Class: Larrow::Qingcloud::Connection

Inherits:
Object
  • Object
show all
Includes:
Logger
Defined in:
lib/larrow/qingcloud/connection.rb

Overview

Connection delegator for Qingcloud

Constant Summary collapse

URL_TEMPLATE = 
'https://api.qingcloud.com/iaas/?%s&signature=%s'

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Logger

#debug, #err, included, #info

Constructor Details

#initialize(access_key, secret_key, zone_id) ⇒ Connection

Returns a new instance of Connection.



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# File 'lib/larrow/qingcloud/connection.rb', line 15

def initialize(access_key, secret_key, zone_id)
  self.access_key = access_key
  self.secret_key = secret_key
  self.zone_id    = zone_id
end

Instance Attribute Details

#access_key ⇒ Object

Returns the value of attribute access_key.



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# File 'lib/larrow/qingcloud/connection.rb', line 13

def access_key
  @access_key
end

#secret_key ⇒ Object

Returns the value of attribute secret_key.



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# File 'lib/larrow/qingcloud/connection.rb', line 13

def secret_key
  @secret_key
end

#zone_id ⇒ Object

Returns the value of attribute zone_id.



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# File 'lib/larrow/qingcloud/connection.rb', line 13

def zone_id
  @zone_id
end

Instance Method Details

#get(action, params = {}) ⇒ Object 



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# File 'lib/larrow/qingcloud/connection.rb', line 56

def get action, params = {}
  service 'get', action, params
end

#service(method, action, params = {}) ⇒ Object 



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# File 'lib/larrow/qingcloud/connection.rb', line 21

def service(method, action, params = {})
  # Time.new.iso8601 cannot be recognized
  time_stamp = Time.new.utc.strftime '%Y-%m-%dT%TZ'
  params.update(
    zone: zone_id,
    action: action,
    time_stamp: time_stamp,
    access_key_id: access_key,
    version: 1,
    signature_method: 'HmacSHA256',
    signature_version: 1
  )

  request_str = params.keys.sort.map do |k|
    "#{CGI.escape k.to_s}=#{CGI.escape params[k].to_s}"
  end.join('&')

  signed_text = format "%s\n/iaas/\n%s", method.upcase, request_str

  signature = Base64.encode64(OpenSSL::HMAC.digest(
    OpenSSL::Digest.new('sha256'), secret_key||'', signed_text
  )).strip

  url = format URL_TEMPLATE, request_str, CGI.escape(signature)
  resp = Faraday.send(method.to_sym, url)
  debug "API #{action} #{request_str}"

  JSON.parse(resp.body).tap do |obj|
    if obj['ret_code'] != 0
      debug "Service Error(#{obj['ret_code']}): #{obj['message']}"
      fail ServiceError, obj['message']
    end
  end
end