SP/web2py/scripts/cpdb.py

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Python
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2018-10-25 15:33:07 +00:00
import os
import sys
from collections import deque
import argparse
import cStringIO
import operator
import cPickle as pickle
from collections import deque
import math
import re
import cmd
try:
import pyreadline as readline
except ImportError:
import readline
try:
from gluon import DAL
from gluon.fileutils import open_file
except ImportError as err:
print('gluon path not found')
class refTable(object):
def __init__(self):
self.columns = None
self.rows = None
def getcolHeader(self, colHeader):
return ' | '.join('**%s**' % item for item in colHeader)
def wrapTable(
self, rows, hasHeader=False, headerChar='-', delim=' | ', justify='left',
separateRows=False, prefix='', postfix='', wrapfunc=lambda x: x):
def rowWrapper(row):
'''---
newRows is returned like
[['w'], ['x'], ['y'], ['z']]
---'''
newRows = [wrapfunc(item).split('\n') for item in row]
self.rows = newRows
'''---
rowList gives like newRows but
formatted like [[w, x, y, z]]
---'''
rowList = [[substr or '' for substr in item]
for item in map(None, *newRows)]
return rowList
logicalRows = [rowWrapper(row) for row in rows]
columns = map(None, *reduce(operator.add, logicalRows))
self.columns = columns
maxWidths = [max(
[len(str
(item)) for
item in column]
) for column
in columns]
rowSeparator = headerChar * (len(prefix) +len(postfix) + sum(maxWidths) +
len(delim) * (len(maxWidths) - 1))
justify = {'center': str.center,
'right': str.rjust,
'left': str.ljust
}[justify.lower()]
output = cStringIO.StringIO()
if separateRows:
print >> output, rowSeparator
for physicalRows in logicalRows:
for row in physicalRows:
print >> output,\
prefix + delim.join([
justify(str(item), width) for (
item, width) in zip(row, maxWidths)]
) + postfix
if separateRows or hasHeader:
print >> output, rowSeparator
hasHeader = False
return output.getvalue()
def wrap_onspace(self, text, width):
return reduce(lambda line, word, width=width: '%s%s%s' % (
line,
' ' if len(line.rsplit('\n')[-1]+word.split('\n')[0])>=width else '\n',
word), text.split(' '))
def wrap_onspace_strict(self, text, width):
wordRegex = re.compile(r'\S{' + str(width) + r',}')
return self.wrap_onspace(
wordRegex.sub(
lambda m: self.
wrap_always(
m.group(), width), text
), width)
def wrap_always(self, text, width):
return '\n'.join(
[text[width * i:width * (i + 1
)] for i in xrange(
int(math.ceil(1. * len(
text) / width)))])
class tableHelper():
def __init__(self):
self.oTable = refTable()
def getAsRows(self, data):
return [row.strip().split(',') for row in data.splitlines()]
def getTable_noWrap(self, data, header=None):
rows = self.getAsRows(data)
if header is not None:
hRows = [header] + rows
else:
hRows = rows
table = self.oTable.wrapTable(hRows, hasHeader=True)
return table
def getTable_Wrap(self, data, wrapStyle, header=None, width=65):
wrapper = None
if len(wrapStyle) > 1:
rows = self.getAsRows(data)
if header is not None:
hRows = [header] + rows
else:
hRows = rows
for wrapper in (self.oTable.wrap_always,
self.oTable.wrap_onspace,
self.oTable.wrap_onspace_strict):
return self.oTable.wrapTable(hRows, hasHeader=True, separateRows=True, prefix='| ', postfix=' |', wrapfunc=lambda x:
wrapper(x, width))
else:
return self.getTable_noWrap(data, header)
def getAsErrorTable(self, err):
return self.getTable_Wrap(err, None)
class console:
def __init__(self, prompt, banner=None):
self.prompt = prompt
self.banner = banner
self.commands = {}
self.commandSort = []
self.db = None
for i in dir(self):
if "cmd_" == i[:4]:
cmd = i.split("cmd_")[1].lower()
self.commands[cmd] = getattr(self, i)
try:
self.commandSort.append((int(self
.commands[cmd].__doc__.split(
"|")[0]), cmd))
except:
pass
self.commandSort.sort()
self.commandSort = [i[1] for i in self.commandSort]
self.var_DEBUG = False
self.var_tableStyle = ''
self.configvars = {}
for i in dir(self):
if "var_" == i[:4]:
var = i.split("var_")[1]
self.configvars[var] = i
def setBanner(self, banner):
self.banner = banner
def execCmd(self, db):
self.db = db
print self.banner
while True:
try:
command = raw_input(self.prompt)
try:
self.execCommand(command)
except:
self.execute(command)
except KeyboardInterrupt:
break
except EOFError:
break
except Exception, a:
self.printError(a)
print ("\r\n\r\nBye!...")
