class Flyyer::FlyyerRender
Attributes
deck[RW]
extension[RW]
meta[RW]
secret[RW]
strategy[RW]
template[RW]
tenant[RW]
variables[RW]
version[RW]
Public Class Methods
create(&block)
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# File lib/flyyer.rb, line 93 def self.create(&block) self.new(&block) end
new(tenant = nil, deck = nil, template = nil, version = nil, extension = nil, variables = {}, meta = {}, secret = nil, strategy = nil) { |self| ... }
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# File lib/flyyer.rb, line 97 def initialize(tenant = nil, deck = nil, template = nil, version = nil, extension = nil, variables = {}, meta = {}, secret = nil, strategy = nil) @tenant = tenant @deck = deck @template = template @version = version @extension = extension @variables = variables || {} @meta = meta @secret = secret @strategy = strategy yield(self) if block_given? end
Public Instance Methods
href()
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Create a flyyer.io string. If you are on Ruby on Rails please use .html_safe when rendering this string into the HTML
# File lib/flyyer.rb, line 157 def href raise Error.new('Missing "tenant" property') if @tenant.nil? raise Error.new('Missing "deck" property') if @deck.nil? raise Error.new('Missing "template" property') if @template.nil? raise Error.new('Got `secret` but missing `strategy`. Valid options are `HMAC` or `JWT`.') if @secret && @strategy.nil? raise Error.new('Got `strategy` but missing `secret`. You can find it in your project in Advanced settings.') if @strategy && @secret.nil? raise Error.new('Invalid signing `strategy`. Valid options are `HMAC` or `JWT`.') if @strategy && @strategy.downcase != "jwt" && @strategy.downcase != "hmac" base_href = "https://cdn.flyyer.io/render/v2/#{@tenant}" if @strategy and @strategy.downcase == "jwt" return "#{base_href}?#{self.querystring}" end final_href = "#{base_href}/#{@deck}/#{@template}" final_href << ".#{@version}" if @version final_href << ".#{@extension}" if @extension final_href << "?#{self.querystring}" end
querystring()
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# File lib/flyyer.rb, line 110 def querystring # Allow accesing the keys of @meta with symbols and strings # https://stackoverflow.com/a/10786575 @meta.default_proc = proc do |h, k| case k when String then sym = k.to_sym; h[sym] if h.key?(sym) when Symbol then str = k.to_s; h[str] if h.key?(str) end end default_v = {__v: @meta[:v].nil? ? Time.now.to_i : @meta[:v]} # This forces crawlers to refresh the image defaults = { __id: @meta[:id] || nil, _w: @meta[:width] || nil, _h: @meta[:height] || nil, _res: @meta[:resolution] || nil, _ua: @meta[:agent] || nil, } if @strategy && @secret key = @secret if @strategy.downcase == "hmac" default_query = FlyyerHash.new([defaults, @variables].inject(&:merge)).to_query puts [@deck, @template, @version || "", @extension || "", default_query].join("#") data = [@deck, @template, @version || "", @extension || "", default_query].join("#") __hmac = OpenSSL::HMAC.hexdigest('SHA256', key, data)[0..15] return FlyyerHash.new([defaults, default_v, @variables, {__hmac: __hmac}].inject(&:merge)).to_query end if @strategy.downcase == "jwt" jwt_defaults = { i: @meta[:id] || nil, w: @meta[:width] || nil, h: @meta[:height] || nil, r: @meta[:resolution] || nil, u: @meta[:agent] || nil, var: @variables, } payload = [{ d: @deck, t: @template, v: @version, e: @extension }, jwt_defaults].inject(&:merge) __jwt = JWT.encode(payload, key, 'HS256') return FlyyerHash.new({ __jwt: __jwt }.merge(default_v)).to_query end else return FlyyerHash.new([default_v, defaults, @variables].inject(&:merge)).to_query end end