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annotate roundup/backends/back_sqlite.py @ 5143:9cebf686c552

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issue2550727: db.newid is broken with sqlite. Added proper transaction lock around the sql code to get a new id. The the locking that pysqlite attempts had to be defeated because it is broken. Had to explicitly manage transactions with BEGIN IMMEDIATE and call sql_commit. Note that this reduces performance by 30% in return for accuracy. Also use update call set newid=newid+1 rather than incrementing in python.
author John Rouillard <rouilj@ieee.org>
date Wed, 13 Jul 2016 22:30:07 -0400
parents e74c3611b138
children e1e40674a0bc
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1 """Implements a backend for SQLite.
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2
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3 See https://pysqlite.sourceforge.net/ for pysqlite info
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4
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5
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6 NOTE: we use the rdbms_common table creation methods which define datatypes
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7 for the columns, but sqlite IGNORES these specifications.
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8 """
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9 __docformat__ = 'restructuredtext'
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10
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11 import os, base64, marshal, shutil, time, logging
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12
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13 from roundup import hyperdb, date, password
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14 from roundup.backends import rdbms_common
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15 sqlite_version = None
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16 try:
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17 import sqlite3 as sqlite
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18 sqlite_version = 3
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19 except ImportError:
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20 try:
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21 from pysqlite2 import dbapi2 as sqlite
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22 if sqlite.version_info < (2,1,0):
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23 raise ValueError('pysqlite2 minimum version is 2.1.0+ '
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24 '- %s found'%sqlite.version)
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25 sqlite_version = 2
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26 except ImportError:
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27 import sqlite
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28 sqlite_version = 1
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29
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30 def db_exists(config):
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31 return os.path.exists(os.path.join(config.DATABASE, 'db'))
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32
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33 def db_nuke(config):
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34 shutil.rmtree(config.DATABASE)
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35
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36 class Database(rdbms_common.Database):
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37 """Sqlite DB backend implementation
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38
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39 attributes:
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40 dbtype:
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41 holds the value for the type of db. It is used by indexer to
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42 identify the database type so it can import the correct indexer
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43 module when using native text search mode.
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44 """
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45
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46 # char to use for positional arguments
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47 if sqlite_version in (2,3):
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48 arg = '?'
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49 else:
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50 arg = '%s'
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51
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52 dbtype = "sqlite"
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53
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54 # used by some code to switch styles of query
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55 implements_intersect = 1
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56
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57 hyperdb_to_sql_datatypes = {
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58 hyperdb.String : 'VARCHAR(255)',
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59 hyperdb.Date : 'VARCHAR(30)',
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60 hyperdb.Link : 'INTEGER',
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61 hyperdb.Interval : 'VARCHAR(255)',
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62 hyperdb.Password : 'VARCHAR(255)',
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63 hyperdb.Boolean : 'BOOLEAN',
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64 hyperdb.Number : 'REAL',
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65 hyperdb.Integer : 'INTEGER',
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66 }
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67 hyperdb_to_sql_value = {
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68 hyperdb.String : str,
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69 hyperdb.Date : lambda x: x.serialise(),
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70 hyperdb.Link : int,
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71 hyperdb.Interval : str,
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72 hyperdb.Password : str,
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73 hyperdb.Boolean : int,
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74 hyperdb.Integer : int,
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75 hyperdb.Number : lambda x: x,
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76 hyperdb.Multilink : lambda x: x, # used in journal marshalling
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77 }
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78 sql_to_hyperdb_value = {
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79 hyperdb.String : lambda x: isinstance(x, unicode) and x.encode('utf8') or str(x),
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80 hyperdb.Date : lambda x: date.Date(str(x)),
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81 hyperdb.Link : str, # XXX numeric ids
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82 hyperdb.Interval : date.Interval,
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83 hyperdb.Password : lambda x: password.Password(encrypted=x),
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84 hyperdb.Boolean : int,
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85 hyperdb.Integer : int,
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86 hyperdb.Number : rdbms_common._num_cvt,
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87 hyperdb.Multilink : lambda x: x, # used in journal marshalling
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88 }
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89
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90 def sqlite_busy_handler(self, data, table, count):
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91 """invoked whenever SQLite tries to access a database that is locked"""
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92 now = time.time()
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93 if count == 1:
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94 # Timeout for handling locked database (default 30s)
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95 self._busy_handler_endtime = now + self.config.RDBMS_SQLITE_TIMEOUT
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96 elif now > self._busy_handler_endtime:
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97 # timeout expired - no more retries
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98 return 0
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99 # sleep adaptively as retry count grows,
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100 # starting from about half a second
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101 time_to_sleep = 0.01 * (2 << min(5, count))
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102 time.sleep(time_to_sleep)
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103 return 1
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104
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105 def sql_open_connection(self):
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106 """Open a standard, non-autocommitting connection.
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107
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108 pysqlite will automatically BEGIN TRANSACTION for us.
