Added code to start a new service to configure TSA as soon as Linecard comes up, start a timer to configure TSB and configure TSB when the timer expires

device/nokia/x86_64-nokia_ixr7250e_36x400g-r0/startup-tsa-tsb.conf

@@ -0,0 +1 @@
+STARTUP_TSB_TIMER=900

dockers/docker-fpm-frr/base_image_files/TS

@@ -65,3 +65,17 @@ else
             docker exec -i bgp /usr/bin/$1
         fi
 fi
+
+# If TSA was issued by startup_tsa_tsb.service, show it
+if [[ $1 == "TSC" ]]; then
+   service='startup_tsa_tsb.service'
+   if [[ $(/bin/systemctl show $service --property ActiveState  --value) == "active" ]] && \
+      [[ $(/bin/systemctl show $service --property SubState  --value) == "running" ]]; then
+       TSA_TSB_CONF=/usr/share/sonic/device/$PLATFORM/startup-tsa-tsb.conf
+       [ -f $TSA_TSB_CONF ] && . $TSA_TSB_CONF
+       service_start_sec=$(date -d "$(systemctl show --property=ActiveEnterTimestamp $service --value)" +%s)
+       service_elapsed_sec=$(( $(date +%s) - service_start_sec))
+       tsb_time_remaining=$((STARTUP_TSB_TIMER - service_elapsed_sec))
+       echo "TSB  : Pending (Time Remaining:$tsb_time_remaining seconds,  service:$service)"
+   fi
+fi

dockers/docker-fpm-frr/base_image_files/TSA

@@ -21,6 +21,15 @@ then
   sudo config mux mode standby all
 fi
 
+if [ -z "$STARTED_BY_TSA_TSB_SERVICE" ]; then
+  service='startup_tsa_tsb.service'
+  if [[ $(/bin/systemctl show $service --property ActiveState  --value) == "active" ]] && \
+     [[ $(/bin/systemctl show $service --property SubState  --value) == "running" ]]; then
+      echo "Stopping $service before configuring TSA"
+      systemctl stop $service
+  fi
+fi
+
 /usr/bin/TS TSA
 if [[ "$(sonic-cfggen -d -v DEVICE_METADATA.localhost.type)" == *"SpineRouter"* ]] ; then
   if [[ "$1" != "chassis" ]] ; then
@@ -29,4 +38,4 @@ if [[ "$(sonic-cfggen -d -v DEVICE_METADATA.localhost.type)" == *"SpineRouter"*
   fi
 else
   echo "Please execute 'sudo config save' to preserve System mode in Maintenance after reboot or config reload"
-fi
+fi

dockers/docker-fpm-frr/base_image_files/TSB

@@ -21,6 +21,15 @@ then
   sudo config mux mode auto all
 fi
 
+if [ -z "$STARTED_BY_TSA_TSB_SERVICE" ]; then
+  service='startup_tsa_tsb.service'
+  if [[ $(/bin/systemctl show $service --property ActiveState  --value) == "active" ]] && \
+     [[ $(/bin/systemctl show $service --property SubState  --value) == "running" ]]; then
+      echo "Stopping $service before configuring TSB"
+      systemctl stop $service
+  fi
+fi
+
 /usr/bin/TS TSB
 if [[ "$(sonic-cfggen -d -v DEVICE_METADATA.localhost.type)" == *"SpineRouter"* ]] ; then
   if [[ "$1" != "chassis" ]] ; then

files/build_templates/sonic_debian_extension.j2

@@ -871,6 +871,7 @@ sudo LANG=C cp $SCRIPTS_DIR/telemetry.sh $FILESYSTEM_ROOT/usr/local/bin/telemetr
 sudo LANG=C cp $SCRIPTS_DIR/mgmt-framework.sh $FILESYSTEM_ROOT/usr/local/bin/mgmt-framework.sh
 sudo LANG=C cp $SCRIPTS_DIR/asic_status.sh $FILESYSTEM_ROOT/usr/local/bin/asic_status.sh
 sudo LANG=C cp $SCRIPTS_DIR/asic_status.py $FILESYSTEM_ROOT/usr/local/bin/asic_status.py
+sudo LANG=C cp $SCRIPTS_DIR/startup_tsa_tsb.py $FILESYSTEM_ROOT/usr/local/bin/startup_tsa_tsb.py
 
