinssl2\lib\python\Products\Openflow\openflow.py, line 646, in
hasNewWorkitem
    (Object: LockableItem)
  File E:\Archivos de
programa\zwinssl2\lib\python\Products\Openflow\openflow.py, line 626, in
startSubflow
    (Object: LockableItem)
ValueError: (see above)


 --

      __o
    _ \<_
   (_)/(_)

Saludos de Juli=E1n
EA4ACL
-.-

Foro Wireless Madrid
http://opennetworks.rg3.net

[Openflow-dev] subprocess parameters ?

[<jm...@so...>]

Subprocess parameters are not yet implemented, am I right ?

What is the idea behind them ?

I would like to all a subflow form 2 differents activities, with 2
different parameters

--=20

      __o
    _ \<_
   (_)/(_)

Saludos de Juli=E1n
EA4ACL
-.-

Foro Wireless Madrid
http://opennetworks.rg3.net

[Openflow-dev] Sublflow mode

[<jm...@so...>]

What is subflow mode ? (sync, async)

I have difficulties to undestand it.

--=20

      __o
    _ \<_
   (_)/(_)

Saludos de Juli=E1n
EA4ACL
-.-

Foro Wireless Madrid
http://opennetworks.rg3.net

Re: [Openflow-dev] No route in Openflow 0.6

[<jm...@so...>]

Done, as I said


On Tue, 5 Mar 2002, Juli=E1n Mu=F1oz wrote:

>
> When there is no route in the Openflow, we have this not nice error (see
> below)
>
> I solved this in my cvs branch raising a "No Route" exception.
>
> Uhm, I think it should be the same here. If an instance of a process has
> no route to go, the activity should not be set autofinish. So this is an
> error in the design of the workflow.
>
> An error like "Workflow error. The process don't know what to do know (no
> transitions to follow)" would be more convenient.
>
> But where raise this exception ?
>
> openflow.forwardWorkitem ?
> openflow.getTransitionList ?
> process.route ?
>
> I think it is better in openflow.forwardWorkitem, do you agree ?
>
>
>
>  Error Type: UnboundLocalError
> Error Value: local variable 'transition_list' referenced before assignmen=
t
>
> (...)
>  File E:\Archivos de
> programa\zwinssl2\lib\python\Products\Openflow\openflow.py, line 523, in
> forwardWorkitem
>     (Object: LockableItem)
>   File E:\Archivos de
> programa\zwinssl2\lib\python\Products\Openflow\openflow.py, line 504, in
> getTransitionList
>     (Object: LockableItem)
> UnboundLocalError: (see above)
>
>
>
>
>

--=20

      __o
    _ \<_
   (_)/(_)

Saludos de Juli=E1n
EA4ACL
-.-

Foro Wireless Madrid
http://opennetworks.rg3.net

[Openflow-dev] No route in Openflow 0.6

[<jm...@so...>]

When there is no route in the Openflow, we have this not nice error (see
below)

I solved this in my cvs branch raising a "No Route" exception.

Uhm, I think it should be the same here. If an instance of a process has
no route to go, the activity should not be set autofinish. So this is an
error in the design of the workflow.

An error like "Workflow error. The process don't know what to do know (no
transitions to follow)" would be more convenient.

But where raise this exception ?

openflow.forwardWorkitem ?
openflow.getTransitionList ?
process.route ?

I think it is better in openflow.forwardWorkitem, do you agree ?



 Error Type: UnboundLocalError
Error Value: local variable 'transition_list' referenced before assignment

(...)
 File E:\Archivos de
programa\zwinssl2\lib\python\Products\Openflow\openflow.py, line 523, in
forwardWorkitem
    (Object: LockableItem)
  File E:\Archivos de
programa\zwinssl2\lib\python\Products\Openflow\openflow.py, line 504, in
getTransitionList
    (Object: LockableItem)
UnboundLocalError: (see above)




--=20

      __o
    _ \<_
   (_)/(_)

Saludos de Juli=E1n
EA4ACL
-.-

Foro Wireless Madrid
http://opennetworks.rg3.net

RE: [Openflow-dev] What means "Finish Mode Automatic" ?

