class MssqlCli(object):
max_len_prompt = 30
default_prompt = '\\d> '
def set_default_pager(self, config):
configured_pager = config['main'].get('pager')
os_environ_pager = os.environ.get('PAGER')
if configured_pager:
self.logger.info(
'Default pager found in config file: "{}"'.format(configured_pager))
os.environ['PAGER'] = configured_pager
elif os_environ_pager:
self.logger.info('Default pager found in PAGER environment variable: "{}"'.format(
os_environ_pager))
os.environ['PAGER'] = os_environ_pager
else:
self.logger.info(
'No default pager found in environment. Using os default pager')
# Set default set of less recommended options, if they are not already set.
# They are ignored if pager is different than less.
if not os.environ.get('LESS'):
os.environ['LESS'] = '-SRXF'
def __init__(self, options):
# Load config.
c = self.config = get_config(options.mssqlclirc_file)
self.initialize_logging()
self.logger = logging.getLogger(u'mssqlcli.main')
self.set_default_pager(c)
self.output_file = None
self.multi_line = c['main'].as_bool('multi_line')
self.multiline_mode = c['main'].get('multi_line_mode', 'tsql')
self.vi_mode = c['main'].as_bool('vi')
self.auto_expand = options.auto_vertical_output or c['main']['expand'] == 'auto'
self.expanded_output = c['main']['expand'] == 'always'
self.prompt_format = options.prompt or c['main'].get('prompt', self.default_prompt)
if options.row_limit is not None:
self.row_limit = options.row_limit
else:
self.row_limit = c['main'].as_int('row_limit')
self.min_num_menu_lines = c['main'].as_int('min_num_menu_lines')
self.multiline_continuation_char = c['main']['multiline_continuation_char']
self.table_format = c['main']['table_format']
self.syntax_style = c['main']['syntax_style']
self.cli_style = c['colors']
self.wider_completion_menu = c['main'].as_bool('wider_completion_menu')
self.less_chatty = bool(
options.less_chatty) or c['main'].as_bool('less_chatty')
self.null_string = c['main'].get('null_string', '<null>')
self.on_error = c['main']['on_error'].upper()
self.decimal_format = c['data_formats']['decimal']
self.float_format = c['data_formats']['float']
self.now = dt.datetime.today()
self.completion_refresher = CompletionRefresher()
self.query_history = []
# Initialize completer
smart_completion = True if c['main'].get('smart_completion', 'True') == 'True' else False
keyword_casing = c['main']['keyword_casing']
self.settings = {
'casing_file': get_casing_file(c),
'generate_casing_file': c['main'].as_bool('generate_casing_file'),
'generate_aliases': c['main'].as_bool('generate_aliases'),
'asterisk_column_order': c['main']['asterisk_column_order'],
'qualify_columns': c['main']['qualify_columns'],
'case_column_headers': c['main'].as_bool('case_column_headers'),
'search_path_filter': c['main'].as_bool('search_path_filter'),
'single_connection': False,
'less_chatty': options.less_chatty,
'keyword_casing': keyword_casing,
}
self.completer = MssqlCompleter(smart_completion=smart_completion, settings=self.settings)
self._completer_lock = threading.Lock()
self.eventloop = create_eventloop()
self.cli = None
self.integrated_auth = options.integrated_auth
self.sqltoolsclient = SqlToolsClient(enable_logging=options.enable_sqltoolsservice_logging)
self.mssqlcliclient_main = MssqlCliClient(options, self.sqltoolsclient)
def __del__(self):
# Shut-down sqltoolsservice
if self.sqltoolsclient:
self.sqltoolsclient.shutdown()
def write_to_file(self, pattern, **_):
if not pattern:
self.output_file = None
message = 'File output disabled'
return [(None, None, None, message, '', True)]
filename = os.path.abspath(os.path.expanduser(pattern))
if not os.path.isfile(filename):
try:
open(filename, 'w').close()
except IOError as e:
self.output_file = None
message = str(e) + '\nFile output disabled'
return [(None, None, None, message, '', False)]
self.output_file = filename
message = 'Writing to file "%s"' % self.output_file
return [(None, None, None, message, '', True)]
def initialize_logging(self):
log_file = self.config['main']['log_file']
if log_file == 'default':
log_file = config_location() + 'mssqlcli.log'
ensure_dir_exists(log_file)
log_level = self.config['main']['log_level']
# Disable logging if value is NONE by switching to a no-op handler.
# Set log level to a high value so it doesn't even waste cycles getting
# called.
if log_level.upper() == 'NONE':
handler = logging.NullHandler()
else:
handler = logging.FileHandler(os.path.expanduser(log_file))
level_map = {'CRITICAL': logging.CRITICAL,
'ERROR': logging.ERROR,
'WARNING': logging.WARNING,
'INFO': logging.INFO,
'DEBUG': logging.DEBUG,
'NONE': logging.CRITICAL
}
log_level = level_map[log_level.upper()]
formatter = logging.Formatter(
'%(asctime)s (%(process)d/%(threadName)s) '
'%(name)s %(levelname)s - %(message)s')
handler.setFormatter(formatter)
root_logger = logging.getLogger('mssqlcli')
root_logger.addHandler(handler)
root_logger.setLevel(log_level)
root_logger.info('Initializing mssqlcli logging.')
root_logger.debug('Log file %r.', log_file)
def set_main_mssqlcli_client(self, mssqlcli_client):
self.mssqlcliclient_main = mssqlcli_client
def connect_to_database(self):
try:
owner_uri, error_messages = self.mssqlcliclient_main.connect_to_database()
if not owner_uri and error_messages:
click.secho('\n'.join(error_messages),
err=True,
fg='yellow')
sys.exit(1)
except Exception as e:
self.logger.debug('Database connection failed: %r.', e)
self.logger.error("traceback: %r", traceback.format_exc())
click.secho(str(e), err=True, fg='yellow')
sys.exit(1)
def handle_editor_command(self, cli, document):
r"""
Editor command is any query that is prefixed or suffixed
by a '\e'. The reason for a while loop is because a user
might edit a query multiple times.