 # Copy sonic-netns-exec script
 sudo LANG=C cp $SCRIPTS_DIR/sonic-netns-exec $FILESYSTEM_ROOT/usr/bin/sonic-netns-exec
@@ -899,6 +900,9 @@ echo "mgmt-framework.timer" | sudo tee -a $GENERATED_SERVICE_FILE
 sudo cp $BUILD_TEMPLATES/pmon.timer $FILESYSTEM_ROOT_USR_LIB_SYSTEMD_SYSTEM
 echo "pmon.timer" | sudo tee -a $GENERATED_SERVICE_FILE
 
+sudo cp files/build_templates/startup_tsa_tsb.service $FILESYSTEM_ROOT_USR_LIB_SYSTEMD_SYSTEM/
+echo "startup_tsa_tsb.service" | sudo tee -a $GENERATED_SERVICE_FILE
+
 sudo cp $BUILD_TEMPLATES/sonic.target $FILESYSTEM_ROOT_USR_LIB_SYSTEMD_SYSTEM
 sudo LANG=C chroot $FILESYSTEM_ROOT systemctl enable sonic.target
 

files/build_templates/startup_tsa_tsb.service

@@ -0,0 +1,15 @@
+[Unit]
+Description= STARTUP TSA-TSB SERVICE
+Requires=updategraph.service database.service
+After=updategraph.service database.service
+Before=bgp.service
+ConditionPathExists=!/etc/sonic/chassisdb.conf
+
+[Service]
+Environment="STARTED_BY_TSA_TSB_SERVICE=1"
+ExecStart=/usr/bin/python3 -u /usr/local/bin/startup_tsa_tsb.py  start
+ExecStop=/usr/bin/python3 -u /usr/local/bin/startup_tsa_tsb.py stop
+RemainAfterExit=yes
+
+[Install]
+WantedBy=multi-user.target

