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#!/usr/bin/env python
#
# Public Domain 2014-present MongoDB, Inc.
# Public Domain 2008-2014 WiredTiger, Inc.
#
# This is free and unencumbered software released into the public domain.
#
# Anyone is free to copy, modify, publish, use, compile, sell, or
# distribute this software, either in source code form or as a compiled
# binary, for any purpose, commercial or non-commercial, and by any
# means.
#
# In jurisdictions that recognize copyright laws, the author or authors
# of this software dedicate any and all copyright interest in the
# software to the public domain. We make this dedication for the benefit
# of the public at large and to the detriment of our heirs and
# successors. We intend this dedication to be an overt act of
# relinquishment in perpetuity of all present and future rights to this
# software under copyright law.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
# IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
# OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
# ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
# OTHER DEALINGS IN THE SOFTWARE.
#
# test_import01.py
# Import a file into a running database for the following scenarios:
# - The source database and destination database are different.
# - The source database and destination database are the same.
import os, random, re, shutil, string
import wttest
# Shared base class used by import tests.
class test_import_base(wttest.WiredTigerTestCase):
# Insert or update a key/value at the supplied timestamp.
def update(self, uri, key, value, ts):
cursor = self.session.open_cursor(uri)
self.session.begin_transaction()
if type(value) in [list, tuple]:
cursor.set_key(key)
cursor.set_value(*value)
cursor.insert()
else:
cursor[key] = value
self.session.commit_transaction('commit_timestamp=' + self.timestamp_str(ts))
cursor.close()
def delete(self, uri, key, ts):
cursor = self.session.open_cursor(uri)
self.session.begin_transaction()
cursor.set_key(key)
self.assertEqual(0, cursor.remove())
self.session.commit_transaction('commit_timestamp=' + self.timestamp_str(ts))
cursor.close()
# Verify the specified key/value is visible at the supplied timestamp.
def check_record(self, uri, key, value):
cursor = self.session.open_cursor(uri)
cursor.set_key(key)
self.assertEqual(0, cursor.search())
self.assertEqual(value, cursor.get_value())
cursor.close()
# Verify a range of records/timestamps.
def check(self, uri, keys, values):
for i in range(len(keys)):
if type(values[i]) in [tuple]:
self.check_record(uri, keys[i], list(values[i]))
else:
self.check_record(uri, keys[i], values[i])
# We know the ID can be different between configs, so just remove it from comparison.
# Everything else should be the same.
def config_compare(self, aconf, bconf):
a = re.sub('id=\d+,?', '', aconf)
a = (re.sub('\w+=\(.*?\)+,?', '', a).strip(',').split(',') +
re.findall('\w+=\(.*?\)+', a))
b = re.sub('id=\d+,?', '', bconf)
b = (re.sub('\w+=\(.*?\)+,?', '', b).strip(',').split(',') +
re.findall('\w+=\(.*?\)+', b))
self.assertTrue(a.sort() == b.sort())
# Populate a database with N tables, each having M rows.
def populate(self, ntables, nrows):
for table in range(0, ntables):
uri = 'table:test_import_{}'.format(
''.join(random.choice(string.ascii_letters) for i in range(10)))
self.session.create(uri, 'key_format=i,value_format=S')
cursor = self.session.open_cursor(uri)
for key in range(0, nrows):
cursor[key] = 'value_{}_{}'.format(table, key)
cursor.close()
# Copy a file from a source directory to a destination directory.
def copy_file(self, file_name, src_dir, dest_dir):
src_path = os.path.join(src_dir, file_name)
if os.path.isfile(src_path) and "WiredTiger.lock" not in file_name:
shutil.copy(src_path, dest_dir)
# test_import01
class test_import01(test_import_base):
conn_config = 'cache_size=50MB'
original_db_file = 'original_db_file'
uri = 'file:' + original_db_file
nrows = 100
ntables = 10
keys = [b'1', b'2', b'3', b'4', b'5', b'6']
values = [b'\x01\x02aaa\x03\x04', b'\x01\x02bbb\x03\x04', b'\x01\x02ccc\x03\x04',
b'\x01\x02ddd\x03\x04', b'\x01\x02eee\x03\x04', b'\x01\x02fff\x03\x04']
ts = [10*k for k in range(1, len(keys)+1)]
create_config = 'allocation_size=512,key_format=u,value_format=u'
def test_file_import(self):
self.session.create(self.uri, self.create_config)
