Class: Ask::AppServer::SessionManager

Inherits:
Object
  • Object
show all
Defined in:
lib/ask/app_server/session_manager.rb

Overview

Manages the lifecycle of agent sessions exposed through the session host (ask-app-server).

Orchestrates creation, resumption, subscription, messaging, aborting, interaction resolution (approvals, plan), closing, and event polling across AgentAdapter instances stored in SessionStore.

Constant Summary collapse

DEFAULT_TOOLS =

Default tools if none specified.

%w[bash read write edit glob grep].freeze
DEFAULT_MODEL =

Default model if none specified.

ENV.fetch("ASK_APP_SERVER_MODEL", "opencode_go/deepseek-v4-flash")
DEFAULT_REQUIRE_APPROVAL =

Tools gated behind human approval when approval is :require.

%w[write edit bash destroy].freeze

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(store: nil, permission_mode: :on_request, blocked_tools: nil, permission_timeout: 300) ⇒ SessionManager

Returns a new instance of SessionManager.



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# File 'lib/ask/app_server/session_manager.rb', line 26

def initialize(store: nil, permission_mode: :on_request, blocked_tools: nil, permission_timeout: 300)
  @store = store || SessionStore.new
  @permission_mode = permission_mode
  @blocked_tools = (blocked_tools || DEFAULT_REQUIRE_APPROVAL).map(&:to_s)
  @permission_timeout = permission_timeout
  @session_event_observers = []
  @logger = Logger.new($stdout, level: ENV["DEBUG"] ? Logger::DEBUG || Logger::DEBUG : Logger::WARN)
end

Instance Attribute Details

#blocked_tools ⇒ Object (readonly)

Returns the value of attribute blocked_tools.



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# File 'lib/ask/app_server/session_manager.rb', line 23

def blocked_tools
  @blocked_tools
end

#permission_mode ⇒ Object

Returns the value of attribute permission_mode.



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# File 'lib/ask/app_server/session_manager.rb', line 22

def permission_mode
  @permission_mode
end

#permission_timeout ⇒ Object (readonly)

Returns the value of attribute permission_timeout.



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# File 'lib/ask/app_server/session_manager.rb', line 24

def permission_timeout
  @permission_timeout
end

#store ⇒ Object (readonly)

Returns the value of attribute store.



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# File 'lib/ask/app_server/session_manager.rb', line 21

def store
  @store
end

Instance Method Details

#approval_mode ⇒ Object

The approval mode new sessions get, translated to the canonical vocabulary (:off, :require, :auto).



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# File 'lib/ask/app_server/session_manager.rb', line 49

def approval_mode
  translate_permission_mode(@permission_mode)
end

#approve_all_interactions(session_id) ⇒ Integer

Approve every pending approval interaction.

Returns:

  • (Integer) —

    number approved

Raises:



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# File 'lib/ask/app_server/session_manager.rb', line 165

def approve_all_interactions(session_id)
  adapter = @store.get(session_id)
  raise Ask::AppServer::SessionNotFound, "Session #{session_id} not found" unless adapter

  adapter.approve_all_interactions
end

#approve_interaction(session_id, interaction_id) ⇒ Boolean

Approve a pending approval interaction by canonical id.

Returns:

  • (Boolean)

Raises:



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# File 'lib/ask/app_server/session_manager.rb', line 147

def approve_interaction(session_id, interaction_id)
  adapter = @store.get(session_id)
  raise Ask::AppServer::SessionNotFound, "Session #{session_id} not found" unless adapter

  adapter.approve_interaction(interaction_id)
end

#close_session(session_id) ⇒ Object

Close a session (protocol alias of destroy_session).



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# File 'lib/ask/app_server/session_manager.rb', line 105

def close_session(session_id)
  destroy_session(session_id)
end

#create_session(workspace_path: nil, mode: nil, model: nil, tools: nil, system_prompt: nil) ⇒ Object

Create a new session. Returns the session ID.

