static void DoMain(string [] args)
{
SystemInformation.SetProcessName("beagrep-build-index");
if (args.Length < 2)
{
PrintUsage();
}
ArrayList allowed_patterns = new ArrayList();
ArrayList denied_patterns = new ArrayList();
ArrayList denied_dir_patterns = new ArrayList();
int i = 0;
while (i < args.Length)
{
string arg = args [i];
++i;
string next_arg = i < args.Length ? args [i] : null;
switch (arg)
{
case "-h":
case "--help":
PrintUsage();
break;
case "--tag":
if (next_arg != null)
{
arg_tag = next_arg;
}
++i;
break;
case "-r":
case "--recursive":
arg_recursive = true;
break;
case "--enable-deletion":
arg_delete = true;
break;
case "--disable-directories":
arg_disable_directories = true;
break;
case "--enable-text-cache":
arg_cache_text = true;
break;
case "--target":
if (next_arg != null)
{
arg_output = Path.IsPathRooted(next_arg) ? next_arg : Path.GetFullPath(next_arg);
}
++i;
break;
case "--disable-filtering":
arg_disable_filtering = true;
break;
case "--allow-pattern":
if (next_arg == null)
{
break;
}
if (next_arg.IndexOf(',') != -1)
{
foreach (string pattern in next_arg.Split(','))
{
allowed_patterns.Add(pattern);
}
}
else
{
allowed_patterns.Add(next_arg);
}
++i;
break;
case "--deny-directory-pattern":
if (next_arg == null)
{
break;
}
if (next_arg.IndexOf(',') != -1)
{
foreach (string pattern in next_arg.Split(','))
{
denied_dir_patterns.Add(pattern);
}
}
else
{
denied_dir_patterns.Add(next_arg);
}
++i;
break;
case "--deny-pattern":
if (next_arg == null)
{
break;
}
if (next_arg.IndexOf(',') != -1)
{
foreach (string pattern in next_arg.Split(','))
{
denied_patterns.Add(pattern);
}
}
else
{
denied_patterns.Add(next_arg);
}
++i;
break;
case "--disable-restart":
arg_disable_restart = true;
break;
case "--source":
if (next_arg == null)
{
break;
}
arg_source = next_arg;
++i;
break;
default:
if (arg.StartsWith("-") || arg.StartsWith("--"))
{
PrintUsage();
}
string path = Path.IsPathRooted(arg) ? arg : Path.GetFullPath(arg);
if (path != "/" && path.EndsWith("/"))
{
path = path.TrimEnd('/');
}
if (Directory.Exists(path))
{
pending_directories.Enqueue(new DirectoryInfo(path));
}
else if (File.Exists(path))
{
pending_files.Enqueue(new FileInfo(path));
}
break;
}
}
/////////////////////////////////////////////////////////
if (arg_output == null)
{
Logger.Log.Error("--target must be specified");
Environment.Exit(1);
}
// Set the storage dir, this should be used to store log messages
// and filterver.dat
PathFinder.StorageDir = arg_output;
foreach (FileSystemInfo info in pending_directories)
{
if (Path.GetFullPath(arg_output) == info.FullName)
{
Logger.Log.Error("Target directory cannot be one of the source paths.");
Environment.Exit(1);
}
}
foreach (FileSystemInfo info in pending_files)
{
if (Path.GetFullPath(arg_output) == info.FullName)
{
Logger.Log.Error("Target directory cannot be one of the source paths.");
Environment.Exit(1);
}
}
if (!Directory.Exists(Path.GetDirectoryName(arg_output)))
{
Logger.Log.Error("Index directory not available for construction: {0}", arg_output);
Environment.Exit(1);
}
// Be *EXTRA PARANOID* about the contents of the target
// directory, because creating an indexing driver will
// nuke it.
if (Directory.Exists(arg_output))
{
foreach (FileInfo info in DirectoryWalker.GetFileInfos(arg_output))
{
if (Array.IndexOf(allowed_files, info.Name) == -1)
{
Logger.Log.Error("{0} doesn't look safe to delete: non-Beagrep file {1} was found", arg_output, info.FullName);
Environment.Exit(1);
}
}
foreach (DirectoryInfo info in DirectoryWalker.GetDirectoryInfos(arg_output))
{
if (Array.IndexOf(allowed_dirs, info.Name) == -1)
{
Logger.Log.Error("{0} doesn't look safe to delete: non-Beagrep directory {1} was found", arg_output, info.FullName);
Environment.Exit(1);
}
}
}
string config_file_path = Path.Combine(arg_output, "StaticIndex.xml");
string prev_source = null;
if (File.Exists(config_file_path))
{
Config static_index_config = Conf.LoadFrom(config_file_path);
if (static_index_config == null)
{
Log.Error("Invalid configuation file {0}", config_file_path);
Environment.Exit(1);
}
prev_source = static_index_config.GetOption("Source", null);
if (arg_source != null && prev_source != arg_source)
{
Log.Error("Source already set to {0} for existing static index. Cannot set source to {1}.", prev_source, arg_source);
Environment.Exit(1);
}
// If arg_source is not given, and prev_source is present, use prev_source
// as the arg_source. This is useful for re-running build-index without
// giving --arg_source for already existing static index
arg_source = prev_source;
}
if (arg_source == null)
{
DirectoryInfo dir = new DirectoryInfo(StringFu.SanitizePath(arg_output));
arg_source = dir.Name;
}
string global_files_config = Path.Combine(PathFinder.ConfigDataDir, "config-files");
global_files_config = Path.Combine(global_files_config, Conf.Names.FilesQueryableConfig + ".xml");
if (!File.Exists(global_files_config))
{
Log.Error("Global configuration file not found {0}", global_files_config);
Environment.Exit(0);
}
// Setup regexes for allowed/denied patterns
if (allowed_patterns.Count > 0)
{
allowed_regex = StringFu.GetPatternRegex(allowed_patterns);
}
else
{
// Read the exclude values from config
// For system-wide indexes, only the global config value will be used
Config config = Conf.Get(Conf.Names.FilesQueryableConfig);
List <string[]> values = config.GetListOptionValues(Conf.Names.ExcludePattern);
if (values != null)
{
foreach (string[] exclude in values)
{
denied_patterns.Add(exclude [0]);
}
}
if (denied_patterns.Count > 0)
{
denied_regex = StringFu.GetPatternRegex(denied_patterns);
}
}
if (denied_dir_patterns.Count > 0)
{
denied_dir_regex = StringFu.GetPatternRegex(denied_dir_patterns);
Log.Always("Will ignore directories matching regular expression: {0}", denied_dir_regex);
}
Log.Always("Starting beagrep-build-index (pid {0}) at {1}", Process.GetCurrentProcess().Id, DateTime.Now);
driver = new LuceneIndexingDriver(arg_output, MINOR_VERSION, false);
driver.TextCache = (arg_cache_text) ? new TextCache(arg_output) : null;
if (driver.TextCache != null)
{
driver.TextCache.WorldReadable = true;
}
backing_fa_store = new FileAttributesStore_Sqlite(driver.TopDirectory, driver.Fingerprint);
fa_store = new FileAttributesStore(backing_fa_store);
// Set up signal handlers
#if MONO_1_9
Shutdown.SetupSignalHandlers(delegate(int signal)
{
if (signal == (int)Mono.Unix.Native.Signum.SIGINT ||
signal == (int)Mono.Unix.Native.Signum.SIGTERM)
{
Shutdown.BeginShutdown();
}
});
#else
SetupSignalHandlers();
#endif
Thread monitor_thread = null;
Stopwatch watch = new Stopwatch();
watch.Start();
if (!arg_disable_restart)
{
// Start the thread that monitors memory usage.
monitor_thread = ExceptionHandlingThread.Start(new ThreadStart(MemoryMonitorWorker));
}
// Start indexworker to do the crawling and indexing
IndexWorker();
// Join any threads so that we know that we're the only thread still running
if (monitor_thread != null)
{
monitor_thread.Join();
}
watch.Stop();
Logger.Log.Debug("Elapsed time {0}.", watch);
// Write this after indexing is done. This is because, if creating a new index,
// LuceneIndexingDriver.Create() is called which purges the entire directory.
if (prev_source == null)
{
Config static_index_config = Conf.LoadNew("StaticIndex.xml");
// Write StaticIndex.xml containing:
// The name of the source
static_index_config.SetOption("Source", arg_source);
static_index_config ["Source"].Description = "Source of the static index";
Conf.SaveTo(static_index_config, config_file_path);
}
if (restart)
{
Logger.Log.Debug("Restarting beagrep-build-index");
Process p = new Process();
p.StartInfo.UseShellExecute = false;
// FIXME: Maybe this isn't the right way to do things? It should be ok,
// the PATH is inherited from the shell script which runs mono itself.
p.StartInfo.FileName = "mono";
p.StartInfo.Arguments = String.Join(" ", Environment.GetCommandLineArgs());
p.Start();
}
Log.Always("Exiting beagrep-build-index (pid {0}) at {1}", Process.GetCurrentProcess().Id, DateTime.Now);
}
static void LaunchHelper ()
{
// If we are in the process of shutting down, return immediately.
if (Shutdown.ShutdownRequested)
return;
lock (helper_lock) {
// If a helper appears to be running, return immediately.
if (CheckHelper ())
return;
Logger.Log.Debug ("Launching helper process");
SafeProcess p = new SafeProcess ();
string[] args = new string [3];
args [0] = helper_path;
if (BeagrepDaemon.DisableTextCache)
args [1] = "--disable-text-cache";
else
args [1] = String.Empty;
if (Log.Level == LogLevel.Debug)
args [2] = "--debug";
else
args [2] = String.Empty;
p.Arguments = args;
p.RedirectStandardOutput = false;
p.RedirectStandardError = false;
p.Start ();
Logger.Log.Debug ("IndexHelper PID is {0}", p.Id);
// Poll the helper's socket. Wait up to a minute
// (500 ms * 120 times) for the helper to be ready
// to handle requests.
