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|
#! /usr/bin/env python
"""Commands that require only database connection:
connect dbname=.. host=.. service=.. queue=..;
connect [ queue=.. ] [ node=.. ];
install pgq | londiste;
show queue [ <qname | *> ];
create queue <qname>;
alter queue <qname | *> set param = , ...;
drop queue <qname>;
show consumer [ <cname | *> [on <qname>] ];
register consumer <consumer> [on <qname> | at <tick_id> | copy <consumer> ]* ;
unregister consumer <consumer | *> [from <qname>];
register subconsumer <subconsumer> for <consumer> [on <qname>];
unregister subconsumer <subconsumer | *> for <consumer> [from <qname>] [close [batch]];
show node [ <node | *> [on <qname>] ];
show table <tbl>;
show sequence <seq>;
Following commands expect default queue:
show batch <batch_id>;
show batch <consumer>;
Londiste commands:
londiste add table <tbl> [ , ... ]
with skip_truncate, tgflags='UIDBAQL',
expect_sync, no_triggers,
-- pass trigger args:
backup, skip, when='EXPR', ev_XX='EXPR';
londiste add sequence <seq>;
londiste remove table <tbl> [ , ... ];
londiste remove sequence <seq> [ , ... ];
londiste tables;
londiste seqs;
londiste missing;
Other commands:
exit; - quit program
^D - quit program
^C - clear current buffer
"""
# unimplemented:
"""
create <root | branch | leaf> node <node> location <loc> [on <qname>];
drop node <node> [on <qname>];
alter node <node> [location=<loc>]
show_queue_stats <q>;
change provider
drop node
status
rename node
node create
create root_node <name>;
create branch_node <name>;
create leaf_node <name>;
alter node <name> provider <new>;
alter node <name> takeover <oldnow> with all;
alter node <name> rename <new>;
takeover <oldnode>;
drop node <name>;
show node [ <node | *> [on <qname>] ];
show cascade;
"""
cmdline_usage = '''\
Usage: qadmin [switches]
Initial connection options:
-h host
-p port
-U user
-d dbname
-Q queuename
Command options:
-c cmd_string
-f execfile
General options:
--help
--version
'''
import sys, os, readline, getopt, re, psycopg2, traceback
import pkgloader
pkgloader.require('skytools', '3.0')
import skytools
__version__ = skytools.__version__
script = None
IGNORE_HOSTS = {
'ip6-allhosts': 1,
'ip6-allnodes': 1,
'ip6-allrouters': 1,
#'ip6-localhost': 1,
'ip6-localnet': 1,
'ip6-loopback': 1,
'ip6-mcastprefix': 1,
}
_ident_rx =''' ( " ( "" | [^"]+ )* " ) | ( [a-z_][a-z0-9_]* ) | [.] | (?P<err> .) '''
_ident_rc = re.compile(_ident_rx, re.X | re.I)
def unquote_any(typ, s):
global _ident_rc
if typ == 'ident':
res = []
pos = 0
while 1:
m = _ident_rc.match(s, pos)
if not m:
break
if m.group('err'):
raise Exception('invalid syntax for ident')
s1 = m.group()
if s1[0] == '"':
s1 = s1[1:-1].replace('""', '"')
res.append(s1)
pos = m.end()
s = ''.join(res)
elif typ == 'str' or typ == 'dolq':
s = skytools.unquote_literal(s, True)
return s
def normalize_any(typ, s):
if typ == 'ident' and s.find('"') < 0:
s = s.lower()
return s
def display_result(curs, desc, fields = []):
"""Display multirow query as a table."""
rows = curs.fetchall()
if not fields:
fields = [f[0] for f in curs.description]
widths = [10] * len(fields)
for i, f in enumerate(fields):
rlen = len(f)
if rlen > widths[i]:
widths[i] = rlen
for row in rows:
for i, k in enumerate(fields):
rlen = row[k] and len(str(row[k])) or 0
if rlen > widths[i]:
widths[i] = rlen
widths = [w + 2 for w in widths]
fmt = '%%-%ds' * (len(widths) - 1) + '%%s'
fmt = fmt % tuple(widths[:-1])
if desc:
print(desc)
print(fmt % tuple(fields))
print(fmt % tuple([ '-' * (w - 2) for w in widths ]))
for row in rows:
print(fmt % tuple([row[k] for k in fields]))
print('')
##
## Base token classes
##
class Token:
"""Base class for tokens.
The optional 'param' kwarg will set corresponding key in
'params' dict to final token value.
"""
# string to append to completions
c_append = ' '
# token type to accept
tk_type = ("ident", "dolq", "str", "num", "sym")
# skipped: numarg, pyold, pynew
def __init__(self, next = None, name = None, append = 0):
self.next = next
self.name = name
self._append = append
# top-level api
def get_next(self, typ, word, params):
"""Return next token if 'word' matches this token."""
if not self.is_acceptable(typ, word):
return None
self.set_param(typ, word, params)
return self.next
def get_completions(self, params):
"""Return list of all completions possible at this point."""
wlist = self.get_wlist()
comp_list = [w + self.c_append for w in wlist]
return comp_list
# internal api
def get_wlist(self):
"""Return list of potential words at this point."""
