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ycqlsh.py
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ycqlsh.py
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#!/bin/sh
# -*- mode: Python -*-
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
""":"
# bash code here; finds a suitable python interpreter and execs this file.
# this implementation of cqlsh is compatible with both Python 3 and Python 2.7.
# prefer unqualified "python" if suitable:
python -c 'import sys; sys.exit(not (0x020700b0 < sys.hexversion))' 2>/dev/null \
&& exec python "$0" "$@"
for pyver in 3 2.7; do
which python$pyver > /dev/null 2>&1 && exec python$pyver "$0" "$@"
done
echo "No appropriate python interpreter found." >&2
exit 1
":"""
from __future__ import division, unicode_literals
import cmd
import codecs
import csv
import getpass
import optparse
import os
import platform
import sys
import traceback
import warnings
import webbrowser
from contextlib import contextmanager
from glob import glob
from uuid import UUID
from time import time
if sys.version_info.major != 3 and (sys.version_info.major == 2 and sys.version_info.minor != 7):
sys.exit("\nCQL Shell supports only Python 3 or Python 2.7\n")
# see CASSANDRA-10428
if platform.python_implementation().startswith('Jython'):
sys.exit("\nCQL Shell does not run on Jython\n")
UTF8 = 'utf-8'
CP65001 = 'cp65001' # Win utf-8 variant
description = "CQL Shell for Apache Cassandra"
version = "5.0.1"
readline = None
try:
# check if tty first, cause readline doesn't check, and only cares
# about $TERM. we don't want the funky escape code stuff to be
# output if not a tty.
if sys.stdin.isatty():
import readline
except ImportError:
pass
CQL_LIB_PREFIX = 'cassandra-driver-internal-only-'
CASSANDRA_PATH = os.path.join(os.path.dirname(os.path.realpath(__file__)), '..')
CASSANDRA_CQL_HTML_FALLBACK = 'https://cassandra.apache.org/doc/cql3/CQL-3.2.html'
# default location of local CQL.html
if os.path.exists(CASSANDRA_PATH + '/doc/cql3/CQL.html'):
# default location of local CQL.html
CASSANDRA_CQL_HTML = 'file://' + CASSANDRA_PATH + '/doc/cql3/CQL.html'
elif os.path.exists('/usr/share/doc/cassandra/CQL.html'):
# fallback to package file
CASSANDRA_CQL_HTML = 'file:///usr/share/doc/cassandra/CQL.html'
else:
# fallback to online version
CASSANDRA_CQL_HTML = CASSANDRA_CQL_HTML_FALLBACK
# On Linux, the Python webbrowser module uses the 'xdg-open' executable
# to open a file/URL. But that only works, if the current session has been
# opened from _within_ a desktop environment. I.e. 'xdg-open' will fail,
# if the session's been opened via ssh to a remote box.
#
# Use 'python' to get some information about the detected browsers.
# >>> import webbrowser
# >>> webbrowser._tryorder
# >>> webbrowser._browser
#
# webbrowser._tryorder is None in python3.7+
if webbrowser._tryorder is None or len(webbrowser._tryorder) == 0:
CASSANDRA_CQL_HTML = CASSANDRA_CQL_HTML_FALLBACK
elif webbrowser._tryorder[0] == 'xdg-open' and os.environ.get('XDG_DATA_DIRS', '') == '':
# only on Linux (some OS with xdg-open)
webbrowser._tryorder.remove('xdg-open')
webbrowser._tryorder.append('xdg-open')
# use bundled libs for python-cql and thrift, if available. if there
# is a ../lib dir, use bundled libs there preferentially.
ZIPLIB_DIRS = [os.path.join(CASSANDRA_PATH, 'lib')]
myplatform = platform.system()
is_win = myplatform == 'Windows'
# Workaround for supporting CP65001 encoding on python < 3.3 (https://bugs.python.org/issue13216)
if is_win and sys.version_info < (3, 3):
codecs.register(lambda name: codecs.lookup(UTF8) if name == CP65001 else None)
if myplatform == 'Linux':
ZIPLIB_DIRS.append('/usr/share/cassandra/lib')
if os.environ.get('CQLSH_NO_BUNDLED', ''):
ZIPLIB_DIRS = ()
def find_zip(libprefix):
for ziplibdir in ZIPLIB_DIRS:
zips = glob(os.path.join(ziplibdir, libprefix + '*.zip'))
if zips:
return max(zips) # probably the highest version, if multiple
cql_zip = find_zip(CQL_LIB_PREFIX)
if cql_zip:
ver = os.path.splitext(os.path.basename(cql_zip))[0][len(CQL_LIB_PREFIX):]
sys.path.insert(0, os.path.join(cql_zip, 'cassandra-driver-' + ver))
third_parties = ('futures-', 'six-')
for lib in third_parties:
lib_zip = find_zip(lib)
if lib_zip:
sys.path.insert(0, lib_zip)
