graphvent/extension.go

17 lines
563 B
Go

package graphvent
type Tag string
type Changes []Tag
// Extensions are data attached to nodes that process signals
type Extension interface {
// Called to process incoming signals, returning changes and messages to send
Process(*Context, *Node, NodeID, Signal) ([]SendMsg, Changes)
// Called when the node is loaded into a context(creation or move), so extension data can be initialized
Load(*Context, *Node) error
// Called when the node is unloaded from a context(deletion or move), so extension data can be cleaned up
Unload(*Context, *Node)
}