return []
def set_param(self, typ, word, params):
# now set special param
if not self.name:
return
uw = unquote_any(typ, word)
if self._append:
lst = params.setdefault(self.name, [])
lst.append(uw)
else:
params[self.name] = uw
def is_acceptable(self, tok, word):
if tok not in self.tk_type:
return False
return True
class Exact(Token):
"""Single fixed token."""
def __init__(self, value, next, **kwargs):
Token.__init__(self, next, **kwargs)
self.value = value
def get_wlist(self):
return [self.value]
def is_acceptable(self, typ, word):
if not Token.is_acceptable(self, typ, word):
return False
return word == self.value
class List(Token):
"""List of Tokens, will be tried sequentially until one matches."""
def __init__(self, *args, **kwargs):
Token.__init__(self, **kwargs)
self.tok_list = list(args)
def add(self, *args):
for a in args:
self.tok_list.append(a)
def get_next(self, typ, word, params):
for w in self.tok_list:
n = w.get_next(typ, word, params)
if n:
self.set_param(typ, word, params)
return n
return None
def get_completions(self, params):
comp_list = []
for w in self.tok_list:
comp_list += w.get_completions(params)
return comp_list
##
## Dynamic token classes
##
class ConnstrPassword(Token):
tk_type = ("str", "num", "ident")
class StrValue(Token):
tk_type = ("str",)
class NumValue(Token):
tk_type = ("num",)
class Word(Exact):
"""Single fixed keyword."""
tk_type = ("ident",)
class Name(Token):
"""Dynamically generated list of idents."""
tk_type = ("ident")
class Symbol(Exact):
"""Single fixed symbol."""
tk_type = ("sym",)
c_append = ''
class XSymbol(Symbol):
"""Symbol that is not shown in completion."""
def get_wlist(self):
return []
class SubConsumerName(Token):
tk_type = ("str", "num", "ident")
# data-dependant completions
class Queue(Name):
def get_wlist(self):
return script.get_queue_list()
class Consumer(Name):
def get_wlist(self):
return script.get_consumer_list()
class DBNode(Name):
def get_wlist(self):
return script.get_node_list()
class Database(Name):
def get_wlist(self):
return script.get_database_list()
class Host(Name):
def get_wlist(self):
return script.get_host_list()
class User(Name):
def get_wlist(self):
return script.get_user_list()
class NewTable(Name):
def get_wlist(self):
return script.get_new_table_list()
class KnownTable(Name):
def get_wlist(self):
return script.get_known_table_list()
class PlainTable(Name):
def get_wlist(self):
return script.get_plain_table_list()
class PlainSequence(Name):
def get_wlist(self):
return script.get_plain_seq_list()
class NewSeq(Name):
def get_wlist(self):
return script.get_new_seq_list()
class KnownSeq(Name):
def get_wlist(self):
return script.get_known_seq_list()
class BatchId(NumValue):
def get_wlist(self):
return script.get_batch_list()
class TickId(NumValue):
def get_wlist(self):
return []
class Port(NumValue):
def get_wlist(self):
return ['5432', '6432']
# easier completion - add follow-up symbols
class WordEQ(Word):
"""Word that is followed by '='."""
c_append = '='
def __init__(self, word, next, **kwargs):
next = Symbol('=', next)
Word.__init__(self, word, next, **kwargs)
class WordEQQ(Word):
"""Word that is followed by '=' and string."""
c_append = "='"
def __init__(self, word, next, **kwargs):
next = Symbol('=', next)
Word.__init__(self, word, next, **kwargs)
##
## Now describe the syntax.
##
top_level = List(name = 'cmd')
w_done = Symbol(';', top_level)
w_xdone = XSymbol(';', top_level)
w_sql = List(w_done)
w_sql.add(Token(w_sql))
w_connect = List()
w_connect.add(
WordEQ('dbname', Database(w_connect, name = 'dbname')),
WordEQ('host', Host(w_connect, name = 'host')),
WordEQ('port', Port(w_connect, name = 'port')),
WordEQ('user', User(w_connect, name = 'user')),
WordEQ('password', ConnstrPassword(w_connect, name = 'password')),
WordEQ('queue', Queue(w_connect, name = 'queue')),
WordEQ('node', DBNode(w_connect, name = 'node')),
w_done)
w_show_batch = List(
BatchId(w_done, name = 'batch_id'),
Consumer(w_done, name = 'consumer'))
w_show_queue = List(
Symbol('*', w_done, name = 'queue'),
Queue(w_done, name = 'queue'),
w_done)
w_show_on_queue = List(
Symbol('*', w_done, name = 'queue'),
Queue(w_done, name = 'queue'),
)
w_on_queue = List(Word('on', w_show_on_queue), w_done)
w_show_consumer = List(
Symbol('*', w_on_queue, name = 'consumer'),
Consumer(w_on_queue, name = 'consumer'),
w_done)
w_show_node = List(
Symbol('*', w_on_queue, name = 'node'),
DBNode(w_on_queue, name = 'node'),
w_done)
w_show_table = PlainTable(w_done, name = 'table')
w_show_seq = PlainSequence(w_done, name = 'seq')
w_show = List(
Word('batch', w_show_batch),
Word('help', w_done),
Word('queue', w_show_queue),
Word('consumer', w_show_consumer),
Word('node', w_show_node),
Word('table', w_show_table),
Word('sequence', w_show_seq),
Word('version', w_done),
name = "cmd2")
w_install = List(
Word('pgq', w_done),