sys.exit(0)
def printError(self, err):
sys.stderr.write("Error: %s\r\n" % err)
if self.var_DEBUG:
pass
def execute(self, cmd):
try:
if not '-table ' in cmd:
exec cmd
else:
file = None
table = None
fields = []
items = cmd.split()
invalidParams = []
table = self.getTable(items[1])
allowedParams = ['fields', 'file']
for i in items:
if '=' in i and not i.split('=')[0] in allowedParams:
try:
invalidParams.append(i)
except Exception, err:
raise Exception('invalid parameter\n%s' % i)
else:
if 'file=' in i:
file = os.path.abspath(i.split('=')[0].strip())
if 'fields=' in i:
for field in i.split('=')[1].split():
if field in self.db[table].fields:
fields.append(field.strip())
if len(invalidParams) > 0:
print('the following parameter(s) is not valid\n%s' %
','.join(invalidParams))
else:
try:
self.cmd_table(table, file, fields)
except Exception, err:
print('could not generate table for table %s\n%s' % (table, err))
except Exception, err:
print('sorry, can not do that!\n%s' % err)
def getTable(self, tbl):
for mTbl in db.tables:
if tbl in mTbl:
if mTbl.startswith(tbl):
return mTbl
def execCommand(self, cmd):
words = cmd.split(" ")
words = [i for i in words if i]
if not words:
return
cmd, parameters = words[0].lower(), words[1:]
if not cmd in self.commands:
raise Exception(
"Command %s not found. Try 'help'\r\n" % cmd)
self.commands[cmd](*parameters)
'''---
DEFAULT COMMANDS (begins with cmd_)
---'''
def cmd_clear(self, numlines=100):
"""-5|clear|clear the screen"""
if os.name == "posix":
'''---
Unix/Linux/MacOS/BSD/etc
---'''
os.system('clear')
elif os.name in ("nt", "dos", "ce"):
'''---
Windows
---'''
os.system('CLS')
else:
'''---
Fallback for other operating systems.
---'''
print '\n' * numlines
def cmd_table(self, tbl, file=None, fields=[]):
"""-4|-table [TABLENAME] optional[file=None] [fields=None]|\
the default tableStyle is no_wrap - use the 'set x y' command to change the style\n\
style choices:
\twrap_always
\twrap_onspace
\twrap_onspace_strict
\tno_wrap (value '')\n
\t the 2nd optional param is a path to a file where the table will be written
\t the 3rd optional param is a list of fields you want displayed\n"""
table = None
for mTbl in db.tables:
if tbl in mTbl:
if mTbl.startswith(tbl):
table = mTbl
break
oTable = tableHelper()
'''---
tablestyle:
wrap_always
wrap_onspace
wrap_onspace_strict
or set set to "" for no wrapping
---'''
tableStyle = self.var_tableStyle
filedNotFound = []
table_fields = None
if len(fields) == 0:
table_fields = self.db[table].fields
else:
table_fields = fields
for field in fields:
if not field in self.db[table].fields:
filedNotFound.append(field)
if len(filedNotFound) == 0:
rows = self.db(self.db[table].id > 0).select()
rows_data = []
for row in rows:
rowdata = []
for f in table_fields:
rowdata.append(str(row[f]))
rows_data.append(','.join(rowdata))
data = '\n'.join(rows_data)
dataTable = oTable.getTable_Wrap(data, tableStyle, table_fields)
print('TABLE %s\n%s' % (table, dataTable))
if file is not None:
try:
tail, head = os.path.split(file)
try:
os.makedirs(tail)
except:
'do nothing, folders exist'
oFile = open(file, 'w')
oFile.write('TABLE: %s\n%s' % (table, dataTable))
oFile.close()
print('%s has been created and populated with all available data from table %2\n' % (file, table))
except Exception, err:
print("EXCEPTION: could not create table %s\n%s" % (table, err))
else:
print('the following fields are not valid [%s]' % (','.join(filedNotFound)))
def cmd_help(self, *args):
'''-3|help|Show's help'''
alldata = []
lengths = []
for i in self.commandSort:
alldata.append(
self.commands[i].__doc__.split("|")[1:])
for i in alldata:
if len(i) > len(lengths):
for j in range(len(i)
- len(lengths)):
lengths.append(0)
j = 0
while j < len(i):
if len(i[j]) > lengths[j]:
lengths[j] = len(i[j])
j += 1
print ("-" * (lengths[0] + lengths[1] + 4))
for i in alldata:
print (("%-" + str(lengths[0]) + "s - %-" + str(
lengths[1]) + "s") % (i[0], i[1]))
if len(i) > 2:
for j in i[2:]: print (("%" + str(lengths[
0] + 9) + "s* %s") % (" ", j))
print
def cmd_vars(self, *args):
'''-2|vars|Show variables'''
print ("variables\r\n" + "-" * 79)
for i, j in self.configvars.items():
value = self.parfmt(repr(getattr(self, j)), 52)
print ("| %20s | %52s |" % (i, value[0]))
for k in value[1:]: print ("| %20s | %52s |" % ("", k))
if len(value) > 1:
print("| %20s | %52s |" % ("", ""))
print ("-" * 79)
def parfmt(self, txt, width):
res = []
pos = 0
while True:
a = txt[pos:pos + width]
if not a:
break
res.append(a)
pos += width
return res
def cmd_set(self, *args):
'''-1|set [variable_name] [value]|Set configuration variable value|Values are an expressions (100 | string.lower('ABC') | etc.'''
