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/*
* Zeitgeist
*
* Copyright (C) 2010 Michal Hruby <michal.mhr@gmail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* Authored by Michal Hruby <michal.mhr@gmail.com>
*
*/
using Zeitgeist;
[DBus (name = "org.gnome.zeitgeist.datahub")]
public interface DataHubService : Object
{
public abstract string[] get_data_providers () throws IOError;
}
public class DataHub : Object, DataHubService
{
private Zeitgeist.Log zg_log;
private Zeitgeist.DataSourceRegistry registry;
private MainLoop main_loop;
private List<DataProvider> providers;
private List<DataSource> sources_info; // list got from ZG's Registry
private GenericArray<Event> queued_events;
private uint idle_id = 0;
public int return_code { get; private set; default = 0; }
public DataHub ()
{
GLib.Object ();
}
construct
{
providers = new List<DataProvider> ();
sources_info = new List<DataSource> ();
queued_events = new GenericArray<Event> ();
main_loop = new MainLoop ();
zg_log = new Zeitgeist.Log ();
zg_log.notify["connected"].connect (() =>
{
if (!zg_log.is_connected)
{
debug ("Zeitgeist-daemon disappeared from the bus, exitting...");
quit ();
}
});
registry = new DataSourceRegistry ();
}
private void data_source_registered (DataSource ds)
{
unowned List<DataSource> iter = sources_info;
while (iter != null)
{
if (iter.data.unique_id == ds.unique_id)
{
break;
}
iter = iter.next;
}
if (iter != null)
{
iter.data = ds;
}
else
{
sources_info.prepend (ds);
}
}
private async void start_data_providers () throws Error
{
try
{
registry.source_registered.connect (data_source_registered);
var sources = yield registry.get_data_sources (null);
for (uint i=0; i<sources.length; i++)
{
sources_info.prepend (sources.get (i) as DataSource);
}
}
catch (GLib.Error err)
{
warning ("%s", err.message);
}
// TODO: load all datasources once we do them as modules
/*
foreach (var datasource in datasources)
{
providers.prepend (datasource.run ());
}
*/
providers.prepend (new RecentManagerGtk (this));
providers.prepend (new RecentDocumentsKDE (this));
#if ENABLE_TELEPATHY
providers.prepend (new TelepathyObserver (this));
#endif
if (Config.DOWNLOADS_MONITOR_ENABLED)
providers.prepend (new DownloadsDirectoryMonitor (this));
if (GLibExtra.check_version (2, 28, 0))
{
providers.prepend (new DesktopLaunchListener (this));
}
foreach (unowned DataProvider prov in providers)
{
bool enabled = true;
// we need to get the timestamp before we register the data provider
int64 timestamp = 0;
foreach (var src in sources_info)
{
if (src.unique_id == prov.unique_id)
{
timestamp = src.timestamp;
break;
}
}
if (prov.register)
{
var ds = new DataSource.full (prov.unique_id,
prov.name,
prov.description,
new GenericArray<Event> ()); // FIXME: templates!
try
{
enabled = yield registry.register_data_source (ds, null);
}
catch (GLib.Error reg_err)
{
warning ("%s", reg_err.message);
}
}
prov.items_available.connect (this.items_available);
if (enabled)
{
prov.last_timestamp = timestamp;
prov.start ();
}
}
}
private void items_available (DataProvider prov, GenericArray<Event> events)
{
if (!prov.enabled) return;
events.foreach ((e) => { queued_events.add (e); });
if (queued_events.length > 0 && idle_id == 0)
{
idle_id = Idle.add (() =>
{
insert_events ();
idle_id = 0;
return false;
});
}
}
private void insert_events ()
{
debug ("Inserting %u events", queued_events.length);
batch_insert_events.begin ();
queued_events = new GenericArray<Event> ();
}
protected async void batch_insert_events ()
{
// copy the events to GenericArray (with a ref on them)
GenericArray<Event> all_events = new GenericArray<Event> ();
queued_events.foreach ((e) => { all_events.add (e); });
while (all_events.length > 0)
{
uint elements_pushed = uint.min ((uint) all_events.length, 100);
GenericArray<Event> ptr_arr = new GenericArray<Event> ();
for (uint i=0; i<elements_pushed; i++) ptr_arr.add (all_events[i]);
try
{
yield zg_log.insert_events(ptr_arr, null);
}
catch (GLib.Error err)
{
warning ("Error during inserting events: %s", err.message);
}
all_events.remove_range (0, elements_pushed);
}
}
const string UNIQUE_NAME = "org.gnome.zeitgeist.datahub";
const string OBJECT_PATH = "/org/gnome/zeitgeist/datahub";
protected void run () throws Error
{
Bus.own_name (BusType.SESSION, UNIQUE_NAME, BusNameOwnerFlags.NONE,
(conn) => { conn.register_object (OBJECT_PATH, (DataHubService) this); },
() => { start_data_providers.begin (); },
() =>
{
warning ("Unable to get name \"org.gnome.zeitgeist.datahub\"" +
" on the bus!");
this.return_code = 1;
this.quit ();
}
);
main_loop.run ();
}
protected void quit ()
{
// dispose all providers
providers = new List<DataProvider> ();
main_loop.quit ();
}
public string[] get_data_source_actors (bool only_enabled = true)
{
string[] actors = {};
foreach (unowned DataSource src in sources_info)
{
if (only_enabled && !src.enabled) continue;
var template_arr = src.event_templates;
if (template_arr != null)
{
for (uint i=0; i<template_arr.length; i++)
{
Zeitgeist.Event event_template =
template_arr.get (i) as Zeitgeist.Event;
string? actor = event_template.actor;
if (actor != null && actor != "")
{
actors += actor;
}
}
}
}
return actors;
}
public string[] get_data_providers () throws IOError
{
string[] arr = {};
foreach (var provider in providers)
{
arr += provider.unique_id;
}
return arr;
}
public static int main (string[] args)
{
Environment.set_prgname ("zeitgeist-datahub");
var hub = new DataHub ();
try {
hub.run ();
} catch (Error err) {
stdout.printf("Error running Zeitgeist Datahub %s".printf(err.message));
}
return hub.return_code;
}
}
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