[Peter E. <P.E...@er...>]

I had a different explanation of this from Daniele as follows: (sorry I forgot 
to copy my query that preceded it to the list)

Auto/manual finish:
In automatic finish mode as soon as a "completeWorkitem" API is called
(supposedly by the activity application upon ending its work) the instance
will be automatically forwarded to the next activity.
In manual finish mode this will not be done and user (again, the activity
application upon user input) will have to call the "forwardWorkitem" API.
This enables the user to choose a given path (transition) for the instance to
follow. So mainly this mode is reserved for manually steering the instance in
alternative paths of the process. (Remeber that you can automatically steer
the instance giving condition to transitions).


-----Original Message-----
From:	en...@ic... [SMTP:en...@ic...]
Sent:	01 March 2002 17:45
To:	Ope...@li...
Subject:	Re: [Openflow-dev] What means "Finish Mode Automatic" ?

On Thu, Feb 28, 2002 at 02:51:05PM +0000, Juli?n Mu?oz wrote:
> What means "Finish Mode Automatic" ?

Hi,
sometimes may happen that you need an explicit signal to be sure an
action is terminated, is usefulin embedded environment or in presence of
lot o 'manual' work, maybe it will not be useful for most of OpenFlow
user but we've included this option for WfMC compatibility.

> _______________________________________________
> Openflow-dev mailing list
> Ope...@li...
> https://lists.sourceforge.net/lists/listinfo/openflow-dev

--
Vincenzo Di Somma - Responsabile Ricerca e Sviluppo - Icube S.r.l.
Sede:   Via Ridolfi 15 - 56124 Pisa (PI), Italia
E-mail: e.d...@ic...              WWW: www.icube.it
Tel:    (+39) 050 97 02 07              Fax: (+39) 050 31 36 588
 << File: ATT00003.att >> 

RE: [Openflow-dev] Transition condition syntax

[Peter E. <P.E...@er...>]

This explains it, thanks.

I had split kind 'and', with the wrong assumption that the condition would take 
priority. I now have 'xor' and it's working correctly.

(Openflow version 0.7)

Peter.

-----Original Message-----
From:	Julian Munoz [SMTP:jm...@so...]
Sent:	01 March 2002 18:09
To:	Peter Edwards
Cc:	'ope...@li...'
Subject:	Re: [Openflow-dev] Transition condition syntax

What kind of gate has you activity ?

For this activity, What is the the value of  "Workitem handling split
kind" ?

If it is and, it splits through all the paths, idenpently of the
condition. If it is xor, it goes only  to one path, depending of the
condition.


On Fri, 1 Mar 2002, Peter Edwards wrote:

> What is the syntax for Transition conditions?
>
> I tried to choose a path depending on presence or absence of a Property. I 
have
> tried several alternatives for the conditions, the most recent being
> 	 instance.hasProperty('result')
> 	not(instance.hasProperty('result'))
> but every time I find both paths being chosen.
>
> Thanks
> Peter
>
>
> _______________________________________________
> Openflow-dev mailing list
> Ope...@li...
> https://lists.sourceforge.net/lists/listinfo/openflow-dev
>

--

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    _ \<_
   (_)/(_)

Saludos de Julian
EA4ACL
-.-

Foro Wireless Madrid
http://opennetworks.rg3.net

[Openflow-dev] Work List

[<jm...@so...>]

What do you think about that in the Work List only appear the activities
with Inactive workitems or Active workitems ?



--=20

      __o
    _ \<_
   (_)/(_)

Saludos de Juli=E1n
EA4ACL
-.-

Foro Wireless Madrid
http://opennetworks.rg3.net

Re: [Openflow-dev] Transition condition syntax

[<jm...@so...>]

What kind of gate has you activity ?

For this activity, What is the the value of  "Workitem handling split
kind" ?

