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ldb_test.py
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ldb_test.py
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import os
import glob
import os.path
import shutil
import subprocess
import time
import unittest
import tempfile
import re
def my_check_output(*popenargs, **kwargs):
"""
If we had python 2.7, we should simply use subprocess.check_output.
This is a stop-gap solution for python 2.6
"""
if 'stdout' in kwargs:
raise ValueError('stdout argument not allowed, it will be overridden.')
process = subprocess.Popen(stderr=subprocess.PIPE, stdout=subprocess.PIPE,
*popenargs, **kwargs)
output, unused_err = process.communicate()
retcode = process.poll()
if retcode:
cmd = kwargs.get("args")
if cmd is None:
cmd = popenargs[0]
raise Exception("Exit code is not 0. It is %d. Command: %s" %
(retcode, cmd))
return output
def run_err_null(cmd):
return os.system(cmd + " 2>/dev/null ")
class LDBTestCase(unittest.TestCase):
def setUp(self):
self.TMP_DIR = tempfile.mkdtemp(prefix="ldb_test_")
self.DB_NAME = "testdb"
def tearDown(self):
assert(self.TMP_DIR.strip() != "/"
and self.TMP_DIR.strip() != "/tmp"
and self.TMP_DIR.strip() != "/tmp/") #Just some paranoia
shutil.rmtree(self.TMP_DIR)
def dbParam(self, dbName):
return "--db=%s" % os.path.join(self.TMP_DIR, dbName)
def assertRunOKFull(self, params, expectedOutput, unexpected=False,
isPattern=False):
"""
All command-line params must be specified.
Allows full flexibility in testing; for example: missing db param.
"""
output = my_check_output("./ldb %s |grep -v \"Created bg thread\"" %
params, shell=True)
if not unexpected:
if isPattern:
self.assertNotEqual(expectedOutput.search(output.strip()),
None)
else:
self.assertEqual(output.strip(), expectedOutput.strip())
else:
if isPattern:
self.assertEqual(expectedOutput.search(output.strip()), None)
else:
self.assertNotEqual(output.strip(), expectedOutput.strip())
def assertRunFAILFull(self, params):
"""
All command-line params must be specified.
Allows full flexibility in testing; for example: missing db param.
"""
try:
my_check_output("./ldb %s >/dev/null 2>&1 |grep -v \"Created bg \
thread\"" % params, shell=True)
except Exception, e:
return
self.fail(
"Exception should have been raised for command with params: %s" %
params)
def assertRunOK(self, params, expectedOutput, unexpected=False):
"""
Uses the default test db.
"""
self.assertRunOKFull("%s %s" % (self.dbParam(self.DB_NAME), params),
expectedOutput, unexpected)
def assertRunFAIL(self, params):
"""
Uses the default test db.
"""
self.assertRunFAILFull("%s %s" % (self.dbParam(self.DB_NAME), params))
def testSimpleStringPutGet(self):
print "Running testSimpleStringPutGet..."
self.assertRunFAIL("put x1 y1")
self.assertRunOK("put --create_if_missing x1 y1", "OK")
self.assertRunOK("get x1", "y1")
self.assertRunFAIL("get x2")
self.assertRunOK("put x2 y2", "OK")
self.assertRunOK("get x1", "y1")
self.assertRunOK("get x2", "y2")
self.assertRunFAIL("get x3")
self.assertRunOK("scan --from=x1 --to=z", "x1 : y1\nx2 : y2")
self.assertRunOK("put x3 y3", "OK")
self.assertRunOK("scan --from=x1 --to=z", "x1 : y1\nx2 : y2\nx3 : y3")
self.assertRunOK("scan", "x1 : y1\nx2 : y2\nx3 : y3")
self.assertRunOK("scan --from=x", "x1 : y1\nx2 : y2\nx3 : y3")
self.assertRunOK("scan --to=x2", "x1 : y1")
self.assertRunOK("scan --from=x1 --to=z --max_keys=1", "x1 : y1")
self.assertRunOK("scan --from=x1 --to=z --max_keys=2",
"x1 : y1\nx2 : y2")
self.assertRunOK("scan --from=x1 --to=z --max_keys=3",
"x1 : y1\nx2 : y2\nx3 : y3")
self.assertRunOK("scan --from=x1 --to=z --max_keys=4",
"x1 : y1\nx2 : y2\nx3 : y3")
self.assertRunOK("scan --from=x1 --to=x2", "x1 : y1")
self.assertRunOK("scan --from=x2 --to=x4", "x2 : y2\nx3 : y3")
self.assertRunFAIL("scan --from=x4 --to=z") # No results => FAIL
self.assertRunFAIL("scan --from=x1 --to=z --max_keys=foo")
self.assertRunOK("scan", "x1 : y1\nx2 : y2\nx3 : y3")
self.assertRunOK("delete x1", "OK")
self.assertRunOK("scan", "x2 : y2\nx3 : y3")
self.assertRunOK("delete NonExistentKey", "OK")
# It is weird that GET and SCAN raise exception for
# non-existent key, while delete does not
self.assertRunOK("checkconsistency", "OK")
def dumpDb(self, params, dumpFile):
return 0 == run_err_null("./ldb dump %s > %s" % (params, dumpFile))
def loadDb(self, params, dumpFile):
return 0 == run_err_null("cat %s | ./ldb load %s" % (dumpFile, params))
def testStringBatchPut(self):
print "Running testStringBatchPut..."
