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apache / cassandra / refs/tags/cassandra-2.1.21 / . / bin / cqlsh
blob: 30840db914060b54ce584d9d1acdd42b42c9e10d [file] [log] [blame]
#!/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.
# prefer unqualified "python" if suitable:
python -c 'import sys; sys.exit(not (0x020500b0 < sys.hexversion < 0x03000000))' 2>/dev/null \
&& exec python "$0" "$@"
for pyver in 2.6 2.7 2.5; 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 with_statement
import cmd
import codecs
import ConfigParser
import csv
import getpass
import locale
import optparse
import os
import platform
import sys
import traceback
import warnings
from StringIO import StringIO
from contextlib import contextmanager
from glob import glob
from uuid import UUID
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__)), '..')
# 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()
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)
warnings.filterwarnings("ignore", r".*blist.*")
try:
import cassandra
except ImportError, 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, PagedResult
from cassandra.metadata import protect_name, protect_names
from cassandra.policies import WhiteListRoundRobinPolicy
from cassandra.protocol import ResultMessage
from cassandra.query import SimpleStatement, ordered_dict_factory, tuple_factory
# 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
from cqlshlib.copyutil import ExportTask, ImportTask
from cqlshlib.displaying import (ANSI_RESET, BLUE, COLUMN_NAME_COLORS, CYAN,
RED, FormattedValue, colorme)
from cqlshlib.formatting import (format_by_type, format_value_utype,
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_CQLVER = '3.2.1'
DEFAULT_PROTOCOL_VERSION = 3
DEFAULT_CONNECT_TIMEOUT_SECONDS = 5
DEFAULT_REQUEST_TIMEOUT_SECONDS = 10
DEFAULT_TIME_FORMAT = '%Y-%m-%d %H:%M:%S%z'
DEFAULT_FLOAT_PRECISION = 5
DEFAULT_MAX_TRACE_WAIT = 10
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='cqlsh ' + 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('--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. If you are " +
"experiencing problems with unicode characters, using utf8 may fix the problem." +
" (Default from system preferences: %s)" % (locale.getpreferredencoding(),))
parser.add_option("--cqlshrc", help="Specify an alternative cqlshrc file location.")
parser.add_option('--cqlversion', default=DEFAULT_CQLVER,
help='Specify a particular CQL version (default: %default).'
' 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).')
optvalues = optparse.Values()
(options, arguments) = parser.parse_args(sys.argv[1:], values=optvalues)
# BEGIN history/config definition
HISTORY_DIR = os.path.expanduser(os.path.join('~', '.cassandra'))
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, HISTORY_DIR)
CONFIG_FILE = os.path.join(HISTORY_DIR, 'cqlshrc')
else:
CONFIG_FILE = os.path.join(HISTORY_DIR, 'cqlshrc')
HISTORY = os.path.join(HISTORY_DIR, 'cqlsh_history')
if not os.path.exists(HISTORY_DIR):
try:
os.mkdir(HISTORY_DIR)
except OSError:
print '\nWarning: Cannot create directory at `%s`. Command history will not be saved.\n' % HISTORY_DIR
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 (%s) and \
the new location (%s), 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.' \
% (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.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')
SYSTEM_KEYSPACES = ('system', 'system_traces', 'system_auth')
# we want the cql parser to understand our cqlsh-specific commands too
my_commands_ending_with_newline = (
'help',
'?',
'consistency',
'serial',
'describe',
'desc',
'show',
'source',
'capture',
'login',
'debug',
'tracing',
'expand',
'paging',
'exit',
'quit'
)
cqlsh_syntax_completers = []
def cqlsh_syntax_completer(rulename, termname):
def registrator(f):
cqlsh_syntax_completers.append((rulename, termname, f))
return f
return registrator
cqlsh_extra_syntax_rules = r'''
<cqlshCommand> ::= <CQL_Statement>
| <specialCommand> ( ";" | "\n" )
;
<specialCommand> ::= <describeCommand>
| <consistencyCommand>
| <serialConsistencyCommand>
| <showCommand>
| <sourceCommand>
| <captureCommand>
| <copyCommand>
| <loginCommand>
| <debugCommand>
| <helpCommand>
| <tracingCommand>
| <expandCommand>
| <exitCommand>
| <pagingCommand>
;
<describeCommand> ::= ( "DESCRIBE" | "DESC" )
( "KEYSPACES"
| "KEYSPACE" ksname=<keyspaceName>?
| ( "COLUMNFAMILY" | "TABLE" ) cf=<columnFamilyName>
| "INDEX" idx=<indexName>
| ( "COLUMNFAMILIES" | "TABLES" )
| "FULL"? "SCHEMA"
| "CLUSTER"
| "TYPES"
| "TYPE" ut=<userTypeName>
| (ksname=<keyspaceName> | cf=<columnFamilyName> | idx=<indexName>))
;
<consistencyCommand> ::= "CONSISTENCY" ( level=<consistencyLevel> )?
;
<consistencyLevel> ::= "ANY"
| "ONE"
| "TWO"
| "THREE"
| "QUORUM"
| "ALL"
| "LOCAL_QUORUM"
| "EACH_QUORUM"
| "SERIAL"
| "LOCAL_SERIAL"
| "LOCAL_ONE"
;
<serialConsistencyCommand> ::= "SERIAL" "CONSISTENCY" ( level=<serialConsistencyLevel> )?
;
<serialConsistencyLevel> ::= "SERIAL"
| "LOCAL_SERIAL"
;
<showCommand> ::= "SHOW" what=( "VERSION" | "HOST" | "SESSION" sessionid=<uuid> )
;
<sourceCommand> ::= "SOURCE" fname=<stringLiteral>
;
<captureCommand> ::= "CAPTURE" ( fname=( <stringLiteral> | "OFF" ) )?
;
<copyCommand> ::= "COPY" cf=<columnFamilyName>
( "(" [colnames]=<colname> ( "," [colnames]=<colname> )* ")" )?
( dir="FROM" ( fname=<stringLiteral> | "STDIN" )
| dir="TO" ( fname=<stringLiteral> | "STDOUT" ) )
( "WITH" <copyOption> ( "AND" <copyOption> )* )?
;
<copyOption> ::= [optnames]=(<identifier>|<reserved_identifier>) "=" [optvals]=<copyOptionVal>
;
<copyOptionVal> ::= <identifier>
| <reserved_identifier>
| <term>
;
# avoiding just "DEBUG" so that this rule doesn't get treated as a terminal
<debugCommand> ::= "DEBUG" "THINGS"?
;
<helpCommand> ::= ( "HELP" | "?" ) [topic]=( /[a-z_]*/ )*
;
<tracingCommand> ::= "TRACING" ( switch=( "ON" | "OFF" ) )?
;
<expandCommand> ::= "EXPAND" ( switch=( "ON" | "OFF" ) )?
;
<pagingCommand> ::= "PAGING" ( switch=( "ON" | "OFF" ) )?
;
<loginCommand> ::= "LOGIN" username=<username> (password=<stringLiteral>)?
