6 files changed, 665 insertions, 119 deletions

diff --git a/bitbake/lib/bb/command.py b/bitbake/lib/bb/command.py
index 012b35faf6..d5be86dab8 100644
--- a/bitbake/lib/bb/command.py
+++ b/bitbake/lib/bb/command.py
@@ -28,8 +28,15 @@ and must not trigger events, directly or indirectly.
 Commands are queued in a CommandQueue
 """
 
+from collections import OrderedDict, defaultdict
+
 import bb.event
 import bb.cooker
+import bb.remotedata
+
+class DataStoreConnectionHandle(object):
+    def __init__(self, dsindex=0):
+        self.dsindex = dsindex
 
 class CommandCompleted(bb.event.Event):
     pass
@@ -55,6 +62,7 @@ class Command:
         self.cooker = cooker
         self.cmds_sync = CommandsSync()
         self.cmds_async = CommandsAsync()
+        self.remotedatastores = bb.remotedata.RemoteDatastores(cooker)
 
         # FIXME Add lock for this
         self.currentAsyncCommand = None
@@ -298,6 +306,193 @@ class CommandsSync:
         command.cooker.updateConfigOpts(options, environment)
     updateConfig.needconfig = False
 
+    def parseConfiguration(self, command, params):
+        """Instruct bitbake to parse its configuration
+        NOTE: it is only necessary to call this if you aren't calling any normal action
+        (otherwise parsing is taken care of automatically)
+        """
+        command.cooker.parseConfiguration()
+    parseConfiguration.needconfig = False
+
+    def getLayerPriorities(self, command, params):
+        ret = []
+        # regex objects cannot be marshalled by xmlrpc
+        for collection, pattern, regex, pri in command.cooker.bbfile_config_priorities:
+            ret.append((collection, pattern, regex.pattern, pri))
+        return ret
+    getLayerPriorities.readonly = True
+
+    def getRecipes(self, command, params):
+        try:
+            mc = params[0]
+        except IndexError:
+            mc = ''
+        return list(command.cooker.recipecaches[mc].pkg_pn.items())
+    getRecipes.readonly = True
+
+    def getRecipeDepends(self, command, params):
+        try:
+            mc = params[0]
+        except IndexError:
+            mc = ''
+        return list(command.cooker.recipecaches[mc].deps.items())
+    getRecipeDepends.readonly = True
+
+    def getRecipeVersions(self, command, params):
+        try:
+            mc = params[0]
+        except IndexError:
+            mc = ''
+        return command.cooker.recipecaches[mc].pkg_pepvpr
+    getRecipeVersions.readonly = True
+
+    def getRuntimeDepends(self, command, params):
+        ret = []
+        try:
+            mc = params[0]
+        except IndexError:
+            mc = ''
+        rundeps = command.cooker.recipecaches[mc].rundeps
+        for key, value in rundeps.items():
+            if isinstance(value, defaultdict):
+                value = dict(value)
+            ret.append((key, value))
+        return ret
+    getRuntimeDepends.readonly = True
+
+    def getRuntimeRecommends(self, command, params):
+        ret = []
+        try:
+            mc = params[0]
+        except IndexError:
+            mc = ''
+        runrecs = command.cooker.recipecaches[mc].runrecs
+        for key, value in runrecs.items():
+            if isinstance(value, defaultdict):
+                value = dict(value)
+            ret.append((key, value))
+        return ret
+    getRuntimeRecommends.readonly = True
+
+    def getRecipeInherits(self, command, params):
+        try:
+            mc = params[0]
+        except IndexError:
+            mc = ''
+        return command.cooker.recipecaches[mc].inherits
+    getRecipeInherits.readonly = True
+
+    def getBbFilePriority(self, command, params):
+        try:
+            mc = params[0]
+        except IndexError:
+            mc = ''
+        return command.cooker.recipecaches[mc].bbfile_priority
+    getBbFilePriority.readonly = True
+
+    def getDefaultPreference(self, command, params):
+        try:
+            mc = params[0]
+        except IndexError:
+            mc = ''
+        return command.cooker.recipecaches[mc].pkg_dp
