Envelope::MessageValidator

This gem allows for a validation of YAML messages based on kwalify

Installation

Add this line to your application's Gemfile:

gem 'message-validator'

And then execute:

$ bundle exec bin/message-validator

Or install it yourself as:

$ gem install message-validator

Usage

Commands:
  message-validator agent           # run as agent to provide validations via MQTT
  message-validator help [COMMAND]  # Describe available commands or one specific command
  message-validator list            # list available schemata
  message-validator validate YAML   # validates if YAML is valid

Options:
  -p, [--schemata-path=SCHEMATA-PATH]  # path to schemata files
                                       # Default: /Users/Simon/work/envelope-validator/schemata

Agent mode

Requests

Validation requests have to be posted to the topic:

    envelope/validator/validate/<schema>/<id>

whereas <schema> is a schema in accordance to the list obtained via message-validator list. Passing .*, anyschema, or leaving the field empty requests a validation against all available schemata. <id> is an arbitrary string that can be used for an identification of the result message. The payload of the message should contain a string in YAML format.

Results

The agent publishes results on the topics:

    envelope/validator/result/<id>

<id> corresponds to the ID defined within the request topic. If the <id> field is empty, it is omitted in the result topic as well. Result messages contain the following information:

result: <success/failure>
validations:
- schema: <schema name>
  result: <true/false>
- schema: <schema name>
  result: <true/false>
  errors:
  - <error string>
  - <error string>
  - ...
- ...

Development

After checking out the repo, run bin/setup to install dependencies. You can also run bin/console for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and tags, and push the .gem file to rubygems.org.

Contributing

Bug reports and pull requests are welcome on GitHub at https://github.com/envelope-project/message-validator.

License

The gem is available as open source under the terms of the MIT License.