[#1184] node: Add audit middleware for grpc services

Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>

pkg/services/apemanager/audit.go

@@ -0,0 +1,75 @@
+package apemanager
+
+import (
+	"context"
+	"sync/atomic"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/apemanager"
+	ape_grpc "git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/apemanager/grpc"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/internal/audit"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/util/logger"
+)
+
+var _ Server = (*auditService)(nil)
+
+type auditService struct {
+	next    Server
+	log     *logger.Logger
+	enabled *atomic.Bool
+}
+
+func NewAuditService(next Server, log *logger.Logger, enabled *atomic.Bool) Server {
+	return &auditService{
+		next:    next,
+		log:     log,
+		enabled: enabled,
+	}
+}
+
+// AddChain implements Server.
+func (a *auditService) AddChain(ctx context.Context, req *apemanager.AddChainRequest) (*apemanager.AddChainResponse, error) {
+	res, err := a.next.AddChain(ctx, req)
+	if !a.enabled.Load() {
+		return res, err
+	}
+
+	audit.LogRequest(a.log, ape_grpc.APEManagerService_AddChain_FullMethodName, req,
+		audit.TargetFromChainID(req.GetBody().GetTarget().GetTargetType().String(),
+			req.GetBody().GetTarget().GetName(),
+			res.GetBody().GetChainID()),
+		err == nil)
+
+	return res, err
+}
+
+// ListChains implements Server.
+func (a *auditService) ListChains(ctx context.Context, req *apemanager.ListChainsRequest) (*apemanager.ListChainsResponse, error) {
+	res, err := a.next.ListChains(ctx, req)
+	if !a.enabled.Load() {
+		return res, err
+	}
+
+	audit.LogRequest(a.log, ape_grpc.APEManagerService_ListChains_FullMethodName, req,
+		audit.TargetFromChainID(req.GetBody().GetTarget().GetTargetType().String(),
+			req.GetBody().GetTarget().GetName(),
+			nil),
+		err == nil)
+
+	return res, err
+}
+
+// RemoveChain implements Server.
+func (a *auditService) RemoveChain(ctx context.Context, req *apemanager.RemoveChainRequest) (*apemanager.RemoveChainResponse, error) {
+	res, err := a.next.RemoveChain(ctx, req)
+	if !a.enabled.Load() {
+		return res, err
+	}
+
+	audit.LogRequest(a.log, ape_grpc.APEManagerService_RemoveChain_FullMethodName, req,
+		audit.TargetFromChainID(req.GetBody().GetTarget().GetTargetType().String(),
+			req.GetBody().GetTarget().GetName(),
+			req.GetBody().GetChainID()),
+		err == nil)
+
+	return res, err
+}