+    getDefaultPreference.readonly = True
+
+    def getSkippedRecipes(self, command, params):
+        # Return list sorted by reverse priority order
+        import bb.cache
+        skipdict = OrderedDict(sorted(command.cooker.skiplist.items(),
+                                      key=lambda x: (-command.cooker.collection.calc_bbfile_priority(bb.cache.virtualfn2realfn(x[0])[0]), x[0])))
+        return list(skipdict.items())
+    getSkippedRecipes.readonly = True
+
+    def getOverlayedRecipes(self, command, params):
+        return list(command.cooker.collection.overlayed.items())
+    getOverlayedRecipes.readonly = True
+
+    def getFileAppends(self, command, params):
+        fn = params[0]
+        return command.cooker.collection.get_file_appends(fn)
+    getFileAppends.readonly = True
+
+    def getAllAppends(self, command, params):
+        return command.cooker.collection.bbappends
+    getAllAppends.readonly = True
+
+    def findProviders(self, command, params):
+        return command.cooker.findProviders()
+    findProviders.readonly = True
+
+    def findBestProvider(self, command, params):
+        pn = params[0]
+        return command.cooker.findBestProvider(pn)
+    findBestProvider.readonly = True
+
+    def allProviders(self, command, params):
+        try:
+            mc = params[0]
+        except IndexError:
+            mc = ''
+        return list(bb.providers.allProviders(command.cooker.recipecaches[mc]).items())
+    allProviders.readonly = True
+
+    def getRuntimeProviders(self, command, params):
+        rprovide = params[0]
+        try:
+            mc = params[1]
+        except IndexError:
+            mc = ''
+        all_p = bb.providers.getRuntimeProviders(command.cooker.recipecaches[mc], rprovide)
+        if all_p:
+            best = bb.providers.filterProvidersRunTime(all_p, rprovide,
+                            command.cooker.data,
+                            command.cooker.recipecaches[mc])[0][0]
+        else:
+            best = None
+        return all_p, best
+    getRuntimeProviders.readonly = True
+
+    def dataStoreConnectorFindVar(self, command, params):
+        dsindex = params[0]
+        name = params[1]
+        datastore = command.remotedatastores[dsindex]
+        value = datastore._findVar(name)
+
+        if value:
+            content = value.get('_content', None)
+            if isinstance(content, bb.data_smart.DataSmart):
+                # Value is a datastore (e.g. BB_ORIGENV) - need to handle this carefully
+                idx = command.remotedatastores.check_store(content, True)
+                return {'_content': DataStoreConnectionHandle(idx), '_connector_origtype': 'DataStoreConnectionHandle'}
+            elif isinstance(content, set):
+                return {'_content': list(content), '_connector_origtype': 'set'}
+        return value
+    dataStoreConnectorFindVar.readonly = True
+
+    def dataStoreConnectorGetKeys(self, command, params):
+        dsindex = params[0]
+        datastore = command.remotedatastores[dsindex]
+        return list(datastore.keys())
+    dataStoreConnectorGetKeys.readonly = True
+
+    def dataStoreConnectorGetVarHistory(self, command, params):
+        dsindex = params[0]
+        name = params[1]
+        datastore = command.remotedatastores[dsindex]
+        return datastore.varhistory.variable(name)
+    dataStoreConnectorGetVarHistory.readonly = True
+
+    def dataStoreConnectorExpandPythonRef(self, command, params):
+        dsindex = params[0]
+        varname = params[1]
+        expr = params[2]
+        if dsindex:
+            datastore = self.dataStores[dsindex]
+        else:
+            datastore = command.cooker.data
+        varparse = bb.data_smart.VariableParse(varname, datastore)
+        return varparse.python_sub(expr)
+
 class CommandsAsync:
     """
     A class of asynchronous commands
diff --git a/bitbake/lib/bb/cooker.py b/bitbake/lib/bb/cooker.py
index 2614c4485a..48904a52d6 100644
--- a/bitbake/lib/bb/cooker.py
+++ b/bitbake/lib/bb/cooker.py
@@ -583,13 +583,12 @@ class BBCooker:
 