Parameters:

  • mode (String, Symbol, nil) (defaults to: nil) —

    "on_request"/"build"/"edit" (approvals required for blocked tools), "auto", "never"/"off"/"yolo" (no approvals), "plan" (plan mode, read-only until approved); nil falls back to the manager's permission_mode



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# File 'lib/ask/app_server/session_manager.rb', line 60

def create_session(workspace_path: nil, mode: nil, model: nil, tools: nil, system_prompt: nil)
  approval_opts, plan_mode = resolve_approval(mode)

  # Extract provider prefix from model string (e.g., "opencode_go/deepseek-v4-flash")
  model_id, model_provider = parse_model_string(model || DEFAULT_MODEL)
  model_for_agent = model_provider ? model_id : (model || DEFAULT_MODEL)

  adapter = AgentAdapter.new(
    model: model_for_agent,
    tools: tools || DEFAULT_TOOLS,
    system_prompt: system_prompt || build_default_system_prompt(workspace_path),
    agent_dir: workspace_path,
    approval: approval_opts[:mode],
    require_approval: approval_opts[:require_approval],
    plan_mode: plan_mode
  )

  session_id = adapter.start_session
  @store.add(session_id, adapter)

  # Attach observers after registration so they see a settled store
  # (e.g. the pane reporter's session-count metadata), then replay
  # the session.created event the adapter buffered during start.
  adapter.on_event { |event| notify_session_event(adapter.session_id, event) }
  created = adapter.pending_events.find { |e| e.type == "session.created" }
  notify_session_event(session_id, created) if created

  @logger.info("Created session #{session_id} (model=#{model || DEFAULT_MODEL}, approval=#{approval_opts[:mode]})")

  session_id
end

#destroy_session(session_id) ⇒ Object

Remove a session.



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# File 'lib/ask/app_server/session_manager.rb', line 93

def destroy_session(session_id)
  adapter = @store.get(session_id)
  return false unless adapter

  adapter.abort_turn! if adapter.running
  adapter.close!
  @store.remove(session_id)
  @logger.info("Destroyed session #{session_id}")
  true
end

#get(session_id) ⇒ Object

Get an adapter by session ID.



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# File 'lib/ask/app_server/session_manager.rb', line 110

def get(session_id)
  @store.get(session_id)
end

#get_events(session_id, after_seq:, limit: nil) ⇒ Object

Get events for a session after a sequence number.

Raises:



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# File 'lib/ask/app_server/session_manager.rb', line 213

def get_events(session_id, after_seq:, limit: nil)
  adapter = @store.get(session_id)
  raise Ask::AppServer::SessionNotFound, "Session #{session_id} not found" unless adapter

  events = adapter.events_after(after_seq.to_i)
  events = events.first(limit) if limit && limit > 0

  {
    sessionId: session_id,
    events: events,
    hasMore: limit && limit > 0 && events.length >= limit
  }
end

#list_sessions(limit: 20) ⇒ Object

List active sessions.



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# File 'lib/ask/app_server/session_manager.rb', line 115

def list_sessions(limit: 20)
  @store.list(limit: limit)
end

#on_session_event(&block) ⇒ Object

Register an observer for canonical events across all sessions. Called with (session_id, Ask::SessionProtocol::Events::Event) for every emitted event, as it happens.



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# File 'lib/ask/app_server/session_manager.rb', line 38

def on_session_event(&block)
  @session_event_observers << block
end

#pending_interactions(session_id) ⇒ Object

Pending approval interactions for a session.

Raises:



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# File 'lib/ask/app_server/session_manager.rb', line 138

def pending_interactions(session_id)
  adapter = @store.get(session_id)
  raise Ask::AppServer::SessionNotFound, "Session #{session_id} not found" unless adapter

  adapter.pending_interactions
end

#plan_approve(session_id) ⇒ Boolean

Approve the pending plan proposal.

