Good to know that it worked :) Regards Suho
On Wed, Mar 22, 2017 at 11:24 PM, Madhawa Vidanapathirana < madhawavidanapathir...@gmail.com> wrote: > Hi Suho, > > Got the prototype working with Python 3 as well. Refer the link below for > sources. > > https://github.com/madhawav/CEP-Python-Wraps/tree/master/ > Pyjnius_Prototype_Wrap_Python2_3 > > This version works with both Python 2.7 and 3.x. (Tested on 2.7 and 3.5). > Uses native calls via Pyjnius API. > > Please note: When you are installing Pyjnius from source, don't use the > same local copy of source files for both Python2 and Python3. The install > scripts of Pyjnius leaves temporary files that make subsequent installs on > a different version of Python fail. > > Regards, > Madhawa > > > On Mon, Mar 20, 2017 at 12:44 PM, Madhawa Vidanapathirana < > madhawavidanapathir...@gmail.com> wrote: > >> Hi Suho, >> >> Installation via PIP can be done. I will add it to Project Proposal. >> >> Regards, >> Madhawa >> >> On Mon, Mar 20, 2017 at 11:25 AM, Sriskandarajah Suhothayan < >> s...@wso2.com> wrote: >> >>> >>> >>> On Sun, Mar 19, 2017 at 4:02 PM, Madhawa Vidanapathirana < >>> madhawavidanapathir...@gmail.com> wrote: >>> >>>> Hi Suho, >>>> >>>> Going ahead with the proposal, few questions crossed my mind. >>>> >>>> 1. You mentioned previously that WSO2 DAS should also be supported. >>>> What sort of interactions are expected with WSO2 DAS? >>>> 1. Should publishing events to WSO2 DAS from Python Siddhi API >>>> supported? >>>> 2. Should deploying of Siddhi Queries to WSO2 DAS through Python >>>> Siddhi API be supported? >>>> 3. Any other expectations? >>>> >>>> >>> For the integration with DAS we can use HTTP calls and deploy Siddhi >>> queries and send events to that, we should also start a server from the >>> python side to receive events from DAS and print them. >>> >>> We can work on the details of that after the proposal. >>> >>> One more thing to add, can we also implement Siddhi (the project you >>> will be creating) to be installed via pip ? >>> >>> Regards >>> Suho >>> >>> If any of above can be considered as "optional", indicate them as well. >>>> >>>> Regards, >>>> Madhawa >>>> >>>> On Sat, Mar 18, 2017 at 9:00 PM, Sriskandarajah Suhothayan < >>>> s...@wso2.com> wrote: >>>> >>>>> For the initial cut this looks good, please go ahead with the >>>>> proposal. Let's check some other alternatives and start the development. >>>>> >>>>> Regards >>>>> Suho >>>>> >>>>> On Sat, Mar 18, 2017 at 1:01 PM, Madhawa Vidanapathirana < >>>>> madhawavidanapathir...@gmail.com> wrote: >>>>> >>>>>> Hi Suho, >>>>>> >>>>>> You can find the python version of test case written using Pyjnius in >>>>>> below link. >>>>>> https://github.com/madhawav/CEP-Python-Wraps/tree/master/Pyj >>>>>> nius%20Prototype%20Wrap >>>>>> Instructions on building the code is also given their. >>>>>> >>>>>> During development, I noticed following disadvantages of Pyjnius API >>>>>> >>>>>> - Not compatible with Python 3.x. >>>>>> - There are no stable releases. However, the code available in >>>>>> master branch is relatively stable. >>>>>> - Difficult to configure. It is required to develop the library >>>>>> from source. This would make it