Returns a specification to start this module under a supervisor.

See Supervisor.

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

Deletes a workflow instance by ID from the default ETS server.

Removes the entry from the ETS table via :ets.delete/2. The operation is idempotent — deleting a non-existent instance is not an error.

@spec delete(server(), String.t()) :: :ok

Deletes a workflow instance by ID from the given server.

@spec get(String.t()) :: {:ok, Hephaestus.Core.Instance.t()} | {:error, :not_found}

Retrieves a workflow instance by ID from the default ETS server.

Looks up the instance in the named ETS table via a GenServer.call/2. Returns {:ok, instance} if found, or {:error, :not_found} otherwise.

@spec get(server(), String.t()) ::
  {:ok, Hephaestus.Core.Instance.t()} | {:error, :not_found}

Retrieves a workflow instance by ID from the given server.

@spec put(Hephaestus.Core.Instance.t()) :: :ok

Persists a workflow instance in the default ETS server.

Inserts or overwrites the instance keyed by its ID using :ets.insert/2.

@spec put(server(), Hephaestus.Core.Instance.t()) :: :ok

Persists a workflow instance in the given server.

@spec query(filters()) :: [Hephaestus.Core.Instance.t()]

Returns all workflow instances matching the given filters from the default ETS server.

Performs a full table scan with :ets.tab2list/1 and filters in-memory by :status and :workflow fields. An empty filter list returns all stored instances.

@spec query(server(), filters()) :: [Hephaestus.Core.Instance.t()]

Returns all workflow instances matching the given filters from the given server.

@spec start_link(keyword()) :: GenServer.on_start()

Starts the ETS storage process and links it to the caller.

Options

• :name - the registered process name (defaults to Hephaestus.Runtime.Storage.ETS).