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109 """
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110 # make sure the database directory exists
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111 # database itself will be created by sqlite if needed
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112 if not os.path.isdir(self.config.DATABASE):
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113 os.makedirs(self.config.DATABASE)
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114
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115 db = os.path.join(self.config.DATABASE, 'db')
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116 logging.getLogger('roundup.hyperdb').info('open database %r'%db)
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117 # set timeout (30 second default is extraordinarily generous)
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118 # for handling locked database
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119 if sqlite_version == 1:
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120 conn = sqlite.connect(db=db)
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121 conn.db.sqlite_busy_handler(self.sqlite_busy_handler)
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122 else:
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123 conn = sqlite.connect(db, timeout=self.config.RDBMS_SQLITE_TIMEOUT)
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124 conn.row_factory = sqlite.Row
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125
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126 # pysqlite2 / sqlite3 want us to store Unicode in the db but
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127 # that's not what's been done historically and it's definitely
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128 # not what the other backends do, so we'll stick with UTF-8
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129 if sqlite_version in (2, 3):
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130 conn.text_factory = str
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131
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132 cursor = conn.cursor()
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133 return (conn, cursor)
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134
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135 def open_connection(self):
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136 # ensure files are group readable and writable
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137 os.umask(self.config.UMASK)
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138
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139 (self.conn, self.cursor) = self.sql_open_connection()
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140
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141 try:
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142 self.load_dbschema()
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143 except sqlite.DatabaseError, error:
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144 if str(error) != 'no such table: schema':
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145 raise
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146 self.init_dbschema()
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147 self.sql('create table schema (schema varchar)')
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148 self.sql('create table ids (name varchar, num integer)')
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149 self.sql('create index ids_name_idx on ids(name)')
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150 self.create_version_2_tables()
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151
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152 def create_version_2_tables(self):
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153 self.sql('create table otks (otk_key varchar, '
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154 'otk_value varchar, otk_time integer)')
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155 self.sql('create index otks_key_idx on otks(otk_key)')
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156 self.sql('create table sessions (session_key varchar, '
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157 'session_time integer, session_value varchar)')
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158 self.sql('create index sessions_key_idx on '
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159 'sessions(session_key)')
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160
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161 # full-text indexing store
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162 self.sql('CREATE TABLE __textids (_class varchar, '
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163 '_itemid varchar, _prop varchar, _textid integer primary key) ')
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164 self.sql('CREATE TABLE __words (_word varchar, '
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165 '_textid integer)')
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166 self.sql('CREATE INDEX words_word_ids ON __words(_word)')
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167 self.sql('CREATE INDEX words_by_id ON __words (_textid)')
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168 self.sql('CREATE UNIQUE INDEX __textids_by_props ON '
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169 '__textids (_class, _itemid, _prop)')
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170 sql = 'insert into ids (name, num) values (%s,%s)'%(self.arg, self.arg)
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171 self.sql(sql, ('__textids', 1))
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172
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173 def add_new_columns_v2(self):
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174 # update existing tables to have the new actor column
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175 tables = self.database_schema['tables']
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176 for classname, spec in self.classes.items():
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177 if classname in tables:
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178 dbspec = tables[classname]
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179 self.update_class(spec, dbspec, force=1, adding_v2=1)
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180 # we've updated - don't try again
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181 tables[classname] = spec.schema()
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182
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183 def fix_version_3_tables(self):
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184 # NOOP - no restriction on column length here
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185 pass
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186
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187 def update_class(self, spec, old_spec, force=0, adding_v2=0):
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188 """ Determine the differences between the current spec and the
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189 database version of the spec, and update where necessary.
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190
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191 If 'force' is true, update the database anyway.
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192
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193 SQLite doesn't have ALTER TABLE, so we have to copy and
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194 regenerate the tables with the new schema.
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195 """
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196 new_spec = spec.schema()
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197 new_spec[1].sort()
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198 old_spec[1].sort()
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199 if not force and new_spec == old_spec:
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200 # no changes
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201 return 0
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202
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203 logging.getLogger('roundup.hyperdb').info(
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204 'update_class %s'%spec.classname)
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205
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206 # detect multilinks that have been removed, and drop their table
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207 old_has = {}
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208 for name, prop in old_spec[1]:
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209 old_has[name] = 1
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210 if name in spec.properties or not isinstance(prop, hyperdb.Multilink):
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211 continue
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212 # it's a multilink, and it's been removed - drop the old
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diff changeset
213 # table. First drop indexes.
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214 self.drop_multilink_table_indexes(spec.classname, name)
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215 sql = 'drop table %s_%s'%(spec.classname, prop)
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216 self.sql(sql)
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217
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218 # now figure how we populate the new table
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diff changeset
219 if adding_v2:
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220 fetch = ['_activity', '_creation', '_creator']
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221 else:
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diff changeset
222 fetch = ['_actor', '_activity', '_creation', '_creator']
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diff changeset
223 properties = spec.getprops()
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diff changeset
224 for propname,x in new_spec[1]:
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225 prop = properties[propname]
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226 if isinstance(prop, hyperdb.Multilink):
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227 if propname not in old_has:
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228 # we need to create the new table
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229 self.create_multilink_table(spec, propname)
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diff changeset
230 elif force:
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diff changeset
231 tn = '%s_%s'%(spec.classname, propname)
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232 # grabe the current values
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233 sql = 'select linkid, nodeid from %s'%tn
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234 self.sql(sql)
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diff changeset
235 rows = self.cursor.fetchall()
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236
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diff changeset
237 # drop the old table
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diff changeset
238 self.drop_multilink_table_indexes(spec.classname, propname)
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diff changeset
239 sql = 'drop table %s'%tn
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diff changeset
240 self.sql(sql)
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241
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242 # re-create and populate the new table
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diff changeset
243 self.create_multilink_table(spec, propname)
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244 sql = """insert into %s (linkid, nodeid) values
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245 (%s, %s)"""%(tn, self.arg, self.arg)
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246 for linkid, nodeid in rows:
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247 self.sql(sql, (int(linkid), int(nodeid)))
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248 elif propname in old_has:
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diff changeset
249 # we copy this col over from the old table
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diff changeset
250 fetch.append('_'+propname)
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251
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diff changeset
252 # select the data out of the old table
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diff changeset
253 fetch.append('id')
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diff changeset
254 fetch.append('__retired__')
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diff changeset
255 fetchcols = ','.join(fetch)
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diff changeset
256 cn = spec.classname
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diff changeset
257 sql = 'select %s from _%s'%(fetchcols, cn)
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diff changeset
258 self.sql(sql)
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diff changeset
259 olddata = self.cursor.fetchall()
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diff changeset
260
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diff changeset
261 # TODO: update all the other index dropping code
3e0961d6d44d Added the "actor" property.
