[DPB] show interface breakout throws error when BREAKOUT_CFG table not present #7957
Description
When the user upgrades from a previous version of SONiC such as 202012 the table BREAKOUT_CFG is not automatically imported which is required for certain dynamic port breakout commands to function such as show interface breakout and config interface breakout
While the absence of BREAKOUT_CFG is an intentional design decision (see this comment on #7402) these commands are present and should elegantly handle error and inform the end user they should run config reload -l in order to enable this feature on an upgraded switch.
Experienced Result
admin@r-bulldog-03:~$ show int break
Traceback (most recent call last):
File "/usr/local/bin/show", line 8, in
sys.exit(cli())
File "/usr/local/lib/python3.7/dist-packages/click/core.py", line 764, in __call__
return self.main(*args, **kwargs)
File "/usr/local/lib/python3.7/dist-packages/click/core.py", line 717, in main
rv = self.invoke(ctx)
File "/usr/local/lib/python3.7/dist-packages/click/core.py", line 1137, in invoke
return _process_result(sub_ctx.command.invoke(sub_ctx))
File "/usr/local/lib/python3.7/dist-packages/click/core.py", line 1137, in invoke
return _process_result(sub_ctx.command.invoke(sub_ctx))
File "/usr/local/lib/python3.7/dist-packages/click/core.py", line 1114, in invoke
return Command.invoke(self, ctx)
File "/usr/local/lib/python3.7/dist-packages/click/core.py", line 956, in invoke
return ctx.invoke(self.callback, **ctx.params)
File "/usr/local/lib/python3.7/dist-packages/click/core.py", line 555, in invoke
return callback(*args, **kwargs)
File "/usr/local/lib/python3.7/dist-packages/click/decorators.py", line 17, in new_func
return f(get_current_context(), *args, **kwargs)
File "/usr/local/lib/python3.7/dist-packages/show/interfaces/__init__.py", line 204, in breakout
cur_brkout_mode = cur_brkout_tbl[port_name]["brkout_mode"]
KeyError: 'Ethernet0'
Desired Result
Some type of human readable error message.
e.g. CONFIG_DB does not contain the required information to complete this action please run config reload -l to import this from the platform files to enable dynamic breakout features
Version
SONiC Software Version: SONiC.master.140-a4b31fcb7_Internal
Distribution: Debian 10.9
Kernel: 4.19.0-12-2-amd64
Build commit: a4b31fcb7
Build date: Mon Jun 14 15:31:01 UTC 2021
Built by: sw-r2d2-bot@r-build-sonic-ci02
Platform: x86_64-mlnx_msn4700-r0
HwSKU: ACS-MSN4700
ASIC: mellanox
ASIC Count: 1
Serial Number: MT2022X08597
Uptime: 21:11:29 up 16:58, 3 users, load average: 0.32, 0.25, 0.26
Docker images:
REPOSITORY TAG IMAGE ID SIZE
harbor.mellanox.com/sonic-lc-manager/lc-manager 0.0.6 07dab0396238 554MB
docker-syncd-mlnx latest 41d9f031f17d 670MB
docker-syncd-mlnx master.140-a4b31fcb7_Internal 41d9f031f17d 670MB
docker-snmp latest 93bd11cff0c5 454MB
docker-snmp master.140-a4b31fcb7_Internal 93bd11cff0c5 454MB
docker-teamd latest 39519881ce7e 423MB
docker-teamd master.140-a4b31fcb7_Internal 39519881ce7e 423MB
docker-nat latest 094f94d8687c 426MB
docker-nat master.140-a4b31fcb7_Internal 094f94d8687c 426MB
docker-router-advertiser latest d31730f2d8a1 412MB
docker-router-advertiser master.140-a4b31fcb7_Internal d31730f2d8a1 412MB
docker-platform-monitor latest 6708eb3468f2 701MB
docker-platform-monitor master.140-a4b31fcb7_Internal 6708eb3468f2 701MB
docker-lldp latest e699b0e15f80 452MB
docker-lldp master.140-a4b31fcb7_Internal e699b0e15f80 452MB
docker-dhcp-relay latest 9139ad1c1bfc 419MB
docker-dhcp-relay master.140-a4b31fcb7_Internal 9139ad1c1bfc 419MB
docker-database latest 7dcb114a2d7a 412MB
docker-database master.140-a4b31fcb7_Internal 7dcb114a2d7a 412MB
docker-orchagent latest 9f289a7b96c3 442MB
docker-orchagent master.140-a4b31fcb7_Internal 9f289a7b96c3 442MB
docker-macsec latest 0ddeec697dbc 426MB
docker-macsec master.140-a4b31fcb7_Internal 0ddeec697dbc 426MB
docker-sonic-telemetry latest 4e07a8ec7a64 501MB
docker-sonic-telemetry master.140-a4b31fcb7_Internal 4e07a8ec7a64 501MB
docker-sonic-mgmt-framework latest 52b04ff3a071 570MB
docker-sonic-mgmt-framework master.140-a4b31fcb7_Internal 52b04ff3a071 570MB
docker-fpm-frr latest 1aa221bda051 441MB
docker-fpm-frr master.140-a4b31fcb7_Internal 1aa221bda051 441MB
docker-sflow latest 1540482a009e 424MB
docker-sflow master.140-a4b31fcb7_Internal 1540482a009e 424MB
docker-sonic-restapi latest 6f4fdb26f843 355MB
docker-sonic-restapi master.140-a4b31fcb7_Internal 6f4fdb26f843 355MB