private void OnQueryDriverChanged (Queryable queryable, IQueryableChangeData change_data)
{
bool is_indexing = QueryDriver.IsIndexing;
if (is_indexing && crawl_status == IndexingStatus.NotRunning)
SendIndexingStatusResponse (IndexingStatus.Running);
else if (! is_indexing && crawl_status == IndexingStatus.Running)
SendIndexingStatusResponse (IndexingStatus.NotRunning);
}
// Instantiates and loads a StaticQueryable from an index directory
internal static Queryable LoadStaticQueryable(DirectoryInfo index_dir, QueryDomain query_domain)
{
StaticQueryable static_queryable = null;
if (!index_dir.Exists)
{
return(null);
}
try {
static_queryable = new StaticQueryable(index_dir.Name, index_dir.FullName, true);
} catch (InvalidOperationException) {
Logger.Log.Warn("Unable to create read-only index (likely due to index version mismatch): {0}", index_dir.FullName);
return(null);
} catch (Exception e) {
Logger.Log.Error(e, "Caught exception while instantiating static queryable: {0}", index_dir.Name);
return(null);
}
if (static_queryable == null)
{
return(null);
}
// Load StaticIndex.xml from index_dir.FullName/config
string config_file_path = Path.Combine(index_dir.FullName, "StaticIndex.xml");
Config static_index_config;
try {
static_index_config = Conf.LoadFrom(config_file_path);
if (static_index_config == null)
{
Log.Error("Unable to read config from {0}", config_file_path);
return(null);
}
} catch (Exception e) {
Log.Error(e, "Caught exception while reading config from {0}", config_file_path);
return(null);
}
string source = static_index_config.GetOption("Source", null);
if (source == null)
{
Log.Error("Invalid config file: {0}", config_file_path);
return(null);
}
QueryableFlavor flavor = new QueryableFlavor();
flavor.Name = source;
flavor.Domain = query_domain;
Queryable queryable = new Queryable(flavor, static_queryable);
return(queryable);
}
// A method to fire the ChangedEvent event.
static public void QueryableChanged(IQueryable iqueryable,
IQueryableChangeData change_data)
{
if (ChangedEvent != null)
{
Queryable queryable = iqueryable_to_queryable [iqueryable] as Queryable;
ChangedEvent(queryable, change_data);
}
}
private static ResponseMessage AddRemovableIndex(string path, string mnt_dir)
{
DirectoryInfo index_dir = new DirectoryInfo(StringFu.SanitizePath(path));
if (!index_dir.Exists)
{
ErrorResponse msg;
msg = new ErrorResponse();
msg.ErrorMessage = "Adding removable index failed";
msg.Details = String.Format("'{0}' does not exist.", path);
return(msg);
}
// Allow late loading of mount dir ?
mnt_dir = StringFu.SanitizePath(mnt_dir);
if (!Directory.Exists(mnt_dir))
{
ErrorResponse msg;
msg = new ErrorResponse();
msg.ErrorMessage = "Adding removable index failed";
msg.Details = String.Format("Mount directory '{0}' does not exist.", mnt_dir);
return(msg);
}
if (removable_queryables.ContainsKey(path))
{
ErrorResponse msg;
msg = new ErrorResponse();
msg.ErrorMessage = "Adding removable index failed";
msg.Details = String.Format("'{0}' already added.", path);
return(msg);
}
Queryable removable_queryable = null;
try {
iqueryable_lock.AcquireWriterLock(System.Threading.Timeout.Infinite);
removable_queryable = StaticQueryable.LoadRemovableQueryable(index_dir, mnt_dir);
} finally {
iqueryable_lock.ReleaseWriterLock();
}
if (removable_queryable == null)
