bitbake: bitbake: move extra cache collection out of cooker

The collection of the extra caching data should not
be performed by the cooker, but supplied to it.
This patch will also streamline the code for launching servers
without a UI attached.

Based on a patch by Bogdan Marinescu <bogdan.a.marinescu@intel.com>

(Bitbake rev: f0b54280a6bce522508e4741e5f507bc284113a8)

Signed-off-by: Alexandru DAMIAN <alexandru.damian@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

bitbake/bin/bitbake

@@ -75,6 +75,18 @@ def get_ui(config):
         sys.exit("FATAL: Invalid user interface '%s' specified.\n"
                  "Valid interfaces: depexp, goggle, ncurses, hob, knotty [default]." % interface)
 
+def gather_extra_cache_data():
+    extra = []
+    interfaces = ['depexp', 'goggle', 'ncurses', 'hob', 'knotty']
+    for i in interfaces:
+        try:
+            ui = __import__("bb.ui." + i, fromlist = [i])
+            if hasattr(ui, "extraCaches"):
+                extra = extra + ui.extraCaches
+            del ui
+        except:
+            pass
+    return extra
 
 # Display bitbake/OE warnings via the BitBake.Warnings logger, ignoring others"""
 warnlog = logging.getLogger("BitBake.Warnings")
@@ -237,6 +249,12 @@ def main():
 
     try:
         configuration.setServerRegIdleCallback(server.getServerIdleCB())
+
+        if configParams.server_only:
+            configuration.extra_caches = gather_extra_cache_data()
+        else:
+            configuration.extra_caches = getattr(ui_module, "extraCaches", [])
+
         cooker = bb.cooker.BBCooker(configuration)
 
         server.addcooker(cooker)

bitbake/lib/bb/cooker.py

@@ -94,28 +94,8 @@ class BBCooker:
         self.configuration = configuration
 
         self.caches_array = []
-        # Currently, only Image Creator hob ui needs extra cache.
-        # So, we save Extra Cache class name and container file
-        # information into a extraCaches field in hob UI.  
-        # TODO: In future, bin/bitbake should pass information into cooker,
-        # instead of getting information from configuration.ui. Also, some
-        # UI start up issues need to be addressed at the same time.
-        caches_name_array = ['bb.cache:CoreRecipeInfo']
-        if configuration.ui:
-            try:
-                module = __import__('bb.ui', fromlist=[configuration.ui])
-                name_array = (getattr(module, configuration.ui)).extraCaches
-                for recipeInfoName in name_array:
-                    caches_name_array.append(recipeInfoName)
-            except ImportError as exc:
-                # bb.ui.XXX is not defined and imported. It's an error!
-                logger.critical("Unable to import '%s' interface from bb.ui: %s" % (configuration.ui, exc))
-                sys.exit("FATAL: Failed to import '%s' interface." % configuration.ui)
-            except AttributeError:
-                # This is not an error. If the field is not defined in the ui,
-                # this interface might need no extra cache fields, so
-                # just skip this error!
-                logger.debug(2, "UI '%s' does not require extra cache!" % (configuration.ui))
+
+        caches_name_array = ['bb.cache:CoreRecipeInfo'] + configuration.extra_caches
 
         # At least CoreRecipeInfo will be loaded, so caches_array will never be empty!
         # This is the entry point, no further check needed!

bitbake/lib/bb/cookerdata.py

@@ -119,7 +119,6 @@ class CookerConfiguration(object):
         self.cmd = None
         self.abort = True
         self.force = False
-        self.ui = None
         self.profile = False
         self.nosetscene = False
         self.invalidate_stamp = False