OP#792 initial commit after fork

cmd/bootstrap-messages.go

@@ -0,0 +1,67 @@
+// Copyright (c) 2015-2023 MinIO, Inc.
+//
+// This file is part of MinIO Object Storage stack
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+package cmd
+
+import (
+	"context"
+	"sync"
+
+	"github.com/minio/madmin-go/v3"
+	"github.com/minio/minio/internal/pubsub"
+)
+
+const bootstrapTraceLimit = 4 << 10
+
+type bootstrapTracer struct {
+	mu   sync.RWMutex
+	info []madmin.TraceInfo
+}
+
+var globalBootstrapTracer = &bootstrapTracer{}
+
+func (bs *bootstrapTracer) Record(info madmin.TraceInfo) {
+	bs.mu.Lock()
+	defer bs.mu.Unlock()
+
+	if len(bs.info) > bootstrapTraceLimit {
+		return
+	}
+	bs.info = append(bs.info, info)
+}
+
+func (bs *bootstrapTracer) Events() []madmin.TraceInfo {
+	traceInfo := make([]madmin.TraceInfo, 0, bootstrapTraceLimit)
+
+	bs.mu.RLock()
+	traceInfo = append(traceInfo, bs.info...)
+	bs.mu.RUnlock()
+
+	return traceInfo
+}
+
+func (bs *bootstrapTracer) Publish(ctx context.Context, trace *pubsub.PubSub[madmin.TraceInfo, madmin.TraceType]) {
+	for _, bsEvent := range bs.Events() {
+		if bsEvent.Message != "" {
+			select {
+			case <-ctx.Done():
+			default:
+				trace.Publish(bsEvent)
+			}
+		}
+	}
+}