     def showVersions(self):
 
-        pkg_pn = self.recipecaches[''].pkg_pn
-        (latest_versions, preferred_versions) = bb.providers.findProviders(self.data, self.recipecaches[''], pkg_pn)
+        (latest_versions, preferred_versions) = self.findProviders()
 
         logger.plain("%-35s %25s %25s", "Recipe Name", "Latest Version", "Preferred Version")
         logger.plain("%-35s %25s %25s\n", "===========", "==============", "=================")
 
-        for p in sorted(pkg_pn):
+        for p in sorted(self.recipecaches[''].pkg_pn):
             pref = preferred_versions[p]
             latest = latest_versions[p]
 
@@ -1084,6 +1083,20 @@ class BBCooker:
         if matches:
             bb.event.fire(bb.event.FilesMatchingFound(filepattern, matches), self.data)
 
+    def findProviders(self, mc=''):
+        return bb.providers.findProviders(self.data, self.recipecaches[mc], self.recipecaches[mc].pkg_pn)
+
+    def findBestProvider(self, pn, mc=''):
+        if pn in self.recipecaches[mc].providers:
+            filenames = self.recipecaches[mc].providers[pn]
+            eligible, foundUnique = bb.providers.filterProviders(filenames, pn, self.expanded_data, self.recipecaches[mc])
+            filename = eligible[0]
+            return None, None, None, filename
+        elif pn in self.recipecaches[mc].pkg_pn:
+            return bb.providers.findBestProvider(pn, self.data, self.recipecaches[mc], self.recipecaches[mc].pkg_pn)
+        else:
+            return None, None, None, None
+
     def findConfigFiles(self, varname):
         """
         Find config files which are appropriate values for varname.
diff --git a/bitbake/lib/bb/main.py b/bitbake/lib/bb/main.py
index a544c0aecb..443f5ec2fd 100755
--- a/bitbake/lib/bb/main.py
+++ b/bitbake/lib/bb/main.py
@@ -389,12 +389,8 @@ def bitbake_main(configParams, configuration):
     except:
         pass
 
-
     configuration.setConfigParameters(configParams)
 
-    ui_module = import_extension_module(bb.ui, configParams.ui, 'main')
-    servermodule = import_extension_module(bb.server, configParams.servertype, 'BitBakeServer')
-
     if configParams.server_only:
         if configParams.servertype != "xmlrpc":
             raise BBMainException("FATAL: If '--server-only' is defined, we must set the "
@@ -442,6 +438,31 @@ def bitbake_main(configParams, configuration):
     bb.msg.init_msgconfig(configParams.verbose, configuration.debug,
                           configuration.debug_domains)
 
+    server, server_connection, ui_module = setup_bitbake(configParams, configuration)
+    if server_connection is None and configParams.kill_server:
+        return 0
+
+    if not configParams.server_only:
+        if configParams.status_only:
+            server_connection.terminate()
+            return 0
+
+        try:
+            return ui_module.main(server_connection.connection, server_connection.events,
+                                  configParams)
+        finally:
+            bb.event.ui_queue = []
+            server_connection.terminate()
+    else:
+        print("Bitbake server address: %s, server port: %s" % (server.serverImpl.host,
+                                                               server.serverImpl.port))
+        if configParams.foreground:
+            server.serverImpl.serve_forever()
+        return 0
+
+    return 1
+
+def setup_bitbake(configParams, configuration, extrafeatures=None):
     # Ensure logging messages get sent to the UI as events
     handler = bb.event.LogHandler()
     if not configParams.status_only:
@@ -451,8 +472,11 @@ def bitbake_main(configParams, configuration):
     # Clear away any spurious environment variables while we stoke up the cooker
     cleanedvars = bb.utils.clean_environment()
 
-    featureset = []
-    if not configParams.server_only:
+    if configParams.server_only:
+        featureset = []
+        ui_module = None
+    else:
+        ui_module = import_extension_module(bb.ui, configParams.ui, 'main')
         # Collect the feature set for the UI
         featureset = getattr(ui_module, "featureSet", [])
 
@@ -463,11 +487,15 @@ def bitbake_main(configParams, configuration):
                 setattr(configuration, "%s_server" % param, value)
                 param = "%s_server" % param
 
-    if not configParams.remote_server:
-        # we start a server with a given configuration
-        server = start_server(servermodule, configParams, configuration, featureset)
-        bb.event.ui_queue = []
-    else:
+    if extrafeatures:
+        for feature in extrafeatures:
+            if not feature in featureset:
+                featureset.append(feature)
+
+    servermodule = import_extension_module(bb.server,
+                                            configParams.servertype,
+                                            'BitBakeServer')
+    if configParams.remote_server:
         if os.getenv('BBSERVER') == 'autostart':
             if configParams.remote_server == 'autostart' or \
                not servermodule.check_connection(configParams.remote_server, timeout=2):
@@ -475,14 +503,19 @@ def bitbake_main(configParams, configuration):
                 srv = start_server(servermodule, configParams, configuration, featureset)
                 configParams.remote_server = '%s:%d' % tuple(configuration.interface)
                 bb.event.ui_queue = []
-
         # we start a stub server that is actually a XMLRPClient that connects to a real server
+        from bb.server.xmlrpc import BitBakeXMLRPCClient
         server = servermodule.BitBakeXMLRPCClient(configParams.observe_only,
                                                   configParams.xmlrpctoken)
         server.saveConnectionDetails(configParams.remote_server)
+    else:
+        # we start a server with a given configuration
+        server = start_server(servermodule, configParams, configuration, featureset)
+        bb.event.ui_queue = []
 
-
-    if not configParams.server_only:
+    if configParams.server_only:
+        server_connection = None
+    else:
         try:
             server_connection = server.establishConnection(featureset)
         except Exception as e:
@@ -491,7 +524,7 @@ def bitbake_main(configParams, configuration):
         if configParams.kill_server:
             server_connection.connection.terminateServer()
             bb.event.ui_queue = []
-            return 0
+            return None, None, None
 
         server_connection.setupEventQueue()
 
@@ -501,22 +534,4 @@ def bitbake_main(configParams, configuration):
 
         logger.removeHandler(handler)
 
