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PROTON-????: Support building python extension with unbundled proton
There are 3 cases: * Bundled proton library - this should be the default and is what you should use with pip etc. * System proton library - this is what you should use in a distro package - esp. Fedora/RHEL pr Debian too? * In dev tree - should build with the in dev tree proton lib for debugging.
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| # | ||
| # Licensed to the Apache Software Foundation (ASF) under one | ||
| # or more contributor license agreements. See the NOTICE file | ||
| # distributed with this work for additional information | ||
| # regarding copyright ownership. The ASF licenses this file | ||
| # to you under the Apache License, Version 2.0 (the | ||
| # "License"); you may not use this file except in compliance | ||
| # with the License. You may obtain a copy of the License at | ||
| # | ||
| # http://www.apache.org/licenses/LICENSE-2.0 | ||
| # | ||
| # Unless required by applicable law or agreed to in writing, | ||
| # software distributed under the License is distributed on an | ||
| # "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY | ||
| # KIND, either express or implied. See the License for the | ||
| # specific language governing permissions and limitations | ||
| # under the License. | ||
| # | ||
|
|
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| import cffi.pkgconfig | ||
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| from cffi import FFI | ||
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| ffibuilder = FFI() | ||
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| # cdef() expects a single string declaring the C types, functions and | ||
| # globals needed to use the shared object. It must be in valid C syntax | ||
| # with cffi extensions | ||
| cdefs = open('cproton.h').read() | ||
| ffibuilder.cdef(cdefs) | ||
|
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| pkgconfig = [] | ||
| sources = [] | ||
| extra = [] | ||
| libraries = [] | ||
| include_dirs = [] | ||
| macros = [] | ||
|
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| try: | ||
| proton_pkgcfg = cffi.pkgconfig.flags_from_pkgconfig(['libqpid-proton-core']) | ||
| pkgconfig.append('libqpid-proton-core') | ||
| except cffi.pkgconfig.PkgConfigError: | ||
| pass | ||
|
|
||
| c_code = r""" | ||
| #include "proton/version.h" | ||
| #include "proton/types.h" | ||
| #include "proton/object.h" | ||
| #include "proton/error.h" | ||
| #include "proton/condition.h" | ||
| #include "proton/connection.h" | ||
| #include "proton/session.h" | ||
| #include "proton/link.h" | ||
| #include "proton/terminus.h" | ||
| #include "proton/delivery.h" | ||
| #include "proton/disposition.h" | ||
| #include "proton/transport.h" | ||
| #include "proton/event.h" | ||
| #include "proton/message.h" | ||
| #include "proton/sasl.h" | ||
| #include "proton/ssl.h" | ||
| #include "proton/codec.h" | ||
| #include "proton/connection_driver.h" | ||
| #include "proton/cid.h" | ||
| static void pn_pyref_incref(void *object); | ||
| static void pn_pyref_decref(void *object); | ||
| static int pn_pyref_refcount(void *object) { | ||
| return 1; | ||
| } | ||
| pn_connection_t *pn_cast_pn_connection(void *x) { return (pn_connection_t *) x; } | ||
| pn_session_t *pn_cast_pn_session(void *x) { return (pn_session_t *) x; } | ||
| pn_link_t *pn_cast_pn_link(void *x) { return (pn_link_t *) x; } | ||
| pn_delivery_t *pn_cast_pn_delivery(void *x) { return (pn_delivery_t *) x; } | ||
| pn_transport_t *pn_cast_pn_transport(void *x) { return (pn_transport_t *) x; } | ||
| static pn_class_t* PN_PYREF; | ||
| PN_HANDLE(PN_PYCTX); | ||
| static pn_class_t* pn_create_pyref() { | ||
| return pn_class_create("pn_pyref", NULL, NULL, pn_pyref_incref, pn_pyref_decref, pn_pyref_refcount); | ||
| } | ||
| pn_event_t *pn_collector_put_py(pn_collector_t *collector, void *context, pn_event_type_t type) { | ||
| return pn_collector_put(collector, PN_PYREF, context, type); | ||
| } | ||
| void pn_record_def_py(pn_record_t *record) { | ||
| pn_record_def(record, PN_PYCTX, PN_PYREF); | ||
| } | ||
| void *pn_record_get_py(pn_record_t *record) { | ||
| return pn_record_get(record, PN_PYCTX); | ||
| } | ||
| void pn_record_set_py(pn_record_t *record, void *value) { | ||
| pn_record_set(record, PN_PYCTX, value); | ||
| } | ||
| ssize_t pn_message_encode_py(pn_message_t *msg, char *bytes, size_t size) { | ||
| int err = pn_message_encode(msg, bytes, &size); | ||
| if (err == 0) return size; | ||
| else return err; | ||
| } | ||
| ssize_t pn_data_format_py(pn_data_t *data, char *bytes, size_t size) { | ||
| int err = pn_data_format(data, bytes, &size); | ||
| if (err == 0) return size; | ||
| else return err; | ||
| } | ||
| int pn_ssl_get_peer_hostname_py(pn_ssl_t *ssl, char *hostname, size_t size) { | ||
| return pn_ssl_get_peer_hostname(ssl, hostname, &size); | ||
| } | ||
| const char *pn_event_class_name_py(pn_event_t *event) { | ||
| const pn_class_t *class = pn_event_class(event); | ||
| return class ? pn_class_name(class) : 0; | ||
| } | ||
| void init() { | ||
| PN_PYREF = pn_create_pyref(); | ||
| } | ||
| """ | ||
|
|
||
| ffibuilder.set_source_pkgconfig( | ||
| "cproton_ffi", | ||
| pkgconfig, | ||
| c_code, | ||
| define_macros=macros, | ||
| extra_compile_args=extra, | ||
| sources=sources, | ||
| include_dirs=include_dirs | ||
| ) | ||
|
|
||
| if __name__ == "__main__": | ||
| ffibuilder.compile(verbose=True) |