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Copied changes from spaCy/tmp/project-multiprocess
This commit is contained in:
richardpaulhudson
parent
5aa95ce499
commit
70fa1ce644
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@ -7,17 +7,17 @@ subprocesses for these OS level commands serially, and sends status information
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execution back to the main process.
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The main process maintains a state machine for each spaCy projects command/worker process. The meaning
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of the states is documented alongside the _ParallelCommandInfo.STATES code. Note that the distinction
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of the states is documented alongside the _ParallelCommand.STATES code. Note that the distinction
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between the states 'failed' and 'terminated' is not meaningful on Windows, so that both are displayed
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as 'failed/terminated' on Windows systems.
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"""
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from typing import Any, List, Optional, Dict, Union, cast, Iterator
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from typing import Any, List, Optional, Dict, cast, Iterator, Tuple, BinaryIO
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import os
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import sys
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import queue
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from pathlib import Path
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from time import time
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from multiprocessing import Manager, Queue, get_context
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from multiprocessing import Manager, get_context
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from multiprocessing.context import SpawnProcess
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from tempfile import mkdtemp
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from signal import SIGTERM
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@ -34,9 +34,13 @@ from ...errors import Errors
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# Use spawn to create worker processes on all OSs for consistency
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_mp_context = get_context("spawn")
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# How often the worker processes managing the commands in a parallel group
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# How often the worker processes managing commands in a parallel group
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# send keepalive messages to the main process (seconds)
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_PARALLEL_GROUP_STATUS_INTERVAL = 1
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_KEEPALIVE_INTERVAL = 1
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# How long a worker can fail to send keepalive messages before the main process
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# marks it as hung
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_KEEPALIVE_MAX_LATENCY = 20
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# The maximum permissible width of divider text describing a parallel command group
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_MAX_WIDTH_DIVIDER = 60
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@ -46,14 +50,41 @@ _DISPLAY_STATUS_TABLE = sys.stdout.isatty() and supports_ansi()
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@dataclass
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class _ParallelCommandState:
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name: str
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display_color: str
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# transitions: the names of states that can legally follow this state
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transitions: List = field(default_factory=list)
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class _Message:
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"""A status message from a worker process to the main process"""
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cmd_index: int
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class _ParallelCommandInfo:
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@dataclass
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class _Started(_Message):
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os_cmd_index: int
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pid: int
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@dataclass
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class _KeepAlive(_Message):
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pass
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@dataclass
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class _Completed(_Message):
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rc: int
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console_output: str
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class _ParallelCommand:
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"""A spaCy projects command within a parallel group."""
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@dataclass
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class _ParallelCommandState:
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name: str
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display_color: str
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# transitions: the names of states that can legally follow this state
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transitions: List = field(default_factory=list)
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def is_final(self) -> bool:
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return len(self.transitions) == 0
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STATES = (
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# The command has not yet been run
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@ -68,12 +99,17 @@ class _ParallelCommandInfo:
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_ParallelCommandState("starting", "green", ["running", "failed", "hung"]),
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# The command is running
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_ParallelCommandState(
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"running", "green", ["running", "succeeded", "failed", "terminated", "hung"]
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"running",
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"green",
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["running", "succeeded", "failed", "terminating", "terminated", "hung"],
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),
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# The command succeeded (rc=0)
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_ParallelCommandState("succeeded", "green"),
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# The command failed (rc>0)
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# The command failed, or was terminated on Windows platforms (rc>0)
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_ParallelCommandState("failed", "red"),
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# The main process has terminated the currently running subprocess but has not yet received
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# an acknowledgement from the worker process.
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_ParallelCommandState("terminating", "red", ["failed", "terminated"]),
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# The command was terminated (rc<0), usually but not necessarily by the main process because
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# another command within the same parallel group failed
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_ParallelCommandState("terminated", "red"),
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@ -87,32 +123,70 @@ class _ParallelCommandInfo:
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state_dict = {state.name: state for state in STATES}
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def __init__(self, cmd_name: str, cmd: Dict, cmd_index: int):
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self.cmd_name = cmd_name
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self.cmd = cmd
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self.cmd_index = cmd_index
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self.state = _ParallelCommandInfo.state_dict["pending"]
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def __init__(self, config_command: Dict, index: int, dry: bool, temp_log_dir: Path):
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"""
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config_command -- the command dictionary from the project config file
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index -- the index of the command within the parallel group.
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dry (bool): Perform a dry run and don't execute commands.
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temp_log_dir -- the temporary directory used for managing the log files
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of the commands within the parallel group.
