hermes-agent
5197b6ece6
Exposes self-hosted n8n chat agents behind /v1/chat/completions and /v1/models. Model -> n8n webhook routing via a GenServer registry, so multiple agents map to multiple models. Plug + Bandit, req for the n8n webhook call, Bearer auth (ADAPTER_API_KEY). Ships a flake.nix (beamPackages.mixRelease) so it can be consumed as a NixOS flake input.
45 lines
1.4 KiB
Elixir
45 lines
1.4 KiB
Elixir
defmodule N8nOpenaiAdapter.Application do
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@moduledoc """
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OTP application entrypoint. Starts the AgentRegistry (model -> n8n webhook
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mapping, loaded from config) and the Bandit HTTP server behind the Plug router.
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"""
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use Application
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@impl true
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def start(_type, _args) do
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children = [
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{N8nOpenaiAdapter.AgentRegistry, configured_agents()},
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{Bandit, plug: N8nOpenaiAdapter.Router, scheme: :http, port: port()}
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]
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opts = [strategy: :one_for_one, name: N8nOpenaiAdapter.Supervisor]
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Supervisor.start_link(children, opts)
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end
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defp port, do: String.to_integer(System.get_env("PORT", "8000"))
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defp configured_agents do
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# Prefer application env (:agents) — settable from config/*.exs, which loads
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# before the app boots. Falls back to the AGENTS env var (JSON map of
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# model -> n8n chat webhook URL).
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case Application.fetch_env(:n8n_openai_adapter, :agents) do
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{:ok, agents} when is_map(agents) ->
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agents
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_ ->
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case System.get_env("AGENTS") do
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nil ->
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# single agent from old N8N_WEBHOOK_URL / MODEL_NAME env
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model = System.get_env("MODEL_NAME", "default-agent")
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case System.get_env("N8N_WEBHOOK_URL") do
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nil -> %{}
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webhook -> %{model => webhook}
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end
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json ->
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Jason.decode!(json)
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end
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end
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end
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end
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