zsys access from python #1684

diorcety · 2017-06-13T16:34:59Z

There is no way to access zsys_* functions from python binding

bluca · 2017-06-13T16:36:56Z

Yes that is a known problem, since they are not generated by zproject there's no binding generation. No idea how we can solve it.

diorcety · 2017-06-13T16:46:39Z

I have an issue on Windows. Either a crash or a stall (after last python code)

zsys_shutdown is called atexit.
But something is done before atexit by python internal code (WSACleanup?)
This lead to this issue: https://lists.zeromq.org/pipermail/zeromq-dev/2016-March/030059.html

if i call

    import ctypes
    lib = ctypes.cdll.LoadLibrary('libczmq')
    lib.zsys_shutdown.restype = None
    lib.zsys_shutdown.argtypes = []
    lib.zsys_shutdown()

at the end of my python program, i have no issue at all...

bluca · 2017-06-13T16:49:26Z

I thought there was no atexit on windows?

bluca · 2017-06-13T16:51:32Z

That was with a DLL build though, might not be your case:
#1608
zeromq/zproject#836

jemc · 2017-06-13T17:00:32Z

Yes that is a known problem, since they are not generated by zproject there's no binding generation. No idea how we can solve it.

Is there a deficiency in zproject or oddity about zsys that prevents someone writing the zproject API def for it? Since there is no zsys class instance, I think that just means all of the methods would be singleton methods, as described here:

https://github.com/zeromq/zproject/blob/dfb1af34e52350cd6a94956f618e41611c8eb152/api/myclass.api#L99

bluca · 2017-06-13T17:02:53Z

Honestly not sure. Perhaps it's simply that nobody has tried to convert it until now. PRs welcome as usual :-)

jemc · 2017-06-13T17:03:54Z

Right, I just wanted to see if there was a known deficiency in the zproject API model, since I helped design it (however many years ago).

jemc · 2017-06-13T17:05:10Z

So @diorcety if you wanted to try your hand at writing an API def for zsys to go in this directory, you could generate the bindings you crave - and let us know if you get stuck and need to ask questions about how it works.

diorcety · 2017-06-15T07:23:58Z

I manage do create the api. but i have two issues. First one:
(zproject_nodejs.gsl 704) Undefined expression:
Second one: Even if I skip nodejs, python binding is not built.

sappo · 2017-06-15T15:58:31Z

Push your changes to your fork and I'll have a look at it. Am 15.06.2017 09:23 schrieb "Diorcet Yann" <notifications@github.com>: I manage do create the api. but i have two issues. First one: (zproject_nodejs.gsl 704) Undefined expression: Second one: Even if I skip nodejs, python binding is not built. — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#1684 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AAeGugJVFIkUYcySPwzI_AArp4WqsLBuks5sENwPgaJpZM4N4wFW> .

bluca · 2017-06-15T18:07:44Z

I found the problem: zeromq/zproject#912

bluca · 2017-06-15T19:18:12Z

Now the Python test errors with:

Traceback (most recent call last):
  File "bindings/python/test.py", line 5, in <module>
    from czmq import *
  File "/home/lboccass/git/czmq/bindings/python/czmq/__init__.py", line 3, in <module>
    from ._czmq_ctypes import *
  File "/home/lboccass/git/czmq/bindings/python/czmq/_czmq_ctypes.py", line 7138, in <module>
    lib.zsys_udp_send.argtypes = [socket_p, zframe_p, None, c_int]
TypeError: item 3 in _argtypes_ has no from_param method

diorcety · 2017-06-15T19:58:41Z

Certainly due to inaddr_t

bluca · 2017-06-15T19:59:59Z

I guess we have to fix it in zproject?

diorcety · 2017-06-15T20:12:19Z

or remove this method from the api too

bluca · 2017-06-15T20:46:04Z

I guess the only problem is that the inaddr_t type is not supported - that would be worth adding

bluca · 2017-06-16T11:11:22Z

The problem was that the "type" was not specified together with the "c_type", so zproject's Python generation was not happy: #1688

@sappo now the last thing to fix is JNI, any idea what this is all about:

