Class: MatrixSdk::Api

Inherits:
Object show all
Extended by:
Extensions
Includes:
Logging
Defined in:
lib/matrix_sdk/api.rb

Constant Summary collapse

USER_AGENT = 
"Ruby Matrix SDK v#{MatrixSdk::VERSION}"
DEFAULT_HEADERS = 
{
  'accept' => 'application/json',
  'user-agent' => USER_AGENT
}.freeze

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Extensions

events, ignore_inspect

Methods included from Logging

#logger, #logger=

Constructor Details

#initialize(homeserver, **params) ⇒ Api

Returns a new instance of Api.

Parameters:

  • homeserver (String, URI) —

    The URL to the Matrix homeserver, without the /_matrix/ part

  • params (Hash) —

    Additional parameters on creation

Options Hash (**params):

  • :protocols (Symbol[]) —

    The protocols to include (:AS, :CS, :IS, :SS), defaults to :CS

  • :address (String) —

    The connection address to the homeserver, if different to the HS URL

  • :port (Integer) —

    The connection port to the homeserver, if different to the HS URL

  • :access_token (String) —

    The access token to use for the connection

  • :device_id (String) —

    The ID of the logged in decide to use

  • :autoretry (Boolean) — default: true —

    Should requests automatically be retried in case of rate limits

  • :validate_certificate (Boolean) — default: false —

    Should the connection require valid SSL certificates

  • :transaction_id (Integer) — default: 0 —

    The starting ID for transactions

  • :backoff_time (Numeric) — default: 5000 —

    The request backoff time in milliseconds

  • :open_timeout (Numeric) — default: 60 —

    The timeout in seconds to wait for a TCP session to open

  • :read_timeout (Numeric) — default: 240 —

    The timeout in seconds for reading responses

  • :global_headers (Hash) —

    Additional headers to set for all requests

  • :skip_login (Boolean) —

    Should the API skip logging in if the HS URL contains user information

  • :well_known (Hash) —

    The .well-known object that the server was discovered through, should not be set manually

Raises:

  • (ArgumentError) 


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# File 'lib/matrix_sdk/api.rb', line 42

def initialize(homeserver, **params)
  @homeserver = homeserver
  raise ArgumentError, 'Homeserver URL must be String or URI' unless @homeserver.is_a?(String) || @homeserver.is_a?(URI)

  @homeserver = URI.parse("#{'https://' unless @homeserver.start_with? 'http'}#{@homeserver}") unless @homeserver.is_a? URI
  @homeserver.path.gsub!(/\/?_matrix\/?/, '') if @homeserver.path =~ /_matrix\/?$/
  raise ArgumentError, 'Please use the base URL for your HS (without /_matrix/)' if @homeserver.path.include? '/_matrix/'

  @proxy_uri = params.fetch(:proxy_uri, nil)
  @connection_address = params.fetch(:address, nil)
  @connection_port = params.fetch(:port, nil)
  @access_token = params.fetch(:access_token, nil)
  @device_id = params.fetch(:device_id, nil)
  @autoretry = params.fetch(:autoretry, true)
  @validate_certificate = params.fetch(:validate_certificate, false)
  @transaction_id = params.fetch(:transaction_id, 0)
  @backoff_time = params.fetch(:backoff_time, 5000)
  @open_timeout = params.fetch(:open_timeout, 60)
  @read_timeout = params.fetch(:read_timeout, 240)
  @well_known = params.fetch(:well_known, {})
  @global_headers = DEFAULT_HEADERS.dup
  @global_headers.merge!(params.fetch(:global_headers)) if params.key? :global_headers
  @http = nil

  ([params.fetch(:protocols, [:CS])].flatten - protocols).each do |proto|
    self.class.include MatrixSdk::Protocols.const_get(proto)
  end

  (user: @homeserver.user, password: @homeserver.password) if @homeserver.user && @homeserver.password && !@access_token && !params[:skip_login] && protocol?(:CS)
  @homeserver.userinfo = '' unless params[:skip_login]
end

Instance Attribute Details

#access_token ⇒ Object

Returns the value of attribute access_token.



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# File 'lib/matrix_sdk/api.rb', line 21

def access_token
  @access_token
end

#autoretry ⇒ Object

Returns the value of attribute autoretry.



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# File 'lib/matrix_sdk/api.rb', line 21

def autoretry
  @autoretry
end

#connection_address ⇒ Object

Returns the value of attribute connection_address.



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# File 'lib/matrix_sdk/api.rb', line 21

def connection_address
  @connection_address
end

#connection_port ⇒ Object

Returns the value of attribute connection_port.



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# File 'lib/matrix_sdk/api.rb', line 21

def connection_port
  @connection_port
end

#device_id ⇒ Object

Returns the value of attribute device_id.



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# File 'lib/matrix_sdk/api.rb', line 21

def device_id
  @device_id
end

#global_headers ⇒ Object

Returns the value of attribute global_headers.



