GtBridge.EvalRegistry (gt_bridge v0.17.3)

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I map session IDs to GtBridge.Eval processes.

A session maps to a single evaluation context in GT — one page view or one inspector view. All snippets within the same view share a session (same bindings). Opening the same page twice creates two sessions.

On the GT side, the scope object is GtSharedVariablesBindings (inside LeSharedSnippetContext). It is created per LePageViewModel and propagated to all snippet view models. The session ID (a UUID) is stored in a class-side WeakIdentityKeyDictionary on LeElixirSnippetElement, identity-keyed on the bindings object.

Sessions are created on demand (first eval) and removed when GT's BeamSessionFinalizer fires on GC of the shared bindings object, sending POST /SESSION_CLOSE.

I use an Elixir Registry for lookup and start new Eval processes under EvaluationSupervisor on demand. Sessions without a sessionId use "default" for backward compatibility.

Public API

  • get_or_create/2 — return the Eval pid for a session, starting one if needed.
  • remove/1 — stop and unregister the Eval for a session.

Summary

Functions

get_or_create(session_id, opts \\ [])

I return the Eval pid for session_id, starting one if needed.

remove(session_id)

I stop and unregister the Eval for session_id.

Functions

get_or_create(session_id, opts \\ [])

@spec get_or_create(
  String.t(),
  keyword()
) :: GenServer.server()

I return the Eval pid for session_id, starting one if needed.

remove(session_id)

@spec remove(String.t()) :: :ok

I stop and unregister the Eval for session_id.