Word('londiste', w_done),
name = 'module')
# alter queue
w_qargs2 = List()
w_qargs = List(
WordEQQ('idle_period', StrValue(w_qargs2, name = 'ticker_idle_period')),
WordEQ('max_count', NumValue(w_qargs2, name = 'ticker_max_count')),
WordEQQ('max_lag', StrValue(w_qargs2, name = 'ticker_max_lag')),
WordEQ('paused', NumValue(w_qargs2, name = 'ticker_paused')))
w_qargs2.add(w_done)
w_qargs2.add(Symbol(',', w_qargs))
w_set_q = Word('set', w_qargs)
w_alter_q = List(
Symbol('*', w_set_q, name = 'queue'),
Queue(w_set_q, name = 'queue'))
# alter
w_alter = List(
Word('queue', w_alter_q),
w_sql,
name = 'cmd2')
# create
w_create = List(
Word('queue', Queue(w_done, name = 'queue')),
w_sql,
name = 'cmd2')
# drop
w_drop = List(
Word('queue', Queue(w_done, name = 'queue')),
w_sql,
name = 'cmd2')
# register
w_reg_target = List()
w_reg_target.add(
Word('on', Queue(w_reg_target, name = 'queue')),
Word('copy', Consumer(w_reg_target, name = 'copy_reg')),
Word('at', TickId(w_reg_target, name = 'at_tick')),
w_done)
w_cons_on_queue = Word('consumer',
Consumer(w_reg_target, name = 'consumer'),
name = 'cmd2')
w_sub_reg_target = List()
w_sub_reg_target.add(
Word('on', Queue(w_sub_reg_target, name = 'queue')),
Word('for', Consumer(w_sub_reg_target, name = 'consumer')),
w_done)
w_subcons_on_queue = Word('subconsumer',
SubConsumerName(w_sub_reg_target, name = 'subconsumer'),
name = 'cmd2')
w_register = List(w_cons_on_queue,
w_subcons_on_queue)
# unregister
w_from_queue = List(w_done, Word('from', Queue(w_done, name = 'queue')))
w_cons_from_queue = Word('consumer',
List( Symbol('*', w_from_queue, name = 'consumer'),
Consumer(w_from_queue, name = 'consumer')
),
name = 'cmd2')
w_done_close = List(w_done,
Word('close', List(w_done, Word('batch', w_done)), name = 'close'))
w_from_queue_close = List(w_done_close,
Word('from', Queue(w_done_close, name = 'queue')))
w_con_from_queue = Consumer(w_from_queue_close, name = 'consumer')
w_subcons_from_queue = Word('subconsumer',
List( Symbol('*', Word('for', w_con_from_queue), name = 'subconsumer'),
SubConsumerName(Word('for', w_con_from_queue), name = 'subconsumer')
),
name = 'cmd2')
w_unregister = List(w_cons_from_queue,
w_subcons_from_queue)
# londiste add table
w_table_with2 = List()
w_table_with = List(
Word('skip_truncate', w_table_with2, name = 'skip_truncate'),
Word('expect_sync', w_table_with2, name = 'expect_sync'),
Word('backup', w_table_with2, name = 'backup'),
Word('skip', w_table_with2, name = 'skip'),
Word('no_triggers', w_table_with2, name = 'no_triggers'),
WordEQQ('ev_ignore', StrValue(w_table_with2, name = 'ignore')),
WordEQQ('ev_type', StrValue(w_table_with2, name = 'ev_type')),
WordEQQ('ev_data', StrValue(w_table_with2, name = 'ev_data')),
WordEQQ('ev_extra1', StrValue(w_table_with2, name = 'ev_extra1')),
WordEQQ('ev_extra2', StrValue(w_table_with2, name = 'ev_extra2')),
WordEQQ('ev_extra3', StrValue(w_table_with2, name = 'ev_extra3')),
WordEQQ('ev_extra4', StrValue(w_table_with2, name = 'ev_extra4')),
WordEQQ('pkey', StrValue(w_table_with2, name = 'pkey')),
WordEQQ('when', StrValue(w_table_with2, name = 'when')),
WordEQQ('tgflags', StrValue(w_table_with2, name = 'tgflags'))
)
w_table_with2.add(w_done)
w_table_with2.add(Symbol(',', w_table_with))
w_londiste_add_table = List()
w_londiste_add_table2 = List(
Symbol(',', w_londiste_add_table),
Word('with', w_table_with),
w_done)
w_londiste_add_table.add(
NewTable(w_londiste_add_table2,
name = 'tables', append = 1))
# londiste add seq
w_londiste_add_seq = List()
w_londiste_add_seq2 = List(
Symbol(',', w_londiste_add_seq),
w_done)
w_londiste_add_seq.add(
NewSeq(w_londiste_add_seq2, name = 'seqs', append = 1))
# londiste remove table
w_londiste_remove_table = List()
w_londiste_remove_table2 = List(
Symbol(',', w_londiste_remove_table),
w_done)
w_londiste_remove_table.add(
KnownTable(w_londiste_remove_table2, name = 'tables', append = 1))
# londiste remove sequence
w_londiste_remove_seq = List()
w_londiste_remove_seq2 = List(
Symbol(',', w_londiste_remove_seq),
w_done)
w_londiste_remove_seq.add(
KnownSeq(w_londiste_remove_seq2, name = 'seqs', append = 1))
w_londiste_add = List(
Word('table', w_londiste_add_table),
Word('sequence', w_londiste_add_seq),
name = 'cmd3')
w_londiste_remove = List(
Word('table', w_londiste_remove_table),
Word('sequence', w_londiste_remove_seq),
name = 'cmd3')
# londiste
w_londiste = List(
Word('add', w_londiste_add),
Word('remove', w_londiste_remove),
Word('missing', w_done),
Word('tables', w_done),
Word('seqs', w_done),
name = "cmd2")
top_level.add(
Word('alter', w_alter),
Word('connect', w_connect),
Word('create', w_create),
Word('drop', w_drop),
Word('install', w_install),
Word('register', w_register),
Word('unregister', w_unregister),
Word('show', w_show),
Word('exit', w_done),
Word('londiste', w_londiste),
Word('select', w_sql),
w_sql)
