Revision 0d4a2b733070a1bd52f981313f9e17f126701407 authored by Yi Wu on 04 August 2017, 20:09:56 UTC, committed by Facebook Github Bot on 04 August 2017, 20:12:07 UTC
Summary: The FsyncFiles background job call Fsync() periodically for blob files. However it can access WritableFileWriter concurrently with a Put() or Write(). And WritableFileWriter does not support concurrent access. It will lead to WritableFileWriter buffer being flush with same content twice, and blob file end up corrupted. Fixing by simply let FsyncFiles hold write_mutex_. Closes https://github.com/facebook/rocksdb/pull/2685 Differential Revision: D5561908 Pulled By: yiwu-arbug fbshipit-source-id: f0bb5bcab0e05694e053b8c49eab43640721e872
1 parent 627c9f1
util.py
"""
This module keeps commonly used components.
"""
from __future__ import absolute_import
from __future__ import division
from __future__ import print_function
from __future__ import unicode_literals
import subprocess
import os
import time
class ColorString:
""" Generate colorful strings on terminal """
HEADER = '\033[95m'
BLUE = '\033[94m'
GREEN = '\033[92m'
WARNING = '\033[93m'
FAIL = '\033[91m'
ENDC = '\033[0m'
@staticmethod
def _make_color_str(text, color):
return "".join([color, text.encode('utf-8'), ColorString.ENDC])
@staticmethod
def ok(text):
if ColorString.is_disabled:
return text
return ColorString._make_color_str(text, ColorString.GREEN)
@staticmethod
def info(text):
if ColorString.is_disabled:
return text
return ColorString._make_color_str(text, ColorString.BLUE)
@staticmethod
def header(text):
if ColorString.is_disabled:
return text
return ColorString._make_color_str(text, ColorString.HEADER)
@staticmethod
def error(text):
if ColorString.is_disabled:
return text
return ColorString._make_color_str(text, ColorString.FAIL)
@staticmethod
def warning(text):
if ColorString.is_disabled:
return text
return ColorString._make_color_str(text, ColorString.WARNING)
is_disabled = False
def run_shell_command(shell_cmd, cmd_dir=None):
""" Run a single shell command.
@returns a tuple of shell command return code, stdout, stderr """
if cmd_dir is not None and not os.path.exists(cmd_dir):
run_shell_command("mkdir -p %s" % cmd_dir)
start = time.time()
print("\t>>> Running: " + shell_cmd)
p = subprocess.Popen(shell_cmd,
shell=True,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
cwd=cmd_dir)
stdout, stderr = p.communicate()
end = time.time()
# Report time if we spent more than 5 minutes executing a command
execution_time = end - start
if execution_time > (60 * 5):
mins = (execution_time / 60)
secs = (execution_time % 60)
print("\t>time spent: %d minutes %d seconds" % (mins, secs))
return p.returncode, stdout, stderr
def run_shell_commands(shell_cmds, cmd_dir=None, verbose=False):
""" Execute a sequence of shell commands, which is equivalent to
running `cmd1 && cmd2 && cmd3`
@returns boolean indication if all commands succeeds.
"""
if cmd_dir:
print("\t=== Set current working directory => %s" % cmd_dir)
for shell_cmd in shell_cmds:
ret_code, stdout, stderr = run_shell_command(shell_cmd, cmd_dir)
if stdout:
if verbose or ret_code != 0:
print(ColorString.info("stdout: \n"), stdout)
if stderr:
# contents in stderr is not necessarily to be error messages.
if verbose or ret_code != 0:
print(ColorString.error("stderr: \n"), stderr)
if ret_code != 0:
return False
return True
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