# We cannot import six until we add its location to sys.path so the Python
# interpreter can find it. Do not move this to the top.
import six
from six.moves import configparser, input
from six import StringIO, ensure_text, ensure_str
warnings.filterwarnings("ignore", r".*blist.*")
try:
import cassandra
except ImportError as e:
sys.exit("\nPython Cassandra driver not installed, or not on PYTHONPATH.\n"
'You might try "pip install cassandra-driver".\n\n'
'Python: %s\n'
'Module load path: %r\n\n'
'Error: %s\n' % (sys.executable, sys.path, e))
from cassandra.auth import PlainTextAuthProvider
from cassandra.cluster import Cluster
from cassandra.cqltypes import cql_typename
from cassandra.marshal import int64_unpack
from cassandra.metadata import (ColumnMetadata, KeyspaceMetadata,
TableMetadata, protect_name, protect_names)
from cassandra.policies import WhiteListRoundRobinPolicy
from cassandra.query import SimpleStatement, ordered_dict_factory, TraceUnavailable
from cassandra.util import datetime_from_timestamp
# cqlsh should run correctly when run out of a Cassandra source tree,
# out of an unpacked Cassandra tarball, and after a proper package install.
cqlshlibdir = os.path.join(CASSANDRA_PATH, 'pylib')
if os.path.isdir(cqlshlibdir):
sys.path.insert(0, cqlshlibdir)
from cqlshlib import cql3handling, cqlhandling, pylexotron, sslhandling, cqlshhandling
from cqlshlib.copyutil import ExportTask, ImportTask
from cqlshlib.displaying import (ANSI_RESET, BLUE, COLUMN_NAME_COLORS, CYAN,
RED, WHITE, YELLOW, FormattedValue, colorme)
from cqlshlib.formatting import (DEFAULT_DATE_FORMAT, DEFAULT_NANOTIME_FORMAT,
DEFAULT_TIMESTAMP_FORMAT, CqlType, DateTimeFormat,
format_by_type, formatter_for)
from cqlshlib.tracing import print_trace, print_trace_session
from cqlshlib.util import get_file_encoding_bomsize, trim_if_present
DEFAULT_HOST = '127.0.0.1'
DEFAULT_PORT = 9042
DEFAULT_SSL = False
DEFAULT_PROTOCOL_VERSION = 4
DEFAULT_CONNECT_TIMEOUT_SECONDS = 5
DEFAULT_REQUEST_TIMEOUT_SECONDS = 10
DEFAULT_FLOAT_PRECISION = 5
DEFAULT_DOUBLE_PRECISION = 5
DEFAULT_MAX_TRACE_WAIT = 10
DEFAULT_DISALLOW_PYTHON_DEBUG = False
if readline is not None and readline.__doc__ is not None and 'libedit' in readline.__doc__:
DEFAULT_COMPLETEKEY = '\t'
else:
DEFAULT_COMPLETEKEY = 'tab'
cqldocs = None
cqlruleset = None
epilog = """Connects to %(DEFAULT_HOST)s:%(DEFAULT_PORT)d by default. These
defaults can be changed by setting $CQLSH_HOST and/or $CQLSH_PORT. When a
host (and optional port number) are given on the command line, they take
precedence over any defaults.""" % globals()
parser = optparse.OptionParser(description=description, epilog=epilog,
usage="Usage: %prog [options] [host [port]]",
version='ycqlsh ' + version)
parser.add_option("-C", "--color", action='store_true', dest='color',
help='Always use color output')
parser.add_option("--no-color", action='store_false', dest='color',
help='Never use color output')
parser.add_option("--browser", dest='browser', help="""The browser to use to display CQL help, where BROWSER can be:
- one of the supported browsers in https://docs.python.org/2/library/webbrowser.html.
