enc = args.get('encoding')
if enc:
- self.enc = EncodingValidator(self.log, enc)
+ self.encoding_validator = EncodingValidator(self.log, enc)
else:
- self.enc = None
+ self.encoding_validator = None
def process_event(self, ev, sql_queue_func, arg):
row = self.parse_row_data(ev)
if len(ev.type) == 1:
if not self.allow_sql_event:
raise Exception('SQL events not supported by this handler')
- if self.enc:
- return self.enc.validate_string(ev.data, self.table_name)
+ if self.encoding_validator:
+ return self.encoding_validator.validate_string(ev.data, self.table_name)
return ev.data
else:
row = skytools.db_urldecode(ev.data)
- if self.enc:
- return self.enc.validate_dict(row, self.table_name)
+ if self.encoding_validator:
+ return self.encoding_validator.validate_dict(row, self.table_name)
return row
def real_copy(self, src_tablename, src_curs, dst_curs, column_list):
copied
"""
- if self.enc:
+ if self.encoding_validator:
def _write_hook(obj, data):
- return self.enc.validate_copy(data, column_list, src_tablename)
+ return self.encoding_validator.validate_copy(data, column_list, src_tablename)
else:
_write_hook = None
condition = self.get_copy_condition(src_curs, dst_curs)
--skip-truncate should be used and --create switch is to be avoided.
"""
-import sys
-import datetime
import codecs
+import datetime
import re
+import sys
+from functools import partial
+
import skytools
-from londiste.handler import BaseHandler, EncodingValidator
from skytools import quote_ident, quote_fqident, UsageError
from skytools.dbstruct import *
from skytools.utf8 import safe_utf8_decode
-from functools import partial
+
+from londiste.handler import EncodingValidator
from londiste.handlers import handler_args, update
+from londiste.handlers.part import PartHandler
__all__ = ['Dispatcher']
#------------------------------------------------------------------------------
-class Dispatcher(BaseHandler):
+class Dispatcher (PartHandler):
"""Partitioned loader.
Splits events into partitions, if requested.
Then applies them without further processing.
# compat for dest-table
dest_table = args.get('table', dest_table)
- BaseHandler.__init__(self, table_name, args, dest_table)
+ super(Dispatcher, self).__init__(table_name, args, dest_table)
# show args
self.log.debug("dispatch.init: table_name=%r, args=%r", table_name, args)
self.conf = self.get_config()
hdlr_cls = ROW_HANDLERS[self.conf.row_mode]
self.row_handler = hdlr_cls(self.log)
- if self.conf.encoding:
- self.encoding_validator = EncodingValidator(self.log,
- self.conf.encoding)
- else:
- self.encoding_validator = None
def _parse_args_from_doc (self):
doc = __doc__
conf.field_map[tmp[0]] = tmp[0]
else:
conf.field_map[tmp[0]] = tmp[1]
- # encoding validator
- conf.encoding = self.args.get('encoding')
return conf
def get_arg(self, name, value_list, default = None):
raise Exception('Bad argument %s value %r' % (name, val))
return val
+ def _validate_key(self):
+ pass
+
def reset(self):
"""Called before starting to process a batch.
Should clean any pending data."""
- BaseHandler.reset(self)
+ super(Dispatcher, self).reset()
def prepare_batch(self, batch_info, dst_curs):
"""Called on first event for this table in current batch."""
if self.conf.table_mode != 'ignore':
self.batch_info = batch_info
self.dst_curs = dst_curs
- #BaseHandler.prepare_batch(self, batch_info, dst_curs)
+ if self.key is not None:
+ super(Dispatcher, self).prepare_batch(batch_info, dst_curs)
def filter_data(self, data):
"""Process with fields skip and map"""
pkeys = [fmap[p] for p in pkeys if p in fmap]
return pkeys
- def process_event(self, ev, sql_queue_func, arg):
+ def _process_event(self, ev, sql_queue_func, arg):
"""Process a event.
Event should be added to sql_queue or executed directly.
"""
self.row_handler.add_table(dst, LOADERS[self.conf.load_mode],
self.pkeys, self.conf)
self.row_handler.process(dst, op, data)
- #BaseHandler.process_event(self, ev, sql_queue_func, arg)
def finish_batch(self, batch_info, dst_curs):
"""Called when batch finishes."""
if self.conf.table_mode != 'ignore':
self.row_handler.flush(dst_curs)
- #BaseHandler.finish_batch(self, batch_info, dst_curs)
+ #super(Dispatcher, self).finish_batch(batch_info, dst_curs)
def get_part_name(self):
# if custom part name template given, use it
if res:
self.log.info("Dropped tables: %s", ", ".join(res))
+ def get_copy_condition(self, src_curs, dst_curs):
+ """ Prepare where condition for copy and replay filtering.
+ """
+ if self.key is not None:
+ return super(Dispatcher, self).get_copy_condition(src_curs, dst_curs)
+ return ''
+
def real_copy(self, tablename, src_curs, dst_curs, column_list):
"""do actual table copy and return tuple with number of bytes and rows
copied
"""
_src_cols = _dst_cols = column_list
- condition = ''
+ condition = self.get_copy_condition (src_curs, dst_curs)
if self.conf.skip_fields:
_src_cols = [col for col in column_list
else:
_write_hook = None
- return skytools.full_copy(tablename, src_curs, dst_curs, _src_cols, condition,
+ return skytools.full_copy(tablename, src_curs, dst_curs,
+ _src_cols, condition,
dst_tablename = self.dest_table,
dst_column_list = _dst_cols,
write_hook = _write_hook)
# primary key columns
self.key = args.get('key')
- if self.key is None:
- raise Exception('Specify key field as key argument')
+ self._validate_key()
# hash function & full expression
hashfunc = args.get('hashfunc', self.DEFAULT_HASHFUNC)
skytools.quote_ident(self.key))
self.hashexpr = args.get('hashexpr', self.hashexpr)
+ def _validate_key(self):
+ if self.key is None:
+ raise Exception('Specify key field as key argument')
+
def reset(self):
"""Forget config info."""
self.max_part = None
def add(self, trigger_arg_list):
"""Let trigger put hash into extra3"""
-
arg = "ev_extra3='hash='||%s" % self.hashexpr
trigger_arg_list.append(arg)
TableHandler.add(self, trigger_arg_list)
def process_event(self, ev, sql_queue_func, arg):
"""Filter event by hash in extra3, apply only local part."""
- if ev.extra3:
+ if ev.extra3 and self.key is not None:
meta = skytools.db_urldecode(ev.extra3)
self.log.debug('part.process_event: hash=%d, max_part=%s, local_part=%d',
int(meta['hash']), self.max_part, self.local_part)
if (int(meta['hash']) & self.max_part) != self.local_part:
self.log.debug('part.process_event: not my event')
return
+ self._process_event(ev, sql_queue_func, arg)
+
+ def _process_event(self, ev, sql_queue_func, arg):
self.log.debug('part.process_event: my event, processing')
TableHandler.process_event(self, ev, sql_queue_func, arg)
projects / skytools.git / commitdiff