Class: Aliyun::Log::Request

Inherits:
Object
  • Object
show all
Includes:
Common::Logging
Defined in:
lib/aliyun/log/request.rb

Constant Summary

Constants included from Common::Logging

Common::Logging::MAX_NUM_LOG, Common::Logging::ROTATE_SIZE

Instance Method Summary collapse

Methods included from Common::Logging

log_file=, log_level=, #logger, logger, logger=, logger_level

Constructor Details

#initialize(config) ⇒ Request

Returns a new instance of Request.



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# File 'lib/aliyun/log/request.rb', line 15

def initialize(config)
  @config = config
end

Instance Method Details

#canonicalized_headers(headers) ⇒ Object 



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# File 'lib/aliyun/log/request.rb', line 139

def canonicalized_headers(headers)
  h = {}
  headers.each do |k, v|
    h[k.downcase] = v if k =~ /x-log-.*/
  end
  h.keys.sort.map do |e|
    h[e]
    "#{e}:#{h[e].gsub(/^\s+/, '')}"
  end.join("\n")
end

#canonicalized_resource(resource = '', query = {}) ⇒ Object 



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# File 'lib/aliyun/log/request.rb', line 150

def canonicalized_resource(resource = '', query = {})
  return resource if query.empty?

  url = URI.parse(resource)
  sort_str = query.keys.sort.map do |e|
    "#{e}=#{query[e]}"
  end.join('&')
  "#{url}?#{sort_str}"
end

#compact_headers(body = nil, is_pb = false) ⇒ Object 



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# File 'lib/aliyun/log/request.rb', line 91

def compact_headers(body = nil, is_pb = false)
  headers = {
    'x-log-apiversion' => '0.6.0',
    'x-log-signaturemethod' => 'hmac-sha1',
    'x-log-bodyrawsize' => '0',
    'Date' => DateTime.now.httpdate,
    'User-Agent' => "aliyun-log ruby-#{RUBY_VERSION}/#{RUBY_PLATFORM}"
  }
  return headers if body.nil?

  if is_pb
    compressed = Zlib::Deflate.deflate(body.encode)
    headers['Content-Length'] = compressed.bytesize.to_s
    raise 'content length is larger than 3MB' if headers['Content-Length'].to_i > 3_145_728

    headers['Content-MD5'] = Digest::MD5.hexdigest(compressed).upcase
    headers['Content-Type'] = 'application/x-protobuf'
    headers['x-log-compresstype'] = 'deflate'
    headers['x-log-bodyrawsize'] = body.encode.bytesize.to_s
  else
    headers['Content-Type'] = 'application/json'
    headers['Content-MD5'] = Digest::MD5.hexdigest(body.encode).upcase
    headers['x-log-bodyrawsize'] = body.bytesize.to_s
  end
  headers
end

#delete(resources, payload) ⇒ Object 



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# File 'lib/aliyun/log/request.rb', line 50

def delete(resources, payload)
  do_request('DELETE', resources, payload)
end

#do_request(verb, resources, payload) ⇒ Object 



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# File 'lib/aliyun/log/request.rb', line 54

def do_request(verb, resources, payload)
  resource_path = get_resource_path(resources)
  request_options = {
    method: verb,
    url: get_request_url(resources),
    open_timeout: @config.open_timeout,
    read_timeout: @config.read_timeout
  }
  if verb == 'GET'
    headers = compact_headers
    headers['Authorization'] = signature(verb, resource_path, headers, payload)
    request_options[:headers] = headers
    request_options[:url] = URI.escape(canonicalized_resource(request_options[:url], payload))
  else
    headers = compact_headers(payload, resources[:is_pb])
    headers['Authorization'] = signature(verb, resource_path, headers)
    request_options[:headers] = headers
    payload = Zlib::Deflate.deflate(payload.encode) if resources[:is_pb]
    request_options[:payload] = payload
  end
  request = RestClient::Request.new(request_options)
  response = request.execute do |resp|
    if resp.code >= 300
      e = ServerError.new(resp)
      logger.error(e.to_s)
      raise e
    else
      resp.return!
    end
  end

  logger.debug("Received HTTP response, code: #{response.code}, headers: " \
                "#{response.headers}, body: #{response.body.force_encoding('UTF-8')}")

  response
end

#get(resources, payload = {}) ⇒ Object 



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# File 'lib/aliyun/log/request.rb', line 38

def get(resources, payload = {})
  do_request('GET', resources, payload)
end

#get_request_url(resources = {}) ⇒ Object 



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# File 'lib/aliyun/log/request.rb', line 30

def get_request_url(resources = {})
  resources ||= {}
  url = URI.parse(@config.endpoint)
  url.host = "#{resources[:project]}." + url.host if resources[:project]
  url.path = get_resource_path(resources)
  url.to_s
end

#get_resource_path(resources = {}) ⇒ Object 



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# File 'lib/aliyun/log/request.rb', line 19

def get_resource_path(resources = {})
  resources ||= {}
  res = '/'
  if resources[:logstore]
    res = "#{res}logstores"
    res = "#{res}/#{resources[:logstore]}" unless resources[:logstore].empty?
  end
  res = "#{res}/#{resources[:action]}" if resources[:action]
  res
end

#post(resources, payload) ⇒ Object 



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# File 'lib/aliyun/log/request.rb', line 42

def post(resources, payload)
  do_request('POST', resources, payload)
end

#put(resources, payload) ⇒ Object 



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# File 'lib/aliyun/log/request.rb', line 46

def put(resources, payload)
  do_request('PUT', resources, payload)
end

#signature(verb, resource, headers, query = {}) ⇒ Object 



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# File 'lib/aliyun/log/request.rb', line 118

def signature(verb, resource, headers, query = {})
  sha1_digest = OpenSSL::HMAC.digest(
    OpenSSL::Digest.new('sha1'),
    @config.access_key_secret,
    string_to_sign(verb, resource, headers, query).chomp
  )
  base64_sign = Base64.strict_encode64(sha1_digest)
  "LOG #{@config.access_key_id}:#{base64_sign}"
end

#string_to_sign(verb, resource, headers, query = {}) ⇒ Object 



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# File 'lib/aliyun/log/request.rb', line 128

def string_to_sign(verb, resource, headers, query = {})
  <<~DOC
    #{verb}
    #{headers['Content-MD5']}
    #{headers['Content-Type']}
    #{headers['Date']}
    #{canonicalized_headers(headers)}
    #{canonicalized_resource(resource, query)}
  DOC
end