self.assertRunOK("batchput x1 y1 --create_if_missing", "OK")
self.assertRunOK("scan", "x1 : y1")
self.assertRunOK("batchput x2 y2 x3 y3 \"x4 abc\" \"y4 xyz\"", "OK")
self.assertRunOK("scan", "x1 : y1\nx2 : y2\nx3 : y3\nx4 abc : y4 xyz")
self.assertRunFAIL("batchput")
self.assertRunFAIL("batchput k1")
self.assertRunFAIL("batchput k1 v1 k2")
def testCountDelimDump(self):
print "Running testCountDelimDump..."
self.assertRunOK("batchput x.1 x1 --create_if_missing", "OK")
self.assertRunOK("batchput y.abc abc y.2 2 z.13c pqr", "OK")
self.assertRunOK("dump --count_delim", "x => count:1\tsize:5\ny => count:2\tsize:12\nz => count:1\tsize:8")
self.assertRunOK("dump --count_delim=\".\"", "x => count:1\tsize:5\ny => count:2\tsize:12\nz => count:1\tsize:8")
self.assertRunOK("batchput x,2 x2 x,abc xabc", "OK")
self.assertRunOK("dump --count_delim=\",\"", "x => count:2\tsize:14\nx.1 => count:1\tsize:5\ny.2 => count:1\tsize:4\ny.abc => count:1\tsize:8\nz.13c => count:1\tsize:8")
def testCountDelimIDump(self):
print "Running testCountDelimIDump..."
self.assertRunOK("batchput x.1 x1 --create_if_missing", "OK")
self.assertRunOK("batchput y.abc abc y.2 2 z.13c pqr", "OK")
self.assertRunOK("dump --count_delim", "x => count:1\tsize:5\ny => count:2\tsize:12\nz => count:1\tsize:8")
self.assertRunOK("dump --count_delim=\".\"", "x => count:1\tsize:5\ny => count:2\tsize:12\nz => count:1\tsize:8")
self.assertRunOK("batchput x,2 x2 x,abc xabc", "OK")
self.assertRunOK("dump --count_delim=\",\"", "x => count:2\tsize:14\nx.1 => count:1\tsize:5\ny.2 => count:1\tsize:4\ny.abc => count:1\tsize:8\nz.13c => count:1\tsize:8")
def testInvalidCmdLines(self):
print "Running testInvalidCmdLines..."
# db not specified
self.assertRunFAILFull("put 0x6133 0x6233 --hex --create_if_missing")
# No param called he
self.assertRunFAIL("put 0x6133 0x6233 --he --create_if_missing")
# max_keys is not applicable for put
self.assertRunFAIL("put 0x6133 0x6233 --max_keys=1 --create_if_missing")
# hex has invalid boolean value
def testHexPutGet(self):
print "Running testHexPutGet..."
