path: root/bitbake/lib/bb/ui/buildinfohelper.py

#
# BitBake ToasterUI Implementation
#
# Copyright (C) 2013        Intel Corporation
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

import datetime
import sys
import bb
import re
import ast

os.environ.setdefault("DJANGO_SETTINGS_MODULE", "toaster.toastermain.settings")

import toaster.toastermain.settings as toaster_django_settings
from toaster.orm.models import Build, Task, Recipe, Layer_Version, Layer, Target, LogMessage, HelpText
from toaster.orm.models import Target_Image_File
from toaster.orm.models import Variable, VariableHistory
from toaster.orm.models import Package, Package_File, Target_Installed_Package, Target_File
from toaster.orm.models import Task_Dependency, Package_Dependency
from toaster.orm.models import Recipe_Dependency
from bb.msg import BBLogFormatter as format

class NotExisting(Exception):
    pass

class ORMWrapper(object):
    """ This class creates the dictionaries needed to store information in the database
        following the format defined by the Django models. It is also used to save this
        information in the database.
    """

    def __init__(self):
        pass


    def create_build_object(self, build_info):
        assert 'machine' in build_info
        assert 'distro' in build_info
        assert 'distro_version' in build_info
        assert 'started_on' in build_info
        assert 'cooker_log_path' in build_info
        assert 'build_name' in build_info
        assert 'bitbake_version' in build_info

        build = Build.objects.create(
                                    machine=build_info['machine'],
                                    distro=build_info['distro'],
                                    distro_version=build_info['distro_version'],
                                    started_on=build_info['started_on'],
                                    completed_on=build_info['started_on'],
                                    cooker_log_path=build_info['cooker_log_path'],
                                    build_name=build_info['build_name'],
                                    bitbake_version=build_info['bitbake_version'])

        return build

    def create_target_objects(self, target_info):
        assert 'build' in target_info
        assert 'targets' in target_info

        targets = []
        for tgt_name in target_info['targets']:
            tgt_object = Target.objects.create( build = target_info['build'],
                                    target = tgt_name,
                                    is_image = False,
                                    );
            targets.append(tgt_object)
        return targets

    def update_build_object(self, build, errors, warnings, taskfailures):
        assert isinstance(build,Build)
        assert isinstance(errors, int)
        assert isinstance(warnings, int)

        outcome = Build.SUCCEEDED
        if errors or taskfailures:
            outcome = Build.FAILED

        build.completed_on = datetime.datetime.now()
        build.timespent = int((build.completed_on - build.started_on).total_seconds())
        build.errors_no = errors
        build.warnings_no = warnings
        build.outcome = outcome
        build.save()

    def update_target_object(self, target, license_manifest_path):

        target.license_manifest_path = license_manifest_path
        target.save()

    def get_update_task_object(self, task_information, must_exist = False):
        assert 'build' in task_information
        assert 'recipe' in task_information
        assert 'task_name' in task_information

        task_object, created = Task.objects.get_or_create(
                                build=task_information['build'],
                                recipe=task_information['recipe'],
                                task_name=task_information['task_name'],
                                )

        if must_exist and created:
            task_information['debug'] = "build id %d, recipe id %d" % (task_information['build'].pk, task_information['recipe'].pk)
            task_object.delete()
            raise NotExisting("Task object created when expected to exist", task_information)

        for v in vars(task_object):
            if v in task_information.keys():
                vars(task_object)[v] = task_information[v]

        # update setscene-related information
        if 1 == Task.objects.related_setscene(task_object).count():
            if task_object.outcome == Task.OUTCOME_COVERED:
                task_object.outcome = Task.OUTCOME_CACHED

            outcome_task_setscene = Task.objects.get(task_executed=True, build = task_object.build,
                                    recipe = task_object.recipe, task_name=task_object.task_name+"_setscene").outcome
            if outcome_task_setscene == Task.OUTCOME_SUCCESS:
                task_object.sstate_result = Task.SSTATE_RESTORED
            elif outcome_task_setscene == Task.OUTCOME_FAILED:
                task_object.sstate_result = Task.SSTATE_FAILED

        # mark down duration if we have a start time and a current time
        if 'start_time' in task_information.keys() and 'end_time' in task_information.keys():
            duration = task_information['end_time'] - task_information['start_time']
            task_object.elapsed_time = duration

        task_object.save()
        return task_object


    def get_update_recipe_object(self, recipe_information, must_exist = False):
        assert 'layer_version' in recipe_information
        assert 'file_path' in recipe_information


        recipe_object, created = Recipe.objects.get_or_create(
                                         layer_version=recipe_information['layer_version'],
                                         file_path=recipe_information['file_path'])

        if must_exist and created:
            recipe_object.delete()
            raise NotExisting("Recipe object created when expected to exist", recipe_information)

        for v in vars(recipe_object):
            if v in recipe_information.keys():
                vars(recipe_object)[v] = recipe_information[v]

        recipe_object.save()

        return recipe_object

    def get_update_layer_version_object(self, build_obj, layer_obj, layer_version_information):
        assert isinstance(build_obj, Build)
        assert isinstance(layer_obj, Layer)
        assert 'branch' in layer_version_information
        assert 'commit' in layer_version_information
        assert 'priority' in layer_version_information

        layer_version_object, created = Layer_Version.objects.get_or_create(
                                    build = build_obj,
                                    layer = layer_obj,
                                    branch = layer_version_information['branch'],
                                    commit = layer_version_information['commit'],
                                    priority = layer_version_information['priority']
                                    )

        return layer_version_object

    def get_update_layer_object(self, layer_information):
        assert 'name' in layer_information
        assert 'local_path' in layer_information
        assert 'layer_index_url' in layer_information

        layer_object, created = Layer.objects.get_or_create(
                                name=layer_information['name'],
                                local_path=layer_information['local_path'],
                                layer_index_url=layer_information['layer_index_url'])

        return layer_object

    def save_target_file_information(self, build_obj, target_obj, filedata):
        assert isinstance(build_obj, Build)
        assert isinstance(target_obj, Target)
        dirs = filedata['dirs']
        files = filedata['files']
        syms = filedata['syms']

        # we insert directories, ordered by name depth
        for d in sorted(dirs, key=lambda x:len(x[-1].split("/"))):
            (user, group, size) = d[1:4]
            permission = d[0][1:]
            path = d[4].lstrip(".")
            if len(path) == 0:
                # we create the root directory as a special case
                path = "/"
                tf_obj = Target_File.objects.create(
                        target = target_obj,
                        path = path,
                        size = size,
                        inodetype = Target_File.ITYPE_DIRECTORY,
                        permission = permission,
                        owner = user,
                        group = group,
                        )
                tf_obj.directory = tf_obj
                tf_obj.save()
                continue
            parent_path = "/".join(path.split("/")[:len(path.split("/")) - 1])
            if len(parent_path) == 0:
                parent_path = "/"
            parent_obj = Target_File.objects.get(target = target_obj, path = parent_path, inodetype = Target_File.ITYPE_DIRECTORY)
            tf_obj = Target_File.objects.create(
                        target = target_obj,
                        path = path,
                        size = size,
                        inodetype = Target_File.ITYPE_DIRECTORY,
                        permission = permission,
                        owner = user,
                        group = group,
                        directory = parent_obj)


        # we insert files
        for d in files:
            (user, group, size) = d[1:4]
            permission = d[0][1:]
            path = d[4].lstrip(".")
            parent_path = "/".join(path.split("/")[:len(path.split("/")) - 1])
            inodetype = Target_File.ITYPE_REGULAR
            if d[0].startswith('b'):
                inodetype = Target_File.ITYPE_BLOCK
            if d[0].startswith('c'):
                inodetype = Target_File.ITYPE_CHARACTER
            if d[0].startswith('p'):
                inodetype = Target_File.ITYPE_FIFO

            tf_obj = Target_File.objects.create(
                        target = target_obj,
                        path = path,
                        size = size,
                        inodetype = inodetype,
                        permission = permission,
                        owner = user,
                        group = group)
            parent_obj = Target_File.objects.get(target = target_obj, path = parent_path, inodetype = Target_File.ITYPE_DIRECTORY)
            tf_obj.directory = parent_obj
            tf_obj.save()

        # we insert symlinks
        for d in syms:
            (user, group, size) = d[1:4]
            permission = d[0][1:]
            path = d[4].lstrip(".")
            filetarget_path = d[6]

            parent_path = "/".join(path.split("/")[:len(path.split("/")) - 1])
            if not filetarget_path.startswith("/"):
                # we have a relative path, get a normalized absolute one
                filetarget_path = parent_path + "/" + filetarget_path
                fcp = filetarget_path.split("/")
                fcpl = []
                for i in fcp:
                    if i == "..":
                        fcpl.pop()
                    else:
                        fcpl.append(i)
                filetarget_path = "/".join(fcpl)

            try:
                filetarget_obj = Target_File.objects.get(target = target_obj, path = filetarget_path)
            except Exception as e:
                # we might have an invalid link; no way to detect this. just set it to None
                filetarget_obj = None

            parent_obj = Target_File.objects.get(target = target_obj, path = parent_path, inodetype = Target_File.ITYPE_DIRECTORY)

            tf_obj = Target_File.objects.create(
                        target = target_obj,
                        path = path,
                        size = size,
                        inodetype = Target_File.ITYPE_SYMLINK,
                        permission = permission,
                        owner = user,
                        group = group,
                        directory = parent_obj,
                        sym_target = filetarget_obj)


    def save_target_package_information(self, build_obj, target_obj, packagedict, pkgpnmap, recipes):
        assert isinstance(build_obj, Build)
        assert isinstance(target_obj, Target)

        errormsg = ""
        for p in packagedict:
            searchname = p
            if 'OPKGN' in pkgpnmap[p].keys():
                searchname = pkgpnmap[p]['OPKGN']

            packagedict[p]['object'], created = Package.objects.get_or_create( build = build_obj, name = searchname )
            if created:
                # package was not build in the current build, but
                # fill in everything we can from the runtime-reverse package data
                try:
                    packagedict[p]['object'].recipe = recipes[pkgpnmap[p]['PN']]
                    packagedict[p]['object'].version = pkgpnmap[p]['PV']
                    packagedict[p]['object'].installed_name = p
                    packagedict[p]['object'].revision = pkgpnmap[p]['PR']
                    packagedict[p]['object'].license = pkgpnmap[p]['LICENSE']
                    packagedict[p]['object'].section = pkgpnmap[p]['SECTION']
                    packagedict[p]['object'].summary = pkgpnmap[p]['SUMMARY']
                    packagedict[p]['object'].description = pkgpnmap[p]['DESCRIPTION']
                    packagedict[p]['object'].size = int(pkgpnmap[p]['PKGSIZE'])

                # no files recorded for this package, so save files info
                    for targetpath in pkgpnmap[p]['FILES_INFO']:
                        targetfilesize = pkgpnmap[p]['FILES_INFO'][targetpath]
                        Package_File.objects.create( package = packagedict[p]['object'],
                            path = targetpath,
                            size = targetfilesize)
                except KeyError as e:
                    errormsg += "  stpi: Key error, package %s key %s \n" % ( p, e )

            # save disk installed size
            packagedict[p]['object'].installed_size = packagedict[p]['size']
            packagedict[p]['object'].save()

            Target_Installed_Package.objects.create(target = target_obj, package = packagedict[p]['object'])

        for p in packagedict:
            for (px,deptype) in packagedict[p]['depends']:
                if deptype == 'depends':
                    tdeptype = Package_Dependency.TYPE_TRDEPENDS
                elif deptype == 'recommends':
                    tdeptype = Package_Dependency.TYPE_TRECOMMENDS

                Package_Dependency.objects.create( package = packagedict[p]['object'],
                                        depends_on = packagedict[px]['object'],
                                        dep_type = tdeptype,
                                        target = target_obj);

        if (len(errormsg) > 0):
            raise Exception(errormsg)

    def save_target_image_file_information(self, target_obj, file_name, file_size):
        target_image_file = Target_Image_File.objects.create( target = target_obj,
                            file_name = file_name,
                            file_size = file_size)
        target_image_file.save()

    def create_logmessage(self, log_information):
        assert 'build' in log_information
        assert 'level' in log_information
        assert 'message' in log_information

        log_object = LogMessage.objects.create(
                        build = log_information['build'],
                        level = log_information['level'],
                        message = log_information['message'])

        for v in vars(log_object):
            if v in log_information.keys():
                vars(log_object)[v] = log_information[v]

        return log_object.save()


    def save_build_package_information(self, build_obj, package_info, recipes):
        assert isinstance(build_obj, Build)

        # create and save the object
        pname = package_info['PKG']
        if 'OPKGN' in package_info.keys():
            pname = package_info['OPKGN']

        bp_object, created = Package.objects.get_or_create( build = build_obj,
                                       name = pname )

        bp_object.installed_name = package_info['PKG']
        bp_object.recipe = recipes[package_info['PN']]
        bp_object.version = package_info['PKGV']
        bp_object.revision = package_info['PKGR']
        bp_object.summary = package_info['SUMMARY']
        bp_object.description = package_info['DESCRIPTION']
        bp_object.size = int(package_info['PKGSIZE'])
        bp_object.section = package_info['SECTION']
        bp_object.license = package_info['LICENSE']
        bp_object.save()

        # save any attached file information
        for path in package_info['FILES_INFO']:
                fo = Package_File.objects.create( package = bp_object,
                                        path = path,
                                        size = package_info['FILES_INFO'][path] )

        def _po_byname(p):
            pkg, created = Package.objects.get_or_create(build = build_obj, name = p)
            if created:
                pkg.size = -1
                pkg.save()
            return pkg

        # save soft dependency information
        if 'RDEPENDS' in package_info and package_info['RDEPENDS']:
            for p in bb.utils.explode_deps(package_info['RDEPENDS']):
                Package_Dependency.objects.get_or_create( package = bp_object,
                    depends_on = _po_byname(p), dep_type = Package_Dependency.TYPE_RDEPENDS)
        if 'RPROVIDES' in package_info and package_info['RPROVIDES']:
            for p in bb.utils.explode_deps(package_info['RPROVIDES']):
                Package_Dependency.objects.get_or_create( package = bp_object,
                    depends_on = _po_byname(p), dep_type = Package_Dependency.TYPE_RPROVIDES)
        if 'RRECOMMENDS' in package_info and package_info['RRECOMMENDS']:
            for p in bb.utils.explode_deps(package_info['RRECOMMENDS']):
                Package_Dependency.objects.get_or_create( package = bp_object,
                    depends_on = _po_byname(p), dep_type = Package_Dependency.TYPE_RRECOMMENDS)
        if 'RSUGGESTS' in package_info and package_info['RSUGGESTS']:
            for p in bb.utils.explode_deps(package_info['RSUGGESTS']):
                Package_Dependency.objects.get_or_create( package = bp_object,
                    depends_on = _po_byname(p), dep_type = Package_Dependency.TYPE_RSUGGESTS)
        if 'RREPLACES' in package_info and package_info['RREPLACES']:
            for p in bb.utils.explode_deps(package_info['RREPLACES']):
                Package_Dependency.objects.get_or_create( package = bp_object,
                    depends_on = _po_byname(p), dep_type = Package_Dependency.TYPE_RREPLACES)
        if 'RCONFLICTS' in package_info and package_info['RCONFLICTS']:
            for p in bb.utils.explode_deps(package_info['RCONFLICTS']):
                Package_Dependency.objects.get_or_create( package = bp_object,
                    depends_on = _po_byname(p), dep_type = Package_Dependency.TYPE_RCONFLICTS)

        return bp_object

    def save_build_variables(self, build_obj, vardump):
        assert isinstance(build_obj, Build)

        for k in vardump:
            desc = vardump[k]['doc'];
            if desc is None:
                var_words = [word for word in k.split('_')]
                root_var = "_".join([word for word in var_words if word.isupper()])
                if root_var and root_var != k and root_var in vardump:
                    desc = vardump[root_var]['doc']
            if desc is None:
                desc = ''
            if desc:
                helptext_obj = HelpText.objects.create(build=build_obj,
                    area=HelpText.VARIABLE,
                    key=k,
                    text=desc)
            if not bool(vardump[k]['func']):
                value = vardump[k]['v'];
                if value is None:
                    value = ''
                variable_obj = Variable.objects.create( build = build_obj,
                    variable_name = k,
                    variable_value = value,
                    description = desc)
                for vh in vardump[k]['history']:
                    if not 'documentation.conf' in vh['file']:
                        VariableHistory.objects.create( variable = variable_obj,
                                file_name = vh['file'],
                                line_number = vh['line'],
                                operation = vh['op'])

class BuildInfoHelper(object):
    """ This class gathers the build information from the server and sends it
        towards the ORM wrapper for storing in the database
        It is instantiated once per build
        Keeps in memory all data that needs matching before writing it to the database
    """

    def __init__(self, server, has_build_history = False):
        self._configure_django()
        self.internal_state = {}
        self.internal_state['taskdata'] = {}
        self.task_order = 0
        self.server = server
        self.orm_wrapper = ORMWrapper()
        self.has_build_history = has_build_history
        self.tmp_dir = self.server.runCommand(["getVariable", "TMPDIR"])[0]

    def _configure_django(self):
        # Add toaster to sys path for importing modules
        sys.path.append(os.path.join(os.path.dirname(os.path.dirname(os.path.dirname(__file__))), 'toaster'))

    ###################
    ## methods to convert event/external info into objects that the ORM layer uses


    def _get_build_information(self):
        build_info = {}
        # Generate an identifier for each new build

        build_info['machine'] = self.server.runCommand(["getVariable", "MACHINE"])[0]
        build_info['distro'] = self.server.runCommand(["getVariable", "DISTRO"])[0]
        build_info['distro_version'] = self.server.runCommand(["getVariable", "DISTRO_VERSION"])[0]
        build_info['started_on'] = datetime.datetime.now()
        build_info['completed_on'] = datetime.datetime.now()
        build_info['cooker_log_path'] = self.server.runCommand(["getVariable", "BB_CONSOLELOG"])[0]
        build_info['build_name'] = self.server.runCommand(["getVariable", "BUILDNAME"])[0]
        build_info['bitbake_version'] = self.server.runCommand(["getVariable", "BB_VERSION"])[0]

        return build_info

    def _get_task_information(self, event, recipe):
        assert 'taskname' in vars(event)

        task_information = {}
        task_information['build'] = self.internal_state['build']
        task_information['outcome'] = Task.OUTCOME_NA
        task_information['recipe'] = recipe
        task_information['task_name'] = event.taskname
        try:
            # some tasks don't come with a hash. and that's ok
            task_information['sstate_checksum'] = event.taskhash
        except AttributeError:
            pass
        return task_information

    def _get_layer_version_for_path(self, path):
        assert path.startswith("/")
        assert 'build' in self.internal_state

        def _slkey(layer_version):
            assert isinstance(layer_version, Layer_Version)
            return len(layer_version.layer.local_path)

        # Heuristics: we always match recipe to the deepest layer path that
        # we can match to the recipe file path
        for bl in sorted(Layer_Version.objects.filter(build = self.internal_state['build']), reverse=True, key=_slkey):
            if (path.startswith(bl.layer.local_path)):
                return bl

        #TODO: if we get here, we didn't read layers correctly
        assert False
        return None

    def _get_recipe_information_from_taskfile(self, taskfile):
        localfilepath = taskfile.split(":")[-1]
        layer_version_obj = self._get_layer_version_for_path(localfilepath)

        recipe_info = {}
        recipe_info['layer_version'] = layer_version_obj
        recipe_info['file_path'] = taskfile

        return recipe_info

    def _get_path_information(self, task_object):
        assert isinstance(task_object, Task)
        build_stats_format = "{tmpdir}/buildstats/{target}-{machine}/{buildname}/{package}/"
        build_stats_path = []

        for t in self.internal_state['targets']:
            target = t.target
            machine = self.internal_state['build'].machine
            buildname = self.internal_state['build'].build_name
            pe, pv = task_object.recipe.version.split(":",1)
            if len(pe) > 0:
                package = task_object.recipe.name + "-" + pe + "_" + pv
            else:
                package = task_object.recipe.name + "-" + pv

            build_stats_path.append(build_stats_format.format(tmpdir=self.tmp_dir, target=target,
                                                     machine=machine, buildname=buildname,
                                                     package=package))

        return build_stats_path

    def _remove_redundant(self, string):
        ret = []
        for i in string.split():
            if i not in ret:
                ret.append(i)
        return " ".join(sorted(ret))


    ################################
    ## external available methods to store information

    def store_layer_info(self, event):
        assert 'data' in vars(event)
        layerinfos = event.data
        self.internal_state['lvs'] = {}
        for layer in layerinfos:
            self.internal_state['lvs'][self.orm_wrapper.get_update_layer_object(layerinfos[layer])] = layerinfos[layer]['version']


    def store_started_build(self, event):
        assert '_pkgs' in vars(event)
        build_information = self._get_build_information()

        build_obj = self.orm_wrapper.create_build_object(build_information)
        self.internal_state['build'] = build_obj

        # save layer version information for this build
        for layer_obj in self.internal_state['lvs']:
            self.orm_wrapper.get_update_layer_version_object(build_obj, layer_obj, self.internal_state['lvs'][layer_obj])

        del self.internal_state['lvs']

        # create target information
        target_information = {}
        target_information['targets'] = event._pkgs
        target_information['build'] = build_obj

        self.internal_state['targets'] = self.orm_wrapper.create_target_objects(target_information)