{
return(new ErrorResponse("Adding removable index failed"));
}
iqueryable_to_queryable [removable_queryable.IQueryable] = removable_queryable;
removable_queryables [path] = removable_queryable;
RemovableIndexResponse resp = new RemovableIndexResponse();
resp.Source = removable_queryable.Name;
Log.Info("Adding removable index '{0}' from {1}", resp.Source, path);
return(resp);
}
public QueryClosure(Queryable queryable,
Query query,
QueryResult result,
IQueryableChangeData change_data)
{
this.queryable = queryable;
this.query = query;
this.result = result;
this.change_data = change_data;
}
private void OnQueryDriverChanged(Queryable queryable, IQueryableChangeData change_data)
{
bool is_indexing = QueryDriver.IsIndexing;
if (is_indexing && crawl_status == IndexingStatus.NotRunning)
{
SendIndexingStatusResponse(IndexingStatus.Running);
}
else if (!is_indexing && crawl_status == IndexingStatus.Running)
{
SendIndexingStatusResponse(IndexingStatus.NotRunning);
}
}
private static ResponseMessage RemoveRemovableIndex(string path, string mnt_dir)
{
if (!removable_queryables.ContainsKey(path))
{
ErrorResponse msg;
msg = new ErrorResponse();
msg.ErrorMessage = "Removing removable-index failed";
msg.Details = String.Format("'{0}' was not added.", path);
return(msg);
}
Queryable removable_queryable = removable_queryables [path];
// Assert
if (removable_queryable == null ||
!(removable_queryable.IQueryable is StaticQueryable))
{
ErrorResponse msg = new ErrorResponse("Removing removable-index failed");
return(msg);
}
StaticQueryable static_queryable = (StaticQueryable)removable_queryable.IQueryable;
if (static_queryable.RemovableMountDir != mnt_dir)
{
ErrorResponse msg;
msg = new ErrorResponse();
msg.ErrorMessage = "Removing removable-index failed";
msg.Details = String.Format("No index mounted at {0}.", mnt_dir);
return(msg);
}
static_queryable.Close();
removable_queryables.Remove(path);
try {
iqueryable_lock.AcquireWriterLock(System.Threading.Timeout.Infinite);
iqueryable_to_queryable [removable_queryable.IQueryable] = null;
iqueryable_to_queryable.Remove(removable_queryable.IQueryable);
} finally {
iqueryable_lock.ReleaseWriterLock();
}
RemovableIndexResponse resp = new RemovableIndexResponse();
resp.Source = removable_queryable.Name;
Log.Info("Removed removable-index '{0}' at {1}", removable_queryable.Name, path);
return(resp);
}
static public void DoOneQuery(Queryable queryable,
Query query,
QueryResult result,
IQueryableChangeData change_data)
{
try {
if (queryable.AcceptQuery(query))
{
QueryClosure qc = new QueryClosure(queryable, query, result, change_data);
result.AttachWorker(qc);
}
} catch (Exception ex) {
Logger.Log.Warn(ex, "Caught exception calling DoOneQuery on '{0}'", queryable.Name);
}
}
internal static Queryable LoadRemovableQueryable(DirectoryInfo index_dir, string mnt_dir)
{
Queryable queryable = LoadStaticQueryable(index_dir, QueryDomain.Local);
if (queryable == null)
{
return(null);
}
StaticQueryable static_queryable;
static_queryable = (StaticQueryable)queryable.IQueryable;
static_queryable.mount_dir = mnt_dir;
return(queryable);
}
// (1) register themselves in AssemblyInfo.cs:IQueryableTypes and
// (2) has a QueryableFlavor attribute attached
// assemble a Queryable object and stick it into our list of queryables.
