A module's state on the bus: buckets from the catalogue, grants, membership (novox/hq ADR 0201)

A manifest names the state it keeps (state) and reads (reads); the controller
asserts a key-value bucket per name on every raise, grants owners write and
readers read (measured against a running server), issues each assignment its
buckets in the membership, and reports buckets nothing declares without
removing them.

cmd/mesh-controller/push.go

@@ -898,6 +898,21 @@ func raiseTheBus(ctx context.Context, inv *inventory.Inventory, address string)
 	if err := broker.RaiseSeats(js, inventory.MeshSeats(), holders); err != nil {
 		return err
 	}
+	// Every module's state (novox/hq ADR 0201), from the catalogue: a bucket exists from
+	// registration, so a module reading one may watch it before its owner runs anywhere. One that
+	// nothing declares any more is said and kept — what it holds is data.
+	buckets, err := inv.DeclaredBuckets(ctx)
+	if err != nil {
+		return err
+	}
+	undeclared, err := broker.RaiseBuckets(js, buckets)
+	if err != nil {
+		return err
+	}
+	if len(undeclared) > 0 {
+		fmt.Printf("the bus holds state nothing declares any more, kept because it is data: %s — "+
+			"removing it is a person's act\n", strings.Join(undeclared, ", "))
+	}
 	// And how every module hears what it consumes. Derived from the same records the user list is
 	// composed from, so a module the mesh grants a consumer's subjects has that consumer waiting.
 	// Done on every raise, not only when a credential is issued: every module moved onto this bus
@@ -921,8 +936,8 @@ func raiseTheBus(ctx context.Context, inv *inventory.Inventory, address string)
 		}
 		hearing++
 	}
-	fmt.Printf("the bus at %s has its streams, %d machine(s) can hear a declaration, and %d module(s) "+
-		"can hear what they consume\n", broker.BareAddress(address), len(names), hearing)
+	fmt.Printf("the bus at %s has its streams, %d machine(s) can hear a declaration, %d module(s) "+
+		"can hear what they consume, and %d bucket(s) of state\n", broker.BareAddress(address), len(names), hearing, len(buckets))
 	return nil
 }