self.assertRunOK("put a1 b1 --create_if_missing", "OK")
self.assertRunOK("scan", "a1 : b1")
self.assertRunOK("scan --hex", "0x6131 : 0x6231")
self.assertRunFAIL("put --hex 6132 6232")
self.assertRunOK("put --hex 0x6132 0x6232", "OK")
self.assertRunOK("scan --hex", "0x6131 : 0x6231\n0x6132 : 0x6232")
self.assertRunOK("scan", "a1 : b1\na2 : b2")
self.assertRunOK("get a1", "b1")
self.assertRunOK("get --hex 0x6131", "0x6231")
self.assertRunOK("get a2", "b2")
self.assertRunOK("get --hex 0x6132", "0x6232")
self.assertRunOK("get --key_hex 0x6132", "b2")
self.assertRunOK("get --key_hex --value_hex 0x6132", "0x6232")
self.assertRunOK("get --value_hex a2", "0x6232")
self.assertRunOK("scan --key_hex --value_hex",
"0x6131 : 0x6231\n0x6132 : 0x6232")
self.assertRunOK("scan --hex --from=0x6131 --to=0x6133",
"0x6131 : 0x6231\n0x6132 : 0x6232")
self.assertRunOK("scan --hex --from=0x6131 --to=0x6132",
"0x6131 : 0x6231")
self.assertRunOK("scan --key_hex", "0x6131 : b1\n0x6132 : b2")
self.assertRunOK("scan --value_hex", "a1 : 0x6231\na2 : 0x6232")
self.assertRunOK("batchput --hex 0x6133 0x6233 0x6134 0x6234", "OK")
self.assertRunOK("scan", "a1 : b1\na2 : b2\na3 : b3\na4 : b4")
self.assertRunOK("delete --hex 0x6133", "OK")
self.assertRunOK("scan", "a1 : b1\na2 : b2\na4 : b4")
self.assertRunOK("checkconsistency", "OK")
def testTtlPutGet(self):
print "Running testTtlPutGet..."
self.assertRunOK("put a1 b1 --ttl --create_if_missing", "OK")
self.assertRunOK("scan --hex", "0x6131 : 0x6231", True)
self.assertRunOK("dump --ttl ", "a1 ==> b1", True)
self.assertRunOK("dump --hex --ttl ",
"0x6131 ==> 0x6231\nKeys in range: 1")
self.assertRunOK("scan --hex --ttl", "0x6131 : 0x6231")
self.assertRunOK("get --value_hex a1", "0x6231", True)
self.assertRunOK("get --ttl a1", "b1")
self.assertRunOK("put a3 b3 --create_if_missing", "OK")
# fails because timstamp's length is greater than value's
self.assertRunFAIL("get --ttl a3")
self.assertRunOK("checkconsistency", "OK")
def testInvalidCmdLines(self):
print "Running testInvalidCmdLines..."
# db not specified
self.assertRunFAILFull("put 0x6133 0x6233 --hex --create_if_missing")
# No param called he
self.assertRunFAIL("put 0x6133 0x6233 --he --create_if_missing")
# max_keys is not applicable for put
self.assertRunFAIL("put 0x6133 0x6233 --max_keys=1 --create_if_missing")
# hex has invalid boolean value
self.assertRunFAIL("put 0x6133 0x6233 --hex=Boo --create_if_missing")
def testDumpLoad(self):
print "Running testDumpLoad..."
self.assertRunOK("batchput --create_if_missing x1 y1 x2 y2 x3 y3 x4 y4",
"OK")
self.assertRunOK("scan", "x1 : y1\nx2 : y2\nx3 : y3\nx4 : y4")
origDbPath = os.path.join(self.TMP_DIR, self.DB_NAME)
# Dump and load without any additional params specified
dumpFilePath = os.path.join(self.TMP_DIR, "dump1")
loadedDbPath = os.path.join(self.TMP_DIR, "loaded_from_dump1")
self.assertTrue(self.dumpDb("--db=%s" % origDbPath, dumpFilePath))
self.assertTrue(self.loadDb(
"--db=%s --create_if_missing" % loadedDbPath, dumpFilePath))
self.assertRunOKFull("scan --db=%s" % loadedDbPath,
"x1 : y1\nx2 : y2\nx3 : y3\nx4 : y4")
# Dump and load in hex
dumpFilePath = os.path.join(self.TMP_DIR, "dump2")
loadedDbPath = os.path.join(self.TMP_DIR, "loaded_from_dump2")
self.assertTrue(self.dumpDb("--db=%s --hex" % origDbPath, dumpFilePath))
self.assertTrue(self.loadDb(
"--db=%s --hex --create_if_missing" % loadedDbPath, dumpFilePath))
self.assertRunOKFull("scan --db=%s" % loadedDbPath,
"x1 : y1\nx2 : y2\nx3 : y3\nx4 : y4")
# Dump only a portion of the key range
dumpFilePath = os.path.join(self.TMP_DIR, "dump3")
loadedDbPath = os.path.join(self.TMP_DIR, "loaded_from_dump3")
self.assertTrue(self.dumpDb(
"--db=%s --from=x1 --to=x3" % origDbPath, dumpFilePath))
self.assertTrue(self.loadDb(