For eg:
"select * from \e"<enter> to edit it in vim, then come
back to the prompt with the edited query "select * from
blah where q = 'abc'\e" to edit it again.
:param cli: CommandLineInterface
:param document: Document
:return: Document
"""
# FIXME: using application.pre_run_callables like this here is not the best solution.
# It's internal api of prompt_toolkit that may change. This was added to fix #668.
# We may find a better way to do it in the future.
saved_callables = cli.application.pre_run_callables
while special.editor_command(document.text):
filename = special.get_filename(document.text)
query = (special.get_editor_query(document.text) or
self.get_last_query())
sql, message = special.open_external_editor(filename, sql=query)
if message:
# Something went wrong. Raise an exception and bail.
raise RuntimeError(message)
cli.current_buffer.document = Document(sql, cursor_position=len(sql))
cli.application.pre_run_callables = []
document = cli.run()
continue
cli.application.pre_run_callables = saved_callables
return document
def execute_command(self, text, query):
logger = self.logger
try:
output, query = self._evaluate_command(text)
except KeyboardInterrupt:
# Issue where Ctrl+C propagates to sql tools service process and kills it,
# so that query/cancel request can't be sent.
# Right now the sql_tools_service process is killed and we restart
# it with a new connection.
click.secho(u'Cancelling query...', err=True, fg='red')
self.reset()
logger.debug("cancelled query, sql: %r", text)
click.secho("Query cancelled.", err=True, fg='red')
except NotImplementedError:
click.secho('Not Yet Implemented.', fg="yellow")
except Exception as e:
logger.error("sql: %r, error: %r", text, e)
logger.error("traceback: %r", traceback.format_exc())
click.secho(str(e), err=True, fg='red')
else:
try:
if self.output_file and not text.startswith(('\\o ', '\\? ')):
try:
with open(self.output_file, 'a', encoding='utf-8') as f:
click.echo(text, file=f)
click.echo('\n'.join(output), file=f)
click.echo('', file=f) # extra newline
except IOError as e:
click.secho(str(e), err=True, fg='red')
else:
click.echo_via_pager('\n'.join(output))
except KeyboardInterrupt:
pass
if query.total_time > 1:
print('Time: %0.03fs (%s)' % (query.total_time,
humanize.time.naturaldelta(query.total_time)))
else:
print('Time: %0.03fs' % query.total_time)
# Check if we need to update completions, in order of most
# to least drastic changes
if query.db_changed:
with self._completer_lock:
self.completer.reset_completions()
self.refresh_completions(persist_priorities='keywords')
elif query.meta_changed:
self.refresh_completions(persist_priorities='all')
return query
def run(self):
history_file = self.config['main']['history_file']
if history_file == 'default':
history_file = config_location() + 'history'
history = MssqlFileHistory(os.path.expanduser(history_file))
self.refresh_completions(history=history,
persist_priorities='none')
self.cli = self._build_cli(history)
if not self.less_chatty:
print('Version: {}'.format(__version__))
print('Mail: [email protected]')
print('Home: http://github.com/dbcli/mssql-cli')
try:
while True:
document = self.cli.run()
# The reason we check here instead of inside the mssqlcliclient is
# because we want to raise the Exit exception which will be
# caught by the try/except block that wraps the mssqlcliclient execute
# statement.
if self.quit_command(document.text):
raise EOFError
try:
document = self.handle_editor_command(self.cli, document)
except RuntimeError as e:
self.logger.error("sql: %r, error: %r", document.text, e)
self.logger.error("traceback: %r", traceback.format_exc())
click.secho(str(e), err=True, fg='red')
continue
# Initialize default metaquery in case execution fails
query = MetaQuery(query=document.text, successful=False)
query = self.execute_command(document.text, query)
self.now = dt.datetime.today()
if not query.contains_secure_statement:
# Allow MssqlCompleter to learn user's preferred keywords, etc.
with self._completer_lock:
self.completer.extend_query_history(document.text)
self.query_history.append(query)
except EOFError:
self.mssqlcliclient_main.shutdown()
if not self.less_chatty:
print('Goodbye!')
def _build_cli(self, history):
def set_vi_mode(value):
self.vi_mode = value
key_binding_manager = mssqlcli_bindings(
get_vi_mode_enabled=lambda: self.vi_mode,
set_vi_mode_enabled=set_vi_mode)
def prompt_tokens(_):
prompt = self.get_prompt(self.prompt_format)
return [(Token.Prompt, prompt)]
def get_continuation_tokens(cli, width):
continuation = self.multiline_continuation_char * (width - 1) + ' '
return [(Token.Continuation, continuation)]
get_toolbar_tokens = create_toolbar_tokens_func(
lambda: self.vi_mode, None,
None,
None)
layout = create_prompt_layout(
lexer=PygmentsLexer(PostgresLexer),
reserve_space_for_menu=self.min_num_menu_lines,
get_prompt_tokens=prompt_tokens,
get_continuation_tokens=get_continuation_tokens,
get_bottom_toolbar_tokens=get_toolbar_tokens,
display_completions_in_columns=self.wider_completion_menu,
multiline=True,
extra_input_processors=[
# Highlight matching brackets while editing.
ConditionalProcessor(
processor=HighlightMatchingBracketProcessor(
chars='[](){}'),
filter=HasFocus(DEFAULT_BUFFER) & ~IsDone()),
])
with self._completer_lock:
buf = MssqlBuffer(
auto_suggest=AutoSuggestFromHistory(),
always_multiline=self.multi_line,
multiline_mode=self.multiline_mode,
completer=self.completer,
history=history,
complete_while_typing=Always(),
accept_action=AcceptAction.RETURN_DOCUMENT)
editing_mode = EditingMode.VI if self.vi_mode else EditingMode.EMACS
application = Application(
style=style_factory(self.syntax_style, self.cli_style),
layout=layout,
buffer=buf,
key_bindings_registry=key_binding_manager.registry,
on_exit=AbortAction.RAISE_EXCEPTION,
on_abort=AbortAction.RETRY,
ignore_case=True,
editing_mode=editing_mode)
cli = CommandLineInterface(application=application,
eventloop=self.eventloop)
return cli
def _should_show_limit_prompt(self, status, rows):
"""returns True if limit prompt should be shown, False otherwise."""
if not rows:
return False
return self.row_limit > 0 and len(rows) > self.row_limit
def _evaluate_command(self, text):
"""Used to run a command entered by the user during CLI operation
(Puts the E in REPL)
returns (results, MetaQuery)
"""
all_success = True
meta_changed = False # CREATE, ALTER, DROP, etc
mutated = False # INSERT, DELETE, etc
db_changed = False
contains_secure_statement = False
path_changed = False
output = []
total = 0
# Run the query.
start = time()
# mssql-cli
if not self.mssqlcliclient_main.connect_to_database():
click.secho(u'No connection to server. Exiting.')
exit(1)
for rows, columns, status, sql, is_error in \
self.mssqlcliclient_main.execute_query(text):
total = time() - start
if self._should_show_limit_prompt(status, rows):
click.secho('The result set has more than %s rows.'
% self.row_limit, fg='red')
if not click.confirm('Do you want to continue?'):
click.secho("Aborted!", err=True, fg='red')
break
contains_secure_statement = security_words_found_in(sql)
if is_error:
output.append(status)
all_success = False
continue
if self.auto_expand:
max_width = self.cli.output.get_size().columns
else:
max_width = None
settings = OutputSettings(
table_format=self.table_format,
dcmlfmt=self.decimal_format,
floatfmt=self.float_format,
missingval=self.null_string,
expanded=self.expanded_output,
max_width=max_width,
case_function=(
self.completer.case if self.settings['case_column_headers']
else
lambda x: x
)
)
formatted = self.format_output(None, rows, columns, status, settings)
output.extend(formatted)
db_changed, new_db_name = self.has_change_db_cmd(sql)
if new_db_name:
self.logger.info('Database context changed.')
self.mssqlcliclient_main.database = new_db_name
if all_success:
meta_changed = meta_changed or self.has_meta_cmd(text)
return output, MetaQuery(
text, all_success, total, meta_changed, db_changed, path_changed, mutated, contains_secure_statement)
def _handle_server_closed_connection(self):
"""Used during CLI execution"""
reconnect = click.prompt(
'Connection reset. Reconnect (Y/n)',
show_default=False, type=bool, default=True)
if reconnect:
try:
self.reset()
click.secho('Reconnected!\nTry the command again.', fg='green')
except Exception as e:
click.secho(str(e), err=True, fg='red')
def reset(self):
"""
Reset mssqlcli client with a new sql tools service and connection.
"""
try:
self.sqltoolsclient.shutdown()
self.sqltoolsclient = SqlToolsClient()
self.mssqlcliclient_main = self.mssqlcliclient_main.clone(self.sqltoolsclient)
if not self.mssqlcliclient_main.connect_to_database():
click.secho('Unable reconnect to server {0}; database {1}.'.format(
self.mssqlcliclient_main.server_name,
self.mssqlcliclient_main.database),
err=True, fg='yellow')
self.logger.info(u'Unable to reset connection to server {0}; database {1}'.format(
self.mssqlcliclient_main.server_name,
self.mssqlcliclient_main.database))
exit(1)
except Exception as e:
self.logger.error(u'Error in reset : {0}'.format(e.message))
raise e
def refresh_completions(self, history=None, persist_priorities='all'):
# Clone mssqlcliclient to create a new connection with a new owner Uri.
mssqlclclient_completion_refresher = self.mssqlcliclient_main.clone()
callback = functools.partial(self._on_completions_refreshed,
persist_priorities=persist_priorities)
self.completion_refresher.refresh(mssqcliclient=mssqlclclient_completion_refresher,
callbacks=callback,
history=history,
settings=self.settings)
return [(None, None, None,
'Auto-completion refresh started in the background.')]
def _on_completions_refreshed(self, new_completer, persist_priorities):
self._swap_completer_objects(new_completer, persist_priorities)
if self.cli:
# After refreshing, redraw the CLI to clear the statusbar
# "Refreshing completions..." indicator
self.cli.request_redraw()
def _swap_completer_objects(self, new_completer, persist_priorities):
"""Swap the completer object in cli with the newly created completer.
persist_priorities is a string specifying how the old completer's
learned prioritizer should be transferred to the new completer.