difficult to distribute an API >>>>>> developed on >>>>>> Pyjnius. >>>>>> - There are no evidence that a proper release would be done soon. >>>>>> >>>>>> However, Pyjnius supports callback of events from Java to Python. >>>>>> Additionally, it is easier to develop using Pyjnius ones it is >>>>>> configured. >>>>>> >>>>>> So, I had a looked at some of the other options as well. >>>>>> >>>>>> Java Bridge >>>>>> >>>>>> *Advantages* >>>>>> >>>>>> - Has stable releases available through Python Package Index. >>>>>> (pip) >>>>>> >>>>>> *Disadvantages* >>>>>> >>>>>> - No direct call-back mechanism to receive events from Java side. >>>>>> It is possible to execute Python scripts in Java but those scripts >>>>>> would >>>>>> not be in same context as Python Host App. >>>>>> - Comparatively harder to develop on but it is manageable. >>>>>> >>>>>> Py4J >>>>>> >>>>>> The main difference in Py4J is that it uses socket connections to >>>>>> communicate with JVM instead of JNI. (secured socket connections are >>>>>> possible). >>>>>> >>>>>> *Advantages* >>>>>> >>>>>> - Stable release available through Python Package Index (pip). >>>>>> Easy to configure. >>>>>> - Can connect to an already running Java application (with Py4J) >>>>>> and communicate with it. (Thus, can be used to communicate with a >>>>>> running >>>>>> instance of WSO2 CEP) >>>>>> - Supports callback events. >>>>>> - Well maintained documentation. Active project. >>>>>> >>>>>> *Disadvantages* >>>>>> >>>>>> - Would require a work-around to avoid clashing between socket >>>>>> connection ports when concurrent applications use the API. >>>>>> >>>>>> As of now, I feel Py4J is the most suitable option. However, I am yet >>>>>> to look at some other options available such as JPy and JCC. >>>>>> >>>>>> Regards, >>>>>> >>>>>> Madhawa >>>>>> >>>>>> On Wed, Mar 15, 2017 at 11:10 PM, Sriskandarajah Suhothayan < >>>>>> s...@wso2.com> wrote: >>>>>> >>>>>>> Great, do also start working on writing the project proposal. >>>>>>> >>>>>>> Regards >>>>>>> Suho >>>>>>> >>>>>>> On Wed, Mar 15, 2017 at 10:58 PM, Madhawa Vidanapathirana < >>>>>>> madhawavidanapathir...@gmail.com> wrote: >>>>>>> >>>>>>>> Hi Suho, >>>>>>>> Progress made so far is managed to write a python version of test >>>>>>>> case you suggested using Pyjnius [1] [2]. >>>>>>>> Pyjnius is capable of handling method calls and callbacks to/from >>>>>>>> JAVA via JNI. >>>>>>>> >>>>>>>> I will send the code here after I properly arrange it into a >>>>>>>> prototype API. >>>>>>>> >>>>>>>> [1] - https://pyjnius.readthedocs.io/en/latest/index.html >>>>>>>> [2] - https://github.com/kivy/pyjnius/blob/master/docs/source/inde >>>>>>>> x.rst >>>>>>>> >>>>>>>> Regards, >>>>>>>> Madhawa >>>>>>>> >>>>>>>> On Wed, Mar 15, 2017 at 1:11 AM, Sriskandarajah Suhothayan < >>>>>>>> s...@wso2.com> wrote: >>>>>>>> >>>>>>>>> As the first step focus on building APIs such that we can >>>>>>>>> write the following test case[1] in python. >>>>>>>>> >>>>>>>>> [1]https://github.com/wso2/siddhi/blob/master/modules/siddhi >>>>>>>>> -samples/quick-start-samples/src/main/java/org/wso2/siddhi/s >>>>>>>>> ample/SimpleFilterSample.java >>>>>>>>> >>>>>>>>> Regards >>>>>>>>> Suho >>>>>>>>> >>>>>>>>> On Tue, Mar 14, 2017 at 9:55 AM, Madhawa Vidanapathirana < >>>>>>>>> madhawavidanapathir...