"""
BitBake 'Command' module
Provide an interface to interact with the bitbake server through 'commands'
"""
# Copyright (C) 2006-2007 Richard Purdie
#
# 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.
"""
The bitbake server takes 'commands' from its UI/commandline.
Commands are either synchronous or asynchronous.
Async commands return data to the client in the form of events.
Sync commands must only return data through the function return value
and must not trigger events, directly or indirectly.
Commands are queued in a CommandQueue
"""
import bb.event
import bb.cooker
class CommandCompleted(bb.event.Event):
pass
class CommandExit(bb.event.Event):
def __init__(self, exitcode):
bb.event.Event.__init__(self)
self.exitcode = int(exitcode)
class CommandFailed(CommandExit):
def __init__(self, message):
self.error = message
CommandExit.__init__(self, 1)
class CommandError(Exception):
pass
class Command:
"""
A queue of asynchronous commands for bitbake
"""
def __init__(self, cooker):
self.cooker = cooker
self.cmds_sync = CommandsSync()
self.cmds_async = CommandsAsync()
# FIXME Add lock for this
self.currentAsyncCommand = None
def runCommand(self, commandline, ro_only = False):
command = commandline.pop(0)
if hasattr(CommandsSync, command):
# Can run synchronous commands straight away
command_method = getattr(self.cmds_sync, command)
if ro_only:
if not hasattr(command_method, 'readonly') or False == getattr(command_method, 'readonly'):
return None, "Not able to execute not readonly commands in readonly mode"
try:
if getattr(command_method, 'needconfig', False):
self.cooker.updateCacheSync()
result = command_method(self, commandline)
except CommandError as exc:
return None, exc.args[0]
except (Exception, SystemExit):
import traceback
return None, traceback.format_exc()
else:
return result, None
if self.currentAsyncCommand is not None:
return None, "Busy (%s in progress)" % self.currentAsyncCommand[0]
if command not in CommandsAsync.__dict__:
return None, "No such command"
self.currentAsyncCommand = (command, commandline)
self.cooker.configuration.server_register_idlecallback(self.cooker.runCommands, self.cooker)
return True, None
def runAsyncCommand(self):
try:
if self.cooker.state in (bb.cooker.state.error, bb.cooker.state.shutdown, bb.cooker.state.forceshutdown):
# updateCache will trigger a shutdown of the parser
# and then raise BBHandledException triggering an exit
self.cooker.updateCache()
return False
if self.currentAsyncCommand is not None:
(command, options) = self.currentAsyncCommand
commandmethod = getattr(CommandsAsync, command)
needcache = getattr( commandmethod, "needcache" )
if needcache and self.cooker.state != bb.cooker.state.running:
self.cooker.updateCache()
return True
else:
commandmethod(self.cmds_async, self, options)
return False
else:
return False
except KeyboardInterrupt as exc:
self.finishAsyncCommand("Interrupted")
return False
except SystemExit as exc:
arg = exc.args[0]
if isinstance(arg, str):
self.finishAsyncCommand(arg)
else:
self.finishAsyncCommand("Exited with %s" % arg)
return False
except Exception as exc:
import traceback
if isinstance(exc, bb.BBHandledException):
self.finishAsyncCommand("")
else:
self.finishAsyncCommand(traceback.format_exc())
return False
def finishAsyncCommand(self, msg=None, code=None):
if msg or msg == "":
bb.event.fire(CommandFailed(msg), self.cooker.expanded_data)
elif code:
bb.event.fire(CommandExit(code), self.cooker.expanded_data)
else:
bb.event.fire(CommandCompleted(), self.cooker.expanded_data)
self.currentAsyncCommand = None
self.cooker.finishcommand()
class CommandsSync:
"""
A class of synchronous commands
These should run quickly so as not to hurt interactive performance.
These must not influence any running synchronous command.