files/scripts/startup_tsa_tsb.py

@@ -0,0 +1,156 @@
+#!/usr/bin/env python3
+
+# Name: startup_tsa_tsb.py, version: 1.0
+#
+# Description: Module contains the definitions to the VOQ Startup TSA-TSB service
+from sonic_py_common import multi_asic, device_info
+from sonic_py_common.logger import Logger
+import subprocess
+import sys, getopt
+from threading import Timer
+import os
+
+# Global Logger class instance
+logger = Logger("startup_tsa_tsb")
+logger.set_min_log_priority_info()
+
+def get_tsb_timer_interval():
+    platform = device_info.get_platform()
+    conf_file = '/usr/share/sonic/device/{}/startup-tsa-tsb.conf'.format(platform)
+    file = open(conf_file, 'r')
+    Lines = file.readlines()
+    for line in Lines:
+        field = line.split('=')[0].strip()
+        if field == "STARTUP_TSB_TIMER":
+            return line.split('=')[1].strip()
+    return 0
+
+def get_sonic_config(ns, config_name):
+    if ns == "":
+        return subprocess.check_output(['sonic-cfggen', '-d', '-v', config_name.replace('"', "'"), ]).strip()
+    else:
+        return subprocess.check_output(['sonic-cfggen', '-d', '-v', config_name.replace('"', "'"), '-n', ns.replace('"', "'")]).strip()
+
+def get_sub_role(asic_ns):
+    sub_role_config = "DEVICE_METADATA['localhost']['sub_role']"
+    sub_role = (get_sonic_config(asic_ns, sub_role_config)).decode()
+    return sub_role
+
+def get_tsa_config(asic_ns):
+    tsa_config = 'BGP_DEVICE_GLOBAL.STATE.tsa_enabled'
+    tsa_ena = (get_sonic_config(asic_ns, tsa_config)).decode()
+    if asic_ns == "":
+        logger.log_info('CONFIG_DB.{} : {}'.format(tsa_config, tsa_ena))
+    else:
+        logger.log_info('{} - CONFIG_DB.{} : {}'.format(asic_ns, tsa_config, tsa_ena))
+    return tsa_ena
+
+def get_tsa_status(num_asics):
+    if num_asics > 1:
+        counter = 0
+        for asic_id in range(int(asic_num)):
+            asic_ns = 'asic{}'.format(asic_id)
+            sub_role = get_sub_role(asic_ns)
+            if sub_role == 'FrontEnd':
+                tsa_enabled = get_tsa_config(asic_ns)
+                if tsa_enabled == 'false':
+                    counter += 1
+        if counter == int(asic_num):
+            return True;
+    else:
+        tsa_enabled = get_tsa_config("")
+        if tsa_enabled == 'false':
+            return True;
+    return False;
+
+def config_tsa():
+    num_asics = multi_asic.get_num_asics()
+    tsa_ena = get_tsa_status(num_asics)
+    if tsa_ena == True:
+        logger.log_info("Configuring TSA")
+        subprocess.check_output(['TSA']).strip()
+    else:
+        if num_asics > 1:
+            logger.log_info("Either TSA is already configured or switch sub_role is not Frontend - not configuring TSA")
+        else:
+            logger.log_info("Either TSA is already configured - not configuring TSA")
+    return tsa_ena
+
+def config_tsb():
+    logger.log_info("Configuring TSB")
+    subprocess.check_output(['TSB']).strip()
+    tsb_issued = True
+    return
+
+def start_tsb_timer(interval):
+    global timer
+    logger.log_info("Starting timer with interval {} seconds to configure TSB".format(interval))
+    timer = Timer(int(interval), config_tsb)
+    timer.start()
+    timer.join()
+    return
+
+def print_usage():
+    logger.log_info("Usage: startup_tsa_tsb.py [options] command")
+    logger.log_info("options:")
+    logger.log_info("  -h | --help       : this help message")
+    logger.log_info("command:")
+    logger.log_info("start     : start the TSA/TSB")
+    logger.log_info("stop      : stop the TSA/TSB")
+    return
+
+def reset_env_variables():
+    logger.log_info("Resetting environment variable")
+    os.environ.pop('STARTED_BY_TSA_TSB_SERVICE')
+    return
+
+def start_tsa_tsb(timer):
+    #Configure TSA if it was not configured already in CONFIG_DB
+    tsa_enabled = config_tsa()
+    if tsa_enabled == True:
+        #Start the timer to configure TSB
+        start_tsb_timer(timer)
+    return
+
+def stop_tsa_tsb():
+    reset_env_variables()
+    return
+
+def main():
+    platform = device_info.get_platform()
+    conf_file = '/usr/share/sonic/device/{}/startup-tsa-tsb.conf'.format(platform)
+    #This check should be moved to service file or make this feature as configurable.
+    #Adding it here for now.
+    if not os.path.exists(conf_file):
+        logger.log_info("{} does not exist, exiting the service".format(conf_file))
+        return
+    if len(sys.argv) <= 1:
+        print_usage()
+        return
+
+    # parse command line options:
+    try:
+        opts, args = getopt.getopt(sys.argv[1:], 'h:', ['help' ])
+    except getopt.GetoptError:
+        print_usage()
+        return
+
+    for opt, arg in opts:
+        if opt in ("-h", "--help"):
+            print_usage()
+            return
+
+    for arg in args:
+        if arg == 'start':
+            tsb_timer = get_tsb_timer_interval()
+            start_tsa_tsb(tsb_timer)
+        elif arg == 'stop':
+            stop_tsa_tsb()
+        else:
+            print_usage()
+            return
+
+    return
+
+if __name__ == "__main__":
+    main()