If it is and, it splits through all the paths, idenpently of the
condition. If it is xor, it goes only  to one path, depending of the
condition.


On Fri, 1 Mar 2002, Peter Edwards wrote:

> What is the syntax for Transition conditions?
>
> I tried to choose a path depending on presence or absence of a Property. =
I have
> tried several alternatives for the conditions, the most recent being
> =09 instance.hasProperty('result')
> =09not(instance.hasProperty('result'))
> but every time I find both paths being chosen.
>
> Thanks
> Peter
>
>
> _______________________________________________
> Openflow-dev mailing list
> Ope...@li...
> https://lists.sourceforge.net/lists/listinfo/openflow-dev
>

--=20

      __o
    _ \<_
   (_)/(_)

Saludos de Juli=E1n
EA4ACL
-.-

Foro Wireless Madrid
http://opennetworks.rg3.net

Re: [Openflow-dev] Transition condition syntax

[<en...@ic...>]

which version of OpenFlow are you using ?
On Fri, Mar 01, 2002 at 04:32:31PM -0000, Peter Edwards wrote:
> What is the syntax for Transition conditions?
>=20
> I tried to choose a path depending on presence or absence of a Property. =
I have=20
> tried several alternatives for the conditions, the most recent being
> 	 instance.hasProperty('result')
> 	not(instance.hasProperty('result'))
> but every time I find both paths being chosen.
>=20
> Thanks
> Peter
>=20
>=20
> _______________________________________________
> Openflow-dev mailing list
> Ope...@li...
> https://lists.sourceforge.net/lists/listinfo/openflow-dev

--=20
Vincenzo Di Somma - Responsabile Ricerca e Sviluppo - Icube S.r.l.
Sede:   Via Ridolfi 15 - 56124 Pisa (PI), Italia
E-mail: e.d...@ic...              WWW: www.icube.it
Tel:    (+39) 050 97 02 07              Fax: (+39) 050 31 36 588

Re: [Openflow-dev] Transition condition syntax

[<en...@ic...>]

Which version of OpenFlow are you using ?

On Fri, Mar 01, 2002 at 04:32:31PM -0000, Peter Edwards wrote:
> What is the syntax for Transition conditions?
>=20
> I tried to choose a path depending on presence or absence of a Property. =
I have=20
> tried several alternatives for the conditions, the most recent being
> 	 instance.hasProperty('result')
> 	not(instance.hasProperty('result'))
> but every time I find both paths being chosen.
>=20
> Thanks
> Peter
>=20
>=20
> _______________________________________________
> Openflow-dev mailing list
> Ope...@li...
> https://lists.sourceforge.net/lists/listinfo/openflow-dev

--=20
Vincenzo Di Somma - Responsabile Ricerca e Sviluppo - Icube S.r.l.
Sede:   Via Ridolfi 15 - 56124 Pisa (PI), Italia
E-mail: e.d...@ic...              WWW: www.icube.it
Tel:    (+39) 050 97 02 07              Fax: (+39) 050 31 36 588

Re: [Openflow-dev] What means "Finish Mode Automatic" ?

[<en...@ic...>]

On Thu, Feb 28, 2002 at 02:51:05PM +0000, Juli?n Mu?oz wrote:
> What means "Finish Mode Automatic" ?

Hi,
sometimes may happen that you need an explicit signal to be sure an
action is terminated, is usefulin embedded environment or in presence of
lot o 'manual' work, maybe it will not be useful for most of OpenFlow
user but we've included this option for WfMC compatibility.
=20
> _______________________________________________
> Openflow-dev mailing list
> Ope...@li...
> https://lists.sourceforge.net/lists/listinfo/openflow-dev

--=20
Vincenzo Di Somma - Responsabile Ricerca e Sviluppo - Icube S.r.l.
Sede:   Via Ridolfi 15 - 56124 Pisa (PI), Italia
E-mail: e.d...@ic...              WWW: www.icube.it
Tel:    (+39) 050 97 02 07              Fax: (+39) 050 31 36 588