ige.MsgMngr.MsgMngr.__init__() - Code Metrics - Inspection of "Merge pull request #189 from dahaic/upgrade_cleanu..." - ospaceteam/outerspace - Measure and Improve Code Quality continuously with Scrutinizer

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Push — master ( bb27bc...b66f54 )

by Marek

created 2018-06-18 20:39 UTC

ige.MsgMngr.MsgMngr.init() A

↳ Parent: ige.MsgMngr

Complexity

Conditions

Size

Total Lines	4
Code Lines	3

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
cc	1
eloc	3
nop	2
dl	0
loc	4
rs	10
c	0
b	0
f	0

#
#  Copyright 2001 - 2016 Ludek Smid [http://www.ospace.net/]
#
#  This file is part of Outer Space.
#
#  Outer Space is free software; you can redistribute it and/or modify
#  it under the terms of the GNU General Public License as published by
#  the Free Software Foundation; either version 2 of the License, or
#  (at your option) any later version.
#
#  Outer Space is distributed in the hope that it will be useful,
#  but WITHOUT ANY WARRANTY; without even the implied warranty of
#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#  GNU General Public License for more details.
#
#  You should have received a copy of the GNU General Public License
#  along with Outer Space; if not, write to the Free Software
#  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
#

import time, log, ige

class MsgMngrException(Exception):
    pass

class MsgMngr:

    MAILBOXROOT_ID = "#MAILBOXROOT#"

    def __init__(self, database):
        # init object space root
        self.database = database
        self.deleted = 0

    def shutdown(self):
        log.message('Shutdown')
        self.database.shutdown()

    def checkpoint(self):
        self.database.checkpoint()

    def clear(self):
        self.database.clear()

    def backup(self, basename):
        self.database.backup(basename)

    def upgrade(self):
        return

    def getMailboxRoot(self):
        mailboxRoot = self.database.get(self.MAILBOXROOT_ID, None)
        if not mailboxRoot:
            mailboxRoot = MailboxRoot()
            mailboxRoot.scan(self.database)
            self.database.create(mailboxRoot, id = self.MAILBOXROOT_ID)
        return mailboxRoot

    def getMailbox(self, gameID, oid, recreate = True):
        name = "%s-%s" % (gameID, oid)
        try:
            mailbox = self.database.get(name, None)
        except:
            log.warning("Cannot read the mailbox", name)
            # force recreation
            mailbox = None
        if mailbox:
            #if hasattr(mailbox, "setDatabase"):
            mailbox.setDatabase(self.database)
            return mailbox
        if not recreate:
            raise MsgMngrException("No such mailbox")
        # create mailbox
        log.message("Creating mailbox", name)
        mailbox = Mailbox(name)
        self.database.create(mailbox, id = name)
        mailbox.setDatabase(self.database)
        self.getMailboxRoot().addMailbox(name)
        return mailbox

    # send message
    def send(self, gameID, oid, messageDict):
        self.getMailbox(gameID, oid).add(messageDict)
        return 1

    # get messages from mailbox
    def get(self, gameID, oid, lastID):
        response = self.getMailbox(gameID, oid).get(lastID)
        return response

    # delete messages from mailbox
    def delete(self, gameID, oid, msgIDs):
        self.getMailbox(gameID, oid).delete(msgIDs)
        return 1

    # delete old messages from mailbox
    def deleteOld(self, gameID, oid, forum, maxAge):
        #@log.debug("Compresing mailbox", gameID, oid, forum)
        self.deleted += self.getMailbox(gameID, oid).deleteOld(forum, maxAge)
        if self.deleted >= 200:
            self.database.checkpoint()
            self.deleted = 0
        #@log.debug("Compression finished", gameID, oid, forum)
        return 1

    # delete unused mailboxes
    def trashUnusedMailboxes(self, mailboxes):
        trash = self.getMailboxes()
        #@log.debug("Mailboxes:", trash)
        #@log.debug("Used:", mailboxes)
        for mailbox in mailboxes:
            if mailbox in trash:
                trash.remove(mailbox)
        for gameID, oid in trash:
            log.message("Removing mailbox", gameID, oid)
            box = self.getMailbox(gameID, oid)
            box.deleteAll()
            del self.database[box.name]
            self.getMailboxRoot().removeMailbox(box.name)

    def getMailboxes(self):
        mailboxes = self.getMailboxRoot().getAll()
        result = []
        for mailbox in mailboxes:
            gameID, oid = mailbox.split("-")
            result.append((gameID, int(oid)))
        return result

class MailboxRoot:

    def __init__(self):
        self.mailboxNames = []

    def scan(self, db):
        log.debug("*** SCANNING MAILBOXES ***")
        self.mailboxNames = []
        for key in db.keys():
            if key.count("-") == 1:
                # mailbox
                self.mailboxNames.append(key)
            else:
                #skip ordinal mails and mailboxroot
                continue

    def addMailbox(self, name):
        if name not in self.mailboxNames:
            self.mailboxNames.append(name)

    def removeMailbox(self, name):
        self.mailboxNames.remove(name)