Richard Jones <richard@users.sourceforge.net>
parents: 2075
diff changeset
262 self.drop_class_table_indexes(cn, old_spec[0])
3e0961d6d44d Added the "actor" property.
Richard Jones <richard@users.sourceforge.net>
parents: 2075
diff changeset
263
3e0961d6d44d Added the "actor" property.
Richard Jones <richard@users.sourceforge.net>
parents: 2075
diff changeset
264 # drop the old table
2514
091711fb2f8c Initial logging integration: replace all debug prints with logging calls...
Richard Jones <richard@users.sourceforge.net>
parents: 2374
diff changeset
265 self.sql('drop table _%s'%cn)
2077
3e0961d6d44d Added the "actor" property.
Richard Jones <richard@users.sourceforge.net>
parents: 2075
diff changeset
266
3e0961d6d44d Added the "actor" property.
Richard Jones <richard@users.sourceforge.net>
parents: 2075
diff changeset
267 # create the new table
3e0961d6d44d Added the "actor" property.
Richard Jones <richard@users.sourceforge.net>
parents: 2075
diff changeset
268 self.create_class_table(spec)
3e0961d6d44d Added the "actor" property.
Richard Jones <richard@users.sourceforge.net>
parents: 2075
diff changeset
269
3e0961d6d44d Added the "actor" property.
Richard Jones <richard@users.sourceforge.net>
parents: 2075
diff changeset
270 if olddata:
4774
3adff0fb0207 Fixed issue2550595: Allow migrating from roundup 0.x to 1.4
Thomas Arendsen Hein <thomas@intevation.de>
parents: 4421
diff changeset
271 inscols = ['id', '_actor', '_activity', '_creation', '_creator', '__retired__']
2217
98d3bf8ffb19 store Intervals as two columns (and other fixes
Richard Jones <richard@users.sourceforge.net>
parents: 2191
diff changeset
272 for propname,x in new_spec[1]:
98d3bf8ffb19 store Intervals as two columns (and other fixes
Richard Jones <richard@users.sourceforge.net>
parents: 2191
diff changeset
273 prop = properties[propname]
98d3bf8ffb19 store Intervals as two columns (and other fixes
Richard Jones <richard@users.sourceforge.net>
parents: 2191
diff changeset
274 if isinstance(prop, hyperdb.Multilink):
98d3bf8ffb19 store Intervals as two columns (and other fixes
Richard Jones <richard@users.sourceforge.net>
parents: 2191
diff changeset
275 continue
98d3bf8ffb19 store Intervals as two columns (and other fixes
Richard Jones <richard@users.sourceforge.net>
parents: 2191
diff changeset
276 elif isinstance(prop, hyperdb.Interval):
98d3bf8ffb19 store Intervals as two columns (and other fixes
Richard Jones <richard@users.sourceforge.net>
parents: 2191
diff changeset
277 inscols.append('_'+propname)
98d3bf8ffb19 store Intervals as two columns (and other fixes
Richard Jones <richard@users.sourceforge.net>
parents: 2191
diff changeset
278 inscols.append('__'+propname+'_int__')
4357
13b3155869e0 Beginnings of a big code cleanup / modernisation to make 2to3 happy
Richard Jones <richard@users.sourceforge.net>
parents: 4240
diff changeset
279 elif propname in old_has:
2217
98d3bf8ffb19 store Intervals as two columns (and other fixes
Richard Jones <richard@users.sourceforge.net>
parents: 2191
diff changeset
280 # we copy this col over from the old table
98d3bf8ffb19 store Intervals as two columns (and other fixes
Richard Jones <richard@users.sourceforge.net>
parents: 2191
diff changeset
281 inscols.append('_'+propname)
98d3bf8ffb19 store Intervals as two columns (and other fixes
Richard Jones <richard@users.sourceforge.net>
parents: 2191
diff changeset
282
2077
3e0961d6d44d Added the "actor" property.
Richard Jones <richard@users.sourceforge.net>
parents: 2075
diff changeset
283 # do the insert of the old data - the new columns will have
3e0961d6d44d Added the "actor" property.
Richard Jones <richard@users.sourceforge.net>
parents: 2075
diff changeset
284 # NULL values
2217
98d3bf8ffb19 store Intervals as two columns (and other fixes
Richard Jones <richard@users.sourceforge.net>
parents: 2191
diff changeset
285 args = ','.join([self.arg for x in inscols])
98d3bf8ffb19 store Intervals as two columns (and other fixes
Richard Jones <richard@users.sourceforge.net>
parents: 2191
diff changeset
286 cols = ','.join(inscols)
98d3bf8ffb19 store Intervals as two columns (and other fixes
Richard Jones <richard@users.sourceforge.net>
parents: 2191
diff changeset
287 sql = 'insert into _%s (%s) values (%s)'%(cn, cols, args)
2077
3e0961d6d44d Added the "actor" property.
