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Create a symlink to the latest log directory. #659

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Create a symlink to the latest log directory. #659

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16c015f
Create a symlink to the latest log directory.
yoneken Aug 15, 2015
c1433b5
improve patch
dirk-thomas Sep 17, 2015
c4464b0
Merge pull request #1 from dirk-thomas/patch-1
yoneken Sep 17, 2015
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18 changes: 18 additions & 0 deletions tools/rosgraph/src/rosgraph/roslogging.py
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Original file line number Diff line number Diff line change
Expand Up @@ -45,6 +45,16 @@

class LoggingException: pass

def renew_latest_logdir(logfile_dir):
log_dir = os.path.dirname(logfile_dir)
latest_dir = os.path.join(log_dir, 'latest')
if os.path.lexists(latest_dir):
if not os.path.islink(latest_dir):
return False
os.remove(latest_dir)
os.symlink(logfile_dir, latest_dir)
return True

def configure_logging(logname, level=logging.INFO, filename=None, env=None):
"""
Configure Python logging package to send log files to ROS-specific log directory
Expand Down Expand Up @@ -78,6 +88,14 @@ def configure_logging(logname, level=logging.INFO, filename=None, env=None):
elif os.path.isfile(logfile_dir):
raise LoggingException("Cannot save log files: file [%s] is in the way"%logfile_dir)

if sys.platform not in ['win32']:
try:
success = renew_latest_logdir(logfile_dir)
if not success:
sys.stderr.write("INFO: cannot create a symlink to latest log directory\n")
except OSError as e:
sys.stderr.write("INFO: cannot create a symlink to latest log directory: %s\n" % e)

if 'ROS_PYTHON_LOG_CONFIG_FILE' in os.environ:
config_file = os.environ['ROS_PYTHON_LOG_CONFIG_FILE']
else:
Expand Down