Add a utility class to help map ports to interfaces.

Author: benoit-nexthop

cmake/CliFboss2.cmake

@@ -476,6 +476,7 @@ add_library(fboss2_lib
   fboss/cli/fboss2/utils/CLIParserUtils.cpp
   fboss/cli/fboss2/utils/CmdClientUtils.cpp
   fboss/cli/fboss2/utils/CmdUtilsCommon.cpp
+  fboss/cli/fboss2/utils/PortMap.cpp
   fboss/cli/fboss2/utils/Table.cpp
   fboss/cli/fboss2/utils/HostInfo.h
   fboss/cli/fboss2/utils/FilterOp.h

cmake/CliFboss2Test.cmake

@@ -37,6 +37,7 @@ add_executable(fboss2_cmd_test
   # fboss/cli/fboss2/test/CmdShowTransceiverTest.cpp - excluded (depends on configerator bgp namespace)
   fboss/cli/fboss2/test/CmdStartPcapTest.cpp
   fboss/cli/fboss2/test/CmdStopPcapTest.cpp
+  fboss/cli/fboss2/test/PortMapTest.cpp
 )
 
 target_link_libraries(fboss2_cmd_test

fboss/cli/fboss2/BUCK

@@ -766,10 +766,12 @@ cpp_library(
         "CmdListConfig.cpp",
         "commands/config/CmdConfigAppliedInfo.cpp",
         "commands/config/CmdConfigReload.cpp",
+        "utils/PortMap.cpp",
     ],
     headers = [
         "commands/config/CmdConfigAppliedInfo.h",
         "commands/config/CmdConfigReload.h",
+        "utils/PortMap.h",
     ],
     exported_deps = [
         ":cmd-handler",

fboss/cli/fboss2/test/BUCK

@@ -87,6 +87,7 @@ cpp_unittest(
         "CmdShowTransceiverTest.cpp",
         "CmdStartPcapTest.cpp",
         "CmdStopPcapTest.cpp",
+        "PortMapTest.cpp",
     ],
     deps = [
         "fbsource//third-party/googletest:gmock",