Move warm_restart enable/disable config to stateDB WARM_RESTART_ENABL… (sonic-net#458)

* Move warm_restart enable/disable config to stateDB WARM_RESTART_ENABLE_TABLE

Signed-off-by: Jipan Yang <jipan.yang@alibaba-inc.com>

* Fix NoneType not iterable error when no warm_restart enable/disable configured yet

Signed-off-by: Jipan Yang <jipan.yang@alibaba-inc.com>

Author: jipanyang

config/main.py

@@ -11,6 +11,7 @@
 
 import sonic_platform
 from swsssdk import ConfigDBConnector
+from swsssdk import SonicV2Connector
 from minigraph import parse_device_desc_xml
 
 import aaa
@@ -591,22 +592,34 @@ def warm_restart(ctx, redis_unix_socket_path):
         kwargs['unix_socket_path'] = redis_unix_socket_path
     config_db = ConfigDBConnector(**kwargs)
     config_db.connect(wait_for_init=False)
-    ctx.obj = {'db': config_db}
+
+    # warm restart enable/disable config is put in stateDB, not persistent across cold reboot, not saved to config_DB.json file
+    state_db = SonicV2Connector(host='127.0.0.1')
+    state_db.connect(state_db.STATE_DB, False)
+    TABLE_NAME_SEPARATOR = '|'
+    prefix = 'WARM_RESTART_ENABLE_TABLE' + TABLE_NAME_SEPARATOR
+    ctx.obj = {'db': config_db, 'state_db': state_db, 'prefix': prefix}
     pass
 
 @warm_restart.command('enable')
 @click.argument('module', metavar='<module>', default='system', required=False, type=click.Choice(["system", "swss", "bgp", "teamd"]))
 @click.pass_context
 def warm_restart_enable(ctx, module):
-    db = ctx.obj['db']
-    db.mod_entry('WARM_RESTART', module, {'enable': 'true'})
+    state_db = ctx.obj['state_db']
+    prefix = ctx.obj['prefix']
+    _hash = '{}{}'.format(prefix, module)
+    state_db.set(state_db.STATE_DB, _hash, 'enable', 'true')
+    state_db.close(state_db.STATE_DB)
 
 @warm_restart.command('disable')
 @click.argument('module', metavar='<module>', default='system', required=False, type=click.Choice(["system", "swss", "bgp", "teamd"]))
 @click.pass_context
 def warm_restart_enable(ctx, module):
-    db = ctx.obj['db']
-    db.mod_entry('WARM_RESTART', module, {'enable': 'false'})
+    state_db = ctx.obj['state_db']
+    prefix = ctx.obj['prefix']
+    _hash = '{}{}'.format(prefix, module)
+    state_db.set(state_db.STATE_DB, _hash, 'enable', 'false')
+    state_db.close(state_db.STATE_DB)
 
 @warm_restart.command('neighsyncd_timer')
 @click.argument('seconds', metavar='<seconds>', required=True, type=int)
@@ -1053,7 +1066,7 @@ def interval(interval):
     """Configure watermark telemetry interval"""
     command = 'watermarkcfg --config-interval ' + interval
     run_command(command)
-   
+
 
 #
 # 'interface_naming_mode' subgroup ('config interface_naming_mode ...')

scripts/fast-reboot

@@ -159,7 +159,8 @@ function backup_database()
     # Delete keys in stateDB except FDB_TABLE|* and WARM_RESTA*
     redis-cli -n 6 eval "
         for _, k in ipairs(redis.call('keys', '*')) do
-            if not string.match(k, 'FDB_TABLE|') and not string.match(k, 'WARM_RESTART_TABLE|') then
+            if not string.match(k, 'FDB_TABLE|') and not string.match(k, 'WARM_RESTART_TABLE|') \
+                                          and not string.match(k, 'WARM_RESTART_ENABLE_TABLE|') then
                 redis.call('del', k)
             end
         end

