Re-write sonic-db-cli with c++ for sonic startup performance issue

rules/sonic-db-cli.dep

@@ -0,0 +1,8 @@
+SPATH       := $($(SONIC_DB_CLI)_SRC_PATH)
+DEP_FILES   := $(SONIC_COMMON_FILES_LIST) rules/sonic-db-cli.mk rules/sonic-db-cli.dep   
+DEP_FILES   += $(SONIC_COMMON_BASE_FILES_LIST)
+DEP_FILES   += $(shell git ls-files $(SPATH))
+
+$(BASH)_CACHE_MODE  := GIT_CONTENT_SHA 
+$(BASH)_DEP_FLAGS   := $(SONIC_COMMON_FLAGS_LIST)
+$(BASH)_DEP_FILES   := $(DEP_FILES)

rules/sonic-db-cli.mk

@@ -0,0 +1,15 @@
+# sonic-cli Debian package
+SONIC_DB_CLI_VERSION = 1.0.0
+export SONIC_DB_CLI_VERSION
+
+SONIC_DB_CLI = sonic-db-cli_$(SONIC_DB_CLI_VERSION)_$(CONFIGURED_ARCH).deb
+$(SONIC_DB_CLI)_DEPENDS += $(LIBSWSSCOMMON_DEV)
+$(SONIC_DB_CLI)_RDEPENDS += $(LIBSWSSCOMMON)
+$(SONIC_DB_CLI)_SRC_PATH = $(SRC_PATH)/sonic-db-cli
+
+SONIC_DPKG_DEBS += $(SONIC_DB_CLI)
+
+# The .c, .cpp, .h & .hpp files under src/{$DBG_SRC_ARCHIVE list}
+# are archived into debug one image to facilitate debugging.
+#
+DBG_SRC_ARCHIVE += sonic-db-cli

src/sonic-db-cli/Makefile.am

@@ -0,0 +1,24 @@
+###########################################################################
+##
+## File:        ./Makefile.am
+## Versions:    $Id: Makefile.am,v 1.0 2022/04/02 12:04:29 liuh@microsoft.com Exp $
+## Created:     2022/04/02
+##
+###########################################################################
+ACLOCAL_AMFLAGS = -I m4 --install
+ACLOCAL_AMFLAGS = -I config
+AUTOMAKE_OPTIONS = subdir-objects
+SUBDIRS = tests
+
+bin_PROGRAMS = sonic-db-cli
+sonic_db_cli_SOURCES = sonic-db-cli.h sonic-db-cli.cpp
+sonic_db_cli_CPPFLAGS = $(AM_CPPFLAGS) -std=c++17
+sonic_db_cli_LDFLAGS = -lswsscommon $(BOOST_PROGRAM_OPTIONS_LIB)
+
+EXTRA_DIST = bootstrap sonic-db-cli.spec
+
+MAINTAINERCLEANFILES = Makefile.in config.h.in configure aclocal.m4 \
+                       config/config.guess  config/config.sub  config/depcomp \
+                       config/install-sh config/ltmain.sh config/missing
+
+pkgconfigdir = $(libdir)/pkgconfig

