19015773527

Committed 02 Nov 2025 05:33PM UTC coverage: 17.872% (-62.4%) from 80.3%

Build # 19015773527

Build Type

Pull #22816

github

Committed by

web-flow

Commit Message

Merge a12d75757 into 6c024e162

Pull Request Pull Request #22816: Update Pants internal Python to 3.14

Run Details

4 of 5 new or added lines in 3 files covered. (80.0%)

28452 existing lines in 683 files now uncovered.

9831 of 55007 relevant lines covered (17.87%)

0.18 hits per line

Source File
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39.13

/src/python/pants/pantsd/lock.py

# Copyright 2016 Pants project contributors (see CONTRIBUTORS.md).
# Licensed under the Apache License, Version 2.0 (see LICENSE).

import errno
import logging
import os
import sys

import psutil
from fasteners import InterProcessLock

from pants.util.dirutil import safe_delete

logger = logging.getLogger(__name__)


def print_to_stderr(message):
    print(message, file=sys.stderr)


class OwnerPrintingInterProcessFileLock(InterProcessLock):
    @property
    def message_path(self):
        return f"{self.path_str}.lock_message"

    @property
    def path_str(self):
        return self.path.decode()

    @property
    def missing_message_output(self):
        return f"Pid {os.getpid()} waiting for a file lock ({self.path_str}), but there was no message at {self.message_path} indicating who is holding it."

    def acquire(self, message_fn=print_to_stderr, **kwargs):
        logger.debug(f"acquiring lock: {self!r}")
        super().acquire(blocking=False)
        if not self.acquired:
            try:
                with open(self.message_path, "rb") as f:
                    message = f.read().decode("utf-8", "replace")
                    output = f"PID {os.getpid()} waiting for a file lock ({self.path_str}) held by: {message}"
            except OSError as e:
                if e.errno == errno.ENOENT:
                    output = self.missing_message_output
                else:
                    raise
            message_fn(output)
            super().acquire(**kwargs)

        if self.acquired:
            current_process = psutil.Process()
            cmd_line = " ".join(current_process.cmdline())
            message = f"{current_process.pid} ({cmd_line})"
            with open(self.message_path, "wb") as f:
                f.write(message.encode())

        return self.acquired

    def release(self):
        logger.debug(f"releasing lock: {self!r}")
        if self.acquired:
            safe_delete(self.message_path)
        return super().release()

1	# Copyright 2016 Pants project contributors (see CONTRIBUTORS.md).
2	# Licensed under the Apache License, Version 2.0 (see LICENSE).
3
4	import errno	1✔
5	import logging	1✔
6	import os	1✔
7	import sys	1✔
8
9	import psutil	1✔
10	from fasteners import InterProcessLock	1✔
11
12	from pants.util.dirutil import safe_delete	1✔
13
14	logger = logging.getLogger(__name__)	1✔
15
16
17	def print_to_stderr(message):	1✔
UNCOV 18	print(message, file=sys.stderr)	×
19
20
21	class OwnerPrintingInterProcessFileLock(InterProcessLock):	1✔
22	@property	1✔
23	def message_path(self):	1✔
UNCOV 24	return f"{self.path_str}.lock_message"	×
25
26	@property	1✔
27	def path_str(self):	1✔
UNCOV 28	return self.path.decode()	×
29
30	@property	1✔
31	def missing_message_output(self):	1✔
UNCOV 32	return f"Pid {os.getpid()} waiting for a file lock ({self.path_str}), but there was no message at {self.message_path} indicating who is holding it."	×
33
34	def acquire(self, message_fn=print_to_stderr, **kwargs):	1✔
UNCOV 35	logger.debug(f"acquiring lock: {self!r}")	×
UNCOV 36	super().acquire(blocking=False)	×
UNCOV 37	if not self.acquired:	×
UNCOV 38	try:	×
UNCOV 39	with open(self.message_path, "rb") as f:	×
UNCOV 40	message = f.read().decode("utf-8", "replace")	×
UNCOV 41	output = f"PID {os.getpid()} waiting for a file lock ({self.path_str}) held by: {message}"	×
UNCOV 42	except OSError as e:	×
UNCOV 43	if e.errno == errno.ENOENT:	×
UNCOV 44	output = self.missing_message_output	×
45	else:
46	raise	×
UNCOV 47	message_fn(output)	×
UNCOV 48	super().acquire(**kwargs)	×
49
UNCOV 50	if self.acquired:	×
UNCOV 51	current_process = psutil.Process()	×
UNCOV 52	cmd_line = " ".join(current_process.cmdline())	×
UNCOV 53	message = f"{current_process.pid} ({cmd_line})"	×
UNCOV 54	with open(self.message_path, "wb") as f:	×
UNCOV 55	f.write(message.encode())	×
56
UNCOV 57	return self.acquired	×
58
59	def release(self):	1✔
UNCOV 60	logger.debug(f"releasing lock: {self!r}")	×
UNCOV 61	if self.acquired:	×
UNCOV 62	safe_delete(self.message_path)	×
UNCOV 63	return super().release()	×

pantsbuild / pants / 19015773527

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