X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=apt_p2p%2Fapt_p2p.py;h=4200f6299b78377593ce17cd6ad7b6973de7578e;hb=19dab12a49b05e17b3fc9e6fc246c31f157b4f48;hp=9e360a00d62acc08605e5957f4007003d216ed0a;hpb=7b1167d8ce780312d3689c9309c7e9c64060c085;p=quix0rs-apt-p2p.git diff --git a/apt_p2p/apt_p2p.py b/apt_p2p/apt_p2p.py index 9e360a0..4200f62 100644 --- a/apt_p2p/apt_p2p.py +++ b/apt_p2p/apt_p2p.py @@ -6,11 +6,12 @@ @var TORRENT_PIECES: the maximum number of pieces to store as a separate entry in the DHT @var download_dir: the name of the directory to use for downloaded files - +@var peer_dir: the name of the directory to use for peer downloads """ from binascii import b2a_hex from urlparse import urlunparse +from urllib import unquote import os, re, sha from twisted.internet import defer, reactor @@ -18,6 +19,7 @@ from twisted.web2 import server, http, http_headers, static from twisted.python import log, failure from twisted.python.filepath import FilePath +from interfaces import IDHT, IDHTStats from apt_p2p_conf import config from PeerManager import PeerManager from HTTPServer import TopLevel @@ -25,12 +27,14 @@ from MirrorManager import MirrorManager from CacheManager import CacheManager from Hash import HashObject from db import DB +from stats import StatsLogger from util import findMyIPAddr, compact DHT_PIECES = 4 TORRENT_PIECES = 70 download_dir = 'cache' +peer_dir = 'peers' class AptP2P: """The main code object that does all of the work. @@ -38,12 +42,16 @@ class AptP2P: Contains all of the sub-components that do all the low-level work, and coordinates communication between them. + @type dhtClass: L{interfaces.IDHT} + @ivar dhtClass: the DHT class to use @type cache_dir: L{twisted.python.filepath.FilePath} @ivar cache_dir: the directory to use for storing all files @type db: L{db.DB} @ivar db: the database to use for tracking files and hashes @type dht: L{interfaces.IDHT} - @ivar dht: the DHT instance to use + @ivar dht: the DHT instance + @type stats: L{stats.StatsLogger} + @ivar stats: the statistics logger to record sent data to @type http_server: L{HTTPServer.TopLevel} @ivar http_server: the web server that will handle all requests from apt and from other peers @@ -59,29 +67,37 @@ class AptP2P: download information (IP address and port) """ - def __init__(self, dht): + def __init__(self, dhtClass): """Initialize all the sub-components. - @type dht: L{interfaces.IDHT} - @param dht: the DHT instance to use + @type dhtClass: L{interfaces.IDHT} + @param dhtClass: the DHT class to use """ log.msg('Initializing the main apt_p2p application') - self.cache_dir = FilePath(config.get('DEFAULT', 'cache_dir')) + self.dhtClass = dhtClass + self.cache_dir = FilePath(config.get('DEFAULT', 'CACHE_DIR')) if not self.cache_dir.child(download_dir).exists(): self.cache_dir.child(download_dir).makedirs() + if not self.cache_dir.child(peer_dir).exists(): + self.cache_dir.child(peer_dir).makedirs() self.db = DB(self.cache_dir.child('apt-p2p.db')) - self.dht = dht + self.dht = dhtClass() self.dht.loadConfig(config, config.get('DEFAULT', 'DHT')) self.dht.join().addCallbacks(self.joinComplete, self.joinError) + self.stats = StatsLogger(self.db) self.http_server = TopLevel(self.cache_dir.child(download_dir), self.db, self) self.getHTTPFactory = self.http_server.getHTTPFactory - self.peers = PeerManager() - self.mirrors = MirrorManager(self.cache_dir, config.gettime('DEFAULT', 'UNLOAD_PACKAGES_CACHE')) - other_dirs = [FilePath(f) for f in config.getstringlist('DEFAULT', 'OTHER_DIRS')] - self.cache = CacheManager(self.cache_dir.child(download_dir), self.db, other_dirs, self) + self.peers = PeerManager(self.cache_dir.child(peer_dir), self.dht, self.stats) + self.mirrors = MirrorManager(self.cache_dir) + self.cache = CacheManager(self.cache_dir.child(download_dir), self.db, self) self.my_contact = None + reactor.addSystemEventTrigger('before', 'shutdown', self.shutdown) - #{ DHT maintenance + #{ Maintenance + def shutdown(self): + self.stats.save() + self.db.close() + def joinComplete(self, result): """Complete the DHT join process and determine our download information. @@ -124,6 +140,20 @@ class AptP2P: storeDefer.addBoth(self._refreshFiles, hashes) else: reactor.callLater(60, self.refreshFiles) + + def getStats(self): + """Retrieve and