"--db=%s --create_if_missing" % loadedDbPath, dumpFilePath))
self.assertRunOKFull("scan --db=%s" % loadedDbPath, "x1 : y1\nx2 : y2")
# Dump upto max_keys rows
dumpFilePath = os.path.join(self.TMP_DIR, "dump4")
loadedDbPath = os.path.join(self.TMP_DIR, "loaded_from_dump4")
self.assertTrue(self.dumpDb(
"--db=%s --max_keys=3" % origDbPath, dumpFilePath))
self.assertTrue(self.loadDb(
"--db=%s --create_if_missing" % loadedDbPath, dumpFilePath))
self.assertRunOKFull("scan --db=%s" % loadedDbPath,
"x1 : y1\nx2 : y2\nx3 : y3")
# Load into an existing db, create_if_missing is not specified
self.assertTrue(self.dumpDb("--db=%s" % origDbPath, dumpFilePath))
self.assertTrue(self.loadDb("--db=%s" % loadedDbPath, dumpFilePath))
self.assertRunOKFull("scan --db=%s" % loadedDbPath,
"x1 : y1\nx2 : y2\nx3 : y3\nx4 : y4")
# Dump and load with WAL disabled
dumpFilePath = os.path.join(self.TMP_DIR, "dump5")
loadedDbPath = os.path.join(self.TMP_DIR, "loaded_from_dump5")
self.assertTrue(self.dumpDb("--db=%s" % origDbPath, dumpFilePath))
self.assertTrue(self.loadDb(
"--db=%s --disable_wal --create_if_missing" % loadedDbPath,
dumpFilePath))
self.assertRunOKFull("scan --db=%s" % loadedDbPath,
"x1 : y1\nx2 : y2\nx3 : y3\nx4 : y4")
# Dump and load with lots of extra params specified
extraParams = " ".join(["--bloom_bits=14", "--block_size=1024",
"--auto_compaction=true",
"--write_buffer_size=4194304",
"--file_size=2097152"])
dumpFilePath = os.path.join(self.TMP_DIR, "dump6")
loadedDbPath = os.path.join(self.TMP_DIR, "loaded_from_dump6")
self.assertTrue(self.dumpDb(
"--db=%s %s" % (origDbPath, extraParams), dumpFilePath))
self.assertTrue(self.loadDb(
"--db=%s %s --create_if_missing" % (loadedDbPath, extraParams),
dumpFilePath))
self.assertRunOKFull("scan --db=%s" % loadedDbPath,
"x1 : y1\nx2 : y2\nx3 : y3\nx4 : y4")
# Dump with count_only
dumpFilePath = os.path.join(self.TMP_DIR, "dump7")
loadedDbPath = os.path.join(self.TMP_DIR, "loaded_from_dump7")
self.assertTrue(self.dumpDb(
"--db=%s --count_only" % origDbPath, dumpFilePath))
self.assertTrue(self.loadDb(
"--db=%s --create_if_missing" % loadedDbPath, dumpFilePath))
# DB should have atleast one value for scan to work
self.assertRunOKFull("put --db=%s k1 v1" % loadedDbPath, "OK")
self.assertRunOKFull("scan --db=%s" % loadedDbPath, "k1 : v1")
# Dump command fails because of typo in params
dumpFilePath = os.path.join(self.TMP_DIR, "dump8")
self.assertFalse(self.dumpDb(
"--db=%s --create_if_missing" % origDbPath, dumpFilePath))
def testMiscAdminTask(self):
print "Running testMiscAdminTask..."
# These tests need to be improved; for example with asserts about
# whether compaction or level reduction actually took place.
self.assertRunOK("batchput --create_if_missing x1 y1 x2 y2 x3 y3 x4 y4",
"OK")
self.assertRunOK("scan", "x1 : y1\nx2 : y2\nx3 : y3\nx4 : y4")
origDbPath = os.path.join(self.TMP_DIR, self.DB_NAME)
self.assertTrue(0 == run_err_null(
"./ldb compact --db=%s" % origDbPath))
self.assertRunOK("scan", "x1 : y1\nx2 : y2\nx3 : y3\nx4 : y4")
self.assertTrue(0 == run_err_null(
"./ldb reduce_levels --db=%s --new_levels=2" % origDbPath))
self.assertRunOK("scan", "x1 : y1\nx2 : y2\nx3 : y3\nx4 : y4")
self.assertTrue(0 == run_err_null(
"./ldb reduce_levels --db=%s --new_levels=3" % origDbPath))
self.assertRunOK("scan", "x1 : y1\nx2 : y2\nx3 : y3\nx4 : y4")
self.assertTrue(0 == run_err_null(
"./ldb compact --db=%s --from=x1 --to=x3" % origDbPath))
self.assertRunOK("scan", "x1 : y1\nx2 : y2\nx3 : y3\nx4 : y4")
self.assertTrue(0 == run_err_null(
"./ldb compact --db=%s --hex --from=0x6131 --to=0x6134"
% origDbPath))
self.assertRunOK("scan", "x1 : y1\nx2 : y2\nx3 : y3\nx4 : y4")
#TODO(dilip): Not sure what should be passed to WAL.Currently corrupted.
