Sorting all json config-elements residing in config_db.json

[rodnymolina]

A simple change to make sonic's user life a little bit easier. Displaying the multiple elements of config_db.json in an orderly fashion allows a more intuitive user-experience.

For this change i'm simply intercepting the config-state that is about to be dumped to config_db.json, and i'm placing it in an ordered-dictionary, so that information is pushed to file in natural/alphanumerical ordering.

Example:

admin@lnos-x1-a-csw01:~$ sudo sonic-cfggen -m /etc/sonic/minigraph.xml --print-data
{
...
"PORT": {
"Ethernet0": {
"alias": "Eth1/1",
"lanes": "65"
},
"Ethernet1": {
"alias": "Eth1/2",
"lanes": "66"
},
"Ethernet2": {
"alias": "Eth1/3",
"lanes": "67"
},
"Ethernet3": {
"alias": "Eth1/4",
"lanes": "68"
},
"Ethernet4": {
"alias": "Eth2/1",
"lanes": "69"
},
...
...
"INTERFACE": {
"Ethernet0|10.0.0.0/31": {},
"Ethernet1|10.0.0.2/31": {},
"Ethernet2|10.0.0.4/31": {},
"Ethernet3|10.0.0.6/31": {},
"Ethernet4|10.0.0.8/31": {},

[lguohan]

what about Ethernet1, Ethernet2 and Ethernet10, will Ethernet10 be after Ethernet2 after natsort?

[rodnymolina]

Right, natsort does a proper alphanumerical sorting. See example below...

$ cat /etc/sonic/config_db.json
...
"Ethernet0": {
"alias": "Eth1/1",
"lanes": "65"
},
"Ethernet1": {
"alias": "Eth1/2",
"lanes": "66"
},
"Ethernet2": {
"alias": "Eth1/3",
"lanes": "67"
},
"Ethernet3": {
"alias": "Eth1/4",
"lanes": "68"
},
"Ethernet4": {
"alias": "Eth2/1",
"lanes": "69"
},
"Ethernet5": {
"alias": "Eth2/2",
"lanes": "70"
},
"Ethernet6": {
"alias": "Eth2/3",
"lanes": "71"
},
"Ethernet7": {
"alias": "Eth2/4",
"lanes": "72"
},
"Ethernet8": {
"alias": "Eth3/1",
"lanes": "73"
},
"Ethernet9": {
"alias": "Eth3/2",
"lanes": "74"
},
"Ethernet10": {
"alias": "Eth3/3",
"lanes": "75"
},
"Ethernet11": {
"alias": "Eth3/4",
"lanes": "76"
},
"Ethernet12": {
"alias": "Eth4/1",
"lanes": "77"
},
"Ethernet13": {
"alias": "Eth4/2",
"lanes": "78"
},
"Ethernet14": {
"alias": "Eth4/3",
"lanes": "79"
...
"INTERFACE": {
"Ethernet0|10.0.0.0/31": {},
"Ethernet1|10.0.0.2/31": {},
"Ethernet2|10.0.0.4/31": {},
"Ethernet3|10.0.0.6/31": {},
"Ethernet4|10.0.0.8/31": {},
"Ethernet5|10.0.0.10/31": {},
"Ethernet6|10.0.0.12/31": {},
"Ethernet7|10.0.0.14/31": {},
"Ethernet8|10.0.0.16/31": {},
"Ethernet9|10.0.0.18/31": {},
"Ethernet10|10.0.0.20/31": {},
"Ethernet11|10.0.0.22/31": {},
"Ethernet12|10.0.0.24/31": {},
"Ethernet13|10.0.0.26/31": {},