;
<exitCommand> ::= "exit" | "quit"
;
<qmark> ::= "?" ;
'''
@cqlsh_syntax_completer('helpCommand', 'topic')
def complete_help(ctxt, cqlsh):
return sorted([t.upper() for t in cqldocs.get_help_topics() + cqlsh.get_help_topics()])
def complete_source_quoted_filename(ctxt, cqlsh):
partial_path = ctxt.get_binding('partial', '')
head, tail = os.path.split(partial_path)
exhead = os.path.expanduser(head)
try:
contents = os.listdir(exhead or '.')
except OSError:
return ()
matches = filter(lambda f: f.startswith(tail), contents)
annotated = []
for f in matches:
match = os.path.join(head, f)
if os.path.isdir(os.path.join(exhead, f)):
match += '/'
annotated.append(match)
return annotated
cqlsh_syntax_completer('sourceCommand', 'fname')(complete_source_quoted_filename)
cqlsh_syntax_completer('captureCommand', 'fname')(complete_source_quoted_filename)
@cqlsh_syntax_completer('copyCommand', 'fname')
def copy_fname_completer(ctxt, cqlsh):
lasttype = ctxt.get_binding('*LASTTYPE*')
if lasttype == 'unclosedString':
return complete_source_quoted_filename(ctxt, cqlsh)
partial_path = ctxt.get_binding('partial')
if partial_path == '':
return ["'"]
return ()
@cqlsh_syntax_completer('copyCommand', 'colnames')
def complete_copy_column_names(ctxt, cqlsh):
existcols = map(cqlsh.cql_unprotect_name, ctxt.get_binding('colnames', ()))
ks = cqlsh.cql_unprotect_name(ctxt.get_binding('ksname', None))
cf = cqlsh.cql_unprotect_name(ctxt.get_binding('cfname'))
colnames = cqlsh.get_column_names(ks, cf)
if len(existcols) == 0:
return [colnames[0]]
return set(colnames[1:]) - set(existcols)
COPY_COMMON_OPTIONS = ['DELIMITER', 'QUOTE', 'ESCAPE', 'HEADER', 'NULL', 'DATETIMEFORMAT',
'MAXATTEMPTS', 'REPORTFREQUENCY', 'DECIMALSEP', 'THOUSANDSSEP', 'BOOLSTYLE',
'NUMPROCESSES', 'CONFIGFILE', 'RATEFILE']
COPY_FROM_OPTIONS = ['CHUNKSIZE', 'INGESTRATE', 'MAXBATCHSIZE', 'MINBATCHSIZE', 'MAXROWS',
'SKIPROWS', 'SKIPCOLS', 'MAXPARSEERRORS', 'MAXINSERTERRORS', 'ERRFILE', 'PREPAREDSTATEMENTS']
COPY_TO_OPTIONS = ['ENCODING', 'PAGESIZE', 'PAGETIMEOUT', 'BEGINTOKEN', 'ENDTOKEN', 'MAXOUTPUTSIZE', 'MAXREQUESTS']
@cqlsh_syntax_completer('copyOption', 'optnames')
def complete_copy_options(ctxt, cqlsh):
optnames = map(str.upper, ctxt.get_binding('optnames', ()))
direction = ctxt.get_binding('dir').upper()
if direction == 'FROM':
opts = set(COPY_COMMON_OPTIONS + COPY_FROM_OPTIONS) - set(optnames)
elif direction == 'TO':
opts = set(COPY_COMMON_OPTIONS + COPY_TO_OPTIONS) - set(optnames)
return opts
@cqlsh_syntax_completer('copyOption', 'optvals')
def complete_copy_opt_values(ctxt, cqlsh):
optnames = ctxt.get_binding('optnames', ())
lastopt = optnames[-1].lower()
if lastopt == 'header':
return ['true', 'false']
return [cqlhandling.Hint('<single_character_string>')]
class NoKeyspaceError(Exception):
pass
class KeyspaceNotFound(Exception):
pass
class ColumnFamilyNotFound(Exception):
pass
class IndexNotFound(Exception):
pass
class ObjectNotFound(Exception):
pass
class VersionNotSupported(Exception):
pass
class UserTypeNotFound(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(map(int, ver_parts[0].split('.')) + [ver_parts[1]])
return ver, vertuple
def format_value(val, output_encoding, addcolor=False, 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(type(val), val, output_encoding, colormap=colormap,
addcolor=addcolor, nullval=nullval, time_format=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():
extend_cql_deserialization()
auto_format_udts()
def extend_cql_deserialization():
"""
The python driver returns BLOBs as string, but we expect them as bytearrays; therefore we change
the implementation of cassandra.cqltypes.BytesType.deserialize.
The deserializers package exists only when the driver has been compiled with cython extensions and
cassandra.deserializers.DesBytesType replaces cassandra.cqltypes.BytesType.deserialize.
DesBytesTypeByteArray is a fast deserializer that converts blobs into bytearrays but it was
only introduced recently (3.1.0). If it is available we use it, otherwise we remove
cassandra.deserializers.DesBytesType so that we fall back onto cassandra.cqltypes.BytesType.deserialize
just like in the case where no cython extensions are present.
"""
if hasattr(cassandra, 'deserializers'):
if hasattr(cassandra.deserializers, 'DesBytesTypeByteArray'):
cassandra.deserializers.DesBytesType = cassandra.deserializers.DesBytesTypeByteArray
else:
del cassandra.deserializers.DesBytesType
cassandra.cqltypes.BytesType.deserialize = staticmethod(lambda byts, protocol_version: bytearray(byts))
cassandra.cqltypes.CassandraType.support_empty_values = True
def auto_format_udts():
# when we see a new user defined type, set up the shell formatting for it
udt_apply_params = cassandra.cqltypes.UserType.apply_parameters
def new_apply_params(cls, *args, **kwargs):
udt_class = udt_apply_params(*args, **kwargs)
formatter_for(udt_class.typename)(format_value_utype)
return udt_class
cassandra.cqltypes.UserType.udt_apply_parameters = classmethod(new_apply_params)
make_udt_class = cassandra.cqltypes.UserType.make_udt_class
def new_make_udt_class(cls, *args, **kwargs):
udt_class = make_udt_class(*args, **kwargs)
formatter_for(udt_class.tuple_type.__name__)(format_value_utype)
return udt_class
cassandra.cqltypes.UserType.make_udt_class = classmethod(new_make_udt_class)
class FrozenType(cassandra.cqltypes._ParameterizedType):
"""
Needed until the bundled python driver adds FrozenType.
