Squashed 'yocto-poky/' content from commit ea562de
git-subtree-dir: yocto-poky
git-subtree-split: ea562de57590c966cd5a75fda8defecd397e6436
diff --git a/bitbake/lib/prserv/serv.py b/bitbake/lib/prserv/serv.py
new file mode 100644
index 0000000..5c0ffb9
--- /dev/null
+++ b/bitbake/lib/prserv/serv.py
@@ -0,0 +1,418 @@
+import os,sys,logging
+import signal, time
+from SimpleXMLRPCServer import SimpleXMLRPCServer, SimpleXMLRPCRequestHandler
+import threading
+import Queue
+
+try:
+ import sqlite3
+except ImportError:
+ from pysqlite2 import dbapi2 as sqlite3
+
+import bb.server.xmlrpc
+import prserv
+import prserv.db
+import errno
+
+logger = logging.getLogger("BitBake.PRserv")
+
+if sys.hexversion < 0x020600F0:
+ print("Sorry, python 2.6 or later is required.")
+ sys.exit(1)
+
+class Handler(SimpleXMLRPCRequestHandler):
+ def _dispatch(self,method,params):
+ try:
+ value=self.server.funcs[method](*params)
+ except:
+ import traceback
+ traceback.print_exc()
+ raise
+ return value
+
+PIDPREFIX = "/tmp/PRServer_%s_%s.pid"
+singleton = None
+
+
+class PRServer(SimpleXMLRPCServer):
+ def __init__(self, dbfile, logfile, interface, daemon=True):
+ ''' constructor '''
+ import socket
+ try:
+ SimpleXMLRPCServer.__init__(self, interface,
+ logRequests=False, allow_none=True)
+ except socket.error:
+ ip=socket.gethostbyname(interface[0])
+ port=interface[1]
+ msg="PR Server unable to bind to %s:%s\n" % (ip, port)
+ sys.stderr.write(msg)
+ raise PRServiceConfigError
+
+ self.dbfile=dbfile
+ self.daemon=daemon
+ self.logfile=logfile
+ self.working_thread=None
+ self.host, self.port = self.socket.getsockname()
+ self.pidfile=PIDPREFIX % (self.host, self.port)
+
+ self.register_function(self.getPR, "getPR")
+ self.register_function(self.quit, "quit")
+ self.register_function(self.ping, "ping")
+ self.register_function(self.export, "export")
+ self.register_function(self.importone, "importone")
+ self.register_introspection_functions()
+
+ self.db = prserv.db.PRData(self.dbfile)
+ self.table = self.db["PRMAIN"]
+
+ self.requestqueue = Queue.Queue()
+ self.handlerthread = threading.Thread(target = self.process_request_thread)
+ self.handlerthread.daemon = False
+
+ def process_request_thread(self):
+ """Same as in BaseServer but as a thread.
+
+ In addition, exception handling is done here.
+
+ """
+ iter_count = 1
+ # 60 iterations between syncs or sync if dirty every ~30 seconds
+ iterations_between_sync = 60
+
+ while not self.quit:
+ try:
+ (request, client_address) = self.requestqueue.get(True, 30)
+ except Queue.Empty:
+ self.table.sync_if_dirty()
+ continue
+ try:
+ self.finish_request(request, client_address)
+ self.shutdown_request(request)
+ iter_count = (iter_count + 1) % iterations_between_sync
+ if iter_count == 0:
+ self.table.sync_if_dirty()
+ except:
+ self.handle_error(request, client_address)
+ self.shutdown_request(request)
+ self.table.sync()
+ self.table.sync_if_dirty()
+
+ def sigint_handler(self, signum, stack):
+ self.table.sync()
+
+ def sigterm_handler(self, signum, stack):
+ self.table.sync()
+ raise SystemExit
+
+ def process_request(self, request, client_address):
+ self.requestqueue.put((request, client_address))
+
+ def export(self, version=None, pkgarch=None, checksum=None, colinfo=True):
+ try:
+ return self.table.export(version, pkgarch, checksum, colinfo)
+ except sqlite3.Error as exc:
+ logger.error(str(exc))
+ return None
+
+ def importone(self, version, pkgarch, checksum, value):
+ return self.table.importone(version, pkgarch, checksum, value)
+
+ def ping(self):
+ return not self.quit
+
+ def getinfo(self):
+ return (self.host, self.port)
+
+ def getPR(self, version, pkgarch, checksum):
+ try:
+ return self.table.getValue(version, pkgarch, checksum)
+ except prserv.NotFoundError:
+ logger.error("can not find value for (%s, %s)",version, checksum)
+ return None
+ except sqlite3.Error as exc:
+ logger.error(str(exc))
+ return None
+
+ def quit(self):
+ self.quit=True
+ return
+
+ def work_forever(self,):
+ self.quit = False
+ self.timeout = 0.5
+
+ logger.info("Started PRServer with DBfile: %s, IP: %s, PORT: %s, PID: %s" %
+ (self.dbfile, self.host, self.port, str(os.getpid())))
+
+ self.handlerthread.start()
+ while not self.quit:
+ self.handle_request()
+ self.handlerthread.join()
+ self.table.sync()
+ logger.info("PRServer: stopping...")
