389 lines
16 KiB
Python
389 lines
16 KiB
Python
import time
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import collections
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import itertools
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import re
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import gevent
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from util import helper
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from Plugin import PluginManager
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from Config import config
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if "content_db" not in locals().keys(): # To keep between module reloads
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content_db = None
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@PluginManager.registerTo("ContentDb")
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class ContentDbPlugin(object):
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def __init__(self, *args, **kwargs):
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global content_db
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content_db = self
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self.filled = {} # Site addresses that already filled from content.json
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self.need_filling = False # file_optional table just created, fill data from content.json files
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self.time_peer_numbers_updated = 0
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self.my_optional_files = {} # Last 50 site_address/inner_path called by fileWrite (auto-pinning these files)
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self.optional_files = collections.defaultdict(dict)
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self.optional_files_loading = False
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helper.timer(60 * 5, self.checkOptionalLimit)
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super(ContentDbPlugin, self).__init__(*args, **kwargs)
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def getSchema(self):
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schema = super(ContentDbPlugin, self).getSchema()
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# Need file_optional table
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schema["tables"]["file_optional"] = {
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"cols": [
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["file_id", "INTEGER PRIMARY KEY UNIQUE NOT NULL"],
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["site_id", "INTEGER REFERENCES site (site_id) ON DELETE CASCADE"],
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["inner_path", "TEXT"],
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["hash_id", "INTEGER"],
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["size", "INTEGER"],
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["peer", "INTEGER DEFAULT 0"],
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["uploaded", "INTEGER DEFAULT 0"],
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["is_downloaded", "INTEGER DEFAULT 0"],
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["is_pinned", "INTEGER DEFAULT 0"],
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["time_added", "INTEGER DEFAULT 0"],
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["time_downloaded", "INTEGER DEFAULT 0"],
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["time_accessed", "INTEGER DEFAULT 0"]
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],
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"indexes": [
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"CREATE UNIQUE INDEX file_optional_key ON file_optional (site_id, inner_path)",
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"CREATE INDEX is_downloaded ON file_optional (is_downloaded)"
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],
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"schema_changed": 11
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}
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return schema
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def initSite(self, site):
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super(ContentDbPlugin, self).initSite(site)
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if self.need_filling:
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self.fillTableFileOptional(site)
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if not self.optional_files_loading:
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gevent.spawn_later(1, self.loadFilesOptional)
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self.optional_files_loading = True
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def checkTables(self):
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changed_tables = super(ContentDbPlugin, self).checkTables()
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if "file_optional" in changed_tables:
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self.need_filling = True
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return changed_tables
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# Load optional files ending
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def loadFilesOptional(self):
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s = time.time()
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num = 0
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total = 0
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total_downloaded = 0
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res = content_db.execute("SELECT site_id, inner_path, size, is_downloaded FROM file_optional")
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site_sizes = collections.defaultdict(lambda: collections.defaultdict(int))
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for row in res:
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self.optional_files[row["site_id"]][row["inner_path"][-8:]] = 1
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num += 1
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# Update site size stats
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site_sizes[row["site_id"]]["size_optional"] += row["size"]
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if row["is_downloaded"]:
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site_sizes[row["site_id"]]["optional_downloaded"] += row["size"]
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# Site site size stats to sites.json settings
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site_ids_reverse = {val: key for key, val in self.site_ids.iteritems()}
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for site_id, stats in site_sizes.iteritems():
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site_address = site_ids_reverse.get(site_id)
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if not site_address:
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self.log.error("Not found site_id: %s" % site_id)
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continue
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site = self.sites[site_address]
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site.settings["size_optional"] = stats["size_optional"]
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site.settings["optional_downloaded"] = stats["optional_downloaded"]
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total += stats["size_optional"]
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total_downloaded += stats["optional_downloaded"]
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self.log.debug(
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"Loaded %s optional files: %.2fMB, downloaded: %.2fMB in %.3fs" %
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(num, float(total) / 1024 / 1024, float(total_downloaded) / 1024 / 1024, time.time() - s)
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)
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if self.need_filling and self.getOptionalLimitBytes() < total_downloaded:
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limit_bytes = self.getOptionalLimitBytes()
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limit_new = round((float(total_downloaded) / 1024 / 1024 / 1024) * 1.1, 2) # Current limit + 10%
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self.log.debug(
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"First startup after update and limit is smaller than downloaded files size (%.2fGB), increasing it from %.2fGB to %.2fGB" %
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(float(total_downloaded) / 1024 / 1024 / 1024, float(limit_bytes) / 1024 / 1024 / 1024, limit_new)
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)
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config.saveValue("optional_limit", limit_new)
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config.optional_limit = str(limit_new)
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# Predicts if the file is optional
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def isOptionalFile(self, site_id, inner_path):
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return self.optional_files[site_id].get(inner_path[-8:])
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# Fill file_optional table with optional files found in sites
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def fillTableFileOptional(self, site):
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s = time.time()
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site_id = self.site_ids.get(site.address)
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if not site_id:
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return False
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cur = self.getCursor()
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cur.execute("BEGIN")
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res = cur.execute("SELECT * FROM content WHERE size_files_optional > 0 AND site_id = %s" % site_id)