##
## Main class for keeping the state.
##
class AdminConsole:
cur_queue = None
cur_database = None
server_version = None
pgq_version = None
cmd_file = None
cmd_str = None
comp_cache = {
'comp_pfx': None,
'comp_list': None,
'queue_list': None,
'database_list': None,
'consumer_list': None,
'host_list': None,
'user_list': None,
}
db = None
initial_connstr = None
rc_hosts = re.compile('\s+')
def get_queue_list(self):
q = "select queue_name from pgq.queue order by 1"
return self._ccache('queue_list', q, 'pgq')
def get_database_list(self):
q = "select datname from pg_catalog.pg_database order by 1"
return self._ccache('database_list', q)
def get_user_list(self):
q = "select usename from pg_catalog.pg_user order by 1"
return self._ccache('user_list', q)
def get_consumer_list(self):
q = "select co_name from pgq.consumer order by 1"
return self._ccache('consumer_list', q, 'pgq')
def get_node_list(self):
q = "select distinct node_name from pgq_node.node_location order by 1"
return self._ccache('node_list', q, 'pgq_node')
def _new_obj_sql(self, queue, objname, objkind):
args = {'queue': skytools.quote_literal(queue),
'obj': objname,
'ifield': objname + '_name',
'itable': 'londiste.' + objname + '_info',
'kind': skytools.quote_literal(objkind),
}
q = """select quote_ident(n.nspname) || '.' || quote_ident(r.relname)
from pg_catalog.pg_class r
join pg_catalog.pg_namespace n on (n.oid = r.relnamespace)
left join %(itable)s i
on (i.queue_name = %(queue)s and
i.%(ifield)s = (n.nspname || '.' || r.relname))
where r.relkind = %(kind)s
and n.nspname not in ('pg_catalog', 'information_schema', 'pgq', 'londiste', 'pgq_node', 'pgq_ext')
and n.nspname !~ 'pg_.*'
and i.%(ifield)s is null
union all
select londiste.quote_fqname(%(ifield)s) from %(itable)s
where queue_name = %(queue)s and not local
order by 1 """ % args
return q
def get_new_table_list(self):
if not self.cur_queue:
return []
q = self._new_obj_sql(self.cur_queue, 'table', 'r')
return self._ccache('new_table_list', q, 'londiste')
def get_new_seq_list(self):
if not self.cur_queue:
return []
q = self._new_obj_sql(self.cur_queue, 'seq', 'S')
return self._ccache('new_seq_list', q, 'londiste')
def get_known_table_list(self):
if not self.cur_queue:
return []
qname = skytools.quote_literal(self.cur_queue)
q = "select londiste.quote_fqname(table_name)"\
" from londiste.table_info"\
" where queue_name = %s order by 1" % qname
return self._ccache('known_table_list', q, 'londiste')
def get_known_seq_list(self):
if not self.cur_queue:
return []
qname = skytools.quote_literal(self.cur_queue)
q = "select londiste.quote_fqname(seq_name)"\
" from londiste.seq_info"\
" where queue_name = %s order by 1" % qname
return self._ccache('known_seq_list', q, 'londiste')
def get_plain_table_list(self):
q = "select quote_ident(n.nspname) || '.' || quote_ident(r.relname)"\
" from pg_class r join pg_namespace n on (n.oid = r.relnamespace)"\
" where r.relkind = 'r' "\
" and n.nspname not in ('pg_catalog', 'information_schema', 'pgq', 'londiste', 'pgq_node', 'pgq_ext') "\
" and n.nspname !~ 'pg_.*' "\
" order by 1"
return self._ccache('plain_table_list', q)
def get_plain_seq_list(self):
q = "select quote_ident(n.nspname) || '.' || quote_ident(r.relname)"\
" from pg_class r join pg_namespace n on (n.oid = r.relnamespace)"\
" where r.relkind = 'S' "\
" and n.nspname not in ('pg_catalog', 'information_schema', 'pgq', 'londiste', 'pgq_node', 'pgq_ext') "\
" order by 1"
return self._ccache('plain_seq_list', q)
def get_batch_list(self):
if not self.cur_queue:
return []
qname = skytools.quote_literal(self.cur_queue)
q = "select current_batch::text from pgq.get_consumer_info(%s)"\
" where current_batch is not null order by 1" % qname
return self._ccache('batch_list', q, 'pgq')
