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//lib/python2.7/dist-packages/euca2ools/commands/s3/postobject.py

# Copyright 2014 Eucalyptus Systems, Inc.
#
# Redistribution and use of this software in source and binary forms,
# with or without modification, are permitted provided that the following
# conditions are met:
#
#   Redistributions of source code must retain the above copyright notice,
#   this list of conditions and the following disclaimer.
#
#   Redistributions in binary form must reproduce the above copyright
#   notice, this list of conditions and the following disclaimer in the
#   documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

import argparse
import base64
import sys

from requestbuilder import Arg, MutuallyExclusiveArgList
from requestbuilder.exceptions import ArgumentError

from euca2ools.commands.argtypes import b64encoded_file_contents
from euca2ools.commands.s3 import S3Request

class PostObject(S3Request):
    DESCRIPTION = ('Upload an object to the server using an upload policy\n\n'
                   'Note that uploading a large file to a region other than '
                   'the one the bucket is may result in "Broken pipe" errors '
                   'or other connection problems that this program cannot '
                   'detect.')
    AUTH_CLASS = None
    ARGS = [Arg('source', metavar='FILE', route_to=None,
                help='file to upload (required)'),
            Arg('dest', metavar='BUCKET/KEY', route_to=None,
                help='bucket and key name to upload the object to (required)'),
            MutuallyExclusiveArgList(
                Arg('--policy', dest='Policy', metavar='POLICY',
                    type=base64.b64encode,
                    help='upload policy to use for authorization'),
                Arg('--policy-file', dest='Policy', metavar='FILE',
                    type=b64encoded_file_contents, help='''file containing the
                    upload policy to use for authorization'''))
            .required(),
            Arg('--policy-signature', dest='Signature', required=True,
                help='signature for the upload policy (required)'),
            Arg('-I', '--access-key-id', dest='AWSAccessKeyId', required=True,
                metavar='KEY_ID', help='''ID of the access key that signed the
                upload policy (required)'''),
            # --security-token is an extension meant for eucalyptus's back end
            # to use for BundleInstance operations started by the web console.
            # https://eucalyptus.atlassian.net/browse/EUCA-9911
            # https://eucalyptus.atlassian.net/browse/TOOLS-511
            Arg('--security-token', dest='x-amz-security-token',
                default=argparse.SUPPRESS, help=argparse.SUPPRESS),
            Arg('--acl', default=argparse.SUPPRESS, choices=(
                'private', 'public-read', 'public-read-write',
                'authenticated-read', 'bucket-owner-read',
                'bucket-owner-full-control', 'aws-exec-read',
                'ec2-bundle-read'), help='''the ACL the object should have
                once uploaded.  Take care to ensure this satisfies any
                restrictions the upload policy may contain.'''),
            Arg('--mime-type', dest='Content-Type', default=argparse.SUPPRESS,
                help='MIME type for the file being uploaded')]
    METHOD = 'POST'

# noinspection PyExceptionInherit
    def configure(self):
        S3Request.configure(self)

if self.args['source'] == '-':
            self.files['file'] = sys.stdin
        elif isinstance(self.args['source'], basestring):
            self.files['file'] = open(self.args['source'])
        else:
            self.files['file'] = self.args['source']
        bucket, _, key = self.args['dest'].partition('/')
        if not bucket:
            raise ArgumentError('destination bucket name must be non-empty')
        if not key:
            raise ArgumentError('destination key name must be non-empty')

# noinspection PyExceptionInherit
    def preprocess(self):
        # FIXME:  This should really stream the contents of the source rather
        # than reading it all into memory at once, but at the moment doing so
        # would require me to write a multipart MIME encoder that supports
        # both streaming and file rewinding.  Patches that do that are very
        # welcome.
        #
        # FIXME:  While you're in there, would you mind adding progress bar
        # support?  8^)
        self.path, _, self.params['key'] = self.args['dest'].partition('/')
        self.body = self.params
        self.params = None