我创建了一个简单的gRPC API服务,并使用GKE-ESP端点将其发布。有用。现在,我想发布具有ServerReflection
功能的服务。反射已添加到gRPC服务器中,当某些grpc客户端(例如grpcurl
)直接向服务器发送list
请求时,服务器将返回正确的答案以及可访问的gRPC服务列表:>
$ grpcurl --plaintext localhost:8000 list
grservices.diagnostic
当同一请求发送到负载均衡器的公共IP时,答案为Failed to list services: rpc error: code = NotFound desc = Method does not exist.
esp日志:
"POST /grpc.reflection.v1alpha.ServerReflection/ServerReflectionInfo HTTP/2.0" 404 0 "-" "grpc-go/1.14.0-dev"
端点日志:
Endpoints management skipped for an unrecognized HTTP call: POST /grpc.reflection.v1alpha.ServerReflection/ServerReflectionInfo
对我来说,原因似乎是因为endpoints
不了解grpc.reflection.v1alpha.ServerReflection
服务,并且不允许将请求路由到gRPC容器。我查看了所有可以谷歌搜索的示例,没有发现启用了api-config.yaml
和没有ServerReflection
的gRPC在ServerReflection
个文件之间没有任何更改。
不幸的是,我尝试更改api_config.yaml
并将其应用于部署没有成功,因为我应该为{{grpc.reflection.v1alpha.ServerReflection}}使用描述符{{.pb}}文件。 / p>
所以我的问题是如何配置端点和esp以提供reflection
?
非常感谢任何想法和建议。
api_config.yaml:
type: google.api.Service
config_version: 3
#
# Name of the service configuration.
#
name: diagnostic.endpoints.[id-project].cloud.goog
#
# API title to appear in the user interface (Google Cloud Console).
#
title: diagnostic gRPC API
apis:
- name: grservices.diagnostic
# -name: grpc.reflection.v1alpha.ServerReflection
#
# API usage restrictions.
#
#usage:
# rules:
# # Diagnostic methods can be called without an API Key.
# - selector: grservices.diagnostic.GetDateTime
# allow_unregistered_calls: true
#
# - selector: grservices.diagnostic.GetTimeZones
# allow_unregistered_calls: true
#
## - selector: grpc.reflection.v1alpha.ServerReflection.ServerReflectionInfo
## allow_unregistered_calls: true
usage:
rules:
# Allow unregistered calls for all methods.
- selector: "*"
allow_unregistered_calls: true
答案 0 :(得分:0)
浏览器希望HTTP响应包含有效的CORS标头。但是后端是gRPC,它无法处理CORS。
您可以找到自己的解决方案Here
答案 1 :(得分:0)
解决方案非常简单。我刚刚下载了reflection.proto
,并使用.pb
和我自己的服务reflection.proto
文件编译了新的proto
文件:
wget https://raw.githubusercontent.com/grpc/grpc/master/src/proto/grpc/reflection/v1alpha/reflection.proto
python -m grpc.tools.protoc --include_imports --include_source_info --proto_path=. --proto_path="../googleapis" --python_out=. --grpc_python_out=. --descriptor_set_out=api_descriptor.pb reflection.proto diagnostic.proto
# delete _pb2.py files of reflection. The files are already presented in virtenv as the part of grpcio-reflection package
rm reflection_pb2.py
rm reflection_pb2_gprc.py
# upload the new config to endpoints
gcloud endpoints services deploy api_descriptor.pb api_config.yaml
测试:
$ grpcurl -insecure ${EXT_IP}:443 list
grservices.diagnostic
$ grpcurl -insecure ${EXT_IP}:443 list grservices.diagnostic
GetDateTime
GetTimeZones
grpcurl -insecure ${EXT_IP}:443 grservices.diagnostic.GetDateTime
{
"datetime": "2018-07-23 17:21:16"
}
$ grpcurl -insecure ${EXT_IP}:443 grservices.diagnostic/GetdateTime
$ grpcurl -d '{"time_zone": "Israel"}' -insecure ${EXT_IP}:443 grservices.diagnostic.GetDateTime
{
"datetime": "2018-07-23 20:25:41Z+0300"
}
api_config.yaml
文件的更改部分:
apis:
- name: grservices.diagnostic
- name: grpc.reflection.v1alpha.ServerReflection