def _ccache(self, cname, q, req_schema = None):
if not self.db:
return []
# check if schema exists
if req_schema:
k = "schema_exists_%s" % req_schema
ok = self.comp_cache.get(k)
if ok is None:
curs = self.db.cursor()
ok = skytools.exists_schema(curs, req_schema)
self.comp_cache[k] = ok
if not ok:
return []
# actual completion
clist = self.comp_cache.get(cname)
if clist is None:
curs = self.db.cursor()
curs.execute(q)
clist = [r[0] for r in curs.fetchall()]
self.comp_cache[cname] = clist
return clist
def get_host_list(self):
clist = self.comp_cache.get('host_list')
if clist is None:
try:
f = open('/etc/hosts', 'r')
clist = []
while 1:
ln = f.readline()
if not ln:
break
ln = ln.strip()
if ln == '' or ln[0] == '#':
continue
lst = self.rc_hosts.split(ln)
for h in lst[1:]:
if h not in IGNORE_HOSTS:
clist.append(h)
clist.sort()
self.comp_cache['host_list'] = clist
except IOError:
clist = []
return clist
def parse_cmdline(self, argv):
switches = "c:h:p:d:U:f:Q:"
lswitches = ['help', 'version']
try:
opts, args = getopt.getopt(argv, switches, lswitches)
except getopt.GetoptError, ex:
print str(ex)
print "Use --help to see command line options"
sys.exit(1)
cstr_map = {
'dbname': None,
'host': None,
'port': None,
'user': None,
'password': None,
}
cmd_file = cmd_str = None
for o, a in opts:
if o == "--help":
print cmdline_usage
sys.exit(0)
elif o == "--version":
print "qadmin version %s" % __version__
sys.exit(0)
elif o == "-h":
cstr_map['host'] = a
elif o == "-p":
cstr_map['port'] = a
elif o == "-d":
cstr_map['dbname'] = a
elif o == "-U":
cstr_map['user'] = a
elif o == "-Q":
self.cur_queue = a
elif o == "-c":
self.cmd_str = a
elif o == "-f":
self.cmd_file = a
cstr_list = []
for k, v in cstr_map.items():
if v is not None:
cstr_list.append("%s=%s" % (k, v))
if len(args) == 1:
a = args[0]
if a.find('=') >= 0:
cstr_list.append(a)
else:
cstr_list.append("dbname=%s" % a)
elif len(args) > 1:
print "too many arguments, use --help to see syntax"
sys.exit(1)
self.initial_connstr = " ".join(cstr_list)
def db_connect(self, connstr, quiet=False):
db = skytools.connect_database(connstr)
db.set_isolation_level(0) # autocommit
q = "select current_database(), current_setting('server_version')"
curs = db.cursor()
curs.execute(q)
res = curs.fetchone()
self.cur_database = res[0]
self.server_version = res[1]
q = "select pgq.version()"
try:
curs.execute(q)
res = curs.fetchone()
self.pgq_version = res[0]
except psycopg2.ProgrammingError:
self.pgq_version = "<none>"
if not quiet:
print "qadmin (%s, server %s, pgq %s)" % (__version__, self.server_version, self.pgq_version)
#print "Connected to %r" % connstr
return db
def run(self, argv):
self.parse_cmdline(argv)
if self.cmd_file is not None and self.cmd_str is not None:
print "cannot handle -c and -f together"
sys.exit(1)
# append ; to cmd_str if needed
if self.cmd_str and not self.cmd_str.rstrip().endswith(';'):
self.cmd_str += ';'
cmd_str = self.cmd_str
if self.cmd_file:
cmd_str = open(self.cmd_file, "r").read()
try:
self.db = self.db_connect(self.initial_connstr, quiet=True)
except psycopg2.Error, d:
print str(d).strip()
sys.exit(1)
if cmd_str:
self.exec_string(cmd_str)
else:
self.main_loop()
def main_loop(self):
readline.parse_and_bind('tab: complete')
readline.set_completer(self.rl_completer_safe)
#print 'delims: ', repr(readline.get_completer_delims())
# remove " from delims
#readline.set_completer_delims(" \t\n`~!@#$%^&*()-=+[{]}\\|;:',<>/?")
hist_file = os.path.expanduser("~/.qadmin_history")
try:
readline.read_history_file(hist_file)
except IOError:
pass
print "Welcome to qadmin %s (server %s), the PgQ interactive terminal." % (__version__, self.server_version)
print "Use 'show help;' to see available commands."