'none' - The new prioritizer is left in a new/clean state
'all' - The new prioritizer is updated to exactly reflect
the old one
'keywords' - The new prioritizer is updated with old keyword
priorities, but not any other.
"""
with self._completer_lock:
old_completer = self.completer
self.completer = new_completer
if persist_priorities == 'all':
# Just swap over the entire prioritizer
new_completer.prioritizer = old_completer.prioritizer
elif persist_priorities == 'keywords':
# Swap over the entire prioritizer, but clear name priorities,
# leaving learned keyword priorities alone
new_completer.prioritizer = old_completer.prioritizer
new_completer.prioritizer.clear_names()
elif persist_priorities == 'none':
# Leave the new prioritizer as is
pass
# When mssql-cli is first launched we call refresh_completions before
# instantiating the cli object. So it is necessary to check if cli
# exists before trying the replace the completer object in cli.
if self.cli:
self.cli.current_buffer.completer = new_completer
def get_completions(self, text, cursor_positition):
with self._completer_lock:
return self.completer.get_completions(
Document(text=text, cursor_position=cursor_positition), None)
def get_prompt(self, string):
string = string.replace('\\t', self.now.strftime('%x %X'))
string = string.replace('\\u', self.mssqlcliclient_main.user_name or '(none)')
string = string.replace('\\h', self.mssqlcliclient_main.prompt_host or '(none)')
string = string.replace('\\d', self.mssqlcliclient_main.database or '(none)')
string = string.replace('\\p', str(self.mssqlcliclient_main.prompt_port) or '(none)')
string = string.replace('\\n', "\n")
return string
def get_last_query(self):
"""Get the last query executed or None."""
return self.query_history[-1][0] if self.query_history else None
def has_meta_cmd(self, query):
"""Determines if the completion needs a refresh by checking if the sql
statement is an alter, create, drop, commit or rollback."""
try:
first_token = query.split()[0]
if first_token.lower() in ('alter', 'create', 'drop'):
return True
except Exception:
return False
return False
def has_change_db_cmd(self, query):
"""Determines if the statement is a database switch such as 'use' or '\\c'
Returns (True, DBName) or (False, None)
"""
try:
first_token = query.split()[0]
if first_token.lower() in ('use', '\\c', '\\connect'):
return True, query.split()[1].strip('"')
except Exception:
return False, None
return False, None
def quit_command(self, sql):
return (sql.strip().lower() == 'exit' or
sql.strip().lower() == 'quit' or
sql.strip() == r'\q' or
sql.strip() == ':q')
def format_output(self, title, cur, headers, status, settings):
output = []
expanded = (settings.expanded or settings.table_format == 'vertical')
table_format = ('vertical' if settings.expanded else
settings.table_format)
max_width = settings.max_width
case_function = settings.case_function
formatter = TabularOutputFormatter(format_name=table_format)
def format_array(val):
if val is None:
return settings.missingval
if not isinstance(val, list):
return val
return '{' + ','.join(text_type(format_array(e)) for e in val) + '}'
def format_arrays(data, headers, **_):
data = list(data)
for row in data:
row[:] = [
format_array(val) if isinstance(val, list) else val
for val in row
]
return data, headers
output_kwargs = {
'sep_title': 'RECORD {n}',
'sep_character': '-',
'sep_length': (1, 25),
'missing_value': settings.missingval,
'integer_format': settings.dcmlfmt,
'float_format': settings.floatfmt,
'preprocessors': (format_numbers, format_arrays),
'disable_numparse': True,
'preserve_whitespace': True
}
if not settings.floatfmt:
output_kwargs['preprocessors'] = (align_decimals, )
if title:
output.append(title)
if cur:
headers = [case_function(utf8tounicode(x)) for x in headers]
if max_width is not None:
cur = list(cur)
formatted = formatter.format_output(cur, headers, **output_kwargs)
if isinstance(formatted, text_type):
formatted = iter(formatted.splitlines())
first_line = next(formatted)
formatted = itertools.chain([first_line], formatted)
if (not expanded and max_width and len(
first_line) > max_width and headers):
formatted = formatter.format_output(
cur, headers, format_name='vertical', column_types=None, **output_kwargs)
if isinstance(formatted, text_type):
formatted = iter(formatted.splitlines())
output = itertools.chain(output, formatted)
if status: # Only print the status if it's not None.
output = itertools.chain(output, [status])
return output
class MssqlCli(object):
# pylint: disable=too-many-instance-attributes, useless-object-inheritance
max_len_prompt = 30
default_prompt = '\\d> '
def set_default_pager(self, config):
configured_pager = config['main'].get('pager')
os_environ_pager = os.environ.get('PAGER')
is_less_installed = is_command_valid(['less', '--version'])
default_pager = configured_pager or os_environ_pager or \
('less -SRXF' if is_less_installed else False) or None
if configured_pager:
self.logger.info('Default pager found in config file: "%s"',
configured_pager)
elif os_environ_pager:
self.logger.info(
'Default pager found in PAGER environment variable: "%s"',
os_environ_pager)
elif is_less_installed:
self.logger.info('Default pager set to Less')
else:
self.logger.info(
'No default pager found in environment. Using os default pager'
)