- browser path followed by %s, example: /usr/bin/google-chrome-stable %s""")
parser.add_option('--ssl', action='store_true', help='Use SSL', default=False)
parser.add_option("-u", "--username", help="Authenticate as user.")
parser.add_option("-p", "--password", help="Authenticate using password.")
parser.add_option('-k', '--keyspace', help='Authenticate to the given keyspace.')
parser.add_option("-f", "--file", help="Execute commands from FILE, then exit")
parser.add_option('--debug', action='store_true',
help='Show additional debugging information')
parser.add_option("--encoding", help="Specify a non-default encoding for output." +
" (Default: %s)" % (UTF8,))
parser.add_option("--cqlshrc", help="Specify an alternative cqlshrc file location.")
parser.add_option('--cqlversion', default=None,
help='Specify a particular CQL version, '
'by default the highest version supported by the server will be used.'
' Examples: "3.0.3", "3.1.0"')
parser.add_option("-e", "--execute", help='Execute the statement and quit.')
parser.add_option("--connect-timeout", default=DEFAULT_CONNECT_TIMEOUT_SECONDS, dest='connect_timeout',
help='Specify the connection timeout in seconds (default: %default seconds).')
parser.add_option("--request-timeout", default=DEFAULT_REQUEST_TIMEOUT_SECONDS, dest='request_timeout',
help='Specify the default request timeout in seconds (default: %default seconds).')
parser.add_option("-t", "--tty", action='store_true', dest='tty',
help='Force tty mode (command prompt).')
parser.add_option("-r", "--refresh_on_describe", action='store_true',
help='Force refreshing of the schema metadata on DESCRIBE command.')
parser.add_option("--disallow_python_debug", default=DEFAULT_DISALLOW_PYTHON_DEBUG, action='store_true',
help='Disallow the DEBUG command to start a Python debugger session')
optvalues = optparse.Values()
(options, arguments) = parser.parse_args(sys.argv[1:], values=optvalues)
# BEGIN history/config definition
def mkdirp(path):
"""Creates all parent directories up to path parameter or fails when path exists, but it is not a directory."""
try:
os.makedirs(path)
except OSError:
if not os.path.isdir(path):
raise
def resolve_cql_history_file():
default_cql_history = os.path.expanduser(os.path.join('~', '.cassandra', 'cqlsh_history'))
if 'CQL_HISTORY' in os.environ:
return os.environ['CQL_HISTORY']
else:
return default_cql_history
HISTORY = resolve_cql_history_file()
HISTORY_DIR = os.path.dirname(HISTORY)
try:
mkdirp(HISTORY_DIR)
except OSError:
print('\nWarning: Cannot create directory at `%s`. Command history will not be saved. Please check what was the environment property CQL_HISTORY set to.\n' % HISTORY_DIR)
DEFAULT_CQLSHRC = os.path.join('~', '.cassandra', 'cqlshrc')
if hasattr(options, 'cqlshrc'):
CONFIG_FILE = options.cqlshrc
if not os.path.exists(CONFIG_FILE):
print('\nWarning: Specified cqlshrc location `%s` does not exist. Using `%s` instead.\n' % (CONFIG_FILE, DEFAULT_CQLSHRC))
CONFIG_FILE = DEFAULT_CQLSHRC
else:
CONFIG_FILE = DEFAULT_CQLSHRC
OLD_CONFIG_FILE = os.path.expanduser(os.path.join('~', '.cqlshrc'))
if os.path.exists(OLD_CONFIG_FILE):
if os.path.exists(CONFIG_FILE):
print('\nWarning: cqlshrc config files were found at both the old location ({0})'
+ ' and the new location ({1}), the old config file will not be migrated to the new'
+ ' location, and the new location will be used for now. You should manually'
+ ' consolidate the config files at the new location and remove the old file.'