Stopwatch watch = new Stopwatch ();
watch.Start ();
int poll_count = 0;
bool found_helper;
do {
Thread.Sleep (500);
++poll_count;
found_helper = CheckHelper ();
} while (poll_count < 120
&& ! found_helper
&& ! Shutdown.ShutdownRequested);
watch.Stop ();
if (! found_helper)
throw new Exception (String.Format ("Couldn't launch helper process {0}", p.Id));
Logger.Log.Debug ("Found IndexHelper ({0}) in {1}", p.Id, watch);
helper_pid = p.Id;
}
}
////////////////////////////////////////////////////////////////
public void DoQuery(Query query,
IQueryResult result,
ICollection search_subset_uris, // should be internal uris
QueryPartHook query_part_hook,
HitFilter hit_filter)
{
if (Debug)
{
Logger.Log.Debug("###### {0}: Starting low-level queries", IndexName);
}
Stopwatch total, a, b, c, d, e, f;
total = new Stopwatch();
a = new Stopwatch();
b = new Stopwatch();
c = new Stopwatch();
d = new Stopwatch();
e = new Stopwatch();
f = new Stopwatch();
total.Start();
a.Start();
ArrayList primary_required_part_queries;
ArrayList secondary_required_part_queries;
LNS.BooleanQuery primary_prohibited_part_query;
LNS.BooleanQuery secondary_prohibited_part_query;
AndHitFilter all_hit_filters;
ArrayList term_list;
// Assemble all of the parts into a bunch of Lucene queries
term_list = AssembleQuery(query,
query_part_hook,
hit_filter,
out primary_required_part_queries,
out secondary_required_part_queries,
out primary_prohibited_part_query,
out secondary_prohibited_part_query,
out all_hit_filters);
a.Stop();
if (Debug)
{
Log.Debug("###### {0}: Building queries took {1}", IndexName, a);
}
// If we have no required parts, give up.
if (primary_required_part_queries == null)
{
return;
}
b.Start();
//
// Now that we have all of these nice queries, let's execute them!
//
IndexReader primary_reader;
LNS.IndexSearcher primary_searcher;
IndexReader secondary_reader;
LNS.IndexSearcher secondary_searcher;
// Create the searchers that we will need.
if (!BuildSearchers(out primary_reader, out primary_searcher, out secondary_reader, out secondary_searcher))
{
return;
}
b.Stop();
if (Debug)
{
Log.Debug("###### {0}: Readers/searchers built in {1}", IndexName, b);
}
// Build whitelists and blacklists for search subsets.
c.Start();
// Possibly create our whitelists from the search subset.
LuceneBitArray primary_whitelist, secondary_whitelist;
CreateQueryWhitelists(search_subset_uris,
primary_searcher,
secondary_searcher,
primary_prohibited_part_query,
secondary_prohibited_part_query,
out primary_whitelist,
out secondary_whitelist);
c.Stop();
if (Debug)
{
Log.Debug("###### {0}: Whitelists and blacklists built in {1}", IndexName, c);
}
// Now run the low level queries against our indexes.
d.Start();
BetterBitArray primary_matches = null;
if (primary_required_part_queries != null)
{
if (secondary_searcher != null)
{
primary_matches = DoRequiredQueries_TwoIndex(primary_searcher,
secondary_searcher,
primary_required_part_queries,
secondary_required_part_queries,
primary_whitelist,
secondary_whitelist);
}
else
{
primary_matches = DoRequiredQueries(primary_searcher,
primary_required_part_queries,
primary_whitelist);
}
}
d.Stop();
if (Debug)
{
Logger.Log.Debug("###### {0}: Low-level queries finished in {1}", IndexName, d);
}
e.Start();
// Only generate results if we got some matches
if (primary_matches != null && primary_matches.ContainsTrue())
{
GenerateQueryResults(primary_reader,
secondary_reader,
primary_matches,
result,
term_list,
query.MaxHits,
new HitFilter(all_hit_filters.HitFilter),
IndexName);
}
e.Stop();
if (Debug)
{
Log.Debug("###### {0}: Query results generated in {1}", IndexName, e);
}
//
// Finally, we clean up after ourselves.
//
f.Start();
CloseSearchers(primary_reader, primary_searcher, secondary_reader, secondary_searcher);
f.Stop();
if (Debug)
{
Log.Debug("###### {0}: Readers/searchers released in {1}", IndexName, f);
}
total.Stop();
if (Debug)
{
Log.Debug("###### {0}: Query time breakdown:", IndexName);
Log.Debug("###### {0}: Build queries {1,6} ({2:0.0}%)", IndexName, a, 100 * a.ElapsedTime / total.ElapsedTime);
Log.Debug("###### {0}: Got readers {1,6} ({2:0.0}%)", IndexName, b, 100 * b.ElapsedTime / total.ElapsedTime);
Log.Debug("###### {0}: Whitelists {1,6} ({2:0.0}%)", IndexName, c, 100 * c.ElapsedTime / total.ElapsedTime);
Log.Debug("###### {0}: Queries {1,6} ({2:0.0}%)", IndexName, d, 100 * d.ElapsedTime / total.ElapsedTime);
Log.Debug("###### {0}: Gen'd Results {1,6} ({2:0.0}%)", IndexName, e, 100 * e.ElapsedTime / total.ElapsedTime);
Log.Debug("###### {0}: Reader cleanup {1,6} ({2:0.0}%)", IndexName, f, 100 * f.ElapsedTime / total.ElapsedTime);
Log.Debug("###### {0}: TOTAL {1,6}", IndexName, total);
Logger.Log.Debug("###### {0}: Total query run in {1}", IndexName, total);
}
}
private static void GenerateQueryResults(IndexReader primary_reader,
IndexReader secondary_reader,
BetterBitArray primary_matches,
IQueryResult result,
ICollection query_term_list,
int max_results,
HitFilter hit_filter,
string index_name)
{
int num_hits;
if (Debug)
{
Logger.Log.Debug(">>> {0}: Initially handed {1} matches", index_name, primary_matches.TrueCount);
}
if (primary_matches.TrueCount <= max_results)
{
if (Debug)
{
Logger.Log.Debug(">>> {0}: Initial count is within our limit of {1}", index_name, max_results);
}
num_hits = primary_matches.TrueCount;
}
else
{
if (Debug)
{
Logger.Log.Debug(">>> {0}: Number of hits is capped at {1}", index_name, max_results);
}
num_hits = max_results;
}
Stopwatch total, d, e;
total = new Stopwatch();
d = new Stopwatch();
e = new Stopwatch();
total.Start();
ArrayList final_list_of_hits = null;
// This is used only for scoring
Dictionary <int, Hit> hits_by_id = new Dictionary <int, Hit> (num_hits);
int total_number_of_matches = primary_matches.TrueCount;
if (primary_matches.TrueCount > max_results)
{
final_list_of_hits = ScanRecentDocs(primary_reader,
secondary_reader,
primary_matches,
hits_by_id,
max_results,
ref total_number_of_matches,
hit_filter,
index_name);
}
if (final_list_of_hits == null)
{
final_list_of_hits = FindRecentResults(primary_reader,
secondary_reader,
primary_matches,
hits_by_id,
max_results,
ref total_number_of_matches,
hit_filter,
index_name);
}
d.Start();
ScoreHits(hits_by_id, primary_reader, query_term_list);
hits_by_id = null;
d.Stop();
if (Debug)
{
Log.Debug(">>> {0}: Scored hits in {1}", index_name, d);
}
e.Start();
// 25 hits seems to be the sweet spot: anything lower
// and serialization overhead gets us, higher takes
// longer to send out.
const int MAX_QUEUED_HITS = 25;
int sent_index = 0;
// Break up the hits into reasonably sized chunks for
// sending over the wire.
for (int i = 0; i < final_list_of_hits.Count; ++i)
{
// Flush our hits
if (i > 0 && i % MAX_QUEUED_HITS == 0)
{
result.Add(final_list_of_hits.GetRange(0, MAX_QUEUED_HITS));
final_list_of_hits.RemoveRange(0, MAX_QUEUED_HITS);
i -= MAX_QUEUED_HITS;
}
}
// Flush the remaining hits
result.Add(final_list_of_hits, total_number_of_matches);
final_list_of_hits = null;
e.Stop();
if (Debug)
{
Log.Debug(">>> {0}: Hit filters executed and results sent in {1}", index_name, e);
}
total.Stop();
if (Debug)
{
Logger.Log.Debug(">>> {0}: GenerateQueryResults time statistics:", index_name);
//Logger.Log.Debug (">>> {0}: Short circuit {1,6} ({2:0.0}%)", index_name, a == null ? "N/A" : a.ToString (), a == null ? 0.0 : 100 * a.ElapsedTime / total.ElapsedTime);
//Logger.Log.Debug (">>> {0}: Create docs {1,6} ({2:0.0}%)", index_name, b, 100 * b.ElapsedTime / total.ElapsedTime);
//Logger.Log.Debug (">>> {0}: Hit assembly {1,6} ({2:0.0}%)", index_name, c, 100 * c.ElapsedTime / total.ElapsedTime);
Logger.Log.Debug(">>> {0}: Scored hits {1,6} ({2:0.0}%)", index_name, d, 100 * d.ElapsedTime / total.ElapsedTime);
Logger.Log.Debug(">>> {0}: Results sent {1,6} ({2:0.0}%)", index_name, e, 100 * e.ElapsedTime / total.ElapsedTime);
Logger.Log.Debug(">>> {0}: TOTAL {1,6}", index_name, total);
}
}
////////////////////////////////////////////////////////////////
public int DoCountMatchQuery (Query query, QueryPartHook query_part_hook)
{
if (Debug)
Logger.Log.Debug ("###### {0}: Starting low-level queries", IndexName);
Stopwatch total;
total = new Stopwatch ();
total.Start ();
ArrayList primary_required_part_queries;
ArrayList secondary_required_part_queries;
LNS.BooleanQuery primary_prohibited_part_query;
LNS.BooleanQuery secondary_prohibited_part_query;
AndHitFilter all_hit_filters;
ArrayList term_list;
term_list = AssembleQuery ( query,
query_part_hook,
null,
out primary_required_part_queries,
out secondary_required_part_queries,
out primary_prohibited_part_query,
out secondary_prohibited_part_query,
out all_hit_filters);
// If we have no required parts, give up.
if (primary_required_part_queries == null)
return 0;
IndexReader primary_reader;
LNS.IndexSearcher primary_searcher;
IndexReader secondary_reader;
LNS.IndexSearcher secondary_searcher;
if (! BuildSearchers (out primary_reader, out primary_searcher, out secondary_reader, out secondary_searcher))
return 0;
// Build whitelists and blacklists for search subsets.
