replication/driver: automatic retries on connectivity-related errors

replication/driver/replication_driver_logging.go

@@ -0,0 +1,25 @@
+package driver
+
+import (
+	"context"
+
+	"github.com/zrepl/zrepl/logger"
+)
+
+type Logger = logger.Logger
+
+type contexKey int
+
+const contexKeyLogger contexKey = iota + 1
+
+func getLog(ctx context.Context) Logger {
+	l, ok := ctx.Value(contexKeyLogger).(Logger)
+	if !ok {
+		l = logger.NewNullLogger()
+	}
+	return l
+}
+
+func WithLogger(ctx context.Context, log Logger) context.Context {
+	return context.WithValue(ctx, contexKeyLogger, log)
+}