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#!/usr/bin/env python
# Copyright (c) 2006,2007,2008 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.
#
import getopt, sys, os
import boto
from boto.exception import S3ResponseError

usage_string = """
SYNOPSIS
s3put [-a/--access_key <access_key>] [-s/--secret_key <secret_key>]
-b/--bucket <bucket_name> [-c/--callback <num_cb>]
[-d/--debug <debug_level>] [-i/--ignore <ignore_dirs>]
[-n/--no_op] [-p/--prefix <prefix>] [-q/--quiet]
[-g/--grant grant] [-w/--no_overwrite] path

Where
access_key - Your AWS Access Key ID. If not supplied, boto will
use the value of the environment variable
AWS_ACCESS_KEY_ID
secret_key - Your AWS Secret Access Key. If not supplied, boto
will use the value of the environment variable
AWS_SECRET_ACCESS_KEY
bucket_name - The name of the S3 bucket the file(s) should be
copied to.
path - A path to a directory or file that represents the items
to be uploaded. If the path points to an individual file,
that file will be uploaded to the specified bucket. If the
path points to a directory, s3_it will recursively traverse
the directory and upload all files to the specified bucket.
debug_level - 0 means no debug output (default), 1 means normal
debug output from boto, and 2 means boto debug output
plus request/response output from httplib
ignore_dirs - a comma-separated list of directory names that will
be ignored and not uploaded to S3.
num_cb - The number of progress callbacks to display. The default
is zero which means no callbacks. If you supplied a value
of "-c 10" for example, the progress callback would be
called 10 times for each file transferred.
prefix - A file path prefix that will be stripped from the full
path of the file when determining the key name in S3.
For example, if the full path of a file is:
/home/foo/bar/fie.baz
and the prefix is specified as "-p /home/foo/" the
resulting key name in S3 will be:
/bar/fie.baz
The prefix must end in a trailing separator and if it
does not then one will be added.
grant - A canned ACL policy that will be granted on each file
transferred to S3. The value of provided must be one
of the "canned" ACL policies supported by S3:
private|public-read|public-read-write|authenticated-read
no_overwrite - No files will be overwritten on S3, if the file/key
exists on s3 it will be kept. This is useful for
resuming interrupted transfers. Note this is not a
sync, even if the file has been updated locally if
the key exists on s3 the file on s3 will not be
updated.

If the -n option is provided, no files will be transferred to S3 but
informational messages will be printed about what would happen.
"""
def usage():
    print usage_string
    sys.exit()
  
def submit_cb(bytes_so_far, total_bytes):
    print '%d bytes transferred / %d bytes total' % (bytes_so_far, total_bytes)

def get_key_name(fullpath, prefix):
    key_name = fullpath[len(prefix):]
    l = key_name.split(os.sep)
    return '/'.join(l)

def main():
    try:
        opts, args = getopt.getopt(sys.argv[1:], 'a:b:c::d:g:hi:np:qs:vw',
                                   ['access_key', 'bucket', 'callback', 'debug', 'help', 'grant',
                                    'ignore', 'no_op', 'prefix', 'quiet', 'secret_key', 'no_overwrite'])
    except:
        usage()
    ignore_dirs = []
    aws_access_key_id = None
    aws_secret_access_key = None
    bucket_name = ''
    total = 0
    debug = 0
    cb = None
    num_cb = 0
    quiet = False
    no_op = False
    prefix = '/'
    grant = None
    no_overwrite = False
    for o, a in opts:
        if o in ('-h', '--help'):
            usage()
            sys.exit()
        if o in ('-a', '--access_key'):
            aws_access_key_id = a
        if o in ('-b', '--bucket'):
            bucket_name = a
        if o in ('-c', '--callback'):
            num_cb = int(a)
            cb = submit_cb
        if o in ('-d', '--debug'):
            debug = int(a)
        if o in ('-g', '--grant'):
            grant = a
        if o in ('-i', '--ignore'):
            ignore_dirs = a.split(',')
        if o in ('-n', '--no_op'):
            no_op = True
        if o in ('w', '--no_overwrite'):
            no_overwrite = True
        if o in ('-p', '--prefix'):
            prefix = a
            if prefix[-1] != os.sep:
                prefix = prefix + os.sep
        if o in ('-q', '--quiet'):
            quiet = True
        if o in ('-s', '--secret_key'):
            aws_secret_access_key = a
    if len(args) != 1:
        print usage()
    path = os.path.expanduser(args[0])
    path = os.path.expandvars(path)
    path = os.path.abspath(path)
    if bucket_name:
        c = boto.connect_s3(aws_access_key_id=aws_access_key_id,
                            aws_secret_access_key=aws_secret_access_key)
        c.debug = debug
        b = c.get_bucket(bucket_name)
        if os.path.isdir(path):
            if no_overwrite:
                if not quiet:
                    print 'Getting list of existing keys to check against'
                keys = []
                for key in b.list():
                    keys.append(key.name)
            for root, dirs, files in os.walk(path):
                for ignore in ignore_dirs:
                    if ignore in dirs:
                        dirs.remove(ignore)
                for file in files:
                    fullpath = os.path.join(root, file)
                    key_name = get_key_name(fullpath, prefix)
                    copy_file = True
                    if no_overwrite:
                        if key_name in keys:
                            copy_file = False
                            if not quiet:
                                print 'Skipping %s as it exists in s3' % file
                    if copy_file:
                        if not quiet:
                            print 'Copying %s to %s/%s' % (file, bucket_name, key_name)
                        if not no_op:
                            k = b.new_key(key_name)
                            k.set_contents_from_filename(fullpath, cb=cb,
                                                            num_cb=num_cb, policy=grant)
                    total += 1
        elif os.path.isfile(path):
            key_name = os.path.split(path)[1]
            copy_file = True
            if no_overwrite:
                if b.get_key(key_name):
                    copy_file = False
                    if not quiet:
                        print 'Skipping %s as it exists in s3' % path
            if copy_file:
                k = b.new_key(key_name)
                k.set_contents_from_filename(path, cb=cb, num_cb=num_cb, policy=grant)
    else:
        print usage()

if __name__ == "__main__":
    main()
        
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