# Set default set of less recommended options, if they are not already set.
# They are ignored if pager is different than less.
if not os.environ.get('LESS'):
os.environ['LESS'] = '-SRXF'
if default_pager is not None:
os.environ['PAGER'] = default_pager
return default_pager
def __init__(self, options):
# Load config.
c = self.config = get_config(options.mssqlclirc_file)
self.initialize_logging()
self.logger = logging.getLogger(u'mssqlcli.main')
self.interactive_mode = options.interactive_mode
self.table_format = c['main']['table_format']
self.decimal_format = c['data_formats']['decimal']
self.float_format = c['data_formats']['float']
self.null_string = c['main'].get('null_string', '<null>')
self.expanded_output = c['main']['expand'] == 'always'
self.integrated_auth = options.integrated_auth
self.less_chatty = bool(options.less_chatty) or c['main'].as_bool(
'less_chatty') or self.interactive_mode
keyword_casing = c['main']['keyword_casing']
self.settings = {
'casing_file': get_casing_file(c),
'generate_casing_file': c['main'].as_bool('generate_casing_file'),
'generate_aliases': c['main'].as_bool('generate_aliases'),
'asterisk_column_order': c['main']['asterisk_column_order'],
'qualify_columns': c['main']['qualify_columns'],
'case_column_headers': c['main'].as_bool('case_column_headers'),
'search_path_filter': c['main'].as_bool('search_path_filter'),
'single_connection': False,
'less_chatty': self.less_chatty,
'keyword_casing': keyword_casing,
}
if self.interactive_mode:
pager = self.set_default_pager(c)
self.prompt_session = None
# set auto_expand to false if less is detected with auto expand
self.auto_expand = options.auto_vertical_output \
or (c['main']['expand'] == 'auto' and pager != 'less -SRXF')
self.multiline = c['main'].as_bool('multi_line')
self.multiline_mode = c['main'].get('multi_line_mode', 'tsql')
self.vi_mode = c['main'].as_bool('vi')
self.prompt_format = options.prompt or c['main'].get(
'prompt', self.default_prompt)
self.row_limit = options.row_limit
self.min_num_menu_lines = c['main'].as_int('min_num_menu_lines')
self.multiline_continuation_char = c['main'][
'multiline_continuation_char']
self.syntax_style = c['main']['syntax_style']
self.cli_style = c['colors']
self.output_style = style_factory_output(self.syntax_style,
self.cli_style)
self.wider_completion_menu = c['main'].as_bool(
'wider_completion_menu')
self.on_error = c['main']['on_error'].upper()
self.now = dt.datetime.today()
self.completion_refresher = CompletionRefresher()
self.query_history = []
# Initialize completer
smart_completion = c['main'].get('smart_completion',
'True').lower() == 'true'
self.completer = MssqlCompleter(smart_completion=smart_completion,
settings=self.settings)
self._completer_lock = threading.Lock()
# input and output file are for non-interactive mode
self.input_file = options.input_file
self.output_file = options.output_file
self.query = options.query
self.sqltoolsclient = SqlToolsClient(
enable_logging=options.enable_sqltoolsservice_logging)
self.mssqlcliclient_main = MssqlCliClient(options, self.sqltoolsclient)
# exit and return error if user enters interactive mode with -i or -o arguments enabled
if self.interactive_mode and (self.input_file or self.output_file):
raise ValueError(
"Invalid arguments: -i and -o can only be used in non-interactive "
"mode.")
# exit and return error if both query text and an input file are specified
if self.query and self.input_file:
raise ValueError(
"Invalid arguments: either query [-Q] or input file [-i] may be "
"specified.")
def __del__(self):
# Shut-down sqltoolsservice
if self.sqltoolsclient:
self.sqltoolsclient.shutdown()
# TODO: possibly use at a later date for expanded output file functionality
# def write_to_file(self, pattern, **_):
# if not pattern:
# self.output_file = None
# message = 'File output disabled'
# return [(None, None, None, message, '', True)]
# filename = os.path.abspath(os.path.expanduser(pattern))
# if not os.path.isfile(filename):
# try:
# open(filename, 'w').close()
# except IOError as e:
# self.output_file = None
# message = str(e) + '\nFile output disabled'
# return [(None, None, None, message, '', False)]
# self.output_file = filename
# message = 'Writing to file "%s"' % self.output_file
# return [(None, None, None, message, '', True)]
def initialize_logging(self):
log_file = self.config['main']['log_file']
if log_file == 'default':
log_file = config_location() + 'mssqlcli.log'
ensure_dir_exists(log_file)
log_level = self.config['main']['log_level']
# Disable logging if value is NONE by switching to a no-op handler.
# Set log level to a high value so it doesn't even waste cycles getting
# called.
if log_level.upper() == 'NONE':
handler = logging.NullHandler()
else:
# creates a log buffer with max size of 20 MB and 5 backup files
handler = RotatingFileHandler(os.path.expanduser(log_file),
encoding='utf-8',
maxBytes=1024 * 1024 * 20,
backupCount=5)
level_map = {
'CRITICAL': logging.CRITICAL,
'ERROR': logging.ERROR,
'WARNING': logging.WARNING,
'INFO': logging.INFO,
'DEBUG': logging.DEBUG,
'NONE': logging.CRITICAL
}
log_level = level_map[log_level.upper()]
formatter = logging.Formatter(
'%(asctime)s (%(process)d/%(threadName)s) '
'%(name)s %(levelname)s - %(message)s')
handler.setFormatter(formatter)
root_logger = logging.getLogger('mssqlcli')
root_logger.addHandler(handler)
root_logger.setLevel(log_level)
root_logger.info('Initializing mssqlcli logging.')
root_logger.debug('Log file %r.', log_file)
def set_main_mssqlcli_client(self, mssqlcli_client):
self.mssqlcliclient_main = mssqlcli_client
def connect_to_database(self):
owner_uri, error_messages = self.mssqlcliclient_main.connect_to_database(
)
if not owner_uri and error_messages:
click.secho('\n'.join(error_messages), err=True, fg='yellow')
self.logger.debug('Database connection failed: %r.',
error_messages)
sys.exit(1)
def handle_editor_command(self, text):
r"""
Editor command is any query that is prefixed or suffixed
by a '\e'. The reason for a while loop is because a user
might edit a query multiple times.