-
-        if configParams.status_only:
-            server_connection.terminate()
-            return 0
-
-        try:
-            return ui_module.main(server_connection.connection, server_connection.events,
-                                  configParams)
-        finally:
-            bb.event.ui_queue = []
-            server_connection.terminate()
-    else:
-        print("Bitbake server address: %s, server port: %s" % (server.serverImpl.host,
-                                                               server.serverImpl.port))
-        if configParams.foreground:
-            server.serverImpl.serve_forever()
-        return 0
-
-    return 1
+    return server, server_connection, ui_module
diff --git a/bitbake/lib/bb/remotedata.py b/bitbake/lib/bb/remotedata.py
new file mode 100644
index 0000000000..932ee430ea
--- /dev/null
+++ b/bitbake/lib/bb/remotedata.py
@@ -0,0 +1,74 @@
+"""
+BitBake 'remotedata' module
+
+Provides support for using a datastore from the bitbake client
+"""
+
+# Copyright (C) 2016  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 bb.data
+
+class RemoteDatastores:
+    """Used on the server side to manage references to server-side datastores"""
+    def __init__(self, cooker):
+        self.cooker = cooker
+        self.datastores = {}
+        self.locked = []
+        self.nextindex = 1
+
+    def __len__(self):
+        return len(self.datastores)
+
+    def __getitem__(self, key):
+        if key is None:
+            return self.cooker.data
+        else:
+            return self.datastores[key]
+
+    def items(self):
+        return self.datastores.items()
+
+    def store(self, d, locked=False):
+        """
+        Put a datastore into the collection. If locked=True then the datastore
+        is understood to be managed externally and cannot be released by calling
+        release().
+        """
+        idx = self.nextindex
+        self.datastores[idx] = d
+        if locked:
+            self.locked.append(idx)
+        self.nextindex += 1
+        return idx
+
+    def check_store(self, d, locked=False):
+        """
+        Put a datastore into the collection if it's not already in there;
+        in either case return the index
+        """
+        for key, val in self.datastores.items():
+            if val is d:
+                idx = key
+                break
+        else:
+            idx = self.store(d, locked)
+        return idx
+
+    def release(self, idx):
+        """Discard a datastore in the collection"""
+        if idx in self.locked:
+            raise Exception('Tried to release locked datastore %d' % idx)
+        del self.datastores[idx]
diff --git a/bitbake/lib/bb/tinfoil.py b/bitbake/lib/bb/tinfoil.py
index 8899e861c3..459f6c1286 100644
--- a/bitbake/lib/bb/tinfoil.py
+++ b/bitbake/lib/bb/tinfoil.py
@@ -1,6 +1,6 @@
 # tinfoil: a simple wrapper around cooker for bitbake-based command-line utilities
 #
-# Copyright (C) 2012 Intel Corporation
+# Copyright (C) 2012-2016 Intel Corporation
 # Copyright (C) 2011 Mentor Graphics Corporation
 #
 # This program is free software; you can redistribute it and/or modify
@@ -17,47 +17,172 @@
 # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 
 import logging
-import warnings
 import os
 import sys
+import atexit
+import re
+from collections import OrderedDict, defaultdict
 
 import bb.cache
 import bb.cooker
 import bb.providers
 import bb.utils
-from bb.cooker import state, BBCooker, CookerFeatures
+import bb.command
 from bb.cookerdata import CookerConfiguration, ConfigParameters
+from bb.main import setup_bitbake, BitBakeConfigParameters, BBMainException
 import bb.fetch2
 
