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    Pythonlanggraphpregel_loopAsyncPregelLoop
    Class●Since v0.6

    AsyncPregelLoop

    Copy
    AsyncPregelLoop(
      self,
      input: Any | None,
      *,
      stream: StreamProtocol | None,
      config: RunnableConfig,
      store: BaseStore | None,
      cache: BaseCache | None,
      checkpointer: BaseCheckpointSaver | None,
      nodes: Mapping[str, PregelNode],
      specs: Mapping[str, BaseChannel | ManagedValueSpec],
      trigger_to_nodes: Mapping[str, Sequence[str]],
      durability: Durability,
      interrupt_after: All | Sequence[str] = EMPTY_SEQ,
      interrupt_before: All | Sequence[str] = EMPTY_SEQ,
      manager: None | AsyncParentRunManager | ParentRunManager = None,
      input_keys: str | Sequence[str] = EMPTY_SEQ,
      output_keys: str | Sequence[str] = EMPTY_SEQ,
      stream_keys: str | Sequence[str] = EMPTY_SEQ,
      migrate_checkpoint: Callable[[Checkpoint], None] | None = None,
      retry_policy: Sequence[RetryPolicy] = (),
      cache_policy: CachePolicy | None = None
    )

    Bases

    PregelLoopAbstractAsyncContextManager

    Constructors

    constructor
    __init__
    NameType
    inputAny | None
    streamStreamProtocol | None
    configRunnableConfig
    storeBaseStore | None
    cacheBaseCache | None
    checkpointerBaseCheckpointSaver | None
    nodesMapping[str, PregelNode]
    specsMapping[str, BaseChannel | ManagedValueSpec]
    trigger_to_nodesMapping[str, Sequence[str]]
    durabilityDurability
    interrupt_afterAll | Sequence[str]
    interrupt_beforeAll | Sequence[str]
    managerNone | AsyncParentRunManager | ParentRunManager
    input_keysstr | Sequence[str]
    output_keysstr | Sequence[str]
    stream_keysstr | Sequence[str]
    migrate_checkpointCallable[[Checkpoint], None] | None
    retry_policySequence[RetryPolicy]
    cache_policyCachePolicy | None

    Attributes

    attribute
    stack
    attribute
    checkpointer_get_next_version
    attribute
    checkpointer_put_writes
    attribute
    checkpointer_put_writes_accepts_task_path

    Methods

    method
    amatch_cached_writes
    method
    aaccept_push
    method
    put_writes

    Put writes for a task, to be read by the next tick.

    Inherited fromPregelLoop

    Attributes

    Aconfig: RunnableConfigAstore: BaseStore | NoneAstream: StreamProtocol | NoneAstep: intAstop: intAinput: Any | NoneAcache: BaseCache[WritesT] | NoneAcheckpointer: BaseCheckpointSaver | NoneAnodes: Mapping[str, PregelNode]Aspecs: Mapping[str, BaseChannel | ManagedValueSpec]Ainput_keys: str | Sequence[str]Aoutput_keys: str | Sequence[str]Astream_keys: str | Sequence[str]Ais_replaying: boolAis_nested: boolAmanager: None | AsyncParentRunManager | ParentRunManagerAinterrupt_after: All | Sequence[str]Ainterrupt_before: All | Sequence[str]Adurability: DurabilityAretry_policy: Sequence[RetryPolicy]Acache_policy: CachePolicy | NoneAsubmit: SubmitAchannels: Mapping[str, BaseChannel]Amanaged: ManagedValueMappingAcheckpoint: CheckpointAcheckpoint_id_saved: strAcheckpoint_ns: tuple[str, ...]Acheckpoint_config: RunnableConfigAcheckpoint_metadata: CheckpointMetadataAcheckpoint_pending_writes: list[PendingWrite]Acheckpoint_previous_versions: dict[str, str | float | int]Aprev_checkpoint_config: RunnableConfig | NoneAstatus: Literal['input', 'pending', 'done', 'interrupt_before', 'interrupt_after', 'out_of_steps']Atasks: dict[str, PregelExecutableTask]Aoutput: None | dict[str, Any] | AnyAupdated_channels: set[str] | NoneAtrigger_to_nodes: trigger_to_nodes

    Methods

    Maccept_push
    —

    Accept a PUSH from a task, potentially returning a new task to start.

    Mtick
    —

    Execute a single iteration of the Pregel loop.

    Mafter_tickMmatch_cached_writesMoutput_writes
    View source on GitHub