Class: Ask::Rails::Harness::ChatController

Inherits:
ActionController::Base
  • Object
show all
Defined in:
app/controllers/ask/rails/harness/chat_controller.rb

Instance Method Summary collapse

Instance Method Details

#audit ⇒ Object

GET /ask/sessions/:session_id/audit — get audit logs for a session



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# File 'app/controllers/ask/rails/harness/chat_controller.rb', line 116

def audit
  logs = load_session_audit_logs(@session_id)
  render json: logs
end

#create ⇒ Object

POST /ask/sessions — create a new session



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# File 'app/controllers/ask/rails/harness/chat_controller.rb', line 23

def create
  session_id = SecureRandom.uuid

  agent = build_agent_session
  agent.save

  store_session_metadata(session_id, agent)

  redirect_to ask_rails_harness.root_path
end

#destroy_all ⇒ Object

DELETE /ask/sessions — destroy all sessions



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# File 'app/controllers/ask/rails/harness/chat_controller.rb', line 122

def destroy_all
  persistence = Ask::Rails::Harness.configuration.persistence_adapter
  if persistence
    persistence.list.each { |id| persistence.delete(id) }
  end
  redirect_to ask_rails_harness.root_path
end

#destroy_session ⇒ Object

DELETE /ask/sessions/:session_id — destroy a specific session



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# File 'app/controllers/ask/rails/harness/chat_controller.rb', line 131

def destroy_session
  persistence = Ask::Rails::Harness.configuration.persistence_adapter
  persistence&.delete(params[:session_id])
  redirect_to ask_rails_harness.root_path
end

#history ⇒ Object

GET /ask/sessions/:session_id/messages — get message history as JSON



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# File 'app/controllers/ask/rails/harness/chat_controller.rb', line 110

def history
  messages = load_session_messages(@session_id)
  render json: messages
end

#index ⇒ Object

GET /ask — main chat interface



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# File 'app/controllers/ask/rails/harness/chat_controller.rb', line 15

def index
  @sessions = load_sessions
  @active_session = @sessions.first
  @audit_logs = load_recent_audit_logs
  render :index
end

#index_sessions ⇒ Object

GET /ask/sessions — list all sessions



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# File 'app/controllers/ask/rails/harness/chat_controller.rb', line 42

def index_sessions
  @sessions = load_sessions
  render json: @sessions
end

#message ⇒ Object

POST /ask/sessions/:session_id/messages — send a message, get SSE stream



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# File 'app/controllers/ask/rails/harness/chat_controller.rb', line 48

def message
  prompt = params[:message].to_s.strip
  return head :bad_request if prompt.empty?

  response.headers["Content-Type"] = "text/event-stream"
  response.headers["Cache-Control"] = "no-cache"
  response.headers["X-Accel-Buffering"] = "no"
  response.headers["Last-Modified"] = Time.now.httpdate

  self.response_body = Enumerator.new do |yielder|
    agent = resume_or_create_session(@session_id)

    # Subscribe to tool execution events
    tool_sub = subscribe_tool_events(agent, yielder)

    yielder << "data: #{JSON.generate(type: 'start', session_id: @session_id)}\n\n"

    begin
      agent.run(prompt) do |chunk|
        if chunk.content&.length&.> 0
          yielder << "data: #{JSON.generate(type: 'delta', content: chunk.content)}\n\n"
        end
        if chunk.thinking&.length&.> 0
          yielder << "data: #{JSON.generate(type: 'thinking', content: chunk.thinking)}\n\n"
        end
      end

      agent.save
      @session = agent

      yielder << "data: #{JSON.generate(type: 'done', session_id: @session_id)}\n\n"
    rescue Ask::Agent::MaxTurnsExceeded => e
      yielder << "data: #{JSON.generate(type: 'error', message: "Agent hit the turn limit (#{e.message})")}\n\n"
    rescue Ask::Auth::MissingCredential => e
      yielder << "data: #{JSON.generate(type: 'error', message: "Missing API key: #{e.message}. Check your provider configuration.")}\n\n"
    rescue Ask::Auth::InvalidCredential => e
      yielder << "data: #{JSON.generate(type: 'error', message: "Invalid API key: #{e.message}. Update your credentials.")}\n\n"
    rescue StandardError => e
      yielder << "data: #{JSON.generate(type: 'error', message: "Agent error: #{e.message}")}\n\n"
    end
  ensure
    agent&.remove_event_subscriber(tool_sub) if tool_sub
  end
end

#show ⇒ Object

GET /ask/sessions/:id — show a specific session



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# File 'app/controllers/ask/rails/harness/chat_controller.rb', line 35

def show
  @messages = load_session_messages(@session_id)
  @audit_logs = load_session_audit_logs(@session_id)
  render json: { id: @session_id, messages: @messages, audit_logs: @audit_logs }
end

#stream ⇒ Object

GET /ask/sessions/:session_id/stream — SSE stream for an existing session



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# File 'app/controllers/ask/rails/harness/chat_controller.rb', line 94

def stream
  response.headers["Content-Type"] = "text/event-stream"
  response.headers["Cache-Control"] = "no-cache"
  response.headers["X-Accel-Buffering"] = "no"

  self.response_body = Enumerator.new do |yielder|
    messages = load_session_messages(@session_id)
    audit_logs = load_session_audit_logs(@session_id)
    yielder << "data: #{JSON.generate(type: 'history', messages: messages, audit_logs: audit_logs)}\n\n"

    sleep 30
    yielder << "data: #{JSON.generate(type: 'keepalive')}\n\n"
  end
end