@gmail.com> wrote: >>>>>>>>> >>>>>>>>>> Hi, >>>>>>>>>> Thank you for your quick reply. >>>>>>>>>> >>>>>>>>>> Since directly using Siddhi Library is the more general case, >>>>>>>>>> I'll first focus on it. >>>>>>>>>> >>>>>>>>>> 1) I am thinking about following the same structure in JAVA API, >>>>>>>>>> centered around Siddhi Manager. Any opinions on this? >>>>>>>>>> 2) Any idea on extent to which lower level/internal components >>>>>>>>>> should be exposed? (e.g. - Exposing "StreamDefinition" class in >>>>>>>>>> addition to >>>>>>>>>> creating stream via Siddhi query using "siddhiManager. >>>>>>>>>> createExecutionPlanRuntime"). I have heard that it is usually >>>>>>>>>> discouraged to use lower level components instead of the query >>>>>>>>>> approach. >>>>>>>>>> >>>>>>>>>> Will try to send you a prototype covering basic functionality >>>>>>>>>> through Siddhi Java API, before making the proposal for entire >>>>>>>>>> project. >>>>>>>>>> >>>>>>>>>> Madhawa >>>>>>>>>> >>>>>>>>>> On Mon, Mar 13, 2017 at 9:53 PM, Sriskandarajah Suhothayan < >>>>>>>>>> s...@wso2.com> wrote: >>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> On Sun, Mar 12, 2017 at 12:37 PM, Madhawa Vidanapathirana < >>>>>>>>>>> madhawavidanapathir...@gmail.com> wrote: >>>>>>>>>>> >>>>>>>>>>>> Hi. >>>>>>>>>>>> >>>>>>>>>>>> I am an undergraduate from Department of Computer Science and >>>>>>>>>>>> Engineering, University of Moratuwa. I recently completed my >>>>>>>>>>>> internship at >>>>>>>>>>>> WSO2 working with the Support Team on the project WSO2 Support >>>>>>>>>>>> Knowledge >>>>>>>>>>>> Base. >>>>>>>>>>>> >>>>>>>>>>>> I am interested on GSOC Project* "Proposal 16: Python API for >>>>>>>>>>>> Siddhi CEP"*. My internship project at WSO2 was almost >>>>>>>>>>>> entirely done using Python. Additionally, I used Py4J Framework to >>>>>>>>>>>> interface certain parts of the project to JAVA APIs. Furthermore, >>>>>>>>>>>> I have a >>>>>>>>>>>> certain amount of exposure with Siddhi/CEP through the WHACK >>>>>>>>>>>> project I took >>>>>>>>>>>> part. >>>>>>>>>>>> >>>>>>>>>>>> I went through the provided details in WSO2 GSOC 2017 Project >>>>>>>>>>>> List page and I am interested to know some more details. >>>>>>>>>>>> >>>>>>>>>>>> 1. What version of CEP/Siddhi should be used by the API? >>>>>>>>>>>> >>>>>>>>>>>> You need to support the latest released version of Siddhi and >>>>>>>>>>> DAS which is in DAS 3.1 and also for the latest Siddhi (4.0) >>>>>>>>>>> >>>>>>>>>>>> >>>>>>>>>>>> 1. In the description, does "Service APIs" refer to "Admin >>>>>>>>>>>> Services API" which is usually used by Admin Panel to >>>>>>>>>>>> communicate with CEP? >>>>>>>>>>>> >>>>>>>>>>>> Yes, to deploy the queries and to send and receive events >>>>>>>>>>> >>>>>>>>>>>> >>>>>>>>>>>> 1. Should the Siddhi Python API require WSO2 CEP to be >>>>>>>>>>>> running in order to make Python API usable? >>>>>>>>>>>> >>>>>>>>>>>> Not necessay it should both work with the running CEP/DAS and >>>>>>>>>>> use Siddhi library in the ohter cases. >>>>>>>>>>> >>>>>>>>>>>> >>>>>>>>>>>> 1. Is the Python API expected to do configuring