process.py

#!/usr/bin/env python
'''
Created on Jun 20, 2012

@author: Alex Ip (alex.ip@ga.gov.au)
Main script to be invoked from the command line
Replaces ULA nbar.py
'''

import logging, sys, os, traceback
import image_processor
import ULA3.image_processor as process_manager
from ULA3.image_processor import ProcessorConfig
from ULA3 import DataManager
from ULA3.utils import log_multiline

#if __name__ == '__main__':
# Set top logging level settings explicitly
console_handler = logging.StreamHandler(sys.stdout)
console_handler.setLevel(logging.DEBUG)
console_formatter = logging.Formatter('%(name)s : %(message)s')
console_handler.setFormatter(console_formatter)

root_logger = logging.getLogger('root')
if not root_logger.level:
    root_logger.setLevel(logging.INFO)
    root_logger.addHandler(console_handler)


def main():
    CONFIG = ProcessorConfig()
    DATA = DataManager()
    
    root_logger.info('process started with args %s', CONFIG._args)
    try:
        assert CONFIG.input, 'Input path for scene(s) must be specified'
    
        # Subprocess list specified (in order) by:
        #    1. Individual subprocess
        #    2. Custom subprocess list file
        #    3. Specified process level (e.g. 'nbar', 'pqa')
        #    4. Default (nbar) - uses __init__.txt
        subprocess = (process_manager.get_process_list_from_text(CONFIG.subprocess) or
            process_manager.get_process_list_from_file(CONFIG.subprocess_file) or
            process_manager.get_process_list_from_file(
                os.path.join(CONFIG.code_root, 'image_processor', CONFIG.process_level + '.txt')) or
            [])
    
        image_processor.process(subprocess, CONFIG.resume)
        root_logger.info('process completed successfully')
    
        if CONFIG.debug:
            DATA.save_all() # Save all in-memory data for debugging
    
        sys.exit(0)
    
    except (Exception), e:
        root_logger.info('process failed')
        log_multiline(root_logger.error, traceback.format_exc(), 'process failed: ' + e.message, '\t')
        DATA.save_all() # Save all in-memory data for debugging or resuming
        sys.exit(1)

if __name__ == '__main__':
    main()