107 lines
2.0 KiB
Go
107 lines
2.0 KiB
Go
package traffic
|
|
|
|
import (
|
|
"context"
|
|
"io"
|
|
|
|
"github.com/go-gost/core/limiter/traffic"
|
|
"github.com/go-gost/core/logger"
|
|
"github.com/go-gost/plugin/limiter/traffic/proto"
|
|
"github.com/go-gost/x/internal/plugin"
|
|
xtraffic "github.com/go-gost/x/limiter/traffic"
|
|
"google.golang.org/grpc"
|
|
)
|
|
|
|
type grpcPlugin struct {
|
|
conn grpc.ClientConnInterface
|
|
client proto.LimiterClient
|
|
log logger.Logger
|
|
}
|
|
|
|
// NewGRPCPlugin creates a traffic limiter plugin based on gRPC.
|
|
func NewGRPCPlugin(name string, addr string, opts ...plugin.Option) traffic.TrafficLimiter {
|
|
var options plugin.Options
|
|
for _, opt := range opts {
|
|
opt(&options)
|
|
}
|
|
|
|
log := logger.Default().WithFields(map[string]any{
|
|
"kind": "limiter",
|
|
"limiter": name,
|
|
})
|
|
conn, err := plugin.NewGRPCConn(addr, &options)
|
|
if err != nil {
|
|
log.Error(err)
|
|
}
|
|
|
|
p := &grpcPlugin{
|
|
conn: conn,
|
|
log: log,
|
|
}
|
|
if conn != nil {
|
|
p.client = proto.NewLimiterClient(conn)
|
|
}
|
|
return p
|
|
}
|
|
|
|
func (p *grpcPlugin) In(ctx context.Context, key string, opts ...traffic.Option) traffic.Limiter {
|
|
if p.client == nil {
|
|
return nil
|
|
}
|
|
|
|
var options traffic.Options
|
|
for _, opt := range opts {
|
|
opt(&options)
|
|
}
|
|
|
|
r, err := p.client.Limit(ctx,
|
|
&proto.LimitRequest{
|
|
Network: options.Network,
|
|
Addr: options.Addr,
|
|
Client: options.Client,
|
|
Src: options.Src,
|
|
})
|
|
if err != nil {
|
|
p.log.Error(err)
|
|
return nil
|
|
}
|
|
|
|
return xtraffic.NewLimiter(int(r.In))
|
|
}
|
|
|
|
func (p *grpcPlugin) Out(ctx context.Context, key string, opts ...traffic.Option) traffic.Limiter {
|
|
if p.client == nil {
|
|
return nil
|
|
}
|
|
|
|
var options traffic.Options
|
|
for _, opt := range opts {
|
|
opt(&options)
|
|
}
|
|
|
|
r, err := p.client.Limit(ctx,
|
|
&proto.LimitRequest{
|
|
Network: options.Network,
|
|
Addr: options.Addr,
|
|
Client: options.Client,
|
|
Src: options.Src,
|
|
})
|
|
if err != nil {
|
|
p.log.Error(err)
|
|
return nil
|
|
}
|
|
|
|
return xtraffic.NewLimiter(int(r.Out))
|
|
}
|
|
|
|
func (p *grpcPlugin) Close() error {
|
|
if p.conn == nil {
|
|
return nil
|
|
}
|
|
|
|
if closer, ok := p.conn.(io.Closer); ok {
|
|
return closer.Close()
|
|
}
|
|
return nil
|
|
}
|