of Siddhi >>>>>>>>>>>> CEP, streaming events to/from Siddhi CEP, or both? >>>>>>>>>>>> >>>>>>>>>>>> Yes in terms of queries. >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>>> Thank You >>>>>>>>>>>> >>>>>>>>>>>> >>>>>>>>>>>> -- >>>>>>>>>>>> *Madhawa Vidanapathirana* >>>>>>>>>>>> Student >>>>>>>>>>>> Department of Computer Science and Engineering >>>>>>>>>>>> University of Moratuwa >>>>>>>>>>>> Sri Lanka >>>>>>>>>>>> >>>>>>>>>>>> Mobile: (+94) 716874425 <071%20687%204425> >>>>>>>>>>>> Email: madhawavidanapathir...@gmail.com >>>>>>>>>>>> Linked-In: https://lk.linkedin.com/in/madhawa-vidanapathiran >>>>>>>>>>>> a-3430b94 >>>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> -- >>>>>>>>>>> >>>>>>>>>>> *S. Suhothayan* >>>>>>>>>>> Associate Director / Architect & Team Lead of WSO2 Complex >>>>>>>>>>> Event Processor >>>>>>>>>>> *WSO2 Inc. *http://wso2.com >>>>>>>>>>> * <http://wso2.com/>* >>>>>>>>>>> lean . enterprise . middleware >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> *cell: (+94) 779 756 757 <+94%2077%20975%206757> | blog: >>>>>>>>>>> http://suhothayan.blogspot.com/ >>>>>>>>>>> <http://suhothayan.blogspot.com/>twitter: >>>>>>>>>>> http://twitter.com/suhothayan <http://twitter.com/suhothayan> | >>>>>>>>>>> linked-in: >>>>>>>>>>> http://lk.linkedin.com/in/suhothayan >>>>>>>>>>> <http://lk.linkedin.com/in/suhothayan>* >>>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> -- >>>>>>>>>> *Madhawa Vidanapathirana* >>>>>>>>>> Student >>>>>>>>>> Department of Computer Science and Engineering >>>>>>>>>> University of Moratuwa >>>>>>>>>> Sri Lanka >>>>>>>>>> >>>>>>>>>> Mobile: (+94) 716874425 <071%20687%204425> >>>>>>>>>> Email: madhawavidanapathir...@gmail.com >>>>>>>>>> Linked-In: https://lk.linkedin.com/in/madhawa-vidanapathiran >>>>>>>>>> a-3430b94 >>>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> -- >>>>>>>>> >>>>>>>>> *S. Suhothayan* >>>>>>>>> Associate Director / Architect & Team Lead of WSO2 Complex Event >>>>>>>>> Processor >>>>>>>>> *WSO2 Inc. *http://wso2.com >>>>>>>>> * <http://wso2.com/>* >>>>>>>>> lean . enterprise . middleware >>>>>>>>> >>>>>>>>> >>>>>>>>> *cell: (+94) 779 756 757 <+94%2077%20975%206757> | blog: >>>>>>>>> http://suhothayan.blogspot.com/ >>>>>>>>> <http://suhothayan.blogspot.com/>twitter: >>>>>>>>> http://twitter.com/suhothayan <http://twitter.com/suhothayan> | >>>>>>>>> linked-in: >>>>>>>>> http://lk.linkedin.com/in/suhothayan >>>>>>>>> <http://lk.linkedin.com/in/suhothayan>* >>>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> -- >>>>>>>> *Madhawa Vidanapathirana* >>>>>>>> Student >>>>>>>> Department of Computer Science and Engineering >>>>>>>> University of Moratuwa >>>>>>>> Sri Lanka >>>>>>>> >>>>>>>> Mobile: (+94) 716874425 <071%20687%204425> >>>>>>>> Email: madhawavidanapathir...