LuceneBitArray primary_whitelist, secondary_whitelist;
CreateQueryWhitelists (null,
primary_searcher,
secondary_searcher,
primary_prohibited_part_query,
secondary_prohibited_part_query,
out primary_whitelist,
out secondary_whitelist);
// Now run the low level queries against our indexes.
BetterBitArray primary_matches = null;
if (primary_required_part_queries != null) {
if (secondary_searcher != null)
primary_matches = DoRequiredQueries_TwoIndex (primary_searcher,
secondary_searcher,
primary_required_part_queries,
secondary_required_part_queries,
primary_whitelist,
secondary_whitelist);
else
primary_matches = DoRequiredQueries (primary_searcher,
primary_required_part_queries,
primary_whitelist);
}
int result = 0;
// FIXME: Pass the count through uri-filter and other validation checks
if (primary_matches != null)
result = primary_matches.TrueCount;
CloseSearchers (primary_reader, primary_searcher, secondary_reader, secondary_searcher);
total.Stop ();
if (Debug)
Logger.Log.Debug ("###### {0}: Total query run in {1}", IndexName, total);
return result;
}
////////////////////////////////////////////////////////////////
public int DoCountMatchQuery(Query query, QueryPartHook query_part_hook)
{
if (Debug)
{
Logger.Log.Debug("###### {0}: Starting low-level queries", IndexName);
}
Stopwatch total;
total = new Stopwatch();
total.Start();
ArrayList primary_required_part_queries;
ArrayList secondary_required_part_queries;
LNS.BooleanQuery primary_prohibited_part_query;
LNS.BooleanQuery secondary_prohibited_part_query;
AndHitFilter all_hit_filters;
ArrayList term_list;
term_list = AssembleQuery(query,
query_part_hook,
null,
out primary_required_part_queries,
out secondary_required_part_queries,
out primary_prohibited_part_query,
out secondary_prohibited_part_query,
out all_hit_filters);
// If we have no required parts, give up.
if (primary_required_part_queries == null)
{
return(0);
}
IndexReader primary_reader;
LNS.IndexSearcher primary_searcher;
IndexReader secondary_reader;
LNS.IndexSearcher secondary_searcher;
if (!BuildSearchers(out primary_reader, out primary_searcher, out secondary_reader, out secondary_searcher))
{
return(0);
}
// Build whitelists and blacklists for search subsets.
LuceneBitArray primary_whitelist, secondary_whitelist;
CreateQueryWhitelists(null,
primary_searcher,
secondary_searcher,
primary_prohibited_part_query,
secondary_prohibited_part_query,
out primary_whitelist,
out secondary_whitelist);
// Now run the low level queries against our indexes.
BetterBitArray primary_matches = null;
if (primary_required_part_queries != null)
{
if (secondary_searcher != null)
{
primary_matches = DoRequiredQueries_TwoIndex(primary_searcher,
secondary_searcher,
primary_required_part_queries,
secondary_required_part_queries,
primary_whitelist,
secondary_whitelist);
}
else
{
primary_matches = DoRequiredQueries(primary_searcher,
primary_required_part_queries,
primary_whitelist);
}
}
int result = 0;
// FIXME: Pass the count through uri-filter and other validation checks
if (primary_matches != null)
{
result = primary_matches.TrueCount;
}
CloseSearchers(primary_reader, primary_searcher, secondary_reader, secondary_searcher);
total.Stop();
if (Debug)
{
Logger.Log.Debug("###### {0}: Total query run in {1}", IndexName, total);
}
return(result);
}
static void LaunchHelper()
{
// If we are in the process of shutting down, return immediately.
if (Shutdown.ShutdownRequested)
{
return;
}
lock (helper_lock) {
// If a helper appears to be running, return immediately.
if (CheckHelper())
{
return;
}
Logger.Log.Debug("Launching helper process");
SafeProcess p = new SafeProcess();
string[] args = new string [3];
args [0] = helper_path;
if (BeagrepDaemon.DisableTextCache)
{
args [1] = "--disable-text-cache";
}
else
{
args [1] = String.Empty;
}
if (Log.Level == LogLevel.Debug)
{
args [2] = "--debug";
}
else
{
args [2] = String.Empty;
}
p.Arguments = args;
p.RedirectStandardOutput = false;
p.RedirectStandardError = false;
p.Start();
Logger.Log.Debug("IndexHelper PID is {0}", p.Id);
// Poll the helper's socket. Wait up to a minute
// (500 ms * 120 times) for the helper to be ready
// to handle requests.
Stopwatch watch = new Stopwatch();
watch.Start();
int poll_count = 0;
bool found_helper;
do
{
Thread.Sleep(500);
++poll_count;
found_helper = CheckHelper();
} while (poll_count < 120 &&
!found_helper &&
!Shutdown.ShutdownRequested);
watch.Stop();
if (!found_helper)
{
throw new Exception(String.Format("Couldn't launch helper process {0}", p.Id));
}
Logger.Log.Debug("Found IndexHelper ({0}) in {1}", p.Id, watch);
helper_pid = p.Id;
}
}
public static bool StartupProcess ()
{
// Profile our initialization
Stopwatch stopwatch = new Stopwatch ();
stopwatch.Start ();
// Fire up our server
if (! StartServer ()) {
if (! arg_replace) {
Logger.Log.Error ("Could not set up the listener for beagrep requests. "
+ "There is probably another beagrepd instance running. "
+ "Use --replace to replace the running service");
Environment.Exit (1);
}
ReplaceExisting ();
}
// Set up out-of-process indexing
LuceneQueryable.IndexerHook = new LuceneQueryable.IndexerCreator (RemoteIndexer.NewRemoteIndexer);
Config config = Conf.Get (Conf.Names.DaemonConfig);
// Initialize synchronization to keep the indexes local if PathFinder.StorageDir
// is on a non-block device, or if BEAGREP_SYNCHRONIZE_LOCALLY is set
if ((! SystemInformation.IsPathOnBlockDevice (PathFinder.StorageDir) &&
config.GetOption (Conf.Names.IndexSynchronization, true)) ||
Environment.GetEnvironmentVariable ("BEAGREP_SYNCHRONIZE_LOCALLY") != null)
IndexSynchronization.Initialize ();
// Start the query driver.
Logger.Log.Debug ("Starting QueryDriver");
QueryDriver.Start ();
// Start our battery monitor so we can shut down the
// scheduler if needed.
BatteryMonitor.Init ();
bool initially_on_battery = ! BatteryMonitor.UsingAC && ! config.GetOption (Conf.Names.IndexOnBattery, false);
// Start the Global Scheduler thread
if (! arg_disable_scheduler) {
if (! initially_on_battery) {
Logger.Log.Debug ("Starting Scheduler thread");
Scheduler.Global.Start ();
} else {
Log.Debug ("Beagrep started on battery, not starting scheduler thread");
}
}
// Start our Inotify threads
Inotify.Start ();
// Test if the FileAdvise stuff is working: This will print a
// warning if not. The actual advice calls will fail silently.
FileAdvise.TestAdvise ();
#if ENABLE_AVAHI
zeroconf = new Beagrep.Daemon.Network.Zeroconf ();
#endif
Conf.WatchForUpdates ();
stopwatch.Stop ();
Logger.Log.Debug ("Daemon initialization finished after {0}", stopwatch);
SystemInformation.LogMemoryUsage ();
if (arg_indexing_test_mode) {
Thread.Sleep (1000); // Ugly paranoia: wait a second for the backends to settle.
Logger.Log.Debug ("Running in indexing test mode");
Scheduler.Global.EmptyQueueEvent += OnEmptySchedulerQueue;
Scheduler.Global.Add (null); // pulse the scheduler
}
return false;
}
private static ArrayList FindRecentResults (IndexReader primary_reader,
IndexReader secondary_reader,
BetterBitArray primary_matches,
Dictionary<int, Hit> hits_by_id,
int max_results,
ref int total_number_of_matches,
HitFilter hit_filter,
string index_name)
{
Stopwatch b = new Stopwatch ();
b.Start ();
int count = 0;
Document doc;
ArrayList all_docs = null;
TopScores top_docs = null;
TermDocs term_docs = null;
if (primary_matches.TrueCount > max_results)
top_docs = new TopScores (max_results);
else
all_docs = new ArrayList (primary_matches.TrueCount);
if (secondary_reader != null)
term_docs = secondary_reader.TermDocs ();
for (int match_index = primary_matches.Count; ; match_index --) {
// Walk across the matches backwards, since newer
// documents are more likely to be at the end of
// the index.
match_index = primary_matches.GetPreviousTrueIndex (match_index);
if (match_index < 0)
break;
count++;
doc = primary_reader.Document (match_index, fields_timestamp_uri);
// Check the timestamp --- if we have already reached our
// limit, we might be able to reject it immediately.
string timestamp_str;
long timestamp_num = 0;
timestamp_str = doc.Get ("Timestamp");
if (timestamp_str == null) {
Logger.Log.Warn ("No timestamp on {0}!", GetUriFromDocument (doc));
} else {
timestamp_num = Int64.Parse (doc.Get ("Timestamp"));
if (top_docs != null && ! top_docs.WillAccept (timestamp_num))
continue;
}
// Get the actual hit now
// doc was created with only 2 fields, so first get the complete lucene document for primary document.
// Also run our hit_filter now, if we have one. Since we insist of returning max_results
// most recent hits, any hits that would be filtered out should happen now and not later.