        # Save build configuration
        self.orm_wrapper.save_build_variables(build_obj, self.server.runCommand(["getAllKeysWithFlags", ["doc", "func"]])[0])

    def update_target_image_file(self, event):
        image_fstypes = self.server.runCommand(["getVariable", "IMAGE_FSTYPES"])[0]
        for t in self.internal_state['targets']:
            if t.is_image == True:
                output_files = list(event.data.viewkeys())
                for output in output_files:
                    if t.target in output and output.split('.rootfs.')[1] in image_fstypes:
                        self.orm_wrapper.save_target_image_file_information(t, output, event.data[output])

    def update_build_information(self, event, errors, warnings, taskfailures):
        if 'build' in self.internal_state:
            self.orm_wrapper.update_build_object(self.internal_state['build'], errors, warnings, taskfailures)


    def store_license_manifest_path(self, event):
        deploy_dir = event.data['deploy_dir']
        image_name =  event.data['image_name']
        path = deploy_dir + "/licenses/" + image_name + "/"
        for target in self.internal_state['targets']:
            if target.target in image_name:
                self.orm_wrapper.update_target_object(target, path)


    def store_started_task(self, event):
        assert isinstance(event, (bb.runqueue.sceneQueueTaskStarted, bb.runqueue.runQueueTaskStarted, bb.runqueue.runQueueTaskSkipped))
        assert 'taskfile' in vars(event)
        localfilepath = event.taskfile.split(":")[-1]
        assert localfilepath.startswith("/")

        identifier = event.taskfile + ":" + event.taskname

        recipe_information = self._get_recipe_information_from_taskfile(event.taskfile)
        recipe = self.orm_wrapper.get_update_recipe_object(recipe_information, True)

        task_information = self._get_task_information(event, recipe)
        task_information['outcome'] = Task.OUTCOME_NA

        if isinstance(event, bb.runqueue.runQueueTaskSkipped):
            assert 'reason' in vars(event)
            task_information['task_executed'] = False
            if event.reason == "covered":
                task_information['outcome'] = Task.OUTCOME_COVERED
            if event.reason == "existing":
                task_information['outcome'] = Task.OUTCOME_PREBUILT
        else:
            task_information['task_executed'] = True
            if 'noexec' in vars(event) and event.noexec == True:
                task_information['task_executed'] = False
                task_information['outcome'] = Task.OUTCOME_EMPTY
                task_information['script_type'] = Task.CODING_NA

        # do not assign order numbers to scene tasks
        if not isinstance(event, bb.runqueue.sceneQueueTaskStarted):
            self.task_order += 1
            task_information['order'] = self.task_order

        task_obj = self.orm_wrapper.get_update_task_object(task_information)

        self.internal_state['taskdata'][identifier] = {
                        'outcome': task_information['outcome'],
                    }


    def store_tasks_stats(self, event):
        for (taskfile, taskname, taskstats, recipename) in event.data:
            localfilepath = taskfile.split(":")[-1]
            assert localfilepath.startswith("/")

            recipe_information = self._get_recipe_information_from_taskfile(taskfile)
            recipe_object = Recipe.objects.get(layer_version = recipe_information['layer_version'],
                            file_path__endswith = recipe_information['file_path'],
                            name = recipename)

            task_information = {}
            task_information['build'] = self.internal_state['build']
            task_information['recipe'] = recipe_object
            task_information['task_name'] = taskname
            task_information['cpu_usage'] = taskstats['cpu_usage']
            task_information['disk_io'] = taskstats['disk_io']
            task_obj = self.orm_wrapper.get_update_task_object(task_information, True)  # must exist

    def update_and_store_task(self, event):
        assert 'taskfile' in vars(event)
        localfilepath = event.taskfile.split(":")[-1]
        assert localfilepath.startswith("/")

        identifier = event.taskfile + ":" + event.taskname
        if not identifier in self.internal_state['taskdata']:
            if isinstance(event, bb.build.TaskBase):
                # we do a bit of guessing
                candidates = [x for x in self.internal_state['taskdata'].keys() if x.endswith(identifier)]
                if len(candidates) == 1:
                    identifier = candidates[0]

        assert identifier in self.internal_state['taskdata']
        identifierlist = identifier.split(":")
        realtaskfile = ":".join(identifierlist[0:len(identifierlist)-1])
        recipe_information = self._get_recipe_information_from_taskfile(realtaskfile)
        recipe = self.orm_wrapper.get_update_recipe_object(recipe_information, True)
        task_information = self._get_task_information(event,recipe)

        if 'time' in vars(event):
            if not 'start_time' in self.internal_state['taskdata'][identifier]:
                self.internal_state['taskdata'][identifier]['start_time'] = event.time
            else:
                task_information['end_time'] = event.time
                task_information['start_time'] = self.internal_state['taskdata'][identifier]['start_time']

        task_information['outcome'] = self.internal_state['taskdata'][identifier]['outcome']

