泛化调用接入 dynamicgo 指南

DefaultJSONDynamicgoConvOpts = conv.Options{
   WriteRequireField: true,
   WriteDefaultField: true,
}

DefaultHTTPDynamicgoConvOpts = conv.Options{
   EnableHttpMapping:     true,
   EnableValueMapping:    true,
   WriteRequireField:     true,
   WriteDefaultField:     true,
   OmitHttpMappingErrors: true,
   NoBase64Binary:        true,
   UseKitexHttpEncoding:  true,
}

package main

import (
    "github.com/cloudwego/Kitex/pkg/generic"
     bgeneric "github.com/cloudwego/Kitex/client/genericclient"
)

func main() {
    // Local file idl parsing
    // YOUR_IDL_PATH: thrift file path ex.) ./idl/example.thrift
    // includeDirs: Specify the include paths, by default the relative path of the current file is used to find the include
    p, err := generic.NewThriftFileProviderWithDynamicGo("./YOUR_IDL_PATH")
    if err != nil {
        panic(err)
    }
    // Constructing generic call of JSON request and response types
    g, err := generic.JSONThriftGeneric(p)
    // Set generic option for dynamicgo if needed
    //  var dopts []generic.Option
    //  dopts = append(dopts, generic.WithCustomDynamicgoConvOpts(conv.Options{your conv options}))
    //  g, err := generic.JSONThriftGeneric(p, dopts...)
    if err != nil {
        panic(err)
    }
    cli, err := bgeneric.NewClient("psm", g, opts...)
    if err != nil {
        panic(err)
    }
    // 'ExampleMethod' method name must be included in the idl definition
    resp, err := cli.GenericCall(ctx, "ExampleMethod", "{\"Msg\": \"hello\"}")
    // resp is a JSON string
}

package main

import (
    "github.com/cloudwego/Kitex/pkg/generic"
    bgeneric "github.com/cloudwego/Kitex/server/genericserver"
)

func main() {
    // Local file idl parsing
    // YOUR_IDL_PATH: thrift file path ex.) ./idl/example.thrift
    p, err := generic.NewThriftFileProviderWithDynamicGo("./YOUR_IDL_PATH")
    if err != nil {
        panic(err)
    }
    // Constructing generic call of JSON request and response types
    g, err := generic.JSONThriftGeneric(p)
    // Set generic option for dynamicgo if needed
    //  var dopts []generic.Option
    //  dopts = append(dopts, generic.WithCustomDynamicgoConvOpts(conv.Options{your conv options}))
    //  g, err := generic.JSONThriftGeneric(p, dopts...)
    if err != nil {
        panic(err)
    }
    svc := bgeneric.NewServer(new(GenericServiceImpl), g, opts...)
    if err != nil {
        panic(err)
    }
    err := svr.Run()
    if err != nil {
        panic(err)
    }
    // resp is a JSON string
}

type GenericServiceImpl struct {
}

func (g *GenericServiceImpl) GenericCall(ctx context.Context, method string, request interface{}) (response interface{}, err error) {
        // use jsoniter or other json parse sdk to assert request 
        m := request.(string)
        fmt.Printf("Recv: %v\n", m)
        return  "{\"Msg\": \"world\"}", nil
}

package main

import (
    bgeneric "github.com/cloudwego/Kitex/client/genericclient"
    "github.com/cloudwego/Kitex/pkg/generic"
)

func main() {
    // Local file idl parsing
    // YOUR_IDL_PATH: thrift file path ex.) ./idl/example.thrift
    // includeDirs: Specify the include paths, by default the relative path of the current file is used to find the include
    p, err := generic.NewThriftFileProviderWithDynamicGo("./YOUR_IDL_PATH")
    if err != nil {
        panic(err)
    }
    // Set generic option for dynamicgo
    var dopts []generic.Option
    dopts = append(dopts, generic.UseRawBodyForHTTPResp(true))
    // Constructing generic call of http
    g, err := generic.HTTPThriftGeneric(p, dopts...)
    if err != nil {
        panic(err)
    }
    cli, err := bgeneric.NewClient("psm", g, opts...)
    if err != nil {
        panic(err)
    }
    
    // Construct the request, or get it from ginex
    body := map[string]interface{}{
                "text": "text",
                "some": map[string]interface{}{
                        "id":   1,
                        "text": "text",
                },
                "req_items_map": map[string]interface{}{
                        "1": map[string]interface{}{
                                "id":   1,
                                "text": "text",
                        },
                },
        }
    data, err := json.Marshal(body)
    if err != nil {
        panic(err)
    }
    url := "http://example.com/life/client/1/1?v_int64=1&req_items=item1,item2,itme3&cids=1,2,3&vids=1,2,3"
    req, err := http.NewRequest(http.MethodGet, url, bytes.NewBuffer(data))
    if err != nil {
        panic(err)
    }
    req.Header.Set("token", "1")
    customReq, err := generic.FromHTTPRequest(req) // Considering that the business may use third-party http request, you can construct your own conversion function
    // customReq *generic.HttpRequest
    // Since the method for http generic is obtained from the http request via the bam rule, just fill in the blanks
    
    resp, err := cli.GenericCall(ctx, "", customReq)
    realResp := resp.(*generic.HttpResponse)
    realResp.Write(w) // Write back to ResponseWriter for http gateway
    
     // The body will be stored in RawBody of HTTPResponse as []byte type.
    // Without using dynamicgo, the body will be stored in Body of HTTPResponse as map[string]interface{} type.
    node, err := sonic.Get(gr.RawBody, "msg")
    val, err := node.String() // get the value of "msg"
    println(val == base64.StdEncoding.EncodeToString([]byte(mockMyMsg))) // true
    _, ok := gr.Body["msg"]
    println(ok) // false
}