self.assertTrue(0 == run_err_null(
"./ldb dump_wal --db=%s --walfile=%s --header" % (
origDbPath, os.path.join(origDbPath, "LOG"))))
self.assertRunOK("scan", "x1 : y1\nx2 : y2\nx3 : y3\nx4 : y4")
def testCheckConsistency(self):
print "Running testCheckConsistency..."
dbPath = os.path.join(self.TMP_DIR, self.DB_NAME)
self.assertRunOK("put x1 y1 --create_if_missing", "OK")
self.assertRunOK("put x2 y2", "OK")
self.assertRunOK("get x1", "y1")
self.assertRunOK("checkconsistency", "OK")
sstFilePath = my_check_output("ls %s" % os.path.join(dbPath, "*.sst"),
shell=True)
# Modify the file
my_check_output("echo 'evil' > %s" % sstFilePath, shell=True)
self.assertRunFAIL("checkconsistency")
# Delete the file
my_check_output("rm -f %s" % sstFilePath, shell=True)
self.assertRunFAIL("checkconsistency")
def dumpLiveFiles(self, params, dumpFile):
return 0 == run_err_null("./ldb dump_live_files %s > %s" % (
params, dumpFile))
def testDumpLiveFiles(self):
print "Running testDumpLiveFiles..."
dbPath = os.path.join(self.TMP_DIR, self.DB_NAME)
self.assertRunOK("put x1 y1 --create_if_missing", "OK")
self.assertRunOK("put x2 y2", "OK")
dumpFilePath = os.path.join(self.TMP_DIR, "dump1")
self.assertTrue(self.dumpLiveFiles("--db=%s" % dbPath, dumpFilePath))
self.assertRunOK("delete x1", "OK")
self.assertRunOK("put x3 y3", "OK")
dumpFilePath = os.path.join(self.TMP_DIR, "dump2")
self.assertTrue(self.dumpLiveFiles("--db=%s" % dbPath, dumpFilePath))
def getManifests(self, directory):
return glob.glob(directory + "/MANIFEST-*")
def copyManifests(self, src, dest):
return 0 == run_err_null("cp " + src + " " + dest)
def testManifestDump(self):
print "Running testManifestDump..."
dbPath = os.path.join(self.TMP_DIR, self.DB_NAME)
self.assertRunOK("put 1 1 --create_if_missing", "OK")
self.assertRunOK("put 2 2", "OK")
self.assertRunOK("put 3 3", "OK")
# Pattern to expect from manifest_dump.
num = "[0-9]+"
st = ".*"
subpat = st + " @ " + num + ": " + num
regex = num + ":" + num + "\[" + subpat + ".." + subpat + "\]"
expected_pattern = re.compile(regex)
cmd = "manifest_dump --db=%s"
manifest_files = self.getManifests(dbPath)
self.assertTrue(len(manifest_files) == 1)
# Test with the default manifest file in dbPath.
self.assertRunOKFull(cmd % dbPath, expected_pattern,
unexpected=False, isPattern=True)
self.copyManifests(manifest_files[0], manifest_files[0] + "1")
manifest_files = self.getManifests(dbPath)
self.assertTrue(len(manifest_files) == 2)
# Test with multiple manifest files in dbPath.
self.assertRunFAILFull(cmd % dbPath)
# Running it with the copy we just created should pass.
self.assertRunOKFull((cmd + " --path=%s")
% (dbPath, manifest_files[1]),
expected_pattern, unexpected=False,
isPattern=True)
def testListColumnFamilies(self):
print "Running testListColumnFamilies..."
dbPath = os.path.join(self.TMP_DIR, self.DB_NAME)
self.assertRunOK("put x1 y1 --create_if_missing", "OK")
cmd = "list_column_families %s | grep -v \"Column families\""
# Test on valid dbPath.
self.assertRunOKFull(cmd % dbPath, "{default}")
# Test on empty path.
self.assertRunFAILFull(cmd % "")
if __name__ == "__main__":
unittest.main()