Class: Llm::Agent::Rails::Orchestrator

Inherits:
Object
  • Object
show all
Defined in:
lib/llm/agent/rails/orchestrator.rb

Constant Summary collapse

POLICY = 
<<~SYS
  You are a task-oriented assistant that turns chat into structured tool calls.

  Rules:
  - First, extract as many required fields as possible from the user's latest message and prior context.
  - Only ask for fields that are truly missing or ambiguous (one concise question at a time).
  - Derive a short, descriptive title if not supplied (e.g., "Apple Pay checkout failure on mobile").
  - Prefer sensible defaults when the schema allows (e.g., priority=medium).
  - When you have all required fields, call exactly one function.

  Reply briefly and clearly.
SYS

Instance Method Summary collapse

Constructor Details

#initialize(adapter:, registry:, store:) ⇒ Orchestrator

Returns a new instance of Orchestrator.



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# File 'lib/llm/agent/rails/orchestrator.rb', line 21

def initialize(adapter:, registry:, store:)
  @adapter, @registry, @store = adapter, registry, store
end

Instance Method Details

#step(thread_id:, tenant_id:, actor_id:, messages:) ⇒ Object 



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# File 'lib/llm/agent/rails/orchestrator.rb', line 25

def step(thread_id:, tenant_id:, actor_id:, messages:)
  prior_tool_msgs = @store.fetch_tool_messages(thread_id)

  res = @adapter.step(
    system_prompt: POLICY,
    messages: messages,
    tools: @registry.tools_for_llm,
    tool_results: prior_tool_msgs
  )

  if (calls = res[:tool_calls]).is_a?(Array) && calls.any?
    call = calls.first
    fn   = call.respond_to?(:function) ? call.function : nil
    name = fn&.respond_to?(:name) ? fn.name : nil
    args_json = fn&.respond_to?(:arguments) ? fn.arguments.to_s : "{}"
    args = args_json.empty? ? {} : JSON.parse(args_json)

    tool_name, version = (name or "").split(/_v/i)
    version ||= "v1"

    tool = @registry.tool(tool_name, version: "v1")
    Validators.validate!(tool.schema, args)

    ctx = { tenant_id: tenant_id, actor_id: actor_id, thread_id: thread_id }
    result = tool.handler.call(args, ctx)

    tool_msg = @adapter.tool_result_message(
      tool_call_id: call.respond_to?(:id) ? call.id : nil,
      name: "#{tool_name}_v1",
      content: result
    )
    @store.push_tool_message(thread_id, tool_msg)

    return { type: :tool_ran, tool_name: tool_name, result: result }
  end

  if (fc = res[:function_call])
    name_with_version = fc["name"]
    args_json = fc["arguments"].to_s
    args = args_json.empty? ? {} : JSON.parse(args_json)

    tool_name, version = name_with_version.split(/_v/i)
    version ||= "v1"

    tool = @registry.tool(tool_name, version: "v1")
    Validators.validate!(tool.schema, args)

    ctx = { tenant_id: tenant_id, actor_id: actor_id, thread_id: thread_id }
    result = tool.handler.call(args, ctx)

    return { type: :tool_ran, tool_name: tool_name, result: result }
  end

  { type: :assistant, text: res[:content].to_s }
end