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295 lines
11 KiB
295 lines
11 KiB
11 years ago
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## Amazon S3 manager
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## Author: Michal Ludvig <michal@logix.cz>
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## http://www.logix.cz/michal
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## 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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import os
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import sys
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import Progress
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from SortedDict import SortedDict
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import httplib
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import json
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class Config(object):
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_instance = None
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_parsed_files = []
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_doc = {}
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access_key = ""
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secret_key = ""
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access_token = ""
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host_base = "s3.amazonaws.com"
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host_bucket = "%(bucket)s.s3.amazonaws.com"
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simpledb_host = "sdb.amazonaws.com"
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cloudfront_host = "cloudfront.amazonaws.com"
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verbosity = logging.WARNING
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progress_meter = True
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progress_class = Progress.ProgressCR
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send_chunk = 4096
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recv_chunk = 4096
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list_md5 = False
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human_readable_sizes = False
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extra_headers = SortedDict(ignore_case = True)
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force = False
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enable = None
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get_continue = False
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skip_existing = False
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recursive = False
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acl_public = None
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acl_grants = []
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acl_revokes = []
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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
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add_encoding_exts = ""
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preserve_attrs = True
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preserve_attrs_list = [
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'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)
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'atime', # Last access timestamp
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'mtime', # Modification timestamp
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'ctime', # Creation timestamp
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'mode', # File mode (e.g. rwxr-xr-x = 755)
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'md5', # File MD5 (if known)
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#'acl', # Full ACL (not yet supported)
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]
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delete_removed = False
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delete_after = False
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delete_after_fetch = False
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_doc['delete_removed'] = "[sync] Remove remote S3 objects when local file has been deleted"
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delay_updates = False
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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"
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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"
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guess_mime_type = True
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mime_type = ""
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enable_multipart = True
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multipart_chunk_size_mb = 15 # MB
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# List of checks to be performed for 'sync'
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sync_checks = ['size', 'md5'] # 'weak-timestamp'
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# List of compiled REGEXPs
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exclude = []
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include = []
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# Dict mapping compiled REGEXPs back to their textual form
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debug_exclude = {}
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debug_include = {}
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encoding = "utf-8"
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urlencoding_mode = "normal"
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log_target_prefix = ""
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reduced_redundancy = False
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follow_symlinks = False
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socket_timeout = 300
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invalidate_on_cf = False
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# joseprio: new flags for default index invalidation
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invalidate_default_index_on_cf = False
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invalidate_default_index_root_on_cf = True
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website_index = "index.html"
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website_error = ""
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website_endpoint = "http://%(bucket)s.s3-website-%(location)s.amazonaws.com/"
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additional_destinations = []
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cache_file = ""
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add_headers = ""
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## Creating a singleton
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def __new__(self, configfile = None):
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if self._instance is None:
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self._instance = object.__new__(self)
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return self._instance
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def __init__(self, configfile = None):
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if configfile:
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try:
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self.read_config_file(configfile)
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except IOError, e:
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if 'AWS_CREDENTIAL_FILE' in os.environ:
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self.env_config()
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if len(self.access_key)==0:
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self.role_config()
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def role_config(self):
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conn = httplib.HTTPConnection(host='169.254.169.254',timeout=0.1)
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try:
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conn.request('GET', "/latest/meta-data/iam/security-credentials/")
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resp = conn.getresponse()
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files = resp.read()
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if resp.status == 200 and len(files)>1:
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conn.request('GET', "/latest/meta-data/iam/security-credentials/%s"%files)
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resp=conn.getresponse()
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if resp.status == 200:
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creds=json.load(resp)
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Config().update_option('access_key', creds['AccessKeyId'].encode('ascii'))
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Config().update_option('secret_key', creds['SecretAccessKey'].encode('ascii'))
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Config().update_option('access_token', creds['Token'].encode('ascii'))
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else:
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raise IOError
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else:
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raise IOError
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except:
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raise
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def role_refresh(self):
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try:
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self.role_config()
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except:
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warning("Could not refresh role")
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def env_config(self):
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cred_content = ""
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try:
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cred_file = open(os.environ['AWS_CREDENTIAL_FILE'],'r')
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cred_content = cred_file.read()
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except IOError, e:
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debug("Error %d accessing credentials file %s" % (e.errno,os.environ['AWS_CREDENTIAL_FILE']))
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r_data = re.compile("^\s*(?P<orig_key>\w+)\s*=\s*(?P<value>.*)")
