Main.py

Go to the documentation of this file.

import logging
import os
import sys
from time import time
 
from Gaudi import Configuration
 
log = logging.getLogger(__name__)
 
 
class BootstrapHelper(object):
    class StatusCode(object):
        def __init__(self, value):
            self.value = value
 
        def __bool__(self):
            return self.value
 
        __nonzero__ = __bool__
 
        def isSuccess(self):
            return self.value
 
        def isFailure(self):
            return not self.value
 
        def ignore(self):
            pass
 
    class Property(object):
        def __init__(self, value):
            self.value = value
 
        def __str__(self):
            # TODO why bytes
            return bytes(self.value).decode("utf-8")
 
        toString = __str__
 
    class AppMgr(object):
        def __init__(self, ptr, lib):
            self.ptr = ptr
            self.lib = lib
            self._as_parameter_ = ptr
 
        def configure(self):
            return BootstrapHelper.StatusCode(
                self.lib.py_bootstrap_fsm_configure(self.ptr)
            )
 
        def initialize(self):
            return BootstrapHelper.StatusCode(
                self.lib.py_bootstrap_fsm_initialize(self.ptr)
            )
 
        def start(self):
            return BootstrapHelper.StatusCode(self.lib.py_bootstrap_fsm_start(self.ptr))
 
        def run(self, nevt):
            return BootstrapHelper.StatusCode(
                self.lib.py_bootstrap_app_run(self.ptr, nevt)
            )
 
        def stop(self):
            return BootstrapHelper.StatusCode(self.lib.py_bootstrap_fsm_stop(self.ptr))
 
        def finalize(self):
            return BootstrapHelper.StatusCode(
                self.lib.py_bootstrap_fsm_finalize(self.ptr)
            )
 
        def terminate(self):
            return BootstrapHelper.StatusCode(
                self.lib.py_bootstrap_fsm_terminate(self.ptr)
            )
 
        def getService(self, name):
            return self.lib.py_bootstrap_getService(self.ptr, name.encode("ascii"))
 
        def setProperty(self, name, value):
            return BootstrapHelper.StatusCode(
                self.lib.py_bootstrap_setProperty(
                    self.ptr, name.encode("ascii"), value.encode("ascii")
                )
            )
 
        def getProperty(self, name):
            return BootstrapHelper.Property(
                self.lib.py_bootstrap_getProperty(self.ptr, name.encode("ascii"))
            )
 
        def printAlgsSequences(self):
            return self.lib.py_helper_printAlgsSequences(self.ptr)
 
        def setOption(self, key, value):
            self.lib.py_bootstrap_setOption(
                self.ptr, key.encode("ascii"), value.encode("ascii")
            )
 
    def __init__(self):
        from ctypes import RTLD_GLOBAL, PyDLL, c_bool, c_char_p, c_int, c_void_p, util
 
        # Helper class to avoid void* to int conversion
        # (see http://stackoverflow.com/questions/17840144)
 
        class IInterface_p(c_void_p):
            def __repr__(self):
                return "IInterface_p(0x%x)" % (0 if self.value is None else self.value)
 
        self.log = logging.getLogger("BootstrapHelper")
        libname = util.find_library("GaudiKernel") or "libGaudiKernel.so"
        self.log.debug("loading GaudiKernel (%s)", libname)
 
        # FIXME: note that we need PyDLL instead of CDLL if the calls to
        #        Python functions are not protected with the GIL.
        self.lib = gkl = PyDLL(libname, mode=RTLD_GLOBAL)
 
        functions = [
            ("createApplicationMgr", IInterface_p, []),
            ("getService", IInterface_p, [IInterface_p, c_char_p]),
            ("setProperty", c_bool, [IInterface_p, c_char_p, c_char_p]),
            ("getProperty", c_char_p, [IInterface_p, c_char_p]),
            ("setOption", None, [IInterface_p, c_char_p, c_char_p]),
            ("ROOT_VERSION_CODE", c_int, []),
        ]
 
        for name, restype, argtypes in functions:
            f = getattr(gkl, "py_bootstrap_%s" % name)
            f.restype, f.argtypes = restype, argtypes
            # create a delegate method if not already present
            # (we do not want to use hasattr because it calls "properties")
            if name not in self.__class__.__dict__:
                setattr(self, name, f)
 
        for name in (
            "configure",
            "initialize",
            "start",
            "stop",
            "finalize",
            "terminate",
        ):
            f = getattr(gkl, "py_bootstrap_fsm_%s" % name)
            f.restype, f.argtypes = c_bool, [IInterface_p]
        gkl.py_bootstrap_app_run.restype = c_bool
        gkl.py_bootstrap_app_run.argtypes = [IInterface_p, c_int]
 
        gkl.py_helper_printAlgsSequences.restype = None
        gkl.py_helper_printAlgsSequences.argtypes = [IInterface_p]
 
    def createApplicationMgr(self):
        ptr = self.lib.py_bootstrap_createApplicationMgr()
        return self.AppMgr(ptr, self.lib)
 