@gmail.com >>>>>>>> Linked-In: https://lk.linkedin.com/in/madhawa-vidanapathiran >>>>>>>> a-3430b94 >>>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>> -- >>>>>>> >>>>>>> *S. Suhothayan* >>>>>>> Associate Director / Architect & Team Lead of WSO2 Complex Event >>>>>>> Processor >>>>>>> *WSO2 Inc. *http://wso2.com >>>>>>> * <http://wso2.com/>* >>>>>>> lean . enterprise . middleware >>>>>>> >>>>>>> >>>>>>> *cell: (+94) 779 756 757 <+94%2077%20975%206757> | blog: >>>>>>> http://suhothayan.blogspot.com/ >>>>>>> <http://suhothayan.blogspot.com/>twitter: >>>>>>> http://twitter.com/suhothayan <http://twitter.com/suhothayan> | >>>>>>> linked-in: >>>>>>> http://lk.linkedin.com/in/suhothayan >>>>>>> <http://lk.linkedin.com/in/suhothayan>* >>>>>>> >>>>>> >>>>>> >>>>>> >>>>>> -- >>>>>> *Madhawa Vidanapathirana* >>>>>> Student >>>>>> Department of Computer Science and Engineering >>>>>> University of Moratuwa >>>>>> Sri Lanka >>>>>> >>>>>> Mobile: (+94) 716874425 <071%20687%204425> >>>>>> Email: madhawavidanapathir...@gmail.com >>>>>> Linked-In: https://lk.linkedin.com/in/madhawa-vidanapathirana-3430b94 >>>>>> >>>>> >>>>> >>>>> >>>>> -- >>>>> >>>>> *S. Suhothayan* >>>>> Associate Director / Architect & Team Lead of WSO2 Complex Event >>>>> Processor >>>>> *WSO2 Inc. *http://wso2.com >>>>> * <http://wso2.com/>* >>>>> lean . enterprise . middleware >>>>> >>>>> >>>>> *cell: (+94) 779 756 757 <+94%2077%20975%206757> | blog: >>>>> http://suhothayan.blogspot.com/ <http://suhothayan.blogspot.com/>twitter: >>>>> http://twitter.com/suhothayan <http://twitter.com/suhothayan> | linked-in: >>>>> http://lk.linkedin.com/in/suhothayan >>>>> <http://lk.linkedin.com/in/suhothayan>* >>>>> >>>> >>>> >>>> >>>> -- >>>> *Madhawa Vidanapathirana* >>>> Student >>>> Department of Computer Science and Engineering >>>> University of Moratuwa >>>> Sri Lanka >>>> >>>> Mobile: (+94) 716874425 <071%20687%204425> >>>> Email: madhawavidanapathir...@gmail.com >>>> Linked-In: https://lk.linkedin.com/in/madhawa-vidanapathirana-3430b94 >>>> >>> >>> >>> >>> -- >>> >>> *S. Suhothayan* >>> Associate Director / Architect & Team Lead of WSO2 Complex Event >>> Processor >>> *WSO2 Inc. *http://wso2.com >>> * <http://wso2.com/>* >>> lean . enterprise . middleware >>> >>> >>> *cell: (+94) 779 756 757 <077%20975%206757> | blog: >>> http://suhothayan.blogspot.com/ <http://suhothayan.blogspot.com/>twitter: >>> http://twitter.com/suhothayan <http://twitter.com/suhothayan> | linked-in: >>> http://lk.linkedin.com/in/suhothayan <http://lk.linkedin.com/in/suhothayan>* >>> >> >> >> >> -- >> *Madhawa Vidanapathirana* >> Student >> Department of Computer Science and Engineering >> University of Moratuwa >> Sri Lanka >> >> Mobile: (+94) 716874425 <+94%2071%20687%204425> >> Email: madhawavidanapathir...@gmail.com >> Linked-In: https://lk.linkedin.com/in/madhawa-vidanapathirana-3430b94 >> > > > > -- > *Madhawa Vidanapathirana* > Student > Department of Computer Science and Engineering > University of Moratuwa > Sri Lanka > > Mobile: (+94) 716874425 <071%20687%204425> > Email: madhawavidanapathir...@gmail.com > Linked-In: https://lk.linkedin.com/in/madhawa-vidanapathirana-3430b94 > -- *S. Suhothayan* Associate Director / Architect *WSO2 Inc. *http://wso2.com * <http://wso2.com/>* lean . enterprise . middleware *cell: (+94) 779 756 757 | blog: http://suhothayan.blogspot.com/ <http://suhothayan.blogspot.com/>twitter: http://twitter.com/suhothayan <http://twitter.com/suhothayan> | linked-in: http://lk.linkedin.com/in/suhothayan <http://lk.linkedin.com/in/suhothayan>*
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