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r_quotes = re.compile("^\"(.*)\"\s*$")
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if len(cred_content)>0:
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for line in cred_content.splitlines():
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is_data = r_data.match(line)
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is_data = r_data.match(line)
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if is_data:
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data = is_data.groupdict()
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if r_quotes.match(data["value"]):
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data["value"] = data["value"][1:-1]
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if data["orig_key"]=="AWSAccessKeyId":
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data["key"] = "access_key"
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elif data["orig_key"]=="AWSSecretKey":
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data["key"] = "secret_key"
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else:
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del data["key"]
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if "key" in data:
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Config().update_option(data["key"], data["value"])
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if data["key"] in ("access_key", "secret_key", "gpg_passphrase"):
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print_value = (data["value"][:2]+"...%d_chars..."+data["value"][-1:]) % (len(data["value"]) - 3)
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else:
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print_value = data["value"]
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debug("env_Config: %s->%s" % (data["key"], print_value))
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def option_list(self):
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retval = []
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for option in dir(self):
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## Skip attributes that start with underscore or are not string, int or bool
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option_type = type(getattr(Config, option))
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if option.startswith("_") or \
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not (option_type in (
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type("string"), # str
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type(42), # int
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type(True))): # bool
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continue
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retval.append(option)
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return retval
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def read_config_file(self, configfile):
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cp = ConfigParser(configfile)
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for option in self.option_list():
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self.update_option(option, cp.get(option))
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if cp.get('add_headers'):
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for option in cp.get('add_headers').split(","):
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(key, value) = option.split(':')
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self.extra_headers[key.replace('_', '-').strip()] = value.strip()
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self._parsed_files.append(configfile)
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def dump_config(self, stream):
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ConfigDumper(stream).dump("default", self)
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def update_option(self, option, value):
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if value is None:
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return
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#### Handle environment reference
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if str(value).startswith("$"):
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return self.update_option(option, os.getenv(str(value)[1:]))
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#### Special treatment of some options
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## verbosity must be known to "logging" module
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if option == "verbosity":
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try:
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setattr(Config, "verbosity", logging._levelNames[value])
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except KeyError:
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error("Config: verbosity level '%s' is not valid" % value)
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## allow yes/no, true/false, on/off and 1/0 for boolean options
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elif type(getattr(Config, option)) is type(True): # bool
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if str(value).lower() in ("true", "yes", "on", "1"):
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setattr(Config, option, True)
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elif str(value).lower() in ("false", "no", "off", "0"):
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setattr(Config, option, False)
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else:
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error("Config: value of option '%s' must be Yes or No, not '%s'" % (option, value))
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elif type(getattr(Config, option)) is type(42): # int
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try:
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setattr(Config, option, int(value))
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except ValueError, e:
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error("Config: value of option '%s' must be an integer, not '%s'" % (option, value))
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else: # string
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setattr(Config, option, value)
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class ConfigParser(object):
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def __init__(self, file, sections = []):
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self.cfg = {}
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self.parse_file(file, sections)
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def parse_file(self, file, sections = []):
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debug("ConfigParser: Reading file '%s'" % file)
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if type(sections) != type([]):
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sections = [sections]
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in_our_section = True
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f = open(file, "r")
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r_comment = re.compile("^\s*#.*")
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r_empty = re.compile("^\s*$")
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r_section = re.compile("^\[([^\]]+)\]")
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r_data = re.compile("^\s*(?P<key>\w+)\s*=\s*(?P<value>.*)")
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r_quotes = re.compile("^\"(.*)\"\s*$")
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for line in f:
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if r_comment.match(line) or r_empty.match(line):
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continue
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is_section = r_section.match(line)
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if is_section:
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section = is_section.groups()[0]
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in_our_section = (section in sections) or (len(sections) == 0)
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continue
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is_data = r_data.match(line)
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if is_data and in_our_section:
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data = is_data.groupdict()
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if r_quotes.match(data["value"]):
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data["value"] = data["value"][1:-1]
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self.__setitem__(data["key"], data["value"])
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if data["key"] in ("access_key", "secret_key", "gpg_passphrase"):
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print_value = (data["value"][:2]+"...%d_chars..."+data["value"][-1:]) % (len(data["value"]) - 3)
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else:
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print_value = data["value"]
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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):
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return self.cfg[name]
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def __setitem__(self, name, value):
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self.cfg[name] = value
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def get(self, name, default = None):
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if self.cfg.has_key(name):
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return self.cfg[name]
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return default
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class ConfigDumper(object):
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def __init__(self, stream):
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self.stream = stream
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def dump(self, section, config):
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self.stream.write("[%s]\n" % section)
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for option in config.option_list():
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self.stream.write("%s = %s\n" % (option, getattr(config, option)))
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# vim:et:ts=4:sts=4:ai
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