    @property
    def ROOT_VERSION_CODE(self):
        return self.lib.py_bootstrap_ROOT_VERSION_CODE()
 
    @property
    def ROOT_VERSION(self):
        root_version_code = self.ROOT_VERSION_CODE
        a = root_version_code >> 16 & 0xFF
        b = root_version_code >> 8 & 0xFF
        c = root_version_code & 0xFF
        return (a, b, c)
 
 
def _getAllOpts_old(explicit_defaults=False):
    """
    Return all options from the old configuration system as a dictionary.
 
    If explicit_defaults is true, include default values of unset properties in the dictionary.
    """
    from itertools import chain
 
    from GaudiKernel.Proxy.Configurable import Configurable, getNeededConfigurables
 
    old_opts = {}
 
    # Keep track of which algorithms we have already processed to avoid
    # computing them many times
    done_conf = set()
    # More algorithms may be generated when we call "getValuedProperties" so we
    # may need a few iterations before we get the full list
    # (see GaudiConfig.ControlFlow)
    while True:
        needed_conf = [n for n in getNeededConfigurables() if n not in done_conf]
        if not needed_conf:
            break
 
        for n in needed_conf:
            done_conf.add(n)
            c = Configurable.allConfigurables[n]
            items = getattr(c, "getValuedProperties", dict)().items()
            if explicit_defaults:
                items = chain(c.getDefaultProperties().items(), items)
            for p, v in items:
                # Note: AthenaCommon.Configurable does not have Configurable.PropertyReference
                if hasattr(Configurable, "PropertyReference") and isinstance(
                    v, Configurable.PropertyReference
                ):
                    # this is done in "getFullName", but the exception is ignored,
                    # so we do it again to get it
                    v = v.__resolve__()
                if hasattr(v, "__opt_value__"):
                    v = v.__opt_value__()
                elif isinstance(v, str):
                    v = repr(v)
                else:
                    v = str(v)
                old_opts[".".join((n, p))] = v
 
    return old_opts
 
 
def getAllOpts(explicit_defaults=False):
    """
    Return all options from the old and new configuration system as a dictionary.
 
    If explicit_defaults is true, include default values of unset properties in the dictionary.
    """
    import GaudiConfig2
 
    # We need to run normal (without defaults) collection first (regardless of explicit_defaults)
    # as the conflicts detection makes sense only for explicitly set options
    old_opts = _getAllOpts_old(False)
    opts = GaudiConfig2.all_options(False)
 
    conflicts = [n for n in set(opts).intersection(old_opts) if opts[n] != old_opts[n]]
    if conflicts:
        conflicts.sort()
        log.error("Some properties are set in old and new style configuration")
        log.warning("name: old -> new")
        for n in conflicts:
            log.warning("%s: %s -> %s", n, old_opts[n], opts[n])
            sys.exit(10)
 
    opts.update(old_opts)
 
    if explicit_defaults:
        # If we are asked to print also the defaults, we collect everything
        # and blindly merge to make sure we have the full set of configurables
        all_opts = _getAllOpts_old(True)
        all_opts.update(GaudiConfig2.all_options(True))
        # the we override the dictionary with the explicitly set options
        # (that leaves the defaults untouched and the set options with the
        # correct value)
        all_opts.update(opts)
        opts = all_opts
 
    return opts
 
 
def toOpt(value):
    """
    Helper to convert values to old .opts format.
 
    >>> print(toOpt('some "text"'))
    "some \\"text\\""
    >>> print(toOpt('first\\nsecond'))
    "first
    second"
    >>> print(toOpt({'a': [1, 2, '3']}))
    {"a": [1, 2, "3"]}
    """
    if isinstance(value, str):
        return '"{0}"'.format(value.replace('"', '\\"'))
    elif isinstance(value, dict):
        return "{{{0}}}".format(
            ", ".join("{0}: {1}".format(toOpt(k), toOpt(v)) for k, v in value.items())
        )
    elif hasattr(value, "__iter__"):
        return "[{0}]".format(", ".join(map(toOpt, value)))
    else:
        return repr(value)
 
 
def parseOpt(s):
    """
    Helper to parse option strings to Python values.
 
