Class: Dagger::Client

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

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(http, host = nil) ⇒ Client

Returns a new instance of Client.



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# File 'lib/dagger.rb', line 119

def initialize(http, host = nil)
  @http, @host = http, host
end

Class Method Details

.init(uri, opts) ⇒ Object 



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# File 'lib/dagger.rb', line 107

def self.init(uri, opts)
  uri  = Utils.parse_uri(uri)

  http = if opts.delete(:persistent)
    init_persistent(opts)
  else
    init_connection(uri, opts)
  end

  new(http, uri.scheme_and_host)
end

.init_connection(uri, opts = {}) ⇒ Object 



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# File 'lib/dagger.rb', line 92

def self.init_connection(uri, opts = {})
  http = Net::HTTP.new(opts[:ip] || uri.host, uri.port)

  if uri.port == 443 || uri.scheme == 'https'
    http.use_ssl = true if http.respond_to?(:use_ssl=) # persistent does it automatically
    http.verify_mode = opts[:verify_ssl] === false ? OpenSSL::SSL::VERIFY_NONE : OpenSSL::SSL::VERIFY_PEER
  end

  [:keep_alive_timeout, :open_timeout, :read_timeout, :ssl_version, :ciphers].each do |key|
    http.send("#{key}=", opts[key] || DEFAULTS[key]) if (opts.has_key?(key) || DEFAULTS.has_key?(key))
  end

  http
end

.init_persistent(opts = {}) ⇒ Object 



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# File 'lib/dagger.rb', line 82

def self.init_persistent(opts = {})
  # this line below forces one connection manager between multiple threads
  # @persistent ||= Dagger::ConnectionManager.new(opts)

  # here we initialize a connection manager for each thread
  Thread.current[:dagger_persistent] ||= begin
    Dagger::ConnectionManager.new(opts)
  end
end

Instance Method Details

#close ⇒ Object 



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# File 'lib/dagger.rb', line 257

def close
  if @http.is_a?(Dagger::ConnectionManager)
    @http.shutdown # calls finish on pool connections
  else
    @http.finish if @http.started?
  end
end

#delete(uri, data, options = {}) ⇒ Object 



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# File 'lib/dagger.rb', line 184

def delete(uri, data, options = {})
  request(:delete, uri, data, options)
end

#get(uri, opts = {}) ⇒ Object 



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# File 'lib/dagger.rb', line 123

def get(uri, opts = {})
  uri = Utils.resolve_uri(uri, @host, opts[:query])

  if @host != uri.scheme_and_host
    raise ArgumentError.new("#{uri.scheme_and_host} does not match #{@host}")
  end

  opts[:follow] = 10 if opts[:follow] == true
  headers = opts[:headers] || {}
  headers['Accept'] = 'application/json' if opts[:json] && headers['Accept'].nil?
  headers['Content-Type'] = 'application/json' if opts[:json] && opts[:body] && opts[:body].size > 0

  if opts[:ip]
    headers['Host'] = uri.host
    uri = opts[:ip]
  end

  request = Net::HTTP::Get.new(uri, DEFAULT_HEADERS.merge(headers))
  request.basic_auth(opts.delete(:username), opts.delete(:password)) if opts[:username]
  request.body = Utils.encode_body(opts[:body], opts) if opts[:body] && opts[:body].size > 0

  if @http.respond_to?(:started?) # regular Net::HTTP
    @http.start unless @http.started?
    resp, data = @http.request(request)
  else # persistent
    resp, data = @http.send_request(uri, request)
  end

  if REDIRECT_CODES.include?(resp.code.to_i) && resp['Location'] && (opts[:follow] && opts[:follow] > 0)
    opts[:follow] -= 1
    debug { "Following redirect to #{resp['Location']}" }
    return get(resp['Location'], opts)
  end