format the statistics for the program. + + @rtype: C{string} + @return: the formatted HTML page containing the statistics + """ + out = '\n\n' + out += self.stats.formatHTML(self.my_contact) + out += '\n\n' + if IDHTStats.implementedBy(self.dhtClass): + out += self.dht.getStats() + out += '\n\n' + return out #{ Main workflow def check_freshness(self, req, url, modtime, resp): @@ -141,7 +171,8 @@ class AptP2P: """ log.msg('Checking if %s is still fresh' % url) d = self.peers.get('', url, method = "HEAD", modtime = modtime) - d.addCallback(self.check_freshness_done, req, url, resp) + d.addCallbacks(self.check_freshness_done, self.check_freshness_error, + callbackArgs = (req, url, resp), errbackArgs = (req, url)) return d def check_freshness_done(self, resp, req, url, orig_resp): @@ -162,6 +193,17 @@ class AptP2P: log.msg('Stale, need to redownload: %s' % url) return self.get_resp(req, url) + def check_freshness_error(self, err, req, url): + """Mirror request failed, continue with download. + + @param err: the response from the mirror to the HEAD request + @type req: L{twisted.web2.http.Request} + @param req: the initial request sent to the HTTP server by apt + @param url: the URI of the actual mirror request + """ + log.err(err) + return self.get_resp(req, url) + def get_resp(self, req, url): """Lookup a hash for the file in the local mirror info. @@ -176,7 +218,7 @@ class AptP2P: d = defer.Deferred() log.msg('Trying to find hash for %s' % url) - findDefer = self.mirrors.findHash(url) + findDefer = self.mirrors.findHash(unquote(url)) findDefer.addCallbacks(self.findHash_done, self.findHash_error, callbackArgs=(req, url, d), errbackArgs=(req, url, d)) @@ -253,7 +295,7 @@ class AptP2P: log.msg('Looking up hash in DHT for file: %s' % url) key = hash.expected() lookupDefer = self.dht.getValue(key) - lookupDefer.addCallback(self.lookupHash_done, hash, url, d) + lookupDefer.addBoth(self.lookupHash_done, hash, url, d) def lookupHash_done(self, values, hash, url, d): """Start the download of the file. @@ -265,8 +307,11 @@ class AptP2P: @param values: the returned values from the DHT containing peer download information """ - if not values: - log.msg('Peers for %s were not found' % url) + if not isinstance(values, list) or not values: + if not isinstance(values, list): + log.msg('DHT lookup for %s failed with error %r' % (url, values)) + else: + log.msg('Peers for %s were not found' % url) getDefer = self.peers.get(hash, url) getDefer.addCallback(self.cache.save_file, hash, url) getDefer.addErrback(self.cache.save_error, url) @@ -336,15 +381,14 @@ class AptP2P: value['t'] = {'t': ''.join(pieces)} elif len(pieces) <= TORRENT_PIECES: # Short enough to be stored in a separate key in the DHT - s = sha.new().update(''.join(pieces)) - value['h'] = s.digest() + value['h'] = sha.new(''.join(pieces)).digest() else: # Too long, must be served up by our peer HTTP server - s = sha.new().update(''.join(pieces)) - value['l'] = s.digest() + value['l'] = sha.new(''.join(pieces)).digest() storeDefer = self.dht.storeValue(key, value) - storeDefer.addCallback(self.store_done, hash) + storeDefer.addCallbacks(self.store_done, self.store_error, + callbackArgs = (hash, ), errbackArgs = (hash.digest(), )) return storeDefer def store_done(self, result, hash): @@ -353,17 +397,22 @@ class AptP2P: pieces = hash.pieceDigests() if len(pieces) > DHT_PIECES and len(pieces) <= TORRENT_PIECES: # Add the piece data key and value to the DHT - s = sha.new().update(''.join(pieces)) - key = s.digest() + key = sha.new(''.join(pieces)).digest() value = {'t': ''.join(pieces)} storeDefer = self.dht.storeValue(key, value) - storeDefer.addCallback(self.store_torrent_done, key) + storeDefer.addCallbacks(self.store_torrent_done, self.store_error, + callbackArgs = (key, ), errbackArgs = (key, )) return storeDefer return result def store_torrent_done(self, result, key): """Adding the file to the DHT is complete, and so is the workflow.""" - log.msg('Added torrent string %s to the DHT: %r' % (b2ahex(key), result)) + log.msg('Added torrent string %s to the DHT: %r' % (b2a_hex(key), result)) return result + + def store_error(self, err, key): + """Adding to the DHT failed.""" + log.msg('An error occurred adding %s to the DHT: %r' % (b2a_hex(key), err)) + return err \ No newline at end of file