1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
|
require 'sinatra'
require 'sprockets'
require 'sinatra/content_for'
require 'rufus/scheduler'
require 'coffee-script'
require 'sass'
require 'json'
SCHEDULER = Rufus::Scheduler.start_new
set :root, Dir.pwd
set :sprockets, Sprockets::Environment.new(settings.root)
set :assets_prefix, '/assets'
set :digest_assets, false
['assets/javascripts', 'assets/stylesheets', 'assets/fonts', 'assets/images', 'widgets', File.expand_path('../../javascripts', __FILE__)]. each do |path|
settings.sprockets.append_path path
end
set server: 'thin', connections: [], history: {}
set :public_folder, File.join(settings.root, 'public')
set :views, File.join(settings.root, 'dashboards')
set :default_dashboard, nil
set :auth_token, nil
helpers Sinatra::ContentFor
helpers do
def protected!
# override with auth logic
end
end
get '/events', provides: 'text/event-stream' do
protected!
response.headers['X-Accel-Buffering'] = 'no' # Disable buffering for nginx
stream :keep_open do |out|
settings.connections << out
out << latest_events
out.callback { settings.connections.delete(out) }
end
end
get '/' do
begin
redirect "/" + (settings.default_dashboard || first_dashboard).to_s
rescue NoMethodError => e
raise Exception.new("There are no dashboards in your dashboard directory.")
end
end
get '/:dashboard' do
protected!
if File.exist? File.join(settings.views, "#{params[:dashboard]}.erb")
erb params[:dashboard].to_sym
else
halt 404
end
end
get '/views/:widget?.html' do
protected!
widget = params[:widget]
send_file File.join(settings.root, 'widgets', widget, "#{widget}.html")
end
post '/widgets/:id' do
request.body.rewind
body = JSON.parse(request.body.read)
auth_token = body.delete("auth_token")
if !settings.auth_token || settings.auth_token == auth_token
send_event(params['id'], body)
204 # response without entity body
else
status 401
"Invalid API key\n"
end
end
not_found do
send_file File.join(settings.public_folder, '404.html')
end
def development?
ENV['RACK_ENV'] == 'development'
end
def production?
ENV['RACK_ENV'] == 'production'
end
def send_event(id, body)
body[:id] = id
body[:updatedAt] ||= Time.now.to_i
event = format_event(body.to_json)
Sinatra::Application.settings.history[id] = event
Sinatra::Application.settings.connections.each { |out| out << event }
end
def format_event(body)
"data: #{body}\n\n"
end
def latest_events
settings.history.inject("") do |str, (id, body)|
str << body
end
end
def first_dashboard
files = Dir[File.join(settings.views, '*.erb')].collect { |f| f.match(/(\w*).erb/)[1] }
files -= ['layout']
files.first
end
Dir[File.join(settings.root, 'lib', '**', '*.rb')].each {|file| require file }
{}.to_json # Forces your json codec to initialize (in the event that it is lazily loaded). Does this before job threads start.
job_path = ENV["JOB_PATH"] || 'jobs'
files = Dir[File.join(settings.root, job_path, '/*.rb')]
files.each { |job| require(job) }
|
