[HICN-488] Adding lock to vapi calls and manage vapi_connect in order to connect only once.

- Added library to hicn-plugin called safe_vapi that takes care of handling concurrent calls to the vapi.
- Removed dependency of libhicnctrl from libtransport and added dependency to safe_vapi.
- Added dependency to safe_vapi on libhicnctrl

Change-Id: Ie49e8319f64a50e7ed6a56e041db977c3b184cc5
Signed-off-by: Alberto Compagno <acompagn+fdio@cisco.com>

1 files changed, 40 insertions, 0 deletions

diff --git a/cmake/Modules/FindSafeVapi.cmake b/cmake/Modules/FindSafeVapi.cmake
new file mode 100644
index 000000000..a9077ae14
--- /dev/null
+++ b/cmake/Modules/FindSafeVapi.cmake
@@ -0,0 +1,40 @@
+# Copyright (c) 2019 Cisco and/or its affiliates.
+# 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.
+
+set(SAFE_VAPI_SEARCH_PATH_LIST
+  ${SAFE_VAPI_HOME}
+  $ENV{SAFE_VAPI_HOME}
+  /usr/local
+  /opt
+  /usr
+)
+
+find_path(SAFE_VAPI_INCLUDE_DIR vapi/vapi_safe.h
+	HINTS ${SAFE_VAPI_SEARCH_PATH_LIST}
+  PATH_SUFFIXES include
+  DOC "Find the vapi_safe includes"
+)
+
+find_library(SAFE_VAPI_LIBRARY NAMES libsafe_vapi.so
+	HINTS ${SAFE_VAPI_SEARCH_PATH_LIST}
+  PATH_SUFFIXES lib/x86_64-linux-gnu/
+  DOC "Find the vapi safe lib"
+)
+
+set(SAFE_VAPI_LIBRARIES ${SAFE_VAPI_LIBRARY})
+set(SAFE_VAPI_INCLUDE_DIRS ${SAFE_VAPI_INCLUDE_DIR})
+
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(Hicnlight SAFE_VAPI_LIBRARIES SAFE_VAPI_INCLUDE_DIRS)
+
+mark_as_advanced(SAFE_VAPI_LIBRARY SAFE_VAPI_INCLUDE_DIR)