"""
def stateShutdown(self, command, params):
"""
Trigger cooker 'shutdown' mode
"""
command.cooker.shutdown(False)
def stateForceShutdown(self, command, params):
"""
Stop the cooker
"""
command.cooker.shutdown(True)
def getAllKeysWithFlags(self, command, params):
"""
Returns a dump of the global state. Call with
variable flags to be retrieved as params.
"""
flaglist = params[0]
return command.cooker.getAllKeysWithFlags(flaglist)
getAllKeysWithFlags.readonly = True
def getVariable(self, command, params):
"""
Read the value of a variable from data
"""
varname = params[0]
expand = True
if len(params) > 1:
expand = (params[1] == "True")
return command.cooker.data.getVar(varname, expand)
getVariable.readonly = True
def setVariable(self, command, params):
"""
Set the value of variable in data
"""
varname = params[0]
value = str(params[1])
command.cooker.data.setVar(varname, value)
def getSetVariable(self, command, params):
"""
Read the value of a variable from data and set it into the datastore
which effectively expands and locks the value.
"""
varname = params[0]
result = self.getVariable(command, params)
command.cooker.data.setVar(varname, result)
return result
def setConfig(self, command, params):
"""
Set the value of variable in configuration
"""
varname = params[0]
value = str(params[1])
setattr(command.cooker.configuration, varname, value)
def enableDataTracking(self, command, params):
"""
Enable history tracking for variables
"""
command.cooker.enableDataTracking()
def disableDataTracking(self, command, params):
"""
Disable history tracking for variables
"""
command.cooker.disableDataTracking()
def setPrePostConfFiles(self, command, params):
prefiles = params[0].split()
postfiles = params[1].split()
command.cooker.configuration.prefile = prefiles
command.cooker.configuration.postfile = postfiles
setPrePostConfFiles.needconfig = False
def getCpuCount(self, command, params):
"""
Get the CPU count on the bitbake server
"""
return bb.utils.cpu_count()
getCpuCount.readonly = True
getCpuCount.needconfig = False
def matchFile(self, command, params):
fMatch = params[0]
return command.cooker.matchFile(fMatch)
matchFile.needconfig = False
def generateNewImage(self, command, params):
image = params[0]
base_image = params[1]
package_queue = params[2]
timestamp = params[3]
description = params[4]
return command.cooker.generateNewImage(image, base_image,
package_queue, timestamp, description)
def ensureDir(self, command, params):
directory = params[0]
bb.utils.mkdirhier(directory)
ensureDir.needconfig = False
def setVarFile(self, command, params):
"""
Save a variable in a file; used for saving in a configuration file
"""
var = params[0]
val = params[1]
default_file = params[2]
op = params[3]
command.cooker.modifyConfigurationVar(var, val, default_file, op)
setVarFile.needconfig = False
def removeVarFile(self, command, params):
"""
Remove a variable declaration from a file
"""
var = params[0]
command.cooker.removeConfigurationVar(var)
removeVarFile.needconfig = False
def createConfigFile(self, command, params):
"""
Create an extra configuration file
"""
name = params[0]
command.cooker.createConfigFile(name)
createConfigFile.needconfig = False
def setEventMask(self, command, params):
handlerNum = params[0]
llevel = params[1]
debug_domains = params[2]
mask = params[3]
return bb.event.set_UIHmask(handlerNum, llevel, debug_domains, mask)
setEventMask.needconfig = False
setEventMask.readonly = True
def setFeatures(self, command, params):
"""
Set the cooker features to include the passed list of features
"""
features = params[0]
command.cooker.setFeatures(features)
setFeatures.needconfig = False
# although we change the internal state of the cooker, this is transparent since
# we always take and leave the cooker in state.initial
setFeatures.readonly = True
def updateConfig(self, command, params):
options = params[0]
environment = params[1]
command.cooker.updateConfigOpts(options, environment)
updateConfig.needconfig = False
class CommandsAsync:
"""
A class of asynchronous commands
These functions communicate via generated events.
Any function that requires metadata parsing should be here.
