[tracker-miners/wip/carlosg/miner-fs-fixes: 1/5] tracker-miner-fs: Drop support for fdo thumbnailer

[Carlos Garnacho <carlosg src gnome org>]

commit 2318d5740d163db2e13d0d29bbbfdfcc8dad7f9d
Author: Carlos Garnacho <carlosg gnome org>
Date:   Sun May 17 16:56:05 2020 +0200

    tracker-miner-fs: Drop support for fdo thumbnailer
    
    We had this support for the fdo thumbnailer to move/delete thumbnails
    as thumbnailed files got moved/deleted. This is too much of an edge
    case, even more with the minimal adoption of this interface (only
    tumblerd/xfce) use it. Drop this support entirely.

 src/miners/fs/meson.build           |   1 -
 src/miners/fs/tracker-miner-files.c | 105 --------
 src/miners/fs/tracker-thumbnailer.c | 508 ------------------------------------
 src/miners/fs/tracker-thumbnailer.h |  79 ------
 4 files changed, 693 deletions(-)
---
diff --git a/src/miners/fs/meson.build b/src/miners/fs/meson.build
index df7168b3f..e117f9968 100644
--- a/src/miners/fs/meson.build
+++ b/src/miners/fs/meson.build
@@ -6,7 +6,6 @@ sources = [
     'tracker-miner-files-index.c',
     'tracker-miner-files-peer-listener.c',
     'tracker-storage.c',
-    'tracker-thumbnailer.c',
     'tracker-writeback-listener.c',
     'tracker-writeback-dispatcher.c',
     'tracker-writeback.c',
diff --git a/src/miners/fs/tracker-miner-files.c b/src/miners/fs/tracker-miner-files.c
index 9fad6faa2..27d386d2a 100644
--- a/src/miners/fs/tracker-miner-files.c
+++ b/src/miners/fs/tracker-miner-files.c
@@ -44,7 +44,6 @@
 #include "tracker-config.h"
 #include "tracker-storage.h"
 #include "tracker-extract-watchdog.h"
-#include "tracker-thumbnailer.h"
 
 #define DISK_SPACE_CHECK_FREQUENCY 10
 #define SECONDS_PER_DAY 86400
@@ -120,17 +119,10 @@ struct TrackerMinerFilesPrivate {
 
        GList *extraction_queue;
 
-       TrackerThumbnailer *thumbnailer;
-
        GHashTable *writeback_tasks;
        gboolean paused_for_writeback;
 };
 
-typedef struct {
-       GMainLoop *main_loop;
-       TrackerMiner *miner;
-} ThumbnailMoveData;
-
 enum {
        VOLUME_MOUNTED_IN_STORE = 1 << 0,
        VOLUME_MOUNTED = 1 << 1
@@ -837,8 +829,6 @@ miner_files_initable_init (GInitable     *initable,
        g_signal_connect (mf->private->extract_watchdog, "lost",
                          G_CALLBACK (on_extractor_lost), mf);
 
-       mf->private->thumbnailer = tracker_thumbnailer_new ();
-
        return TRUE;
 }
 
@@ -960,10 +950,6 @@ miner_files_finalize (GObject *object)
                priv->stale_volumes_check_id = 0;
        }
 
-       if (priv->thumbnailer) {
-               g_object_unref (priv->thumbnailer);
-       }
-
        g_list_free (priv->extraction_queue);
        g_hash_table_destroy (priv->writeback_tasks);
 
@@ -2714,11 +2700,6 @@ miner_files_finished (TrackerMinerFS *fs,
                       gint            files_found,
                       gint            files_ignored)
 {
-       TrackerMinerFilesPrivate *priv = TRACKER_MINER_FILES (fs)->private;
-
-       if (priv->thumbnailer)
-               tracker_thumbnailer_send (priv->thumbnailer);
-
        tracker_miner_files_set_last_crawl_done (TRACKER_MINER_FILES (fs), TRUE);
 
        tracker_miner_files_check_unextracted (TRACKER_MINER_FILES (fs));
@@ -2776,59 +2757,15 @@ static gchar *
 miner_files_remove_file (TrackerMinerFS *fs,
                          GFile          *file)
 {
-       TrackerMinerFilesPrivate *priv = TRACKER_MINER_FILES (fs)->private;
-
-       if (priv->thumbnailer) {
-               gchar *uri;
-
-               uri = g_file_get_uri (file);
-               tracker_thumbnailer_remove_add (priv->thumbnailer, uri, NULL);
-               g_free (uri);
-       }
-
        return create_delete_sparql (file, TRUE, TRUE);
 }
 