Richard Jones <richard@users.sourceforge.net>
parents: 2075
diff changeset
288 for entry in olddata:
2217
98d3bf8ffb19 store Intervals as two columns (and other fixes
Richard Jones <richard@users.sourceforge.net>
parents: 2191
diff changeset
289 d = []
4774
3adff0fb0207 Fixed issue2550595: Allow migrating from roundup 0.x to 1.4
Thomas Arendsen Hein <thomas@intevation.de>
parents: 4421
diff changeset
290 retired_id = None
2217
98d3bf8ffb19 store Intervals as two columns (and other fixes
Richard Jones <richard@users.sourceforge.net>
parents: 2191
diff changeset
291 for name in inscols:
98d3bf8ffb19 store Intervals as two columns (and other fixes
Richard Jones <richard@users.sourceforge.net>
parents: 2191
diff changeset
292 # generate the new value for the Interval int column
98d3bf8ffb19 store Intervals as two columns (and other fixes
Richard Jones <richard@users.sourceforge.net>
parents: 2191
diff changeset
293 if name.endswith('_int__'):
98d3bf8ffb19 store Intervals as two columns (and other fixes
Richard Jones <richard@users.sourceforge.net>
parents: 2191
diff changeset
294 name = name[2:-6]
3728
b476fef16ccc fixed support for pysqlite2 (version 2.1.0 is the minimum version supported)
Richard Jones <richard@users.sourceforge.net>
parents: 3718
diff changeset
295 if sqlite_version in (2,3):
3718
0d561b24ceff support sqlite3
Richard Jones <richard@users.sourceforge.net>
parents: 3693
diff changeset
296 try:
0d561b24ceff support sqlite3
Richard Jones <richard@users.sourceforge.net>
parents: 3693
diff changeset
297 v = hyperdb.Interval(entry[name]).as_seconds()
0d561b24ceff support sqlite3
Richard Jones <richard@users.sourceforge.net>
parents: 3693
diff changeset
298 except IndexError:
0d561b24ceff support sqlite3
Richard Jones <richard@users.sourceforge.net>
parents: 3693
diff changeset
299 v = None
4357
13b3155869e0 Beginnings of a big code cleanup / modernisation to make 2to3 happy
Richard Jones <richard@users.sourceforge.net>
parents: 4240
diff changeset
300 elif name in entry:
2217
98d3bf8ffb19 store Intervals as two columns (and other fixes
Richard Jones <richard@users.sourceforge.net>
parents: 2191
diff changeset
301 v = hyperdb.Interval(entry[name]).as_seconds()
98d3bf8ffb19 store Intervals as two columns (and other fixes
Richard Jones <richard@users.sourceforge.net>
parents: 2191
diff changeset
302 else:
98d3bf8ffb19 store Intervals as two columns (and other fixes
Richard Jones <richard@users.sourceforge.net>
parents: 2191
diff changeset
303 v = None
3728
b476fef16ccc fixed support for pysqlite2 (version 2.1.0 is the minimum version supported)
Richard Jones <richard@users.sourceforge.net>
parents: 3718
diff changeset
304 elif sqlite_version in (2,3):
3718
0d561b24ceff support sqlite3
Richard Jones <richard@users.sourceforge.net>
parents: 3693
diff changeset
305 try:
0d561b24ceff support sqlite3
Richard Jones <richard@users.sourceforge.net>
parents: 3693
diff changeset
306 v = entry[name]
0d561b24ceff support sqlite3
Richard Jones <richard@users.sourceforge.net>
parents: 3693
diff changeset
307 except IndexError:
0d561b24ceff support sqlite3
Richard Jones <richard@users.sourceforge.net>
parents: 3693
diff changeset
308 v = None
4357
13b3155869e0 Beginnings of a big code cleanup / modernisation to make 2to3 happy
Richard Jones <richard@users.sourceforge.net>
parents: 4240
diff changeset
309 elif (sqlite_version == 1 and name in entry):
2217
98d3bf8ffb19 store Intervals as two columns (and other fixes
Richard Jones <richard@users.sourceforge.net>
parents: 2191
diff changeset
310 v = entry[name]
98d3bf8ffb19 store Intervals as two columns (and other fixes
Richard Jones <richard@users.sourceforge.net>
parents: 2191
diff changeset
311 else:
98d3bf8ffb19 store Intervals as two columns (and other fixes
Richard Jones <richard@users.sourceforge.net>
parents: 2191
diff changeset
312 v = None
4774
3adff0fb0207 Fixed issue2550595: Allow migrating from roundup 0.x to 1.4
Thomas Arendsen Hein <thomas@intevation.de>
parents: 4421
diff changeset
313 if name == 'id':
3adff0fb0207 Fixed issue2550595: Allow migrating from roundup 0.x to 1.4
Thomas Arendsen Hein <thomas@intevation.de>
parents: 4421
diff changeset
314 retired_id = v
3adff0fb0207 Fixed issue2550595: Allow migrating from roundup 0.x to 1.4
Thomas Arendsen Hein <thomas@intevation.de>
parents: 4421
diff changeset
315 elif name == '__retired__' and retired_id and v not in ['0', 0]:
3adff0fb0207 Fixed issue2550595: Allow migrating from roundup 0.x to 1.4
Thomas Arendsen Hein <thomas@intevation.de>
parents: 4421
diff changeset
316 v = retired_id
2217
98d3bf8ffb19 store Intervals as two columns (and other fixes
Richard Jones <richard@users.sourceforge.net>
parents: 2191
diff changeset
317 d.append(v)
2514
091711fb2f8c Initial logging integration: replace all debug prints with logging calls...