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# File 'lib/matrix_sdk/api.rb', line 21

def global_headers
  @global_headers
end

#homeserver ⇒ Object

Returns the value of attribute homeserver.



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# File 'lib/matrix_sdk/api.rb', line 22

def homeserver
  @homeserver
end

#open_timeout ⇒ Object

Returns the value of attribute open_timeout.



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# File 'lib/matrix_sdk/api.rb', line 22

def open_timeout
  @open_timeout
end

#proxy_uri ⇒ Object

Returns the value of attribute proxy_uri.



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# File 'lib/matrix_sdk/api.rb', line 22

def proxy_uri
  @proxy_uri
end

#read_timeout ⇒ Object

Returns the value of attribute read_timeout.



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# File 'lib/matrix_sdk/api.rb', line 22

def read_timeout
  @read_timeout
end

#validate_certificate ⇒ Object

Returns the value of attribute validate_certificate.



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# File 'lib/matrix_sdk/api.rb', line 22

def validate_certificate
  @validate_certificate
end

#well_known ⇒ Object (readonly)

Returns the value of attribute well_known.



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# File 'lib/matrix_sdk/api.rb', line 22

def well_known
  @well_known
end

Class Method Details

.new_for_domain(domain, target: :client, keep_wellknown: false, ssl: true, **params) ⇒ API

Create an API connection to a domain entry

This will follow the server discovery spec for client-server and federation

Examples:

Opening a Matrix API connection to a homeserver

hs = MatrixSdk::API.new_for_domain 'example.com'
hs.connection_address
# => 'matrix.example.com'
hs.connection_port
# => 443

Parameters:

  • domain (String) —

    The domain to set up the API connection for, can contain a ‘:’ to denote a port

  • target (:client, :identity, :server) (defaults to: :client) —

    The target for the domain lookup

  • keep_wellknown (Boolean) (defaults to: false) —

    Should the .well-known response be kept for further handling

  • params (Hash) —

    Additional options to pass to .new

Returns:

  • (API) —

    The API connection



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# File 'lib/matrix_sdk/api.rb', line 90

def self.new_for_domain(domain, target: :client, keep_wellknown: false, ssl: true, **params)
  domain, port = domain.split(':')
  uri = URI("http#{ssl ? 's' : ''}://#{domain}")
  well_known = nil
  target_uri = nil
  logger = ::Logging.logger[self]
  logger.debug "Resolving #{domain}"

  if !port.nil? && !port.empty?
    # If the domain is fully qualified according to Matrix (FQDN and port) then skip discovery
    target_uri = URI("https://#{domain}:#{port}")
  elsif target == :server
    # Attempt SRV record discovery
    target_uri = begin
                   require 'resolv'
                   resolver = Resolv::DNS.new
                   srv = "_matrix._tcp.#{domain}"
                   logger.debug "Trying DNS #{srv}..."
                   d = resolver.getresource(srv, Resolv::DNS::Resource::IN::SRV)
                   d
                 rescue StandardError => e
                   logger.debug "DNS lookup failed with #{e.class}: #{e.message}"
                   nil
                 end

    if target_uri.nil?
      # Attempt .well-known discovery for server-to-server
      well_known = begin
                     wk_uri = URI("https://#{domain}/.well-known/matrix/server")
                     logger.debug "Trying #{wk_uri}..."
                     data = Net::HTTP.start(wk_uri.host, wk_uri.port, use_ssl: true, open_timeout: 5, read_timeout: 5, write_timeout: 5) do |http|
                       http.get(wk_uri.path).body
                     end
                     JSON.parse(data)
                   rescue StandardError => e
                     logger.debug "Well-known failed with #{e.class}: #{e.message}"
                     nil
                   end

      target_uri = well_known['m.server'] if well_known&.key?('m.server')
    else
      target_uri = URI("https://#{target_uri.target}:#{target_uri.port}")
    end
  elsif %i[client identity].include? target
    # Attempt .well-known discovery
    well_known = begin
                   wk_uri = URI("https://#{domain}/.well-known/matrix/client")
                   logger.debug "Trying #{wk_uri}..."
                   data = Net::HTTP.start(wk_uri.host, wk_uri.port, use_ssl: true, open_timeout: 5, read_timeout: 5, write_timeout: 5) do |http|
                     http.get(wk_uri.path).body
                   end
                   data = JSON.parse(data)
                 rescue StandardError => e
                   logger.debug "Well-known failed with #{e.class}: #{e.message}"
                   nil
                 end

    if well_known
      key = 'm.homeserver'
      key = 'm.identity_server' if target == :identity

      if well_known.key?(key) && well_known[key].key?('base_url')
        uri = URI(well_known[key]['base_url'])
        target_uri = uri
      end
    end
  end
  logger.debug "Using #{target_uri.inspect}"

