CPBaseRunner.py

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# Copyright (C) 2002-2025 CERN for the benefit of the ATLAS collaboration
 
import argparse
from AnaAlgorithm.Logging import logging
from abc import ABC, abstractmethod
import os
 
class CPBaseRunner(ABC):
    def __init__(self):
        self.logger = logging.getLogger("CPBaseRunner")
        self._args = None
        self._inputList = None
        self.parser = self._defaultParseArguments()
        # parse the arguments here is a bad idea
 
    @property
    def args(self):
        if self._args is None:
            self._args = self.parser.parse_args()
        return self._args
 
    @property
    def inputList(self):
        if self._inputList is None:
            if self.args.input_list.endswith('.txt'):
                self._inputList = CPBaseRunner._parseInputFileList(self.args.input_list)
            elif ".root" in self.args.input_list:
                self._inputList = [self.args.input_list]
            else:
                raise FileNotFoundError(f'Input file list \"{self.args.input_list}\" is not supported!'
                                        'Please provide a text file with a list of input files or a single root file.')
            self.logger.info("Initialized input files: %s", self._inputList)
        return self._inputList
    
    @property
    def outputName(self):
        if self.args.output_name.endswith('.root'):
            return self.args.output_name[:-5]
        else:
            return self.args.output_name
 
    def printFlags(self):
        self.logger.info("="*73)
        self.logger.info("="*20 + "FLAG CONFIGURATION" + "="*20)
        self.logger.info("="*73)
        self.logger.info("    Input files:     %s", self.flags.Input.isMC)
        self.logger.info("    RunNumber:       %s", self.flags.Input.RunNumbers)
        self.logger.info("    MCCampaign:      %s", self.flags.Input.MCCampaign)
        self.logger.info("    GeneratorInfo:   %s", self.flags.Input.GeneratorsInfo)
        self.logger.info("    MaxEvents:       %s", self.flags.Exec.MaxEvents)
        self.logger.info("    SkipEvents:      %s", self.flags.Exec.SkipEvents)
        self.logger.info("="*73)
 
    @abstractmethod
    def addCustomArguments(self):
        pass
 
    @abstractmethod
    def makeAlgSequence(self):
        pass
 
    @abstractmethod
    def run(self):
        pass
 
    # The responsiblity of flag.lock will pass to the caller
    def _defaultFlagsInitialization(self):
        from AthenaConfiguration.AllConfigFlags import initConfigFlags
        flags = initConfigFlags()
        flags.Input.Files = self.inputList
        flags.Exec.MaxEvents = self.args.max_events
        flags.Exec.SkipEvents = self.args.skip_n_events
        return flags
 
    def _defaultParseArguments(self):
        parser = argparse.ArgumentParser(
            description='Runscript for CP Algorithm unit tests')
        baseGroup = parser.add_argument_group('Base Script Options')
        baseGroup.add_argument('-i', '--input-list', dest='input_list',
                            help='path to text file containing list of input files, or a single root file')
        baseGroup.add_argument('-o','--output-name', dest='output_name', default='output',
                            help='output name of the analysis root file')
        baseGroup.add_argument('-e', '--max-events', dest='max_events', type=int, default=-1,
                            help='Number of events to run')
        baseGroup.add_argument('-t', '--text-config', dest='text_config',
                            help='path to the YAML configuration file. Tips: use atlas_install_data(path/to/*.yaml) in CMakeLists.txt can help locating the config just by the config file name.')
        baseGroup.add_argument('--no-systematics', dest='no_systematics',
                            action='store_true', help='Disable systematics')
        baseGroup.add_argument('--skip-n-events', dest='skip_n_events', type=int, default=0,
                            help='Skip the first N events in the run, not first N events for each file. This is meant for debugging only. \nIn Eventloop, this option disable the cutbookkeeper algorithms due to technical reasons, and can only be ran in direct-driver.')
        return parser
 
    def _readYamlConfig(self):
        yamlconfig = self._findYamlConfig(local=True)
        if yamlconfig is None:
            raise FileNotFoundError(f'Failed to locate \"{self.args.text_config}\" config file!'
                                    'Check if you have a typo in -t/--text-config argument or missing file in the analysis configuration sub-directory.')
        self.logger.info(f"Found YAML config at: {yamlconfig}")
        self.logger.info("Setting up configuration based on YAML config:")
        from AnalysisAlgorithmsConfig.ConfigText import TextConfig
        config = TextConfig(yamlconfig)
        return config
    
    
    def _findYamlConfig(self, local=True):
        # Find local and abs path first
        if local and ((yamlConfig := CPBaseRunner.findLocalPathYamlConfig(self.args.text_config)) is not None):
            return yamlConfig
        # Then search in the analysis repository and warn for duplicates
        elif (yamlConfig := CPBaseRunner.findRepoPathYamlConfig(self.args.text_config)):
            if len(yamlConfig) > 1:
                raise FileExistsError(f'Multiple files named \"{self.args.text_config}\" found in the analysis repository. Please provide a more specific path to the config file.\nMatches found:\n' + '\n'.join(yamlConfig))
            else:
                return yamlConfig[0]
        # Finally try the slowest method using AthenaCommon
        else:
            from AthenaCommon.Utils.unixtools import find_datafile
            return find_datafile(self.args.text_config)
        
    @staticmethod
    def findLocalPathYamlConfig(textConfigPath):
        configPath = os.path.normpath(os.path.expanduser(textConfigPath))
        if os.path.isabs(configPath) and os.path.isfile(configPath):
            return configPath
        cwdPath = os.path.join(os.getcwd(), configPath)
        if os.path.isfile(cwdPath):
            return cwdPath
        return None
    
    @staticmethod
    def findRepoPathYamlConfig(textConfigPath):
        """
        Search for the file up to two levels deep within the first DATAPATH entry.
        First, check directly under the analysis repository (depth 0).
        Then, check immediate subdirectories (depth 1), looking for the file inside each.
        Returns a list of all matches found.
        """
        matches = []
        analysisRepoPath = os.environ.get('DATAPATH', '').split(os.pathsep)[0]
        # Depth 0: Directly under analysisRepoPath
        searchPath = os.path.join(analysisRepoPath, textConfigPath)
        if os.path.isfile(searchPath):
            matches.append(searchPath)
        # Depth 1: Inside immediate subdirectories
        try:
            for subdir in os.listdir(analysisRepoPath):
                candidate = os.path.join(analysisRepoPath, subdir, textConfigPath)
                if os.path.isfile(candidate):
                    matches.append(candidate)
        except Exception:
            pass
        return matches
 
    def _parseInputFileList(path):
        files = []
        with open(path, 'r') as inputText:
            for line in inputText.readlines():
                # Strip the line and skip comments and empty lines
                line = line.strip()
                if line.startswith('#') or not line:
                    continue
                if os.path.isdir(line):
                    if not os.listdir(line):
                        raise FileNotFoundError(f"The directory \"{path}\" is empty. Please provide a directory with .root files.")
                    for root_file in os.listdir(line):
                        if '.root' in root_file:
                            files.append(os.path.join(line, root_file))
                else:
                    files += line.split(',')
            # Remove leading/trailing whitespaces from file names
            files = [file.strip() for file in files]
        return files
 
    def setup(self):
        self.parser.parse_args()
        self.config = self._readYamlConfig()
        self.flags = self._defaultFlagsInitialization()
 
    def printAvailableArguments(self):
        self.parser.description = 'CPRunScript available arguments'
        self.parser.usage = argparse.SUPPRESS
        self.parser.print_help()