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 getSSTFiles(self, directory): return glob.glob(directory + "/*.sst") def getWALFiles(self, directory): return glob.glob(directory + "/*.log") 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) # Make sure that using the dump with --path will result in identical # output as just using manifest_dump. cmd = "dump --path=%s" self.assertRunOKFull((cmd) % (manifest_files[1]), expected_pattern, unexpected=False, isPattern=True) def testSSTDump(self): print "Running testSSTDump..." dbPath = os.path.join(self.TMP_DIR, self.DB_NAME) self.assertRunOK("put sst1 sst1_val --create_if_missing", "OK") self.assertRunOK("put sst2 sst2_val", "OK") self.assertRunOK("get sst1", "sst1_val") # Pattern to expect from SST dump. regex = ".*Sst file format:.*" expected_pattern = re.compile(regex) sst_files = self.getSSTFiles(dbPath) self.assertTrue(len(sst_files) >= 1) cmd = "dump --path=%s" self.assertRunOKFull((cmd) % (sst_files[0]), expected_pattern, unexpected=False, isPattern=True) def testWALDump(self): print "Running testWALDump..." dbPath = os.path.join(self.TMP_DIR, self.DB_NAME) self.assertRunOK("put wal1 wal1_val --create_if_missing", "OK") self.assertRunOK("put wal2 wal2_val", "OK") self.assertRunOK("get wal1", "wal1_val") # Pattern to expect from WAL dump. regex = "^Sequence,Count,ByteSize,Physical Offset,Key\(s\).*" expected_pattern = re.compile(regex) wal_files = self.getWALFiles(dbPath) self.assertTrue(len(wal_files) >= 1) cmd = "dump --path=%s" self.assertRunOKFull((cmd) % (wal_files[0]), 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()