← Back to branch summary

~ntt-pf-lab/nova/monkey_patch_notification

« back to all changes in this revision

Viewing changes to vendor/Twisted-10.0.0/twisted/persisted/journal/picklelog.py

  • Committer: Jesse Andrews
  • Date: 2010-05-28 06:05:26 UTC
  • Revision ID: git-v1:bf6e6e718cdc7488e2da87b21e258ccc065fe499
initial commit

Show diffs side-by-side

added added

removed removed

Lines of Context:
vendor/Twisted-10.0.0/twisted/persisted/journal/picklelog.py
 
1
# Copyright (c) 2001-2004 Twisted Matrix Laboratories.
 
2
# See LICENSE for details.
 
3
 
 
4
# 
 
5
# -*- test-case-name: twisted.test.test_journal -*-
 
6
 
 
7
"""Logging that uses pickles.
 
8
 
 
9
TODO: add log that logs to a file.
 
10
"""
 
11
 
 
12
# twisted imports
 
13
from twisted.persisted import dirdbm
 
14
from twisted.internet import defer
 
15
from zope.interface import implements
 
16
 
 
17
# sibling imports
 
18
import base
 
19
 
 
20
 
 
21
class DirDBMLog:
 
22
    """Log pickles to DirDBM directory."""
 
23
 
 
24
    implements(base.ICommandLog)
 
25
 
 
26
    def __init__(self, logPath):
 
27
        self.db = dirdbm.Shelf(logPath)
 
28
        indexs = map(int, self.db.keys())
 
29
        if indexs:
 
30
            self.currentIndex = max(indexs)
 
31
        else:
 
32
            self.currentIndex = 0
 
33
            
 
34
    def logCommand(self, command, time):
 
35
        """Log a command."""
 
36
        self.currentIndex += 1
 
37
        self.db[str(self.currentIndex)] = (time, command)
 
38
        return defer.succeed(1)
 
39
    
 
40
    def getCurrentIndex(self):
 
41
        """Return index of last command logged."""
 
42
        return self.currentIndex
 
43
    
 
44
    def getCommandsSince(self, index):
 
45
        result = []
 
46
        for i in range(index, self.currentIndex + 1):
 
47
            result.append(self.db[str(i)])
 
48
        return result