Class: Antbird::Client

Inherits:
Object
  • Object
show all
Defined in:
lib/antbird/client.rb,
lib/antbird/client/errors.rb

Defined Under Namespace

Classes: ApiError, Error, RequestError, ServerError

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(scope: {}, url: "http://localhost:9200", version: nil, read_timeout: 5, open_timeout: 2, write_timeout: nil, adapter: ::Faraday.default_adapter, &block) ⇒ Client

Returns a new instance of Client.



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# File 'lib/antbird/client.rb', line 6

def initialize(
  scope: {},
  url: "http://localhost:9200",
  version: nil,
  read_timeout: 5,
  open_timeout: 2,
  write_timeout: nil,
  adapter: ::Faraday.default_adapter,
  &block)

  @read_timeout  = read_timeout
  @open_timeout  = open_timeout
  @write_timeout = write_timeout
  @adapter       = adapter
  @block         = block
  @url           = url

  @scope        = scope.transform_keys(&:to_sym)

  @version = version

  @api_specs = {}
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(name, *args, &block) ⇒ Object (private) 



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# File 'lib/antbird/client.rb', line 347

def method_missing(name, *args, &block)
  return super if api_specs_loaded?

  ensure_api_spec_loaded

  return super unless respond_to?(name)
  __send__(name, *args, &block)
end

Instance Attribute Details

#adapter ⇒ Object (readonly)

Returns the value of attribute adapter.



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# File 'lib/antbird/client.rb', line 30

def adapter
  @adapter
end

#api_specs ⇒ Object (readonly)

Returns the value of attribute api_specs.



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# File 'lib/antbird/client.rb', line 31

def api_specs
  @api_specs
end

#last_request ⇒ Object (readonly)

Returns the value of attribute last_request.



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# File 'lib/antbird/client.rb', line 31

def last_request
  @last_request
end

#open_timeout ⇒ Object (readonly)

Returns the value of attribute open_timeout.



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# File 'lib/antbird/client.rb', line 30

def open_timeout
  @open_timeout
end

#read_timeout ⇒ Object (readonly)

Returns the value of attribute read_timeout.



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# File 'lib/antbird/client.rb', line 30

def read_timeout
  @read_timeout
end

#scope ⇒ Object (readonly)

Returns the value of attribute scope.



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# File 'lib/antbird/client.rb', line 29

def scope
  @scope
end

#url ⇒ Object (readonly)

Returns the value of attribute url.



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# File 'lib/antbird/client.rb', line 29

def url
  @url
end

#write_timeout ⇒ Object (readonly)

Returns the value of attribute write_timeout.



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# File 'lib/antbird/client.rb', line 30

def write_timeout
  @write_timeout
end

Instance Method Details

#connection ⇒ Object 



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# File 'lib/antbird/client.rb', line 184

def connection
  @connection ||= Faraday.new(url) do |conn|
    @block&.call(conn)

    conn.request :json
    conn.response :json, content_type: /\bjson$/

    conn.options[:timeout]       = read_timeout
    conn.options[:open_timeout]  = open_timeout
    conn.options[:write_timeout] = write_timeout if write_timeout

    conn.adapter adapter
  end
end

#extract_body(params) ⇒ Object 



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# File 'lib/antbird/client.rb', line 161

def extract_body(params)
  body = params.delete :body
  return if body.nil?

  body =
    case body
    when String
      body
    when Array
      if body.all? { |b| b.is_a?(Hash) }
        body.map { |b| JSON.dump(b) }.join("\n") + "\n"
      else
        body << nil unless body.last.nil?
        body.join "\n"
      end
    else
      JSON.dump(body)
    end

  # Prevent excon from changing the encoding (see https://github.com/github/elastomer-client/issues/138)
  body.freeze
end

#extract_method(params) ⇒ Object 



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# File 'lib/antbird/client.rb', line 147

def extract_method(params)
  params.delete(:method)&.to_sym
end

#extract_scopes(params, path_params = [:index, :type, :id]) ⇒ Object 



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# File 'lib/antbird/client.rb', line 151

def extract_scopes(params, path_params = [:index, :type, :id])
  scopes = {}
  path_params.each do |s|
    scope = params.delete(s)
    next unless scope
    scopes[s] = scope
  end
  scopes
end

#request(api_name, api_spec, params, path_params = [:index, :type, :id]) ⇒ Object 



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# File 'lib/antbird/client.rb', line 46

def request(api_name, api_spec, params, path_params = [:index, :type, :id])
  validate_params(api_spec, params, path_params)

  body   = extract_body(params)
  scopes = extract_scopes(params, path_params)
  forced_method = extract_method(params)

  # Greedy match
  api_path = nil
  api_path_template = nil
  path_methods = nil
  sort_url_paths(api_spec['url']['paths']).each do |path|
    if path.is_a?(Hash)
      path_methods = path['methods']
      path = path['path']
    end

    embeded = path.gsub(/{([a-z_\-}]+)}/) do |match|
      scopes[$1.to_sym] || @scope[$1.to_sym] || match
    end

    unless embeded.include?('{')
      api_path_template = path
      api_path = embeded
      break
    end
  end

  unless api_path
    raise "API path not found: paths: #{api_spec['url']['paths']}, scope: #{@scope}"
  end

  methods = (path_methods || api_spec['methods']).map { |m| m.downcase.to_sym }
  method =
    if forced_method
      forced_method
    elsif methods.include?(:put)
      :put
    elsif methods.include?(:post)
      :post
    else
      methods.first
    end

  timeout_options = extract_timeout_options(params)
  params.reject! { |_, v| v.nil? }

  @last_request = {
    method: method,
    forced_method: forced_method,
    api_path: api_path,
    api_path_template: api_path_template,
    params: params
  }

  response =
    case method
    when :head
      connection.head(api_path) do |req|
        req.params = params unless params.empty?
        apply_timeouts(req, timeout_options)
      end
    when :get
      connection.get(api_path) do |req|
        req.params = params unless params.empty?
        req.body = body if body
        apply_timeouts(req, timeout_options)
      end
    when :put
      connection.put(api_path, body) do |req|
        req.params = params unless params.empty?
        apply_timeouts(req, timeout_options)
      end
    when :post
      connection.post(api_path, body) do |req|
        req.params = params unless params.empty?
        apply_timeouts(req, timeout_options)
      end
    when :delete
      connection.delete(api_path) do |req|
        req.params = params unless params.empty?
        req.body = body if body
        apply_timeouts(req, timeout_options)
      end
    else
      raise ArgumentError, "Unknown HTTP request method: #{method.inspect}"
    end

  if method == :head
    case response.status
    when 200
      return true
    when 404
      return false
    end
  end

  handle_errors!(response)
  response.body
end

#scoped(new_scope = {}) ⇒ Object 



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# File 'lib/antbird/client.rb', line 33

def scoped(new_scope = {})
  Client.new(
    scope: new_scope,
    url: url,
    version: version,
    read_timeout: read_timeout,
    open_timeout: open_timeout,
    write_timeout: write_timeout,
    adapter: adapter,
    &@block
  )
end

#version ⇒ Object 



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# File 'lib/antbird/client.rb', line 199

def version
  return @version if @version

  ensure_version
  @version
end