:compileJava/home/travis/build/bluca/czmq/bindings/jni/src/main/java/org/zeromq/czmq/Zsys.java:384: error: <identifier> expected
    public String interface () {
                 ^
/home/travis/build/bluca/czmq/bindings/jni/src/main/java/org/zeromq/czmq/Zsys.java:384: error: illegal start of type
    public String interface () {
                            ^
/home/travis/build/bluca/czmq/bindings/jni/src/main/java/org/zeromq/czmq/Zsys.java:384: error: <identifier> expected
    public String interface () {
                             ^
/home/travis/build/bluca/czmq/bindings/jni/src/main/java/org/zeromq/czmq/Zsys.java:384: error: ';' expected
    public String interface () {
                              ^
/home/travis/build/bluca/czmq/bindings/jni/src/main/java/org/zeromq/czmq/Zsys.java:385: error: illegal start of type
        return __interface ();
        ^
/home/travis/build/bluca/czmq/bindings/jni/src/main/java/org/zeromq/czmq/Zsys.java:393: error: class, interface, or enum expected
    native static void __setIpv6Address (String value);
                  ^
/home/travis/build/bluca/czmq/bindings/jni/src/main/java/org/zeromq/czmq/Zsys.java:394: error: class, interface, or enum expected
    public void setIpv6Address (String value) {
           ^
/home/travis/build/bluca/czmq/bindings/jni/src/main/java/org/zeromq/czmq/Zsys.java:396: error: class, interface, or enum expected
    }
    ^
/home/travis/build/bluca/czmq/bindings/jni/src/main/java/org/zeromq/czmq/Zsys.java:401: error: class, interface, or enum expected
    public String ipv6Address () {
           ^
/home/travis/build/bluca/czmq/bindings/jni/src/main/java/org/zeromq/czmq/Zsys.java:403: error: class, interface, or enum expected
    }
    ^
/home/travis/build/bluca/czmq/bindings/jni/src/main/java/org/zeromq/czmq/Zsys.java:411: error: class, interface, or enum expected
    public void setIpv6McastAddress (String value) {
           ^
/home/travis/build/bluca/czmq/bindings/jni/src/main/java/org/zeromq/czmq/Zsys.java:413: error: class, interface, or enum expected
    }
    ^
/home/travis/build/bluca/czmq/bindings/jni/src/main/java/org/zeromq/czmq/Zsys.java:419: error: class, interface, or enum expected
    public String ipv6McastAddress () {
           ^
/home/travis/build/bluca/czmq/bindings/jni/src/main/java/org/zeromq/czmq/Zsys.java:421: error: class, interface, or enum expected
    }
    ^
/home/travis/build/bluca/czmq/bindings/jni/src/main/java/org/zeromq/czmq/Zsys.java:431: error: class, interface, or enum expected
    public void setAutoUseFd (int autoUseFd) {
           ^
/home/travis/build/bluca/czmq/bindings/jni/src/main/java/org/zeromq/czmq/Zsys.java:433: error: class, interface, or enum expected
    }
    ^
/home/travis/build/bluca/czmq/bindings/jni/src/main/java/org/zeromq/czmq/Zsys.java:438: error: class, interface, or enum expected
    public int autoUseFd () {
           ^
/home/travis/build/bluca/czmq/bindings/jni/src/main/java/org/zeromq/czmq/Zsys.java:440: error: class, interface, or enum expected
    }
    ^
/home/travis/build/bluca/czmq/bindings/jni/src/main/java/org/zeromq/czmq/Zsys.java:447: error: class, interface, or enum expected
    public void setLogident (String value) {
           ^
/home/travis/build/bluca/czmq/bindings/jni/src/main/java/org/zeromq/czmq/Zsys.java:449: error: class, interface, or enum expected
    }
    ^
/home/travis/build/bluca/czmq/bindings/jni/src/main/java/org/zeromq/czmq/Zsys.java:460: error: class, interface, or enum expected
    public void setLogsender (String endpoint) {
           ^
/home/travis/build/bluca/czmq/bindings/jni/src/main/java/org/zeromq/czmq/Zsys.java:462: error: class, interface, or enum expected
    }
    ^
/home/travis/build/bluca/czmq/bindings/jni/src/main/java/org/zeromq/czmq/Zsys.java:468: error: class, interface, or enum expected
    public void setLogsystem (boolean logsystem) {
           ^
/home/travis/build/bluca/czmq/bindings/jni/src/main/java/org/zeromq/czmq/Zsys.java:470: error: class, interface, or enum expected
    }
    ^
/home/travis/build/bluca/czmq/bindings/jni/src/main/java/org/zeromq/czmq/Zsys.java:475: error: class, interface, or enum expected
    public void error (String format) {
           ^
/home/travis/build/bluca/czmq/bindings/jni/src/main/java/org/zeromq/czmq/Zsys.java:477: error: class, interface, or enum expected
    }
    ^
/home/travis/build/bluca/czmq/bindings/jni/src/main/java/org/zeromq/czmq/Zsys.java:482: error: class, interface, or enum expected
    public void warning (String format) {
           ^
/home/travis/build/bluca/czmq/bindings/jni/src/main/java/org/zeromq/czmq/Zsys.java:484: error: class, interface, or enum expected
    }
    ^
/home/travis/build/bluca/czmq/bindings/jni/src/main/java/org/zeromq/czmq/Zsys.java:489: error: class, interface, or enum expected
    public void notice (String format) {
           ^
/home/travis/build/bluca/czmq/bindings/jni/src/main/java/org/zeromq/czmq/Zsys.java:491: error: class, interface, or enum expected
    }
    ^
/home/travis/build/bluca/czmq/bindings/jni/src/main/java/org/zeromq/czmq/Zsys.java:496: error: class, interface, or enum expected
    public void info (String format) {
           ^
/home/travis/build/bluca/czmq/bindings/jni/src/main/java/org/zeromq/czmq/Zsys.java:498: error: class, interface, or enum expected
    }
    ^
/home/travis/build/bluca/czmq/bindings/jni/src/main/java/org/zeromq/czmq/Zsys.java:503: error: class, interface, or enum expected
    public void debug (String format) {
           ^
/home/travis/build/bluca/czmq/bindings/jni/src/main/java/org/zeromq/czmq/Zsys.java:505: error: class, interface, or enum expected
    }
    ^
/home/travis/build/bluca/czmq/bindings/jni/src/main/java/org/zeromq/czmq/Zsys.java:510: error: class, interface, or enum expected
    public static void test (boolean verbose) {
                  ^
/home/travis/build/bluca/czmq/bindings/jni/src/main/java/org/zeromq/czmq/Zsys.java:512: error: class, interface, or enum expected
    }
    ^
36 errors
 FAILED