  @response = build_response(resp, data || resp.body)

rescue Errno::ECONNREFUSED, Errno::ECONNRESET, Errno::ETIMEDOUT, Errno::EINVAL, Timeout::Error, \
  Net::OpenTimeout, Net::ReadTimeout, Net::HTTPBadResponse, Net::HTTPHeaderSyntaxError, Net::ProtocolError, \
  SocketError, EOFError, OpenSSL::SSL::SSLError => e

  if retries = opts[:retries] and retries.to_i > 0
    debug { "Got #{e.class}! Retrying in a sec (#{retries} retries left)" }
    sleep (opts[:retry_wait] || DEFAULT_RETRY_WAIT)
    get(uri, opts.merge(retries: retries - 1))
  else
    raise
  end
end

#open(&block) ⇒ Object 



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# File 'lib/dagger.rb', line 247

def open(&block)
  if @http.is_a?(Dagger::ConnectionManager)
    instance_eval(&block)
  else
    @http.start do
      instance_eval(&block)
    end
  end
end

#patch(uri, data, options = {}) ⇒ Object 



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# File 'lib/dagger.rb', line 180

def patch(uri, data, options = {})
  request(:patch, uri, data, options)
end

#post(uri, data, options = {}) ⇒ Object 



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# File 'lib/dagger.rb', line 172

def post(uri, data, options = {})
  request(:post, uri, data, options)
end

#put(uri, data, options = {}) ⇒ Object 



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# File 'lib/dagger.rb', line 176

def put(uri, data, options = {})
  request(:put, uri, data, options)
end

#request(method, uri, data, opts = {}) ⇒ Object 



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# File 'lib/dagger.rb', line 188

def request(method, uri, data, opts = {})
  if method.to_s.downcase == 'get'
    data ||= opts[:body]
    return get(uri, opts.merge(body: data))
  end

  uri = Utils.resolve_uri(uri, @host, opts[:query])
  if @host != uri.scheme_and_host
    raise ArgumentError.new("#{uri.scheme_and_host} does not match #{@host}")
  end

  headers = DEFAULT_HEADERS.merge(opts[:headers] || {})
  body = Utils.encode_body(data, opts)

  if opts[:username] # opts[:password] is optional
    str = [opts[:username], opts[:password]].compact.join(':')
    headers['Authorization'] = 'Basic ' + Base64.encode64(str)
  end

  if opts[:json]
    headers['Content-Type'] = 'application/json'
    headers['Accept'] = 'application/json' if headers['Accept'].nil?
  end

  start = Time.now
  debug { "Sending #{method} request to #{uri.request_uri} with headers #{headers.inspect} -- #{query}" }

  if @http.respond_to?(:started?) # regular Net::HTTP
    args = [method.to_s.downcase, uri.request_uri, body, headers]
    args.delete_at(2) if args[0] == 'delete' # Net::HTTP's delete does not accept data

    @http.start unless @http.started?
    resp, data = @http.send(*args)
  else # Net::HTTP::Persistent
    req = Kernel.const_get("Net::HTTP::#{method.capitalize}").new(uri.request_uri, headers)
    req.body = body
    resp, data = @http.send_request(uri, req)
  end

  debug { "Got response #{resp.code} in #{(Time.now - start).round(2)}s: #{data || resp.body}" }
  @response = build_response(resp, data || resp.body)

rescue Errno::ECONNREFUSED, Errno::ECONNRESET, Errno::ETIMEDOUT, Errno::EINVAL, Timeout::Error, \
  Net::OpenTimeout, Net::ReadTimeout, Net::HTTPBadResponse, Net::HTTPHeaderSyntaxError, Net::ProtocolError, \
  SocketError, EOFError, OpenSSL::SSL::SSLError => e

  if method.to_s.downcase != 'get' && retries = opts[:retries] and retries.to_i > 0
    debug { "Got #{e.class}! Retrying in a sec (#{retries} retries left)" }
    sleep (opts[:retry_wait] || DEFAULT_RETRY_WAIT)
    request(method, uri, data, opts.merge(retries: retries - 1))
  else
    raise
  end
end

#response ⇒ Object 



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# File 'lib/dagger.rb', line 243

def response
  @response or raise 'Request not sent!'
end