Richard Jones <richard@users.sourceforge.net>
parents: 2374
diff changeset
318 self.sql(sql, tuple(d))
2077
3e0961d6d44d Added the "actor" property.
Richard Jones <richard@users.sourceforge.net>
parents: 2075
diff changeset
319
3e0961d6d44d Added the "actor" property.
Richard Jones <richard@users.sourceforge.net>
parents: 2075
diff changeset
320 return 1
3e0961d6d44d Added the "actor" property.
Richard Jones <richard@users.sourceforge.net>
parents: 2075
diff changeset
321
1911
f5c804379c85 fixed ZRoundup - mostly changes to classic template
Richard Jones <richard@users.sourceforge.net>
parents: 1906
diff changeset
322 def sql_close(self):
4076
59d02edfaa9c Uniformly use """...""" instead of '''...''' for comments.
Stefan Seefeld <stefan@seefeld.name>
parents: 3858
diff changeset
323 """ Squash any error caused by us already having closed the
1236
dd52bf10f934 Bug fixes.
Richard Jones <richard@users.sourceforge.net>
parents: 1195
diff changeset
324 connection.
4076
59d02edfaa9c Uniformly use """...""" instead of '''...''' for comments.
Stefan Seefeld <stefan@seefeld.name>
parents: 3858
diff changeset
325 """
1236
dd52bf10f934 Bug fixes.
Richard Jones <richard@users.sourceforge.net>
parents: 1195
diff changeset
326 try:
2374
31cb1014300c Switch to using sqlite's own locking mechanisms...
Richard Jones <richard@users.sourceforge.net>
parents: 2273
diff changeset
327 self.conn.close()
31cb1014300c Switch to using sqlite's own locking mechanisms...
Richard Jones <richard@users.sourceforge.net>
parents: 2273
diff changeset
328 except sqlite.ProgrammingError, value:
31cb1014300c Switch to using sqlite's own locking mechanisms...
Richard Jones <richard@users.sourceforge.net>
parents: 2273
diff changeset
329 if str(value) != 'close failed - Connection is closed.':
31cb1014300c Switch to using sqlite's own locking mechanisms...
Richard Jones <richard@users.sourceforge.net>
parents: 2273
diff changeset
330 raise
1236
dd52bf10f934 Bug fixes.
Richard Jones <richard@users.sourceforge.net>
parents: 1195
diff changeset
331
1911
f5c804379c85 fixed ZRoundup - mostly changes to classic template
Richard Jones <richard@users.sourceforge.net>
parents: 1906
diff changeset
332 def sql_rollback(self):
4076
59d02edfaa9c Uniformly use """...""" instead of '''...''' for comments.
Stefan Seefeld <stefan@seefeld.name>
parents: 3858
diff changeset
333 """ Squash any error caused by us having closed the connection (and
1236
dd52bf10f934 Bug fixes.
Richard Jones <richard@users.sourceforge.net>
parents: 1195
diff changeset
334 therefore not having anything to roll back)
4076
59d02edfaa9c Uniformly use """...""" instead of '''...''' for comments.
Stefan Seefeld <stefan@seefeld.name>
parents: 3858
diff changeset
335 """
1236
dd52bf10f934 Bug fixes.
Richard Jones <richard@users.sourceforge.net>
parents: 1195
diff changeset
336 try:
dd52bf10f934 Bug fixes.
Richard Jones <richard@users.sourceforge.net>
parents: 1195
diff changeset
337 self.conn.rollback()
dd52bf10f934 Bug fixes.
Richard Jones <richard@users.sourceforge.net>
parents: 1195
diff changeset
338 except sqlite.ProgrammingError, value:
dd52bf10f934 Bug fixes.
Richard Jones <richard@users.sourceforge.net>
parents: 1195
diff changeset
339 if str(value) != 'rollback failed - Connection is closed.':
dd52bf10f934 Bug fixes.
Richard Jones <richard@users.sourceforge.net>
parents: 1195
diff changeset
340 raise
dd52bf10f934 Bug fixes.
Richard Jones <richard@users.sourceforge.net>
parents: 1195
diff changeset
341
1165
14467c765167 sqlite backend!
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
342 def __repr__(self):
14467c765167 sqlite backend!
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
343 return '<roundlite 0x%x>'%id(self)
14467c765167 sqlite backend!
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
344
3693
a775afeeee8b Database interface fixes.
Ralf Schlatterbeck <schlatterbeck@users.sourceforge.net>
parents: 3654
diff changeset
345 def sql_commit(self, fail_ok=False):
4076
59d02edfaa9c Uniformly use """...""" instead of '''...''' for comments.
Stefan Seefeld <stefan@seefeld.name>
parents: 3858
diff changeset
346 """ Actually commit to the database.
1165
14467c765167 sqlite backend!