Hit hit = CreateHit (primary_reader.Document (match_index), secondary_reader, term_docs);
if (hit_filter != null && ! hit_filter (hit)) {
if (Debug)
Log.Debug ("Filtered out {0}", hit.Uri);
total_number_of_matches --;
continue;
}
hits_by_id [match_index] = hit;
// Add the document to the appropriate data structure.
// We use the timestamp_num as the score, so high
// scores correspond to more-recent timestamps.
if (all_docs != null)
all_docs.Add (hit);
else
top_docs.Add (timestamp_num, hit);
}
if (term_docs != null)
term_docs.Close ();
b.Stop ();
if (Debug)
Log.Debug (">>> {0}: Instantiated and scanned {1} documents in {2}", index_name, count, b);
if (all_docs != null) {
// Sort results before sending
all_docs.Sort ();
return all_docs;
} else {
return top_docs.TopScoringObjects;
}
}
private IndexerReceipt [] Flush_Unlocked (IndexerRequest request)
{
ArrayList receipt_queue;
receipt_queue = new ArrayList ();
IndexReader primary_reader, secondary_reader;
primary_reader = IndexReader.Open (PrimaryStore);
secondary_reader = IndexReader.Open (SecondaryStore);
// Step #1: Make our first pass over the list of
// indexables that make up our request. For each add
// or property change in the request, get the Lucene
// documents so we can move forward any persistent
// properties (for adds) or all old properties (for
// property changes).
//
// Then, for each add or remove in the request,
// delete the associated documents from the index.
// Note that we previously cached added documents so
// that we can move persistent properties forward.
// parent_child_old_props is double-nested hashtable (depth-2 tree)
// indexed by the parent uri, it stores another hashtable indexed by the (parent+child documents)
// FIXME: 2-level hashtable is a waste for any non-child document.
// Replace this by a better data structure.
Hashtable parent_child_old_props = UriFu.NewHashtable ();
TermDocs term_docs = secondary_reader.TermDocs ();
int delete_count = 0;
IEnumerable request_indexables = request.Indexables;
foreach (Indexable indexable in request_indexables) {
string uri_str = UriFu.UriToEscapedString (indexable.Uri);
Term term;
// Store the necessary properties from old documents for re-addition
if (indexable.Type == IndexableType.Add ||
indexable.Type == IndexableType.PropertyChange) {
term = new Term ("Uri", uri_str);
term_docs.Seek (term);
Hashtable this_parent_child_props = null;
if (term_docs.Next ()) {
this_parent_child_props = UriFu.NewHashtable ();
this_parent_child_props [indexable.Uri] = secondary_reader.Document (term_docs.Doc ());
parent_child_old_props [indexable.Uri] = this_parent_child_props;
}
term = new Term ("ParentUri", uri_str);
term_docs.Seek (term);
while (term_docs.Next ()) {
Document doc = secondary_reader.Document (term_docs.Doc ());
string child_uri_str = doc.Get ("Uri");
Uri child_uri = UriFu.EscapedStringToUri (child_uri_str);
// Any valid lucene document *should* have a Uri, so no need to check for null
// Store the child documents too, to save persistent-properties
// of child documents
this_parent_child_props [child_uri] = doc;
}
}
// Now remove (non-remove indexables will be re-added in next block)
Logger.Log.Debug ("-{0}", indexable.DisplayUri);
int num_delete = 0;
term = new Term ("Uri", uri_str);
// For property changes, only secondary index is modified
secondary_reader.DeleteDocuments (term);
// Now remove from everywhere else (if asked to remove or if asked to add, in which case
// we first remove and then add)
// So we also need to remove child documents
if (indexable.Type != IndexableType.PropertyChange) {
num_delete = primary_reader.DeleteDocuments (term);
// When we delete an indexable, also delete any children.
// FIXME: Shouldn't we also delete any children of children, etc.?
term = new Term ("ParentUri", uri_str);
num_delete += primary_reader.DeleteDocuments (term);
secondary_reader.DeleteDocuments (term);
}
// If this is a strict removal (and not a deletion that
// we are doing in anticipation of adding something back),
// queue up a removed receipt.
if (indexable.Type == IndexableType.Remove) {
IndexerRemovedReceipt r;
r = new IndexerRemovedReceipt (indexable.Id);
r.NumRemoved = num_delete;
receipt_queue.Add (r);
}
delete_count += num_delete;
}
term_docs.Close ();
if (HaveItemCount)
AdjustItemCount (-delete_count);
else
SetItemCount (primary_reader);
// We are now done with the readers, so we close them.
// And also free them. Somehow not freeing them is preventing them from
// GCed at all.
primary_reader.Close ();
primary_reader = null;
secondary_reader.Close ();
secondary_reader = null;
// FIXME: If we crash at exactly this point, we are in
// trouble. Items will have been dropped from the index
// without the proper replacements being added. We can
// hopefully fix this when we move to Lucene 2.1.
// Step #2: Make another pass across our list of indexables
// and write out any new documents.
if (text_cache != null)
text_cache.BeginTransaction ();
IndexWriter primary_writer, secondary_writer;
// FIXME: Lock obtain time-out can happen here; if that happens,
// an exception will be thrown and this method will break in the middle
// leaving IndexWriters unclosed! Same for any Lucene.Net-index modification
// methods.
primary_writer = new IndexWriter (PrimaryStore, IndexingAnalyzer, false);
secondary_writer = null;
foreach (Indexable indexable in request_indexables) {
// If shutdown has been started, break here
// FIXME: Some more processing will continue, a lot of them
// concerning receipts, but the daemon will anyway ignore receipts
// now, what is the fastest way to stop from here ?
if (Shutdown.ShutdownRequested) {
Log.Debug ("Shutdown initiated. Breaking while flushing indexables.");
break;
}
// Receipts for removes were generated in the
// previous block. Now we just have to remove
// items from the text cache.
if (indexable.Type == IndexableType.Remove) {
if (text_cache != null)
text_cache.Delete (indexable.Uri);
continue;
}
IndexerAddedReceipt r;
Hashtable prop_change_docs = (Hashtable) parent_child_old_props [indexable.Uri];
if (indexable.Type == IndexableType.PropertyChange) {
Logger.Log.Debug ("+{0} (props only)", indexable.DisplayUri);
r = new IndexerAddedReceipt (indexable.Id);
r.PropertyChangesOnly = true;
receipt_queue.Add (r);
Document doc;
if (prop_change_docs == null)
doc = null;
else
doc = (Document) prop_change_docs [indexable.Uri];
Document new_doc;
new_doc = RewriteDocument (doc, indexable);
// Write out the new document...
if (secondary_writer == null)
secondary_writer = new IndexWriter (SecondaryStore, IndexingAnalyzer, false);
secondary_writer.AddDocument (new_doc);
// Get child property change indexables...
ArrayList prop_change_indexables;
prop_change_indexables = GetChildPropertyChange (prop_change_docs, indexable);
// and store them; no need to delete them first, since they were already removed from the index
if (prop_change_indexables == null)
continue;
foreach (Indexable prop_change_indexable in prop_change_indexables) {
Log.Debug ("+{0} (props only, generated indexable)", prop_change_indexable.Uri);
doc = (Document) prop_change_docs [prop_change_indexable.Uri];
new_doc = RewriteDocument (doc, prop_change_indexable);
secondary_writer.AddDocument (new_doc);
}
continue; // ...and proceed to the next Indexable
}
// If we reach this point we know we are dealing with an IndexableType.Add
if (indexable.Type != IndexableType.Add)
throw new Exception ("When I said it was an IndexableType.Add, I meant it!");
r = AddIndexableToIndex (indexable, primary_writer, ref secondary_writer, prop_change_docs);
if (r != null)
receipt_queue.Add (r);
}
if (text_cache != null)
text_cache.CommitTransaction ();
if (Shutdown.ShutdownRequested) {
foreach (DeferredInfo di in deferred_indexables)
di.Cleanup ();
deferred_indexables.Clear ();
foreach (Indexable indexable in request_indexables)
indexable.Cleanup ();
primary_writer.Close ();
if (secondary_writer != null)
secondary_writer.Close ();
return null;
}
if (request.OptimizeIndex) {
Stopwatch watch = new Stopwatch ();
Logger.Log.Debug ("Optimizing {0}", IndexName);
watch.Start ();
primary_writer.Optimize ();
if (secondary_writer == null)
secondary_writer = new IndexWriter (SecondaryStore, IndexingAnalyzer, false);
secondary_writer.Optimize ();
watch.Stop ();
Logger.Log.Debug ("{0} optimized in {1}", IndexName, watch);
}
// Step #4. Close our writers and return the events to
// indicate what has happened.
primary_writer.Close ();
if (secondary_writer != null)
secondary_writer.Close ();
// Send a single IndexerIndexablesReceipt if there were deferred indexables
if (deferred_indexables.Count > 0) {
Log.Debug ("{0} indexables generated more indexables; asking daemon to schedule their indexing.", deferred_indexables.Count);
IndexerIndexablesReceipt r = new IndexerIndexablesReceipt ();
receipt_queue.Add (r);
}
IndexerReceipt [] receipt_array;
receipt_array = new IndexerReceipt [receipt_queue.Count];
for (int i = 0; i < receipt_queue.Count; ++i)
receipt_array [i] = (IndexerReceipt) receipt_queue [i];
return receipt_array;
}
// There are two ways we can determine the max_results
// most recent items:
//
// One is to instantiate Lucene documents for each of
// the document IDs in primary_matches. This is a
// fairly expensive operation.
//
// The other is to walk through the list of all
// document IDs in descending time order. This is
// a less expensive operation, but adds up over time
// on large data sets.
//
// We can walk about 2.5 docs for every Document we
// instantiate. So what we'll do, if we have more
// matches than available hits, is walk (m * 1.25)
// docs to see if we can fill out the top 100 hits.