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"""
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self.config_command = config_command
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self.name = config_command["name"]
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self.index = index
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self.os_cmds: List[str] = config_command["script"]
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self.dry = dry
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self.log_path = temp_log_dir / (self.name + ".log")
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# we can use the command name as a unique log filename because a parallel
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# group is not allowed to contain the same command more than once
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self.state = _ParallelCommand.state_dict["pending"]
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self.worker_process: Optional[SpawnProcess] = None
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self.pid: Optional[int] = None
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self.last_keepalive_time: Optional[int] = None
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self.running_os_cmd_index: Optional[int] = None
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self.rc: Optional[int] = None
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self.console_output: Optional[str] = None
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def change_state(self, new_state: str):
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def start(self, parallel_group_status_queue: queue.Queue) -> None:
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"""Create and start a multiprocessing process for this command."""
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self.change_state("starting")
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self.last_keepalive_time = int(time())
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self.worker_process = _mp_context.Process(
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target=_project_run_parallel_cmd,
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args=[],
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kwargs={
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"cmd_index": self.index,
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"os_cmds": self.os_cmds,
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"dry": self.dry,
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"log_path": self.log_path,
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"parallel_group_status_queue": parallel_group_status_queue,
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},
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)
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self.worker_process.start()
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def notify_started(self, mess: _Started) -> None:
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"""Record the information the running multiprocessing process returned about itself."""
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self.change_state("running")
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self.running_os_cmd_index = mess.os_cmd_index
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self.pid = mess.pid
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def terminate_if_alive(self) -> None:
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# terminates the worker process itself, as opposed to 'cancel_not_succeeded_group'
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# which terminates a subprocess started by the worker process
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if self.worker_process is not None and self.worker_process.is_alive():
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self.worker_process.terminate()
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def change_state(self, new_state: str) -> None:
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if new_state not in self.state.transitions:
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raise RuntimeError(
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Errors.E1044.format(old_state=self.state.name, new_state=new_state)
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)
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self.state = _ParallelCommandInfo.state_dict[new_state]
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self.state = _ParallelCommand.state_dict[new_state]
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@property
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def state_repr(self) -> str:
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state_str = self.state.name
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if state_str == "running" and self.running_os_cmd_index is not None:
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number_of_os_cmds = len(self.cmd["script"])
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state_str = (
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f"{state_str} ({self.running_os_cmd_index + 1}/{number_of_os_cmds})"
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)
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if state_str == "running":
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state_str = f"{state_str} ({cast(int, self.running_os_cmd_index) + 1}/{len(self.os_cmds)})"
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elif state_str in ("failed", "terminated") and os.name == "nt":
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state_str = "failed/terminated"
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# we know ANSI commands are available because otherwise
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@ -133,335 +207,428 @@ def project_run_parallel_group(
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when executing commands serially. Essentially, with parallel groups 'capture==True'.
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project_dir (Path): Path to project directory.
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cmd_names: the names of the spaCy projects commands to run.
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cmd_names: the names of the spaCy projects commands within the parallel group.
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overrides (Dict[str, Any]): Optional config overrides.
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force (bool): Force re-running, even if nothing changed.
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dry (bool): Perform a dry run and don't execute commands.
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"""
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config = load_project_config(project_dir, overrides=overrides)
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commands = {cmd["name"]: cmd for cmd in config.get("commands", [])}
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check_spacy_commit = check_bool_env_var(ENV_VARS.PROJECT_USE_GIT_VERSION)
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max_parallel_processes = config.get("max_parallel_processes")
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cmd_infos = [
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_ParallelCommandInfo(cmd_name, commands[cmd_name], cmd_index)
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for cmd_index, cmd_name in enumerate(cmd_names)
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]
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temp_log_dir = mkdtemp()
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temp_log_dir = Path(mkdtemp())
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_print_divider(cmd_names, temp_log_dir)
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with working_dir(project_dir) as current_dir:
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config = load_project_config(current_dir, overrides=overrides)
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divider_parallel_descriptor = parallel_descriptor = (
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"parallel[" + ", ".join(cmd_info.cmd_name for cmd_info in cmd_infos) + "]"
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parallel_cmds = _read_commands_from_config(
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config, cmd_names, current_dir, dry, temp_log_dir
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)
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max_parallel_processes: int = config.get(
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"max_parallel_processes", len(parallel_cmds)
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)
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if len(divider_parallel_descriptor) > _MAX_WIDTH_DIVIDER:
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divider_parallel_descriptor = (
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divider_parallel_descriptor[: (_MAX_WIDTH_DIVIDER - 3)] + "..."
