src: fix cache mount in new ogLive

Mount cache in image_create() image_restore() and cache_fetch().

Remove init_cache() and ensure /opt/opengnsys/images/ exists
within the cache mountpoint if it does not exists in cache_mount().

src/live/ogOperations.py

@@ -543,7 +543,7 @@ class OgLiveOperations:
 
             fs = part["filesystem"].lower()
             if fs == 'cache':
-                init_cache()
+                mount_cache()
 
         logging.info('Partition setup command OK')
         result = self.refresh(ogRest)
@@ -562,6 +562,8 @@ class OgLiveOperations:
         cid = request.getId()
         partdev = get_partition_device(disk, partition)
 
+        mount_cache()
+
         self._ogbrowser_clear_logs()
         self._restartBrowser(self._url_log)
 
@@ -600,6 +602,8 @@ class OgLiveOperations:
         backup = request.getBackup()
         image_path = f'/opt/opengnsys/images/{name}.img'
 
+        mount_cache()
+
         self._ogbrowser_clear_logs()
         self._restartBrowser(self._url_log)
 
@@ -772,6 +776,8 @@ class OgLiveOperations:
         repo = request.getRepo()
         ctype = request.getType()
 
+        mount_cache()
+
         logging.info(f'Request to cache image {image}.img via {ctype} from {repo}')
 
         if ctype == 'UNICAST':

src/utils/cache.py

@@ -19,16 +19,13 @@ OG_CACHE_IMAGE_PATH =  OG_CACHE_PATH + OG_IMAGE_PATH
 OGCLIENT_LOG_CACHE='/opt/opengnsys/log/{ip}.cache.txt'
 
 def mount_cache():
-    """
-    Probes for cache and mounts if succesful.
-
-    Returns the mountpoint or an empty string.
-    """
     cache_dev = get_cache_dev_path()
 
     if cache_dev:
-        # cache_target = cache_dev.replace('dev', 'mnt')
-        mount_mkdir(cache_dev, OG_CACHE_PATH)
+        cache_mounted = mount_mkdir(cache_dev, OG_CACHE_PATH)
+
+        if cache_mounted and not os.path.exists(OG_CACHE_IMAGE_PATH):
+            os.makedirs(OG_CACHE_IMAGE_PATH)
         return OG_CACHE_PATH
 
     return ''
@@ -69,15 +66,3 @@ def generate_cache_txt():
             return
         content = ','.join(files)
         write_cache_txt(content)
-
-
-def init_cache():
-    """
-    If a cache partition is present, creates the following directories
-    /opt/opengnsys/images. This is the default folder in which images
-    are stored when using tiptorrent-cache.
-    """
-    mountpoint = mount_cache()
-    if mountpoint:
-        logging.info(f'Creating cache directory at {mountpoint}')
-        os.makedirs(f'{mountpoint}/opt/opengnsys/images')