// If not, we'll fall back to creating documents
// for all of them.
private static ArrayList ScanRecentDocs (IndexReader primary_reader,
IndexReader secondary_reader,
BetterBitArray primary_matches,
Dictionary<int, Hit> hits_by_id,
int max_results,
ref int total_number_of_matches,
HitFilter hit_filter,
string index_name)
{
Stopwatch a = new Stopwatch ();
a.Start ();
TermDocs docs = primary_reader.TermDocs ();
TermEnum enumerator = primary_reader.Terms (new Term ("InvertedTimestamp", String.Empty));
ArrayList results = new ArrayList (max_results);
int docs_found = 0;
int docs_walked = 0;
int hit_filter_removed = 0;
int max_docs = (int) (primary_matches.TrueCount * 1.25);
Term term;
TermDocs secondary_term_docs = null;
if (secondary_reader != null)
secondary_term_docs = secondary_reader.TermDocs ();
do {
term = enumerator.Term ();
if (term.Field () != "InvertedTimestamp")
break;
docs.Seek (enumerator);
while (docs.Next ()
&& docs_found < max_results
&& docs_walked < max_docs) {
int doc_id = docs.Doc ();
if (primary_matches.Get (doc_id)) {
Document doc = primary_reader.Document (doc_id);
Hit hit = CreateHit (doc, secondary_reader, secondary_term_docs);
// If we have a HitFilter, apply it.
if (hit_filter != null && ! hit_filter (hit)) {
if (Debug)
Log.Debug ("Filtered out {0}", hit.Uri);
hit_filter_removed ++;
continue;
}
hits_by_id [doc_id] = hit;
// Add the result, last modified first
results.Add (hit);
docs_found++;
}
docs_walked++;
}
} while (enumerator.Next ()
&& docs_found < max_results
&& docs_walked < max_docs);
docs.Close ();
if (secondary_term_docs != null)
secondary_term_docs.Close ();
// If we've found all the docs we can return in a subset!
// Fantastic, we've probably short circuited a slow search.
if (docs_found != max_results) {
// Otherwise bad luck! Not all docs found
// Start afresh - this time traversing all results
results = null;
} else {
// Adjust total_number_of_matches. We need to do this to avoid scenarios like the following:
// max_hits = 100. Matched 100 results. But hit filter removed 30. So 70 results will be returned.
// We want to avoid saying "Showing top 70 of 100". Note that since we are not passing
// every document in the index through the hit_filter, when we say "Showing top 100 of 1234", the
// 1234 could actually be much less. But since max_hits was 100, that will not mislead the user.
total_number_of_matches -= hit_filter_removed;
}
a.Stop ();
if (Debug) {
Log.Debug (">>> {0}: Walked {1} items, populated an enum with {2} items in {3}", index_name, docs_walked, docs_found, a);
if (docs_found == max_results)
Log.Debug (">>> {0}: Successfully short circuited timestamp ordering!", index_name);
}
return results;
}
private static void GenerateQueryResults (IndexReader primary_reader,
IndexReader secondary_reader,
BetterBitArray primary_matches,
IQueryResult result,
ICollection query_term_list,
int max_results,
HitFilter hit_filter,
string index_name)
{
int num_hits;
if (Debug)
Logger.Log.Debug (">>> {0}: Initially handed {1} matches", index_name, primary_matches.TrueCount);
if (primary_matches.TrueCount <= max_results) {
if (Debug)
Logger.Log.Debug (">>> {0}: Initial count is within our limit of {1}", index_name, max_results);
num_hits = primary_matches.TrueCount;
} else {
if (Debug)
Logger.Log.Debug (">>> {0}: Number of hits is capped at {1}", index_name, max_results);
num_hits = max_results;
}
Stopwatch total, d, e;
total = new Stopwatch ();
d = new Stopwatch ();
e = new Stopwatch ();
total.Start ();
ArrayList final_list_of_hits = null;
// This is used only for scoring
Dictionary<int, Hit> hits_by_id = new Dictionary<int, Hit> (num_hits);
int total_number_of_matches = primary_matches.TrueCount;
if (primary_matches.TrueCount > max_results)
final_list_of_hits = ScanRecentDocs (primary_reader,
secondary_reader,
primary_matches,
hits_by_id,
max_results,
ref total_number_of_matches,
hit_filter,
index_name);
if (final_list_of_hits == null)
final_list_of_hits = FindRecentResults (primary_reader,
secondary_reader,
primary_matches,
hits_by_id,
max_results,
ref total_number_of_matches,
hit_filter,
index_name);
d.Start ();
ScoreHits (hits_by_id, primary_reader, query_term_list);
hits_by_id = null;
d.Stop ();
if (Debug)
Log.Debug (">>> {0}: Scored hits in {1}", index_name, d);
e.Start ();
// 25 hits seems to be the sweet spot: anything lower
// and serialization overhead gets us, higher takes
// longer to send out.
const int MAX_QUEUED_HITS = 25;
int sent_index = 0;
// Break up the hits into reasonably sized chunks for
// sending over the wire.
for (int i = 0; i < final_list_of_hits.Count; ++i) {
// Flush our hits
if (i > 0 && i % MAX_QUEUED_HITS == 0) {
result.Add (final_list_of_hits.GetRange (0, MAX_QUEUED_HITS));
final_list_of_hits.RemoveRange (0, MAX_QUEUED_HITS);
i -= MAX_QUEUED_HITS;
}
}
// Flush the remaining hits
result.Add (final_list_of_hits, total_number_of_matches);
final_list_of_hits = null;
e.Stop ();
if (Debug)
Log.Debug (">>> {0}: Hit filters executed and results sent in {1}", index_name, e);
total.Stop ();
if (Debug) {
Logger.Log.Debug (">>> {0}: GenerateQueryResults time statistics:", index_name);
//Logger.Log.Debug (">>> {0}: Short circuit {1,6} ({2:0.0}%)", index_name, a == null ? "N/A" : a.ToString (), a == null ? 0.0 : 100 * a.ElapsedTime / total.ElapsedTime);
//Logger.Log.Debug (">>> {0}: Create docs {1,6} ({2:0.0}%)", index_name, b, 100 * b.ElapsedTime / total.ElapsedTime);
//Logger.Log.Debug (">>> {0}: Hit assembly {1,6} ({2:0.0}%)", index_name, c, 100 * c.ElapsedTime / total.ElapsedTime);
Logger.Log.Debug (">>> {0}: Scored hits {1,6} ({2:0.0}%)", index_name, d, 100 * d.ElapsedTime / total.ElapsedTime);
Logger.Log.Debug (">>> {0}: Results sent {1,6} ({2:0.0}%)", index_name, e, 100 * e.ElapsedTime / total.ElapsedTime);
Logger.Log.Debug (">>> {0}: TOTAL {1,6}", index_name, total);
}
}
////////////////////////////////////////////////////////////////
public void DoQuery (Query query,
IQueryResult result,
ICollection search_subset_uris, // should be internal uris
QueryPartHook query_part_hook,
HitFilter hit_filter)
{
if (Debug)
Logger.Log.Debug ("###### {0}: Starting low-level queries", IndexName);
Stopwatch total, a, b, c, d, e, f;
total = new Stopwatch ();
a = new Stopwatch ();
b = new Stopwatch ();
c = new Stopwatch ();
d = new Stopwatch ();
e = new Stopwatch ();
f = new Stopwatch ();
total.Start ();
a.Start ();
ArrayList primary_required_part_queries;
ArrayList secondary_required_part_queries;
LNS.BooleanQuery primary_prohibited_part_query;
LNS.BooleanQuery secondary_prohibited_part_query;
AndHitFilter all_hit_filters;
ArrayList term_list;
// Assemble all of the parts into a bunch of Lucene queries
term_list = AssembleQuery (query,
query_part_hook,
hit_filter,
out primary_required_part_queries,
out secondary_required_part_queries,
out primary_prohibited_part_query,
out secondary_prohibited_part_query,
out all_hit_filters);
a.Stop ();
if (Debug)
Log.Debug ("###### {0}: Building queries took {1}", IndexName, a);
// If we have no required parts, give up.
if (primary_required_part_queries == null)
return;
b.Start ();
//
// Now that we have all of these nice queries, let's execute them!
//
IndexReader primary_reader;
LNS.IndexSearcher primary_searcher;
IndexReader secondary_reader;
LNS.IndexSearcher secondary_searcher;
// Create the searchers that we will need.
if (! BuildSearchers (out primary_reader, out primary_searcher, out secondary_reader, out secondary_searcher))
return;
b.Stop ();
if (Debug)
Log.Debug ("###### {0}: Readers/searchers built in {1}", IndexName, b);
// Build whitelists and blacklists for search subsets.
c.Start ();
// Possibly create our whitelists from the search subset.
LuceneBitArray primary_whitelist, secondary_whitelist;
CreateQueryWhitelists (search_subset_uris,
primary_searcher,
secondary_searcher,
primary_prohibited_part_query,
secondary_prohibited_part_query,
out primary_whitelist,
out secondary_whitelist);
c.Stop ();
if (Debug)
Log.Debug ("###### {0}: Whitelists and blacklists built in {1}", IndexName, c);
// Now run the low level queries against our indexes.
d.Start ();
BetterBitArray primary_matches = null;
if (primary_required_part_queries != null) {
if (secondary_searcher != null)
primary_matches = DoRequiredQueries_TwoIndex (primary_searcher,
secondary_searcher,
primary_required_part_queries,
secondary_required_part_queries,
primary_whitelist,
secondary_whitelist);
else
primary_matches = DoRequiredQueries (primary_searcher,
primary_required_part_queries,
primary_whitelist);
}
d.Stop ();
if (Debug)
Logger.Log.Debug ("###### {0}: Low-level queries finished in {1}", IndexName, d);
e.Start ();
// Only generate results if we got some matches
if (primary_matches != null && primary_matches.ContainsTrue ()) {
GenerateQueryResults (primary_reader,
secondary_reader,
primary_matches,
result,
term_list,
query.MaxHits,
new HitFilter (all_hit_filters.HitFilter),
IndexName);
}
e.Stop ();
if (Debug)
Log.Debug ("###### {0}: Query results generated in {1}", IndexName, e);
//
// Finally, we clean up after ourselves.
