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114 lines
3.4 KiB
Markdown
114 lines
3.4 KiB
Markdown
---
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title: gRPC 代理
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---
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<!--
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#
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# Licensed to the Apache Software Foundation (ASF) under one or more
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# contributor license agreements. See the NOTICE file distributed with
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# this work for additional information regarding copyright ownership.
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# The ASF licenses this file to You under the Apache License, Version 2.0
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# (the "License"); you may not use this file except in compliance with
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# the License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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-->
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通过 APISIX 代理 gRPC 连接,并使用 APISIX 的大部分特性管理你的 gRPC 服务。
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## 参数
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* `scheme`: Route 对应的 Upstream 的 `scheme` 必须设置为 `grpc` 或者 `grpcs`
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* `uri`: 格式为 /service/method 如:/helloworld.Greeter/SayHello
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## 示例
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### 创建代理 gRPC 的 Route
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在指定 Route 中,代理 gRPC 服务接口:
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* 注意:这个 Route 对应的 Upstream 的 `scheme` 必须设置为 `grpc` 或者 `grpcs`。
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* 注意: APISIX 使用 TLS 加密的 HTTP/2 暴露 gRPC 服务, 所以需要先 [配置 SSL 证书](certificate.md);
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* 注意: APISIX 也支持通过纯文本的 HTTP/2 暴露 gRPC 服务,这不需要依赖 SSL,通常用于内网环境代理gRPC服务
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* 下面例子所代理的 gRPC 服务可供参考:[grpc_server_example](https://github.com/api7/grpc_server_example)。
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```shell
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curl http://127.0.0.1:9080/apisix/admin/routes/1 -H 'X-API-KEY: edd1c9f034335f136f87ad84b625c8f1' -X PUT -d '
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{
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"methods": ["POST", "GET"],
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"uri": "/helloworld.Greeter/SayHello",
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"upstream": {
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"scheme": "grpc",
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"type": "roundrobin",
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"nodes": {
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"127.0.0.1:50051": 1
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}
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}
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}'
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```
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### 测试 TLS 加密的 HTTP/2
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访问上面配置的 Route:
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```shell
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grpcurl -insecure -import-path /pathtoprotos -proto helloworld.proto \
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-d '{"name":"apisix"}' 127.0.0.1:9443 helloworld.Greeter.SayHello
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{
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"message": "Hello apisix"
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}
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```
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这表示已成功代理。
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### 测试纯文本的 HTTP/2
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默认情况下,APISIX只在 `9443` 端口支持 TLS 加密的 HTTP/2。你也可以支持纯本文的 HTTP/2,只需要修改 `conf/config.yaml` 文件中的 `node_listen` 配置即可。
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```yaml
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apisix:
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node_listen:
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- port: 9080
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enable_http2: false
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- port: 9081
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enable_http2: true
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```
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访问上面配置的 Route:
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```shell
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grpcurl -plaintext -import-path /pathtoprotos -proto helloworld.proto \
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-d '{"name":"apisix"}' 127.0.0.1:9081 helloworld.Greeter.SayHello
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{
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"message": "Hello apisix"
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}
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```
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这表示已成功代理。
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### gRPCS
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如果你的 gRPC 服务使用了自己的 TLS 加密,即所谓的 `gPRCS` (gRPC + TLS),那么需要修改 scheme 为 `grpcs`。继续上面的例子,50052 端口上跑的是 gPRCS 的服务,这时候应该这么配置:
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```shell
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curl http://127.0.0.1:9080/apisix/admin/routes/1 -H 'X-API-KEY: edd1c9f034335f136f87ad84b625c8f1' -X PUT -d '
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{
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"methods": ["POST", "GET"],
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"uri": "/helloworld.Greeter/SayHello",
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"upstream": {
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"scheme": "grpcs",
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"type": "roundrobin",
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"nodes": {
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"127.0.0.1:50052": 1
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}
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}
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}'
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```
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