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AgentScheduler

oxios_kernel::scheduler

Struct AgentScheduler 

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pub struct AgentScheduler { /* private fields */ }
Expand description

The agent scheduler.

Manages task queues, rate limiting, zombie detection, and priority scheduling. This is the central coordinator for all agent task execution.

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impl AgentScheduler

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pub fn new( max_concurrent: usize, rate_limit_per_minute: u32, zombie_timeout_secs: u64, ) -> Self

Creates a new scheduler.

§Arguments
  • max_concurrent - Maximum number of tasks that can run simultaneously
  • rate_limit_per_minute - Maximum LLM API calls per minute
  • zombie_timeout_secs - How long before a running task is considered a zombie
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pub fn set_budget_manager(&mut self, bm: Arc<BudgetManager>)

Attaches a budget manager for scheduling checks.

When a budget manager is set, the scheduler will:

  • Check can_schedule() before starting a task (soft gate)
  • Track calls via track_call() when a task begins

If no budget manager is set, tasks proceed normally.

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pub fn submit(&self, task: ScheduledTask) -> Result<Uuid>

Submits a task to the scheduler queue.

Returns the task ID on success.

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pub fn next_task(&self) -> Option<ScheduledTask>

Gets the next task ready for execution.

Returns None if:

  • The queue is empty
  • Max concurrent limit is reached
  • Rate limit is exceeded
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pub fn complete_task(&self, task_id: Uuid) -> Result<()>

Marks a task as completed.

Removes the task from the running map.

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pub fn fail_task(&self, task_id: Uuid, error: &str) -> Result<()>

Marks a task as failed with an error message.

Removes the task from the running map.

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pub fn reap_zombies(&self) -> Vec<Uuid>

Detects and reaps zombie tasks (running longer than the configured timeout).

Returns the IDs of tasks that were reaped.

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pub fn start_task(&self, task_id: Uuid) -> Result<()>

Marks a task as running by task ID.

The task must be in the queue (status Queued). This is used by the orchestrator to atomically claim a submitted task before execution.

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pub fn cancel_task(&self, task_id: Uuid) -> Result<()>

Cancels a queued task by ID.

Only works on tasks still in the queue (not yet running).

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pub fn stats(&self) -> SchedulerStats

Returns the current scheduler statistics.

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pub fn rate_limit_remaining(&self) -> u32

Returns remaining rate limit capacity.

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pub fn queued_tasks(&self) -> Vec<ScheduledTask>

Returns all queued tasks (for debugging/monitoring).

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pub fn running_tasks(&self) -> Vec<ScheduledTask>

Returns all running tasks (for debugging/monitoring).

Trait Implementations§

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impl Default for AgentScheduler

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fn default() -> Self

Returns the “default value” for a type. Read more

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