From patchwork Sat Jun 2 04:54:37 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: [bitbake-devel, 2/3] Hob: add versions for compatibility check between Hob and templates Date: Sat, 02 Jun 2012 04:54:37 -0000 From: Shane Wang X-Patchwork-Id: 29133 Message-Id: To: bitbake-devel@lists.openembedded.org If a user uses a very old version of Hob and does some work, later on he/she upgrade to the latest version of Hob, because Hob may change the settings (add more config option into the Adv. Settings dialog or remove some), then the old templates are not loadable and workable for the new Hob. Even though the user hasn't save any template before, the Hob could remember the settings between Hob sessions as a default template, (Remember we have a bug to ask Hob remember between sessions?), the new Hob will also load the default template. By adding versions, we can easily to fix the issue. If the versions don't match, Hob will remove the old default template first and initiate a new build, which has very very little impact on the user. (Just can't remember from the previous session after the user upgrades to a new and incompatible Hob) [Yocto #2492] Signed-off-by: Shane Wang --- bitbake/lib/bb/ui/crumbs/builder.py | 14 ++++++++++++-- bitbake/lib/bb/ui/crumbs/template.py | 17 ++++++++++++++++- 2 files changed, 28 insertions(+), 3 deletions(-) diff --git a/bitbake/lib/bb/ui/crumbs/builder.py b/bitbake/lib/bb/ui/crumbs/builder.py index 8d35ea9..eaf18ab 100755 --- a/bitbake/lib/bb/ui/crumbs/builder.py +++ b/bitbake/lib/bb/ui/crumbs/builder.py @@ -40,6 +40,8 @@ from bb.ui.crumbs.hig import CrumbsMessageDialog, ImageSelectionDialog, \ from bb.ui.crumbs.persistenttooltip import PersistentTooltip import bb.ui.crumbs.utils +hobVer = 20120530 + class Configuration: '''Represents the data structure of configuration.''' @@ -222,6 +224,7 @@ class Configuration: self.split_proxy("cvs", template.getVar("CVS_PROXY_HOST") + ":" + template.getVar("CVS_PROXY_PORT")) def save(self, template, defaults=False): + template.setVar("VERSION", "%s" % hobVer) # bblayers.conf template.setVar("BBLAYERS", " ".join(self.layers)) # local.conf @@ -468,7 +471,7 @@ class Builder(gtk.Window): def initiate_new_build_async(self): self.switch_page(self.MACHINE_SELECTION) - if self.load_template(TemplateMgr.convert_to_template_pathfilename("default", ".hob/")) == None: + if self.load_template(TemplateMgr.convert_to_template_pathfilename("default", ".hob/")) == False: self.handler.init_cooker() self.handler.set_extra_inherit("image_types") self.handler.generate_configuration() @@ -537,9 +540,16 @@ class Builder(gtk.Window): def load_template(self, path): if not os.path.isfile(path): - return None + return False self.template = TemplateMgr() + # check compatibility + tempVer = self.template.getVersion(path) + if not tempVer or int(tempVer) < hobVer: + self.template.destroy() + self.template = None + return False + try: self.template.load(path) self.configuration.load(self.template) diff --git a/bitbake/lib/bb/ui/crumbs/template.py b/bitbake/lib/bb/ui/crumbs/template.py index cbed270..7309bb6 100644 --- a/bitbake/lib/bb/ui/crumbs/template.py +++ b/bitbake/lib/bb/ui/crumbs/template.py @@ -101,7 +101,19 @@ class HobTemplateFile(ConfigFile): return self.dictionary[var] else: return "" - + + def getVersion(self): + contents = ConfigFile.readFile(self) + + pattern = "^\s*(\S+)\s*=\s*(\".*?\")" + + for line in contents: + match = re.search(pattern, line) + if match: + if match.group(1) == "VERSION": + return match.group(2).strip('"') + return None + def load(self): contents = ConfigFile.readFile(self) self.dictionary.clear() @@ -174,6 +186,9 @@ class TemplateMgr(gobject.GObject): self.image_bb.save() self.template_hob.save() + def getVersion(self, path): + return HobTemplateFile(path).getVersion() + def load(self, path): self.template_hob = HobTemplateFile(path) self.dictionary = self.template_hob.load()