wip

lib/core.js

@@ -659,6 +659,45 @@ module.exports = class Core {
     s._monitorIndex = this.monitors.push(s) - 1
   }
 
+  // mostly for internal use when you know what you are doing!
+  // some caveats: does not work with preload etc nor does it work exclusive sessions
+  async moveFrom (core) {
+    await core.state.mutex.lock()
+
+    const named = new Map()
+
+    for (const s of this.sessionStates) {
+      if (s.name) named.set(s.name, s)
+    }
+
+    for (let i = 0; i < core.sessionStates.length; i++) {
+      const s = core.sessionStates[i]
+
+      for (let j = 0; j < s.sessions.length; j++) {
+        const session = s.sessions[i]
+        session.core = this
+
+        if (!s.isSnapshot()) {
+          const state = s.name ? named.get(s.name) : this.state
+          if (!state) throw new Error('Unknown state: ' + s.name)
+
+          session.state.removeSession(session)
+          session.state = state
+          state.addSession(session)
+        } else {
+          // TODO: move state over
+        }
+
+        if (session._monitorIndex >= 0) {
+          core.removeMonitor(session)
+          this.addMonitor(session)
+        }
+      }
+    }
+
+    await core.state.mutex.unlock()
+  }
+
   removeMonitor (s) {
     if (s._monitorIndex < 0) return
     const head = this.monitors.pop()