Class: Philiprehberger::EnvValidator::Validator

Inherits:

Object

• Object
• Philiprehberger::EnvValidator::Validator

Defined in:

lib/philiprehberger/env_validator/validator.rb

Overview

Validates environment variables against a schema.

Constant Summary

BOOLEAN_TRUE =

%w[true 1 yes on].freeze

BOOLEAN_FALSE =

%w[false 0 no off].freeze

Instance Method Summary

• #initialize(schema, env: ENV, prefix: nil) ⇒ Validator constructor

  A new instance of Validator.

• #validate! ⇒ Result

  Validate and return a Result.

Constructor Details

#initialize(schema, env: ENV, prefix: nil) ⇒ Validator

Returns a new instance of Validator.

Parameters:

• schema (Schema) —

  the schema to validate against

• env (Hash) (defaults to: ENV) —

  the environment hash (default: ENV)

• prefix (String, nil) (defaults to: nil) —

  optional prefix prepended to variable names during lookup

# File 'lib/philiprehberger/env_validator/validator.rb', line 13

def initialize(schema, env: ENV, prefix: nil)
  @schema = schema
  @env = env
  @prefix = prefix
end

Instance Method Details

#validate! ⇒ Result

Validate and return a Result.

Returns:

• (Result) —

  validated values

Raises:

• (ValidationError) —

  if required variables are missing or casting fails

# File 'lib/philiprehberger/env_validator/validator.rb', line 23

def validate!
  errors = []
  values = {}

  @schema.definitions.each do |name, definition|
    value, error = resolve(name, definition)
    errors << error if error
    values[name] = value unless error
  end

  raise ValidationError, errors.join('; ') unless errors.empty?

  Result.new(values)
end