I naively (!) began exploring JSON marshaling of Protobufs in rust. Other protobuf language SDKs include JSON marshaling making the process straightforward. I was to learn that, in rust, it’s not so simple. Unfortunately, for me, this continues to discourage my further use of rust (rust is just hard).

My goal was to marshal an arbitrary protocol buffer message that included a oneof feature. I was unable to JSON marshal the rust generated by tonic for such a message.

I’ve begun exploring Vultr after the company announced a managed Kubernetes offering Vultr Kubernetes Engine (VKE).

In my brief experience, it’s a decent platform and its CLI vultr-cli is mostly (!) good. The CLI has a limitation in that command output is text formatted and this makes it challenging to parse the output when scripting.

NOTE The Vultr developers have a branch rewrite that includes a solution to this problem.

Example

ID              12345678-90ab-cdef-1234-567890abcdef
LABEL           test
DATE CREATED    2022-01-01T00:00:00+00:00
CLUSTER SUBNET  255.255.255.255/16
SERVICE SUBNET  255.255.255.255/12
IP              255.255.255.255
ENDPOINT        12345678-90ab-cdef-1234-567890abcdef.vultr-k8s.com
VERSION         v1.23.5+3
REGION          mars
STATUS          pending
 
NODE POOLS
ID              12345678-90ab-cdef-1234-567890abcdef
DATE CREATED    2022-01-01T00:00:00+00:00
DATE UPDATED    2022-01-01T00:00:00+00:00
LABEL           nodepool
TAG             foo
PLAN            vc2-1c-2gb
STATUS          pending
NODE QUANTITY   1
AUTO SCALER     false
MIN NODES       1
MAX NODES       1
 
NODES
ID                                      DATE CREATED                    LABEL                   STATUS
12345678-

Until that’s available, I’m lazy writing very simple bash scripts to parse vultr-cli command output as JSON. The repo is vultr-cli-format.