while 1:
try:
ln = self.line_input()
self.exec_string(ln)
except KeyboardInterrupt:
print
except EOFError:
print
break
except psycopg2.Error, d:
print 'ERROR:', str(d).strip()
except Exception:
traceback.print_exc()
self.reset_comp_cache()
try:
readline.write_history_file(hist_file)
except IOError:
pass
def rl_completer(self, curword, state):
curline = readline.get_line_buffer()
start = readline.get_begidx()
end = readline.get_endidx()
pfx = curline[:start]
sglist = self.find_suggestions(pfx, curword)
if state < len(sglist):
return sglist[state]
return None
def rl_completer_safe(self, curword, state):
try:
return self.rl_completer(curword, state)
except BaseException, det:
print 'got some error', str(det)
def line_input(self):
qname = "(noqueue)"
if self.cur_queue:
qname = self.cur_queue
p = "%s@%s> " % (qname, self.cur_database)
return raw_input(p)
def sql_words(self, sql):
return skytools.sql_tokenizer(sql,
standard_quoting = True,
fqident = True,
show_location = True,
ignore_whitespace = True)
def reset_comp_cache(self):
self.comp_cache = {}
def find_suggestions(self, pfx, curword, params = {}):
# refresh word cache
c_pfx = self.comp_cache.get('comp_pfx')
c_list = self.comp_cache.get('comp_list', [])
c_pos = self.comp_cache.get('comp_pos')
if c_pfx != pfx:
c_list, c_pos = self.find_suggestions_real(pfx, params)
orig_pos = c_pos
while c_pos < len(pfx) and pfx[c_pos].isspace():
c_pos += 1
#print repr(pfx), orig_pos, c_pos
self.comp_cache['comp_pfx'] = pfx
self.comp_cache['comp_list'] = c_list
self.comp_cache['comp_pos'] = c_pos
skip = len(pfx) - c_pos
if skip:
curword = pfx[c_pos : ] + curword
# generate suggestions
wlen = len(curword)
res = []
for cword in c_list:
if curword == cword[:wlen]:
res.append(cword)
# resync with readline offset
if skip:
res = [s[skip:] for s in res]
#print '\nfind_suggestions', repr(pfx), repr(curword), repr(res), repr(c_list)
return res
def find_suggestions_real(self, pfx, params):
# find level
node = top_level
pos = 0
xpos = 0
xnode = node
for typ, w, pos in self.sql_words(pfx):
w = normalize_any(typ, w)
node = node.get_next(typ, w, params)
if not node:
break
xnode = node
xpos = pos
# find possible matches
if xnode:
return (xnode.get_completions(params), xpos)
else:
return ([], xpos)
def exec_string(self, ln, eof = False):
node = top_level
params = {}
self.tokens = []
for typ, w, pos in self.sql_words(ln):
self.tokens.append((typ, w))
w = normalize_any(typ, w)
if typ == 'error':
print 'syntax error 1:', repr(ln)
return
onode = node
node = node.get_next(typ, w, params)
if not node:
print "syntax error 2:", repr(ln), repr(typ), repr(w), repr(params)
return
if node == top_level:
self.exec_params(params)
params = {}
self.tokens = []
if eof:
if params:
self.exec_params(params)
elif node != top_level:
print "multi-line commands not supported:", repr(ln)
def exec_params(self, params):
#print 'RUN', params
cmd = params.get('cmd')
cmd2 = params.get('cmd2')
cmd3 = params.get('cmd3')
if not cmd:
print 'parse error: no command found'
return
if cmd2:
cmd = "%s_%s" % (cmd, cmd2)
if cmd3:
cmd = "%s_%s" % (cmd, cmd3)
#print 'RUN', repr(params)
fn = getattr(self, 'cmd_' + cmd, self.execute_sql)
fn(params)
def cmd_connect(self, params):
qname = params.get('queue', self.cur_queue)
if 'node' in params and not qname:
print 'node= needs a queue also'
return
# load raw connection params
cdata = []
for k in ('dbname', 'host', 'port', 'user', 'password'):
if k in params:
arg = "%s=%s" % (k, params[k])
cdata.append(arg)
# raw connect
if cdata:
if 'node' in params:
print 'node= cannot be used together with raw params'
return
cstr = " ".join(cdata)
self.db = self.db_connect(cstr)
# connect to queue
if qname:
curs = self.db.cursor()
q = "select queue_name from pgq.get_queue_info(%s)"
curs.execute(q, [qname])
res = curs.fetchall()
if len(res) == 0:
print 'queue not found'
return
if 'node' in params:
q = "select node_location from pgq_node.get_queue_locations(%s)"\
" where node_name = %s"
curs.execute(q, [qname, params['node']])
res = curs.fetchall()
if len(res) == 0:
print "node not found"
return
cstr = res[0]['node_location']
self.db = self.db_connect(cstr)
# set default queue
if 'queue' in params:
self.cur_queue = qname
print "CONNECT"
def cmd_show_version (self, params):
print "qadmin version %s" % __version__
print "server version %s" % self.server_version
print "pgq version %s" % self.pgq_version
def cmd_install(self, params):
pgq_objs = [
skytools.DBLanguage("plpgsql"),
#skytools.DBFunction("txid_current_snapshot", 0, sql_file="txid.sql"),
skytools.DBSchema("pgq", sql_file="pgq.sql"),
skytools.DBSchema("pgq_ext", sql_file="pgq_ext.sql"),
skytools.DBSchema("pgq_node", sql_file="pgq_node.sql"),
skytools.DBSchema("pgq_coop", sql_file="pgq_coop.sql"),
]
londiste_objs = pgq_objs + [
skytools.DBSchema("londiste", sql_file="londiste.sql"),
]
mod_map = {
'londiste': londiste_objs,
'pgq': pgq_objs,
}
mod_name = params['module']
objs = mod_map[mod_name]
if not self.db:
print "no db?"
