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91 lines
1.8 KiB
Markdown
91 lines
1.8 KiB
Markdown
[English](grpc-transcoding.md)
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# grpc-transcoding
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HTTP(s) -> APISIX -> gRPC server
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### Proto
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#### 参数
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* `content`: `.proto` 文件的内容
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#### 添加proto
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路径中最后的数字，会被用作 proto 的 id 做唯一标识，比如下面示例的 proto `id` 是 `1` ：
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```shell
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curl http://127.0.0.1:9080/apisix/admin/proto/1 -X PUT -d '
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{
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"content" : "syntax = \"proto3\";
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package helloworld;
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service Greeter {
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rpc SayHello (HelloRequest) returns (HelloReply) {}
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}
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message HelloRequest {
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string name = 1;
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}
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message HelloReply {
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string message = 1;
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}"
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}'
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```
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### 参数
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* `proto_id`: `.proto`内容的id.
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* `service`: grpc服务名.
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* `method`: grpc服务中要调用的方法名.
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### 示例
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#### 使用 grpc-transcode 插件
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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 的属性`service_protocal` 必须设置为 `grpc`
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* 例子所代理的 grpc 服务可参考：[grpc_server_example](https://github.com/nic-chen/grpc_server_example)
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```shell
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curl http://127.0.0.1:9080/apisix/admin/routes/111 -X PUT -d '
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{
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"methods": ["GET"],
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"uri": "/grpctest",
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"service_protocol": "grpc",
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"plugins": {
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"grpc-transcode": {
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"proto_id": "1",
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"service": "helloworld.Greeter",
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"method": "SayHello"
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}
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},
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"upstream": {
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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
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访问上面配置的 route：
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```shell
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$ curl -i http://127.0.0.1:9080/grpctest?name=world
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HTTP/1.1 200 OK
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Date: Fri, 16 Aug 2019 11:55:36 GMT
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Content-Type: application/json
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Transfer-Encoding: chunked
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Connection: keep-alive
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Server: APISIX web server
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Proxy-Connection: keep-alive
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{"message":"Hello world"}
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```
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这表示已成功代理。
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