Hi, I have shared the finalized draft proposal via the Google Summer of Code Web Portal. Kindly let me know if any changes are required. Hoping to submit the final proposal with changes based on your feedback.
Regards, Madhawa On Fri, Mar 24, 2017 at 4:15 PM, Madhawa Vidanapathirana < [email protected]> wrote: > 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 <[email protected]> > wrote: > >> Good to know that it worked :) >> >> Regards >> Suho >> >> On Wed, Mar 22, 2017 at 11:24 PM, Madhawa Vidanapathirana < >> [email protected]> 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 < >>> [email protected]> 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 < >>>> [email protected]> wrote: >>>> >>>>> >>>>> >>>>> On Sun, Mar 19, 2017 at 4:02 PM, Madhawa Vidanapathirana < >>>>> [email protected]> 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 < >>>>>> [email protected]> 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 < >>>>>>> [email protected]> 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 < >>>>>>>> [email protected]> wrote: >>>>>>>> >>>>>>>>> Great, do also start working on writing the project proposal. >>>>>>>>> >>>>>>>>> Regards >>>>>>>>> Suho >>>>>>>>> >>>>>>>>> On Wed, Mar 15, 2017 at 10:58 PM, Madhawa Vidanapathirana < >>>>>>>>> [email protected]> 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/pyjniu >>>>>>>>>> s/blob/master/docs/source/index.rst >>>>>>>>>> >>>>>>>>>> Regards, >>>>>>>>>> Madhawa >>>>>>>>>> >>>>>>>>>> On Wed, Mar 15, 2017 at 1:11 AM, Sriskandarajah Suhothayan < >>>>>>>>>> [email protected]> 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 < >>>>>>>>>>> [email protected]> 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 < >>>>>>>>>>>> [email protected]> wrote: >>>>>>>>>>>> >>>>>>>>>>>>> >>>>>>>>>>>>> >>>>>>>>>>>>> On Sun, Mar 12, 2017 at 12:37 PM, Madhawa Vidanapathirana < >>>>>>>>>>>>> [email protected]> 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: [email protected] >>>>>>>>>>>>>> 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: [email protected] >>>>>>>>>>>> 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: [email protected] >>>>>>>>>> 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: [email protected] >>>>>>>> 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: [email protected] >>>>>> 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: [email protected] >>>> 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: [email protected] >>> 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 <+94%2071%20687%204425> > Email: [email protected] > 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 Email: [email protected] Linked-In: https://lk.linkedin.com/in/madhawa-vidanapathirana-3430b94
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