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