validation of parameters

[haydonryan]

It'd be really nice if the CLI performed validation on two use cases (fast feedback to user):

1. if you specify a flag, but don't specify a parameter.
2. if you repeat parameters (especially likely in creating a complex cloud config)

[haydonryan]

for example due to stupidity I tried:

omg deploy-cloudconfig \

--bosh-url https://10.0.16.6 --bosh-port 25555
--bosh-user admin --bosh-pass cat director.pwd --ssl-ignore
aws-cloudconfigplugin-linux
--aws-region us-west-1
--aws-security-group
--bosh-az-name-1 public
--cidr-1 10.0.0.0/24
--gateway-1 10.0.0.1
--dns-1 10.0.0.2
--aws-az-name-1 us-west-1b
--aws-subnet-name-1 subnet-X
--bosh-reserve-range-1 "10.0.0.1-10.0.0.10"
--bosh-az-name-1 private
--cidr-1 10.0.16.0/20
--gateway-1 10.0.16.1
--dns-1 10.0.16.2
--aws-az-name-1 us-west-1b
--aws-subnet-name-1 subnet-X
--bosh-reserve-range-1 "10.0.16.1-10.0.16.10"
400 Bad Request error pushing cloud config to BOSH: {"code":40001,"description":"Required property 'networks' was not specified in object ({})"}

[zmb3]

These are limitations of the CLI library we use, which make it tricky for us to fix downstream. For example, in case 2 above, by the time the flags get to us the library has already picked the last use of a flag (we don't even see that it was supplied more than once). We should file issues upstream: https://github.com/urfave/cli

[haydonryan]

Ok want me to do that?