"""
typename = "frozen"
num_subtypes = 1
@classmethod
def deserialize_safe(cls, byts, protocol_version):
subtype, = cls.subtypes
return subtype.from_binary(byts)
@classmethod
def serialize_safe(cls, val, protocol_version):
subtype, = cls.subtypes
return subtype.to_binary(val, protocol_version)
class Shell(cmd.Cmd):
custom_prompt = os.getenv('CQLSH_PROMPT', '')
if custom_prompt is not '':
custom_prompt += "\n"
default_prompt = custom_prompt + "cqlsh> "
continue_prompt = " ... "
keyspace_prompt = custom_prompt + "cqlsh:%s> "
keyspace_continue_prompt = "%s ... "
show_line_nums = False
debug = False
stop = False
last_hist = None
shunted_query_out = None
use_paging = True
default_page_size = 100
def __init__(self, hostname, port, color=False,
username=None, password=None, encoding=None, stdin=None, tty=True,
completekey=DEFAULT_COMPLETEKEY, use_conn=None,
cqlver=DEFAULT_CQLVER, keyspace=None,
tracing_enabled=False, expand_enabled=False,
display_time_format=DEFAULT_TIME_FORMAT,
display_float_precision=DEFAULT_FLOAT_PRECISION,
max_trace_wait=DEFAULT_MAX_TRACE_WAIT,
ssl=False,
single_statement=None,
request_timeout=DEFAULT_REQUEST_TIMEOUT_SECONDS,
connect_timeout=DEFAULT_CONNECT_TIMEOUT_SECONDS):
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.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=DEFAULT_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]),
connect_timeout=connect_timeout)
self.owns_connection = not use_conn
self.set_expanded_cql_version(cqlver)
if keyspace:
self.session = self.conn.connect(keyspace)
else:
self.session = self.conn.connect()
self.color = color
self.display_time_format = display_time_format
self.display_float_precision = display_float_precision
# If there is no schema metadata present (due to a schema mismatch), force schema refresh
if not self.conn.metadata.keyspaces:
self.refresh_schema_metadata_best_effort()
self.session.default_timeout = request_timeout
self.session.row_factory = ordered_dict_factory
self.get_connection_versions()
self.current_keyspace = keyspace
self.max_trace_wait = max_trace_wait
self.session.max_trace_wait = max_trace_wait
if encoding is None:
encoding = locale.getpreferredencoding()
if encoding is None:
encoding = 'utf-8'
self.encoding = 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
self.tty = tty
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.ONE
self.serial_consistency_level = cassandra.ConsistencyLevel.SERIAL
self.empty_lines = 0
self.statement_error = False
self.single_statement = single_statement
def refresh_schema_metadata_best_effort(self):
try:
self.conn.refresh_schema_metadata(5) # will throw exception if there is a schema mismatch
except Exception:
self.printerr("Warning: schema version mismatch detected, which might be caused by DOWN nodes; if "
"this is not the case, check the schema versions of your nodes in system.local and "
"system.peers.")
self.conn.refresh_schema_metadata(0)
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, **kwargs):
if isinstance(val, DecodeError):
self.decoding_errors.append(val)
try:
return format_value(val, self.output_codec.name,
addcolor=self.color, time_format=self.display_time_format,
float_precision=self.display_float_precision, **kwargs)
except Exception, e:
err = FormatError(val, e)
self.decoding_errors.append(err)
return format_value(err, 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
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 "[cqlsh %(shver)s | Cassandra %(build)s | CQL spec %(cql)s | Native protocol v%(protocol)s]" % vers
def show_session(self, sessionid):
print_trace_session(self, self.session, sessionid)
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 map(str, self.conn.metadata.keyspaces.keys())
def get_columnfamily_names(self, ksname=None):
if ksname is None:
ksname = self.current_keyspace
return map(str, self.get_keyspace_meta(ksname).tables.keys())
def get_index_names(self, ksname=None):
if ksname is None:
ksname = self.current_keyspace
return map(str, 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 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:
raise UserTypeNotFound("User type %r not found" % typename)
return [(field_name, field_type.cql_parameterized_type())
for field_name, field_type in zip(user_type.field_names, user_type.field_types)]
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:
raise KeyspaceNotFound('Keyspace %r not found.' % ksname)
return self.conn.metadata.keyspaces[ksname]
def get_keyspaces(self):
return 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:
raise ColumnFamilyNotFound("Column family %r not found" % tablename)
return ksmeta.tables[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:
raise IndexNotFound("Index %r not found" % idxname)
return ksmeta.indexes[idxname]
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:
raise 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]
raise 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 self.get_keyspace_meta(ksname).tables.values()
for trigger in table.triggers.values()]
def reset_statement(self):
self.reset_prompt()
self.statement.truncate(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 platform.system() == 'Windows':
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 = raw_input(prompt).decode(self.encoding)
line = self.lastcmd + '\n'
else:
self.lastcmd = 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, cqlerr:
self.printerr(str(cqlerr))
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).
"""
try:
statements, in_batch = cqlruleset.cql_split_statements(statementtext)
except pylexotron.LexingError, 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 in_batch or statements[-1][-1][0] != 'endtoken':
self.set_continue_prompt()
return
for st in statements:
try:
self.handle_statement(st, statementtext)
except Exception, 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))
def handle_parse_error(self, cmdword, tokens, parsed, srcstr):
if cmdword.lower() in ('select', 'insert', 'update', 'delete', 'truncate',
'create', 'drop', 'alter', 'grant', 'revoke',
'batch', 'list'):
# hey, maybe they know about some new syntax we don't. type
# assumptions won't work, but maybe the query will.
return self.perform_statement(cqlruleset.cql_extract_orig(tokens, srcstr))
if parsed:
self.printerr('Improper %s command (problem at %r).' % (cmdword, parsed.remainder[0]))
else:
self.printerr('Improper %s command.' % cmdword)
def do_use(self, parsed):
ksname = parsed.get_binding('ksname')
if self.perform_simple_statement(SimpleStatement(parsed.extract_orig())):
if ksname[0] == '"' and ksname[-1] == '"':
self.current_keyspace = self.cql_unprotect_name(ksname)
else:
self.current_keyspace = ksname.lower()
def do_select(self, parsed):
tracing_was_enabled = self.tracing_enabled
ksname = parsed.get_binding('ksname')
stop_tracing = ksname == 'system_traces' or (ksname is None and self.current_keyspace == 'system_traces')
self.tracing_enabled = self.tracing_enabled and not stop_tracing
statement = parsed.extract_orig()
self.perform_statement(statement)
self.tracing_enabled = tracing_was_enabled
def perform_statement(self, statement):
stmt = SimpleStatement(statement, consistency_level=self.consistency_level, serial_consistency_level=self.serial_consistency_level, fetch_size=self.default_page_size if self.use_paging else None)
result = self.perform_simple_statement(stmt)
if self.tracing_enabled:
if stmt.trace:
print_trace(self, stmt.trace)
else:
msg = "Statement trace did not complete within %d seconds" % (self.session.max_trace_wait)
self.writeresult(msg, color=RED)
return result
def parse_for_table_meta(self, query_string):
try:
parsed = cqlruleset.cql_parse(query_string)[1]
except IndexError:
return None
ks = self.cql_unprotect_name(parsed.get_binding('ksname', None))
cf = self.cql_unprotect_name(parsed.get_binding('cfname'))
return self.get_table_meta(ks, cf)
def perform_simple_statement(self, statement):
if not statement:
return False
rows = None
while True:
try:
rows = self.session.execute(statement, trace=self.tracing_enabled)
break
except cassandra.OperationTimedOut, err:
self.refresh_schema_metadata_best_effort()
self.printerr(str(err.__class__.__name__) + ": " + str(err))
return False
except CQL_ERRORS, err:
self.printerr(str(err.__class__.__name__) + ": " + str(err))
return False
except Exception, err:
import traceback
self.printerr(traceback.format_exc())
return False
if statement.query_string[:6].lower() == 'select':
self.print_result(rows, self.parse_for_table_meta(statement.query_string))
elif statement.query_string.lower().startswith("list users"):
self.print_result(rows, self.get_table_meta('system_auth', 'users'))
elif statement.query_string.lower().startswith("list"):
self.print_result(rows, self.get_table_meta('system_auth', 'permissions'))
elif rows:
# CAS INSERT/UPDATE
self.writeresult("")
self.print_static_result(rows, self.parse_for_table_meta(statement.query_string))
self.flush_output()
return True
def print_result(self, rows, table_meta):
self.decoding_errors = []
self.writeresult("")
if isinstance(rows, PagedResult) and self.tty:
num_rows = 0
while True:
page = list(rows.current_response)
if not page:
break
num_rows += len(page)
self.print_static_result(page, table_meta)
if not rows.response_future.has_more_pages:
break
raw_input("---MORE---")
rows.response_future.start_fetching_next_page()
result = rows.response_future.result()
if rows.response_future.has_more_pages:
rows.current_response = result.current_response
else:
rows.current_response = iter(result)
else:
rows = list(rows or [])
num_rows = len(rows)
self.print_static_result(rows, table_meta)
self.writeresult("(%d rows)" % num_rows)
if self.decoding_errors:
for err in self.decoding_errors[:2]:
self.writeresult(err.message(), color=RED)
if len(self.decoding_errors) > 2:
self.writeresult('%d more decoding errors suppressed.'