show/main.py

@@ -782,7 +782,7 @@ def route_map(route_map_name, verbose):
         cmd += ' {}'.format(route_map_name)
     cmd += '"'
     run_command(cmd, display_cmd=verbose)
-	
+
 #
 # 'ip' group ("show ip ...")
 #
@@ -1717,21 +1717,40 @@ def config(redis_unix_socket_path):
     config_db = ConfigDBConnector(**kwargs)
     config_db.connect(wait_for_init=False)
     data = config_db.get_table('WARM_RESTART')
+    # Python dictionary keys() Method
     keys = data.keys()
 
-    def tablelize(keys, data):
+    state_db = SonicV2Connector(host='127.0.0.1')
+    state_db.connect(state_db.STATE_DB, False)   # Make one attempt only
+    TABLE_NAME_SEPARATOR = '|'
+    prefix = 'WARM_RESTART_ENABLE_TABLE' + TABLE_NAME_SEPARATOR
+    _hash = '{}{}'.format(prefix, '*')
+    # DBInterface keys() method
+    enable_table_keys = state_db.keys(state_db.STATE_DB, _hash)
+
+    def tablelize(keys, data, enable_table_keys, prefix):
         table = []
 
+        if enable_table_keys is not None:
+            for k in enable_table_keys:
+                k = k.replace(prefix, "")
+                if k not in keys:
+                    keys.append(k)
+
         for k in keys:
             r = []
             r.append(k)
 
-            if 'enable' not in  data[k]:
+            enable_k = prefix + k
+            if enable_table_keys is None or enable_k not in enable_table_keys:
                 r.append("false")
             else:
-                r.append(data[k]['enable'])
+                r.append(state_db.get(state_db.STATE_DB, enable_k, "enable"))
 
-            if 'neighsyncd_timer' in  data[k]:
+            if k not in data:
+                r.append("NULL")
+                r.append("NULL")
+            elif 'neighsyncd_timer' in  data[k]:
                 r.append("neighsyncd_timer")
                 r.append(data[k]['neighsyncd_timer'])
             elif 'bgp_timer' in data[k]:
@@ -1749,8 +1768,8 @@ def tablelize(keys, data):
         return table
 
     header = ['name', 'enable', 'timer_name', 'timer_duration']
-    click.echo(tabulate(tablelize(keys, data), header))
-
+    click.echo(tabulate(tablelize(keys, data, enable_table_keys, prefix), header))
+    state_db.close(state_db.STATE_DB)
 
 if __name__ == '__main__':
     cli()

sonic_installer/main.py

@@ -10,6 +10,7 @@
 import urllib
 import subprocess
 from swsssdk import ConfigDBConnector
+from swsssdk import SonicV2Connector
 import collections
 
 HOST_PATH = '/host'
@@ -400,11 +401,15 @@ def upgrade_docker(container_name, url, cleanup_image, enforce_check, tag):
     # TODO: Validate the new docker image before disrupting existsing images.
 
     warm = False
-    config_db = ConfigDBConnector()
-    config_db.connect()
-    entry = config_db.get_entry('WARM_RESTART', container_name)
-    if entry and entry['enable'].lower() == 'true':
+    # warm restart enable/disable config is put in stateDB, not persistent across cold reboot, not saved to config_DB.json file
+    state_db = SonicV2Connector(host='127.0.0.1')
+    state_db.connect(state_db.STATE_DB, False)
+    TABLE_NAME_SEPARATOR = '|'
+    prefix = 'WARM_RESTART_ENABLE_TABLE' + TABLE_NAME_SEPARATOR
+    _hash = '{}{}'.format(prefix, container_name)
+    if state_db.get(state_db.STATE_DB, _hash, "enable") == "true":
         warm = True
+    state_db.close(state_db.STATE_DB)
 
     # warm restart specific procssing for swss, bgp and teamd dockers.
     if warm == True: