Hi, Good news.
Requested a release from Pyjnius Developer Team [1] and managed to get a new release [2] to Python Package Index (PIP). Therefore, we no longer have to develop their library from GitHub code. We can simply consider it as a dependency which gets auto installed when our final product is deployed. [1] - https://github.com/kivy/pyjnius/issues/189#issuecomment-288750222 [2] - https://pypi.python.org/pypi/pyjnius/1.1.1 Pyjnius is a library which can be used for calling Java methods from Python and obtaining callback responses. It uses native method calls. Regards, Madhawa On Thu, Mar 23, 2017 at 1:48 AM, Sriskandarajah Suhothayan <s...@wso2.com> wrote: > 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/Pyj >> nius_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-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 <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 <+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 Email: madhawavidanapathir...@gmail.com Linked-In: https://lk.linkedin.com/in/madhawa-vidanapathirana-3430b94
_______________________________________________ Dev mailing list Dev@wso2.org http://wso2.org/cgi-bin/mailman/listinfo/dev
