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#!/usr/bin/env python
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# encoding: utf-8
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# whoosh indexer daemon for rhodecode
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# Copyright (C) 2009-2010 Marcin Kuzminski <marcin@python-works.com>
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# as published by the Free Software Foundation; version 2
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# of the License or (at your opinion) any later version of the license.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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# MA 02110-1301, USA.
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"""
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Created on Jan 26, 2010
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@author: marcink
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A deamon will read from task table and run tasks
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"""
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import sys
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import os
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from os.path import dirname as dn
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from os.path import join as jn
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#to get the rhodecode import
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project_path = dn(dn(dn(dn(os.path.realpath(__file__)))))
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sys.path.append(project_path)
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from rhodecode.model.scm import ScmModel
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from rhodecode.lib.helpers import safe_unicode
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from whoosh.index import create_in, open_dir
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from shutil import rmtree
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from rhodecode.lib.indexers import INDEX_EXTENSIONS, SCHEMA, IDX_NAME
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from time import mktime
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from vcs.exceptions import ChangesetError, RepositoryError
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import logging
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log = logging.getLogger('whooshIndexer')
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# create logger
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log.setLevel(logging.DEBUG)
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log.propagate = False
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# create console handler and set level to debug
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ch = logging.StreamHandler()
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ch.setLevel(logging.DEBUG)
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# create formatter
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formatter = logging.Formatter("%(asctime)s - %(name)s - %(levelname)s - %(message)s")
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# add formatter to ch
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ch.setFormatter(formatter)
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# add ch to logger
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log.addHandler(ch)
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class WhooshIndexingDaemon(object):
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"""
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Deamon for atomic jobs
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"""
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def __init__(self, indexname='HG_INDEX', index_location=None,
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repo_location=None, sa=None):
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self.indexname = indexname
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self.index_location = index_location
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if not index_location:
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raise Exception('You have to provide index location')
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self.repo_location = repo_location
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if not repo_location:
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raise Exception('You have to provide repositories location')
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self.repo_paths = ScmModel(sa).repo_scan(self.repo_location, None)
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self.initial = False
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if not os.path.isdir(self.index_location):
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os.makedirs(self.index_location)
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log.info('Cannot run incremental index since it does not'
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' yet exist running full build')
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self.initial = True
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def get_paths(self, repo):
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"""recursive walk in root dir and return a set of all path in that dir
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based on repository walk function
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"""
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index_paths_ = set()
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try:
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for topnode, dirs, files in repo.walk('/', 'tip'):
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for f in files:
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index_paths_.add(jn(repo.path, f.path))
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for dir in dirs:
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for f in files:
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index_paths_.add(jn(repo.path, f.path))
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except RepositoryError:
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pass
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return index_paths_
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def get_node(self, repo, path):
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n_path = path[len(repo.path) + 1:]
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node = repo.get_changeset().get_node(n_path)
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return node
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def get_node_mtime(self, node):
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return mktime(node.last_changeset.date.timetuple())
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def add_doc(self, writer, path, repo):
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"""Adding doc to writer this function itself fetches data from
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the instance of vcs backend"""
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node = self.get_node(repo, path)
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#we just index the content of chosen files
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if node.extension in INDEX_EXTENSIONS:
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log.debug(' >> %s [WITH CONTENT]' % path)
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u_content = node.content
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else:
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log.debug(' >> %s' % path)
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#just index file name without it's content
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u_content = u''
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writer.add_document(owner=unicode(repo.contact),
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repository=safe_unicode(repo.name),
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path=safe_unicode(path),
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content=u_content,
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modtime=self.get_node_mtime(node),
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extension=node.extension)
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def build_index(self):
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if os.path.exists(self.index_location):
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log.debug('removing previous index')
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rmtree(self.index_location)
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if not os.path.exists(self.index_location):
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os.mkdir(self.index_location)
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idx = create_in(self.index_location, SCHEMA, indexname=IDX_NAME)
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writer = idx.writer()
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for cnt, repo in enumerate(self.repo_paths.values()):
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log.debug('building index @ %s' % repo.path)
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for idx_path in self.get_paths(repo):
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self.add_doc(writer, idx_path, repo)
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log.debug('>> COMMITING CHANGES <<')
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writer.commit(merge=True)
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log.debug('>>> FINISHED BUILDING INDEX <<<')
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def update_index(self):
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log.debug('STARTING INCREMENTAL INDEXING UPDATE')
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idx = open_dir(self.index_location, indexname=self.indexname)
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# The set of all paths in the index
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indexed_paths = set()
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# The set of all paths we need to re-index
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to_index = set()
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reader = idx.reader()
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writer = idx.writer()
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# Loop over the stored fields in the index
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for fields in reader.all_stored_fields():
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indexed_path = fields['path']
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indexed_paths.add(indexed_path)
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repo = self.repo_paths[fields['repository']]
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try:
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node = self.get_node(repo, indexed_path)
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except ChangesetError:
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# This file was deleted since it was indexed
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log.debug('removing from index %s' % indexed_path)
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writer.delete_by_term('path', indexed_path)
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else:
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# Check if this file was changed since it was indexed
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indexed_time = fields['modtime']
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mtime = self.get_node_mtime(node)
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if mtime > indexed_time:
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# The file has changed, delete it and add it to the list of
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# files to reindex
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log.debug('adding to reindex list %s' % indexed_path)
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writer.delete_by_term('path', indexed_path)
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to_index.add(indexed_path)
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# Loop over the files in the filesystem
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# Assume we have a function that gathers the filenames of the
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# documents to be indexed
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for repo in self.repo_paths.values():
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for path in self.get_paths(repo):
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if path in to_index or path not in indexed_paths:
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# This is either a file that's changed, or a new file
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# that wasn't indexed before. So index it!
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self.add_doc(writer, path, repo)
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log.debug('re indexing %s' % path)
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log.debug('>> COMMITING CHANGES <<')
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writer.commit(merge=True)
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log.debug('>>> FINISHED REBUILDING INDEX <<<')
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def run(self, full_index=False):
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"""Run daemon"""
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if full_index or self.initial:
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self.build_index()
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else:
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self.update_index()
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