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)
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msg.divider(divider_parallel_descriptor)
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if not _DISPLAY_STATUS_TABLE and len(parallel_descriptor) > _MAX_WIDTH_DIVIDER:
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# reprint the descriptor if it was too long and had to be cut short
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print(parallel_descriptor)
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msg.info("Temporary logs are being written to " + temp_log_dir)
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parallel_group_status_queue = Manager().Queue()
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for cmd_info in cmd_infos:
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check_deps(cmd_info.cmd, cmd_info.cmd_name, project_dir, dry)
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if (
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not check_rerun(
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current_dir, cmd_info.cmd, check_spacy_commit=check_spacy_commit
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)
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and not force
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):
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cmd_info.change_state("not rerun")
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worker_processes: List[SpawnProcess] = []
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proc_to_cmd_infos: Dict[SpawnProcess, _ParallelCommandInfo] = {}
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for cmd_info in cmd_infos:
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if cmd_info.state.name == "not rerun":
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for parallel_cmd in parallel_cmds:
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if not _is_cmd_to_rerun(parallel_cmd, current_dir, force):
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parallel_cmd.change_state("not rerun")
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continue
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worker_process = _mp_context.Process(
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target=_project_run_parallel_cmd,
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args=(cmd_info,),
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kwargs={
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"dry": dry,
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"temp_log_dir": temp_log_dir,
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"parallel_group_status_queue": parallel_group_status_queue,
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},
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)
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worker_processes.append(worker_process)
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proc_to_cmd_infos[worker_process] = cmd_info
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num_concurr_worker_processes = len(worker_processes)
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if (
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max_parallel_processes is not None
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and max_parallel_processes < num_concurr_worker_processes
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):
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num_concurr_worker_processes = max_parallel_processes
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next_cmd_to_start_iter = iter(
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c for c in parallel_cmds if c.state.name != "not rerun"
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)
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worker_process_iterator = iter(worker_processes)
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for _ in range(num_concurr_worker_processes):
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_start_worker_process(next(worker_process_iterator), proc_to_cmd_infos)
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_process_worker_status_messages(
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cmd_infos,
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proc_to_cmd_infos,
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for _ in range(max_parallel_processes):
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if not _start_next_cmd(next_cmd_to_start_iter, parallel_group_status_queue):
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break
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completed_messages = _process_worker_status_messages(
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parallel_cmds,
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next_cmd_to_start_iter,
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parallel_group_status_queue,
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worker_process_iterator,
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current_dir,
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dry,
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)
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for cmd_info in (c for c in cmd_infos if c.state.name != "cancelled"):
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msg.divider(cmd_info.cmd_name)
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if cmd_info.state.name == "not rerun":
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msg.info(f"Skipping '{cmd_info.cmd_name}': nothing changed")
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elif cmd_info.console_output is not None:
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print(cmd_info.console_output)
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# Occasionally when something has hung there may still be worker processes to tidy up
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for hung_worker_process in (wp for wp in worker_processes if wp.is_alive()):
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hung_worker_process.terminate()
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process_rcs = [c.rc for c in cmd_infos if c.rc is not None]
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if len(process_rcs) > 0:
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group_rc = max(process_rcs)
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if group_rc > 0:
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msg.fail("A command in the parallel group failed.")
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sys.exit(group_rc)
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if any(c for c in cmd_infos if c.state.name in ("hung", "terminated")):
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msg.fail("Command(s) in the parallel group hung or were terminated.")
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sys.exit(-1)
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_print_group_output(
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[
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(c.name, c.state.name, completed_messages[i])
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for i, c in enumerate(parallel_cmds)
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]
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)
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group_rc = _get_group_rc(completed_messages)
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if group_rc > 0:
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msg.fail("A command in the parallel group failed.")
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sys.exit(group_rc)
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elif any(1 for c in parallel_cmds if c.state.name == "hung"):
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msg.fail("Command(s) in the parallel group hung.")
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sys.exit(group_rc)
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elif group_rc < 0:
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msg.fail("Command(s) in the parallel group were terminated.")
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sys.exit(group_rc)
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def _process_worker_status_messages(
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cmd_infos: List[_ParallelCommandInfo],
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proc_to_cmd_infos: Dict[SpawnProcess, _ParallelCommandInfo],
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parallel_cmds: List[_ParallelCommand],
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next_cmd_to_start_iter: Iterator[_ParallelCommand],
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parallel_group_status_queue: queue.Queue,
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worker_process_iterator: Iterator[SpawnProcess],
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current_dir: Path,
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dry: bool,
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) -> None:
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"""Listen on the status queue and process messages received from the worker processes.
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) -> List[Optional[_Completed]]:
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"""Listen on the status queue, and process messages received from the worker processes.
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Returns a list of the same length as the list of parallel commands: the entry at the
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index corresponding to a given command contains any _Completed method returned by that command,
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and the entries at indexes corresponding to commands that did not complete contain 'None'.
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cmd_infos: a list of info objects about the commands in the parallel group.
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proc_to_cmd_infos: a dictionary from Process objects to command info objects.
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parallel_group_status_queue: the status queue.
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worker_process_iterator: an iterator over the processes, some or all of which
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will already have been iterated over and started.
