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server_side_script.py

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    server_side_script.py 2.50 KiB
    #!/usr/bin/env python3
    # -*- coding: utf-8 -*-
    #
    # ** header v3.0
    # This file is a part of the CaosDB Project.
    #
    # Copyright (C) 2018 Research Group Biomedical Physics,
    # Max-Planck-Institute for Dynamics and Self-Organization Göttingen
    #
    # This program is free software: you can redistribute it and/or modify
    # it under the terms of the GNU Affero General Public License as
    # published by the Free Software Foundation, either version 3 of the
    # License, or (at your option) any later version.
    #
    # This program is distributed in the hope that it will be useful,
    # but WITHOUT ANY WARRANTY; without even the implied warranty of
    # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    # GNU Affero General Public License for more details.
    #
    # You should have received a copy of the GNU Affero General Public License
    # along with this program. If not, see <https://www.gnu.org/licenses/>.
    #
    # ** end header
    #
    """server_side_script.py.
    
    An example which implements a minimal server-side script.
    
    1) This script expects to find a *.txt file in the .upload_files dir which is
    printed to stdout.
    
    2) It executes a "Count stars" query and prints the result to stdout.
    
    3) It will return with code 0 if everything is ok, or with any code that is
    specified with the commandline option --exit
    """
    
    import sys
    from os import listdir
    from caosdb import configure_connection, execute_query
    
    
    # parse --auth-token option and configure connection
    CODE = 0
    QUERY = "COUNT stars"
    for arg in sys.argv:
        if arg.startswith("--auth-token="):
            auth_token = arg[13:]
            configure_connection(auth_token=auth_token)
        if arg.startswith("--exit="):
            CODE = int(arg[7:])
        if arg.startswith("--query="):
            QUERY = arg[8:]
    
    
    ############################################################
    # 1 # find and print *.txt file ############################
    ############################################################
    
    try:
        for fname in listdir(".upload_files"):
            if fname.endswith(".txt"):
                with open(".upload_files/{}".format(fname)) as f:
                    print(f.read())
    except FileNotFoundError:
        pass
    
    
    ############################################################
    # 2 # query "COUNT stars" ##################################
    ############################################################
    
    RESULT = execute_query(QUERY)
    print(RESULT)
    
    ############################################################
    # 3 ########################################################
    ############################################################
    
    sys.exit(CODE)