+ self.server_close()
+ return
+
+ def start(self):
+ if self.daemon:
+ pid = self.daemonize()
+ else:
+ pid = self.fork()
+
+ # Ensure both the parent sees this and the child from the work_forever log entry above
+ logger.info("Started PRServer with DBfile: %s, IP: %s, PORT: %s, PID: %s" %
+ (self.dbfile, self.host, self.port, str(pid)))
+
+ def delpid(self):
+ os.remove(self.pidfile)
+
+ def daemonize(self):
+ """
+ See Advanced Programming in the UNIX, Sec 13.3
+ """
+ try:
+ pid = os.fork()
+ if pid > 0:
+ os.waitpid(pid, 0)
+ #parent return instead of exit to give control
+ return pid
+ except OSError as e:
+ raise Exception("%s [%d]" % (e.strerror, e.errno))
+
+ os.setsid()
+ """
+ fork again to make sure the daemon is not session leader,
+ which prevents it from acquiring controlling terminal
+ """
+ try:
+ pid = os.fork()
+ if pid > 0: #parent
+ os._exit(0)
+ except OSError as e:
+ raise Exception("%s [%d]" % (e.strerror, e.errno))
+
+ self.cleanup_handles()
+ os._exit(0)
+
+ def fork(self):
+ try:
+ pid = os.fork()
+ if pid > 0:
+ return pid
+ except OSError as e:
+ raise Exception("%s [%d]" % (e.strerror, e.errno))
+
+ bb.utils.signal_on_parent_exit("SIGTERM")
+ self.cleanup_handles()
+ os._exit(0)
+
+ def cleanup_handles(self):
+ signal.signal(signal.SIGINT, self.sigint_handler)
+ signal.signal(signal.SIGTERM, self.sigterm_handler)
+ os.umask(0)
+ os.chdir("/")
+
+ sys.stdout.flush()
+ sys.stderr.flush()
+ si = file('/dev/null', 'r')
+ so = file(self.logfile, 'a+')
+ se = so
+ os.dup2(si.fileno(),sys.stdin.fileno())
+ os.dup2(so.fileno(),sys.stdout.fileno())
+ os.dup2(se.fileno(),sys.stderr.fileno())
+
+ # Clear out all log handlers prior to the fork() to avoid calling
+ # event handlers not part of the PRserver
+ for logger_iter in logging.Logger.manager.loggerDict.keys():
+ logging.getLogger(logger_iter).handlers = []
+
+ # Ensure logging makes it to the logfile
+ streamhandler = logging.StreamHandler()
+ streamhandler.setLevel(logging.DEBUG)
+ formatter = bb.msg.BBLogFormatter("%(levelname)s: %(message)s")
+ streamhandler.setFormatter(formatter)
+ logger.addHandler(streamhandler)
+
+ # write pidfile
+ pid = str(os.getpid())
+ pf = file(self.pidfile, 'w')
+ pf.write("%s\n" % pid)
+ pf.close()
+
+ self.work_forever()
+ self.delpid()
+
+class PRServSingleton(object):
+ def __init__(self, dbfile, logfile, interface):
+ self.dbfile = dbfile
+ self.logfile = logfile
+ self.interface = interface
+ self.host = None
+ self.port = None
+
+ def start(self):
+ self.prserv = PRServer(self.dbfile, self.logfile, self.interface, daemon=False)
+ self.prserv.start()
+ self.host, self.port = self.prserv.getinfo()
+
+ def getinfo(self):
+ return (self.host, self.port)
+
+class PRServerConnection(object):
+ def __init__(self, host, port):
+ if is_local_special(host, port):
+ host, port = singleton.getinfo()
+ self.host = host
+ self.port = port
+ self.connection, self.transport = bb.server.xmlrpc._create_server(self.host, self.port)
+
+ def terminate(self):
+ try:
+ logger.info("Terminating PRServer...")