        if 'logfile' in vars(event):
            task_information['logfile'] = event.logfile

        if '_message' in vars(event):
            task_information['message'] = event._message

        if 'taskflags' in vars(event):
            # with TaskStarted, we get even more information
            if 'python' in event.taskflags.keys() and event.taskflags['python'] == '1':
                task_information['script_type'] = Task.CODING_PYTHON
            else:
                task_information['script_type'] = Task.CODING_SHELL

        if task_information['outcome'] == Task.OUTCOME_NA:
            if isinstance(event, (bb.runqueue.runQueueTaskCompleted, bb.runqueue.sceneQueueTaskCompleted)):
                task_information['outcome'] = Task.OUTCOME_SUCCESS
                del self.internal_state['taskdata'][identifier]

            if isinstance(event, (bb.runqueue.runQueueTaskFailed, bb.runqueue.sceneQueueTaskFailed)):
                task_information['outcome'] = Task.OUTCOME_FAILED
                del self.internal_state['taskdata'][identifier]

        self.orm_wrapper.get_update_task_object(task_information, True) # must exist


    def store_missed_state_tasks(self, event):
        for (fn, taskname, taskhash, sstatefile) in event.data['missed']:

            identifier = fn + taskname + "_setscene"
            recipe_information = self._get_recipe_information_from_taskfile(fn)
            recipe = self.orm_wrapper.get_update_recipe_object(recipe_information)
            class MockEvent: pass
            mevent = MockEvent()
            mevent.taskname = taskname
            mevent.taskhash = taskhash
            task_information = self._get_task_information(mevent,recipe)

            task_information['start_time'] = datetime.datetime.now()
            task_information['outcome'] = Task.OUTCOME_NA
            task_information['sstate_checksum'] = taskhash
            task_information['sstate_result'] = Task.SSTATE_MISS
            task_information['path_to_sstate_obj'] = sstatefile

            self.orm_wrapper.get_update_task_object(task_information)

        for (fn, taskname, taskhash, sstatefile) in event.data['found']:

            identifier = fn + taskname + "_setscene"
            recipe_information = self._get_recipe_information_from_taskfile(fn)
            recipe = self.orm_wrapper.get_update_recipe_object(recipe_information)
            class MockEvent: pass
            mevent = MockEvent()
            mevent.taskname = taskname
            mevent.taskhash = taskhash
            task_information = self._get_task_information(mevent,recipe)

            task_information['path_to_sstate_obj'] = sstatefile

            self.orm_wrapper.get_update_task_object(task_information)


    def store_target_package_data(self, event):
        assert 'data' in vars(event)
        # for all image targets
        for target in self.internal_state['targets']:
            if target.is_image:
                try:
                    pkgdata = event.data['pkgdata']
                    imgdata = event.data['imgdata'][target.target]
                    self.orm_wrapper.save_target_package_information(self.internal_state['build'], target, imgdata, pkgdata, self.internal_state['recipes'])
                    filedata = event.data['filedata'][target.target]
                    self.orm_wrapper.save_target_file_information(self.internal_state['build'], target, filedata)
                except KeyError:
                    # we must have not got the data for this image, nothing to save
                    pass



    def store_dependency_information(self, event):
        assert '_depgraph' in vars(event)
        assert 'layer-priorities' in event._depgraph
        assert 'pn' in event._depgraph
        assert 'tdepends' in event._depgraph

        errormsg = ""

        # save layer version priorities
        if 'layer-priorities' in event._depgraph.keys():
            for lv in event._depgraph['layer-priorities']:
                (name, path, regexp, priority) = lv
                layer_version_obj = self._get_layer_version_for_path(path[1:]) # paths start with a ^
                assert layer_version_obj is not None
                layer_version_obj.priority = priority
                layer_version_obj.save()

        # save recipe information
        self.internal_state['recipes'] = {}
        for pn in event._depgraph['pn']:

            file_name = event._depgraph['pn'][pn]['filename']
            layer_version_obj = self._get_layer_version_for_path(file_name.split(":")[-1])

