--- /dev/null
+#
+#==================================================================================
+# Copyright (c) 2019 Nokia
+# Copyright (c) 2018-2019 AT&T Intellectual Property.
+#
+# Licensed 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.
+#==================================================================================
+#
+
+
+Source for the RIC Messaging Library -- RMR.
+
+C does not provide the concept of package names, yet we have
+a desire not to maintain all of the static code in a single large
+file, we use the following convention:
+
+ <name>.c -- C code which builds separately and generates an object
+ that is ultimately added to the archive.
+
+ <name>_static.c - File containing nothing but static functions (a.k.a package
+ only functions). These files should be included by other *.c
+ files and should not generate object.
+
+ <name>.h Header file that user applications are expected to include
+ in order to make use of the library
+
+ <name>_inline.h Header files containing inline static functions that the
+ user application is expected to include.
+
+ <name>_private.h Header file meant only to be included by the package.
+
+Further, as this code is used to generate both a Nanomsg and NNG based version,
+there are some modules which are specific to the underlying transport being
+used. The original code was based on Nanomsg, thus any changes resulting from
+the port to NNG, are in files with the same name plus _nng (e.g. rtable_static.c
+is the original module, and rrable_nng_static.c is the NNG version).
+
+
+External Names
+All externally facing function names and constants will start with rmr_ or
+RMR_ repsectively (RIC Message Router). For the time being, there is a
+set of mappings from the old uta_* names to rmr_* names. The user code must
+define UTA_COMPAT to have these ensbled.
+
+Internal Names
+Internal (static) functions have no mandiated convention. There are some
+names which are prefixed with uta_. These are left over from the original
+prototype libray which had the name Uta. The uta_ prefixes were mostly on
+functions which were iniitally external, but were pulled back for this release.
+
+
+
+Requirements
+To build the RMR libraries, both Nanomsg and NNG must be installed, and if not
+installed in the standard places (e.g. /usr/local/include and /usr/local/lib),
+then the proper references must be made in C_INCLUDE_PATH, and LD_LIBRARY_PATH.
+
+To install see the instructions on their html sites:
+ https://github.com/nanomsg/nng
+ https://nanomsg.org/download.html
+
+
+Unit Testing
+The script ../test/utest.ksh should be used for running unit tests. With no
+parameters it will attempt to build any file in this directory which has the
+name *_test.c. Build is attempted with either mk or make and enables the
+necessary compiler flags to support coverage output (gcov). Once built, the
+test programme is executed and if the return code is success (0), the
+coverage data is interpreted.
+
+The test programmes may make use of ../test/tools.c which provide simple
+validation check functions. These programmes shouild also directly include
+the module(s) under test. This ensures that they are not linked, and are
+compiled with the proper coverage flags. In addition, it allows modules that
+are not under test to be linked from the archive and (most importantly) not
+reported on from a coverage perspective. In cases where two modules depend on
+each other, and are static functions, they will need to be tested from a single
+unit test programme (see the rt_tool test programme).
+
+It might be necessary to write a higher level test driver as some of the modules
+(e.g. route table) have threaded daemons which might not be easy to drive
+completely or at all, and thus the code coverage for a passing test might need
+to be lower for this type of module.