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
347
14467c765167 sqlite backend!
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
348 Ignore errors if there's nothing to commit.
4076
59d02edfaa9c Uniformly use """...""" instead of '''...''' for comments.
Stefan Seefeld <stefan@seefeld.name>
parents: 3858
diff changeset
349 """
1165
14467c765167 sqlite backend!
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
350 try:
14467c765167 sqlite backend!
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
351 self.conn.commit()
14467c765167 sqlite backend!
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
352 except sqlite.DatabaseError, error:
14467c765167 sqlite backend!
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
353 if str(error) != 'cannot commit - no transaction is active':
14467c765167 sqlite backend!
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
354 raise
2374
31cb1014300c Switch to using sqlite's own locking mechanisms...
Richard Jones <richard@users.sourceforge.net>
parents: 2273
diff changeset
355 # open a new cursor for subsequent work
31cb1014300c Switch to using sqlite's own locking mechanisms...
Richard Jones <richard@users.sourceforge.net>
parents: 2273
diff changeset
356 self.cursor = self.conn.cursor()
1165
14467c765167 sqlite backend!
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
357
1906
f255363e6d97 PostgreSQL backend lands.
Richard Jones <richard@users.sourceforge.net>
parents: 1836
diff changeset
358 def sql_index_exists(self, table_name, index_name):
2514
091711fb2f8c Initial logging integration: replace all debug prints with logging calls...
Richard Jones <richard@users.sourceforge.net>
parents: 2374
diff changeset
359 self.sql('pragma index_list(%s)'%table_name)
1906
f255363e6d97 PostgreSQL backend lands.
Richard Jones <richard@users.sourceforge.net>
parents: 1836
diff changeset
360 for entry in self.cursor.fetchall():
f255363e6d97 PostgreSQL backend lands.
Richard Jones <richard@users.sourceforge.net>
parents: 1836
diff changeset
361 if entry[1] == index_name:
f255363e6d97 PostgreSQL backend lands.
Richard Jones <richard@users.sourceforge.net>
parents: 1836
diff changeset
362 return 1
f255363e6d97 PostgreSQL backend lands.
Richard Jones <richard@users.sourceforge.net>
parents: 1836
diff changeset
363 return 0
f255363e6d97 PostgreSQL backend lands.
Richard Jones <richard@users.sourceforge.net>
parents: 1836
diff changeset
364
2098
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2094
diff changeset
365 # old-skool id generation
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2094
diff changeset
366 def newid(self, classname):
4076
59d02edfaa9c Uniformly use """...""" instead of '''...''' for comments.
Stefan Seefeld <stefan@seefeld.name>
parents: 3858
diff changeset
367 """ Generate a new id for the given class
59d02edfaa9c Uniformly use """...""" instead of '''...''' for comments.
Stefan Seefeld <stefan@seefeld.name>
parents: 3858
diff changeset
368 """
5143
9cebf686c552 issue2550727: db.newid is broken with sqlite.
John Rouillard <rouilj@ieee.org>
parents: 5096
diff changeset
369
9cebf686c552 issue2550727: db.newid is broken with sqlite.
John Rouillard <rouilj@ieee.org>
parents: 5096
diff changeset
370 # Prevent other processes from reading while we increment.
9cebf686c552 issue2550727: db.newid is broken with sqlite.
John Rouillard <rouilj@ieee.org>
parents: 5096
diff changeset
371 # Otherwise multiple processes can end up with the same
9cebf686c552 issue2550727: db.newid is broken with sqlite.
John Rouillard <rouilj@ieee.org>
parents: 5096
diff changeset
372 # new id and hilarity results.
9cebf686c552 issue2550727: db.newid is broken with sqlite.
John Rouillard <rouilj@ieee.org>
parents: 5096
diff changeset
373 #
9cebf686c552 issue2550727: db.newid is broken with sqlite.
John Rouillard <rouilj@ieee.org>
parents: 5096
diff changeset
374 # Defeat pysqlite's attempts to do locking by setting
9cebf686c552 issue2550727: db.newid is broken with sqlite.
John Rouillard <rouilj@ieee.org>
parents: 5096
diff changeset
375 # isolation_level to None. Pysqlite can commit
9cebf686c552 issue2550727: db.newid is broken with sqlite.
John Rouillard <rouilj@ieee.org>
parents: 5096
diff changeset
376 # on it's own even if we don't want it to end the transaction.
9cebf686c552 issue2550727: db.newid is broken with sqlite.
John Rouillard <rouilj@ieee.org>
parents: 5096
diff changeset
377 # If we rewrite to use another sqlite library like apsw we
9cebf686c552 issue2550727: db.newid is broken with sqlite.
John Rouillard <rouilj@ieee.org>
parents: 5096
diff changeset
378 # don't have to deal with this autocommit/autotransact foolishness.
9cebf686c552 issue2550727: db.newid is broken with sqlite.
John Rouillard <rouilj@ieee.org>
parents: 5096
diff changeset
379 self.conn.isolation_level = None;
9cebf686c552 issue2550727: db.newid is broken with sqlite.
John Rouillard <rouilj@ieee.org>
parents: 5096
diff changeset
380 # Manage the transaction locks manually.
9cebf686c552 issue2550727: db.newid is broken with sqlite.
John Rouillard <rouilj@ieee.org>
parents: 5096
diff changeset
381 self.sql("BEGIN IMMEDIATE");
9cebf686c552 issue2550727: db.newid is broken with sqlite.