src/sonic-db-cli/configure.ac

@@ -0,0 +1,70 @@
+dnl
+dnl File:        configure.in
+dnl Revision:    $Id: configure.ac,v 1.0 2022/04/02 12:04:29 liuh@microsoft.com Exp $
+dnl Created:     2022/04/02
+dnl Author:      Liu Hua <liuh@microsoft.com>
+dnl
+dnl Process this file with autoconf to produce a configure script
+dnl You need autoconf 2.59 or better!
+dnl
+dnl ---------------------------------------------------------------------------
+
+AC_PREREQ(2.59)
+AC_COPYRIGHT([
+See the included file: COPYING for copyright information.
+])
+AC_INIT(sonic-db-cli, 1.0.0, [liuh@microsoft.com])
+
+AC_CONFIG_AUX_DIR(config)
+AM_INIT_AUTOMAKE([foreign])
+AC_CONFIG_SRCDIR([sonic-db-cli.cpp])
+AC_CONFIG_HEADER([config.h])
+AC_CONFIG_MACRO_DIR([config])
+AC_CONFIG_MACRO_DIR([m4])
+
+dnl --------------------------------------------------------------------
+dnl Checks for programs.
+AC_LANG_C
+AC_LANG([C++])
+AC_PROG_CC
+AC_PROG_CXX
+AM_PROG_CC_C_O
+AC_PROG_INSTALL
+AC_PROG_LN_S
+AC_PROG_MAKE_SET
+AC_ENABLE_SHARED
+AC_DISABLE_STATIC
+AM_PROG_LIBTOOL
+
+dnl --------------------------------------------------------------------
+dnl Checks for libraries.
+AC_CHECK_LIB(swsscommon, conn)
+dnl Check boost libs: https://www.gnu.org/software/autoconf-archive/The-Macros.html#The-Macros
+AX_BOOST_BASE(,, [AC_MSG_ERROR([boost lib missing])])
+AX_BOOST_PROGRAM_OPTIONS
+
+dnl --------------------------------------------------------------------
+dnl Checks for header files.
+AC_HEADER_STDC
+AC_CHECK_HEADER([swss/sonicv2connector.h], [], [AC_MSG_ERROR([swsscommon lib missing. ])] )
+
+dnl --------------------------------------------------------------------
+dnl Checks for typedefs, structures, and compiler characteristics.
+AC_C_CONST
+AC_TYPE_SIZE_T
+AC_HEADER_TIME
+
+dnl --------------------------------------------------------------------
+dnl Checks for library functions.
+AC_FUNC_REALLOC
+AC_FUNC_SELECT_ARGTYPES
+AC_TYPE_SIGNAL
+AC_CHECK_FUNCS([bzero gethostbyname gettimeofday inet_ntoa select socket logwtmp getrandom])
+
+dnl --------------------------------------------------------------------
+dnl Generate made files
+AC_CONFIG_FILES([
+    Makefile
+    tests/Makefile
+])
+AC_OUTPUT

src/sonic-db-cli/debian/changelog

@@ -0,0 +1,5 @@
+sonic-db-cli (1.0.0) unstable; urgency=medium
+
+  * Initial release (Closes: #nnnn)  <nnnn is the bug number of your ITP>
+
+ -- Liu Hua <liuh@microsoft.com>  Wed, 06 Apr 2022 09:21:18 +0000

src/sonic-db-cli/debian/control

@@ -0,0 +1,14 @@
+Source: sonic-db-cli
+Section: unknown
+Priority: optional
+Maintainer: Liu Hua <liuh@microsoft.com>
+Build-Depends: debhelper-compat (= 13)
+Standards-Version: 4.5.1
+Homepage: <insert the upstream URL, if relevant>
+Rules-Requires-Root: no
+
+Package: sonic-db-cli
+Architecture: any
+Depends: ${shlibs:Depends}, ${misc:Depends}
+Description: <insert up to 60 chars description>
+ <insert long description, indented with spaces>

src/sonic-db-cli/debian/copyright

@@ -0,0 +1 @@
+Copyright (C) 2022  Microsoft, Inc

src/sonic-db-cli/debian/rules

@@ -0,0 +1,25 @@
+#!/usr/bin/make -f
+# See debhelper(7) (uncomment to enable)
+# output every command that modifies files on the build system.
+#export DH_VERBOSE = 1
+
+
+# see FEATURE AREAS in dpkg-buildflags(1)
+#export DEB_BUILD_MAINT_OPTIONS = hardening=+all
+
+# see ENVIRONMENT in dpkg-buildflags(1)
+# package maintainers to append CFLAGS
+#export DEB_CFLAGS_MAINT_APPEND  = -Wall -pedantic
+# package maintainers to append LDFLAGS
+#export DEB_LDFLAGS_MAINT_APPEND = -Wl,--as-needed
+
+
+%:
+	dh $@
+
+
+# dh_make generated override targets
+# This is example for Cmake (See https://bugs.debian.org/641051 )
+#override_dh_auto_configure:
+#	dh_auto_configure -- \
+#	-DCMAKE_LIBRARY_PATH=$(DEB_HOST_MULTIARCH)