//
f.Start ();
CloseSearchers (primary_reader, primary_searcher, secondary_reader, secondary_searcher);
f.Stop ();
if (Debug)
Log.Debug ("###### {0}: Readers/searchers released in {1}", IndexName, f);
total.Stop ();
if (Debug) {
Log.Debug ("###### {0}: Query time breakdown:", IndexName);
Log.Debug ("###### {0}: Build queries {1,6} ({2:0.0}%)", IndexName, a, 100 * a.ElapsedTime / total.ElapsedTime);
Log.Debug ("###### {0}: Got readers {1,6} ({2:0.0}%)", IndexName, b, 100 * b.ElapsedTime / total.ElapsedTime);
Log.Debug ("###### {0}: Whitelists {1,6} ({2:0.0}%)", IndexName, c, 100 * c.ElapsedTime / total.ElapsedTime);
Log.Debug ("###### {0}: Queries {1,6} ({2:0.0}%)", IndexName, d, 100 * d.ElapsedTime / total.ElapsedTime);
Log.Debug ("###### {0}: Gen'd Results {1,6} ({2:0.0}%)", IndexName, e, 100 * e.ElapsedTime / total.ElapsedTime);
Log.Debug ("###### {0}: Reader cleanup {1,6} ({2:0.0}%)", IndexName, f, 100 * f.ElapsedTime / total.ElapsedTime);
Log.Debug ("###### {0}: TOTAL {1,6}", IndexName, total);
Logger.Log.Debug ("###### {0}: Total query run in {1}", IndexName, total);
}
}
public static bool StartupProcess()
{
// Profile our initialization
Stopwatch stopwatch = new Stopwatch();
stopwatch.Start();
// Fire up our server
if (!StartServer())
{
if (!arg_replace)
{
Logger.Log.Error("Could not set up the listener for beagrep requests. "
+ "There is probably another beagrepd instance running. "
+ "Use --replace to replace the running service");
Environment.Exit(1);
}
ReplaceExisting();
}
// Set up out-of-process indexing
LuceneQueryable.IndexerHook = new LuceneQueryable.IndexerCreator(RemoteIndexer.NewRemoteIndexer);
Config config = Conf.Get(Conf.Names.DaemonConfig);
// Initialize synchronization to keep the indexes local if PathFinder.StorageDir
// is on a non-block device, or if BEAGREP_SYNCHRONIZE_LOCALLY is set
if ((!SystemInformation.IsPathOnBlockDevice(PathFinder.StorageDir) &&
config.GetOption(Conf.Names.IndexSynchronization, true)) ||
Environment.GetEnvironmentVariable("BEAGREP_SYNCHRONIZE_LOCALLY") != null)
{
IndexSynchronization.Initialize();
}
// Start the query driver.
Logger.Log.Debug("Starting QueryDriver");
QueryDriver.Start();
// Start our battery monitor so we can shut down the
// scheduler if needed.
BatteryMonitor.Init();
bool initially_on_battery = !BatteryMonitor.UsingAC && !config.GetOption(Conf.Names.IndexOnBattery, false);
// Start the Global Scheduler thread
if (!arg_disable_scheduler)
{
if (!initially_on_battery)
{
Logger.Log.Debug("Starting Scheduler thread");
Scheduler.Global.Start();
}
else
{
Log.Debug("Beagrep started on battery, not starting scheduler thread");
}
}
// Start our Inotify threads
Inotify.Start();
// Test if the FileAdvise stuff is working: This will print a
// warning if not. The actual advice calls will fail silently.
FileAdvise.TestAdvise();
#if ENABLE_AVAHI
zeroconf = new Beagrep.Daemon.Network.Zeroconf();
#endif
Conf.WatchForUpdates();
stopwatch.Stop();
Logger.Log.Debug("Daemon initialization finished after {0}", stopwatch);
SystemInformation.LogMemoryUsage();
if (arg_indexing_test_mode)
{
Thread.Sleep(1000); // Ugly paranoia: wait a second for the backends to settle.
Logger.Log.Debug("Running in indexing test mode");
Scheduler.Global.EmptyQueueEvent += OnEmptySchedulerQueue;
Scheduler.Global.Add(null); // pulse the scheduler
}
return(false);
}
// There are two ways we can determine the max_results
// most recent items:
//
// One is to instantiate Lucene documents for each of
// the document IDs in primary_matches. This is a
// fairly expensive operation.
//
// The other is to walk through the list of all
// document IDs in descending time order. This is
// a less expensive operation, but adds up over time
// on large data sets.
//
// We can walk about 2.5 docs for every Document we
// instantiate. So what we'll do, if we have more
// matches than available hits, is walk (m * 1.25)
// docs to see if we can fill out the top 100 hits.
// If not, we'll fall back to creating documents
// for all of them.
private static ArrayList ScanRecentDocs(IndexReader primary_reader,
IndexReader secondary_reader,
BetterBitArray primary_matches,
Dictionary <int, Hit> hits_by_id,
int max_results,
ref int total_number_of_matches,
HitFilter hit_filter,
string index_name)
{
Stopwatch a = new Stopwatch();
a.Start();
TermDocs docs = primary_reader.TermDocs();
TermEnum enumerator = primary_reader.Terms(new Term("InvertedTimestamp", String.Empty));
ArrayList results = new ArrayList(max_results);
int docs_found = 0;
int docs_walked = 0;
int hit_filter_removed = 0;
int max_docs = (int)(primary_matches.TrueCount * 1.25);
Term term;
TermDocs secondary_term_docs = null;
if (secondary_reader != null)
{
secondary_term_docs = secondary_reader.TermDocs();
}
do
{
term = enumerator.Term();
if (term.Field() != "InvertedTimestamp")
{
break;
}
docs.Seek(enumerator);
while (docs.Next() &&
docs_found < max_results &&
docs_walked < max_docs)
{
int doc_id = docs.Doc();
if (primary_matches.Get(doc_id))
{
Document doc = primary_reader.Document(doc_id);
Hit hit = CreateHit(doc, secondary_reader, secondary_term_docs);
// If we have a HitFilter, apply it.
if (hit_filter != null && !hit_filter(hit))
{
if (Debug)
{
Log.Debug("Filtered out {0}", hit.Uri);
}
hit_filter_removed++;
continue;
}
hits_by_id [doc_id] = hit;
// Add the result, last modified first
results.Add(hit);
docs_found++;
}
docs_walked++;
}
} while (enumerator.Next() &&
docs_found < max_results &&
docs_walked < max_docs);
docs.Close();
if (secondary_term_docs != null)
{
secondary_term_docs.Close();
}
// If we've found all the docs we can return in a subset!
// Fantastic, we've probably short circuited a slow search.
if (docs_found != max_results)
{
// Otherwise bad luck! Not all docs found
// Start afresh - this time traversing all results
results = null;
}
else
{
// Adjust total_number_of_matches. We need to do this to avoid scenarios like the following:
// max_hits = 100. Matched 100 results. But hit filter removed 30. So 70 results will be returned.
// We want to avoid saying "Showing top 70 of 100". Note that since we are not passing
// every document in the index through the hit_filter, when we say "Showing top 100 of 1234", the
// 1234 could actually be much less. But since max_hits was 100, that will not mislead the user.
total_number_of_matches -= hit_filter_removed;
}
a.Stop();
if (Debug)
{
Log.Debug(">>> {0}: Walked {1} items, populated an enum with {2} items in {3}", index_name, docs_walked, docs_found, a);
if (docs_found == max_results)
{
Log.Debug(">>> {0}: Successfully short circuited timestamp ordering!", index_name);
}
}
return(results);
}
static void DoMain (string [] args)
{
SystemInformation.SetProcessName ("beagrep-build-index");
if (args.Length < 2)
PrintUsage ();
ArrayList allowed_patterns = new ArrayList ();
ArrayList denied_patterns = new ArrayList ();
ArrayList denied_dir_patterns = new ArrayList ();
int i = 0;
while (i < args.Length) {
string arg = args [i];
++i;
string next_arg = i < args.Length ? args [i] : null;
switch (arg) {
case "-h":
case "--help":
PrintUsage ();
break;
case "--tag":
if (next_arg != null)
arg_tag = next_arg;
++i;
break;
case "-r":
case "--recursive":
arg_recursive = true;
break;
case "--enable-deletion":
arg_delete = true;
break;
case "--disable-directories":
arg_disable_directories = true;
break;
case "--enable-text-cache":
arg_cache_text = true;
break;
case "--target":
if (next_arg != null)
arg_output = Path.IsPathRooted (next_arg) ? next_arg : Path.GetFullPath (next_arg);
++i;
break;
case "--disable-filtering":
arg_disable_filtering = true;
break;
case "--allow-pattern":
if (next_arg == null)
break;
if (next_arg.IndexOf (',') != -1) {
foreach (string pattern in next_arg.Split (','))
allowed_patterns.Add (pattern);
} else {
allowed_patterns.Add (next_arg);
}
++i;
break;
case "--deny-directory-pattern":
if (next_arg == null)
break;
if (next_arg.IndexOf (',') != -1) {
foreach (string pattern in next_arg.Split (','))
denied_dir_patterns.Add (pattern);
} else {
denied_dir_patterns.Add (next_arg);
}
++i;
break;
case "--deny-pattern":
if (next_arg == null)
break;
if (next_arg.IndexOf (',') != -1) {
foreach (string pattern in next_arg.Split (','))
denied_patterns.Add (pattern);
} else {
denied_patterns.Add (next_arg);
}
++i;
break;
case "--disable-restart":
arg_disable_restart = true;
break;
case "--source":
if (next_arg == null)
break;
arg_source = next_arg;
++i;
break;
default:
if (arg.StartsWith ("-") || arg.StartsWith ("--"))
PrintUsage ();
string path = Path.IsPathRooted (arg) ? arg : Path.GetFullPath (arg);
if (path != "/" && path.EndsWith ("/"))
path = path.TrimEnd ('/');
if (Directory.Exists (path))
pending_directories.Enqueue (new DirectoryInfo (path));
else if (File.Exists (path))
pending_files.Enqueue (new FileInfo (path));
break;
}
}
/////////////////////////////////////////////////////////
if (arg_output == null) {
Logger.Log.Error ("--target must be specified");
Environment.Exit (1);
}
// Set the storage dir, this should be used to store log messages
// and filterver.dat
PathFinder.StorageDir = arg_output;
foreach (FileSystemInfo info in pending_directories) {
if (Path.GetFullPath (arg_output) == info.FullName) {
Logger.Log.Error ("Target directory cannot be one of the source paths.");
Environment.Exit (1);
}
}
foreach (FileSystemInfo info in pending_files) {
if (Path.GetFullPath (arg_output) == info.FullName) {
Logger.Log.Error ("Target directory cannot be one of the source paths.");
Environment.Exit (1);
}
}
if (!Directory.Exists (Path.GetDirectoryName (arg_output))) {
Logger.Log.Error ("Index directory not available for construction: {0}", arg_output);
Environment.Exit (1);
}
// Be *EXTRA PARANOID* about the contents of the target
// directory, because creating an indexing driver will
// nuke it.