https://travis-ci.org/bluca/czmq/jobs/243624361

jemc · 2017-06-16T11:19:32Z

Seems like at least the first error is due to interface being a reserved word in Java. The zproject code generator needs to obfuscate reserved words in the target language when they appear as method names

diorcety · 2017-06-16T13:42:56Z

Sorry I triggerd lot of issues :s

bluca · 2017-06-16T13:45:48Z

eheh no worries, on the contrary it's good, many issues fixed

stale · 2018-11-10T10:36:23Z

This issue has been automatically marked as stale because it has not had recent activity for 90 days. It will be closed if no further activity occurs within 21 days. Thank you for your contributions.

diorcety mentioned this issue Jun 15, 2017

Introduce zsys.api #1685

Merged

stale bot added the stale label Nov 10, 2018

stale bot closed this as completed Dec 1, 2018

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zsys access from python #1684

zsys access from python #1684

diorcety commented Jun 13, 2017

bluca commented Jun 13, 2017

diorcety commented Jun 13, 2017 •

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bluca commented Jun 13, 2017

bluca commented Jun 13, 2017

jemc commented Jun 13, 2017

bluca commented Jun 13, 2017

jemc commented Jun 13, 2017

jemc commented Jun 13, 2017

diorcety commented Jun 15, 2017

sappo commented Jun 15, 2017 via email

bluca commented Jun 15, 2017

bluca commented Jun 15, 2017

diorcety commented Jun 15, 2017

bluca commented Jun 15, 2017

diorcety commented Jun 15, 2017

bluca commented Jun 15, 2017

bluca commented Jun 16, 2017

jemc commented Jun 16, 2017

diorcety commented Jun 16, 2017

bluca commented Jun 16, 2017

stale bot commented Nov 10, 2018

zsys access from python #1684

zsys access from python #1684

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diorcety commented Jun 13, 2017 •

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