+
+# We need this in order to shut down the connection to the bitbake server,
+# otherwise the process will never properly exit
+_server_connections = []
+def _terminate_connections():
+    for connection in _server_connections:
+        connection.terminate()
+atexit.register(_terminate_connections)
+
+class TinfoilUIException(Exception):
+    """Exception raised when the UI returns non-zero from its main function"""
+    def __init__(self, returncode):
+        self.returncode = returncode
+    def __repr__(self):
+        return 'UI module main returned %d' % self.returncode
+
+class TinfoilCommandFailed(Exception):
+    """Exception raised when run_command fails"""
+
+class TinfoilDataStoreConnector:
+
+    def __init__(self, tinfoil, dsindex):
+        self.tinfoil = tinfoil
+        self.dsindex = dsindex
+    def getVar(self, name):
+        value = self.tinfoil.run_command('dataStoreConnectorFindVar', self.dsindex, name)
+        if isinstance(value, dict):
+            if '_connector_origtype' in value:
+                value['_content'] = self.tinfoil._reconvert_type(value['_content'], value['_connector_origtype'])
+                del value['_connector_origtype']
+
+        return value
+    def getKeys(self):
+        return set(self.tinfoil.run_command('dataStoreConnectorGetKeys', self.dsindex))
+    def getVarHistory(self, name):
+        return self.tinfoil.run_command('dataStoreConnectorGetVarHistory', self.dsindex, name)
+    def expandPythonRef(self, varname, expr):
+        ret = self.tinfoil.run_command('dataStoreConnectorExpandPythonRef', self.dsindex, varname, expr)
+        return ret
+    def setVar(self, varname, value):
+        if self.dsindex is None:
+            self.tinfoil.run_command('setVariable', varname, value)
+        else:
+            # Not currently implemented - indicate that setting should
+            # be redirected to local side
+            return True
+
+class TinfoilCookerAdapter:
+    """
+    Provide an adapter for existing code that expects to access a cooker object via Tinfoil,
+    since now Tinfoil is on the client side it no longer has direct access.
+    """
+
+    class TinfoilCookerCollectionAdapter:
+        """ cooker.collection adapter """
+        def __init__(self, tinfoil):
+            self.tinfoil = tinfoil
+        def get_file_appends(self, fn):
+            return self.tinfoil.run_command('getFileAppends', fn)
+        def __getattr__(self, name):
+            if name == 'overlayed':
+                return self.tinfoil.get_overlayed_recipes()
+            elif name == 'bbappends':
+                return self.tinfoil.run_command('getAllAppends')
+            else:
+                raise AttributeError("%s instance has no attribute '%s'" % (self.__class__.__name__, name))
+
+    class TinfoilRecipeCacheAdapter:
+        """ cooker.recipecache adapter """
+        def __init__(self, tinfoil):
+            self.tinfoil = tinfoil
+            self._cache = {}
+
+        def get_pkg_pn_fn(self):
+            pkg_pn = defaultdict(list, self.tinfoil.run_command('getRecipes') or [])
+            pkg_fn = {}
+            for pn, fnlist in pkg_pn.items():
+                for fn in fnlist:
+                    pkg_fn[fn] = pn
+            self._cache['pkg_pn'] = pkg_pn
+            self._cache['pkg_fn'] = pkg_fn
+
+        def __getattr__(self, name):
+            # Grab these only when they are requested since they aren't always used
+            if name in self._cache:
+                return self._cache[name]
+            elif name == 'pkg_pn':
+                self.get_pkg_pn_fn()
+                return self._cache[name]
+            elif name == 'pkg_fn':
+                self.get_pkg_pn_fn()
+                return self._cache[name]
+            elif name == 'deps':
+                attrvalue = defaultdict(list, self.tinfoil.run_command('getRecipeDepends') or [])
+            elif name == 'rundeps':
+                attrvalue = defaultdict(lambda: defaultdict(list), self.tinfoil.run_command('getRuntimeDepends') or [])
+            elif name == 'runrecs':
+                attrvalue = defaultdict(lambda: defaultdict(list), self.tinfoil.run_command('getRuntimeRecommends') or [])
+            elif name == 'pkg_pepvpr':
+                attrvalue = self.tinfoil.run_command('getRecipeVersions') or {}
+            elif name == 'inherits':
+                attrvalue = self.tinfoil.run_command('getRecipeInherits') or {}
+            elif name == 'bbfile_priority':
+                attrvalue = self.tinfoil.run_command('getBbFilePriority') or {}
+            elif name == 'pkg_dp':
+                attrvalue = self.tinfoil.run_command('getDefaultPreference') or {}
+            else:
+                raise AttributeError("%s instance has no attribute '%s'" % (self.__class__.__name__, name))
+
+            self._cache[name] = attrvalue
+            return attrvalue
+
+    def __init__(self, tinfoil):
+        self.tinfoil = tinfoil
+        self.collection = self.TinfoilCookerCollectionAdapter(tinfoil)
+        self.recipecaches = {}
+        # FIXME all machines
+        self.recipecaches[''] = self.TinfoilRecipeCacheAdapter(tinfoil)
+        self._cache = {}
+    def __getattr__(self, name):
+        # Grab these only when they are requested since they aren't always used
+        if name in self._cache:
+            return self._cache[name]
+        elif name == 'skiplist':
+            attrvalue = self.tinfoil.get_skipped_recipes()
+        elif name == 'bbfile_config_priorities':
+            ret = self.tinfoil.run_command('getLayerPriorities')
+            bbfile_config_priorities = []
+            for collection, pattern, regex, pri in ret:
+                bbfile_config_priorities.append((collection, pattern, re.compile(regex), pri))
+
+            attrvalue = bbfile_config_priorities
+        else:
+            raise AttributeError("%s instance has no attribute '%s'" % (self.__class__.__name__, name))
+
+        self._cache[name] = attrvalue
+        return attrvalue
+
+    def findBestProvider(self, pn):
+        return self.tinfoil.find_best_provider(pn)
+
+
 class Tinfoil:
-    def __init__(self, output=sys.stdout, tracking=False):
-        # Needed to avoid deprecation warnings with python 2.6
-        warnings.filterwarnings("ignore", category=DeprecationWarning)
 