% (len(self.decoding_errors) - 2), color=RED)
def print_static_result(self, rows, table_meta):
if not rows:
if not table_meta:
return
# print header only
colnames = table_meta.columns.keys() # full header
formatted_names = [self.myformat_colname(name, table_meta) for name in colnames]
self.print_formatted_result(formatted_names, None)
return
colnames = rows[0].keys()
formatted_names = [self.myformat_colname(name, table_meta) for name in colnames]
formatted_values = [map(self.myformat_value, row.values()) for row in rows]
if self.expand_enabled:
self.print_formatted_result_vertically(formatted_names, formatted_values)
else:
self.print_formatted_result(formatted_names, formatted_values)
def print_formatted_result(self, formatted_names, formatted_values):
# determine column widths
widths = [n.displaywidth for n in formatted_names]
if formatted_values is not None:
for fmtrow in formatted_values:
for num, col in enumerate(fmtrow):
widths[num] = max(widths[num], col.displaywidth)
# print header
header = ' | '.join(hdr.ljust(w, color=self.color) for (hdr, w) in zip(formatted_names, widths))
self.writeresult(' ' + header.rstrip())
self.writeresult('-%s-' % '-+-'.join('-' * w for w in widths))
# stop if there are no rows
if formatted_values is None:
self.writeresult("")
return
# print row data
for row in formatted_values:
line = ' | '.join(col.rjust(w, color=self.color) for (col, w) in zip(row, widths))
self.writeresult(' ' + line)
self.writeresult("")
def print_formatted_result_vertically(self, formatted_names, formatted_values):
max_col_width = max([n.displaywidth for n in formatted_names])
max_val_width = max([n.displaywidth for row in formatted_values for n in row])
# for each row returned, list all the column-value pairs
for row_id, row in enumerate(formatted_values):
self.writeresult("@ Row %d" % (row_id + 1))
self.writeresult('-%s-' % '-+-'.join(['-' * max_col_width, '-' * max_val_width]))
for field_id, field in enumerate(row):
column = formatted_names[field_id].ljust(max_col_width, color=self.color)
value = field.ljust(field.displaywidth, color=self.color)
self.writeresult(' ' + " | ".join([column, value]))
self.writeresult('')
def emptyline(self):
pass
def parseline(self, line):
# this shouldn't be needed
raise NotImplementedError
def complete(self, text, state):
if readline is None:
return
if state == 0:
try:
self.completion_matches = self.find_completions(text)
except Exception:
if debug_completion:
import traceback
traceback.print_exc()
else:
raise
try:
return self.completion_matches[state]
except IndexError:
return None
def find_completions(self, text):
curline = readline.get_line_buffer()
prevlines = self.statement.getvalue()
wholestmt = prevlines + curline
begidx = readline.get_begidx() + len(prevlines)
stuff_to_complete = wholestmt[:begidx]
return cqlruleset.cql_complete(stuff_to_complete, text, cassandra_conn=self,
debug=debug_completion, startsymbol='cqlshCommand')
def set_prompt(self, prompt, prepend_user=False):
if prepend_user and self.username:
self.prompt = "%s@%s" % (self.username, prompt)
return
self.prompt = prompt
def cql_unprotect_name(self, namestr):
if namestr is None:
return
return cqlruleset.dequote_name(namestr)
def cql_unprotect_value(self, valstr):
if valstr is not None:
return cqlruleset.dequote_value(valstr)
def print_recreate_keyspace(self, ksdef, out):
out.write(ksdef.export_as_string())
out.write("\n")
def print_recreate_columnfamily(self, ksname, cfname, out):
"""
Output CQL commands which should be pasteable back into a CQL session
to recreate the given table.
Writes output to the given out stream.
"""
out.write(self.get_table_meta(ksname, cfname).export_as_string())
out.write("\n")
def print_recreate_index(self, ksname, idxname, out):
"""
Output CQL commands which should be pasteable back into a CQL session
to recreate the given index.
Writes output to the given out stream.
"""
out.write(self.get_index_meta(ksname, idxname).export_as_string())
out.write("\n")
def print_recreate_object(self, ks, name, out):
"""
Output CQL commands which should be pasteable back into a CQL session
to recreate the given object (ks, table or index).
Writes output to the given out stream.
"""
out.write(self.get_object_meta(ks, name).export_as_string())
out.write("\n")
def describe_keyspaces(self):
print
cmd.Cmd.columnize(self, protect_names(self.get_keyspace_names()))
print
def describe_keyspace(self, ksname):
print
self.print_recreate_keyspace(self.get_keyspace_meta(ksname), sys.stdout)
print
def describe_columnfamily(self, ksname, cfname):
if ksname is None:
ksname = self.current_keyspace
print
self.print_recreate_columnfamily(ksname, cfname, sys.stdout)
print
def describe_index(self, ksname, idxname):
print
self.print_recreate_index(ksname, idxname, sys.stdout)
print
def describe_object(self, ks, name):
print
self.print_recreate_object(ks, name, sys.stdout)
print
def describe_columnfamilies(self, ksname):
print
if ksname is None:
for k in self.get_keyspaces():
name = protect_name(k.name)
print 'Keyspace %s' % (name,)
print '---------%s' % ('-' * len(name))
cmd.Cmd.columnize(self, protect_names(self.get_columnfamily_names(k.name)))
print
else:
cmd.Cmd.columnize(self, protect_names(self.get_columnfamily_names(ksname)))
print
def describe_usertypes(self, ksname):
print
if ksname is None:
for ksmeta in self.get_keyspaces():
name = protect_name(ksmeta.name)
print 'Keyspace %s' % (name,)
print '---------%s' % ('-' * len(name))
cmd.Cmd.columnize(self, protect_names(ksmeta.user_types.keys()))
print
else:
ksmeta = self.get_keyspace_meta(ksname)
cmd.Cmd.columnize(self, protect_names(ksmeta.user_types.keys()))
print
def describe_usertype(self, ksname, typename):
if ksname is None:
ksname = self.current_keyspace
print
ksmeta = self.get_keyspace_meta(ksname)
try:
usertype = ksmeta.user_types[typename]
except KeyError:
raise UserTypeNotFound("User type %r not found" % typename)
print usertype.as_cql_query(formatted=True)
print
def describe_cluster(self):
print '\nCluster: %s' % self.get_cluster_name()
p = trim_if_present(self.get_partitioner(), 'org.apache.cassandra.dht.')
