[fast-reboot]: Save fast-reboot state into the db (#3741)

Put a flag for fast-reboot to the db using EXPIRE feature. Using this flag in other part of SONiC to start in Fast-reboot mode. If we reload a config, the state in the db will be removed.

Author: pavel-shirshov

dockers/docker-base-stretch/Dockerfile.j2

@@ -47,7 +47,13 @@ RUN apt-get update &&        \
         vim-tiny             \
 # Install dependencies of supervisor
         python-pkg-resources \
-        python-meld3
+        python-meld3         \
+# dependencies of redis-tools
+        libatomic1           \
+        libjemalloc1         \
+        liblua5.1-0          \
+        lua-bitop            \
+        lua-cjson
 
 {% if CONFIGURED_ARCH == "armhf" %}
 # ip and ifconfig utility missing in docker for armhf

dockers/docker-orchagent/Dockerfile.j2

@@ -18,13 +18,6 @@ RUN apt-get update &&       \
         iproute2            \
         ndisc6              \
         tcpdump             \
-        # Install redis-tools dependencies
-        # TODO: implicitly install dependencies
-        libatomic1          \
-        libjemalloc1        \
-        liblua5.1-0         \
-        lua-bitop           \
-        lua-cjson           \
         libelf1             \
         libmnl0             \
         bridge-utils

dockers/docker-sonic-telemetry/Dockerfile.j2

@@ -11,14 +11,7 @@ RUN apt-get update      && \
     apt-get install -f -y  \
         libdbus-1-3        \
         libdaemon0         \
-        libjansson4        \
-        # Install redis-tools dependencies
-        # TODO: implicitly install dependencies
-        libatomic1          \
-        libjemalloc1        \
-        liblua5.1-0         \
-        lua-bitop           \
-        lua-cjson
+        libjansson4
 
 {% if docker_sonic_telemetry_debs.strip() -%}
 # Copy locally-built Debian package dependencies

dockers/docker-teamd/Dockerfile.j2

@@ -12,14 +12,7 @@ RUN apt-get update      && \
         libdbus-1-3        \
         libdaemon0         \
         libjansson4        \
-        libpython2.7       \
-        # Install redis-tools dependencies
-        # TODO: implicitly install dependencies
-        libatomic1          \
-        libjemalloc1        \
-        liblua5.1-0         \
-        lua-bitop           \
-        lua-cjson
+        libpython2.7
 
 {% if docker_teamd_debs.strip() -%}
 # Copy locally-built Debian package dependencies

files/build_templates/docker_image_ctl.j2

@@ -149,6 +149,11 @@ function postStartAction()
             sonic-cfggen -j /etc/sonic/config_db.json --write-to-db
         fi
 
+        if [[ "$BOOT_TYPE" == "fast" ]]; then
+            # set the key to expire in 3 minutes
+            redis-cli -n 6 SET "FAST_REBOOT|system" "1" "EX" "180"
+        fi
+
         redis-cli -n 4 SET "CONFIG_DB_INITIALIZED" "1"
     fi
 

files/scripts/syncd.sh

@@ -64,7 +64,12 @@ function getBootType()
         TYPE='fastfast'
         ;;
     *SONIC_BOOT_TYPE=fast*|*fast-reboot*)
-        TYPE=$(awk '{ if ($1 <= 180) print "fast"; else print "cold" }' /proc/uptime)
+        # check that the key exists
+        if [[ $(redis-cli -n 6 GET "FAST_REBOOT|system") == "1" ]]; then
+            TYPE='fast'
+        else
+            TYPE='cold'
+        fi
         ;;
     *)
         TYPE='cold'

rules/docker-base-stretch.mk

@@ -2,7 +2,7 @@
 
 DOCKER_BASE_STRETCH = docker-base-stretch.gz
 $(DOCKER_BASE_STRETCH)_PATH = $(DOCKERS_PATH)/docker-base-stretch
-$(DOCKER_BASE_STRETCH)_DEPENDS += $(SUPERVISOR)
+$(DOCKER_BASE_STRETCH)_DEPENDS += $(SUPERVISOR) $(REDIS_TOOLS)
 $(DOCKER_BASE_STRETCH)_DEPENDS += $(SOCAT)
 
 GDB = gdb