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parallel_cmds: the commands in the parallel group.
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next_cmd_to_start_iter: an iterator over parallel commands to start as others complete.
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parallel_group_status_queue: the status queue from worker processes to the main process.
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current_dir: the current directory.
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dry (bool): Perform a dry run and don't execute commands.
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"""
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status_table_not_yet_displayed = True
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while any(
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cmd_info.state.name in ("pending", "starting", "running")
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for cmd_info in cmd_infos
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):
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completed_messages: List[Optional[_Completed]] = [None for _ in parallel_cmds]
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while any(not cmd.state.is_final() for cmd in parallel_cmds):
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try:
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mess: Dict[str, Union[str, int]] = parallel_group_status_queue.get(
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timeout=_PARALLEL_GROUP_STATUS_INTERVAL * 20
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)
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mess = parallel_group_status_queue.get(timeout=_KEEPALIVE_MAX_LATENCY)
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except queue.Empty:
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# No more messages are being received: the whole group has hung
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for other_cmd_info in (
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c for c in cmd_infos if c.state.name in ("starting", "running")
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):
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other_cmd_info.change_state("hung")
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for other_cmd_info in (c for c in cmd_infos if c.state.name == "pending"):
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other_cmd_info.change_state("cancelled")
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_cancel_hung_group(parallel_cmds)
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break
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cmd_info = cmd_infos[cast(int, mess["cmd_index"])]
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if mess["mess_type"] in ("started", "keepalive"):
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cmd_info.last_keepalive_time = int(time())
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for other_cmd_info in (
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c for c in cmd_infos if c.state.name in ("starting", "running")
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):
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if (
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other_cmd_info.last_keepalive_time is not None
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and time() - other_cmd_info.last_keepalive_time
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> _PARALLEL_GROUP_STATUS_INTERVAL * 20
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):
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# a specific command has hung
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other_cmd_info.change_state("hung")
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if mess["mess_type"] == "started":
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cmd_info.change_state("running")
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cmd_info.running_os_cmd_index = cast(int, mess["os_cmd_index"])
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cmd_info.pid = cast(int, mess["pid"])
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if mess["mess_type"] == "completed":
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cmd_info.rc = cast(int, mess["rc"])
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if cmd_info.rc == 0:
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cmd_info.change_state("succeeded")
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cmd = parallel_cmds[mess.cmd_index]
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if isinstance(mess, (_Started, _KeepAlive)):
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cmd.last_keepalive_time = int(time())
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if isinstance(mess, _Started):
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cmd.notify_started(mess)
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elif isinstance(mess, _Completed):
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completed_messages[mess.cmd_index] = mess
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if mess.rc == 0:
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cmd.change_state("succeeded")
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if not dry:
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update_lockfile(current_dir, cmd_info.cmd)
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next_worker_process = next(worker_process_iterator, None)
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if next_worker_process is not None:
|
||||
_start_worker_process(next_worker_process, proc_to_cmd_infos)
|