    def getAll(self):
        return self.mailboxNames

class Mailbox:

    def __init__(self, name):
        self.oid = 0
        self.name = name
        self.msgIds = 0
        self.messageIDs = []
        self.database = None

    def setDatabase(self, database):
        self.database = database

    def add(self, message, msgID = None):
        if msgID == None:
            msgID = self.msgIds
            self.msgIds += 1
        dbID = "%s-%d" % (self.name, msgID)
        message['time'] = time.time()
        message['dbID'] = dbID
        message['id'] = msgID
        self.messageIDs.append(msgID)
        try:
            self.database.create(message, dbID)
        except ige.ServerException:
            log.warning("Message not added to the database")

    def get(self, lastID = -1):
        result = []
        # are there any new messages?
        if lastID + 1 == self.msgIds:
            return result
        # create list of new messages
        result = [
            self.database["%s-%d" % (self.name, msgID)]
            for msgID in self.messageIDs if msgID > lastID
        ]
        return result

    def delete(self, msgIDs):
        for msgID in msgIDs:
            dbID = "%s-%d" % (self.name, msgID)
            #@log.debug("MsgMngr - deleting message", dbID)
            del self.database[dbID]
            self.messageIDs.remove(msgID)
        return 1

    def deleteAll(self):
        self.delete(self.messageIDs)

    def deleteOld(self, forum, maxAge):
        now = time.time()
        maxAge = maxAge * 24 * 60 * 60 # maxAge is in days
        delete = []
        for msgID in self.messageIDs:
            message = self.database["%s-%d" % (self.name, msgID)]
            if message['forum'] == forum and message['time'] + maxAge < now:
                #@log.debug("MsgMngr - deleting msg", self.name, forum, msgID)
                delete.append(msgID)
            elif message['forum'] == forum:
                break
        if not delete:
            return 0
        log.debug("MsgMngr - deleting %d messages (500 max) out of %d from %s/%s" % (len(delete), len(self.messageIDs), self.name, forum))
        t0 = time.time()
        maxMsg = 500
        count = min(len(delete), maxMsg)
        self.delete(delete[:maxMsg])
        t = time.time() - t0
        if t > 0.0:
            log.debug("MsgMngr - deleted %.3f msgs/sec" % (count / t))
        else:
            log.debug("MsgMngr - deleted NaN msgs/sec")
        return count

    def __getstate__(self):
        self.database = None
        return self.__dict__

    def upgrade(self):
        log.debug("Up-to-date")