-        # Set up logging
+    def __init__(self, output=sys.stdout, tracking=False):
         self.logger = logging.getLogger('BitBake')
-        self._log_hdlr = logging.StreamHandler(output)
-        bb.msg.addDefaultlogFilter(self._log_hdlr)
-        format = bb.msg.BBLogFormatter("%(levelname)s: %(message)s")
-        if output.isatty():
-            format.enable_color()
-        self._log_hdlr.setFormatter(format)
-        self.logger.addHandler(self._log_hdlr)
-
-        self.config = CookerConfiguration()
-        configparams = TinfoilConfigParameters(parse_only=True)
-        self.config.setConfigParameters(configparams)
-        self.config.setServerRegIdleCallback(self.register_idle_function)
-        features = []
-        if tracking:
-            features.append(CookerFeatures.BASEDATASTORE_TRACKING)
-        self.cooker = BBCooker(self.config, features)
-        self.config_data = self.cooker.data
-        bb.providers.logger.setLevel(logging.ERROR)
-        self.cooker_data = None
-
-    def register_idle_function(self, function, data):
-        pass
+        self.config_data = None
+        self.cooker = None
+        self.tracking = tracking
+        self.ui_module = None
+        self.server_connection = None
 
     def __enter__(self):
         return self
@@ -65,30 +190,120 @@ class Tinfoil:
     def __exit__(self, type, value, traceback):
         self.shutdown()
 
-    def parseRecipes(self):
-        sys.stderr.write("Parsing recipes..")
-        self.logger.setLevel(logging.WARNING)
+    def prepare(self, config_only=False, config_params=None, quiet=0):
+        if self.tracking:
+            extrafeatures = [bb.cooker.CookerFeatures.BASEDATASTORE_TRACKING]
+        else:
+            extrafeatures = []
 
-        try:
-            while self.cooker.state in (state.initial, state.parsing):
-                self.cooker.updateCache()
-        except KeyboardInterrupt:
-            self.cooker.shutdown()
-            self.cooker.updateCache()
-            sys.exit(2)
+        if not config_params:
+            config_params = TinfoilConfigParameters(config_only=config_only, quiet=quiet)
 
-        self.logger.setLevel(logging.INFO)
-        sys.stderr.write("done.\n")
+        cookerconfig = CookerConfiguration()
+        cookerconfig.setConfigParameters(config_params)
 
-        self.cooker_data = self.cooker.recipecaches['']
+        server, self.server_connection, ui_module = setup_bitbake(config_params,
+                            cookerconfig,
+                            extrafeatures)
 
-    def prepare(self, config_only = False):
-        if not self.cooker_data:
+        self.ui_module = ui_module
+
+        if self.server_connection:
+            _server_connections.append(self.server_connection)
             if config_only:
-                self.cooker.parseConfiguration()
-                self.cooker_data = self.cooker.recipecaches['']
+                config_params.updateToServer(self.server_connection.connection, os.environ.copy())
+                self.run_command('parseConfiguration')
             else:
-                self.parseRecipes()
+                self.run_actions(config_params)
+
+            self.config_data = bb.data.init()
+            connector = TinfoilDataStoreConnector(self, None)
+            self.config_data.setVar('_remote_data', connector)
+            self.cooker = TinfoilCookerAdapter(self)
+            self.cooker_data = self.cooker.recipecaches['']
+        else:
+            raise Exception('Failed to start bitbake server')
+
+    def run_actions(self, config_params):
+        """
+        Run the actions specified in config_params through the UI.
+        """
+        ret = self.ui_module.main(self.server_connection.connection, self.server_connection.events, config_params)
+        if ret:
+            raise TinfoilUIException(ret)
+
+    def parseRecipes(self):
+        """
+        Force a parse of all recipes. Normally you should specify
+        config_only=False when calling prepare() instead of using this
+        function; this function is designed for situations where you need
+        to initialise Tinfoil and use it with config_only=True first and
+        then conditionally call this function to parse recipes later.
+        """
+        config_params = TinfoilConfigParameters(config_only=False)
+        self.run_actions(config_params)
+
+    def run_command(self, command, *params):
+        """
+        Run a command on the server (as implemented in bb.command).
+        Note that there are two types of command - synchronous and
+        asynchronous; in order to receive the results of asynchronous
+        commands you will need to set an appropriate event mask
+        using set_event_mask() and listen for the result using
+        wait_event() - with the correct event mask you'll at least get
+        bb.command.CommandCompleted and possibly other events before
+        that depending on the command.
+        """
+        if not self.server_connection:
+            raise Exception('Not connected to server (did you call .prepare()?)')
+
+        commandline = [command]
+        if params:
+            commandline.extend(params)
+        result = self.server_connection.connection.runCommand(commandline)
+        if result[1]:
+            raise TinfoilCommandFailed(result[1])
+        return result[0]
+
+    def set_event_mask(self, eventlist):
+        """Set the event mask which will be applied within wait_event()"""
+        if not self.server_connection:
+            raise Exception('Not connected to server (did you call .prepare()?)')
+        llevel, debug_domains = bb.msg.constructLogOptions()
+        ret = self.run_command('setEventMask', self.server_connection.connection.getEventHandle(), llevel, debug_domains, eventlist)
+        if not ret:
+            raise Exception('setEventMask failed')
+
+    def wait_event(self, timeout=0):
+        """
+        Wait for an event from the server for the specified time.
+        A timeout of 0 means don't wait if there are no events in the queue.
+        Returns the next event in the queue or None if the timeout was
+        reached. Note that in order to recieve any events you will
+        first need to set the internal event mask using set_event_mask()
+        (otherwise whatever event mask the UI set up will be in effect).
+        """
+        if not self.server_connection:
+            raise Exception('Not connected to server (did you call .prepare()?)')
+        return self.server_connection.events.waitEvent(timeout)
+
+    def get_overlayed_recipes(self):
+        return defaultdict(list, self.run_command('getOverlayedRecipes'))
+
+    def get_skipped_recipes(self):
+        return OrderedDict(self.run_command('getSkippedRecipes'))
+
+    def get_all_providers(self):
+        return defaultdict(list, self.run_command('allProviders'))
+
+    def find_providers(self):
+        return self.run_command('findProviders')
+
+    def find_best_provider(self, pn):
+        return self.run_command('findBestProvider', pn)
+
+    def get_runtime_providers(self, rdep):
+        return self.run_command('getRuntimeProviders', rdep)
 
