Add spec validators for the WRP messages (BAD BRANCH)

[denopink]

Overview

related to #25, #78, xmidt-org/scytale#88, xmidt-org/talaria#153 and builds on top of #80.

Note The diff looks big because we're waiting for #80 , we'll rebase when it's merged.

tl;dr

This pr introduces our wrp spec validators built with our validation framework introduced in #80 which only validates the opinionated portions of the spec. Clients can leverage these prebuilt validators to validate their messages.

Explanation

* Validates requirements described at https://xmidt.io/docs/wrp/basics/#overarching-guidelines * Validates requirements described at https://xmidt.io/docs/wrp/basics/#locators * Validates message type values * Does not cover validators for a specific message type (future prs) Clients can leverage our prebuilt validators to validate their messages. One set of these validators are our `spec validators`: ```go msgv, err := NewTypeValidator( // Validates found msg types map[MessageType]Validator{ // Validates opinionated portions of the spec SimpleEventMessageType: SpecValidators, // Only validates Source and nothing else SimpleRequestResponseMessageType: SourceValidator, }, // Validates unfound msg types AlwaysInvalid) if err != nil { return } foundErrSuccess1 := msgv.Validate(Message{ Type: SimpleEventMessageType, Source: "MAC:11:22:33:44:55:66", Destination: "MAC:11:22:33:44:55:61", }) // Found success foundErrSuccess2 := msgv.Validate(Message{ Type: SimpleRequestResponseMessageType, Source: "MAC:11:22:33:44:55:66", Destination: "invalid:a-BB-44-55", }) // Found success foundErrFailure := msgv.Validate(Message{ Type: Invalid0MessageType, Source: "invalid:a-BB-44-55", Destination: "invalid:a-BB-44-55", }) // Found error unfoundErrFailure := msgv.Validate(Message{Type: CreateMessageType}) // Unfound error fmt.Println(foundErrSuccess1 == nil, foundErrSuccess2 == nil, foundErrFailure == nil, unfoundErrFailure == nil) // Output: true true false false ```

Type of Change(s)

- Non-breaking Enhancement - All new and existing tests passed.

[codecov[bot]]

Codecov Report

Merging #82 (e34c963) into main (840a19e) will increase coverage by 1.13%. The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main      #82      +/-   ##
==========================================
+ Coverage   49.30%   50.43%   +1.13%     
==========================================
  Files          19       21       +2     
  Lines        3235     3309      +74     
==========================================
+ Hits         1595     1669      +74     
  Misses       1469     1469              
  Partials      171      171              

Impacted Files	Coverage Δ
utf8.go	88.23% <ø> (-0.66%)	:arrow_down:
spec_validator.go	100.00% <100.00%> (ø)
validator.go	100.00% <100.00%> (ø)

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[denopink]

I did something silly and this branch is kinda messed up. Easier to create new branch and pr and cherry-pick the desired commits.