return
curs = self.db.cursor()
skytools.db_install(curs, objs, None)
print "INSTALL"
def cmd_show_queue(self, params):
queue = params.get('queue')
if queue is None:
# "show queue" without args, show all if not connected to
# specific queue
queue = self.cur_queue
if not queue:
queue = '*'
curs = self.db.cursor()
fields = [
"queue_name",
"queue_cur_table || '/' || queue_ntables as tables",
"queue_ticker_max_count as max_count",
"queue_ticker_max_lag as max_lag",
"queue_ticker_idle_period as idle_period",
"queue_ticker_paused as paused",
"ticker_lag",
"ev_per_sec",
"ev_new",
]
pfx = "select " + ",".join(fields)
if queue == '*':
q = pfx + " from pgq.get_queue_info()"
curs.execute(q)
else:
q = pfx + " from pgq.get_queue_info(%s)"
curs.execute(q, [queue])
display_result(curs, 'Queue "%s":' % queue)
def cmd_show_consumer(self, params):
"""Show consumer status"""
consumer = params.get('consumer', '*')
queue = params.get('queue', '*')
q_queue = (queue != '*' and queue or None)
q_consumer = (consumer != '*' and consumer or None)
curs = self.db.cursor()
q = "select * from pgq.get_consumer_info(%s, %s)"
curs.execute(q, [q_queue, q_consumer])
display_result(curs, 'Consumer "%s" on queue "%s":' % (consumer, queue))
def cmd_show_node(self, params):
"""Show node information."""
# TODO: This should additionally show node roles, lags and hierarchy.
# Similar to londiste "status".
node = params.get('node', '*')
queue = params.get('queue', '*')
q_queue = (queue != '*' and queue or None)
q_node = (node != '*' and node or None)
curs = self.db.cursor()
q = """select queue_name, node_name, node_location, dead
from pgq_node.node_location
where node_name = coalesce(%s, node_name)
and queue_name = coalesce(%s, queue_name)
order by 1,2"""
curs.execute(q, [q_node, q_queue])
display_result(curs, 'Node "%s" on queue "%s":' % (node, queue))
def cmd_show_batch(self, params):
batch_id = params.get('batch_id')
consumer = params.get('consumer')
queue = self.cur_queue
if not queue:
print 'No default queue'
return
curs = self.db.cursor()
if consumer:
q = "select current_batch from pgq.get_consumer_info(%s, %s)"
curs.execute(q, [queue, consumer])
res = curs.fetchall()
if len(res) != 1:
print 'no such consumer'
return
batch_id = res[0]['current_batch']
if batch_id is None:
print 'consumer has no open batch'
return
q = "select * from pgq.get_batch_events(%s)"
curs.execute(q, [batch_id])
display_result(curs, 'Batch events:')
def cmd_register_consumer(self, params):
queue = params.get("queue", self.cur_queue)
if not queue:
print 'No queue specified'
return
at_tick = params.get('at_tick')
copy_reg = params.get('copy_reg')
consumer = params['consumer']
curs = self.db.cursor()
# copy other registration
if copy_reg:
q = "select coalesce(next_tick, last_tick) as pos from pgq.get_consumer_info(%s, %s)"
curs.execute(q, [queue, copy_reg])
reg = curs.fetchone()
if not reg:
print "Consumer %s not registered on queue %d" % (copy_reg, queue)
return
at_tick = reg['pos']
# avoid double reg if specific pos is not requested
if not at_tick:
q = "select * from pgq.get_consumer_info(%s, %s)"
curs.execute(q, [queue, consumer])
if curs.fetchone():
print 'Consumer already registered'
return
if at_tick:
q = "select * from pgq.register_consumer_at(%s, %s, %s)"
curs.execute(q, [queue, consumer, int(at_tick)])
else:
q = "select * from pgq.register_consumer(%s, %s)"
curs.execute(q, [queue, consumer])
print "REGISTER"
def cmd_register_subconsumer(self, params):
queue = params.get("queue", self.cur_queue)
if not queue:
print 'No queue specified'
return
subconsumer = params['subconsumer']
consumer = params.get("consumer")
if not consumer:
print 'No consumer specified'
return
curs = self.db.cursor()
_subcon_name = '%s.%s' % (consumer, subconsumer)
q = "select * from pgq.get_consumer_info(%s, %s)"
curs.execute(q, [queue, _subcon_name])
if curs.fetchone():
print 'Subconsumer already registered'
return
q = "select * from pgq_coop.register_subconsumer(%s, %s, %s)"
curs.execute(q, [queue, consumer, subconsumer])
print "REGISTER"
def cmd_unregister_consumer(self, params):
queue = params.get("queue", self.cur_queue)
if not queue:
print 'No queue specified'
return
consumer = params['consumer']
curs = self.db.cursor()
if consumer == '*':
q = 'select consumer_name from pgq.get_consumer_info(%s)'
curs.execute(q, [queue])
consumers = [row['consumer_name'] for row in curs.fetchall()]
else:
consumers = [consumer]
q = "select * from pgq.unregister_consumer(%s, %s)"
for consumer in consumers:
curs.execute(q, [queue, consumer])
print "UNREGISTER"
def cmd_unregister_subconsumer(self, params):
queue = params.get("queue", self.cur_queue)
if not queue:
print 'No queue specified'
return
subconsumer = params["subconsumer"]