.format(OLD_CONFIG_FILE, CONFIG_FILE))
else:
os.rename(OLD_CONFIG_FILE, CONFIG_FILE)
OLD_HISTORY = os.path.expanduser(os.path.join('~', '.cqlsh_history'))
if os.path.exists(OLD_HISTORY):
os.rename(OLD_HISTORY, HISTORY)
# END history/config definition
CQL_ERRORS = (
cassandra.AlreadyExists, cassandra.AuthenticationFailed, cassandra.CoordinationFailure,
cassandra.InvalidRequest, cassandra.Timeout, cassandra.Unauthorized, cassandra.OperationTimedOut,
cassandra.cluster.NoHostAvailable,
cassandra.connection.ConnectionBusy, cassandra.connection.ProtocolError, cassandra.connection.ConnectionException,
cassandra.protocol.ErrorMessage, cassandra.protocol.InternalError, cassandra.query.TraceUnavailable
)
debug_completion = bool(os.environ.get('CQLSH_DEBUG_COMPLETION', '') == 'YES')
class NoKeyspaceError(Exception):
pass
class KeyspaceNotFound(Exception):
pass
class ColumnFamilyNotFound(Exception):
pass
class IndexNotFound(Exception):
pass
class MaterializedViewNotFound(Exception):
pass
class ObjectNotFound(Exception):
pass
class VersionNotSupported(Exception):
pass
class UserTypeNotFound(Exception):
pass
class FunctionNotFound(Exception):
pass
class AggregateNotFound(Exception):
pass
class DecodeError(Exception):
verb = 'decode'
def __init__(self, thebytes, err, colname=None):
self.thebytes = thebytes
self.err = err
self.colname = colname
def __str__(self):
return str(self.thebytes)
def message(self):
what = 'value %r' % (self.thebytes,)
if self.colname is not None:
what = 'value %r (for column %r)' % (self.thebytes, self.colname)
return 'Failed to %s %s : %s' \
% (self.verb, what, self.err)
def __repr__(self):
return '<%s %s>' % (self.__class__.__name__, self.message())
class FormatError(DecodeError):
verb = 'format'
def full_cql_version(ver):
while ver.count('.') < 2:
ver += '.0'
ver_parts = ver.split('-', 1) + ['']
vertuple = tuple(list(map(int, ver_parts[0].split('.'))) + [ver_parts[1]])
return ver, vertuple
def format_value(val, cqltype, encoding, addcolor=False, date_time_format=None,
float_precision=None, colormap=None, nullval=None):
if isinstance(val, DecodeError):
if addcolor:
return colorme(repr(val.thebytes), colormap, 'error')
else:
return FormattedValue(repr(val.thebytes))
return format_by_type(val, cqltype=cqltype, encoding=encoding, colormap=colormap,
addcolor=addcolor, nullval=nullval, date_time_format=date_time_format,
float_precision=float_precision)
def show_warning_without_quoting_line(message, category, filename, lineno, file=None, line=None):
if file is None:
file = sys.stderr
try:
file.write(warnings.formatwarning(message, category, filename, lineno, line=''))
except IOError:
pass
warnings.showwarning = show_warning_without_quoting_line
warnings.filterwarnings('always', category=cql3handling.UnexpectedTableStructure)
def insert_driver_hooks():
class DateOverFlowWarning(RuntimeWarning):
pass
# Native datetime types blow up outside of datetime.[MIN|MAX]_YEAR. We will fall back to an int timestamp
def deserialize_date_fallback_int(byts, protocol_version):
timestamp_ms = int64_unpack(byts)
try:
return datetime_from_timestamp(timestamp_ms / 1000.0)
except OverflowError:
warnings.warn(DateOverFlowWarning("Some timestamps are larger than Python datetime can represent. "
"Timestamps are displayed in milliseconds from epoch."))
return timestamp_ms
cassandra.cqltypes.DateType.deserialize = staticmethod(deserialize_date_fallback_int)
if hasattr(cassandra, 'deserializers'):
del cassandra.deserializers.DesDateType
# Return cassandra.cqltypes.EMPTY instead of None for empty values
cassandra.cqltypes.CassandraType.support_empty_values = True
class Shell(cmd.Cmd):
custom_prompt = os.getenv('CQLSH_PROMPT', '')
if custom_prompt != '':
custom_prompt += "\n"
default_prompt = custom_prompt + "ycqlsh> "
continue_prompt = " ... "
keyspace_prompt = custom_prompt + "ycqlsh:%s> "
keyspace_continue_prompt = "%s ... "
show_line_nums = False
debug = False
stop = False
last_hist = None
shunted_query_out = None
use_paging = True
in_refresh_schema_metadata = False
default_page_size = 100
def __init__(self, hostname, port, color=False,
username=None, password=None, encoding=None, stdin=None, tty=True,
completekey=DEFAULT_COMPLETEKEY, browser=None, use_conn=None,
cqlver=None, keyspace=None,
tracing_enabled=False, expand_enabled=False,