||||
elif cmd_info.rc > 0:
|
||||
cmd_info.change_state("failed")
|
||||
update_lockfile(current_dir, cmd.config_command)
|
||||
_start_next_cmd(next_cmd_to_start_iter, parallel_group_status_queue)
|
||||
elif mess.rc > 0:
|
||||
cmd.change_state("failed")
|
||||
else:
|
||||
cmd_info.change_state("terminated")
|
||||
cmd_info.console_output = cast(str, mess["console_output"])
|
||||
cmd.change_state("terminated")
|
||||
|
||||
_check_for_hung_cmds(parallel_cmds)
|
||||
if any(
|
||||
c for c in cmd_infos if c.state.name in ("failed", "terminated", "hung")
|
||||
c for c in parallel_cmds if c.state.name in ("failed", "terminated", "hung")
|
||||
):
|
||||
# a command in the group hasn't succeeded, so terminate/cancel the rest
|
||||
for other_cmd_info in (c for c in cmd_infos if c.state.name == "running"):
|
||||
try:
|
||||
os.kill(cast(int, other_cmd_info.pid), SIGTERM)
|
||||
except ProcessLookupError:
|
||||
# the subprocess the main process is trying to kill could already
|
||||
# have completed, and the message from the worker process notifying
|
||||
# the main process about this could still be in the queue
|
||||
pass
|
||||
for other_cmd_info in (c for c in cmd_infos if c.state.name == "pending"):
|
||||
other_cmd_info.change_state("cancelled")
|
||||
if mess["mess_type"] != "keepalive" and _DISPLAY_STATUS_TABLE:
|
||||
_cancel_not_succeeded_group(parallel_cmds)
|
||||
|
||||
if not isinstance(mess, _KeepAlive) and _DISPLAY_STATUS_TABLE:
|
||||
if status_table_not_yet_displayed:
|
||||
status_table_not_yet_displayed = False
|
||||
else:
|
||||
# overwrite the existing status table
|
||||
print("\033[2K\033[F" * (4 + len(cmd_infos)))
|
||||
data = [[c.cmd_name, c.state_repr] for c in cmd_infos]
|
||||
print("\033[2K\033[F" * (4 + len(parallel_cmds)))
|
||||
data = [[c.name, c.state_repr] for c in parallel_cmds]
|
||||
header = ["Command", "Status"]
|
||||
msg.table(data, header=header)
|
||||
|
||||
# Occasionally when something has hung there may still be worker processes to tidy up
|
||||
for cmd in parallel_cmds:
|
||||
cmd.terminate_if_alive()
|
||||
|
||||
return completed_messages
|
||||
|
||||
|
||||
def _read_commands_from_config(
|
||||
config, cmd_names: List[str], current_dir: Path, dry: bool, temp_log_dir: Path
|
||||
) -> List[_ParallelCommand]:
|
||||
config_cmds = {cmd["name"]: cmd for cmd in config.get("commands", [])}
|
||||
for name in (n for n in config_cmds if n in cmd_names):
|
||||
check_deps(config_cmds[name], name, current_dir, dry)
|
||||
return [
|
||||
_ParallelCommand(config_cmds[name], index, dry, temp_log_dir)
|
||||
for index, name in enumerate(cmd_names)
|
||||
]
|
||||
|
||||
|
||||
def _is_cmd_to_rerun(
|
||||
parallel_cmd: _ParallelCommand, current_dir: Path, force: bool
|
||||
) -> bool:
|
||||
"""Determine whether this command should be rerun."""
|
||||
check_spacy_commit = check_bool_env_var(ENV_VARS.PROJECT_USE_GIT_VERSION)
|
||||
return (
|
||||
check_rerun(
|
||||
current_dir,
|
||||
parallel_cmd.config_command,
|
||||
check_spacy_commit=check_spacy_commit,
|
||||
)
|
||||
or force
|
||||
)
|
||||
|
||||
|
||||
def _start_next_cmd(
|
||||
next_cmd_to_start_iter: Iterator[_ParallelCommand],
|
||||
parallel_group_status_queue: queue.Queue,
|
||||
) -> bool:
|
||||
"""Start the next command in the parallel group, returning a boolean
|
||||
value to indicate whether there was a new command left to start.
|
||||
"""
|
||||
next_cmd = next(next_cmd_to_start_iter, None)
|
||||
if next_cmd is not None:
|
||||
next_cmd.start(parallel_group_status_queue)
|
||||
return next_cmd is not None
|
||||
|
||||
|
||||
def _cancel_not_succeeded_group(parallel_cmds: List[_ParallelCommand]) -> None:
|
||||
"""Terminate/cancel the remaining commands in a group where a command
|
||||
has not succeeded.
|
||||
"""
|
||||
for cmd in (c for c in parallel_cmds if c.state.name == "running"):
|
||||
cmd.change_state("terminating")
|
||||
try:
|
||||
os.kill(cast(int, cmd.pid), SIGTERM)
|
||||
except:
|
||||
# the subprocess the main process is trying to kill could already
|
||||
# have completed, and the message from the worker process notifying
|
||||
# the main process about this could still be in the queue.
|
||||
# Various errors would result depending on the OS.
|
||||
pass
|
||||
for cmd in (c for c in parallel_cmds if c.state.name == "pending"):
|
||||
cmd.change_state("cancelled")
|
||||
|
||||
|
||||
def _cancel_hung_group(parallel_cmds: List[_ParallelCommand]) -> None:
|
||||
"""Handle the situation where the whole group has stopped responding."""
|
||||
for cmd in (c for c in parallel_cmds if not c.state.is_final()):
|
||||
if cmd.state.name == "pending":
|
||||
cmd.change_state("cancelled")
|
||||
else:
|
||||
cmd.change_state("hung")
|
||||
|
||||
|
||||
def _check_for_hung_cmds(parallel_cmds: List[_ParallelCommand]) -> None:
|
||||
"""Check whether individual commands within the group have stopped responding
|
||||
and, if any are found, mark this on their status"""
|
||||
for cmd in (
|
||||
c
|
||||
for c in parallel_cmds
|
||||
if c.state.name in ("starting", "running", "terminating")
|
||||
):
|
||||
if (
|
||||
cmd.last_keepalive_time is not None
|
||||
and time() - cmd.last_keepalive_time > _KEEPALIVE_MAX_LATENCY
|
||||
):
|
||||
# a specific command has hung
|
||||
cmd.change_state("hung")
|
||||
|
||||
|
||||
def _print_divider(cmd_names: List[str], temp_log_dir: Path) -> None:
|
||||
divider_parallel_descriptor = parallel_descriptor = (
|
||||
"parallel[" + ", ".join(cmd_names) + "]"
|
||||
)
|
||||
if len(divider_parallel_descriptor) > _MAX_WIDTH_DIVIDER:
|
||||
divider_parallel_descriptor = (
|
||||
divider_parallel_descriptor[: (_MAX_WIDTH_DIVIDER - 3)] + "..."