print 'Partitioner: %s\n' % p
# TODO: snitch?
# snitch = trim_if_present(self.get_snitch(), 'org.apache.cassandra.locator.')
# print 'Snitch: %s\n' % snitch
if self.current_keyspace is not None and self.current_keyspace != 'system':
print "Range ownership:"
ring = self.get_ring(self.current_keyspace)
for entry in ring.items():
print ' %39s [%s]' % (str(entry[0].value), ', '.join([host.address for host in entry[1]]))
print
def describe_schema(self, include_system=False):
print
for k in self.get_keyspaces():
if include_system or k.name not in SYSTEM_KEYSPACES:
self.print_recreate_keyspace(k, sys.stdout)
print
def do_describe(self, parsed):
"""
DESCRIBE [cqlsh only]
(DESC may be used as a shorthand.)
Outputs information about the connected Cassandra cluster, or about
the data objects stored in the cluster. Use in one of the following ways:
DESCRIBE KEYSPACES
Output the names of all keyspaces.
DESCRIBE KEYSPACE [<keyspacename>]
Output CQL commands that could be used to recreate the given keyspace,
and the objects in it (such as tables, types, etc.).
In some cases, as the CQL interface matures, there will be some metadata
about a keyspace that is not representable with CQL. That metadata will not be shown.
The '<keyspacename>' argument may be omitted, in which case the current
keyspace will be described.
DESCRIBE TABLES
Output the names of all tables in the current keyspace, or in all
keyspaces if there is no current keyspace.
DESCRIBE TABLE [<keyspace>.]<tablename>
Output CQL commands that could be used to recreate the given table.
In some cases, as above, there may be table metadata which is not
representable and which will not be shown.
DESCRIBE INDEX <indexname>
Output the CQL command that could be used to recreate the given index.
In some cases, there may be index metadata which is not representable
and which will not be shown.
DESCRIBE CLUSTER
Output information about the connected Cassandra cluster, such as the
cluster name, and the partitioner and snitch in use. When you are
connected to a non-system keyspace, also shows endpoint-range
ownership information for the Cassandra ring.
DESCRIBE [FULL] SCHEMA
Output CQL commands that could be used to recreate the entire (non-system) schema.
Works as though "DESCRIBE KEYSPACE k" was invoked for each non-system keyspace
k. Use DESCRIBE FULL SCHEMA to include the system keyspaces.
DESCRIBE TYPES
Output the names of all user-defined-types in the current keyspace, or in all
keyspaces if there is no current keyspace.
DESCRIBE TYPE [<keyspace>.]<type>
Output the CQL command that could be used to recreate the given user-defined-type.
DESCRIBE <objname>
Output CQL commands that could be used to recreate the entire object schema,
where object can be either a keyspace or a table or an index (in this order).
"""
what = parsed.matched[1][1].lower()
if what == 'keyspaces':
self.describe_keyspaces()
elif what == 'keyspace':
ksname = self.cql_unprotect_name(parsed.get_binding('ksname', ''))
if not ksname:
ksname = self.current_keyspace
if ksname is None:
self.printerr('Not in any keyspace.')
return
self.describe_keyspace(ksname)
elif what in ('columnfamily', 'table'):
ks = self.cql_unprotect_name(parsed.get_binding('ksname', None))
cf = self.cql_unprotect_name(parsed.get_binding('cfname'))
self.describe_columnfamily(ks, cf)
elif what == 'index':
ks = self.cql_unprotect_name(parsed.get_binding('ksname', None))
idx = self.cql_unprotect_name(parsed.get_binding('idxname', None))
self.describe_index(ks, idx)
elif what in ('columnfamilies', 'tables'):
self.describe_columnfamilies(self.current_keyspace)
elif what == 'types':
self.describe_usertypes(self.current_keyspace)
elif what == 'type':
ks = self.cql_unprotect_name(parsed.get_binding('ksname', None))
ut = self.cql_unprotect_name(parsed.get_binding('utname'))
self.describe_usertype(ks, ut)
elif what == 'cluster':
self.describe_cluster()
elif what == 'schema':
self.describe_schema(False)
elif what == 'full' and parsed.matched[2][1].lower() == 'schema':
self.describe_schema(True)
elif what:
ks = self.cql_unprotect_name(parsed.get_binding('ksname', None))
name = self.cql_unprotect_name(parsed.get_binding('cfname'))
if not name:
name = self.cql_unprotect_name(parsed.get_binding('idxname', None))
self.describe_object(ks, name)
do_desc = do_describe
def do_copy(self, parsed):
r"""
COPY [cqlsh only]
COPY x FROM: Imports CSV data into a Cassandra table
COPY x TO: Exports data from a Cassandra table in CSV format.
COPY <table_name> [ ( column [, ...] ) ]
FROM ( '<file_pattern_1, file_pattern_2, ... file_pattern_n>' | STDIN )
[ WITH <option>='value' [AND ...] ];
File patterns are either file names or valid python glob expressions, e.g. *.csv or folder/*.csv.
COPY <table_name> [ ( column [, ...] ) ]
TO ( '<filename>' | STDOUT )
[ WITH <option>='value' [AND ...] ];
Available common COPY options and defaults:
DELIMITER=',' - character that appears between records
QUOTE='"' - quoting character to be used to quote fields
ESCAPE='\' - character to appear before the QUOTE char when quoted
HEADER=false - whether to ignore the first line
NULL='' - string that represents a null value
DATETIMEFORMAT= - timestamp strftime format
'%Y-%m-%d %H:%M:%S%z' defaults to time_format value in cqlshrc
MAXATTEMPTS=5 - the maximum number of attempts per batch or range
REPORTFREQUENCY=0.25 - the frequency with which we display status updates in seconds
DECIMALSEP='.' - the separator for decimal values
THOUSANDSSEP='' - the separator for thousands digit groups
BOOLSTYLE='True,False' - the representation for booleans, case insensitive, specify true followed by false,
for example yes,no or 1,0
NUMPROCESSES=n - the number of worker processes, by default the number of cores minus one
capped at 16
CONFIGFILE='' - a configuration file with the same format as .cqlshrc (see the Python ConfigParser
documentation) where you can specify WITH options under the following optional
sections: [copy], [copy-to], [copy-from], [copy:ks.table], [copy-to:ks.table],
[copy-from:ks.table], where <ks> is your keyspace name and <table> is your table
name. Options are read from these sections, in the order specified
above, and command line options always override options in configuration files.
