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3 # Copyright (c) 2019 Nokia
4 # Copyright (c) 2018-2019 AT&T Intellectual Property.
6 # Licensed under the Apache License, Version 2.0 (the "License");
7 # you may not use this file except in compliance with the License.
8 # You may obtain a copy of the License at
10 # http://www.apache.org/licenses/LICENSE-2.0
12 # Unless required by applicable law or agreed to in writing, software
13 # distributed under the License is distributed on an "AS IS" BASIS,
14 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 # See the License for the specific language governing permissions and
16 # limitations under the License.
17 #==================================================================================
21 Source for the RIC Messaging Library -- RMR.
23 C does not provide the concept of package names, yet we have
24 a desire not to maintain all of the static code in a single large
25 file, we use the following convention:
27 <name>.c -- C code which builds separately and generates an object
28 that is ultimately added to the archive.
30 <name>_static.c - File containing nothing but static functions (a.k.a package
31 only functions). These files should be included by other *.c
32 files and should not generate object.
34 <name>.h Header file that user applications are expected to include
35 in order to make use of the library
37 <name>_inline.h Header files containing inline static functions that the
38 user application is expected to include.
40 <name>_private.h Header file meant only to be included by the package.
42 Further, as this code is used to generate both a Nanomsg and NNG based version,
43 there are some modules which are specific to the underlying transport being
44 used. The original code was based on Nanomsg, thus any changes resulting from
45 the port to NNG, are in files with the same name plus _nng (e.g. rtable_static.c
46 is the original module, and rrable_nng_static.c is the NNG version).
50 All externally facing function names and constants will start with rmr_ or
51 RMR_ repsectively (RIC Message Router). For the time being, there is a
52 set of mappings from the old uta_* names to rmr_* names. The user code must
53 define UTA_COMPAT to have these ensbled.
56 Internal (static) functions have no mandiated convention. There are some
57 names which are prefixed with uta_. These are left over from the original
58 prototype libray which had the name Uta. The uta_ prefixes were mostly on
59 functions which were iniitally external, but were pulled back for this release.
64 To build the RMR libraries, both Nanomsg and NNG must be installed, and if not
65 installed in the standard places (e.g. /usr/local/include and /usr/local/lib),
66 then the proper references must be made in C_INCLUDE_PATH, and LD_LIBRARY_PATH.
68 To install see the instructions on their html sites:
69 https://github.com/nanomsg/nng
70 https://nanomsg.org/download.html
74 The script ../test/utest.ksh should be used for running unit tests. With no
75 parameters it will attempt to build any file in this directory which has the
76 name *_test.c. Build is attempted with either mk or make and enables the
77 necessary compiler flags to support coverage output (gcov). Once built, the
78 test programme is executed and if the return code is success (0), the
79 coverage data is interpreted.
81 The test programmes may make use of ../test/tools.c which provide simple
82 validation check functions. These programmes shouild also directly include
83 the module(s) under test. This ensures that they are not linked, and are
84 compiled with the proper coverage flags. In addition, it allows modules that
85 are not under test to be linked from the archive and (most importantly) not
86 reported on from a coverage perspective. In cases where two modules depend on
87 each other, and are static functions, they will need to be tested from a single
88 unit test programme (see the rt_tool test programme).
90 It might be necessary to write a higher level test driver as some of the modules
91 (e.g. route table) have threaded daemons which might not be easy to drive
92 completely or at all, and thus the code coverage for a passing test might need
93 to be lower for this type of module.