复制项目

pkg/common/startrpc/ratelimit.go

@@ -0,0 +1,70 @@
+package startrpc
+
+import (
+	"context"
+	"time"
+
+	"github.com/openimsdk/tools/log"
+	"github.com/openimsdk/tools/stability/ratelimit"
+	"github.com/openimsdk/tools/stability/ratelimit/bbr"
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/codes"
+	"google.golang.org/grpc/status"
+)
+
+type RateLimiter struct {
+	Enable       bool
+	Window       time.Duration
+	Bucket       int
+	CPUThreshold int64
+}
+
+func NewRateLimiter(config *RateLimiter) ratelimit.Limiter {
+	if !config.Enable {
+		return nil
+	}
+
+	return bbr.NewBBRLimiter(
+		bbr.WithWindow(config.Window),
+		bbr.WithBucket(config.Bucket),
+		bbr.WithCPUThreshold(config.CPUThreshold),
+	)
+}
+
+func UnaryRateLimitInterceptor(limiter ratelimit.Limiter) grpc.ServerOption {
+	if limiter == nil {
+		return grpc.ChainUnaryInterceptor(func(ctx context.Context, req any, info *grpc.UnaryServerInfo, handler grpc.UnaryHandler) (resp any, err error) {
+			return handler(ctx, req)
+		})
+	}
+
+	return grpc.ChainUnaryInterceptor(func(ctx context.Context, req any, info *grpc.UnaryServerInfo, handler grpc.UnaryHandler) (resp any, err error) {
+		done, err := limiter.Allow()
+		if err != nil {
+			log.ZWarn(ctx, "rpc rate limited", err, "method", info.FullMethod)
+			return nil, status.Errorf(codes.ResourceExhausted, "rpc request rate limit exceeded: %v, please try again later", err)
+		}
+
+		defer done(ratelimit.DoneInfo{})
+		return handler(ctx, req)
+	})
+}
+
+func StreamRateLimitInterceptor(limiter ratelimit.Limiter) grpc.ServerOption {
+	if limiter == nil {
+		return grpc.ChainStreamInterceptor(func(srv any, ss grpc.ServerStream, info *grpc.StreamServerInfo, handler grpc.StreamHandler) error {
+			return handler(srv, ss)
+		})
+	}
+
+	return grpc.ChainStreamInterceptor(func(srv any, ss grpc.ServerStream, info *grpc.StreamServerInfo, handler grpc.StreamHandler) error {
+		done, err := limiter.Allow()
+		if err != nil {
+			log.ZWarn(ss.Context(), "rpc rate limited", err, "method", info.FullMethod)
+			return status.Errorf(codes.ResourceExhausted, "rpc request rate limit exceeded: %v, please try again later", err)
+		}
+		defer done(ratelimit.DoneInfo{})
+
+		return handler(srv, ss)
+	})
+}