+ self.connection.quit()
+ except Exception as exc:
+ sys.stderr.write("%s\n" % str(exc))
+
+ def getPR(self, version, pkgarch, checksum):
+ return self.connection.getPR(version, pkgarch, checksum)
+
+ def ping(self):
+ return self.connection.ping()
+
+ def export(self,version=None, pkgarch=None, checksum=None, colinfo=True):
+ return self.connection.export(version, pkgarch, checksum, colinfo)
+
+ def importone(self, version, pkgarch, checksum, value):
+ return self.connection.importone(version, pkgarch, checksum, value)
+
+ def getinfo(self):
+ return self.host, self.port
+
+def start_daemon(dbfile, host, port, logfile):
+ pidfile = PIDPREFIX % (host, port)
+ try:
+ pf = file(pidfile,'r')
+ pid = int(pf.readline().strip())
+ pf.close()
+ except IOError:
+ pid = None
+
+ if pid:
+ sys.stderr.write("pidfile %s already exist. Daemon already running?\n"
+ % pidfile)
+ return 1
+
+ server = PRServer(os.path.abspath(dbfile), os.path.abspath(logfile), (host,port))
+ server.start()
+ return 0
+
+def stop_daemon(host, port):
+ pidfile = PIDPREFIX % (host, port)
+ try:
+ pf = file(pidfile,'r')
+ pid = int(pf.readline().strip())
+ pf.close()
+ except IOError:
+ pid = None
+
+ if not pid:
+ sys.stderr.write("pidfile %s does not exist. Daemon not running?\n"
+ % pidfile)
+
+ try:
+ PRServerConnection(host, port).terminate()
+ except:
+ logger.critical("Stop PRService %s:%d failed" % (host,port))
+
+ try:
+ if pid:
+ wait_timeout = 0
+ print("Waiting for pr-server to exit.")
+ while is_running(pid) and wait_timeout < 50:
+ time.sleep(0.1)
+ wait_timeout += 1
+
+ if is_running(pid):
+ print("Sending SIGTERM to pr-server.")
+ os.kill(pid,signal.SIGTERM)
+ time.sleep(0.1)
+
+ if os.path.exists(pidfile):
+ os.remove(pidfile)
+
+ except OSError as e:
+ err = str(e)
+ if err.find("No such process") <= 0:
+ raise e
+
+ return 0
+
+def is_running(pid):
+ try:
+ os.kill(pid, 0)
+ except OSError as err:
+ if err.errno == errno.ESRCH:
+ return False
+ return True
+
+def is_local_special(host, port):
+ if host.strip().upper() == 'localhost'.upper() and (not port):
+ return True
+ else:
+ return False
+
+class PRServiceConfigError(Exception):
+ pass
+
+def auto_start(d):
+ global singleton
+
+ host_params = filter(None, (d.getVar('PRSERV_HOST', True) or '').split(':'))
+ if not host_params:
+ return None
+
+ if len(host_params) != 2:
+ logger.critical('\n'.join(['PRSERV_HOST: incorrect format',
+ 'Usage: PRSERV_HOST = "<hostname>:<port>"']))
+ raise PRServiceConfigError
+
+ if is_local_special(host_params[0], int(host_params[1])) and not singleton:
+ import bb.utils
+ cachedir = (d.getVar("PERSISTENT_DIR", True) or d.getVar("CACHE", True))
+ if not cachedir:
+ logger.critical("Please set the 'PERSISTENT_DIR' or 'CACHE' variable")
+ raise PRServiceConfigError
+ bb.utils.mkdirhier(cachedir)
+ dbfile = os.path.join(cachedir, "prserv.sqlite3")
+ logfile = os.path.join(cachedir, "prserv.log")
+ singleton = PRServSingleton(os.path.abspath(dbfile), os.path.abspath(logfile), ("localhost",0))
+ singleton.start()
+ if singleton:
+ host, port = singleton.getinfo()
+ else:
+ host = host_params[0]
+ port = int(host_params[1])
+
+ try:
+ connection = PRServerConnection(host,port)
+ connection.ping()
+ realhost, realport = connection.getinfo()
+ return str(realhost) + ":" + str(realport)
+
+ except Exception:
+ logger.critical("PRservice %s:%d not available" % (host, port))
+ raise PRServiceConfigError
+
+def auto_shutdown(d=None):
+ global singleton
+ if singleton:
+ host, port = singleton.getinfo()
+ try:
+ PRServerConnection(host, port).terminate()
+ except:
+ logger.critical("Stop PRService %s:%d failed" % (host,port))
+ singleton = None
+
+def ping(host, port):
+ conn=PRServerConnection(host, port)
+ return conn.ping()