forked from lazada/grpc-ui
/
call.go
62 lines (52 loc) · 1.34 KB
/
call.go
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package proto
import (
"context"
"fmt"
"github.com/komly/grpc-ui/reflection"
"google.golang.org/grpc"
)
func Invoke(ctx context.Context, addr string, packageName, serviceName, methodName string, data []FieldValue) (interface{}, error) {
info, err := reflection.GetInfo(ctx, addr)
if err != nil {
return nil, err
}
inType, outType, err := findInType(info, packageName, serviceName, methodName)
if err != nil {
return nil, err
}
in := &Message{
TypeInfo: info.Types,
TypeName: inType,
Data: data,
}
out := &Message{
TypeInfo: info.Types,
TypeName: outType,
}
conn, err := grpc.DialContext(ctx, addr, grpc.WithInsecure())
if err != nil {
return nil, err
}
var methodFqdn string
if packageName == "" {
methodFqdn = fmt.Sprintf("/%s/%s", serviceName, methodName)
} else {
methodFqdn = fmt.Sprintf("/%s.%s/%s", packageName, serviceName, methodName)
}
if err := grpc.Invoke(ctx, methodFqdn, in, out, conn); err != nil {
return nil, err
}
return out.PB, nil
}
func findInType(info *reflection.InfoResp, packageName, serviceName, methodName string) (string, string, error) {
for _, s := range info.Packages[packageName] {
if s.Name == serviceName {
for _, m := range s.Methods {
if m.Name == methodName {
return m.In, m.Out, nil
}
}
}
}
return "", "", fmt.Errorf("no such method: %v", methodName)
}