Google Cloud Endpoints V2 多类 API 错误 App Engine Standard答案

【问题标题】：Google Cloud Endpoints V2 multi-class API error App Engine StandardGoogle Cloud Endpoints V2 多类 API 错误 App Engine Standard
【发布时间】：2017-01-21 04:29:56
【问题描述】：

错误： ApiConfigurationError：尝试使用不兼容的多个类实现服务回显，版本 v2。有关如何实现多类 API 的示例，请参阅 api() 的文档字符串。

代码：

import logging
import endpoints
from protorpc import message_types
from protorpc import messages
from protorpc import remote

class EchoRequest(messages.Message):
   content = messages.StringField(1)

class EchoResponse(messages.Message):
    content = messages.StringField(1)

ECHO_RESOURCE = endpoints.ResourceContainer(
    EchoRequest, n=messages.IntegerField(2, default=1))

@endpoints.api(name='echo', version='v1',description='description')
class EchoApi(remote.Service):

  @endpoints.method(
    # This method takes a ResourceContainer defined above.
    ECHO_RESOURCE,
    # This method returns an Echo message.
    EchoResponse,
    path='echo',
    http_method='POST',
    name='echo')

  def echo(self, request):
    logging.info("echo1"+ str(request.content))
    output_content = ' '.join([request.content] * request.n)
    return EchoResponse(content=output_content)

@endpoints.api(name='echo', version='v2', description='description2')
class EchoApi2(remote.Service):

  @endpoints.method(
    # This method takes a ResourceContainer defined above.
    ECHO_RESOURCE,
    # This method returns an Echo message.
    EchoResponse,
    path='echo',
    http_method='POST',
    name='echo')

  def echo(self, request):
    logging.info("echo2" + str(request.content))
    output_content = ' '.join([request.content] * request.n)
    return EchoResponse(content=output_content)

api = endpoints.api_server([EchoApi, EchoApi2])

如果只有：版本='v1' (EchoApi)

ERROR if: version='v2' is added (EchoApi2)

错误代码：ApiConfigurationError：尝试使用不兼容的多个类实现服务回显，版本 v2。有关如何实现多类 API 的示例，请参阅 api() 的文档字符串。

谢谢。

【问题讨论】：

标签： python google-app-engine google-cloud-endpoints

【解决方案1】：

这是创建使用多个类实现的 API 的正确格式：

import logging
import endpoints
from protorpc import message_types
from protorpc import messages
from protorpc import remote

class EchoRequest(messages.Message):
   content = messages.StringField(1)

class EchoResponse(messages.Message):
    content = messages.StringField(1)

ECHO_RESOURCE = endpoints.ResourceContainer(
    EchoRequest, n=messages.IntegerField(2, default=1))

echo_collection = endpoints.api(name='echo', version='v1', description='description')

@echo_collection.api_class(resource_name='echo1')
class EchoApi1(remote.Service):

  @endpoints.method(
    # This method takes a ResourceContainer defined above.
    ECHO_RESOURCE,
    # This method returns an Echo message.
    EchoResponse,
    path='echo',
    http_method='POST',
    name='echo')

  def echo(self, request):
    logging.info("echo1"+ str(request.content))
    output_content = ' '.join([request.content] * request.n)
    return EchoResponse(content=output_content)

@echo_collection.api_class(resource_name='echo2')
class EchoApi2(remote.Service):

  @endpoints.method(
    # This method takes a ResourceContainer defined above.
    ECHO_RESOURCE,
    # This method returns an Echo message.
    EchoResponse,
    path='echo',
    http_method='POST',
    name='echo')

  def echo(self, request):
    logging.info("echo2" + str(request.content))
    output_content = ' '.join([request.content] * request.n)
    return EchoResponse(content=output_content)

api = endpoints.api_server([echo_collection])

文档解释它：https://cloud.google.com/endpoints/docs/frameworks/python/create_api#creating_an_api_implemented_with_multiple_classes

【讨论】：