     def parse_recipe_file(self, fn, appends=True, appendlist=None, config_data=None):
         """
@@ -126,22 +341,72 @@ class Tinfoil:
             envdata = parser.loadDataFull(fn, appendfiles)
         return envdata
 
+    def build_file(self, buildfile, task):
+        """
+        Runs the specified task for just a single recipe (i.e. no dependencies).
+        This is equivalent to bitbake -b.
+        """
+        return self.run_command('buildFile', buildfile, task)
+
     def shutdown(self):
-        self.cooker.shutdown(force=True)
-        self.cooker.post_serve()
-        self.cooker.unlockBitbake()
-        self.logger.removeHandler(self._log_hdlr)
+        if self.server_connection:
+            self.run_command('clientComplete')
+            _server_connections.remove(self.server_connection)
+            bb.event.ui_queue = []
+            self.server_connection.terminate()
+            self.server_connection = None
 
-class TinfoilConfigParameters(ConfigParameters):
+    def _reconvert_type(self, obj, origtypename):
+        """
+        Convert an object back to the right type, in the case
+        that marshalling has changed it (especially with xmlrpc)
+        """
+        supported_types = {
+            'set': set,
+            'DataStoreConnectionHandle': bb.command.DataStoreConnectionHandle,
+        }
 
-    def __init__(self, **options):
+        origtype = supported_types.get(origtypename, None)
+        if origtype is None:
+            raise Exception('Unsupported type "%s"' % origtypename)
+        if type(obj) == origtype:
+            newobj = obj
+        elif isinstance(obj, dict):
+            # New style class
+            newobj = origtype()
+            for k,v in obj.items():
+                setattr(newobj, k, v)
+        else:
+            # Assume we can coerce the type
+            newobj = origtype(obj)
+
+        if isinstance(newobj, bb.command.DataStoreConnectionHandle):
+            connector = TinfoilDataStoreConnector(self, newobj.dsindex)
+            newobj = bb.data.init()
+            newobj.setVar('_remote_data', connector)
+
+        return newobj
+
+
+class TinfoilConfigParameters(BitBakeConfigParameters):
+
+    def __init__(self, config_only, **options):
         self.initial_options = options
-        super(TinfoilConfigParameters, self).__init__()
+        # Apply some sane defaults
+        if not 'parse_only' in options:
+            self.initial_options['parse_only'] = not config_only
+        #if not 'status_only' in options:
+        #    self.initial_options['status_only'] = config_only
+        if not 'ui' in options:
+            self.initial_options['ui'] = 'knotty'
+        if not 'argv' in options:
+            self.initial_options['argv'] = []
 
-    def parseCommandLine(self, argv=sys.argv):
-        class DummyOptions:
-            def __init__(self, initial_options):
-                for key, val in initial_options.items():
-                    setattr(self, key, val)
+        super(TinfoilConfigParameters, self).__init__()
 
