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Contents
# frozen_string_literal: true
module Karafka
module Web
module Ui
module Controllers
# Namespace for request related components
module Requests
# Internal representation of params with sane sanitization
class Params
# What ranges we support for charts
# Anything else will be rejected
ALLOWED_RANGES = %w[
seconds
minutes
hours
days
].freeze
private_constant :ALLOWED_RANGES
# @param request_params [Hash] raw hash with params
def initialize(request_params)
@request_params = request_params
end
# @return [Integer] current page for paginated views
# @note It does basic sanitization
def current_page
@current_page ||= begin
page = @request_params['page'].to_i
page.positive? ? page : 1
end
end
# @return [String] Range type for charts we want to fetch
def current_range
candidate = @request_params.fetch('range', 'seconds')
candidate = ALLOWED_RANGES.first unless ALLOWED_RANGES.include?(candidate)
candidate.to_sym
end
# @return [Integer] offset from which we want to start. `-1` indicates, that we want
# to show the first page discovered based on the high watermark offset. If no offset
# is provided, we go with the high offset first page approach
def current_offset
@current_offset ||= begin
offset = @request_params.fetch('offset', -1).to_i
offset < -1 ? -1 : offset
end
end
end
end
end
end
end
end
Version data entries
11 entries across 11 versions & 1 rubygems