[gnome-software] Always ensure the cache is present when using gnome-software-cmd

[Richard Hughes <rhughes src gnome org>]

commit b3741aa03ae0d7b57431ddd8ee2f40d568a31474
Author: Richard Hughes <richard hughsie com>
Date:   Mon May 22 11:52:23 2017 +0100

    Always ensure the cache is present when using gnome-software-cmd

 lib/gs-cmd.c |   16 ++++++++++++++++
 1 files changed, 16 insertions(+), 0 deletions(-)
---
diff --git a/lib/gs-cmd.c b/lib/gs-cmd.c
index 39f7038..3a7ebc6 100644
--- a/lib/gs-cmd.c
+++ b/lib/gs-cmd.c
@@ -293,6 +293,22 @@ main (int argc, char **argv)
        }
        gs_plugin_loader_dump_state (plugin_loader);
 
+       /* ensure that at least some metadata of any age is present, and also
+        * spin up the plugins enough as to prime caches */
+       if (g_getenv ("GS_CMD_NO_INITIAL_REFRESH") == NULL) {
+               g_autoptr(GsPluginJob) plugin_job = NULL;
+               plugin_job = gs_plugin_job_newv (GS_PLUGIN_ACTION_REFRESH,
+                                                "age", G_MAXUINT,
+                                                "refresh-flags", GS_PLUGIN_REFRESH_FLAGS_METADATA,
+                                                NULL);
+               ret = gs_plugin_loader_job_action (plugin_loader, plugin_job,
+                                                   NULL, &error);
+               if (!ret) {
+                       g_print ("Failed to refresh plugins: %s\n", error->message);
+                       goto out;
+               }
+       }
+
        /* do action */
        if (argc == 2 && g_strcmp0 (argv[1], "installed") == 0) {
                for (i = 0; i < repeat; i++) {