timing_enabled=False,
display_nanotime_format=DEFAULT_NANOTIME_FORMAT,
display_timestamp_format=DEFAULT_TIMESTAMP_FORMAT,
display_date_format=DEFAULT_DATE_FORMAT,
display_float_precision=DEFAULT_FLOAT_PRECISION,
display_double_precision=DEFAULT_DOUBLE_PRECISION,
display_timezone=None,
max_trace_wait=DEFAULT_MAX_TRACE_WAIT,
ssl=False,
single_statement=None,
request_timeout=DEFAULT_REQUEST_TIMEOUT_SECONDS,
protocol_version=DEFAULT_PROTOCOL_VERSION,
connect_timeout=DEFAULT_CONNECT_TIMEOUT_SECONDS,
refresh_on_describe=False,
disallow_python_debug=DEFAULT_DISALLOW_PYTHON_DEBUG):
cmd.Cmd.__init__(self, completekey=completekey)
self.hostname = hostname
self.port = port
self.auth_provider = None
if username:
if not password:
password = getpass.getpass()
self.auth_provider = PlainTextAuthProvider(username=username, password=password)
self.username = username
self.keyspace = keyspace
self.ssl = ssl
self.tracing_enabled = tracing_enabled
self.timing_enabled = timing_enabled
self.page_size = self.default_page_size
self.expand_enabled = expand_enabled
if use_conn:
self.conn = use_conn
else:
self.conn = Cluster(contact_points=(self.hostname,), port=self.port, cql_version=cqlver,
protocol_version=protocol_version,
auth_provider=self.auth_provider,
ssl_options=sslhandling.ssl_settings(hostname, CONFIG_FILE) if ssl else None,
load_balancing_policy=WhiteListRoundRobinPolicy([self.hostname]),
control_connection_timeout=connect_timeout,
connect_timeout=connect_timeout)
self.owns_connection = not use_conn
if keyspace:
self.session = self.conn.connect(keyspace)
else:
self.session = self.conn.connect()
if browser == "":
browser = None
self.browser = browser
self.color = color
self.display_nanotime_format = display_nanotime_format
self.display_timestamp_format = display_timestamp_format
self.display_date_format = display_date_format
self.display_float_precision = display_float_precision
self.display_double_precision = display_double_precision
self.display_timezone = display_timezone
self.session.default_timeout = request_timeout
self.session.row_factory = ordered_dict_factory
self.session.default_consistency_level = cassandra.ConsistencyLevel.QUORUM
self.get_connection_versions()
self.set_expanded_cql_version(self.connection_versions['cql'])
self.current_keyspace = keyspace
self.max_trace_wait = max_trace_wait
self.session.max_trace_wait = max_trace_wait
self.tty = tty
self.encoding = encoding
self.check_windows_encoding()
self.output_codec = codecs.lookup(encoding)
self.statement = StringIO()
self.lineno = 1
self.in_comment = False
self.prompt = ''
if stdin is None:
stdin = sys.stdin
if tty:
self.reset_prompt()
self.report_connection()
print('Use HELP for help.')
else:
self.show_line_nums = True
self.stdin = stdin
self.query_out = sys.stdout
self.consistency_level = cassandra.ConsistencyLevel.QUORUM
self.serial_consistency_level = cassandra.ConsistencyLevel.SERIAL
self.empty_lines = 0
self.statement_error = False
self.single_statement = single_statement
self.refresh_on_describe = refresh_on_describe
self.disallow_python_debug = disallow_python_debug
@property
def is_using_utf8(self):
# utf8 encodings from https://docs.python.org/{2,3}/library/codecs.html
return self.encoding.replace('-', '_').lower() in ['utf', 'utf_8', 'u8', 'utf8', CP65001]
def check_windows_encoding(self):
if is_win and os.name == 'nt' and self.tty and \
self.is_using_utf8 and sys.stdout.encoding != CP65001:
self.printerr("\nWARNING: console codepage must be set to cp65001 "
"to support {} encoding on Windows platforms.\n"
"If you experience encoding problems, change your console"
" codepage with 'chcp 65001' before starting ycqlsh.\n".format(self.encoding))
def internal_refresh_schema_metadata(self):
if self.debug:
self.printerr("Refreshing schema metadata cache...", color=YELLOW)
self.conn.refresh_schema_metadata(-1)
def refresh_schema_metadata(self, fn_to_rerun, args, ex):
if self.in_refresh_schema_metadata:
raise ex
self.internal_refresh_schema_metadata()
try:
self.in_refresh_schema_metadata = True
return fn_to_rerun(*args)
finally:
self.in_refresh_schema_metadata = False
def set_expanded_cql_version(self, ver):
ver, vertuple = full_cql_version(ver)
self.cql_version = ver
self.cql_ver_tuple = vertuple
def cqlver_atleast(self, major, minor=0, patch=0):
