21803785359

Committed 08 Feb 2026 07:13PM UTC coverage: 43.3% (-37.0%) from 80.277%

Build # 21803785359

Build Type

Pull #23085

github

Committed by

web-flow

Commit Message

Merge 7c1cd926d into 40389cc58

Pull Request Pull Request #23085: A helper method for indexing paths by source root

Run Details

2 of 6 new or added lines in 1 file covered. (33.33%)

17114 existing lines in 539 files now uncovered.

26075 of 60219 relevant lines covered (43.3%)

0.43 hits per line

Source File
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73.91

/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✔
24	return f"{self.path_str}.lock_message"	1✔
25
26	@property	1✔
27	def path_str(self):	1✔
28	return self.path.decode()	1✔
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✔
35	logger.debug(f"acquiring lock: {self!r}")	1✔
36	super().acquire(blocking=False)	1✔
37	if not self.acquired:	1✔
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
50	if self.acquired:	1✔
51	current_process = psutil.Process()	1✔
52	cmd_line = " ".join(current_process.cmdline())	1✔
53	message = f"{current_process.pid} ({cmd_line})"	1✔
54	with open(self.message_path, "wb") as f:	1✔
55	f.write(message.encode())	1✔
56
57	return self.acquired	1✔
58
59	def release(self):	1✔
60	logger.debug(f"releasing lock: {self!r}")	1✔
61	if self.acquired:	1✔
62	safe_delete(self.message_path)	1✔
63	return super().release()	1✔

pantsbuild / pants / 21803785359

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