|
||||
)
|
||||
msg.divider(divider_parallel_descriptor)
|
||||
if not _DISPLAY_STATUS_TABLE and len(parallel_descriptor) > _MAX_WIDTH_DIVIDER:
|
||||
# reprint the descriptor if it was too long and had to be cut short
|
||||
print(parallel_descriptor)
|
||||
msg.info("Temporary logs are being written to " + str(temp_log_dir))
|
||||
|
||||
|
||||
def _print_group_output(cmd_outputs: List[Tuple[str, str, Optional[_Completed]]]):
|
||||
for name, state_name, completed_message in cmd_outputs:
|
||||
if state_name == "cancelled":
|
||||
continue
|
||||
msg.divider(name)
|
||||
if state_name == "not rerun":
|
||||
msg.info(f"Skipping '{name}': nothing changed")
|
||||
if state_name == "hung":
|
||||
msg.fail("The process hung")
|
||||
elif completed_message is not None:
|
||||
print(completed_message.console_output)
|
||||
|
||||
|
||||
def _get_group_rc(completed_messages: List[Optional[_Completed]]) -> int:
|
||||
"""Derive an overall return code from the Completed messages for a parallel group."""
|
||||
set_rcs = [mess.rc for mess in completed_messages if mess is not None]
|
||||
if len(set_rcs) == 0: # no command in the group was rerun
|
||||
return 0
|
||||
max_rc = max(set_rcs)
|
||||
if max_rc > 0:
|
||||
return max_rc
|
||||
min_rc = min(set_rcs)
|
||||
if min_rc < 0:
|
||||
return min_rc
|
||||
return 0
|
||||
|
||||
|
||||
def _project_run_parallel_cmd(
|
||||
cmd_info: _ParallelCommandInfo,
|
||||
*,
|
||||
cmd_index: int,
|
||||
os_cmds: List[str],
|
||||
dry: bool,
|
||||
temp_log_dir: str,
|
||||
parallel_group_status_queue: Queue,
|
||||
log_path: Path,
|
||||
parallel_group_status_queue: queue.Queue,
|
||||
) -> None:
|
||||
"""Run a single spaCy projects command as a worker process.
|
||||
"""Run a single spaCy projects command as a worker process, communicating with the
|
||||
main process via queue messages.
|
||||
|
||||
Communicates with the main process via queue messages whose type is determined
|
||||
by the entry 'mess_type' and that are structured as dictionaries. Possible
|
||||
values of 'mess_type' are 'started', 'completed' and 'keepalive'. Each dictionary
|
||||
type contains different additional fields.
|
||||
|
||||
cmd_info: the info object for the command being run.
|
||||
cmd_index: the index of this command within the parallel group
|
||||
os_cmds: a list of the OS-level commands that make up this spaCy projects command.
|
||||
dry (bool): Perform a dry run and don't execute commands.
|
||||
temp_log_dir: the temporary directory to which to log.
|
||||
log_path: the temporary file path to which to log.
|
||||
parallel_group_status_queue: the queue via which to send status messages to the
|
||||
main process.
|
||||
"""
|
||||
# we can use the command name as a unique log filename because a parallel
|
||||
# group is not allowed to contain the same command more than once
|
||||
log_file_name = os.sep.join((temp_log_dir, cmd_info.cmd_name + ".log"))
|
||||
file_not_found = False
|
||||
# buffering=0: make sure output is not lost if a subprocess is terminated
|
||||
with open(log_file_name, "wb", buffering=0) as logfile:
|
||||
for os_cmd_index, os_cmd in enumerate(cmd_info.cmd["script"]):
|
||||
command = split_command(os_cmd)
|
||||
if len(command) and command[0] in ("python", "python3"):
|
||||
# -u: prevent buffering within Python
|
||||
command = [sys.executable, "-u", *command[1:]]
|
||||
elif len(command) and command[0].startswith("python3"): # e.g. python3.10
|
||||
command = [command[0], "-u", *command[1:]]
|
||||
elif len(command) and command[0] in ("pip", "pip3"):
|
||||
command = [sys.executable, "-m", "pip", *command[1:]]
|
||||
logfile.write(
|
||||
bytes(
|
||||
f"Running command: {join_command(command)}" + os.linesep,
|
||||
encoding="utf8",
|
||||
)
|
||||
)
|
||||
if not dry:
|
||||
try:
|
||||
sp = Popen(
|
||||
command,
|
||||
stdout=logfile,
|
||||
stderr=STDOUT,
|
||||
env=os.environ.copy(),
|
||||
encoding="utf8",
|
||||
)
|
||||
except FileNotFoundError:
|
||||
# Indicates the *command* wasn't found, it's an error before the command
|
||||
# is run.
|
||||
logfile.write(
|
||||
bytes(
|
||||
Errors.E970.format(
|
||||
str_command=" ".join(command),
|
||||
tool=command[0],
|
||||
),
|
||||
encoding="UTF-8",
|
||||
)
|
||||
)
|
||||
file_not_found = True
|
||||
break
|
||||
parallel_group_status_queue.put(
|
||||
{
|
||||
"mess_type": "started",
|
||||
"cmd_index": cmd_info.cmd_index,
|
||||
"os_cmd_index": os_cmd_index,
|
||||
"pid": sp.pid,
|
||||
}
|
||||
)
|
||||
while True:
|
||||
try:
|
||||
sp.wait(timeout=_PARALLEL_GROUP_STATUS_INTERVAL)
|
||||
except TimeoutExpired:
|
||||
pass
|
||||
if sp.returncode == None:
|
||||
parallel_group_status_queue.put(
|
||||
{
|
||||
"mess_type": "keepalive",
|
||||
"cmd_index": cmd_info.cmd_index,
|
||||
}
|
||||
)
|
||||
else:
|
||||
break
|
||||
with log_path.open("wb", buffering=0) as logfile:
|
||||
# The return code will be 0 if the group succeeded,
|
||||
# or the return code of the first failing item.
|
||||
return_code = _run_os_cmds(
|
||||
cmd_index,
|
||||
os_cmds,
|
||||
logfile,
|
||||
dry,
|
||||
parallel_group_status_queue,
|
||||
)
|
||||
|
||||
if sp.returncode != 0:
|
||||
if os.name == "nt":
|
||||
status = "Failed/terminated"
|
||||
elif sp.returncode > 0:
|
||||
status = "Failed"
|
||||
else:
|
||||
status = "Terminated"
|
||||
|
||||
logfile.write(
|
||||
bytes(
|
||||
os.linesep + f"{status} (rc={sp.returncode})" + os.linesep,
|
||||
encoding="UTF-8",
|
||||
)
|
||||
)
|
||||
break
|
||||
else: # dry run
|
||||
parallel_group_status_queue.put(
|
||||
{
|
||||
"mess_type": "started",
|
||||
"cmd_index": cmd_info.cmd_index,
|
||||
"os_cmd_index": os_cmd_index,
|
||||
"pid": -1,
|
||||
}
|
||||
)
|
||||
|
||||
with open(log_file_name, "r") as logfile:
|
||||
if file_not_found:
|
||||
rc = 1
|
||||
elif dry:
|
||||
rc = 0
|
||||
else:
|
||||
rc = sp.returncode
|
||||
with log_path.open("r") as logfile:
|
||||
parallel_group_status_queue.put(
|
||||
{
|
||||
"mess_type": "completed",
|
||||
"cmd_index": cmd_info.cmd_index,
|
||||
"rc": rc,
|
||||
"console_output": logfile.read(),
|
||||
}
|
||||
_Completed(
|
||||
cmd_index=cmd_index,
|
||||
rc=return_code,
|
||||
console_output=logfile.read(),
|
||||
)
|
||||
)
|
||||
|
||||
|
||||
def _start_worker_process(
|
||||
worker_process: SpawnProcess,
|
||||
proc_to_cmd_infos: Dict[SpawnProcess, _ParallelCommandInfo],
|
||||
) -> None:
|
||||
""" Start a worker process, changing the state of its info object.
|
||||
def _run_os_cmds(
|
||||
cmd_index: int,
|
||||
os_cmds: List[str],
|
||||
logfile: BinaryIO,
|
||||
dry: bool,
|
||||
parallel_group_status_queue: queue.Queue,
|
||||
) -> int:
|
||||
"""Run the OS-level commands that make up a spaCy projects command in sequence,
|
||||
stopping if any command returns a non-zero return code and returning the
|
||||
return code of the last executed command.
|
||||
|
||||
worker_process: the worker process to start.
|
||||
proc_to_cmd_infos: a dictionary from worker processes to
|
||||
the info objects that describe them.
|
||||
cmd_index: the index of this command within the parallel group
|
||||
os_cmds: a list of the OS-level commands that make up this spaCy projects command.
|
||||
logfile: the file to which both this code and the command itself should log.
|
||||
dry (bool): Perform a dry run and don't execute commands.
|
||||
parallel_group_status_queue: the queue via which to send status messages to the
|
||||
main process.