value = " ".join(args[1:])
if args[0] not in self.configvars:
setattr(self, "var_{0}" % (args[0]), eval(value))
setattr(self, "var_{0}" % (args[0]), eval(value))
def cmd_clearscreen(self, numlines=50):
'''---Clear the console.
---'''
if os.name == "posix":
'''---
Unix/Linux/MacOS/BSD/etc
---'''
os.system('clear')
elif os.name in ("nt", "dos", "ce"):
'''---
Windows
---'''
os.system('CLS')
else:
'''---
Fallback for other operating systems.
---'''
print '\n' * numlines
class dalShell(console):
def __init__(self):
pass
def shell(self, db):
console.__init__(self, prompt=">>> ", banner='dal interactive shell')
self.execCmd(db)
class setCopyDB():
def __init__(self):
'''---
non source or target specific vars
---'''
self.strModel = None
self.dalPath = None
self.db = None
'''---
source vars
---'''
self.sourceModel = None
self.sourceFolder = None
self.sourceConnectionString = None
self.sourcedbType = None
self.sourcedbName = None
'''---
target vars
---'''
self.targetdbType = None
self.targetdbName = None
self.targetModel = None
self.targetFolder = None
self.targetConnectionString = None
self.truncate = False
def _getDal(self):
mDal = None
if self.dalPath is not None:
global DAL
sys.path.append(self.dalPath)
mDal = __import__(
'dal', globals={}, locals={}, fromlist=['DAL'], level=0)
DAL = mDal.DAL
return mDal
def instDB(self, storageFolder, storageConnectionString, autoImport):
self.db = DAL(storageConnectionString, folder=os.path.abspath(
storageFolder), auto_import=autoImport)
return self.db
def delete_DB_tables(self, storageFolder, storageType):
print 'delete_DB_tablesn\n\t%s\n\t%s' % (storageFolder, storageType)
dataFiles = [storageType, "sql.log"]
try:
for f in os.listdir(storageFolder):
if ".table" in f:
fTable = "%s/%s" % (storageFolder, f)
os.remove(fTable)
print('deleted %s' % (fTable))
for dFile in dataFiles:
os.remove("%s/%s" % (storageFolder, dFile))
print('deleted %s' % (
"%s/%s" % (storageFolder, dFile)))
except Exception, errObj:
print(str(errObj))
def truncatetables(self, tables=[]):
if len(tables) != 0:
try:
print 'table value: %s' % (tables)
for tbl in self.db.tables:
for mTbl in tables:
if mTbl.startswith(tbl):
self.db[mTbl].truncate()
except Exception, err:
print('EXCEPTION: %s' % (err))
else:
try:
for tbl in self.db.tables:
self.db[tbl].truncate()
except Exception, err:
print('EXCEPTION: %s' % (err))
def copyDB(self):
other_db = DAL("%s://%s" % (
self.targetdbType, self.targetdbName), folder=self.targetFolder)
print 'creating tables...'
for table in self.db:
other_db.define_table(
table._tablename, *[field for field in table])
'''
should there be an option to truncAte target DB?
if yes, then change args to allow for choice
and set self.trancate to the art value
if self.truncate==True:
other_db[table._tablename].truncate()
'''
print 'exporting data...'
self.db.export_to_csv_file(open('tmp.sql', 'wb'))
print 'importing data...'
other_db.import_from_csv_file(open_file('tmp.sql', 'rb'))
other_db.commit()
print 'done!'