return self.cql_ver_tuple[:3] >= (major, minor, patch)
def myformat_value(self, val, cqltype=None, **kwargs):
if isinstance(val, DecodeError):
self.decoding_errors.append(val)
try:
dtformats = DateTimeFormat(timestamp_format=self.display_timestamp_format,
date_format=self.display_date_format, nanotime_format=self.display_nanotime_format,
timezone=self.display_timezone)
precision = self.display_double_precision if cqltype is not None and cqltype.type_name == 'double' \
else self.display_float_precision
return format_value(val, cqltype=cqltype, encoding=self.output_codec.name,
addcolor=self.color, date_time_format=dtformats,
float_precision=precision, **kwargs)
except Exception as e:
err = FormatError(val, e)
self.decoding_errors.append(err)
return format_value(err, cqltype=cqltype, encoding=self.output_codec.name, addcolor=self.color)
def myformat_colname(self, name, table_meta=None):
column_colors = COLUMN_NAME_COLORS.copy()
# check column role and color appropriately
if table_meta:
if name in [col.name for col in table_meta.partition_key]:
column_colors.default_factory = lambda: RED
elif name in [col.name for col in table_meta.clustering_key]:
column_colors.default_factory = lambda: CYAN
elif name in table_meta.columns and table_meta.columns[name].is_static:
column_colors.default_factory = lambda: WHITE
return self.myformat_value(name, colormap=column_colors)
def report_connection(self):
self.show_host()
self.show_version()
def show_host(self):
print("Connected to %s at %s:%d." % \
(self.applycolor(self.get_cluster_name(), BLUE),
self.hostname,
self.port))
def show_version(self):
vers = self.connection_versions.copy()
vers['shver'] = version
# system.Versions['cql'] apparently does not reflect changes with
# set_cql_version.
vers['cql'] = self.cql_version
print("[ycqlsh %(shver)s | Cassandra %(build)s | CQL spec %(cql)s | Native protocol v%(protocol)s]" % vers)
def show_session(self, sessionid, partial_session=False):
print_trace_session(self, self.session, sessionid, partial_session)
def get_connection_versions(self):
result, = self.session.execute("select * from system.local where key = 'local'")
vers = {
'build': result['release_version'],
'protocol': result['native_protocol_version'],
'cql': result['cql_version'],
}
self.connection_versions = vers
def get_keyspace_names(self):
return list(map(str, list(self.conn.metadata.keyspaces.keys())))
def get_columnfamily_names(self, ksname=None):
if ksname is None:
ksname = self.current_keyspace
return list(map(str, list(self.get_keyspace_meta(ksname).tables.keys())))
def get_materialized_view_names(self, ksname=None):
if ksname is None:
ksname = self.current_keyspace
return list(map(str, list(self.get_keyspace_meta(ksname).views.keys())))
def get_index_names(self, ksname=None):
if ksname is None:
ksname = self.current_keyspace
return list(map(str, list(self.get_keyspace_meta(ksname).indexes.keys())))
def get_column_names(self, ksname, cfname):
if ksname is None:
ksname = self.current_keyspace
layout = self.get_table_meta(ksname, cfname)
return [str(col) for col in layout.columns]
def get_usertype_names(self, ksname=None):
if ksname is None:
ksname = self.current_keyspace
return list(self.get_keyspace_meta(ksname).user_types.keys())
def get_usertype_layout(self, ksname, typename):
if ksname is None:
ksname = self.current_keyspace
ks_meta = self.get_keyspace_meta(ksname)
try:
user_type = ks_meta.user_types[typename]
except KeyError:
return self.refresh_schema_metadata(self.get_usertype_layout, (ksname, typename),
UserTypeNotFound("User type %r not found" % typename))
return list(zip(user_type.field_names, user_type.field_types))
def get_userfunction_names(self, ksname=None):
if ksname is None:
ksname = self.current_keyspace
return [f.name for f in list(self.get_keyspace_meta(ksname).functions.values())]
def get_useraggregate_names(self, ksname=None):
if ksname is None:
ksname = self.current_keyspace
return [f.name for f in list(self.get_keyspace_meta(ksname).aggregates.values())]
def get_cluster_name(self):
return self.conn.metadata.cluster_name
def get_partitioner(self):
return self.conn.metadata.partitioner
def get_keyspace_meta(self, ksname):
if ksname not in self.conn.metadata.keyspaces:
return self.refresh_schema_metadata(self.get_keyspace_meta, (ksname,),
