+++ /dev/null
-# genitable.py
-#
-# implements support for geni records stored in db tables
-#
-# TODO: Use existing PLC database methods? or keep this separate?
-
-### $Id$
-### $URL$
-
-import report
-import pgdb
-from pg import DB, ProgrammingError
-from sfa.util.PostgreSQL import *
-from sfa.trust.gid import *
-from sfa.util.record import *
-from sfa.util.debug import *
-from sfa.util.config import *
-from sfa.util.filter import *
-
-class GeniTable(list):
-
- GENI_TABLE_PREFIX = "sfa"
-
- def __init__(self, record_filter = None):
-
- # pgsql doesn't like table names with "." in them, to replace it with "$"
- self.tablename = GeniTable.GENI_TABLE_PREFIX
- self.config = Config()
- self.db = PostgreSQL(self.config)
- # establish a connection to the pgsql server
- cninfo = self.config.get_plc_dbinfo()
- self.cnx = DB(cninfo['dbname'], cninfo['address'], port=cninfo['port'], user=cninfo['user'], passwd=cninfo['password'])
-
- if record_filter:
- records = self.find(record_filter)
- for record in reocrds:
- self.append(record)
-
- def exists(self):
- tableList = self.cnx.get_tables()
- if 'public.' + self.tablename in tableList:
- return True
- if 'public."' + self.tablename + '"' in tableList:
- return True
- return False
-
- def db_fields(self, obj=None):
-
- db_fields = self.db.fields(self.GENI_TABLE_PREFIX)
- return dict( [ (key,value) for (key, value) in obj.items() \
- if key in db_fields and
- self.is_writable(key, value, GeniRecord.fields)] )
-
- @staticmethod
- def is_writable (key,value,dict):
- # if not mentioned, assume it's writable (e.g. deleted ...)
- if key not in dict: return True
- # if mentioned but not linked to a Parameter object, idem
- if not isinstance(dict[key], Parameter): return True
- # if not marked ro, it's writable
- if not dict[key].ro: return True
-
- return False
-
-
- def create(self):
-
- querystr = "CREATE TABLE " + self.tablename + " ( \
- record_id serial PRIMARY KEY , \
- hrn text NOT NULL, \
- authority text NOT NULL, \
- peer_authority text, \
- gid text, \
- type text NOT NULL, \
- pointer integer, \
- date_created timestamp without time zone NOT NULL DEFAULT CURRENT_TIMESTAMP, \
- last_updated timestamp without time zone NOT NULL DEFAULT CURRENT_TIMESTAMP);"
- template = "CREATE INDEX %s_%s_idx ON %s (%s);"
- indexes = [template % ( self.tablename, field, self.tablename, field) \
- for field in ['hrn', 'type', 'authority', 'peer_authority', 'pointer']]
- # IF EXISTS doenst exist in postgres < 8.2
- try:
- self.cnx.query('DROP TABLE IF EXISTS ' + self.tablename)
- except ProgrammingError:
- try:
- self.cnx.query('DROP TABLE ' + self.tablename)
- except ProgrammingError:
- pass
-
- self.cnx.query(querystr)
- for index in indexes:
- self.cnx.query(index)
-
- def remove(self, record):
- query_str = "DELETE FROM %s WHERE record_id = %s" % \
- (self.tablename, record['record_id'])
- self.cnx.query(query_str)
-
- # if this is a site, remove all records where 'authority' == the
- # site's hrn
- if record['type'] == 'site':
- sql = " DELETE FROM %s WHERE authority = %s" % \
- (self.tablename, record['hrn'])
- self.cnx.query(sql)
-
- def insert(self, record):
- db_fields = self.db_fields(record)
- keys = db_fields.keys()
- values = [self.db.param(key, value) for (key, value) in db_fields.items()]
- query_str = "INSERT INTO " + self.tablename + \
- "(" + ",".join(keys) + ") " + \
- "VALUES(" + ",".join(values) + ")"
- self.db.do(query_str, db_fields)
- self.db.commit()
- result = self.find({'hrn': record['hrn'], 'type': record['type'], 'peer_authority': record['peer_authority']})
- if not result:
- record_id = None
- elif isinstance(result, list):
- record_id = result[0]['record_id']
- else:
- record_id = result['record_id']
-
- return record_id
-
- def update(self, record):
- db_fields = self.db_fields(record)
- keys = db_fields.keys()
- values = [self.db.param(key, value) for (key, value) in db_fields.items()]
- columns = ["%s = %s" % (key, value) for (key, value) in zip(keys, values)]
- query_str = "UPDATE %s SET %s WHERE record_id = %s" % \
- (self.tablename, ", ".join(columns), record['record_id'])
- self.db.do(query_str, db_fields)
- self.db.commit()
-
- def quote_string(self, value):
- return str(self.quote(value))
-
- def quote(self, value):
- """
- Returns quoted version of the specified value.