Returns:

  • (Boolean)

Raises:



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# File 'lib/ask/app_server/session_manager.rb', line 185

def plan_approve(session_id)
  adapter = @store.get(session_id)
  raise Ask::AppServer::SessionNotFound, "Session #{session_id} not found" unless adapter

  adapter.plan_approve
end

#plan_reject(session_id) ⇒ Boolean

Reject the pending plan proposal; the agent stays in plan mode.

Returns:

  • (Boolean)

Raises:



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# File 'lib/ask/app_server/session_manager.rb', line 194

def plan_reject(session_id)
  adapter = @store.get(session_id)
  raise Ask::AppServer::SessionNotFound, "Session #{session_id} not found" unless adapter

  adapter.plan_reject
end

#read_workspace_state(session_id = nil) ⇒ Object

Read workspace state.



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# File 'lib/ask/app_server/session_manager.rb', line 228

def read_workspace_state(session_id = nil)
  workspace = {
    path: nil,
    name: nil,
    gitBranch: nil,
    mode: approval_mode.to_s
  }

  if session_id
    adapter = @store.get(session_id)
    if adapter
      workspace[:sessionId] = session_id
      workspace[:running] = adapter.running
    end
  end

  settings = {
    model: {
      current: {
        modelId: ENV.fetch("ASK_APP_SERVER_MODEL", DEFAULT_MODEL),
        providerId: resolve_provider_id
      }
    },
    permissions: {
      mode: @permission_mode.to_s
    }
  }

  { workspace: workspace, settings: settings }
end

#reject_all_interactions(session_id) ⇒ Integer

Reject every pending approval interaction.

Returns:

  • (Integer) —

    number rejected

Raises:



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# File 'lib/ask/app_server/session_manager.rb', line 174

def reject_all_interactions(session_id)
  adapter = @store.get(session_id)
  raise Ask::AppServer::SessionNotFound, "Session #{session_id} not found" unless adapter

  adapter.reject_all_interactions
end

#reject_interaction(session_id, interaction_id) ⇒ Boolean

Reject a pending approval interaction by canonical id.

Returns:

  • (Boolean)

Raises:



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# File 'lib/ask/app_server/session_manager.rb', line 156

def reject_interaction(session_id, interaction_id)
  adapter = @store.get(session_id)
  raise Ask::AppServer::SessionNotFound, "Session #{session_id} not found" unless adapter

  adapter.reject_interaction(interaction_id)
end

#send_message(session_id, content, expected_turn_id: nil) ⇒ Hash

Send a message to a session (prompt when idle, mid-execution injection when running).

Returns:

  • (Hash) —

    { accepted: Boolean, status: "steered"|"queued"|"stale", turnId: }

Raises:



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# File 'lib/ask/app_server/session_manager.rb', line 123

def send_message(session_id, content, expected_turn_id: nil)
  adapter = @store.get(session_id)
  raise Ask::AppServer::SessionNotFound, "Session #{session_id} not found" unless adapter

  result = adapter.send_message(content, expected_turn_id: expected_turn_id)
  {
    accepted: result[:status] != "stale",
    status: result[:status],
    turnId: result[:turn_id]
  }
end

#subscribe(session_id, delivery_kind: "replay") ⇒ Object

Subscribe to a session's events.

Raises:



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# File 'lib/ask/app_server/session_manager.rb', line 204

def subscribe(session_id, delivery_kind: "replay")
  adapter = @store.get(session_id)
  raise Ask::AppServer::SessionNotFound, "Session #{session_id} not found" unless adapter

  @store.subscribe(session_id, delivery_kind: delivery_kind)
  { subscription: { sessionId: session_id, deliveryKind: delivery_kind } }
end

#subscribed?(session_id) ⇒ Boolean

Check if a session is subscribed.

Returns:

  • (Boolean) 


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# File 'lib/ask/app_server/session_manager.rb', line 260

def subscribed?(session_id)
  @store.subscribed?(session_id)
end