KeyspaceNotFound('Keyspace %r not found.' % ksname))
return self.conn.metadata.keyspaces[ksname]
def get_keyspaces(self):
return list(self.conn.metadata.keyspaces.values())
def get_ring(self, ks):
self.conn.metadata.token_map.rebuild_keyspace(ks, build_if_absent=True)
return self.conn.metadata.token_map.tokens_to_hosts_by_ks[ks]
def get_table_meta(self, ksname, tablename):
if ksname is None:
ksname = self.current_keyspace
ksmeta = self.get_keyspace_meta(ksname)
if tablename not in ksmeta.tables:
if ksname == 'system_auth' and tablename in ['roles', 'role_permissions']:
self.get_fake_auth_table_meta(ksname, tablename)
else:
return self.refresh_schema_metadata(self.get_table_meta, (ksname, tablename),
ColumnFamilyNotFound("Column family %r not found" % tablename))
else:
return ksmeta.tables[tablename]
def get_fake_auth_table_meta(self, ksname, tablename):
# may be using external auth implementation so internal tables
# aren't actually defined in schema. In this case, we'll fake
# them up
if tablename == 'roles':
ks_meta = KeyspaceMetadata(ksname, True, None, None)
table_meta = TableMetadata(ks_meta, 'roles')
table_meta.columns['role'] = ColumnMetadata(table_meta, 'role', cassandra.cqltypes.UTF8Type)
table_meta.columns['is_superuser'] = ColumnMetadata(table_meta, 'is_superuser', cassandra.cqltypes.BooleanType)
table_meta.columns['can_login'] = ColumnMetadata(table_meta, 'can_login', cassandra.cqltypes.BooleanType)
elif tablename == 'role_permissions':
ks_meta = KeyspaceMetadata(ksname, True, None, None)
table_meta = TableMetadata(ks_meta, 'role_permissions')
table_meta.columns['role'] = ColumnMetadata(table_meta, 'role', cassandra.cqltypes.UTF8Type)
table_meta.columns['resource'] = ColumnMetadata(table_meta, 'resource', cassandra.cqltypes.UTF8Type)
table_meta.columns['permission'] = ColumnMetadata(table_meta, 'permission', cassandra.cqltypes.UTF8Type)
else:
return self.refresh_schema_metadata(self.get_fake_auth_table_meta, (ksname, tablename),
ColumnFamilyNotFound("Column family %r not found" % tablename))
def get_index_meta(self, ksname, idxname):
if ksname is None:
ksname = self.current_keyspace
ksmeta = self.get_keyspace_meta(ksname)
if idxname not in ksmeta.indexes:
return self.refresh_schema_metadata(self.get_index_meta, (ksname, idxname),
IndexNotFound("Index %r not found" % idxname))
return ksmeta.indexes[idxname]
def get_view_meta(self, ksname, viewname):
if ksname is None:
ksname = self.current_keyspace
ksmeta = self.get_keyspace_meta(ksname)
if viewname not in ksmeta.views:
return self.refresh_schema_metadata(self.get_view_meta, (ksname, viewname),
MaterializedViewNotFound("Materialized view %r not found" % viewname))
return ksmeta.views[viewname]
def get_object_meta(self, ks, name):
if name is None:
if ks and ks in self.conn.metadata.keyspaces:
return self.conn.metadata.keyspaces[ks]
elif self.current_keyspace is None:
return self.refresh_schema_metadata(self.get_object_meta, (ks, name),
ObjectNotFound("%r not found in keyspaces" % (ks)))
else:
name = ks
ks = self.current_keyspace
if ks is None:
ks = self.current_keyspace
ksmeta = self.get_keyspace_meta(ks)
if name in ksmeta.tables:
return ksmeta.tables[name]
elif name in ksmeta.indexes:
return ksmeta.indexes[name]
elif name in ksmeta.views:
return ksmeta.views[name]
return self.refresh_schema_metadata(self.get_object_meta, (ks, name),
ObjectNotFound("%r not found in keyspace %r" % (name, ks)))
def get_usertypes_meta(self):
data = self.session.execute("select * from system.schema_usertypes")
if not data:
return cql3handling.UserTypesMeta({})
return cql3handling.UserTypesMeta.from_layout(data)
def get_trigger_names(self, ksname=None):
if ksname is None:
ksname = self.current_keyspace
return [trigger.name
for table in list(self.get_keyspace_meta(ksname).tables.values())
for trigger in list(table.triggers.values())]
def reset_statement(self):
self.reset_prompt()
self.statement.truncate(0)
self.statement.seek(0)
self.empty_lines = 0
def reset_prompt(self):
if self.current_keyspace is None:
self.set_prompt(self.default_prompt, True)
else:
self.set_prompt(self.keyspace_prompt % self.current_keyspace, True)
def set_continue_prompt(self):
if self.empty_lines >= 3:
self.set_prompt("Statements are terminated with a ';'. You can press CTRL-C to cancel an incomplete statement.")