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num = 0
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for row in res.fetchall():
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content = site.content_manager.contents[row["inner_path"]]
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try:
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num += self.setContentFilesOptional(site, row["inner_path"], content, cur=cur)
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except Exception, err:
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self.log.error("Error loading %s into file_optional: %s" % (row["inner_path"], err))
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cur.execute("COMMIT")
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cur.close()
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# Set my files to pinned
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from User import UserManager
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user = UserManager.user_manager.get()
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if not user:
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user = UserManager.user_manager.create()
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auth_address = user.getAuthAddress(site.address)
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self.execute(
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"UPDATE file_optional SET is_pinned = 1 WHERE site_id = :site_id AND inner_path LIKE :inner_path",
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{"site_id": site_id, "inner_path": "%%/%s/%%" % auth_address}
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)
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self.log.debug(
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"Filled file_optional table for %s in %.3fs (loaded: %s, is_pinned: %s)" %
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(site.address, time.time() - s, num, self.cur.cursor.rowcount)
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)
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self.filled[site.address] = True
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def setContentFilesOptional(self, site, content_inner_path, content, cur=None):
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if not cur:
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cur = self
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try:
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cur.execute("BEGIN")
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except Exception, err:
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self.log.warning("Transaction begin error %s %s: %s" % (site, content_inner_path, Debug.formatException(err)))
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num = 0
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site_id = self.site_ids[site.address]
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content_inner_dir = helper.getDirname(content_inner_path)
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for relative_inner_path, file in content.get("files_optional", {}).iteritems():
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file_inner_path = content_inner_dir + relative_inner_path
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hash_id = int(file["sha512"][0:4], 16)
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if hash_id in site.content_manager.hashfield:
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is_downloaded = 1
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else:
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is_downloaded = 0
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if site.address + "/" + file_inner_path in self.my_optional_files:
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is_pinned = 1
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else:
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is_pinned = 0
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cur.insertOrUpdate("file_optional", {
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"hash_id": hash_id,
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"size": int(file["size"]),
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"is_pinned": is_pinned
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}, {
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"site_id": site_id,
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"inner_path": file_inner_path
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}, oninsert={
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"time_added": int(time.time()),
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"time_downloaded": int(time.time()) if is_downloaded else 0,
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"is_downloaded": is_downloaded,
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"peer": is_downloaded
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})
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self.optional_files[site_id][file_inner_path[-8:]] = 1
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num += 1
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if cur == self:
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try:
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cur.execute("END")
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except Exception, err:
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self.log.warning("Transaction end error %s %s: %s" % (site, content_inner_path, Debug.formatException(err)))
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return num
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def setContent(self, site, inner_path, content, size=0):
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super(ContentDbPlugin, self).setContent(site, inner_path, content, size=size)
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old_content = site.content_manager.contents.get(inner_path, {})
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if (not self.need_filling or self.filled.get(site.address)) and "files_optional" in content or "files_optional" in old_content:
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self.setContentFilesOptional(site, inner_path, content)
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# Check deleted files
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if old_content:
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old_files = old_content.get("files_optional", {}).keys()
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new_files = content.get("files_optional", {}).keys()
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content_inner_dir = helper.getDirname(inner_path)
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deleted = [content_inner_dir + key for key in old_files if key not in new_files]
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if deleted:
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site_id = self.site_ids[site.address]
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self.execute("DELETE FROM file_optional WHERE ?", {"site_id": site_id, "inner_path": deleted})
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def deleteContent(self, site, inner_path):
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content = site.content_manager.contents.get(inner_path)
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if content and "files_optional" in content:
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site_id = self.site_ids[site.address]
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content_inner_dir = helper.getDirname(inner_path)
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optional_inner_paths = [
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content_inner_dir + relative_inner_path
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for relative_inner_path in content.get("files_optional", {}).keys()
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]
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self.execute("DELETE FROM file_optional WHERE ?", {"site_id": site_id, "inner_path": optional_inner_paths})
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super(ContentDbPlugin, self).deleteContent(site, inner_path)
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def updatePeerNumbers(self):
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s = time.time()
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num_file = 0
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num_updated = 0
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num_site = 0
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for site in self.sites.values():
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if not site.content_manager.has_optional_files:
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continue
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has_updated_hashfield = next((
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peer
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for peer in site.peers.itervalues()
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if peer.has_hashfield and peer.hashfield.time_changed > self.time_peer_numbers_updated
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), None)
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if not has_updated_hashfield and site.content_manager.hashfield.time_changed < self.time_peer_numbers_updated:
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continue
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hashfield_peers = itertools.chain.from_iterable(
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peer.hashfield.storage
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for peer in site.peers.itervalues()
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if peer.has_hashfield
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)
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peer_nums = collections.Counter(
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itertools.chain(
