Class: Publish2Cloud::Publisher

Inherits:
Object
  • Object
show all
Defined in:
lib/publish2cloud/publish2cloud.rb

Instance Method Summary collapse

Constructor Details

#initialize(s3_access, s3_secret, s3_bucket, cf_distribution, max_age = nil) ⇒ Publisher

Returns a new instance of Publisher.



24
25
26
27
28
29
30
 
# File 'lib/publish2cloud/publish2cloud.rb', line 24

def initialize s3_access, s3_secret, s3_bucket, cf_distribution, max_age = nil
  @s3_access = s3_access
  @s3_secret = s3_secret
  @s3_bucket = s3_bucket
  @cf_distribution = cf_distribution
  @max_age = max_age
end

Instance Method Details

#ensure_s3_bucket_exist ⇒ Object 



176
177
178
179
180
181
182
183
184
185
186
 
# File 'lib/publish2cloud/publish2cloud.rb', line 176

def ensure_s3_bucket_exist
  s3= RightAws::S3.new(@s3_access, @s3_secret, {:logger => Logger.new('log/publish2cloud.log')})
  bucket = s3.bucket(@s3_bucket)
  begin
    bucket.keys
    puts "Bucket '#{@s3_bucket}' exists"
  rescue
    puts "Going to creat '#{@s3_bucket}'"
    RightAws::S3::Bucket.create(s3, @s3_bucket, true, 'public-read')
  end
end

#fetch_and_upload_to_s3(url, s3_key) ⇒ Object

aws.amazon.com/cloudfront/faqs/#How_long_will_Amazon_CloudFront_keep_my_files headers looks like this: => public, max-age=86400’, ‘Content-Type’ => ‘text/html; charset=utf-8’ => ‘max-age=0, private, must-revalidate’, ‘Content-Type’ => ‘text/html; charset=utf-8’



53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
 
# File 'lib/publish2cloud/publish2cloud.rb', line 53

def fetch_and_upload_to_s3 url, s3_key
  res = Net::HTTP.get_response URI.parse(url)

  raise res.code if res.code != '200'
  #puts res.body

  s3= RightAws::S3.new(@s3_access, @s3_secret, {:logger => Logger.new('log/publish2cloud.log')})
  bucket = s3.bucket(@s3_bucket)
  if @max_age
    headers = {'Cache-Control' => "public, max-age=#{@max_age}", 'Content-Type' => 'text/html; charset=utf-8'}
  else
    headers = {'Content-Type' => 'text/html; charset=utf-8'}
  end
  bucket.put(s3_key, res.body, {}, 'public-read', headers)
  
  puts "Uploaded #{s3_key}"
end

#invalidate(paths_as_array) ⇒ Object 



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
 
# File 'lib/publish2cloud/publish2cloud.rb', line 71

def invalidate paths_as_array
  paths = nil
  
  if paths_as_array.length > 0
    paths = '<Path>/' + paths_as_array.join('</Path><Path>/') + '</Path>'
  end

  date = Time.now.utc
  date = date.strftime("%a, %d %b %Y %H:%M:%S %Z")
  digest = HMAC::SHA1.new(@s3_secret)
  digest << date

  uri = URI.parse('https://cloudfront.amazonaws.com/2010-08-01/distribution/' + @cf_distribution + '/invalidation')

  if paths != nil
    req = Net::HTTP::Post.new(uri.path)
  else
    req = Net::HTTP::Get.new(uri.path)
  end

  req.initialize_http_header({
    'x-amz-date' => date,
    'Content-Type' => 'text/xml',
    'Authorization' => "AWS %s:%s" % [@s3_access, Base64.encode64(digest.digest)]
  })

  if paths != nil
    req.body = "<InvalidationBatch>" + paths + "<CallerReference>ref_#{Time.now.utc.to_i}</CallerReference></InvalidationBatch>"
  end

  #puts req.body

  http = Net::HTTP.new(uri.host, uri.port)
  http.use_ssl = true
  http.verify_mode = OpenSSL::SSL::VERIFY_NONE
  res = http.request(req)

  # TODO: Check status code and pretty print the output
  # Tip: pipe the output to | xmllint -format - |less for easier reading
  #puts $STDERR res.code
  #puts res.body
  puts "Invalidated #{paths_as_array}"
  return 0
end

#run(urls) ⇒ Object 



32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
 
# File 'lib/publish2cloud/publish2cloud.rb', line 32

def run urls
  ensure_s3_bucket_exist
  set_root 'index.html'
  
  urls.each {|x|
    uri = URI.parse(x)
    if uri.path == "" or uri.path == "/"
      s3_key = "index.html"
    else
      s3_key = uri.path[1..-1]
    end
    puts "#{x} -> #{s3_key}"
    fetch_and_upload_to_s3 x, s3_key
    invalidate [s3_key]
  }
end

#set_root(newobj) ⇒ Object 



116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
 
# File 'lib/publish2cloud/publish2cloud.rb', line 116

def set_root newobj
  date = Time.now.utc
  date = date.strftime("%a, %d %b %Y %H:%M:%S %Z")
  digest = HMAC::SHA1.new(@s3_secret)
  digest << date

  uri = URI.parse('https://cloudfront.amazonaws.com/2010-08-01/distribution/' + @cf_distribution + '/config')

  req = Net::HTTP::Get.new(uri.path)

  req.initialize_http_header({
    'x-amz-date' => date,
    'Content-Type' => 'text/xml',
    'Authorization' => "AWS %s:%s" % [@s3_access, Base64.encode64(digest.digest)]
  })

  http = Net::HTTP.new(uri.host, uri.port)
  http.use_ssl = true
  http.verify_mode = OpenSSL::SSL::VERIFY_NONE
  res = http.request(req)
  puts res
  match = /<DefaultRootObject>(.*?)<\/DefaultRootObject>/.match(res.body)
  currentobj = match ? match[1] : nil

  if newobj == currentobj
    puts "'#{currentobj}' is already the DefaultRootObject"
    return -1
  end

  etag = res.header['etag']

  req = Net::HTTP::Put.new(uri.path)

  req.initialize_http_header({
    'x-amz-date' => date,
    'Content-Type' => 'text/xml',
    'Authorization' => "AWS %s:%s" % [@s3_access, Base64.encode64(digest.digest)],
    'If-Match' => etag
  })

  if currentobj == nil
    regex = /<\/DistributionConfig>/
    replace = "<DefaultRootObject>#{newobj}</DefaultRootObject></DistributionConfig>"
  else
    regex = /<DefaultRootObject>(.*?)<\/DefaultRootObject>/
    replace = "<DefaultRootObject>#{newobj}</DefaultRootObject>"
  end

  req.body = res.body.gsub(regex, replace)

  http = Net::HTTP.new(uri.host, uri.port)
  http.use_ssl = true
  http.verify_mode = OpenSSL::SSL::VERIFY_NONE
  res = http.request(req)

  puts res.code
  puts res.body
  return 0
end