-        return DummyOptions(self.initial_options), None
+    def parseCommandLine(self, argv=None):
+        # We don't want any parameters parsed from the command line
+        opts = super(TinfoilConfigParameters, self).parseCommandLine([])
+        for key, val in self.initial_options.items():
+            setattr(opts[0], key, val)
+        return opts
diff --git a/bitbake/lib/bblayers/query.py b/bitbake/lib/bblayers/query.py
index 29491163c2..5def7179ce 100644
--- a/bitbake/lib/bblayers/query.py
+++ b/bitbake/lib/bblayers/query.py
@@ -5,8 +5,6 @@ import sys
 import os
 import re
 
-import bb.cache
-import bb.providers
 import bb.utils
 
 from bblayers.common import LayerPlugin
@@ -122,15 +120,13 @@ skipped recipes will also be listed, with a " (skipped)" suffix.
                     sys.exit(1)
 
         pkg_pn = self.tinfoil.cooker.recipecaches[''].pkg_pn
-        (latest_versions, preferred_versions) = bb.providers.findProviders(self.tinfoil.config_data, self.tinfoil.cooker.recipecaches[''], pkg_pn)
-        allproviders = bb.providers.allProviders(self.tinfoil.cooker.recipecaches[''])
+        (latest_versions, preferred_versions) = self.tinfoil.find_providers()
+        allproviders = self.tinfoil.get_all_providers()
 
         # Ensure we list skipped recipes
         # We are largely guessing about PN, PV and the preferred version here,
         # but we have no choice since skipped recipes are not fully parsed
         skiplist = list(self.tinfoil.cooker.skiplist.keys())
-        skiplist.sort( key=lambda fileitem: self.tinfoil.cooker.collection.calc_bbfile_priority(fileitem) )
-        skiplist.reverse()
         for fn in skiplist:
             recipe_parts = os.path.splitext(os.path.basename(fn))[0].split('_')
             p = recipe_parts[0]
@@ -265,10 +261,7 @@ Lists recipes with the bbappends that apply to them as subitems.
     def show_appends_for_pn(self, pn):
         filenames = self.tinfoil.cooker_data.pkg_pn[pn]
 
-        best = bb.providers.findBestProvider(pn,
-                                             self.tinfoil.config_data,
-                                             self.tinfoil.cooker_data,
-                                             self.tinfoil.cooker_data.pkg_pn)
+        best = self.tinfoil.find_best_provider(pn)
         best_filename = os.path.basename(best[3])
 
         return self.show_appends_output(filenames, best_filename)
@@ -336,10 +329,7 @@ NOTE: .bbappend files can impact the dependencies.
             deps = self.tinfoil.cooker_data.deps[f]
             for pn in deps:
                 if pn in self.tinfoil.cooker_data.pkg_pn:
-                    best = bb.providers.findBestProvider(pn,
-                            self.tinfoil.config_data,
-                            self.tinfoil.cooker_data,
-                            self.tinfoil.cooker_data.pkg_pn)
+                    best = self.tinfoil.find_best_provider(pn)
                     self.check_cross_depends("DEPENDS", layername, f, best[3], args.filenames, ignore_layers)
 
             # The RDPENDS
@@ -352,14 +342,11 @@ NOTE: .bbappend files can impact the dependencies.
                     sorted_rdeps[k2] = 1
             all_rdeps = sorted_rdeps.keys()
             for rdep in all_rdeps:
-                all_p = bb.providers.getRuntimeProviders(self.tinfoil.cooker_data, rdep)
+                all_p, best = self.tinfoil.get_runtime_providers(rdep)
                 if all_p:
                     if f in all_p:
                         # The recipe provides this one itself, ignore
                         continue
-                    best = bb.providers.filterProvidersRunTime(all_p, rdep,
-                                    self.tinfoil.config_data,
-                                    self.tinfoil.cooker_data)[0][0]
                     self.check_cross_depends("RDEPENDS", layername, f, best, args.filenames, ignore_layers)
 
             # The RRECOMMENDS
@@ -372,14 +359,11 @@ NOTE: .bbappend files can impact the dependencies.
                     sorted_rrecs[k2] = 1
             all_rrecs = sorted_rrecs.keys()
             for rrec in all_rrecs:
-                all_p = bb.providers.getRuntimeProviders(self.tinfoil.cooker_data, rrec)
+                all_p, best = self.tinfoil.get_runtime_providers(rrec)
                 if all_p:
                     if f in all_p:
                         # The recipe provides this one itself, ignore
                         continue
-                    best = bb.providers.filterProvidersRunTime(all_p, rrec,
-                                    self.tinfoil.config_data,
-                                    self.tinfoil.cooker_data)[0][0]
                     self.check_cross_depends("RRECOMMENDS", layername, f, best, args.filenames, ignore_layers)
 
             # The inherit class