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hashfield_peers,
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site.content_manager.hashfield
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)
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)
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site_id = self.site_ids[site.address]
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if not site_id:
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continue
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res = self.execute("SELECT file_id, hash_id, peer FROM file_optional WHERE ?", {"site_id": site_id})
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updates = {}
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for row in res:
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peer_num = peer_nums.get(row["hash_id"], 0)
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if peer_num != row["peer"]:
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updates[row["file_id"]] = peer_num
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self.execute("BEGIN")
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for file_id, peer_num in updates.iteritems():
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self.execute("UPDATE file_optional SET peer = ? WHERE file_id = ?", (peer_num, file_id))
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self.execute("END")
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num_updated += len(updates)
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num_file += len(peer_nums)
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num_site += 1
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self.time_peer_numbers_updated = time.time()
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self.log.debug("%s/%s peer number for %s site updated in %.3fs" % (num_updated, num_file, num_site, time.time() - s))
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def queryDeletableFiles(self):
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# First return the files with atleast 10 seeder and not accessed in last weed
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query = """
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SELECT * FROM file_optional
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WHERE peer > 10 AND is_downloaded = 1 AND is_pinned = 0
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ORDER BY time_accessed < %s DESC, uploaded / size
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""" % int(time.time() - 60 * 60 * 7)
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limit_start = 0
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while 1:
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num = 0
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res = self.execute("%s LIMIT %s, 50" % (query, limit_start))
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for row in res:
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yield row
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num += 1
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if num < 50:
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break
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limit_start += 50
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self.log.debug("queryDeletableFiles returning less-seeded files")
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# Then return files less seeder but still not accessed in last week
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query = """
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SELECT * FROM file_optional
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WHERE is_downloaded = 1 AND peer <= 10 AND is_pinned = 0
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ORDER BY peer DESC, time_accessed < %s DESC, uploaded / size
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""" % int(time.time() - 60 * 60 * 7)
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limit_start = 0
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while 1:
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num = 0
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res = self.execute("%s LIMIT %s, 50" % (query, limit_start))
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for row in res:
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yield row
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num += 1
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if num < 50:
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break
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limit_start += 50
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self.log.debug("queryDeletableFiles returning everyting")
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# At the end return all files
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query = """
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SELECT * FROM file_optional
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WHERE is_downloaded = 1 AND peer <= 10 AND is_pinned = 0
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ORDER BY peer DESC, time_accessed, uploaded / size
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"""
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limit_start = 0
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while 1:
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num = 0
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res = self.execute("%s LIMIT %s, 50" % (query, limit_start))
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for row in res:
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yield row
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num += 1
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if num < 50:
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break
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limit_start += 50
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def getOptionalLimitBytes(self):
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if config.optional_limit.endswith("%"):
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limit_percent = float(re.sub("[^0-9.]", "", config.optional_limit))
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limit_bytes = helper.getFreeSpace() * (limit_percent / 100)
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else:
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limit_bytes = float(re.sub("[^0-9.]", "", config.optional_limit)) * 1024 * 1024 * 1024
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return limit_bytes
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def checkOptionalLimit(self, limit=None):
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if not limit:
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limit = self.getOptionalLimitBytes()
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if limit < 0:
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self.log.debug("Invalid limit for optional files: %s" % limit)
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return False
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size = self.execute("SELECT SUM(size) FROM file_optional WHERE is_downloaded = 1 AND is_pinned = 0").fetchone()[0]
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if not size:
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size = 0
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need_delete = size - limit
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self.log.debug("Optional size: %.1fMB/%.1fMB" % (float(size) / 1024 / 1024, float(limit) / 1024 / 1024))
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if need_delete <= 0:
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return False
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self.updatePeerNumbers()
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site_ids_reverse = {val: key for key, val in self.site_ids.iteritems()}
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deleted_file_ids = []
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for row in self.queryDeletableFiles():
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site_address = site_ids_reverse.get(row["site_id"])
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site = self.sites.get(site_address)
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if not site:
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self.log.error("No site found for id: %s" % row["site_id"])
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continue
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site.log.debug("Deleting %s %.3f MB left" % (row["inner_path"], float(need_delete) / 1024 / 1024))
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deleted_file_ids.append(row["file_id"])
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try:
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site.content_manager.optionalRemove(row["inner_path"], row["hash_id"], row["size"])
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site.storage.delete(row["inner_path"])
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need_delete -= row["size"]
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except Exception, err:
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site.log.error("Error deleting %s: %s" % (row["inner_path"], err))
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if need_delete <= 0:
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break
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cur = self.getCursor()
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cur.execute("BEGIN")
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for file_id in deleted_file_ids:
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cur.execute("UPDATE file_optional SET is_downloaded = 0, is_pinned = 0, peer = peer - 1 WHERE ?", {"file_id": file_id})
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cur.execute("COMMIT")
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cur.close()
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