static void ScanAssemblyForQueryables(Assembly assembly)
{
int count = 0;
foreach (Type type in ReflectionFu.GetTypesFromAssemblyAttribute(assembly, typeof(IQueryableTypesAttribute)))
{
foreach (QueryableFlavor flavor in ReflectionFu.ScanTypeForAttribute(type, typeof(QueryableFlavor)))
{
if (!UseQueryable(flavor.Name))
{
continue;
}
if (flavor.RequireInotify && !Inotify.Enabled)
{
Logger.Log.Warn("Can't start backend '{0}' without inotify", flavor.Name);
continue;
}
if (flavor.RequireExtendedAttributes && !ExtendedAttribute.Supported)
{
Logger.Log.Warn("Can't start backend '{0}' without extended attributes", flavor.Name);
continue;
}
IQueryable iq = null;
try {
iq = Activator.CreateInstance(type) as IQueryable;
} catch (Exception e) {
Logger.Log.Error(e, "Caught exception while instantiating {0} backend", flavor.Name);
}
if (iq != null)
{
Queryable q = new Queryable(flavor, iq);
iqueryable_to_queryable [iq] = q;
++count;
break;
}
}
}
Logger.Log.Debug("Found {0} backends in {1}", count, assembly.Location);
}
// Instantiates and loads a StaticQueryable from an index directory
internal static Queryable LoadStaticQueryable (DirectoryInfo index_dir, QueryDomain query_domain)
{
StaticQueryable static_queryable = null;
if (!index_dir.Exists)
return null;
try {
static_queryable = new StaticQueryable (index_dir.Name, index_dir.FullName, true);
} catch (InvalidOperationException) {
Logger.Log.Warn ("Unable to create read-only index (likely due to index version mismatch): {0}", index_dir.FullName);
return null;
} catch (Exception e) {
Logger.Log.Error (e, "Caught exception while instantiating static queryable: {0}", index_dir.Name);
return null;
}
if (static_queryable == null)
return null;
// Load StaticIndex.xml from index_dir.FullName/config
string config_file_path = Path.Combine (index_dir.FullName, "StaticIndex.xml");
Config static_index_config;
try {
static_index_config = Conf.LoadFrom (config_file_path);
if (static_index_config == null) {
Log.Error ("Unable to read config from {0}", config_file_path);
return null;
}
} catch (Exception e) {
Log.Error (e, "Caught exception while reading config from {0}", config_file_path);
return null;
}
string source = static_index_config.GetOption ("Source", null);
if (source == null) {
Log.Error ("Invalid config file: {0}", config_file_path);
return null;
}
QueryableFlavor flavor = new QueryableFlavor ();
flavor.Name = source;
flavor.Domain = query_domain;
Queryable queryable = new Queryable (flavor, static_queryable);
return queryable;
}
static public void DoOneQuery (Queryable queryable,
Query query,
QueryResult result,
IQueryableChangeData change_data)
{
try {
if (queryable.AcceptQuery (query)) {
QueryClosure qc = new QueryClosure (queryable, query, result, change_data);
result.AttachWorker (qc);
}
} catch (Exception ex) {
Logger.Log.Warn (ex, "Caught exception calling DoOneQuery on '{0}'", queryable.Name);
}
}
public QueryClosure (Queryable queryable,
Query query,
QueryResult result,
IQueryableChangeData change_data)
{
this.queryable = queryable;
this.query = query;
this.result = result;
this.change_data = change_data;
}
// (1) register themselves in AssemblyInfo.cs:IQueryableTypes and
// (2) has a QueryableFlavor attribute attached
// assemble a Queryable object and stick it into our list of queryables.
static void ScanAssemblyForQueryables (Assembly assembly)
{
int count = 0;
foreach (Type type in ReflectionFu.GetTypesFromAssemblyAttribute (assembly, typeof (IQueryableTypesAttribute))) {
foreach (QueryableFlavor flavor in ReflectionFu.ScanTypeForAttribute (type, typeof (QueryableFlavor))) {
if (! UseQueryable (flavor.Name))
continue;
if (flavor.RequireInotify && ! Inotify.Enabled) {
Logger.Log.Warn ("Can't start backend '{0}' without inotify", flavor.Name);
continue;
}
if (flavor.RequireExtendedAttributes && ! ExtendedAttribute.Supported) {
Logger.Log.Warn ("Can't start backend '{0}' without extended attributes", flavor.Name);
continue;
}
IQueryable iq = null;
try {
iq = Activator.CreateInstance (type) as IQueryable;
} catch (Exception e) {
Logger.Log.Error (e, "Caught exception while instantiating {0} backend", flavor.Name);
}
if (iq != null) {
Queryable q = new Queryable (flavor, iq);
iqueryable_to_queryable [iq] = q;
++count;
break;
}
}
}
Logger.Log.Debug ("Found {0} backends in {1}", count, assembly.Location);
}
private void OnQueryDriverChanged (Queryable queryable, IQueryableChangeData change_data)
{
if (this.result != null)
QueryDriver.DoOneQuery (queryable, this.query, this.result, change_data);
}