    Ideally it should just be "eval", but the string parser of Gaudi
    is different from the Python one, so we get string options that
    cannot be just evaluated.
 
    >>> print(parseOpt('123'))
    123
    >>> print(parseOpt('"some\\n\\\\"text\\\\""'))
    some
    "text"
    >>> print(parseOpt(''))
    <BLANKLINE>
 
    (see gaudi/Gaudi#78)
    """
    import re
 
    quoted_string = re.compile(r'^"(.*)"$', re.DOTALL)
    # FIXME: this is needed because we cannot use repr for strings
    #        (see gaudi/Gaudi#78)
    if not s:  # pass through empty strings
        return s
    m = quoted_string.match(s)
    if m:
        return m.group(1).replace('\\"', '"')
    return eval(s)
 
 
class gaudimain(object):
    def __init__(self):
        from Configurables import ApplicationMgr
 
        appMgr = ApplicationMgr()
        if os.environ.get("GAUDIAPPNAME"):
            appMgr.AppName = str(os.environ["GAUDIAPPNAME"])
        if os.environ.get("GAUDIAPPVERSION"):
            appMgr.AppVersion = str(os.environ["GAUDIAPPVERSION"])
        self.log = logging.getLogger(__name__)
        self.printsequence = False
        self.application = "Gaudi::Application"
 
    def setupParallelLogging(self):
        # ---------------------------------------------------
        # set up Logging
        # ----------------
        # from multiprocessing import enableLogging, getLogger
        import multiprocessing
 
        # preliminaries for handlers/output files, etc.
        from time import ctime
 
        datetime = ctime()
        datetime = datetime.replace(" ", "_")
        outfile = open("gaudirun-%s.log" % (datetime), "w")
        # two handlers, one for a log file, one for terminal
        streamhandler = logging.StreamHandler(stream=outfile)
        console = logging.StreamHandler()
        # create formatter : the params in parentheses are variable names available via logging
        formatter = logging.Formatter(
            "%(asctime)s - %(name)s - %(levelname)s - %(message)s"
        )
        # add formatter to Handler
        streamhandler.setFormatter(formatter)
        console.setFormatter(formatter)
        # now, configure the logger
        # enableLogging( level=0 )
        # self.log = getLogger()
        self.log = multiprocessing.log_to_stderr()
        self.log.setLevel(logging.INFO)
        self.log.name = "Gaudi/Main.py Logger"
        self.log.handlers = []
        # add handlers to logger : one for output to a file, one for console output
        self.log.addHandler(streamhandler)
        self.log.addHandler(console)
        self.log.removeHandler(console)
        # set level!!
        self.log.setLevel = logging.INFO
        # ---------------------------------------------------
 
    def generatePyOutput(self, all=False):
        import re
        from collections import defaultdict
        from pprint import pformat
 
        optDict = defaultdict(dict)
        allOpts = getAllOpts(all)
        for key in allOpts:
            c, p = key.rsplit(".", 1)
            optDict[c][p] = parseOpt(allOpts[key])
        formatted = pformat(dict(optDict))
        # undo splitting of strings on multiple lines
 
        return re.sub(r'"\n +"', "", formatted, flags=re.MULTILINE)
 
    def generateOptsOutput(self, all=False):
        opts = getAllOpts(all)
        keys = sorted(opts)
        return "\n".join(
            "{} = {};".format(key, toOpt(parseOpt(opts[key]))) for key in keys
        )
 
    def _writepickle(self, filename):
        # --- Lets take the first file input file as the name of the pickle file
        import pickle
 
        output = open(filename, "wb")
        # Dump only the the configurables that make sense to dump (not User ones)
        from GaudiKernel.Proxy.Configurable import getNeededConfigurables
 
        to_dump = {}
        for n in getNeededConfigurables():
            to_dump[n] = Configuration.allConfigurables[n]
        pickle.dump(to_dump, output, -1)
        output.close()
 
    def printconfig(self, old_format=False, all=False):
        msg = "Dumping all configurables and properties"
        if not all:
            msg += " (different from default)"
        log.info(msg)
        if old_format:
            print(self.generateOptsOutput(all))
        else:
            print(self.generatePyOutput(all))
        sys.stdout.flush()
 
    def writeconfig(self, filename, all=False):
        import json
 
        write = {
            ".pkl": lambda filename, all: self._writepickle(filename),
            ".py": lambda filename, all: open(filename, "w").write(
                self.generatePyOutput(all) + "\n"
            ),
            ".opts": lambda filename, all: open(filename, "w").write(
                self.generateOptsOutput(all) + "\n"
            ),
            ".json": lambda filename, all: json.dump(
                getAllOpts(all), open(filename, "w"), indent=2, sort_keys=True
            ),
        }
        try:
            import yaml
 
