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## Amazon S3 manager
## Author: Michal Ludvig <michal@logix.cz>
## http://www.logix.cz/michal
## License: GPL Version 2
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import logging |
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from logging import debug, info, warning, error |
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import re
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class Config(object):
_instance = None
_parsed_files = [] |
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_doc = {} |
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access_key = ""
secret_key = "" |
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host_base = "s3.amazonaws.com"
host_bucket = "%(bucket)s.s3.amazonaws.com" |
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simpledb_host = "sdb.amazonaws.com" |
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verbosity = logging.WARNING
send_chunk = 4096
recv_chunk = 4096
human_readable_sizes = False
force = False
acl_public = False |
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proxy_host = "" |
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proxy_port = 3128 |
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encrypt = False |
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dry_run = False
preserve_attrs = True
preserve_attrs_list = [
'uname', # Verbose owner Name (e.g. 'root') |
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'uid', # Numeric user ID (e.g. 0) |
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'gname', # Group name (e.g. 'users') |
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'gid', # Numeric group ID (e.g. 100)
'atime', # Last access timestamp |
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'mtime', # Modification timestamp
'ctime', # Creation timestamp
'mode', # File mode (e.g. rwxr-xr-x = 755)
#'acl', # Full ACL (not yet supported)
] |
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delete_removed = False
_doc['delete_removed'] = "[sync] Remove remote S3 objects when local file has been deleted" |
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gpg_passphrase = "" |
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gpg_command = "" |
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gpg_encrypt = "%(gpg_command)s -c --verbose --no-use-agent --batch --yes --passphrase-fd %(passphrase_fd)s -o %(output_file)s %(input_file)s"
gpg_decrypt = "%(gpg_command)s -d --verbose --no-use-agent --batch --yes --passphrase-fd %(passphrase_fd)s -o %(output_file)s %(input_file)s" |
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use_https = False |
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bucket_location = "US" |
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default_mime_type = "binary/octet-stream"
guess_mime_type = False |
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## Creating a singleton
def __new__(self, configfile = None):
if self._instance is None:
self._instance = object.__new__(self)
return self._instance
def __init__(self, configfile = None):
if configfile:
self.read_config_file(configfile)
def option_list(self):
retval = []
for option in dir(self):
## Skip attributes that start with underscore or are not string, int or bool
option_type = type(getattr(Config, option))
if option.startswith("_") or \
not (option_type in (
type("string"), # str
type(42), # int
type(True))): # bool
continue
retval.append(option)
return retval
def read_config_file(self, configfile):
cp = ConfigParser(configfile)
for option in self.option_list():
self.update_option(option, cp.get(option))
self._parsed_files.append(configfile)
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def dump_config(self, stream):
ConfigDumper(stream).dump("default", self)
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def update_option(self, option, value):
if value is None:
return
#### Special treatment of some options
## verbosity must be known to "logging" module
if option == "verbosity":
try:
setattr(Config, "verbosity", logging._levelNames[value])
except KeyError:
error("Config: verbosity level '%s' is not valid" % value)
## allow yes/no, true/false, on/off and 1/0 for boolean options
elif type(getattr(Config, option)) is type(True): # bool
if str(value).lower() in ("true", "yes", "on", "1"):
setattr(Config, option, True)
elif str(value).lower() in ("false", "no", "off", "0"):
setattr(Config, option, False)
else:
error("Config: value of option '%s' must be Yes or No, not '%s'" % (option, value))
elif type(getattr(Config, option)) is type(42): # int
try:
setattr(Config, option, int(value))
except ValueError, e:
error("Config: value of option '%s' must be an integer, not '%s'" % (option, value))
else: # string
setattr(Config, option, value)
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class ConfigParser(object): |
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def __init__(self, file, sections = []):
self.cfg = {}
self.parse_file(file, sections)
def parse_file(self, file, sections = []): |
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info("ConfigParser: Reading file '%s'" % file) |
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if type(sections) != type([]):
sections = [sections]
in_our_section = True
f = open(file, "r")
r_comment = re.compile("^\s*#.*")
r_empty = re.compile("^\s*$")
r_section = re.compile("^\[([^\]]+)\]")
r_data = re.compile("^\s*(?P<key>\w+)\s*=\s*(?P<value>.*)")
r_quotes = re.compile("^\"(.*)\"\s*$")
for line in f:
if r_comment.match(line) or r_empty.match(line):
continue
is_section = r_section.match(line)
if is_section:
section = is_section.groups()[0]
in_our_section = (section in sections) or (len(sections) == 0)
continue
is_data = r_data.match(line)
if is_data and in_our_section:
data = is_data.groupdict()
if r_quotes.match(data["value"]):
data["value"] = data["value"][1:-1]
self.__setitem__(data["key"], data["value"]) |
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if data["key"] in ("access_key", "secret_key", "gpg_passphrase"):
print_value = (data["value"][:2]+"...%d_chars..."+data["value"][-1:]) % (len(data["value"]) - 3) |
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else:
print_value = data["value"]
debug("ConfigParser: %s->%s" % (data["key"], print_value)) |
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continue |
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warning("Ignoring invalid line in '%s': %s" % (file, line)) |
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def __getitem__(self, name):
return self.cfg[name]
def __setitem__(self, name, value):
self.cfg[name] = value
def get(self, name, default = None):
if self.cfg.has_key(name):
return self.cfg[name]
return default |
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class ConfigDumper(object):
def __init__(self, stream):
self.stream = stream
def dump(self, section, config):
self.stream.write("[%s]\n" % section)
for option in config.option_list():
self.stream.write("%s = %s\n" % (option, getattr(config, option)))
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