1			#
2			# Copyright 2001 - 2016 Ludek Smid [http://www.ospace.net/]
3			#
4			# This file is part of Outer Space.
5			#
6			# Outer Space is free software; you can redistribute it and/or modify
7			# it under the terms of the GNU General Public License as published by
8			# the Free Software Foundation; either version 2 of the License, or
9			# (at your option) any later version.
10			#
11			# Outer Space is distributed in the hope that it will be useful,
12			# but WITHOUT ANY WARRANTY; without even the implied warranty of
13			# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14			# GNU General Public License for more details.
15			#
16			# You should have received a copy of the GNU General Public License
17			# along with Outer Space; if not, write to the Free Software
18			# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
19			#
20
21			import time, log, ige
22
23			class MsgMngrException(Exception):
24			pass
25
26			class MsgMngr:
27
28			MAILBOXROOT_ID = "#MAILBOXROOT#"
29
30			def __init__(self, database):
31			# init object space root
32			self.database = database
33			self.deleted = 0
34
35			def shutdown(self):
36			log.message('Shutdown')
37			self.database.shutdown()
38
39			def checkpoint(self):
40			self.database.checkpoint()
41
42			def clear(self):
43			self.database.clear()
44
45			def backup(self, basename):
46			self.database.backup(basename)
47
48			def upgrade(self):
49			return
50
51			def getMailboxRoot(self):
52			mailboxRoot = self.database.get(self.MAILBOXROOT_ID, None)
53			if not mailboxRoot:
54			mailboxRoot = MailboxRoot()
55			mailboxRoot.scan(self.database)
56			self.database.create(mailboxRoot, id = self.MAILBOXROOT_ID)
57			return mailboxRoot
58
59			def getMailbox(self, gameID, oid, recreate = True):
60			name = "%s-%s" % (gameID, oid)
61			try:
62			mailbox = self.database.get(name, None)
63			except:
64			log.warning("Cannot read the mailbox", name)
65			# force recreation
66			mailbox = None
67			if mailbox:
68			#if hasattr(mailbox, "setDatabase"):
69			mailbox.setDatabase(self.database)
70			return mailbox
71			if not recreate:
72			raise MsgMngrException("No such mailbox")
73			# create mailbox
74			log.message("Creating mailbox", name)
75			mailbox = Mailbox(name)
76			self.database.create(mailbox, id = name)
77			mailbox.setDatabase(self.database)
78			self.getMailboxRoot().addMailbox(name)
79			return mailbox
80
81			# send message
82			def send(self, gameID, oid, messageDict):
83			self.getMailbox(gameID, oid).add(messageDict)
84			return 1
85
86			# get messages from mailbox
87			def get(self, gameID, oid, lastID):
88			response = self.getMailbox(gameID, oid).get(lastID)
89			return response
90
91			# delete messages from mailbox
92			def delete(self, gameID, oid, msgIDs):
93			self.getMailbox(gameID, oid).delete(msgIDs)
94			return 1
95
96			# delete old messages from mailbox
97			def deleteOld(self, gameID, oid, forum, maxAge):
98			#@log.debug("Compresing mailbox", gameID, oid, forum)
99			self.deleted += self.getMailbox(gameID, oid).deleteOld(forum, maxAge)
100			if self.deleted >= 200:
101			self.database.checkpoint()
102			self.deleted = 0
103			#@log.debug("Compression finished", gameID, oid, forum)
104			return 1
105
106			# delete unused mailboxes
107			def trashUnusedMailboxes(self, mailboxes):
108			trash = self.getMailboxes()
109			#@log.debug("Mailboxes:", trash)
110			#@log.debug("Used:", mailboxes)
111			for mailbox in mailboxes:
112			if mailbox in trash:
113			trash.remove(mailbox)
114			for gameID, oid in trash:
115			log.message("Removing mailbox", gameID, oid)
116			box = self.getMailbox(gameID, oid)
117			box.deleteAll()
118			del self.database[box.name]
119			self.getMailboxRoot().removeMailbox(box.name)
120
121			def getMailboxes(self):
122			mailboxes = self.getMailboxRoot().getAll()
123			result = []
124			for mailbox in mailboxes:
125			gameID, oid = mailbox.split("-")
126			result.append((gameID, int(oid)))
127			return result
128
129			class MailboxRoot:
130
131			def __init__(self):
132			self.mailboxNames = []
133
134			def scan(self, db):
135			log.debug("* SCANNING MAILBOXES *")
136			self.mailboxNames = []
137			for key in db.keys():
138			if key.count("-") == 1:
139			# mailbox
140			self.mailboxNames.append(key)
141			else:
142			#skip ordinal mails and mailboxroot
143			continue
144
145			def addMailbox(self, name):
146			if name not in self.mailboxNames:
147			self.mailboxNames.append(name)
148
149			def removeMailbox(self, name):
150			self.mailboxNames.remove(name)
151
152			def getAll(self):
153			return self.mailboxNames
154
155			class Mailbox:
156
157			def __init__(self, name):
158			self.oid = 0
159			self.name = name
160			self.msgIds = 0
161			self.messageIDs = []
162			self.database = None
163
164			def setDatabase(self, database):
165			self.database = database
166
167			def add(self, message, msgID = None):
168			if msgID == None:
169			msgID = self.msgIds
170			self.msgIds += 1
171			dbID = "%s-%d" % (self.name, msgID)
172			message['time'] = time.time()
173			message['dbID'] = dbID
174			message['id'] = msgID
175			self.messageIDs.append(msgID)
176			try:
177			self.database.create(message, dbID)
178			except ige.ServerException:
179			log.warning("Message not added to the database")
180
181			def get(self, lastID = -1):
182			result = []
183			# are there any new messages?
184			if lastID + 1 == self.msgIds:
185			return result
186			# create list of new messages
187			result = [
188			self.database["%s-%d" % (self.name, msgID)]
189			for msgID in self.messageIDs if msgID > lastID
190			]
191			return result
192
193			def delete(self, msgIDs):
194			for msgID in msgIDs:
195			dbID = "%s-%d" % (self.name, msgID)
196			#@log.debug("MsgMngr - deleting message", dbID)
197			del self.database[dbID]
198			self.messageIDs.remove(msgID)
199			return 1
200
201			def deleteAll(self):
202			self.delete(self.messageIDs)
203
204			def deleteOld(self, forum, maxAge):
205			now = time.time()
206			maxAge = maxAge * 24 * 60 * 60 # maxAge is in days
207			delete = []
208			for msgID in self.messageIDs:
209			message = self.database["%s-%d" % (self.name, msgID)]
210			if message['forum'] == forum and message['time'] + maxAge < now:
211			#@log.debug("MsgMngr - deleting msg", self.name, forum, msgID)
212			delete.append(msgID)
213			elif message['forum'] == forum:
214			break
215			if not delete:
216			return 0
217			log.debug("MsgMngr - deleting %d messages (500 max) out of %d from %s/%s" % (len(delete), len(self.messageIDs), self.name, forum))
218			t0 = time.time()
219			maxMsg = 500
220			count = min(len(delete), maxMsg)
221			self.delete(delete[:maxMsg])
222			t = time.time() - t0
223			if t > 0.0:
224			log.debug("MsgMngr - deleted %.3f msgs/sec" % (count / t))
225			else:
226			log.debug("MsgMngr - deleted NaN msgs/sec")
227			return count
228
229			def __getstate__(self):
230			self.database = None
231			return self.__dict__
232
233			def upgrade(self):
234			log.debug("Up-to-date")
235

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