Commando - run commands against networking devices in batch mode

@glspi is maybe testing this a bit more, but we realized we were uh... not very concurrent 🤣

tldr; the resp := <- rCh was blocking on each device waiting for response. so just moved things around a bit and created a dummy object to send into channel so we can always have the device name bound to response even if things fail early (as in no scrapligo response object gets created because we send nil to the rCh).

When running commands and storing the output in the files, there are characters in the file names that are safe for Linux systems but they cannot be transferred to some other OS hosts without renaming all the files with output from that particular command with the offending characters. Perhaps an additional switch could be added to make the output file names safe (since you do lose some information this way.)

The approach I was taking was convert anything in the character class [^\w-_] and change it to an _ character. Then do a second pass to remove any contiguous [-_] characters and replace them with a single hyphen or underscore (which ever came first.)

I think it is convenient to run commands add hoc against the devices defined in the inventory without editing the original inventory file everytime. If this pull-req does not match your design concept, feel free to reject it.

$ cmdo -i inventory.yml -c 'show interface description'
$ cmdo -i inventory.yml -c 'show interface description | include Gi'

Sorry for PR without checking if you're even interested in this -- was just playing about with commando and had this so figured I'd raise this just in case you were interested!

TL;DR -- added defaults and "extras" to inventory yaml.

Defaults: fairly self explanatory -- figured rather than having to have username/password entered for every device having a default setting would be cool. The implementation is pretty basic -- just load a slice of options with the defaults coming first -- that way any device specific settings override the defaults.

Extras: could do without the "extras" parent, but basically its just "extra" stuff... hence the name. Things that folks probably wouldn't mess with too often -- port, auth strict key (I left false as the default, but now users can turn it on if they want), transport type (you know I love me the system transport! though this of course could break for windows users), ssh config file, and the secondary password (so we can deal with "enable" passwords).

Carl

It seems there is a regression when using commands from the inventory file.

 devices:
  sros:
    platform: nokia_sros_classic
    address:myrouter
    send-commands:
      - show version
      - show router interface
      - admin display-config

In this case cmds array has one empty entry in inventory.go. I workarround the issue for now by testing cmds[0] but there maybe a beter way.

cmds := strings.Split(app.commands, "::")

	if cmds[0] != "" {
		for _, device := range i.Devices {
			device.SendCommands = cmds
		}
	}

👋 just noticed that I think the last time I reswizzled some stuff with creds I broke credentials getting set for "single device" mode. this fixes that!

Hi, I am friends with carlm fyi if you have questions, he told me to just submit a PR on this..

The install script was no longer installing correctly on multiple pc's and os types. I'm not sure what changed, but it could no longer pull the latest release and set the version properly, causing the download url for the .tgz to be incorrect. Switching the url to api.github.com/repos and tweaking the sed command allows it to work again. I created a new variable since the url was used in a few spots, hope that's ok.

I tested installing old versions and updating to the latest version.

Also, the example for transports had 'credentials:' instead of 'transports:' so I updated that as well.

Sorry for giant pr...

Took the send-file branch you had and added cfg support as well. Also broke stuff out into a few different files just for sanity sake, but we can easily squash that back into cmdo.go if ya prefer!

0.1.1 makes secondary auth handling much better -- w/ 0.1.0 if a device does not have a secondary (enable) password, we just sit there and hang waiting for a timeout then continue on like nothing happened. w/ 0.1.1 we "bail out" of the interactive prompt handling if we see a prompt come back from the device -- much smarter/faster!

• bumps pin for scrapli -> current dev branch that we've been discussing for the kne bits
• updates the Failed bits to the new setup where failed is an error instead of a bool
• actually write out cfg results (tested it and its pretty slick!)

draft since will probably just update pin to master (and maybe even make a real scrapligo release?!?!?) after things are dialed in on the kne side of things!

this PR adds support for

• send-commands-from-file
• send-configs
• send-configs-from-file device-level options

The idea is to allow pushing some config to the devices before scrpaligo has cfg support.

/cc @carlmontanari