self.empty_lines = 0
return
if self.current_keyspace is None:
self.set_prompt(self.continue_prompt)
else:
spaces = ' ' * len(str(self.current_keyspace))
self.set_prompt(self.keyspace_continue_prompt % spaces)
self.empty_lines = self.empty_lines + 1 if not self.lastcmd else 0
@contextmanager
def prepare_loop(self):
readline = None
if self.tty and self.completekey:
try:
import readline
except ImportError:
if is_win:
print("WARNING: pyreadline dependency missing. Install to enable tab completion.")
pass
else:
old_completer = readline.get_completer()
readline.set_completer(self.complete)
if readline.__doc__ is not None and 'libedit' in readline.__doc__:
readline.parse_and_bind("bind -e")
readline.parse_and_bind("bind '" + self.completekey + "' rl_complete")
readline.parse_and_bind("bind ^R em-inc-search-prev")
else:
readline.parse_and_bind(self.completekey + ": complete")
try:
yield
finally:
if readline is not None:
readline.set_completer(old_completer)
def get_input_line(self, prompt=''):
if self.tty:
self.lastcmd = input(prompt)
line = ensure_text(self.lastcmd) + '\n'
else:
self.lastcmd = ensure_text(self.stdin.readline())
line = self.lastcmd
if not len(line):
raise EOFError
self.lineno += 1
return line
def use_stdin_reader(self, until='', prompt=''):
until += '\n'
while True:
try:
newline = self.get_input_line(prompt=prompt)
except EOFError:
return
if newline == until:
return
yield newline
def cmdloop(self):
"""
Adapted from cmd.Cmd's version, because there is literally no way with
cmd.Cmd.cmdloop() to tell the difference between "EOF" showing up in
input and an actual EOF.
"""
with self.prepare_loop():
while not self.stop:
try:
if self.single_statement:
line = self.single_statement
self.stop = True
else:
line = self.get_input_line(self.prompt)
self.statement.write(line)
if self.onecmd(self.statement.getvalue()):
self.reset_statement()
except EOFError:
self.handle_eof()
except CQL_ERRORS as cqlerr:
self.printerr(cqlerr.message)
except KeyboardInterrupt:
self.reset_statement()
print('')
def onecmd(self, statementtext):
"""
Returns true if the statement is complete and was handled (meaning it
can be reset).
"""
statementtext = ensure_text(statementtext)
try:
statements, endtoken_escaped = cqlruleset.cql_split_statements(statementtext)
except pylexotron.LexingError as e:
if self.show_line_nums:
self.printerr('Invalid syntax at char %d' % (e.charnum,))
else:
self.printerr('Invalid syntax at line %d, char %d'
% (e.linenum, e.charnum))
statementline = statementtext.split('\n')[e.linenum - 1]
self.printerr(' %s' % statementline)
self.printerr(' %s^' % (' ' * e.charnum))
return True
while statements and not statements[-1]:
statements = statements[:-1]
if not statements:
return True
if endtoken_escaped or statements[-1][-1][0] != 'endtoken':
self.set_continue_prompt()
return
for st in statements:
try:
self.handle_statement(st, statementtext)
except Exception as e:
if self.debug:
traceback.print_exc()
else:
self.printerr(e)
return True
def handle_eof(self):
if self.tty:
print('')
statement = self.statement.getvalue()
if statement.strip():
if not self.onecmd(statement):
self.printerr('Incomplete statement at end of file')
self.do_exit()
def handle_statement(self, tokens, srcstr):
# Concat multi-line statements and insert into history
if readline is not None:
nl_count = srcstr.count("\n")
new_hist = srcstr.replace("\n", " ").rstrip()
if nl_count > 1 and self.last_hist != new_hist:
readline.add_history(new_hist)
self.last_hist = new_hist
cmdword = tokens[0][1]
if cmdword == '?':
cmdword = 'help'
custom_handler = getattr(self, 'do_' + cmdword.lower(), None)
if custom_handler:
parsed = cqlruleset.cql_whole_parse_tokens(tokens, srcstr=srcstr,
startsymbol='cqlshCommand')
if parsed and not parsed.remainder:
# successful complete parse
return custom_handler(parsed)
else:
return self.handle_parse_error(cmdword, tokens, parsed, srcstr)
return self.perform_statement(cqlruleset.cql_extract_orig(tokens, srcstr))