Depending on the COPY direction, only the relevant copy-from or copy-to sections
are used. If no configfile is specified then .cqlshrc is searched instead.
RATEFILE='' - an optional file where to print the output statistics
Available COPY FROM options and defaults:
CHUNKSIZE=5000 - the size of chunks passed to worker processes
INGESTRATE=100000 - an approximate ingest rate in rows per second
MINBATCHSIZE=10 - the minimum size of an import batch
MAXBATCHSIZE=20 - the maximum size of an import batch
MAXROWS=-1 - the maximum number of rows, -1 means no maximum
SKIPROWS=0 - the number of rows to skip
SKIPCOLS='' - a comma separated list of column names to skip
MAXPARSEERRORS=-1 - the maximum global number of parsing errors, -1 means no maximum
MAXINSERTERRORS=-1 - the maximum global number of insert errors, -1 means no maximum
ERRFILE='' - a file where to store all rows that could not be imported, by default this is
import_ks_table.err where <ks> is your keyspace and <table> is your table name.
PREPAREDSTATEMENTS=True - whether to use prepared statements when importing, by default True. Set this to
False if you don't mind shifting data parsing to the cluster. The cluster will also
have to compile every batch statement. For large and oversized clusters
this will result in a faster import but for smaller clusters it may generate
timeouts.
Available COPY TO options and defaults:
ENCODING='utf8' - encoding for CSV output
PAGESIZE='1000' - the page size for fetching results
PAGETIMEOUT=10 - the page timeout in seconds for fetching results
BEGINTOKEN='' - the minimum token string to consider when exporting data
ENDTOKEN='' - the maximum token string to consider when exporting data
MAXREQUESTS=6 - the maximum number of requests each worker process can work on in parallel
MAXOUTPUTSIZE='-1' - the maximum size of the output file measured in number of lines,
beyond this maximum the output file will be split into segments,
-1 means unlimited.
When entering CSV data on STDIN, you can use the sequence "\."
on a line by itself to end the data input.
"""
ks = self.cql_unprotect_name(parsed.get_binding('ksname', None))
if ks is None:
ks = self.current_keyspace
if ks is None:
raise NoKeyspaceError("Not in any keyspace.")
table = self.cql_unprotect_name(parsed.get_binding('cfname'))
columns = parsed.get_binding('colnames', None)
if columns is not None:
columns = map(self.cql_unprotect_name, columns)
else:
# default to all known columns
columns = self.get_column_names(ks, table)
fname = parsed.get_binding('fname', None)
if fname is not None:
fname = self.cql_unprotect_value(fname)
copyoptnames = map(str.lower, parsed.get_binding('optnames', ()))
copyoptvals = map(self.cql_unprotect_value, parsed.get_binding('optvals', ()))
opts = dict(zip(copyoptnames, copyoptvals))
direction = parsed.get_binding('dir').upper()
if direction == 'FROM':
task = ImportTask(self, ks, table, columns, fname, opts, DEFAULT_PROTOCOL_VERSION, CONFIG_FILE)
elif direction == 'TO':
task = ExportTask(self, ks, table, columns, fname, opts, DEFAULT_PROTOCOL_VERSION, CONFIG_FILE)
else:
raise SyntaxError("Unknown direction %s" % direction)
task.run()
def do_show(self, parsed):
"""
SHOW [cqlsh only]
Displays information about the current cqlsh session. Can be called in
the following ways:
SHOW VERSION
Shows the version and build of the connected Cassandra instance, as
well as the versions of the CQL spec and the Thrift protocol that
the connected Cassandra instance understands.
SHOW HOST
Shows where cqlsh is currently connected.
SHOW SESSION <sessionid>
Pretty-prints the requested tracing session.
"""
showwhat = parsed.get_binding('what').lower()
if showwhat == 'version':
self.get_connection_versions()
self.show_version()
elif showwhat == 'host':
self.show_host()
elif showwhat.startswith('session'):
session_id = parsed.get_binding('sessionid').lower()
self.show_session(UUID(session_id))
else:
self.printerr('Wait, how do I show %r?' % (showwhat,))
def do_source(self, parsed):
"""
SOURCE [cqlsh only]
Executes a file containing CQL statements. Gives the output for each
statement in turn, if any, or any errors that occur along the way.
Errors do NOT abort execution of the CQL source file.
Usage:
SOURCE '<file>';
That is, the path to the file to be executed must be given inside a
string literal. The path is interpreted relative to the current working
directory. The tilde shorthand notation ('~/mydir') is supported for
referring to $HOME.
See also the --file option to cqlsh.
"""
fname = parsed.get_binding('fname')
fname = os.path.expanduser(self.cql_unprotect_value(fname))
try:
encoding, bom_size = get_file_encoding_bomsize(fname)
f = codecs.open(fname, 'r', encoding)
f.seek(bom_size)
except IOError, e:
self.printerr('Could not open %r: %s' % (fname, e))
return
subshell = Shell(self.hostname, self.port,
color=self.color, encoding=self.encoding, stdin=f,
tty=False, use_conn=self.conn, cqlver=self.cql_version,
keyspace=self.current_keyspace,
display_time_format=self.display_time_format,
display_float_precision=self.display_float_precision,
max_trace_wait=self.max_trace_wait)
subshell.cmdloop()
f.close()
def do_capture(self, parsed):
"""
CAPTURE [cqlsh only]
Begins capturing command output and appending it to a specified file.
Output will not be shown at the console while it is captured.
Usage:
CAPTURE '<file>';
CAPTURE OFF;
CAPTURE;
That is, the path to the file to be appended to must be given inside a
string literal. The path is interpreted relative to the current working
directory. The tilde shorthand notation ('~/mydir') is supported for
referring to $HOME.
Only query result output is captured. Errors and output from cqlsh-only
commands will still be shown in the cqlsh session.
To stop capturing output and show it in the cqlsh session again, use
CAPTURE OFF.
To inspect the current capture configuration, use CAPTURE with no
arguments.
"""
fname = parsed.get_binding('fname')
if fname is None:
if self.shunted_query_out is not None:
print "Currently capturing query output to %r." % (self.query_out.name,)
else:
print "Currently not capturing query output."
return
if fname.upper() == 'OFF':
if self.shunted_query_out is None:
self.printerr('Not currently capturing output.')
return
self.query_out.close()
self.query_out = self.shunted_query_out
self.color = self.shunted_color
self.shunted_query_out = None
del self.shunted_color
return
if self.shunted_query_out is not None:
self.printerr('Already capturing output to %s. Use CAPTURE OFF'
' to disable.' % (self.query_out.name,))
return
fname = os.path.expanduser(self.cql_unprotect_value(fname))
try:
f = open(fname, 'a')
except IOError, e:
self.printerr('Could not open %r for append: %s' % (fname, e))
return
self.shunted_query_out = self.query_out
self.shunted_color = self.color
self.query_out = f
self.color = False
print 'Now capturing query output to %r.' % (fname,)
def do_tracing(self, parsed):
"""
TRACING [cqlsh]
Enables or disables request tracing.
