82 lines
3.1 KiB
Python
82 lines
3.1 KiB
Python
from scrapy import log
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from scrapy.utils.project import get_project_settings
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import ConfigParser
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class Configurator:
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"""
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A helper class in the fourmi class. This class is used to process the settings as set
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from one of the Fourmi applications.
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"""
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def __init__(self):
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self.scrapy_settings = get_project_settings()
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def set_output(self, filename, fileformat):
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"""
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This function manipulates the Scrapy output file settings that normally would be set in the settings file.
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In the Fourmi project these are command line arguments.
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:param filename: The filename of the file where the output will be put.
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:param fileformat: The format in which the output will be.
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"""
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if filename != 'results.*format*':
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self.scrapy_settings.overrides["FEED_URI"] = filename
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elif fileformat == "jsonlines":
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self.scrapy_settings.overrides["FEED_URI"] = "results.json"
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elif fileformat is not None:
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self.scrapy_settings.overrides["FEED_URI"] = "results." + fileformat
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if fileformat is not None:
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self.scrapy_settings.overrides["FEED_FORMAT"] = fileformat
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def start_log(self, logfile, verbose):
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"""
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This function starts the logging functionality of Scrapy using the settings given by the CLI.
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:param logfile: The location where the logfile will be saved.
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:param verbose: A boolean value to switch between loglevels.
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"""
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if logfile is not None:
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if verbose:
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log.start(logfile=logfile, logstdout=False, loglevel=log.DEBUG)
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else:
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log.start(logfile=logfile, logstdout=True, loglevel=log.WARNING)
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else:
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if verbose:
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log.start(logstdout=False, loglevel=log.DEBUG)
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else:
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log.start(logstdout=True, loglevel=log.WARNING)
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@staticmethod
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def read_sourceconfiguration():
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"""
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This function reads sources.cfg in the main folder for configuration
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variables for sources
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:return a ConfigParser object of sources.cfg
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"""
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config = ConfigParser.ConfigParser()
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config.read('sources.cfg') # [TODO]: should be softcoded eventually
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return config
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@staticmethod
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def get_section(config, sourcename):
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"""
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This function reads a config section labeled in variable sourcename and
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tests whether the reliability variable is set else set to empty string.
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Return the default section if the labeled config section does not exist
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:param config: a ConfigParser object
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:param sourcename: the name of the section to be read
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:return a dictionary of the section in the config labeled in sourcename
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"""
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section = dict()
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if config.has_section(sourcename):
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section = dict(config.items(sourcename))
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elif config.defaults():
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section = config.defaults()
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if 'reliability' not in section:
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log.msg('Reliability not set for %s' % sourcename,
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level=log.WARNING)
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section['reliability'] = ''
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return section
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