|
||||
"""
|
||||
cmd_info = proc_to_cmd_infos[worker_process]
|
||||
if cmd_info.state.name == "pending":
|
||||
cmd_info.change_state("starting")
|
||||
cmd_info.last_keepalive_time = int(time())
|
||||
worker_process.start()
|
||||
for os_cmd_index, os_cmd in enumerate(os_cmds):
|
||||
split_os_cmd = _get_split_os_cmd(os_cmd)
|
||||
logfile.write(
|
||||
bytes(
|
||||
f"Running command: {join_command(split_os_cmd)}" + os.linesep,
|
||||
encoding="utf8",
|
||||
)
|
||||
)
|
||||
if dry:
|
||||
parallel_group_status_queue.put(
|
||||
_Started(
|
||||
cmd_index=cmd_index,
|
||||
os_cmd_index=os_cmd_index,
|
||||
pid=-1,
|
||||
)
|
||||
)
|
||||
else:
|
||||
rc = _run_split_os_cmd(
|
||||
cmd_index,
|
||||
split_os_cmd,
|
||||
os_cmd_index,
|
||||
logfile,
|
||||
parallel_group_status_queue,
|
||||
)
|
||||
if rc != 0:
|
||||
return rc
|
||||
return 0
|
||||
|
||||
|
||||
def _get_split_os_cmd(os_cmd: str) -> List[str]:
|
||||
"""Change the OS-level command to ensure the right Python or Pip instance
|
||||
is executed and to prevent buffering. Modelled partially on
|
||||
'run_commands' in 'run.py'"""
|
||||
command = split_command(os_cmd)
|
||||
if len(command) and command[0] in ("python", "python3"):
|
||||
# -u: prevent buffering within Python
|
||||
command = [sys.executable, "-u", *command[1:]]
|
||||
elif len(command) and command[0].startswith("python3"): # e.g. python3.10
|
||||
command = [command[0], "-u", *command[1:]]
|
||||
elif len(command) and command[0] in ("pip", "pip3"):
|
||||
command = [sys.executable, "-m", "pip", *command[1:]]
|
||||
return command
|
||||
|
||||
|
||||
def _run_split_os_cmd(
|
||||
cmd_index: int,
|
||||
split_os_cmd: List[str],
|
||||
os_cmd_index: int,
|
||||
logfile: BinaryIO,
|
||||
parallel_group_status_queue: queue.Queue,
|
||||
) -> int:
|
||||
"""Run an OS-level command.
|
||||
|
||||
cmd_index: the index of this spaCy projects command within the parallel group.
|
||||
split_os_cmd: the OS-level command to execute.
|
||||
os_cmd_index: the index of this OS-level command within the spaCy projects command.
|
||||
logfile: the file to which both this code and the command itself should log.
|
||||
parallel_group_status_queue: the queue via which to send status messages to the
|
||||
main process.
|
||||
"""
|
||||
|
||||
try:
|
||||
sp = Popen(
|
||||
split_os_cmd,
|
||||
stdout=logfile,
|
||||
stderr=STDOUT,
|
||||
env=os.environ.copy(),
|
||||
encoding="utf8",
|
||||
)
|
||||
except FileNotFoundError:
|
||||
# Indicates the *command* wasn't found, it's an error before the command
|
||||
# is run.
|
||||
logfile.write(
|
||||
bytes(
|
||||
Errors.E970.format(
|
||||
str_command=" ".join(split_os_cmd),
|
||||
tool=split_os_cmd[0],
|
||||
),
|
||||
encoding="UTF-8",
|
||||
)
|
||||
)
|
||||
return 1 # non-zero return code to halt execution
|
||||
|
||||
parallel_group_status_queue.put(
|
||||
_Started(
|
||||
cmd_index=cmd_index,
|
||||
os_cmd_index=os_cmd_index,
|
||||
pid=sp.pid,
|
||||
)
|
||||
)
|
||||
|
||||
while sp.returncode is None:
|
||||
try:
|
||||
sp.wait(timeout=_KEEPALIVE_INTERVAL)
|
||||
except TimeoutExpired:
|
||||
pass
|
||||
if sp.returncode is None:
|
||||
parallel_group_status_queue.put(
|
||||
_KeepAlive(
|
||||
cmd_index=cmd_index,
|
||||
)
|
||||
)
|
||||
elif sp.returncode != 0:
|
||||
if os.name == "nt":
|
||||
status = "Failed/terminated"
|
||||
elif sp.returncode > 0:
|
||||
status = "Failed"
|
||||
else:
|
||||
status = "Terminated"
|
||||
logfile.write(
|
||||
bytes(
|
||||
os.linesep + f"{status} (rc={sp.returncode})" + os.linesep,
|
||||
encoding="UTF-8",
|
||||
)
|
||||
)
|
||||
return sp.returncode
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user