John Rouillard <rouilj@ieee.org>
parents: 5096
diff changeset
382
2098
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2094
diff changeset
383 # get the next ID
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2094
diff changeset
384 sql = 'select num from ids where name=%s'%self.arg
2514
091711fb2f8c Initial logging integration: replace all debug prints with logging calls...
Richard Jones <richard@users.sourceforge.net>
parents: 2374
diff changeset
385 self.sql(sql, (classname, ))
2098
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2094
diff changeset
386 newid = int(self.cursor.fetchone()[0])
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2094
diff changeset
387
5143
9cebf686c552 issue2550727: db.newid is broken with sqlite.
John Rouillard <rouilj@ieee.org>
parents: 5096
diff changeset
388 # leave the next larger number as the next newid
9cebf686c552 issue2550727: db.newid is broken with sqlite.
John Rouillard <rouilj@ieee.org>
parents: 5096
diff changeset
389 sql = 'update ids set num=num+1 where name=%s'%self.arg
9cebf686c552 issue2550727: db.newid is broken with sqlite.
John Rouillard <rouilj@ieee.org>
parents: 5096
diff changeset
390 vals = (classname,)
2514
091711fb2f8c Initial logging integration: replace all debug prints with logging calls...
Richard Jones <richard@users.sourceforge.net>
parents: 2374
diff changeset
391 self.sql(sql, vals)
2098
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2094
diff changeset
392
5143
9cebf686c552 issue2550727: db.newid is broken with sqlite.
John Rouillard <rouilj@ieee.org>
parents: 5096
diff changeset
393 # reset pysqlite's auto transact stuff to default since the
9cebf686c552 issue2550727: db.newid is broken with sqlite.
John Rouillard <rouilj@ieee.org>
parents: 5096
diff changeset
394 # rest of the code expects it.
9cebf686c552 issue2550727: db.newid is broken with sqlite.
John Rouillard <rouilj@ieee.org>
parents: 5096
diff changeset
395 self.conn.isolation_level = '';
9cebf686c552 issue2550727: db.newid is broken with sqlite.
John Rouillard <rouilj@ieee.org>
parents: 5096
diff changeset
396 # commit writing the data, clearing locks for other processes
9cebf686c552 issue2550727: db.newid is broken with sqlite.
John Rouillard <rouilj@ieee.org>
parents: 5096
diff changeset
397 # and create a new cursor to the database.
9cebf686c552 issue2550727: db.newid is broken with sqlite.
John Rouillard <rouilj@ieee.org>
parents: 5096
diff changeset
398 self.sql_commit();
9cebf686c552 issue2550727: db.newid is broken with sqlite.
John Rouillard <rouilj@ieee.org>
parents: 5096
diff changeset
399
2098
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2094
diff changeset
400 # return as string
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2094
diff changeset
401 return str(newid)
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2094
diff changeset
402
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2094
diff changeset
403 def setid(self, classname, setid):
4076
59d02edfaa9c Uniformly use """...""" instead of '''...''' for comments.
Stefan Seefeld <stefan@seefeld.name>
parents: 3858
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404 """ Set the id counter: used during import of database
2098
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2094
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405
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Richard Jones <richard@users.sourceforge.net>
parents: 3163
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406 We add one to make it behave like the sequences in postgres.
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59d02edfaa9c Uniformly use """...""" instead of '''...''' for comments.
Stefan Seefeld <stefan@seefeld.name>
parents: 3858
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407 """
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18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2094
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408 sql = 'update ids set num=%s where name=%s'%(self.arg, self.arg)
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2094
diff changeset
409 vals = (int(setid)+1, classname)
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091711fb2f8c Initial logging integration: replace all debug prints with logging calls...
Richard Jones <richard@users.sourceforge.net>
parents: 2374
diff changeset
410 self.sql(sql, vals)
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18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2094
diff changeset
411
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Richard Jones <richard@users.sourceforge.net>
parents: 3163
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412 def clear(self):
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Richard Jones <richard@users.sourceforge.net>
parents: 3306
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413 rdbms_common.Database.clear(self)
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Richard Jones <richard@users.sourceforge.net>
parents: 3163
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414 # set the id counters to 0 (setid adds one) so we start at 1
ae1093684ef5 merge from maint-0-7
Richard Jones <richard@users.sourceforge.net>
parents: 3163
diff changeset
415 for cn in self.classes.keys():
ae1093684ef5 merge from maint-0-7
Richard Jones <richard@users.sourceforge.net>
parents: 3163
diff changeset
416 self.setid(cn, 0)
ae1093684ef5 merge from maint-0-7
Richard Jones <richard@users.sourceforge.net>
parents: 3163
diff changeset
417
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Richard Jones <richard@users.sourceforge.net>
parents: 2094
diff changeset
418 def create_class(self, spec):
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2094
diff changeset
419 rdbms_common.Database.create_class(self, spec)
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Richard Jones <richard@users.sourceforge.net>
parents: 3693
diff changeset
420 sql = 'insert into ids (name, num) values (%s, %s)'%(self.arg, self.arg)
2098
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2094
diff changeset
421 vals = (spec.classname, 1)
2514
091711fb2f8c Initial logging integration: replace all debug prints with logging calls...
Richard Jones <richard@users.sourceforge.net>
parents: 2374
diff changeset
422 self.sql(sql, vals)
2098
18addf2a8596 Implemented proper datatypes in mysql and postgresql backends...