  # Fall back to direct domain connection
  target_uri ||= URI("https://#{domain}:8448")

  params[:well_known] = well_known if keep_wellknown

  new(uri,
      params.merge(
        address: target_uri.host,
        port: target_uri.port
      ))
end

Instance Method Details

#protocol?(protocol) ⇒ Boolean

Check if a protocol is enabled on the API connection

Examples:

Checking for identity server API support

api.protocol? :IS
# => false

Parameters:

  • protocol (Symbol) —

    The protocol to check

Returns:

  • (Boolean) —

    Is the protocol enabled



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# File 'lib/matrix_sdk/api.rb', line 194

def protocol?(protocol)
  protocols.include? protocol
end

#protocols ⇒ Symbol[]

Get a list of enabled protocols on the API client

Examples:

MatrixSdk::Api.new_for_domain('matrix.org').protocols
# => [:IS, :CS]

Returns:

  • (Symbol[]) —

    An array of enabled APIs



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# File 'lib/matrix_sdk/api.rb', line 178

def protocols
  self
    .class.included_modules
    .reject { |m| m&.name.nil? }
    .select { |m| m.name.start_with? 'MatrixSdk::Protocols::' }
    .map { |m| m.name.split('::').last.to_sym }
end

#request(method, api, path, **options) ⇒ Object

Perform a raw Matrix API request

Examples:

Simple API query

api.request(:get, :client_r0, '/account/whoami')
# => { :user_id => "@alice:matrix.org" }

Advanced API request

api.request(:post,
            :media_r0,
            '/upload',
            body_stream: open('./file'),
            headers: { 'content-type' => 'image/png' })
# => { :content_uri => "mxc://example.com/AQwafuaFswefuhsfAFAgsw" }

Parameters:

  • method (Symbol) —

    The method to use, can be any of the ones under Net::HTTP

  • api (Symbol) —

    The API symbol to use, :client_r0 is the current CS one

  • path (String) —

    The API path to call, this is the part that comes after the API definition in the spec

  • options (Hash) —

    Additional options to pass along to the request

Options Hash (**options):

  • :query (Hash) —

    Query parameters to set on the URL

  • :body (Hash, String) —

    The body to attach to the request, will be JSON-encoded if sent as a hash

  • :body_stream (IO) —

    A body stream to attach to the request

  • :headers (Hash) —

    Additional headers to set on the request

  • :skip_auth (Boolean) — default: false —

    Skip authentication



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# File 'lib/matrix_sdk/api.rb', line 265

def request(method, api, path, **options)
  url = homeserver.dup.tap do |u|
    u.path = api_to_path(api) + path
    u.query = [u.query, URI.encode_www_form(options.fetch(:query))].flatten.compact.join('&') if options[:query]
    u.query = nil if u.query.nil? || u.query.empty?
  end
  request = Net::HTTP.const_get(method.to_s.capitalize.to_sym).new url.request_uri
  request.body = options[:body] if options.key? :body
  request.body = request.body.to_json if options.key?(:body) && !request.body.is_a?(String)
  request.body_stream = options[:body_stream] if options.key? :body_stream

  global_headers.each { |h, v| request[h] = v }
  if request.body || request.body_stream
    request.content_type = 'application/json'
    request.content_length = (request.body || request.body_stream).size
  end

  request['authorization'] = "Bearer #{access_token}" if access_token && !options.fetch(:skip_auth, false)
  if options.key? :headers
    options[:headers].each do |h, v|
      request[h.to_s.downcase] = v
    end
  end

  failures = 0
  loop do
    raise MatrixConnectionError, "Server still too busy to handle request after #{failures} attempts, try again later" if failures >= 10

    req_id = ('A'..'Z').to_a.sample(4).join

    print_http(request, id: req_id)
    begin
      dur_start = Time.now
      response = http.request request
      dur_end = Time.now
      duration = dur_end - dur_start
    rescue EOFError
      logger.error 'Socket closed unexpectedly'
      raise
    end
    print_http(response, duration: duration, id: req_id)

    data = JSON.parse(response.body, symbolize_names: true) rescue nil

    if response.is_a? Net::HTTPTooManyRequests
      raise MatrixRequestError.new_by_code(data, response.code) unless autoretry

      failures += 1
      waittime = data[:retry_after_ms] || data[:error][:retry_after_ms] || @backoff_time
      sleep(waittime.to_f / 1000.0)
      next
    end

    return MatrixSdk::Response.new self, data if response.is_a? Net::HTTPSuccess
    raise MatrixRequestError.new_by_code(data, response.code) if data

    raise MatrixConnectionError.class_by_code(response.code), response
  end
end

#transaction_id ⇒ String

Generate a transaction ID

Returns:

  • (String) —

    An arbitrary transaction ID



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# File 'lib/matrix_sdk/api.rb', line 328

def transaction_id
  ret = @transaction_id ||= 0
  @transaction_id = @transaction_id.succ
  ret
end