            assert layer_version_obj is not None

            recipe_info = {}
            recipe_info['name'] = pn
            recipe_info['version'] = event._depgraph['pn'][pn]['version'].lstrip(":")
            recipe_info['layer_version'] = layer_version_obj
            recipe_info['summary'] = event._depgraph['pn'][pn]['summary']
            recipe_info['license'] = event._depgraph['pn'][pn]['license']
            recipe_info['description'] = event._depgraph['pn'][pn]['description']
            recipe_info['section'] = event._depgraph['pn'][pn]['section']
            recipe_info['homepage'] = event._depgraph['pn'][pn]['homepage']
            recipe_info['bugtracker'] = event._depgraph['pn'][pn]['bugtracker']
            recipe_info['file_path'] = file_name
            recipe = self.orm_wrapper.get_update_recipe_object(recipe_info)
            recipe.is_image = False
            if 'inherits' in event._depgraph['pn'][pn].keys():
                for cls in event._depgraph['pn'][pn]['inherits']:
                    if cls.endswith('/image.bbclass'):
                        recipe.is_image = True
                        break
            if recipe.is_image:
                for t in self.internal_state['targets']:
                    if pn == t.target:
                        t.is_image = True
                        t.save()
            self.internal_state['recipes'][pn] = recipe

        # we'll not get recipes for key w/ values listed in ASSUME_PROVIDED

        assume_provided = self.server.runCommand(["getVariable", "ASSUME_PROVIDED"])[0].split()

        # save recipe dependency
        # buildtime
        for recipe in event._depgraph['depends']:
            try:
                target = self.internal_state['recipes'][recipe]
                for dep in event._depgraph['depends'][recipe]:
                    dependency = self.internal_state['recipes'][dep]
                    Recipe_Dependency.objects.get_or_create( recipe = target,
                            depends_on = dependency, dep_type = Recipe_Dependency.TYPE_DEPENDS)
            except KeyError as e:
                if e not in assume_provided and not str(e).startswith("virtual/"):
                    errormsg += "  stpd: KeyError saving recipe dependency for %s, %s \n" % (recipe, e)

        # save all task information
        def _save_a_task(taskdesc):
            spec = re.split(r'\.', taskdesc);
            pn = ".".join(spec[0:-1])
            taskname = spec[-1]
            e = event
            e.taskname = pn
            recipe = self.internal_state['recipes'][pn]
            task_info = self._get_task_information(e, recipe)
            task_info['task_name'] = taskname
            task_obj = self.orm_wrapper.get_update_task_object(task_info)
            return task_obj

        # create tasks
        tasks = {}
        for taskdesc in event._depgraph['tdepends']:
            tasks[taskdesc] = _save_a_task(taskdesc)

        # create dependencies between tasks
        for taskdesc in event._depgraph['tdepends']:
            target = tasks[taskdesc]
            for taskdep in event._depgraph['tdepends'][taskdesc]:
                if taskdep not in tasks:
                    # Fetch tasks info is not collected previously
                    dep = _save_a_task(taskdep)
                else:
                    dep = tasks[taskdep]
                Task_Dependency.objects.get_or_create( task = target, depends_on = dep )

        if (len(errormsg) > 0):
            raise Exception(errormsg)


    def store_build_package_information(self, event):
        assert 'data' in vars(event)
        package_info = event.data
        self.orm_wrapper.save_build_package_information(self.internal_state['build'],
                            package_info,
                            self.internal_state['recipes'],
                            )

    def _store_log_information(self, level, text):
        log_information = {}
        log_information['build'] = self.internal_state['build']
        log_information['level'] = level
        log_information['message'] = text
        self.orm_wrapper.create_logmessage(log_information)

    def store_log_info(self, text):
        self._store_log_information(LogMessage.INFO, text)

    def store_log_warn(self, text):
        self._store_log_information(LogMessage.WARNING, text)

    def store_log_error(self, text):
        self._store_log_information(LogMessage.ERROR, text)

    def store_log_event(self, event):
        if 'build' in self.internal_state and 'backlog' in self.internal_state:
            if len(self.internal_state['backlog']):
                tempevent = self.internal_state['backlog'].pop()
                print "Saving stored event ", tempevent
                self.store_log_event(tempevent)
            else:
                del self.internal_state['backlog']

        if event.levelno < format.WARNING:
            return

        if not 'build' in self.internal_state:
            print "Save event for later"
            if not 'backlog' in self.internal_state:
                self.internal_state['backlog'] = []
            self.internal_state['backlog'].append(event)

            return
        log_information = {}
        log_information['build'] = self.internal_state['build']
        if event.levelno >= format.ERROR:
            log_information['level'] = LogMessage.ERROR
        elif event.levelno == format.WARNING:
            log_information['level'] = LogMessage.WARNING
        log_information['message'] = event.msg
        log_information['pathname'] = event.pathname
        log_information['lineno'] = event.lineno
        self.orm_wrapper.create_logmessage(log_information)