def progress_update(self, line):
if not self.config.getboolean('main', 'timing'):
return
# Parse X-ClickHouse-Progress header
now = datetime.now()
progress = json.loads(line[23:].decode().strip())
progress = {
'timestamp': now,
'read_rows': int(progress['read_rows']),
'total_rows': int(progress['total_rows']),
'read_bytes': int(progress['read_bytes']),
}
# Calculate percentage completed and format initial message
progress['percents'] = int(
(progress['read_rows'] / progress['total_rows']) *
100) if progress['total_rows'] > 0 else 0
message = 'Progress: {} rows, {}'.format(
numberunit_fmt(progress['read_rows']),
sizeof_fmt(progress['read_bytes']))
# Calculate row and byte read velocity
if self.progress:
delta = (now - self.progress['timestamp']).total_seconds()
if delta > 0:
rps = (progress['read_rows'] -
self.progress['read_rows']) / delta
bps = (progress['read_bytes'] -
self.progress['read_bytes']) / delta
message += ' ({} rows/s, {}/s)'.format(numberunit_fmt(rps),
sizeof_fmt(bps))
self.progress = progress
self.progress_print(message, progress['percents'])
def handle_query(self,
query,
data=None,
stream=False,
verbose=False,
query_id=None,
compress=False,
**kwargs):
if query.rstrip(';') == '':
return
elif query.lower() in EXIT_COMMANDS:
raise EOFError
elif query.lower() in (r'\?', 'help'):
rows = [
['', ''],
["clickhouse-cli's custom commands:", ''],
['---------------------------------', ''],
['USE', "Change the current database."],
['SET', "Set an option for the current CLI session."],
['QUIT', "Exit clickhouse-cli."],
['HELP', "Show this help message."],
['', ''],
["PostgreSQL-like custom commands:", ''],
['--------------------------------', ''],
[r'\l', "Show databases."],
[r'\c', "Change the current database."],
[r'\d, \dt', "Show tables in the current database."],
[r'\d+', "Show table's schema."],
[r'\ps', "Show current queries."],
[r'\kill', "Kill query by its ID."],
['', ''],
["Query suffixes:", ''],
['---------------', ''],
[r'\g, \G', "Use the Vertical format."],
[r'\p', "Enable the pager."],
]
for row in rows:
self.echo.success('{:<8s}'.format(row[0]), nl=False)
self.echo.info(row[1])
return
elif query in (r'\d', r'\dt'):
query = 'SHOW TABLES'
elif query.startswith(r'\d+ '):
query = 'DESCRIBE TABLE ' + query[4:]
elif query == r'\l':
query = 'SHOW DATABASES'
elif query.startswith(r'\c '):
query = 'USE ' + query[3:]
elif query.startswith(r'\ps'):
query = (
"SELECT query_id, user, address, elapsed, {}, memory_usage "
"FROM system.processes WHERE query_id != '{}'").format(
'read_rows' if self.server_version[2] >= 54115 else
'rows_read', query_id)
elif query.startswith(r'\kill '):
self.client.kill_query(query[6:])
return
response = ''
self.progress_reset()
try:
response = self.client.query(
query,
fmt=self.format,
data=data,
stream=stream,
verbose=verbose,
query_id=query_id,
compress=compress,
)
except TimeoutError:
self.echo.error("Error: Connection timeout.")
return
except ConnectionError:
self.echo.error("Error: Failed to connect.")
return
except DBException as e:
self.progress_reset()
self.echo.error("\nQuery:")
self.echo.error(query)
self.echo.error("\n\nReceived exception from server:")
self.echo.error(e.error)
if self.stacktrace and e.stacktrace:
self.echo.print("\nStack trace:")
self.echo.print(e.stacktrace)
self.echo.print('\nElapsed: {elapsed:.3f} sec.\n'.format(
elapsed=e.response.elapsed.total_seconds()))
return
total_rows, total_bytes = self.progress_reset()
self.echo.print()
if stream:
data = response.iter_lines() if hasattr(
response, 'iter_lines') else response.data
for line in data:
print(line.decode('utf-8', 'ignore'))
else:
if response.data != '':
print_func = print
if self.config.getboolean('main', 'pager') or kwargs.pop(
'force_pager', False):
print_func = self.echo.pager
should_highlight_output = (verbose and self.highlight
and self.highlight_output and
response.format in PRETTY_FORMATS)
formatter = TerminalFormatter()
if self.highlight and self.highlight_truecolor:
formatter = TerminalTrueColorFormatter(
style=CHPygmentsStyle)
if should_highlight_output:
print_func(
pygments.highlight(response.data,
CHPrettyFormatLexer(), formatter))
else:
print_func(response.data)
if response.message != '':
self.echo.print(response.message)
self.echo.print()
self.echo.success('Ok. ', nl=False)
if response.rows is not None:
self.echo.print('{rows_count} row{rows_plural} in set.'.format(
rows_count=response.rows,
rows_plural='s' if response.rows != 1 else '',
),
end=' ')
if self.config.getboolean(
'main', 'timing') and response.time_elapsed is not None:
self.echo.print(
'Elapsed: {elapsed:.3f} sec. Processed: {rows} rows, {bytes} ({avg_rps} rows/s, {avg_bps}/s)'
.format(
elapsed=response.time_elapsed,
rows=numberunit_fmt(total_rows),
bytes=sizeof_fmt(total_bytes),
avg_rps=numberunit_fmt(total_rows /
max(response.time_elapsed, 0.001)),
avg_bps=sizeof_fmt(total_bytes /
max(response.time_elapsed, 0.001)),
),
end='')
self.echo.print('\n')