- """
-
- # The pgdb._quote function is good enough for general SQL
- # quoting, except for array types.
- if isinstance(value, (list, tuple, set)):
- return "ARRAY[%s]" % ", ".join(map, self.quote_string, value)
- else:
- return pgdb._quote(value)
-
- def find(self, record_filter = None, columns=None):
- if not columns:
- columns = "*"
- else:
- columns = ",".join(columns)
- sql = "SELECT %s FROM %s WHERE True " % (columns, self.tablename)
-
- if isinstance(record_filter, (list, tuple, set)):
- ints = filter(lambda x: isinstance(x, (int, long)), record_filter)
- strs = filter(lambda x: isinstance(x, StringTypes), record_filter)
- record_filter = Filter(GeniRecord.all_fields, {'record_id': ints, 'hrn': strs})
- sql += "AND (%s) %s " % record_filter.sql("OR")
- elif isinstance(record_filter, dict):
- record_filter = Filter(GeniRecord.all_fields, record_filter)
- sql += " AND (%s) %s" % record_filter.sql("AND")
- elif isinstance(record_filter, StringTypes):
- record_filter = Filter(GeniRecord.all_fields, {'hrn':[record_filter]})
- sql += " AND (%s) %s" % record_filter.sql("AND")
- elif isinstance(record_filter, int):
- record_filter = Filter(GeniRecord.all_fields, {'record_id':[record_filter]})
- sql += " AND (%s) %s" % record_filter.sql("AND")
-
- results = self.cnx.query(sql).dictresult()
- if isinstance(results, dict):
- results = [results]
- return results
-
- def findObjects(self, record_filter = None, columns=None):
-
- results = self.find(record_filter, columns)
- result_rec_list = []
- for result in results:
- if result['type'] in ['authority']:
- result_rec_list.append(AuthorityRecord(dict=result))
- elif result['type'] in ['node']:
- result_rec_list.append(NodeRecord(dict=result))
- elif result['type'] in ['slice']:
- result_rec_list.append(SliceRecord(dict=result))
- elif result['type'] in ['user']:
- result_rec_list.append(UserRecord(dict=result))
- else:
- result_rec_list.append(GeniRecord(dict=result))
- return result_rec_list
-
-
- def drop(self):
- try:
- self.cnx.query('DROP TABLE IF EXISTS ' + self.tablename)
- except ProgrammingError:
- try:
- self.cnx.query('DROP TABLE ' + self.tablename)
- except ProgrammingError:
- pass
-
- @staticmethod
- def geni_records_purge(cninfo):
-
- cnx = DB(cninfo['dbname'], cninfo['address'],
- port=cninfo['port'], user=cninfo['user'], passwd=cninfo['password'])
- tableList = cnx.get_tables()
- for table in tableList:
- if table.startswith(GeniTable.GENI_TABLE_PREFIX) or \
- table.startswith('public.' + GeniTable.GENI_TABLE_PREFIX) or \
- table.startswith('public."' + GeniTable.GENI_TABLE_PREFIX):
- report.trace("dropping table " + table)
- cnx.query("DROP TABLE " + table)
git://git.onelab.eu / sfa.git / blobdiff