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-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 <+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 Email: madhawavidanapathir...@gmail.com Linked-In: https://lk.linkedin.com/in/madhawa-vidanapathirana-3430b94
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