if (Directory.Exists (arg_output)) {
foreach (FileInfo info in DirectoryWalker.GetFileInfos (arg_output)) {
if (Array.IndexOf (allowed_files, info.Name) == -1) {
Logger.Log.Error ("{0} doesn't look safe to delete: non-Beagrep file {1} was found", arg_output, info.FullName);
Environment.Exit (1);
}
}
foreach (DirectoryInfo info in DirectoryWalker.GetDirectoryInfos (arg_output)) {
if (Array.IndexOf (allowed_dirs, info.Name) == -1) {
Logger.Log.Error ("{0} doesn't look safe to delete: non-Beagrep directory {1} was found", arg_output, info.FullName);
Environment.Exit (1);
}
}
}
string config_file_path = Path.Combine (arg_output, "StaticIndex.xml");
string prev_source = null;
if (File.Exists (config_file_path)) {
Config static_index_config = Conf.LoadFrom (config_file_path);
if (static_index_config == null) {
Log.Error ("Invalid configuation file {0}", config_file_path);
Environment.Exit (1);
}
prev_source = static_index_config.GetOption ("Source", null);
if (arg_source != null && prev_source != arg_source) {
Log.Error ("Source already set to {0} for existing static index. Cannot set source to {1}.", prev_source, arg_source);
Environment.Exit (1);
}
// If arg_source is not given, and prev_source is present, use prev_source
// as the arg_source. This is useful for re-running build-index without
// giving --arg_source for already existing static index
arg_source = prev_source;
}
if (arg_source == null) {
DirectoryInfo dir = new DirectoryInfo (StringFu.SanitizePath (arg_output));
arg_source = dir.Name;
}
string global_files_config = Path.Combine (PathFinder.ConfigDataDir, "config-files");
global_files_config = Path.Combine (global_files_config, Conf.Names.FilesQueryableConfig + ".xml");
if (! File.Exists (global_files_config)) {
Log.Error ("Global configuration file not found {0}", global_files_config);
Environment.Exit (0);
}
// Setup regexes for allowed/denied patterns
if (allowed_patterns.Count > 0) {
allowed_regex = StringFu.GetPatternRegex (allowed_patterns);
} else {
// Read the exclude values from config
// For system-wide indexes, only the global config value will be used
Config config = Conf.Get (Conf.Names.FilesQueryableConfig);
List<string[]> values = config.GetListOptionValues (Conf.Names.ExcludePattern);
if (values != null)
foreach (string[] exclude in values)
denied_patterns.Add (exclude [0]);
if (denied_patterns.Count > 0)
denied_regex = StringFu.GetPatternRegex (denied_patterns);
}
if (denied_dir_patterns.Count > 0) {
denied_dir_regex = StringFu.GetPatternRegex (denied_dir_patterns);
Log.Always("Will ignore directories matching regular expression: {0}", denied_dir_regex);
}
Log.Always ("Starting beagrep-build-index (pid {0}) at {1}", Process.GetCurrentProcess ().Id, DateTime.Now);
driver = new LuceneIndexingDriver (arg_output, MINOR_VERSION, false);
driver.TextCache = (arg_cache_text) ? new TextCache (arg_output) : null;
if (driver.TextCache != null)
driver.TextCache.WorldReadable = true;
backing_fa_store = new FileAttributesStore_Sqlite (driver.TopDirectory, driver.Fingerprint);
fa_store = new FileAttributesStore (backing_fa_store);
// Set up signal handlers
#if MONO_1_9
Shutdown.SetupSignalHandlers (delegate (int signal)
{
if (signal == (int) Mono.Unix.Native.Signum.SIGINT ||
signal == (int) Mono.Unix.Native.Signum.SIGTERM)
Shutdown.BeginShutdown ();
});
#else
SetupSignalHandlers ();
#endif
Thread monitor_thread = null;
Stopwatch watch = new Stopwatch ();
watch.Start ();
if (!arg_disable_restart) {
// Start the thread that monitors memory usage.
monitor_thread = ExceptionHandlingThread.Start (new ThreadStart (MemoryMonitorWorker));
}
// Start indexworker to do the crawling and indexing
IndexWorker ();
// Join any threads so that we know that we're the only thread still running
if (monitor_thread != null)
monitor_thread.Join ();
watch.Stop ();
Logger.Log.Debug ("Elapsed time {0}.", watch);
// Write this after indexing is done. This is because, if creating a new index,
// LuceneIndexingDriver.Create() is called which purges the entire directory.
if (prev_source == null) {
Config static_index_config = Conf.LoadNew ("StaticIndex.xml");
// Write StaticIndex.xml containing:
// The name of the source
static_index_config.SetOption ("Source", arg_source);
static_index_config ["Source"].Description = "Source of the static index";
Conf.SaveTo (static_index_config, config_file_path);
}
if (restart) {
Logger.Log.Debug ("Restarting beagrep-build-index");
Process p = new Process ();
p.StartInfo.UseShellExecute = false;
// FIXME: Maybe this isn't the right way to do things? It should be ok,
// the PATH is inherited from the shell script which runs mono itself.
p.StartInfo.FileName = "mono";
p.StartInfo.Arguments = String.Join (" ", Environment.GetCommandLineArgs ());
p.Start ();
}
Log.Always ("Exiting beagrep-build-index (pid {0}) at {1}", Process.GetCurrentProcess ().Id, DateTime.Now);
}
private static ArrayList FindRecentResults(IndexReader primary_reader,
IndexReader secondary_reader,
BetterBitArray primary_matches,
Dictionary <int, Hit> hits_by_id,
int max_results,
ref int total_number_of_matches,
HitFilter hit_filter,
string index_name)
{
Stopwatch b = new Stopwatch();
b.Start();
int count = 0;
Document doc;
ArrayList all_docs = null;
TopScores top_docs = null;
TermDocs term_docs = null;
if (primary_matches.TrueCount > max_results)
{
top_docs = new TopScores(max_results);
}
else
{
all_docs = new ArrayList(primary_matches.TrueCount);
}
if (secondary_reader != null)
{
term_docs = secondary_reader.TermDocs();
}
for (int match_index = primary_matches.Count; ; match_index--)
{
// Walk across the matches backwards, since newer
// documents are more likely to be at the end of
// the index.
match_index = primary_matches.GetPreviousTrueIndex(match_index);
if (match_index < 0)
{
break;
}
count++;
doc = primary_reader.Document(match_index, fields_timestamp_uri);
// Check the timestamp --- if we have already reached our
// limit, we might be able to reject it immediately.
string timestamp_str;
long timestamp_num = 0;
timestamp_str = doc.Get("Timestamp");
if (timestamp_str == null)
{
Logger.Log.Warn("No timestamp on {0}!", GetUriFromDocument(doc));
}
else
{
timestamp_num = Int64.Parse(doc.Get("Timestamp"));
if (top_docs != null && !top_docs.WillAccept(timestamp_num))
{
continue;
}
}
// Get the actual hit now
// doc was created with only 2 fields, so first get the complete lucene document for primary document.
// Also run our hit_filter now, if we have one. Since we insist of returning max_results
// most recent hits, any hits that would be filtered out should happen now and not later.
Hit hit = CreateHit(primary_reader.Document(match_index), secondary_reader, term_docs);
if (hit_filter != null && !hit_filter(hit))
{
if (Debug)
{
Log.Debug("Filtered out {0}", hit.Uri);
}
total_number_of_matches--;
continue;
}
hits_by_id [match_index] = hit;
// Add the document to the appropriate data structure.
// We use the timestamp_num as the score, so high
// scores correspond to more-recent timestamps.
if (all_docs != null)
{
all_docs.Add(hit);
}
else
{
top_docs.Add(timestamp_num, hit);
}
}
if (term_docs != null)
{
term_docs.Close();
}
b.Stop();
if (Debug)
{
Log.Debug(">>> {0}: Instantiated and scanned {1} documents in {2}", index_name, count, b);
}
if (all_docs != null)
{
// Sort results before sending
all_docs.Sort();
return(all_docs);
}
else
{
return(top_docs.TopScoringObjects);
}
}
protected bool Exists ()
{
if (! (Directory.Exists (top_dir)
&& File.Exists (VersionFile)
&& File.Exists (FingerprintFile)
&& Directory.Exists (PrimaryIndexDirectory)
&& IndexReader.IndexExists (PrimaryIndexDirectory)
&& Directory.Exists (SecondaryIndexDirectory)
&& IndexReader.IndexExists (SecondaryIndexDirectory)
&& Directory.Exists (LockDirectory)))
return false;
// Check the index's version number. If it is wrong,
// declare the index non-existent.