TRACING ON
Enables tracing for all further requests.
TRACING OFF
Disables tracing.
TRACING
TRACING with no arguments shows the current tracing status.
"""
self.tracing_enabled = SwitchCommand("TRACING", "Tracing").execute(self.tracing_enabled, parsed, self.printerr)
def do_expand(self, parsed):
"""
EXPAND [cqlsh]
Enables or disables expanded (vertical) output.
EXPAND ON
Enables expanded (vertical) output.
EXPAND OFF
Disables expanded (vertical) output.
EXPAND
EXPAND with no arguments shows the current value of expand setting.
"""
self.expand_enabled = SwitchCommand("EXPAND", "Expanded output").execute(self.expand_enabled, parsed, self.printerr)
def do_consistency(self, parsed):
"""
CONSISTENCY [cqlsh only]
Overrides default consistency level (default level is ONE).
CONSISTENCY <level>
Sets consistency level for future requests.
Valid consistency levels:
ANY, ONE, TWO, THREE, QUORUM, ALL, LOCAL_ONE, LOCAL_QUORUM, EACH_QUORUM, SERIAL and LOCAL_SERIAL.
SERIAL and LOCAL_SERIAL may be used only for SELECTs; will be rejected with updates.
CONSISTENCY
CONSISTENCY with no arguments shows the current consistency level.
"""
level = parsed.get_binding('level')
if level is None:
print 'Current consistency level is %s.' % (cassandra.ConsistencyLevel.value_to_name[self.consistency_level])
return
self.consistency_level = cassandra.ConsistencyLevel.name_to_value[level.upper()]
print 'Consistency level set to %s.' % (level.upper(),)
def do_serial(self, parsed):
"""
SERIAL CONSISTENCY [cqlsh only]
Overrides serial consistency level (default level is SERIAL).
SERIAL CONSISTENCY <level>
Sets consistency level for future conditional updates.
Valid consistency levels:
SERIAL, LOCAL_SERIAL.
SERIAL CONSISTENCY
SERIAL CONSISTENCY with no arguments shows the current consistency level.
"""
level = parsed.get_binding('level')
if level is None:
print 'Current serial consistency level is %s.' % (cassandra.ConsistencyLevel.value_to_name[self.serial_consistency_level])
return
self.serial_consistency_level = cassandra.ConsistencyLevel.name_to_value[level.upper()]
print 'Serial consistency level set to %s.' % (level.upper(),)
def do_login(self, parsed):
"""
LOGIN [cqlsh only]
Changes login information without requiring restart.
LOGIN <username> (<password>)
Login using the specified username. If password is specified, it will be used
otherwise, you will be prompted to enter.
"""
username = parsed.get_binding('username')
password = parsed.get_binding('password')
if password is None:
password = getpass.getpass()
else:
password = password[1:-1]
auth_provider = PlainTextAuthProvider(username=username, password=password)
conn = Cluster(contact_points=(self.hostname,), port=self.port, cql_version=self.conn.cql_version,
protocol_version=DEFAULT_PROTOCOL_VERSION,
auth_provider=auth_provider,
ssl_options=self.conn.ssl_options,
load_balancing_policy=WhiteListRoundRobinPolicy([self.hostname]),
connect_timeout=self.conn.connect_timeout)
if self.current_keyspace:
session = conn.connect(self.current_keyspace)
else:
session = conn.connect()
# Update after we've connected in case we fail to authenticate
self.conn = conn
self.auth_provider = auth_provider
self.username = username
self.session = session
def do_exit(self, parsed=None):
"""
EXIT/QUIT [cqlsh only]
Exits cqlsh.
"""
self.stop = True
if self.owns_connection:
self.conn.shutdown()
do_quit = do_exit
def do_debug(self, parsed):
import pdb
pdb.set_trace()
def get_help_topics(self):
topics = [t[3:] for t in dir(self) if t.startswith('do_') and getattr(self, t, None).__doc__]
for hide_from_help in ('quit',):
topics.remove(hide_from_help)
return topics
def columnize(self, slist, *a, **kw):
return cmd.Cmd.columnize(self, sorted([u.upper() for u in slist]), *a, **kw)
def do_help(self, parsed):
"""
HELP [cqlsh only]
Gives information about cqlsh commands. To see available topics,
enter "HELP" without any arguments. To see help on a topic,
use "HELP <topic>".
"""
topics = parsed.get_binding('topic', ())
if not topics:
shell_topics = [t.upper() for t in self.get_help_topics()]
self.print_topics("\nDocumented shell commands:", shell_topics, 15, 80)
cql_topics = [t.upper() for t in cqldocs.get_help_topics()]
self.print_topics("CQL help topics:", cql_topics, 15, 80)
return
for t in topics:
if t.lower() in self.get_help_topics():
doc = getattr(self, 'do_' + t.lower()).__doc__
self.stdout.write(doc + "\n")
elif t.lower() in cqldocs.get_help_topics():
cqldocs.print_help_topic(t)
else:
self.printerr("*** No help on %s" % (t,))
def do_paging(self, parsed):
"""
PAGING [cqlsh]
Enables or disables query paging.
PAGING ON
Enables query paging for all further queries.
PAGING OFF
Disables paging.
PAGING
PAGING with no arguments shows the current query paging status.
"""
self.use_paging = SwitchCommand("PAGING", "Query paging").execute(self.use_paging, parsed, self.printerr)
def applycolor(self, text, color=None):
if not color or not self.color:
return text
return color + text + ANSI_RESET
def writeresult(self, text, color=None, newline=True, out=None):
if out is None:
out = self.query_out
out.write(self.applycolor(str(text), color) + ('\n' if newline else ''))
def flush_output(self):
self.query_out.flush()
def printerr(self, text, color=RED, newline=True, shownum=None):
self.statement_error = True
if shownum is None:
shownum = self.show_line_nums
if shownum:
text = '%s:%d:%s' % (self.stdin.name, self.lineno, text)
self.writeresult(text, color, newline=newline, out=sys.stderr)
class SwitchCommand(object):
command = None
description = None
def __init__(self, command, desc):
self.command = command
self.description = desc
def execute(self, state, parsed, printerr):
switch = parsed.get_binding('switch')
if switch is None:
if state:
print "%s is currently enabled. Use %s OFF to disable" \
% (self.description, self.command)
else:
print "%s is currently disabled. Use %s ON to enable." \
% (self.description, self.command)
return state
if switch.upper() == 'ON':
if state:
printerr('%s is already enabled. Use %s OFF to disable.'