For eg:
"select * from \e"<enter> to edit it in vim, then come
back to the prompt with the edited query "select * from
blah where q = 'abc'\e" to edit it again.
:param text: Document
:return: Document
"""
# FIXME: using application.pre_run_callables like this here is not the best solution.
# It's internal api of prompt_toolkit that may change. This was added to fix #668.
# We may find a better way to do it in the future.
# pylint: disable=no-member
editor_command = special.editor_command(text)
while editor_command:
filename = special.get_filename(text)
query = (special.get_editor_query(text) or self.get_last_query())
sql, message = special.open_external_editor(filename, sql=query)
if message:
# Something went wrong. Raise an exception and bail.
raise RuntimeError(message)
while True:
try:
text = self.prompt_session.prompt(default=sql)
break
except KeyboardInterrupt:
sql = ""
editor_command = special.editor_command(text)
return text
def _execute_interactive_command(self, text):
""" Runs commands in the interactive CLI mode. """
logger = self.logger
# Initialize default metaquery in case execution fails
query = MetaQuery(query=text, successful=False)
try:
output, query = self._evaluate_command(text)
except KeyboardInterrupt:
# Issue where Ctrl+C propagates to sql tools service process and kills it,
# so that query/cancel request can't be sent.
# Right now the sql_tools_service process is killed and we restart
# it with a new connection.
click.secho(u'Cancelling query...', err=True, fg='red')
self.reset()
logger.debug("cancelled query, sql: %r", text)
click.secho("Query cancelled.", err=True, fg='red')
except NotImplementedError:
click.secho('Not Yet Implemented.', fg="yellow")
else:
if query.total_time > 1:
# pylint: disable=no-member
print('Time: %0.03fs (%s)' %
(query.total_time,
humanize.time.naturaldelta(query.total_time)))
else:
print('Time: %0.03fs' % query.total_time)
# Check if we need to update completions, in order of most
# to least drastic changes
if query.db_changed:
with self._completer_lock:
self.completer.reset_completions()
self.refresh_completions(persist_priorities='keywords')
elif query.meta_changed:
self.refresh_completions(persist_priorities='all')
if not query.contains_secure_statement:
# Allow MssqlCompleter to learn user's preferred keywords, etc.
with self._completer_lock:
self.completer.extend_query_history(text)
self.query_history.append(query)
return output
def execute_query(self, text):
""" Processes a query string and outputs to file or terminal """
if self.interactive_mode:
output = self._execute_interactive_command(text)
else:
# non-interactive mode
output, _ = self._evaluate_command(text)
self._output_query(output)
return output
def _output_query(self, output):
""" Specifies how query output is handled """
if self.interactive_mode:
click.echo_via_pager('\n'.join(output))
else:
if self.output_file:
try:
with open(self.output_file, 'w', encoding='utf-8') as f:
click.echo('\n'.join(output), file=f)
except IOError as e:
click.secho(str(e), err=True, fg='red')
sys.exit(1)
else:
click.echo('\n'.join(output))
def run(self):
""" Spins up CLI. """
# raise error if interactive mode is set to false here
if not self.interactive_mode:
raise ValueError(
"Invalid arguments: 'run' must be used in interactive mode! Please set "
"interactive_mode to True.")
# exit and return error if user enters interactive mode with -o argument enabled
if self.output_file:
raise ValueError(
"Invalid arguments: -o must be used with interactive mode set to "
"false.")
history_file = self.config['main']['history_file']
if history_file == 'default':
history_file = config_location() + 'history'
history = MssqlFileHistory(os.path.expanduser(history_file))
self.refresh_completions(history=history, persist_priorities='none')
self.prompt_session = self._build_cli(history)
if not self.less_chatty:
print('Version: {}'.format(__version__))
print('Mail: [email protected]')
print('Home: http://github.com/dbcli/mssql-cli')
try:
while True:
try:
text = self.prompt_session.prompt()
except KeyboardInterrupt:
continue
# The reason we check here instead of inside the mssqlcliclient is
# because we want to raise the Exit exception which will be
# caught by the try/except block that wraps the mssqlcliclient execute
# statement.
if self.quit_command(text):
raise EOFError
try:
text = self.handle_editor_command(text)
except RuntimeError as e:
self.logger.error("sql: %r, error: %r", text, e)
self.logger.error("traceback: %r", traceback.format_exc())
click.secho(str(e), err=True, fg='red')
continue
self.execute_query(text)
self.now = dt.datetime.today()
except EOFError:
self.mssqlcliclient_main.shutdown()
if not self.less_chatty:
print(localized.goodbye())
def _build_cli(self, history):
"""
Builds prompt session.
NOTE: PROMPT-SESSION USES THIS AS DEPENDENCY.
