+++ /dev/null
-#
-# implements support for SFA records stored in db tables
-#
-# TODO: Use existing PLC database methods? or keep this separate?
-
-from types import StringTypes
-
-from sfa.util.config import Config
-
-from sfa.storage.alchemy import DB
-#from sfa.storage.PostgreSQL import PostgreSQL
-from sfa.storage.parameter import Parameter
-from sfa.storage.filter import Filter
-from sfa.storage.record import SfaRecord, AuthorityRecord, NodeRecord, SliceRecord, UserRecord
-
-class SfaTable(list):
-
- SFA_TABLE_PREFIX = "records"
-
- def __init__(self, record_filter = None):
-
- self.tablename = SfaTable.SFA_TABLE_PREFIX
- self.config = Config()
- self.db = PostgreSQL(self.config)
-
- if record_filter:
- records = self.find(record_filter)
- for record in records:
- self.append(record)
-
- def db_fields(self, obj=None):
-
- db_fields = self.db.fields(self.SFA_TABLE_PREFIX)
- return dict( [ (key,value) for (key, value) in obj.iteritems() \
- if key in db_fields and
- self.is_writable(key, value, SfaRecord.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 clear (self):
- self.db.do("DELETE from %s"%self.tablename)
- self.db.commit()
-
- # what sfa-nuke does
- def nuke (self):
- self.clear()
-
- def remove(self, record):
- params = {'record_id': record['record_id']}
- template = "DELETE FROM %s " % self.tablename
- sql = template + "WHERE record_id = %(record_id)s"
- self.db.do(sql, params)
-
- # if this is a site, remove all records where 'authority' == the
- # site's hrn
- if record['type'] == 'authority':
- params = {'authority': record['hrn']}
- sql = template + "WHERE authority = %(authority)s"
- self.db.do(sql, params)
- self.db.commit()
-
- 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.iteritems()]
- 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.iteritems()]
- 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.db.quote(value))
-
- def quote(self, value):
- return self.db.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(SfaRecord.all_fields, {'record_id': ints, 'hrn': strs})
- sql += "AND (%s) %s " % record_filter.sql("OR")
- elif isinstance(record_filter, dict):
- record_filter = Filter(SfaRecord.all_fields, record_filter)
- sql += " AND (%s) %s" % record_filter.sql("AND")
- elif isinstance(record_filter, StringTypes):
- record_filter = Filter(SfaRecord.all_fields, {'hrn':[record_filter]})
- sql += " AND (%s) %s" % record_filter.sql("AND")
- elif isinstance(record_filter, int):
- record_filter = Filter(SfaRecord.all_fields, {'record_id':[record_filter]})
- sql += " AND (%s) %s" % record_filter.sql("AND")
-
- results = self.db.selectall(sql)
- 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(SfaRecord(dict=result))
- return result_rec_list
-
-
git://git.onelab.eu / sfa.git / blobdiff