# Add data and perform a checkpoint.
min_idx = 0
max_idx = len(self.keys) // 3
for i in range(min_idx, max_idx):
self.update(self.uri, self.keys[i], self.values[i], self.ts[i])
self.session.checkpoint()
# Add more data and checkpoint again.
min_idx = max_idx
max_idx = 2*len(self.keys) // 3
for i in range(min_idx, max_idx):
self.update(self.uri, self.keys[i], self.values[i], self.ts[i])
self.session.checkpoint()
# Export the metadata for the table.
c = self.session.open_cursor('metadata:', None, None)
original_db_file_config = c[self.uri]
c.close()
self.printVerbose(3, '\nFile configuration:\n' + original_db_file_config)
# Close the connection.
self.close_conn()
# Create a new database and connect to it.
newdir = 'IMPORT_DB'
shutil.rmtree(newdir, ignore_errors=True)
os.mkdir(newdir)
self.conn = self.setUpConnectionOpen(newdir)
self.session = self.setUpSessionOpen(self.conn)
# Make a bunch of files and fill them with data.
self.populate(self.ntables, self.nrows)
self.session.checkpoint()
# Bring forward the oldest to be past or equal to the timestamps we'll be importing.
self.conn.set_timestamp('oldest_timestamp=' + self.timestamp_str(self.ts[max_idx]))
# Copy over the datafiles for the object we want to import.
self.copy_file(self.original_db_file, '.', newdir)
# Contruct the config string.
import_config = 'import=(enabled,repair=false,file_metadata=(' + \
original_db_file_config + '))'
# Import the file.
self.session.create(self.uri, import_config)
# Verify object.
self.verifyUntilSuccess(self.session, self.uri, None)
# Check that the previously inserted values survived the import.
self.check(self.uri, self.keys[:max_idx], self.values[:max_idx])
# Compare configuration metadata.
c = self.session.open_cursor('metadata:', None, None)
current_db_file_config = c[self.uri]
c.close()
self.config_compare(original_db_file_config, current_db_file_config)
# Add some data and check that the table operates as usual after importing.
min_idx = max_idx
max_idx = len(self.keys)
for i in range(min_idx, max_idx):
self.update(self.uri, self.keys[i], self.values[i], self.ts[i])
self.check(self.uri, self.keys, self.values)
# Perform a checkpoint.
self.session.checkpoint()
def test_file_import_dropped_file(self):
self.session.create(self.uri, self.create_config)
# Add data and perform a checkpoint.
for i in range(0, len(self.keys)):
self.update(self.uri, self.keys[i], self.values[i], self.ts[i])
self.session.checkpoint()
# Export the metadata for the table.
c = self.session.open_cursor('metadata:', None, None)
original_db_file_config = c[self.uri]
c.close()
self.printVerbose(3, '\nFile configuration:\n' + original_db_file_config)
# Make a bunch of files and fill them with data.
self.populate(self.ntables, self.nrows)
# Bring forward the oldest to be past or equal to the timestamps we'll be importing.
self.conn.set_timestamp('oldest_timestamp=' + self.timestamp_str(self.ts[-1]))
# Make a copy of the data file that we're about to drop.
backup_dir = 'BACKUP'
shutil.rmtree(backup_dir, ignore_errors=True)
os.mkdir(backup_dir)
self.copy_file(self.original_db_file, '.', backup_dir)
# Drop the table.
# We'll be importing it back into our database shortly.
self.session.drop(self.uri)
# Now copy it back to our database directory.
self.copy_file(self.original_db_file, backup_dir, '.')
# Contruct the config string.
import_config = 'import=(enabled,repair=false,file_metadata=(' + \
original_db_file_config + '))'
# Import the file.
self.session.create(self.uri, import_config)
# Verify object.
self.verifyUntilSuccess(self.session, self.uri, None)
# Check that the previously inserted values survived the import.
self.check(self.uri, self.keys, self.values)
# Compare configuration metadata.
c = self.session.open_cursor('metadata:', None, None)
current_db_file_config = c[self.uri]
c.close()
self.config_compare(original_db_file_config, current_db_file_config)
if __name__ == '__main__':
wttest.run()
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