# Copyright (c) 2006-2009 Mitch Garnaat http://garnaat.org/
#
# Permission is hereby granted, free of charge, to any person obtaining a
# copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish, dis-
# tribute, sublicense, and/or sell copies of the Software, and to permit
# persons to whom the Software is furnished to do so, subject to the fol-
# lowing conditions:
#
# The above copyright notice and this permission notice shall be included
# in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABIL-
# ITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
# SHALL THE AUTHOR BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
# WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
# IN THE SOFTWARE.
#
from boto.pyami.config import Config, BotoConfigLocations
import os, sys
import logging
import logging.config

Version = '1.9b'
UserAgent = 'Boto/%s (%s)' % (Version, sys.platform)
config = Config()

def init_logging():
    for file in BotoConfigLocations:
        try:
            logging.config.fileConfig(os.path.expanduser(file))
        except:
            pass

class NullHandler(logging.Handler):
    def emit(self, record):
        pass

log = logging.getLogger('boto')
log.addHandler(NullHandler())
init_logging()

# convenience function to set logging to a particular file
def set_file_logger(name, filepath, level=logging.INFO, format_string=None):
    global log
    if not format_string:
        format_string = "%(asctime)s %(name)s [%(levelname)s]:%(message)s"
    logger = logging.getLogger(name)
    logger.setLevel(level)
    fh = logging.FileHandler(filepath)
    fh.setLevel(level)
    formatter = logging.Formatter(format_string)
    fh.setFormatter(formatter)
    logger.addHandler(fh)
    log = logger

def set_stream_logger(name, level=logging.DEBUG, format_string=None):
    global log
    if not format_string:
        format_string = "%(asctime)s %(name)s [%(levelname)s]:%(message)s"
    logger = logging.getLogger(name)
    logger.setLevel(level)
    fh = logging.StreamHandler()
    fh.setLevel(level)
    formatter = logging.Formatter(format_string)
    fh.setFormatter(formatter)
    logger.addHandler(fh)
    log = logger

def connect_sqs(aws_access_key_id=None, aws_secret_access_key=None, **kwargs):
    """
    :type aws_access_key_id: string
    :param aws_access_key_id: Your AWS Access Key ID

    :type aws_secret_access_key: string
    :param aws_secret_access_key: Your AWS Secret Access Key

    :rtype: :class:`boto.sqs.connection.SQSConnection`
    :return: A connection to Amazon's SQS
    """
    from boto.sqs.connection import SQSConnection
    return SQSConnection(aws_access_key_id, aws_secret_access_key, **kwargs)

def connect_s3(aws_access_key_id=None, aws_secret_access_key=None, **kwargs):
    """
    :type aws_access_key_id: string
    :param aws_access_key_id: Your AWS Access Key ID

    :type aws_secret_access_key: string
    :param aws_secret_access_key: Your AWS Secret Access Key

    :rtype: :class:`boto.s3.connection.S3Connection`
    :return: A connection to Amazon's S3
    """
    from boto.s3.connection import S3Connection
    return S3Connection(aws_access_key_id, aws_secret_access_key, **kwargs)

def connect_ec2(aws_access_key_id=None, aws_secret_access_key=None, **kwargs):
    """
    :type aws_access_key_id: string
    :param aws_access_key_id: Your AWS Access Key ID

    :type aws_secret_access_key: string
    :param aws_secret_access_key: Your AWS Secret Access Key

    :rtype: :class:`boto.ec2.connection.EC2Connection`
    :return: A connection to Amazon's EC2
    """
    from boto.ec2.connection import EC2Connection
    return EC2Connection(aws_access_key_id, aws_secret_access_key, **kwargs)

def connect_elb(aws_access_key_id=None, aws_secret_access_key=None, **kwargs):
    """
    :type aws_access_key_id: string
    :param aws_access_key_id: Your AWS Access Key ID

    :type aws_secret_access_key: string
    :param aws_secret_access_key: Your AWS Secret Access Key

    :rtype: :class:`boto.ec2.elb.ELBConnection`
    :return: A connection to Amazon's Load Balancing Service
    """
    from boto.ec2.elb import ELBConnection
    return ELBConnection(aws_access_key_id, aws_secret_access_key, **kwargs)

def connect_autoscale(aws_access_key_id=None, aws_secret_access_key=None, **kwargs):
    """
    :type aws_access_key_id: string
    :param aws_access_key_id: Your AWS Access Key ID

    :type aws_secret_access_key: string
    :param aws_secret_access_key: Your AWS Secret Access Key