"""
def buildFile(self, command, params):
"""
Build a single specified .bb file
"""
bfile = params[0]
task = params[1]
command.cooker.buildFile(bfile, task)
buildFile.needcache = False
def buildTargets(self, command, params):
"""
Build a set of targets
"""
pkgs_to_build = params[0]
task = params[1]
command.cooker.buildTargets(pkgs_to_build, task)
buildTargets.needcache = True
def generateDepTreeEvent(self, command, params):
"""
Generate an event containing the dependency information
"""
pkgs_to_build = params[0]
task = params[1]
command.cooker.generateDepTreeEvent(pkgs_to_build, task)
command.finishAsyncCommand()
generateDepTreeEvent.needcache = True
def generateDotGraph(self, command, params):
"""
Dump dependency information to disk as .dot files
"""
pkgs_to_build = params[0]
task = params[1]
command.cooker.generateDotGraphFiles(pkgs_to_build, task)
command.finishAsyncCommand()
generateDotGraph.needcache = True
def generateTargetsTree(self, command, params):
"""
Generate a tree of buildable targets.
If klass is provided ensure all recipes that inherit the class are
included in the package list.
If pkg_list provided use that list (plus any extras brought in by
klass) rather than generating a tree for all packages.
"""
klass = params[0]
pkg_list = params[1]
command.cooker.generateTargetsTree(klass, pkg_list)
command.finishAsyncCommand()
generateTargetsTree.needcache = True
def findCoreBaseFiles(self, command, params):
"""
Find certain files in COREBASE directory. i.e. Layers
"""
subdir = params[0]
filename = params[1]
command.cooker.findCoreBaseFiles(subdir, filename)
command.finishAsyncCommand()
findCoreBaseFiles.needcache = False
def findConfigFiles(self, command, params):
"""
Find config files which provide appropriate values
for the passed configuration variable. i.e. MACHINE
"""
varname = params[0]
command.cooker.findConfigFiles(varname)
command.finishAsyncCommand()
findConfigFiles.needcache = False
def findFilesMatchingInDir(self, command, params):
"""
Find implementation files matching the specified pattern
in the requested subdirectory of a BBPATH
"""
pattern = params[0]
directory = params[1]
command.cooker.findFilesMatchingInDir(pattern, directory)
command.finishAsyncCommand()
findFilesMatchingInDir.needcache = False
def findConfigFilePath(self, command, params):
"""
Find the path of the requested configuration file
"""
configfile = params[0]
command.cooker.findConfigFilePath(configfile)
command.finishAsyncCommand()
findConfigFilePath.needcache = False
def showVersions(self, command, params):
"""
Show the currently selected versions
"""
command.cooker.showVersions()
command.finishAsyncCommand()
showVersions.needcache = True
def showEnvironmentTarget(self, command, params):
"""
Print the environment of a target recipe
(needs the cache to work out which recipe to use)
"""
pkg = params[0]
command.cooker.showEnvironment(None, pkg)
command.finishAsyncCommand()
showEnvironmentTarget.needcache = True
def showEnvironment(self, command, params):
"""
Print the standard environment
or if specified the environment for a specified recipe
"""
bfile = params[0]
command.cooker.showEnvironment(bfile)
command.finishAsyncCommand()
showEnvironment.needcache = False
def parseFiles(self, command, params):
"""
Parse the .bb files
"""
command.cooker.updateCache()
command.finishAsyncCommand()
parseFiles.needcache = True
def compareRevisions(self, command, params):
"""
Parse the .bb files
"""
if bb.fetch.fetcher_compare_revisions(command.cooker.data):
command.finishAsyncCommand(code=1)
else:
command.finishAsyncCommand()
compareRevisions.needcache = True
def triggerEvent(self, command, params):
"""
Trigger a certain event
"""
event = params[0]
bb.event.fire(eval(event), command.cooker.data)
command.currentAsyncCommand = None
triggerEvent.needcache = False
def resetCooker(self, command, params):
"""
Reset the cooker to its initial state, thus forcing a reparse for
any async command that has the needcache property set to True
"""
command.cooker.reset()
command.finishAsyncCommand()
resetCooker.needcache = False