Richard Jones <richard@users.sourceforge.net>
parents: 2094
diff changeset
423
3728
b476fef16ccc fixed support for pysqlite2 (version 2.1.0 is the minimum version supported)
Richard Jones <richard@users.sourceforge.net>
parents: 3718
diff changeset
424 if sqlite_version in (2,3):
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Richard Jones <richard@users.sourceforge.net>
parents: 3693
diff changeset
425 def load_journal(self, classname, cols, nodeid):
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Stefan Seefeld <stefan@seefeld.name>
parents: 3858
diff changeset
426 """We need to turn the sqlite3.Row into a tuple so it can be
59d02edfaa9c Uniformly use """...""" instead of '''...''' for comments.
Stefan Seefeld <stefan@seefeld.name>
parents: 3858
diff changeset
427 unpacked"""
3718
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Richard Jones <richard@users.sourceforge.net>
parents: 3693
diff changeset
428 l = rdbms_common.Database.load_journal(self,
0d561b24ceff support sqlite3
Richard Jones <richard@users.sourceforge.net>
parents: 3693
diff changeset
429 classname, cols, nodeid)
0d561b24ceff support sqlite3
Richard Jones <richard@users.sourceforge.net>
parents: 3693
diff changeset
430 cols = range(5)
0d561b24ceff support sqlite3
Richard Jones <richard@users.sourceforge.net>
parents: 3693
diff changeset
431 return [[row[col] for col in cols] for row in l]
0d561b24ceff support sqlite3
Richard Jones <richard@users.sourceforge.net>
parents: 3693
diff changeset
432
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f5c804379c85 fixed ZRoundup - mostly changes to classic template
Richard Jones <richard@users.sourceforge.net>
parents: 1906
diff changeset
433 class sqliteClass:
f5c804379c85 fixed ZRoundup - mostly changes to classic template
Richard Jones <richard@users.sourceforge.net>
parents: 1906
diff changeset
434 def filter(self, search_matches, filterspec, sort=(None,None),
f5c804379c85 fixed ZRoundup - mostly changes to classic template
Richard Jones <richard@users.sourceforge.net>
parents: 1906
diff changeset
435 group=(None,None)):
4076
59d02edfaa9c Uniformly use """...""" instead of '''...''' for comments.
Stefan Seefeld <stefan@seefeld.name>
parents: 3858
diff changeset
436 """ If there's NO matches to a fetch, sqlite returns NULL
1911
f5c804379c85 fixed ZRoundup - mostly changes to classic template
Richard Jones <richard@users.sourceforge.net>
parents: 1906
diff changeset
437 instead of nothing
4076
59d02edfaa9c Uniformly use """...""" instead of '''...''' for comments.
Stefan Seefeld <stefan@seefeld.name>
parents: 3858
diff changeset
438 """
4357
13b3155869e0 Beginnings of a big code cleanup / modernisation to make 2to3 happy
Richard Jones <richard@users.sourceforge.net>
parents: 4240
diff changeset
439 return [f for f in rdbms_common.Class.filter(self, search_matches,
13b3155869e0 Beginnings of a big code cleanup / modernisation to make 2to3 happy
Richard Jones <richard@users.sourceforge.net>
parents: 4240
diff changeset
440 filterspec, sort=sort, group=group) if f]
1165
14467c765167 sqlite backend!
Richard Jones <richard@users.sourceforge.net>
parents:
diff changeset
441
1911
f5c804379c85 fixed ZRoundup - mostly changes to classic template
Richard Jones <richard@users.sourceforge.net>
parents: 1906
diff changeset
442 class Class(sqliteClass, rdbms_common.Class):
f5c804379c85 fixed ZRoundup - mostly changes to classic template
Richard Jones <richard@users.sourceforge.net>
parents: 1906
diff changeset
443 pass
1168
94620e088e3a fixes to the rdbms backends
Richard Jones <richard@users.sourceforge.net>
parents: 1165
diff changeset
444
1911
f5c804379c85 fixed ZRoundup - mostly changes to classic template
Richard Jones <richard@users.sourceforge.net>
parents: 1906
diff changeset
445 class IssueClass(sqliteClass, rdbms_common.IssueClass):
f5c804379c85 fixed ZRoundup - mostly changes to classic template
Richard Jones <richard@users.sourceforge.net>
parents: 1906
diff changeset
446 pass
1168
94620e088e3a fixes to the rdbms backends
Richard Jones <richard@users.sourceforge.net>
parents: 1165
diff changeset
447
1911
f5c804379c85 fixed ZRoundup - mostly changes to classic template
Richard Jones <richard@users.sourceforge.net>
parents: 1906
diff changeset
448 class FileClass(sqliteClass, rdbms_common.FileClass):
f5c804379c85 fixed ZRoundup - mostly changes to classic template
Richard Jones <richard@users.sourceforge.net>
parents: 1906
diff changeset
449 pass
1168
94620e088e3a fixes to the rdbms backends
Richard Jones <richard@users.sourceforge.net>
parents: 1165
diff changeset
450
2645
8250c63c3963 remove space at EOL, add vim modeline
Alexander Smishlajev <a1s@users.sourceforge.net>
parents: 2633
diff changeset
451 # vim: set et sts=4 sw=4 :
Roundup Issue Tracker: http://roundup-tracker.org/