new database schema, containing package info

README.mkd

@@ -13,6 +13,5 @@ DEPENDENCIES
 
 TODO
 ====
-* [mediate] read package info
 * [low] support symlinking packages here
 * [low] verify packages

repomon.py

@@ -12,6 +12,7 @@ import sqlite3
 import socket
 import time
 import hashlib
+import pickle
 
 import pyinotify
 Event = pyinotify.Event
@@ -19,6 +20,7 @@ from tornado.ioloop import IOLoop
 import tornado.process
 
 import archpkg
+import pkgreader
 
 logger = logging.getLogger(__name__)
 
@@ -197,7 +199,8 @@ class EventHandler(pyinotify.ProcessEvent):
                          forarch text,
                          owner text,
                          mtime int,
-                         state int)''')
+                         state int,
+                         info text)''')
 
     dirs = [os.path.join(base, x) for x in ('any', 'i686', 'x86_64')]
     self.files = files = set()
@@ -305,11 +308,18 @@ class EventHandler(pyinotify.ProcessEvent):
         except KeyError:
           owner = 'uid_%d' % stat.st_uid
 
+        try:
+          info = pkgreader.readpkg(act.path)
+        except:
+          logger.error('failed to read info for package %s', act.path)
+          info = None
+        info = pickle.dumps(info)
+
         self._db.execute(
           '''insert or replace into pkginfo
-             (filename, pkgname, pkgarch, pkgver, forarch, state, owner, mtime) values
+             (filename, pkgname, pkgarch, pkgver, forarch, state, owner, mtime, info) values
-             (?,        ?,       ?,       ?,      ?,       ?,     ?,     ?)''',
+             (?,        ?,       ?,       ?,      ?,       ?,     ?,     ?,     ?)''',
-          (act.path, act.name, act.arch, act.fullversion, arch, 1, owner, mtime))
+          (act.path, act.name, act.arch, act.fullversion, arch, 1, owner, mtime, info))
 
     else:
       res = self._db.execute('select state from pkginfo where filename = ? and state = 1 limit 1', (act.path,))

scripts/common.py

@@ -0,0 +1,18 @@
+import sqlite3
+
+def getver(db):
+  try:
+    ver = tuple(db.execute('select ver from version_info limit 1'))[0][0]
+  except sqlite3.OperationalError:
+    ver = '0.1' # This version has no version info
+  return ver
+
+def setver(db, ver):
+  db.execute('''create table if not exists version_info
+                (ver text)''')
+  c = tuple(db.execute('select count(*) from version_info'))[0][0]
+  if c == 1:
+    db.execute('update version_info set ver=?', (ver,))
+  else:
+    db.execute('insert into version_info (ver) values (?)', (ver,))
+  db.commit()

scripts/upgrade_from_0.1.py

@@ -0,0 +1,45 @@
+#!/usr/bin/env python3
+# vim:fileencoding=utf-8
+
+import os, sys
+import sqlite3
+import configparser
+import pickle
+
+top_dir = os.path.normpath(os.path.join(__file__, '../..'))
+sys.path.append(top_dir)
+
+import pkgreader
+from common import *
+
+def main(conffile):
+  config = configparser.ConfigParser()
+  config.read(conffile)
+  config = config['repository']
+
+  base = config.get('path')
+  dbname = config.get('info-db', os.path.join(base, 'pkginfo.db'))
+  db = sqlite3.connect(dbname, isolation_level=None)
+  assert getver(db) == '0.1', 'wrong database version'
+  input('Please stop the service and then press Enter.')
+  try:
+    db.execute('alter table pkginfo add info text')
+  except sqlite3.OperationalError:
+    # the column is already there
+    pass
+  pkgs = [x[0] for x in db.execute('select filename from pkginfo')]
+  for p in pkgs:
+    try:
+      info = pkgreader.readpkg(p)
+    except:
+      logger.error('failed to read info for package %s', act.path)
+      info = None
+    info = pickle.dumps(info)
+    db.execute('update pkginfo set info=?', (info,))
+  setver(db, '0.2')
+  db.close()
+
+  input('Please re-start the service with new code and then press Enter.')
+
+if __name__ == '__main__':
+  main(sys.argv[1])