-static void
-move_thumbnails_cb (GObject      *object,
-                    GAsyncResult *result,
-                    gpointer      user_data)
-{
-       ThumbnailMoveData *data = user_data;
-       TrackerMinerFilesPrivate *priv = TRACKER_MINER_FILES (data->miner)->private;
-       GError *error = NULL;
-
-       TrackerSparqlCursor *cursor = tracker_sparql_connection_query_finish (TRACKER_SPARQL_CONNECTION 
(object), result, &error);
-
-       if (error) {
-               g_critical ("Could move thumbnails: %s", error->message);
-               g_error_free (error);
-       } else {
-               while (tracker_sparql_cursor_next (cursor, NULL, NULL)) {
-                       const gchar *src, *dst, *mimetype;
-
-                       src = tracker_sparql_cursor_get_string (cursor, 0, NULL);
-                       dst = tracker_sparql_cursor_get_string (cursor, 1, NULL);
-                       mimetype = tracker_sparql_cursor_get_string (cursor, 2, NULL);
-
-                       if (priv->thumbnailer) {
-                               tracker_thumbnailer_move_add (priv->thumbnailer,
-                                                             src, mimetype, dst);
-                       }
-               }
-       }
-
-       g_object_unref (cursor);
-       g_main_loop_quit (data->main_loop);
-}
-
 static gchar *
 miner_files_move_file (TrackerMinerFS *fs,
                        GFile          *file,
                        GFile          *source_file,
                        gboolean        recursive)
 {
-       TrackerMinerFilesPrivate *priv = TRACKER_MINER_FILES (fs)->private;
        GString *sparql = g_string_new (NULL);
        const gchar *new_parent_iri = NULL;
        gchar *uri, *source_uri, *display_name, *container_clause = NULL;
@@ -2838,48 +2775,6 @@ miner_files_move_file (TrackerMinerFS *fs,
        uri = g_file_get_uri (file);
        source_uri = g_file_get_uri (source_file);
 
-       if (priv->thumbnailer) {
-               GFileInfo *file_info;
-
-               file_info = g_file_query_info (file,
-                                              G_FILE_ATTRIBUTE_STANDARD_CONTENT_TYPE,
-                                              G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS,
-                                              NULL, NULL);
-               tracker_thumbnailer_move_add (priv->thumbnailer, source_uri,
-                                             g_file_info_get_content_type (file_info),
-                                             uri);
-               g_object_unref (file_info);
-
-               if (recursive) {
-                       ThumbnailMoveData move_data;
-                       gchar *query;
-
-                       g_debug ("Moving thumbnails within '%s'", uri);
-
-                       /* Push all moved files to thumbnailer */
-                       move_data.main_loop = g_main_loop_new (NULL, FALSE);
-                       move_data.miner = TRACKER_MINER (fs);
-
-                       query = g_strdup_printf ("SELECT ?url ?new_url nie:mimeType(?u) {"
-                                                "  ?u a rdfs:Resource ;"
-                                                "     nie:url ?url ."
-                                                "  BIND (CONCAT (\"%s/\", SUBSTR (?url, STRLEN (\"%s/\") + 
1)) AS ?new_url) ."
-                                                "  FILTER (STRSTARTS (?url, \"%s/\"))"
-                                                "}",
-                                                uri, source_uri, source_uri);
-
-                       tracker_sparql_connection_query_async (tracker_miner_get_connection (TRACKER_MINER 
(fs)),
-                                                              query,
-                                                              NULL,
-                                                              move_thumbnails_cb,
-                                                              &move_data);
-
-                       g_main_loop_run (move_data.main_loop);
-                       g_main_loop_unref (move_data.main_loop);
-                       g_free (query);
-               }
-       }
-
        path = g_file_get_path (file);
        basename = g_filename_display_basename (path);
        display_name = tracker_sparql_escape_string (basename);