Class: HaveAPI::Client::Communicator

Inherits:
Object
  • Object
show all
Defined in:
lib/haveapi/client/communicator.rb

Class Attribute Summary collapse

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(url, v = nil) ⇒ Communicator 



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# File 'lib/haveapi/client/communicator.rb', line 21

def initialize(url, v = nil)
  @url = url
  @auth = Authentication::NoAuth.new(self, {}, {})
  @rest = RestClient::Resource.new(@url)
  @version = v
  @identity = 'haveapi-client-ruby'
end

Class Attribute Details

.auth_methods ⇒ Object (readonly)

Returns the value of attribute auth_methods.



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# File 'lib/haveapi/client/communicator.rb', line 10

def auth_methods
  @auth_methods
end

Instance Attribute Details

#auth ⇒ Object (readonly)

Returns the value of attribute auth.



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# File 'lib/haveapi/client/communicator.rb', line 18

def auth
  @auth
end

#identity ⇒ Object

Returns the value of attribute identity.



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# File 'lib/haveapi/client/communicator.rb', line 19

def identity
  @identity
end

#url ⇒ Object (readonly)

Returns the value of attribute url.



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# File 'lib/haveapi/client/communicator.rb', line 18

def url
  @url
end

Class Method Details

.register_auth_method(name, klass) ⇒ Object 



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# File 'lib/haveapi/client/communicator.rb', line 12

def register_auth_method(name, klass)
  @auth_methods ||= {}
  @auth_methods[name] = klass
end

Instance Method Details

#auth_save ⇒ Object 



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# File 'lib/haveapi/client/communicator.rb', line 60

def auth_save
  @auth.save
end

#authenticate(auth_method, options = {}, &block) ⇒ Object

Authenticate user with selected auth_method. auth_method is a name of registered authentication provider. options are specific for each authentication provider.



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# File 'lib/haveapi/client/communicator.rb', line 48

def authenticate(auth_method, options = {}, &block)
  desc = describe_api(@version)

  @auth = self.class.auth_methods[auth_method].new(
    self,
    desc[:authentication][auth_method],
    options,
    &block
  )
  @rest = @auth.resource || @rest
end

#available_versions ⇒ Object 



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# File 'lib/haveapi/client/communicator.rb', line 64

def available_versions
  description_for(path_for, {describe: :versions})
end

#call(action, params = {}, raw: false) ⇒ Object 



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# File 'lib/haveapi/client/communicator.rb', line 117

def call(action, params = {}, raw: false)
  args = []
  input_namespace = action.input && action.namespace(:input)
  meta = nil

  if params.is_a?(Hash) && params[:meta]
    meta = params[:meta]
    params.delete(:meta)
  end

  if %w(POST PUT).include?(action.http_method)
    ns = {}
    ns[input_namespace] = params if input_namespace
    ns[:_meta] = meta if meta
    ns.update(@auth.request_payload)

    args << ns.to_json
    args << {content_type: :json, accept: :json, user_agent: @identity}.update(@auth.request_headers)

  elsif %w(GET DELETE).include?(action.http_method)
    get_params = {}

    params.each do |k, v|
      get_params["#{input_namespace}[#{k}]"] = v
    end

    meta.each do |k, v|
      get_params["_meta[#{k}]"] = v # FIXME: read _meta namespace from the description

    end if meta

    args << {params: get_params.update(@auth.request_query_params), accept: :json, user_agent: @identity}.update(@auth.request_headers)
  end

  begin
    response = parse(@rest[action.prepared_path].method(action.http_method.downcase.to_sym).call(*args))

  rescue RestClient::Forbidden
    return error('Access forbidden. Bad user name or password? Not authorized?')

  rescue RestClient::ResourceNotFound => e
    response = parse(e.http_body)

  rescue RestClient::BadRequest => e
    response = parse(e.http_body)

  rescue => e
    return error("Fatal API error: #{e.inspect}")
  end

  if response[:status]
    if raw
      ok(JSON.pretty_generate(response[:response]))
    else
      ok(response[:response])
    end

  else
    error(response[:message], response[:errors])
  end
end

#compatible? ⇒ :compatible, ... 



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# File 'lib/haveapi/client/communicator.rb', line 36

def compatible?
  description_for(path_for, {describe: :versions})
  @proto_version == HaveAPI::Client::PROTOCOL_VERSION ? :compatible
                                                      : :imperfect

rescue ProtocolError
  false
end

#describe_action(action) ⇒ Object 



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# File 'lib/haveapi/client/communicator.rb', line 84

def describe_action(action)
  description_for(action.prepared_help)
end

#describe_api(v = nil) ⇒ Object 



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# File 'lib/haveapi/client/communicator.rb', line 68

def describe_api(v=nil)
  description_for(path_for(v), v.nil? ? {describe: :default} : {})
end

#describe_resource(path) ⇒ Object 



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# File 'lib/haveapi/client/communicator.rb', line 72

def describe_resource(path)
  tmp = describe_api(@version)

  path.each do |r|
    tmp = tmp[:resources][r.to_sym]

    return false unless tmp
  end

  tmp
end

#get_action(resources, action, args) ⇒ Object 



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# File 'lib/haveapi/client/communicator.rb', line 88

def get_action(resources, action, args)
  tmp = describe_api(@version)

  resources.each do |r|
    tmp = tmp[:resources][r.to_sym]

    return false unless tmp
  end

  a = tmp[:actions][action]

  unless a # search in aliases
     tmp[:actions].each do |_, v|
      if v[:aliases].include?(action.to_s)
        a = v
        break
      end
    end
  end

  if a
    obj = Action.new(nil, self, action, a, args)
    obj.resource_path = resources
    obj
  else
    false
  end
end

#inspect ⇒ Object 



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# File 'lib/haveapi/client/communicator.rb', line 29

def inspect
  "#<#{self.class.name} @url=#{@url} @version=#{@version} @auth=#{@auth.class.name}>"
end