print 'Attention: do not run this program again or you end up with duplicate records'
def createfolderPath(self, folder):
try:
if folder is not None:
os.makedirs(folder)
except Exception, err:
pass
if __name__ == '__main__':
oCopy = setCopyDB()
db = None
targetDB = None
dbfolder = None
clean = False
model = None
truncate = False
parser = argparse.ArgumentParser(description='\
samplecmd line:\n\
-f ./blueLite/db_storage -i -y sqlite://storage.sqlite -Y sqlite://storage2.sqlite -d ./blueLite/pyUtils/sql/blueSQL -t True',
epilog='')
reqGroup = parser.add_argument_group('Required arguments')
reqGroup.add_argument('-f', '--sourceFolder', required=True, help="path to the 'source' folder of the 'source' DB")
reqGroup.add_argument('-F', '--targetFolder', required=False, help="path to the 'target' folder of the 'target' DB")
reqGroup.add_argument('-y', '--sourceConnectionString', required=True, help="source db connection string ()\n\
------------------------------------------------\n\
\
sqlite://storage.db\n\
mysql://username:password@localhost/test\n\
postgres://username:password@localhost/test\n\
mssql://username:password@localhost/test\n\
firebird://username:password@localhost/test\n\
oracle://username/password@test\n\
db2://username:password@test\n\
ingres://username:password@localhost/test\n\
informix://username:password@test\n\
\
------------------------------------------------")
reqGroup.add_argument('-Y', '--targetConnectionString', required=True,
help="target db type (sqlite,mySql,etc.)")
autoImpGroup = parser.add_argument_group('optional args (auto_import)')
autoImpGroup.add_argument('-a', '--autoimport', required=False, help='set to True to bypass loading of the model')
"""
*** removing -m/-M options for now --> i need a
better regex to match db.define('bla')...with optional db.commit()
modelGroup=parser.add_argument_group('optional args (create model)')
modelGroup.add_argument('-m','--sourcemodel'\
,required=False\
,help='to create a model from an existing model, point to the source model')
modelGroup.add_argument('-M','--targetmodel'\
,required=False\
,help='to create a model from an existing model, point to the target model')
"""
miscGroup = parser.add_argument_group('optional args/tasks')
miscGroup.add_argument('-i', '--interactive', required=False, action='store_true', help='run in interactive mode')
miscGroup.add_argument(
'-d', '--dal', required=False, help='path to dal.py')
miscGroup.add_argument('-t', '--truncate', choices=['True', 'False'], help='delete the records but *not* the table of the SOURCE DB')
miscGroup.add_argument('-b', '--tables', required=False, type=list, help='optional list (comma delimited) of SOURCE tables to truncate, defaults to all')
miscGroup.add_argument('-c', '--clean', required=False, help='delete the DB,tables and the log file, WARNING: this is unrecoverable')
args = parser.parse_args()
db = None
mDal = None
try:
oCopy.sourceFolder = args.sourceFolder
oCopy.targetFolder = args.sourceFolder
sourceItems = args.sourceConnectionString.split('://',1)
oCopy.sourcedbType = sourceItems[0]
oCopy.sourcedbName = sourceItems[1]
targetItems = args.targetConnectionString.split('://',1)
oCopy.targetdbType = targetItems[0]
oCopy.targetdbName = targetItems[1]
except Exception, err:
print('EXCEPTION: %s' % (err))
if args.dal:
try:
autoImport = True
if args.autoimport:
autoImport = args.autoimport
#sif not DAL in globals:
#if not sys.path.__contains__():
oCopy.dalPath = args.dal
mDal = oCopy._getDal()
db = oCopy.instDB(args.sourceFolder, args.sourceConnectionString,
autoImport)
except Exception, err:
print('EXCEPTION: could not set DAL\n%s' % (err))
if args.truncate:
try:
if args.truncate:
if args.tables:
tables = args.tables.strip().split(',')
else:
oCopy.truncatetables([])
except Exception, err:
print('EXCEPTION: could not truncate tables\n%s' % (err))
try:
if args.clean:
oCopy.delete_DB_tables(oCopy.targetFolder, oCopy.targetType)
except Exception, err:
print('EXCEPTION: could not clean db\n%s' % (err))
"""
*** goes with -m/-M options... removed for now
if args.sourcemodel:
try:
oCopy.sourceModel=args.sourcemodel
oCopy.targetModel=args.sourcemodel
oCopy.createModel()
except Exception, err:
print('EXCEPTION: could not create model\n\
source model: %s\n\
target model: %s\n\
{2}' % (args.sourcemodel,args.targetmodel,err))
"""
if args.sourceFolder:
try:
oCopy.sourceFolder = os.path.abspath(args.sourceFolder)
oCopy.createfolderPath(oCopy.sourceFolder)
except Exception, err:
print('EXCEPTION: could not create folder path\n%s' % (err))
else:
oCopy.dbStorageFolder = os.path.abspath(os.getcwd())
if args.targetFolder:
try:
oCopy.targetFolder = os.path.abspath(args.targetFolder)
oCopy.createfolderPath(oCopy.targetFolder)
except Exception, err:
print('EXCEPTION: could not create folder path\n%s' % (err))
if not args.interactive:
try:
oCopy.copyDB()
except Exception, err:
print('EXCEPTION: could not make a copy of the database\n%s' % (err))
else:
s = dalShell()
s.shell(db)