"""
def get_message():
prompt = self.get_prompt(self.prompt_format)
return [(u'class:prompt', prompt)]
def get_continuation(width, line_number, is_soft_wrap):
"""
NOTE: updating parameters will cause prompt session to crash.
"""
# pylint: disable=unused-argument
continuation = self.multiline_continuation_char * (width - 1) + ' '
return [(u'class:continuation', continuation)]
get_toolbar_tokens = create_toolbar_tokens_func(self)
if self.wider_completion_menu:
complete_style = CompleteStyle.MULTI_COLUMN
else:
complete_style = CompleteStyle.COLUMN
with self._completer_lock:
self.prompt_session = PromptSession(
message=get_message,
style=style_factory(self.syntax_style, self.cli_style),
# Layout options.
lexer=PygmentsLexer(PostgresLexer),
prompt_continuation=get_continuation,
bottom_toolbar=get_toolbar_tokens,
complete_style=complete_style,
input_processors=[
ConditionalProcessor(
processor=HighlightMatchingBracketProcessor(
chars='[](){}'),
#pylint: disable=invalid-unary-operand-type
filter=HasFocus(DEFAULT_BUFFER) & ~IsDone()),
# Render \t as 4 spaces instead of "^I"
TabsProcessor(char1=u' ', char2=u' ')
],
reserve_space_for_menu=self.min_num_menu_lines,
# Buffer options.
multiline=mssql_is_multiline(self),
completer=ThreadedCompleter(
DynamicCompleter(lambda: self.completer)),
history=history,
auto_suggest=AutoSuggestFromHistory(),
complete_while_typing=True,
# Key bindings.
enable_system_prompt=True,
enable_open_in_editor=True,
# Other options.
key_bindings=mssqlcli_bindings(self),
editing_mode=EditingMode.VI
if self.vi_mode else EditingMode.EMACS,
search_ignore_case=True)
return self.prompt_session
def _should_show_limit_prompt(self, status, rows):
"""
Returns True if limit prompt should be shown, False otherwise.
NOTE: updating parameters will cause prompt session to crash.
"""
# pylint: disable=unused-argument
if not rows:
return False
return self.interactive_mode and self.row_limit > 0 and len(
rows) > self.row_limit
def _evaluate_command(self, text):
"""
Used to run a command entered by the user during CLI operation
(Puts the E in REPL)
returns (results, MetaQuery)
"""
# pylint: disable=too-many-locals
all_success = True
meta_changed = False # CREATE, ALTER, DROP, etc
mutated = False # INSERT, DELETE, etc
db_changed = False
contains_secure_statement = False
path_changed = False
output = []
total = 0
# Run the query.
start = time()
# mssql-cli
if not self.mssqlcliclient_main.connect_to_database():
click.secho(u'No connection to server. Exiting.')
sys.exit(1)
for rows, columns, status, sql, is_error in \
self.mssqlcliclient_main.execute_query(text):
total = time() - start
if self._should_show_limit_prompt(status, rows):
click.secho('The result set has more than %s rows.' %
self.row_limit,
fg='red')
if not click.confirm('Do you want to continue?'):
click.secho("Aborted!", err=True, fg='red')
break
contains_secure_statement = security_words_found_in(sql)
if is_error:
output.append(status)
all_success = False
continue
if self.interactive_mode and self.auto_expand and self.prompt_session:
max_width = self.prompt_session.output.get_size().columns
else:
max_width = None
settings = OutputSettings(
table_format=self.table_format,
dcmlfmt=self.decimal_format,
floatfmt=self.float_format,
missingval=self.null_string,
expanded=self.expanded_output,
max_width=max_width,
case_function=(self.completer.case if self.interactive_mode
and self.settings['case_column_headers'] else
lambda x: x))
formatted = self.format_output(None, rows, columns, status,
settings)
output.extend(formatted)
db_changed, new_db_name = self.has_change_db_cmd(sql)
if new_db_name:
self.logger.info('Database context changed.')
self.mssqlcliclient_main.connected_database = new_db_name
if all_success:
meta_changed = meta_changed or self.has_meta_cmd(text)
return output, MetaQuery(text, all_success, total, meta_changed,
db_changed, path_changed, mutated,
contains_secure_statement)
def _handle_server_closed_connection(self):
"""Used during CLI execution"""
reconnect = click.prompt('Connection reset. Reconnect (Y/n)',
show_default=False,
type=bool,
default=True)
if reconnect:
self.reset()
click.secho('Reconnected!\nTry the command again.', fg='green')
def shutdown(self):
""" API for shutting down client """
self.mssqlcliclient_main.shutdown()
def reset(self):
"""
Reset mssqlcli client with a new sql tools service and connection.
"""
self.sqltoolsclient.shutdown()
self.sqltoolsclient = SqlToolsClient()
self.mssqlcliclient_main = self.mssqlcliclient_main.clone(
self.sqltoolsclient)
database_response = self.mssqlcliclient_main.connect_to_database()
if not database_response:
click.secho('Unable reconnect to server %s; database %s.' %
(self.mssqlcliclient_main.server_name,
self.mssqlcliclient_main.connected_database),
err=True,
fg='yellow')
self.logger.info(
u'Unable to reset connection to server %s; database %s',
self.mssqlcliclient_main.server_name,
self.mssqlcliclient_main.connected_database)
sys.exit(1)
else:
owner_uri, error_messages = database_response
if not owner_uri and error_messages:
# can occur if database credentials change during reset
self.logger.error(u'Error in reset : %s', error_messages)
raise ConnectionResetError(error_messages)
def refresh_completions(self, history=None, persist_priorities='all'):
# Clone mssqlcliclient to create a new connection with a new owner Uri.
mssqlclclient_completion_refresher = self.mssqlcliclient_main.clone()
callback = functools.partial(self._on_completions_refreshed,
persist_priorities=persist_priorities)
self.completion_refresher.refresh(
mssqcliclient=mssqlclclient_completion_refresher,
callbacks=callback,
history=history,
settings=self.settings)
return [(None, None, None,
'Auto-completion refresh started in the background.')]