% (self.description, self.command))
return state
print 'Now %s is enabled' % (self.description,)
return True
if switch.upper() == 'OFF':
if not state:
printerr('%s is not enabled.' % (self.description,))
return state
print 'Disabled %s.' % (self.description,)
return False
def option_with_default(cparser_getter, section, option, default=None):
try:
return cparser_getter(section, option)
except ConfigParser.Error:
return default
def raw_option_with_default(configs, section, option, default=None):
"""
Same (almost) as option_with_default() but won't do any string interpolation.
Useful for config values that include '%' symbol, e.g. time format string.
"""
try:
return configs.get(section, option, raw=True)
except ConfigParser.Error:
return default
def should_use_color():
if not sys.stdout.isatty():
return False
if os.environ.get('TERM', '') in ('dumb', ''):
return False
try:
import subprocess
p = subprocess.Popen(['tput', 'colors'], stdout=subprocess.PIPE)
stdout, _ = p.communicate()
if int(stdout.strip()) < 8:
return False
except (OSError, ImportError, ValueError):
# oh well, we tried. at least we know there's a $TERM and it's
# not "dumb".
pass
return True
def read_options(cmdlineargs, environment):
configs = ConfigParser.SafeConfigParser()
configs.read(CONFIG_FILE)
rawconfigs = ConfigParser.RawConfigParser()
rawconfigs.read(CONFIG_FILE)
optvalues = optparse.Values()
optvalues.username = option_with_default(configs.get, 'authentication', 'username')
optvalues.password = option_with_default(rawconfigs.get, 'authentication', 'password')
optvalues.keyspace = option_with_default(configs.get, 'authentication', 'keyspace')
optvalues.completekey = option_with_default(configs.get, 'ui', 'completekey',
DEFAULT_COMPLETEKEY)
optvalues.color = option_with_default(configs.getboolean, 'ui', 'color')
optvalues.time_format = raw_option_with_default(configs, 'ui', 'time_format',
DEFAULT_TIME_FORMAT)
optvalues.float_precision = option_with_default(configs.getint, 'ui', 'float_precision',
DEFAULT_FLOAT_PRECISION)
optvalues.field_size_limit = option_with_default(configs.getint, 'csv', 'field_size_limit', csv.field_size_limit())
optvalues.max_trace_wait = option_with_default(configs.getfloat, 'tracing', 'max_trace_wait',
DEFAULT_MAX_TRACE_WAIT)
optvalues.debug = False
optvalues.file = None
optvalues.ssl = False
optvalues.encoding = None
optvalues.tty = sys.stdin.isatty()
optvalues.cqlversion = option_with_default(configs.get, 'cql', 'version', DEFAULT_CQLVER)
optvalues.connect_timeout = option_with_default(configs.getint, 'connection', 'timeout', DEFAULT_CONNECT_TIMEOUT_SECONDS)
optvalues.request_timeout = option_with_default(configs.getint, 'connection', 'request_timeout', DEFAULT_CONNECT_TIMEOUT_SECONDS)
optvalues.execute = None
(options, arguments) = parser.parse_args(cmdlineargs, values=optvalues)
hostname = option_with_default(configs.get, 'connection', 'hostname', DEFAULT_HOST)
port = option_with_default(configs.get, 'connection', 'port', DEFAULT_PORT)
try:
options.connect_timeout = int(options.connect_timeout)
except ValueError:
parser.error('"%s" is not a valid connect timeout.' % (options.connect_timeout,))
options.connect_timeout = DEFAULT_CONNECT_TIMEOUT_SECONDS
try:
options.request_timeout = int(options.request_timeout)
except ValueError:
parser.error('"%s" is not a valid request timeout.' % (options.request_timeout,))
options.request_timeout = DEFAULT_REQUEST_TIMEOUT_SECONDS
hostname = environment.get('CQLSH_HOST', hostname)
port = environment.get('CQLSH_PORT', port)
if len(arguments) > 0:
hostname = arguments[0]
if len(arguments) > 1:
port = arguments[1]
if options.file or options.execute:
options.tty = False
if options.execute and not options.execute.endswith(';'):
options.execute += ';'
if optvalues.color in (True, False):
options.color = optvalues.color
else:
if options.file is not None:
options.color = False
else:
options.color = should_use_color()
options.cqlversion, cqlvertup = full_cql_version(options.cqlversion)
if cqlvertup[0] < 3:
parser.error('%r is not a supported CQL version.' % options.cqlversion)
else:
options.cqlmodule = cql3handling
try:
port = int(port)
except ValueError:
parser.error('%r is not a valid port number.' % port)
return options, hostname, port
def setup_cqlruleset(cqlmodule):
global cqlruleset
cqlruleset = cqlmodule.CqlRuleSet
cqlruleset.append_rules(cqlsh_extra_syntax_rules)
for rulename, termname, func in cqlsh_syntax_completers:
cqlruleset.completer_for(rulename, termname)(func)
cqlruleset.commands_end_with_newline.update(my_commands_ending_with_newline)
def setup_cqldocs(cqlmodule):
global cqldocs
cqldocs = cqlmodule.cqldocs
def init_history():
if readline is not None:
try:
readline.read_history_file(HISTORY)
except IOError:
pass
delims = readline.get_completer_delims()
delims.replace("'", "")
delims += '.'
readline.set_completer_delims(delims)
def save_history():
if readline is not None:
try:
readline.write_history_file(HISTORY)
except IOError:
pass
def main(options, hostname, port):
setup_cqlruleset(options.cqlmodule)
setup_cqldocs(options.cqlmodule)
init_history()
csv.field_size_limit(options.field_size_limit)
if options.file is None:
stdin = None
else:
try:
encoding, bom_size = get_file_encoding_bomsize(options.file)
stdin = codecs.open(options.file, 'r', encoding)
stdin.seek(bom_size)
except IOError, e:
sys.exit("Can't open %r: %s" % (options.file, e))
if options.debug:
sys.stderr.write("Using CQL driver: %s\n" % (cassandra,))
sys.stderr.write("Using connect timeout: %s seconds\n" % (options.connect_timeout,))
try:
shell = Shell(hostname,
port,
color=options.color,
username=options.username,
password=options.password,
stdin=stdin,
tty=options.tty,
completekey=options.completekey,
cqlver=options.cqlversion,
keyspace=options.keyspace,
display_time_format=options.time_format,
display_float_precision=options.float_precision,
max_trace_wait=options.max_trace_wait,
ssl=options.ssl,
single_statement=options.execute,
request_timeout=options.request_timeout,
connect_timeout=options.connect_timeout,
encoding=options.encoding)
except KeyboardInterrupt:
sys.exit('Connection aborted.')
except CQL_ERRORS, e:
sys.exit('Connection error: %s' % (e,))
except VersionNotSupported, e:
sys.exit('Unsupported CQL version: %s' % (e,))
if options.debug:
shell.debug = True
shell.cmdloop()
save_history()
batch_mode = options.file or options.execute
if batch_mode and shell.statement_error:
sys.exit(2)
# always call this regardless of module name: when a sub-process is spawned
# on Windows then the module name is not __main__, see CASSANDRA-9304
insert_driver_hooks()
if __name__ == '__main__':
main(*read_options(sys.argv[1:], os.environ))
# vim: set ft=python et ts=4 sw=4 :