consumer = params['consumer']
batch_handling = int(params.get('close') is not None)
curs = self.db.cursor()
if subconsumer == '*':
q = 'select consumer_name from pgq.get_consumer_info(%s)'
curs.execute(q, [queue])
subconsumers = [row['consumer_name'].split('.')[1]
for row in curs.fetchall()
if row['consumer_name'].startswith('%s.' % consumer)]
else:
subconsumers = [subconsumer]
q = "select * from pgq_coop.unregister_subconsumer(%s, %s, %s, %s)"
for subconsumer in subconsumers:
curs.execute(q, [queue, consumer, subconsumer, batch_handling])
print "UNREGISTER"
def cmd_create_queue(self, params):
curs = self.db.cursor()
q = "select * from pgq.get_queue_info(%(queue)s)"
curs.execute(q, params)
if curs.fetchone():
print "Queue already exists"
return
q = "select * from pgq.create_queue(%(queue)s)"
curs.execute(q, params)
print "CREATE"
def cmd_drop_queue(self, params):
curs = self.db.cursor()
q = "select * from pgq.drop_queue(%(queue)s)"
curs.execute(q, params)
print "DROP"
def cmd_alter_queue(self, params):
"""Alter queue parameters, accepts * for all queues"""
queue = params.get('queue')
curs = self.db.cursor()
if queue == '*':
# operate on list of queues
q = "select queue_name from pgq.get_queue_info()"
curs.execute(q)
qlist = [ r[0] for r in curs.fetchall() ]
else:
# just single queue specified
qlist = [ queue ]
for qname in qlist:
params['queue'] = qname
# loop through the parameters, passing any unrecognized
# key down pgq.set_queue_config
for k in params:
if k in ('queue', 'cmd', 'cmd2'):
continue
q = "select * from pgq.set_queue_config" \
"(%%(queue)s, '%s', %%(%s)s)" % (k, k)
curs.execute(q, params)
print "ALTER"
def cmd_show_help(self, params):
print __doc__
def cmd_exit(self, params):
sys.exit(0)
##
## Londiste
##
def cmd_londiste_missing(self, params):
"""Show missing objects."""
queue = self.cur_queue
curs = self.db.cursor()
q = """select * from londiste.local_show_missing(%s)"""
curs.execute(q, [queue])
display_result(curs, 'Missing objects on queue "%s":' % (queue))
def cmd_londiste_tables(self, params):
"""Show local tables."""
queue = self.cur_queue
curs = self.db.cursor()
q = """select * from londiste.get_table_list(%s) where local"""
curs.execute(q, [queue])
display_result(curs, 'Local tables on queue "%s":' % (queue))
def cmd_londiste_seqs(self, params):
"""Show local seqs."""
queue = self.cur_queue
curs = self.db.cursor()
q = """select * from londiste.get_seq_list(%s) where local"""
curs.execute(q, [queue])
display_result(curs, 'Sequences on queue "%s":' % (queue))
def cmd_londiste_add_table(self, params):
"""Add table."""
args = []
for a in ('skip_truncate', 'expect_sync', 'backup', 'no_triggers', 'skip'):
if a in params:
args.append(a)
for a in ('tgflags', 'ignore', 'pkey', 'when',
'ev_type', 'ev_data',
'ev_extra1', 'ev_extra2', 'ev_extra3', 'ev_extra4'):
if a in params:
args.append("%s=%s" % (a, params[a]))
curs = self.db.cursor()
q = """select * from londiste.local_add_table(%s, %s, %s)"""
for tbl in params['tables']:
curs.execute(q, [self.cur_queue, tbl, args])
res = curs.fetchone()
print res[0], res[1]
print 'ADD_TABLE'
def cmd_londiste_remove_table(self, params):
"""Remove table."""
curs = self.db.cursor()
q = """select * from londiste.local_remove_table(%s, %s)"""
for tbl in params['tables']:
curs.execute(q, [self.cur_queue, tbl])
res = curs.fetchone()
print res[0], res[1]
print 'REMOVE_TABLE'
def cmd_londiste_add_seq(self, params):
"""Add seq."""
curs = self.db.cursor()
q = """select * from londiste.local_add_seq(%s, %s)"""
for seq in params['seqs']:
curs.execute(q, [self.cur_queue, seq])
res = curs.fetchone()
print res[0], res[1]
print 'ADD_SEQ'
def cmd_londiste_remove_seq(self, params):
"""Remove seq."""
curs = self.db.cursor()
q = """select * from londiste.local_remove_seq(%s, %s)"""
for seq in params['seqs']:
curs.execute(q, [self.cur_queue, seq])
res = curs.fetchone()
print res[0], res[1]
print 'REMOVE_SEQ:', res[0], res[1]
## generic info
def cmd_show_table(self, params):
print '-' * 64
tbl = params['table']
curs = self.db.cursor()
s = skytools.TableStruct(curs, tbl)
s.create(fakecurs(), skytools.T_ALL)
print '-' * 64
def cmd_show_sequence(self, params):
print '-' * 64
seq = params['seq']
curs = self.db.cursor()
s = skytools.SeqStruct(curs, seq)
s.create(fakecurs(), skytools.T_ALL)
print '-' * 64
## sql pass-through
def execute_sql(self, params):
tks = [tk[1] for tk in self.tokens]
sql = ' '.join(tks)
curs = self.db.cursor()
curs.execute(sql)
if curs.description:
display_result(curs, None)
print curs.statusmessage
class fakecurs:
def execute(self, sql):
print sql
def main():
global script
script = AdminConsole()
script.run(sys.argv[1:])
if __name__ == '__main__':
main()
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