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import os
import yaml
import time
from signal import SIGUSR1
admin("space = box.schema.space.create('tweedledum', { id = 0 })")
admin("index = space:create_index('primary', { type = 'hash' })")
print """#
# A test case for: http://bugs.launchpad.net/bugs/686411
# Check that 'box.snapshot()' does not overwrite a snapshot
# file that already exists. Verify also that any other
# error that happens when saving snapshot is propagated
# to the caller.
"""
admin("space:insert{1, 'first tuple'}")
admin("box.snapshot()")
# In absence of data modifications, two consecutive
# 'box.snapshot()' statements will try to write
# into the same file, since file name is based
# on LSN.
# Don't allow to overwrite snapshots.
admin("box.snapshot()")
#
# Increment LSN
admin("space:insert{2, 'second tuple'}")
#
# Check for other errors, e.g. "Permission denied".
print "# Make 'var' directory read-only."
data_dir = os.path.join(server.vardir, server.name)
os.chmod(data_dir, 0555)
admin("box.snapshot()")
admin("box.error.last().errno")
# cleanup
os.chmod(data_dir, 0755)
admin("space:delete{1}")
admin("space:delete{2}")
print """#
# A test case for http://bugs.launchpad.net/bugs/727174
# "tarantool_box crashes when saving snapshot on SIGUSR1"
#"""
print """
# Increment the lsn number, to make sure there is no such snapshot yet
#"""
admin("space:insert{1, 'Test tuple'}")
pid = int(yaml.load(admin("box.info.pid", silent=True))[0])
lsn = int(yaml.load(admin("box.info.server.lsn", silent=True))[0])
snapshot = str(lsn).zfill(20) + ".snap"
snapshot = os.path.join(os.path.join(server.vardir, server.name), snapshot)
iteration = 0
MAX_ITERATIONS = 100
while not os.access(snapshot, os.F_OK) and iteration < MAX_ITERATIONS:
if iteration % 10 == 0:
os.kill(pid, SIGUSR1)
time.sleep(0.1)
iteration = iteration + 1
if iteration == 0 or iteration >= MAX_ITERATIONS:
print "Snapshot is missing."
else:
print "Snapshot exists."
admin("space:drop()")
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