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#!/usr/bin/python
import sys, re, os, itertools
class Machine:
"""
Represents the current state of a machine. Possible values are:
TESTING currently running a test
REBOOTING currently rebooting
BROKEN busted somehow (e.g. reboot timed out)
OTHER none of the above
The implementation is basically that of a state machine. From an
external point of view the only relevant attributes are:
details text description of the current status
test_count number of tests run
"""
def __init__(self):
self.state = "OTHER"
self.details = "Running"
self.test_name = ""
self.test_count = 0
def process_line(self, line):
self.handlers[self.state](self, line)
def _OTHER_handler(self, line):
match = self.job_start.match(line)
if match and match.group(2) != "----":
self.state = "TESTING"
self.tab_level = len(match.group(1))
self.test_name = match.group(2)
self.test_status = "GOOD"
self.details = "Running %s" % self.test_name
return
match = self.reboot_start.match(line)
if match:
self.boot_status = match.group(1)
if self.worse_status("GOOD", self.boot_status) == "GOOD":
self.state = "REBOOTING"
self.details = "Rebooting"
else:
self.state = "BROKEN"
self.details = "Reboot failed - machine broken"
return
def _TESTING_handler(self, line):
match = self.job_status.match(line)
if match:
if len(match.group(1)) != self.tab_level + 1:
return # we don't care about subgroups
if self.test_name != match.group(3):
return # we don't care about other tests
self.test_status = self.worse_status(self.test_status,
match.group(2))
self.details = "Running %s: %s" % (self.test_name,
match.group(4))
return
match = self.job_end.match(line)
if match:
if len(match.group(1)) != self.tab_level:
return # we don't care about subgroups
if self.test_name != match.group(3):
raise ValueError('Group START and END name mismatch')
self.state = "OTHER"
self.test_status = self.worse_status(self.test_status,
match.group(2))
self.test_name = ""
del self.test_status
self.details = "Running"
self.test_count += 1
return
def _REBOOTING_handler(self, line):
match = self.reboot_done.match(line)
if match:
status = self.worse_status(self.boot_status,
match.group(1))
del self.boot_status
if status == "GOOD":
self.state = "OTHER"
self.details = "Running"
else:
self.state = "BROKEN"
self.details = "Reboot failed - machine broken"
return
def _BROKEN_handler(self, line):
pass # just do nothing - we're broken and staying broken
handlers = {"OTHER": _OTHER_handler,
"TESTING": _TESTING_handler,
"REBOOTING": _REBOOTING_handler,
"BROKEN": _BROKEN_handler}
status_list = ["GOOD", "WARN", "FAIL", "ABORT", "ERROR"]
order_dict = {None: -1}
order_dict.update((status, i)
for i, status in enumerate(status_list))
job_start = re.compile(r"^(\t*)START\t----\t([^\t]+).*$")
job_status = re.compile(r"^(\t*)(%s)\t([^\t]+)\t(?:[^\t]+).*\t([^\t]+)$" %
"|".join(status_list))
job_end = re.compile(r"^(\t*)END (%s)\t----\t([^\t]+).*$" %
"|".join(status_list))
reboot_start = re.compile(r"^\t?(%s)\t[^\t]+\treboot\.start.*$" %
"|".join(status_list))
reboot_done = re.compile(r"^\t?(%s)\t[^\t]+\treboot\.verify.*$" %
"|".join(status_list))
@classmethod
def worse_status(cls, old_status, new_status):
if cls.order_dict[new_status] > cls.order_dict[old_status]:
return new_status
else:
return old_status
def parse_status(status_log):
"""\
Parse the status from a single status log.
Do not use with status logs from multi-machine tests.
"""
parser = Machine()
for line in file(status_log):
parser.process_line(line)
result = {
"status": parser.details,
"test_on": parser.test_name,
"test_num_complete": parser.test_count
}
return result
def _file_iterator(filename):
"""\
Return an iterator over file(filename), or an empty iterator
if the file does not exist.
"""
if os.path.exists(filename):
return iter(file(filename))
else:
return ()
def parse_machine_status(root_path, name):
"""Parse the status for one machine (of a multi-machine test)"""
general_log = _file_iterator(os.path.join(root_path, "status.log"))
machine_log = _file_iterator(os.path.join(root_path, name, "status.log"))
timestamp_regex = re.compile("\ttimestamp=(\d+)")
# collect all the lines from both the root & machine-specific log
lines = []
timestamp = 0
for line in itertools.chain(general_log, machine_log):
timestamp_match = timestamp_regex.search(line)
# if the log line has a timestamp, use it
# otherwise, just use the timestamp from the previous line
if timestamp_match:
timestamp = int(timestamp_match.group(1))
lines.append((timestamp, line))
lines.sort() # this will sort the lines by timestamp
# now actually run the lines through the parser
parser = Machine()
for timestamp, line in lines:
parser.process_line(line)
return {
"status": parser.details,
"test_on": parser.test_name,
"test_num_complete": parser.test_count
}
def parse_multimachine_status(root_path, machine_names):
"""Parse the status for a set of machines."""
results = {}
for name in machine_names:
results[name] = parse_machine_status(root_path, name)
return results
if __name__ == "__main__":
args = sys.argv[1:]
if len(args) != 1:
print "USAGE: status.py status_log"
sys.exit(1)
print parse_status(args[0])
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