StreamReader version_reader;
string version_str;
version_reader = new StreamReader (VersionFile);
version_str = version_reader.ReadLine ();
version_reader.Close ();
int current_major_version, current_minor_version;
int i = version_str.IndexOf ('.');
try {
if (i != -1) {
current_major_version = Convert.ToInt32 (version_str.Substring (0, i));
current_minor_version = Convert.ToInt32 (version_str.Substring (i+1));
} else {
current_minor_version = Convert.ToInt32 (version_str);
current_major_version = 0;
}
} catch (FormatException) {
// Something wrong with the version file.
return false;
}
if (current_major_version != MAJOR_VERSION
|| (minor_version >= 0 && current_minor_version != minor_version)) {
Logger.Log.Debug ("Version mismatch in {0}", index_name);
Logger.Log.Debug ("Index has version {0}.{1}, expected {2}.{3}",
current_major_version, current_minor_version,
MAJOR_VERSION, minor_version);
return false;
}
// Check the lock directory: If there is a dangling write lock,
// assume that the index is corrupted and declare it non-existent.
DirectoryInfo lock_dir_info;
lock_dir_info = new DirectoryInfo (LockDirectory);
bool dangling_lock = false;
foreach (FileInfo info in lock_dir_info.GetFiles ()) {
if (IsDanglingLock (info)) {
Logger.Log.Warn ("Found a dangling index lock on {0}.", info.FullName);
dangling_lock = true;
}
}
if (dangling_lock) {
Beagrep.Util.Stopwatch w = new Beagrep.Util.Stopwatch ();
w.Start ();
if (VerifyLuceneIndex (PrimaryIndexDirectory) &&
VerifyLuceneIndex (SecondaryIndexDirectory)) {
w.Stop ();
Log.Warn ("Indexes verified in {0}. Deleting stale lock files.", w);
try {
foreach (FileInfo info in lock_dir_info.GetFiles ())
info.Delete ();
} catch {
Log.Warn ("Could not delete lock files.");
return false;
}
return true;
} else
return false;
}
return true;
}
private IndexerReceipt [] Flush_Unlocked(IndexerRequest request)
{
ArrayList receipt_queue;
receipt_queue = new ArrayList();
IndexReader primary_reader, secondary_reader;
primary_reader = IndexReader.Open(PrimaryStore);
secondary_reader = IndexReader.Open(SecondaryStore);
// Step #1: Make our first pass over the list of
// indexables that make up our request. For each add
// or property change in the request, get the Lucene
// documents so we can move forward any persistent
// properties (for adds) or all old properties (for
// property changes).
//
// Then, for each add or remove in the request,
// delete the associated documents from the index.
// Note that we previously cached added documents so
// that we can move persistent properties forward.
// parent_child_old_props is double-nested hashtable (depth-2 tree)
// indexed by the parent uri, it stores another hashtable indexed by the (parent+child documents)
// FIXME: 2-level hashtable is a waste for any non-child document.
// Replace this by a better data structure.
Hashtable parent_child_old_props = UriFu.NewHashtable();
TermDocs term_docs = secondary_reader.TermDocs();
int delete_count = 0;
IEnumerable request_indexables = request.Indexables;
foreach (Indexable indexable in request_indexables)
{
string uri_str = UriFu.UriToEscapedString(indexable.Uri);
Term term;
// Store the necessary properties from old documents for re-addition
if (indexable.Type == IndexableType.Add ||
indexable.Type == IndexableType.PropertyChange)
{
term = new Term("Uri", uri_str);
term_docs.Seek(term);
Hashtable this_parent_child_props = null;
if (term_docs.Next())
{
this_parent_child_props = UriFu.NewHashtable();
this_parent_child_props [indexable.Uri] = secondary_reader.Document(term_docs.Doc());
parent_child_old_props [indexable.Uri] = this_parent_child_props;
}
term = new Term("ParentUri", uri_str);
term_docs.Seek(term);
while (term_docs.Next())
{
Document doc = secondary_reader.Document(term_docs.Doc());
string child_uri_str = doc.Get("Uri");
Uri child_uri = UriFu.EscapedStringToUri(child_uri_str);
// Any valid lucene document *should* have a Uri, so no need to check for null
// Store the child documents too, to save persistent-properties
// of child documents
this_parent_child_props [child_uri] = doc;
}
}
// Now remove (non-remove indexables will be re-added in next block)
Logger.Log.Debug("-{0}", indexable.DisplayUri);
int num_delete = 0;
term = new Term("Uri", uri_str);
// For property changes, only secondary index is modified
secondary_reader.DeleteDocuments(term);
// Now remove from everywhere else (if asked to remove or if asked to add, in which case
// we first remove and then add)
// So we also need to remove child documents
if (indexable.Type != IndexableType.PropertyChange)
{
num_delete = primary_reader.DeleteDocuments(term);
// When we delete an indexable, also delete any children.
// FIXME: Shouldn't we also delete any children of children, etc.?
term = new Term("ParentUri", uri_str);
num_delete += primary_reader.DeleteDocuments(term);
secondary_reader.DeleteDocuments(term);
}
// If this is a strict removal (and not a deletion that
// we are doing in anticipation of adding something back),
// queue up a removed receipt.
if (indexable.Type == IndexableType.Remove)
{
IndexerRemovedReceipt r;
r = new IndexerRemovedReceipt(indexable.Id);
r.NumRemoved = num_delete;
receipt_queue.Add(r);
}
delete_count += num_delete;
}
term_docs.Close();
if (HaveItemCount)
{
AdjustItemCount(-delete_count);
}
else
{
SetItemCount(primary_reader);
}
// We are now done with the readers, so we close them.
// And also free them. Somehow not freeing them is preventing them from
// GCed at all.
primary_reader.Close();
primary_reader = null;
secondary_reader.Close();
secondary_reader = null;
// FIXME: If we crash at exactly this point, we are in
// trouble. Items will have been dropped from the index
// without the proper replacements being added. We can
// hopefully fix this when we move to Lucene 2.1.
// Step #2: Make another pass across our list of indexables
// and write out any new documents.
if (text_cache != null)
{
text_cache.BeginTransaction();
}
IndexWriter primary_writer, secondary_writer;
// FIXME: Lock obtain time-out can happen here; if that happens,
// an exception will be thrown and this method will break in the middle
// leaving IndexWriters unclosed! Same for any Lucene.Net-index modification
// methods.
primary_writer = new IndexWriter(PrimaryStore, IndexingAnalyzer, false);
secondary_writer = null;
foreach (Indexable indexable in request_indexables)
{
// If shutdown has been started, break here
// FIXME: Some more processing will continue, a lot of them
// concerning receipts, but the daemon will anyway ignore receipts
// now, what is the fastest way to stop from here ?
if (Shutdown.ShutdownRequested)
{
Log.Debug("Shutdown initiated. Breaking while flushing indexables.");
break;
}
// Receipts for removes were generated in the
// previous block. Now we just have to remove
// items from the text cache.
if (indexable.Type == IndexableType.Remove)
{
if (text_cache != null)
{
text_cache.Delete(indexable.Uri);
}
continue;
}
IndexerAddedReceipt r;
Hashtable prop_change_docs = (Hashtable)parent_child_old_props [indexable.Uri];
if (indexable.Type == IndexableType.PropertyChange)
{
Logger.Log.Debug("+{0} (props only)", indexable.DisplayUri);
r = new IndexerAddedReceipt(indexable.Id);
r.PropertyChangesOnly = true;
receipt_queue.Add(r);
Document doc;
if (prop_change_docs == null)
{
doc = null;
}
else
{
doc = (Document)prop_change_docs [indexable.Uri];
}
Document new_doc;
new_doc = RewriteDocument(doc, indexable);
// Write out the new document...
if (secondary_writer == null)
{
secondary_writer = new IndexWriter(SecondaryStore, IndexingAnalyzer, false);
}
secondary_writer.AddDocument(new_doc);
// Get child property change indexables...
ArrayList prop_change_indexables;
prop_change_indexables = GetChildPropertyChange(prop_change_docs, indexable);
// and store them; no need to delete them first, since they were already removed from the index
if (prop_change_indexables == null)
{
continue;
}
foreach (Indexable prop_change_indexable in prop_change_indexables)
{
Log.Debug("+{0} (props only, generated indexable)", prop_change_indexable.Uri);
doc = (Document)prop_change_docs [prop_change_indexable.Uri];
new_doc = RewriteDocument(doc, prop_change_indexable);
secondary_writer.AddDocument(new_doc);
}
continue; // ...and proceed to the next Indexable
}
// If we reach this point we know we are dealing with an IndexableType.Add
if (indexable.Type != IndexableType.Add)
{
throw new Exception("When I said it was an IndexableType.Add, I meant it!");
}
r = AddIndexableToIndex(indexable, primary_writer, ref secondary_writer, prop_change_docs);
if (r != null)
{
receipt_queue.Add(r);
}
}
if (text_cache != null)
{
text_cache.CommitTransaction();
}
if (Shutdown.ShutdownRequested)
{
foreach (DeferredInfo di in deferred_indexables)
{
di.Cleanup();
}
deferred_indexables.Clear();
foreach (Indexable indexable in request_indexables)
{
indexable.Cleanup();
}
primary_writer.Close();
if (secondary_writer != null)
{
secondary_writer.Close();
}
return(null);
}
if (request.OptimizeIndex)
{
Stopwatch watch = new Stopwatch();
Logger.Log.Debug("Optimizing {0}", IndexName);
watch.Start();
primary_writer.Optimize();
if (secondary_writer == null)
{
secondary_writer = new IndexWriter(SecondaryStore, IndexingAnalyzer, false);
}
secondary_writer.Optimize();
watch.Stop();
Logger.Log.Debug("{0} optimized in {1}", IndexName, watch);
}
// Step #4. Close our writers and return the events to
// indicate what has happened.
primary_writer.Close();
if (secondary_writer != null)
{
secondary_writer.Close();
}
// Send a single IndexerIndexablesReceipt if there were deferred indexables
if (deferred_indexables.Count > 0)
{
Log.Debug("{0} indexables generated more indexables; asking daemon to schedule their indexing.", deferred_indexables.Count);
IndexerIndexablesReceipt r = new IndexerIndexablesReceipt();
receipt_queue.Add(r);
}
IndexerReceipt [] receipt_array;
receipt_array = new IndexerReceipt [receipt_queue.Count];
for (int i = 0; i < receipt_queue.Count; ++i)
{
receipt_array [i] = (IndexerReceipt)receipt_queue [i];
}
return(receipt_array);
}