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snapshot of https://github.com/sqlc-dev/sqlc.git (main, 2026-09-16; blobs > 131072B omitted)
2026-09-16 02:17:34 +05:00

106 lines
2.4 KiB
Go

package process
import (
"bytes"
"context"
"errors"
"fmt"
"os"
"os/exec"
"google.golang.org/grpc"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/status"
"google.golang.org/protobuf/encoding/protojson"
"google.golang.org/protobuf/proto"
"google.golang.org/protobuf/reflect/protoreflect"
"github.com/sqlc-dev/sqlc/internal/info"
)
type Runner struct {
Cmd string
Format string
Env []string
}
func (r *Runner) Invoke(ctx context.Context, method string, args any, reply any, opts ...grpc.CallOption) error {
req, ok := args.(protoreflect.ProtoMessage)
if !ok {
return fmt.Errorf("args isn't a protoreflect.ProtoMessage")
}
var stdin []byte
var err error
switch r.Format {
case "json":
m := &protojson.MarshalOptions{
EmitUnpopulated: true,
Indent: "",
UseProtoNames: true,
}
stdin, err = m.Marshal(req)
if err != nil {
return fmt.Errorf("failed to encode codegen request: %w", err)
}
case "", "protobuf":
stdin, err = proto.Marshal(req)
if err != nil {
return fmt.Errorf("failed to encode codegen request: %w", err)
}
default:
return fmt.Errorf("unknown plugin format: %s", r.Format)
}
// Check if the output plugin exists
path, err := exec.LookPath(r.Cmd)
if err != nil {
return fmt.Errorf("process: %s not found", r.Cmd)
}
cmd := exec.CommandContext(ctx, path, method)
cmd.Stdin = bytes.NewReader(stdin)
cmd.Env = []string{
fmt.Sprintf("SQLC_VERSION=%s", info.Version),
}
for _, key := range r.Env {
if key == "SQLC_AUTH_TOKEN" {
continue
}
cmd.Env = append(cmd.Env, fmt.Sprintf("%s=%s", key, os.Getenv(key)))
}
out, err := cmd.Output()
if err != nil {
stderr := err.Error()
var exit *exec.ExitError
if errors.As(err, &exit) {
stderr = string(exit.Stderr)
}
return fmt.Errorf("process: error running command %s", stderr)
}
resp, ok := reply.(protoreflect.ProtoMessage)
if !ok {
return fmt.Errorf("reply isn't a protoreflect.ProtoMessage")
}
switch r.Format {
case "json":
if err := protojson.Unmarshal(out, resp); err != nil {
return fmt.Errorf("process: failed to read codegen resp: %w", err)
}
default:
if err := proto.Unmarshal(out, resp); err != nil {
return fmt.Errorf("process: failed to read codegen resp: %w", err)
}
}
return nil
}
func (r *Runner) NewStream(ctx context.Context, desc *grpc.StreamDesc, method string, opts ...grpc.CallOption) (grpc.ClientStream, error) {
return nil, status.Error(codes.Unimplemented, "")
}