[yocto] [layerindex-web][PATCH 1/4] update_layer.py: avoid calling setup_core_layer_sys_path() when --initial

[Robert Yang]

Fixed:
$ update.py -b <new_branch>
[snip]
NOTE: Starting bitbake server...
Traceback (most recent call last):
  File "update_layer.py", line 471, in main
    utils.setup_core_layer_sys_path(settings, branch.name)
  File "/buildarea1/lyang1/layerindex-web/layerindex/utils.py", line 376, in setup_core_layer_sys_path
    core_layerdir = os.path.join(core_repodir, core_layerbranch.vcs_subdir)
AttributeError: 'NoneType' object has no attribute 'vcs_subdir'
[snip]

This is because core_layerbranch is not in database yet for completely new
branch, so it is None and we will get the error. Avoid calling
setup_core_layer_sys_path() when "update_layer.py --initial" will fix the
problem.

And also only add core layer's sys path when it is present, since core layer
may not be added yet for completely new branch.

Signed-off-by: Robert Yang <liezhi.yang at windriver.com>
---
 layerindex/update_layer.py | 19 ++++++++++---------
 layerindex/utils.py        |  9 +++++----
 2 files changed, 15 insertions(+), 13 deletions(-)

diff --git a/layerindex/update_layer.py b/layerindex/update_layer.py
index bbfaba9..81b730a 100644
--- a/layerindex/update_layer.py
+++ b/layerindex/update_layer.py
@@ -426,15 +426,6 @@ def main():
                 # why won't they just fix that?!)
                 tinfoil.config_data.setVar('LICENSE', '')
 
-                # Set up for recording patch info
-                utils.setup_core_layer_sys_path(settings, branch.name)
-                skip_patches = False
-                try:
-                    import oe.recipeutils
-                except ImportError:
-                    logger.warn('Failed to find lib/oe/recipeutils.py in layers - patch information will not be collected')
-                    skip_patches = True
-
                 layerconfparser = layerconfparse.LayerConfParse(logger=logger, tinfoil=tinfoil)
                 layer_config_data = layerconfparser.parse_layer(layerdir)
                 if not layer_config_data:
@@ -447,6 +438,16 @@ def main():
                     for i in ["BBFILE_COLLECTIONS", "LAYERVERSION", "LAYERDEPENDS", "LAYERRECOMMENDS"]:
                         print('%s = "%s"' % (i, utils.get_layer_var(layer_config_data, i, logger)))
                     sys.exit(0)
+
+                # Set up for recording patch info
+                utils.setup_core_layer_sys_path(settings, branch.name)
+                skip_patches = False
+                try:
+                    import oe.recipeutils
+                except ImportError:
+                    logger.warn('Failed to find lib/oe/recipeutils.py in layers - patch information will not be collected')
+                    skip_patches = True
+
                 utils.add_dependencies(layerbranch, layer_config_data, logger=logger)
                 utils.add_recommends(layerbranch, layer_config_data, logger=logger)
                 layerbranch.save()
diff --git a/layerindex/utils.py b/layerindex/utils.py
index f8c5fd4..c30038d 100644
--- a/layerindex/utils.py
+++ b/layerindex/utils.py
@@ -371,10 +371,11 @@ def setup_core_layer_sys_path(settings, branchname):
     """
     core_layer = get_layer(settings.CORE_LAYER_NAME)
     core_layerbranch = core_layer.get_layerbranch(branchname)
-    core_urldir = core_layer.get_fetch_dir()
-    core_repodir = os.path.join(settings.LAYER_FETCH_DIR, core_urldir)
-    core_layerdir = os.path.join(core_repodir, core_layerbranch.vcs_subdir)
-    sys.path.insert(0, os.path.join(core_layerdir, 'lib'))
+    if core_layerbranch:
+        core_urldir = core_layer.get_fetch_dir()
+        core_repodir = os.path.join(settings.LAYER_FETCH_DIR, core_urldir)
+        core_layerdir = os.path.join(core_repodir, core_layerbranch.vcs_subdir)
+        sys.path.insert(0, os.path.join(core_layerdir, 'lib'))
 
 def run_command_interruptible(cmd):
     """
-- 
2.7.4