You can specify a folder path, load all rule chain configuration files with the suffix .json, and initialize the corresponding rule engine instances to the rule engine instance pool. Example:

config := rulego.NewConfig()
err := rulego.Load("./chains/", rulego.WithConfig(config))

Warning:

Each rule chain file needs to specify an Id, and ensure its uniqueness. For example:

{
  "ruleChain": {
    "id": "chain_call_rest_api",
    ...
  },
  "metadata": {}
}

Then get the rule chain instance by the rule chain ID:

ruleEngine, ok := rulego.Get("chain_call_rest_api")