def _on_completions_refreshed(self, new_completer, persist_priorities):
self._swap_completer_objects(new_completer, persist_priorities)
if self.prompt_session:
# After refreshing, redraw the CLI to clear the statusbar
# "Refreshing completions..." indicator
self.prompt_session.app.invalidate()
def _swap_completer_objects(self, new_completer, persist_priorities):
"""Swap the completer object with the newly created completer.
persist_priorities is a string specifying how the old completer's
learned prioritizer should be transferred to the new completer.
'none' - The new prioritizer is left in a new/clean state
'all' - The new prioritizer is updated to exactly reflect
the old one
'keywords' - The new prioritizer is updated with old keyword
priorities, but not any other.
"""
with self._completer_lock:
old_completer = self.completer
self.completer = new_completer
if persist_priorities == 'all':
# Just swap over the entire prioritizer
new_completer.prioritizer = old_completer.prioritizer
elif persist_priorities == 'keywords':
# Swap over the entire prioritizer, but clear name priorities,
# leaving learned keyword priorities alone
new_completer.prioritizer = old_completer.prioritizer
new_completer.prioritizer.clear_names()
elif persist_priorities == 'none':
# Leave the new prioritizer as is
pass
# When mssql-cli is first launched we call refresh_completions before
# instantiating the cli object. So it is necessary to check if cli
# exists before trying the replace the completer object in cli.
self.completer = new_completer
def get_completions(self, text, cursor_position):
with self._completer_lock:
return self.completer.get_completions(
Document(text=text, cursor_position=cursor_position), None)
def get_prompt(self, string):
string = string.replace('\\t', self.now.strftime('%x %X'))
string = string.replace('\\u', self.mssqlcliclient_main.user_name
or '(none)')
string = string.replace(
'\\h', self.mssqlcliclient_main.prompt_host or '(none)')
string = string.replace(
'\\d', self.mssqlcliclient_main.connected_database or '(none)')
string = string.replace(
'\\p',
str(self.mssqlcliclient_main.prompt_port) or '(none)')
string = string.replace('\\n', "\n")
return string
def get_last_query(self):
"""Get the last query executed or None."""
return self.query_history[-1][0] if self.query_history else None
@staticmethod
def has_meta_cmd(query):
"""Determines if the completion needs a refresh by checking if the sql
statement is an alter, create, drop, commit or rollback."""
if query and isinstance(query, str):
first_token = query.split()[0]
if first_token.lower() in ('alter', 'create', 'drop'):
return True
return False
@staticmethod
def has_change_db_cmd(query):
"""Determines if the statement is a database switch such as 'use' or '\\c'
Returns (True, DBName) or (False, None)
"""
if query and isinstance(query, str):
first_token = query.split()[0]
if first_token.lower() in ('use', '\\c', '\\connect'):
return True, query.split()[1].strip('"')
return False, None
@staticmethod
def quit_command(sql):
return (sql.strip().lower() == 'exit' or sql.strip().lower() == 'quit'
or sql.strip() == r'\q' or sql.strip() == ':q')
@staticmethod
def format_output(title, cur, headers, status, settings):
# pylint: disable=too-many-locals
output = []
expanded = (settings.expanded or settings.table_format == 'vertical')
table_format = ('vertical'
if settings.expanded else settings.table_format)
max_width = settings.max_width
case_function = settings.case_function
formatter = TabularOutputFormatter(format_name=table_format)
def format_array(val):
if val is None:
return settings.missingval
if not isinstance(val, list):
return val
return '{' + ','.join(text_type(format_array(e))
for e in val) + '}'
def format_arrays(data, headers, **_):
data = list(data)
for row in data:
row[:] = [
format_array(val) if isinstance(val, list) else val
for val in row
]
return data, headers
output_kwargs = {
'sep_title': 'RECORD {n}',
'sep_character': '-',
'sep_length': (1, 25),
'missing_value': settings.missingval,
'integer_format': settings.dcmlfmt,
'float_format': settings.floatfmt,
'preprocessors': (format_numbers, format_arrays),
'disable_numparse': True,
'preserve_whitespace': True
}
if not settings.floatfmt:
output_kwargs['preprocessors'] = (align_decimals, )
if title:
output.append(title)
if cur:
headers = [case_function(x) for x in headers]
if max_width is not None:
cur = list(cur)
formatted = formatter.format_output(cur, headers, **output_kwargs)
if isinstance(formatted, text_type):
formatted = iter(formatted.splitlines())
first_line = next(formatted)
formatted = itertools.chain([first_line], formatted)
if (not expanded and max_width and len(first_line) > max_width
and headers):
formatted = formatter.format_output(cur,
headers,
format_name='vertical',
column_types=None,
**output_kwargs)
if isinstance(formatted, text_type):
formatted = iter(formatted.splitlines())
output = itertools.chain(output, formatted)
if status: # Only print the status if it's not None.
output = itertools.chain(output, [status])
return output