Class: Skypager::Proxy

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

Defined Under Namespace

Modules: Errors Classes: RequestProxy

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(options = {}) ⇒ Proxy

Returns a new instance of Proxy.



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# File 'lib/skypager/proxy.rb', line 11

def initialize(options={})
  @options            = options
  @bucket             = options[:bucket]
end

Instance Attribute Details

#access_key_id ⇒ Object (readonly)

Returns the value of attribute access_key_id.



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# File 'lib/skypager/proxy.rb', line 6

def access_key_id
  @access_key_id
end

#bucket ⇒ Object (readonly)

Returns the value of attribute bucket.



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# File 'lib/skypager/proxy.rb', line 6

def bucket
  @bucket
end

#options ⇒ Object (readonly)

Returns the value of attribute options.



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# File 'lib/skypager/proxy.rb', line 6

def options
  @options
end

#secret_access_key ⇒ Object (readonly)

Returns the value of attribute secret_access_key.



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# File 'lib/skypager/proxy.rb', line 6

def secret_access_key
  @secret_access_key
end

Instance Method Details

#call(env) ⇒ Object 



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# File 'lib/skypager/proxy.rb', line 16

def call(env)
  if @options[:bucket]
    s3_call(env)
  elsif @options[:host] || @options[:port]
    proxy_call(env)
  end
end

#proxy_call(env) ⇒ Object 



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# File 'lib/skypager/proxy.rb', line 24

def proxy_call(env)
  request_proxy.call(env)
end

#request_proxy ⇒ Object 



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# File 'lib/skypager/proxy.rb', line 32

def request_proxy
  o = @options
  @request_proxy ||= RequestProxy.new.tap {|p| p.set_config(o) }
end

#s3 ⇒ Object 



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# File 'lib/skypager/proxy.rb', line 28

def s3
  Datapimp::Sync.amazon.storage
end

#s3_call(env) ⇒ Object 



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# File 'lib/skypager/proxy.rb', line 37

def s3_call(env)
  return Errors.method_not_allowed unless %w(GET HEAD).include?(env['REQUEST_METHOD'])
  return Errors.not_found('path_info') if env['PATH_INFO'].empty?

  rack_request = Rack::Request.new(env)
  key = "#{rack_request.path}".without_leading_slash

  return Errors.not_found('no-bucket-no-key') unless bucket && key

  path = key.without_leading_slash
  last = path.split("/").last

  req = {bucket: bucket, key: path}

  req[:key]                   = "index.html" if req[:key].to_s.length == 0

  req['If-Match']              = env['HTTP_IF_MATCH'] if env['HTTP_IF_MATCH']
  req['If-None-Match']         = env['HTTP_IF_NONE_MATCH'] if env['HTTP_IF_NONE_MATCH']
  req['If-Modified-Since']     = env['HTTP_IF_MODIFIED_SINCE'] if env['HTTP_IF_MODIFIED_SINCE']
  req['If-Unmodified-Since']   = env['HTTP_IF_UNMODIFIED_SINCE'] if env['HTTP_UNMODIFIED_SINCE']

  begin
    head = s3.head_object(bucket, key, req)
  rescue => e
    return Errors.not_found('could not head ' + bucket.to_s + ' ' + key.to_s + ' ' + e.message)
  end

  return Errors.not_found('no-head') unless head

  case env['REQUEST_METHOD']
  when 'HEAD'
    gentle env, req, head
  when 'GET'
    if env['rack.hijack?']
      hijack env, req, head
    else
      gentle env, req, head
    end
  end

rescue Excon::Errors::NotFound
  return Errors.not_found('rescue')

rescue Excon::Errors::NotModified
  return Errors.not_modified

rescue Excon::Errors::PreconditionFailed
  return Errors.precondition_failed

rescue NameError => e
  # https://github.com/aws/aws-sdk-core-ruby/pull/65
  raise e unless e.message == "wrong constant name 412Error"

  return Errors.precondition_failed
end