    :rtype: :class:`boto.ec2.autoscale.AutoScaleConnection`
    :return: A connection to Amazon's Auto Scaling Service
    """
    from boto.ec2.autoscale import AutoScaleConnection
    return AutoScaleConnection(aws_access_key_id, aws_secret_access_key, **kwargs)

def connect_cloudwatch(aws_access_key_id=None, aws_secret_access_key=None, **kwargs):
    """
    :type aws_access_key_id: string
    :param aws_access_key_id: Your AWS Access Key ID

    :type aws_secret_access_key: string
    :param aws_secret_access_key: Your AWS Secret Access Key

    :rtype: :class:`boto.ec2.cloudwatch.CloudWatchConnection`
    :return: A connection to Amazon's EC2 Monitoring service
    """
    from boto.ec2.cloudwatch import CloudWatchConnection
    return CloudWatchConnection(aws_access_key_id, aws_secret_access_key, **kwargs)

def connect_sdb(aws_access_key_id=None, aws_secret_access_key=None, **kwargs):
    """
    :type aws_access_key_id: string
    :param aws_access_key_id: Your AWS Access Key ID

    :type aws_secret_access_key: string
    :param aws_secret_access_key: Your AWS Secret Access Key

    :rtype: :class:`boto.sdb.connection.SDBConnection`
    :return: A connection to Amazon's SDB
    """
    from boto.sdb.connection import SDBConnection
    return SDBConnection(aws_access_key_id, aws_secret_access_key, **kwargs)

def connect_fps(aws_access_key_id=None, aws_secret_access_key=None, **kwargs):
    """
    :type aws_access_key_id: string
    :param aws_access_key_id: Your AWS Access Key ID

    :type aws_secret_access_key: string
    :param aws_secret_access_key: Your AWS Secret Access Key

    :rtype: :class:`boto.fps.connection.FPSConnection`
    :return: A connection to FPS
    """
    from boto.fps.connection import FPSConnection
    return FPSConnection(aws_access_key_id, aws_secret_access_key, **kwargs)

def connect_cloudfront(aws_access_key_id=None, aws_secret_access_key=None, **kwargs):
    """
    :type aws_access_key_id: string
    :param aws_access_key_id: Your AWS Access Key ID

    :type aws_secret_access_key: string
    :param aws_secret_access_key: Your AWS Secret Access Key

    :rtype: :class:`boto.fps.connection.FPSConnection`
    :return: A connection to FPS
    """
    from boto.cloudfront import CloudFrontConnection
    return CloudFrontConnection(aws_access_key_id, aws_secret_access_key, **kwargs)

def connect_vpc(aws_access_key_id=None, aws_secret_access_key=None, **kwargs):
    """
    :type aws_access_key_id: string
    :param aws_access_key_id: Your AWS Access Key ID

    :type aws_secret_access_key: string
    :param aws_secret_access_key: Your AWS Secret Access Key

    :rtype: :class:`boto.vpc.VPCConnection`
    :return: A connection to VPC
    """
    from boto.vpc import VPCConnection
    return VPCConnection(aws_access_key_id, aws_secret_access_key, **kwargs)

def connect_rds(aws_access_key_id=None, aws_secret_access_key=None, **kwargs):
    """
    :type aws_access_key_id: string
    :param aws_access_key_id: Your AWS Access Key ID

    :type aws_secret_access_key: string
    :param aws_secret_access_key: Your AWS Secret Access Key

    :rtype: :class:`boto.rds.RDSConnection`
    :return: A connection to RDS
    """
    from boto.rds import RDSConnection
    return RDSConnection(aws_access_key_id, aws_secret_access_key, **kwargs)

def check_extensions(module_name, module_path):
    """
    This function checks for extensions to boto modules.  It should be called in the
    __init__.py file of all boto modules.  See:
    http://code.google.com/p/boto/wiki/ExtendModules

    for details.
    """
    option_name = '%s_extend' % module_name
    version = config.get('Boto', option_name, None)
    if version:
        dirname = module_path[0]
        path = os.path.join(dirname, version)
        if os.path.isdir(path):
            log.info('extending module %s with: %s' % (module_name, path))
            module_path.insert(0, path)

_aws_cache = {}

def _get_aws_conn(service):
    global _aws_cache
    conn = _aws_cache.get(service)
    if not conn:
        meth = getattr(sys.modules[__name__], 'connect_'+service)
        conn = meth()
        _aws_cache[service] = conn
    return conn

def lookup(service, name):
    global _aws_cache
    conn = _get_aws_conn(service)
    obj = _aws_cache.get('.'.join((service,name)), None)
    if not obj:
        obj = conn.lookup(name)
        _aws_cache['.'.join((service,name))] = obj
    return obj