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 108

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 96

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 81

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

  if uri.port == 443
    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 71

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 245

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 171

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

#get(uri, opts = {}) ⇒ Object 



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# File 'lib/dagger.rb', line 112

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?

  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]

  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 235

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 167

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 159

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 163

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 175

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

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

  headers = DEFAULT_HEADERS.merge(opts[:headers] || {})

  query = if data.is_a?(String)
    data
  elsif opts[:json]
    headers['Content-Type'] = 'application/json'
    headers['Accept'] = 'application/json' if headers['Accept'].nil?
    Oj.dump(data, mode: :compat) # compat ensures symbols are converted to strings
  else # querystring, then
    Utils.encode(data)
  end

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

  if @http.respond_to?(:started?) # regular Net::HTTP
    args = [method.to_s.downcase, uri.path, query, 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.path, headers)
    # req.set_form_data(query)
    req.body = query
    resp, data = @http.send_request(uri, req)
  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 method.to_s.downcase != 'get' && retries = opts[:retries] and retries.to_i > 0
    debug "[#{DAGGER_NAME}] 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 231

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