Class: Tanker::Http::Client

Inherits:
Object
  • Object
show all
Defined in:
lib/tanker/core/http.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(sdk_type, sdk_version, faraday_adapter) ⇒ Client

Returns a new instance of Client.



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# File 'lib/tanker/core/http.rb', line 131

def initialize(sdk_type, sdk_version, faraday_adapter)
  @sdk_type = sdk_type
  @sdk_version = sdk_version
  @conn = Faraday.new do |conn|
    conn.adapter faraday_adapter || Faraday.default_adapter
  end

  # This could be a proc, but for some reason, ffi gives the wrong type
  # for crequest if we don't specify it explicitly here
  @c_send_request = FFI::Function.new(:pointer, [CTanker::CHttpRequest.by_ref, :pointer]) do |crequest, cdata|
    next send_request crequest, cdata
  rescue Exception => e # rubocop:disable Lint/RescueException I do want to rescue all exceptions
    cresponse = CTanker::CHttpResponse.new_error e.message
    CTanker.tanker_http_handle_response(crequest, cresponse)
  end
  @c_cancel_request = proc do |crequest, request_id, cdata|
    cancel_request crequest, request_id, cdata
  rescue Exception => e # rubocop:disable Lint/RescueException I do want to rescue all exceptions
    # This is not recoverable and won't be logged by FFI, let's do our best and log it here just before we crash
    puts "fatal error when canceling HTTP request:\n#{e.full_message}"
    raise
  end

  @tanker_http_options = CTanker::CHttpOptions.new @c_send_request, @c_cancel_request
end

Instance Attribute Details

#tanker_http_options ⇒ Object (readonly)

Returns the value of attribute tanker_http_options.



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# File 'lib/tanker/core/http.rb', line 129

def tanker_http_options
  @tanker_http_options
end

Instance Method Details

#cancel_request(_crequest, prequest_id, _cdata) ⇒ Object 



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# File 'lib/tanker/core/http.rb', line 202

def cancel_request(_crequest, prequest_id, _cdata)
  request_id = prequest_id.to_i
  HttpRequest.cancel(request_id)
end

#process_request(request) ⇒ Object 



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# File 'lib/tanker/core/http.rb', line 157

def process_request(request)
  headers = Faraday::Utils::Headers.new

  request.headers.each do |header|
    # Faraday stores identical headers as a comma separated string
    headers[header.name] = [headers[header.name], header.value].compact
  end

  # overwrite sdk-native headers
  headers['X-Tanker-SdkType'] = @sdk_type
  headers['X-Tanker-SdkVersion'] = @sdk_version

  fresponse = Faraday.run_request(request.method, request.url, request.body, headers)

  request.complete_if_not_canceled do
    # Faraday stores identical headers as a comma separated string
    # So we will only see a single header in sdk-native
    headers = fresponse.headers.map do |name, value|
      HttpHeader.new name, value
    end
    cresponse = CTanker::CHttpResponse.new_ok status_code: fresponse.status,
                                              headers:,
                                              body: fresponse.body
    CTanker.tanker_http_handle_response(request.crequest, cresponse)
  end
rescue Faraday::ConnectionFailed => e
  # This can happen if Faraday is using a proxy, and it rejects the request
  # If we get a 500 from the proxy, we want to differentiate this from a real server error
  cresponse = CTanker::CHttpResponse.new_error "#{e.class}: #{e.message}"
  CTanker.tanker_http_handle_response(request.crequest, cresponse)
rescue Exception => e # rubocop:disable Lint/RescueException I do want to rescue all exceptions
  # NOTE: when debugging, you might want to uncomment this to print a full backtrace
  # puts "HTTP request error:\n#{e.full_message}"
  cresponse = CTanker::CHttpResponse.new_error e.message
  CTanker.tanker_http_handle_response(request.crequest, cresponse)
end

#send_request(crequest, _cdata) ⇒ Object 



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# File 'lib/tanker/core/http.rb', line 194

def send_request(crequest, _cdata)
  request = HttpRequest.new(crequest:)
  ThreadPool.push(proc do
    process_request request
  end)
  FFI::Pointer.new :void, request.id
end