            write[".yaml"] = lambda filename, all: yaml.safe_dump(
                getAllOpts(all), open(filename, "w")
            )
            write[".yml"] = write[".yaml"]
        except ImportError:
            pass  # yaml support is optional
 
        from os.path import splitext
 
        ext = splitext(filename)[1]
        if ext in write:
            write[ext](filename, all)
        else:
            log.error(
                "Unknown file type '%s'. Must be any of %r.", ext, sorted(write.keys())
            )
            sys.exit(1)
 
    # Instantiate and run the application.
    #  Depending on the number of CPUs (ncpus) specified, it start
    def run(self, attach_debugger, ncpus=None):
        if not ncpus:
            # Standard sequential mode
            result = self.runSerial(attach_debugger)
        else:
            # Otherwise, run with the specified number of cpus
            result = self.runParallel(ncpus)
        return result
 
    def hookDebugger(self):
        """Hook gdb to the current session. This is done by forking
        the current process and replacing the parent with gdb, while
        the child continues to run the program.
        """
 
        child_pid = os.fork()
 
        if child_pid == 0:
            # CHILD PROCESS - runs the actual program
            return
        else:
            # PARENT PROCESS - becomes GDB
 
            # Replace parent process with GDB
            args = [arg for arg in sys.argv if arg != "--gdb"]
            os.execvp(
                "gdb",
                [
                    "gdb",
                    "-q",
                    "-p",
                    str(child_pid),
                    "-ex",
                    f"set args {' '.join(args)}",
                ],
            )
 
    def runSerial(self, attach_debugger):
        try:
            from GaudiKernel.Proxy.Configurable import expandvars
        except ImportError:
            # pass-through implementation if expandvars is not defined (AthenaCommon)
            def expandvars(data):
                return data
 
        from GaudiKernel.Proxy.Configurable import Configurable
 
        self.log.debug("runSerial: apply options")
        conf_dict = expandvars(getAllOpts())
        conf_dict["ApplicationMgr.JobOptionsType"] = '"NONE"'
 
        if self.printsequence:
            conf_dict["ApplicationMgr.PrintAlgsSequence"] = "true"
 
        if hasattr(Configurable, "_configurationLocked"):
            Configurable._configurationLocked = True
 
        if attach_debugger:
            self.hookDebugger()
 
        self.log.debug("-" * 80)
        self.log.debug("%s: running in serial mode", __name__)
        self.log.debug("-" * 80)
        sysStart = time()
 
        import Gaudi
 
        app = Gaudi.Application.create(self.application, conf_dict)
        retcode = app.run()
 
        sysTime = time() - sysStart
        self.log.debug("-" * 80)
        self.log.debug(
            "%s: serial system finished, time taken: %5.4fs", __name__, sysTime
        )
        self.log.debug("-" * 80)
 
        return retcode
 
    def runParallel(self, ncpus):
        self.setupParallelLogging()
        import GaudiMP.GMPBase as gpp
        from Gaudi.Configuration import Configurable
 
        c = Configurable.allConfigurables
        self.log.info("-" * 80)
        self.log.info("%s: Parallel Mode : %i ", __name__, ncpus)
        for name, value in [
            ("platform", " ".join(os.uname())),
            ("config", os.environ.get("BINARY_TAG") or os.environ.get("CMTCONFIG")),
            ("app. name", os.environ.get("GAUDIAPPNAME")),
            ("app. version", os.environ.get("GAUDIAPPVERSION")),
        ]:
            self.log.info("%s: %30s : %s ", __name__, name, value or "Undefined")
        try:
            events = str(c["ApplicationMgr"].EvtMax)
        except Exception:
            events = "Undetermined"
        self.log.info("%s: Events Specified : %s ", __name__, events)
        self.log.info("-" * 80)
        # Parall = gpp.Coordinator(ncpus, shared, c, self.log)
        Parall = gpp.Coord(ncpus, c, self.log)
        sysStart = time()
        sc = Parall.Go()
        self.log.info("MAIN.PY : received %s from Coordinator" % (sc))
        if sc.isFailure():
            return 1
        sysTime = time() - sysStart
        self.log.name = "Gaudi/Main.py Logger"
        self.log.info("-" * 80)
        self.log.info(
            "%s: parallel system finished, time taken: %5.4fs", __name__, sysTime
        )
        self.log.info("-" * 80)
        return 0