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#!/usr/bin/env python
# We're using optparse because we need to support 2.6
# which doesn't have argparse. Given that argparse is
# a dependency that eventually gets installed, we could
# try to bootstrap, but using optparse is just easier.
import
optparse
import
os
import
platform
import
sys
import
subprocess
import
tarfile
import
tempfile
from
contextlib
import
contextmanager
PACKAGES_DIR
=
os
.
path
.
join
(
os
.
path
.
dirname
(
os
.
path
.
abspath
(
__file__
)),
'packages'
)
INSTALL_DIR
=
os
.
path
.
expanduser
(
os
.
path
.
join
(
'~'
,
'.local'
,
'lib'
,
'aws'
))
class
BadRCError
(
Exception
):
pass
@
contextmanager
def
cd
(
dirname
):
original
=
os
.
getcwd
()
os
.
chdir
(
dirname
)
try
:
yield
finally
:
os
.
chdir
(
original
)
def
run
(
cmd
):
sys
.
stdout
.
write
(
"Running cmd: %s
\n
"
%
cmd
)
p
=
subprocess
.
Popen
(
cmd
,
shell
=
True
,
stdout
=
subprocess
.
PIPE
,
stderr
=
subprocess
.
STDOUT
)
stdout
,
stderr
=
p
.
communicate
()
if
p
.
returncode
!=
0
:
raise
BadRCError
(
"Bad rc (%s) for cmd '%s': %s"
%
(
p
.
returncode
,
cmd
,
stdout
+
stderr
))
return
stdout
def
bin_path
():
"""
Get the system's binary path, either `bin` on reasonable
systems or `Scripts` on Windows.
"""
path
=
'bin'
if
platform
.
system
()
==
'Windows'
:
path
=
'Scripts'
return
path
def
create_install_structure
(
working_dir
,
install_dir
):
if
not
os
.
path
.
isdir
(
install_dir
):
os
.
makedirs
(
install_dir
)
_create_virtualenv
(
location
=
install_dir
,
working_dir
=
working_dir
)
def
_create_virtualenv
(
location
,
working_dir
):
# working_dir is used (generally somewhere in /tmp) so that we
# don't modify the install/packages directories.
with
cd
(
PACKAGES_DIR
):
venv
=
[
p
for
p
in
os
.
listdir
(
'.'
)
if
p
.
startswith
(
'virtualenv'
)][
0
]
compressed
=
tarfile
.
open
(
venv
)
compressed
.
extractall
(
path
=
working_dir
)
compressed
.
close
()
with
cd
(
working_dir
):
# We know that virtualenv is the only dir in this directory
# so we can listdir()[0] it.
with
cd
(
os
.
listdir
(
'.'
)[
0
]):
run
(
'%s virtualenv.py --python %s %s'
%
(
sys
.
executable
,
sys
.
executable
,
location
))
def
create_working_dir
():
d
=
tempfile
.
mkdtemp
()
return
d
def
pip_install_packages
(
install_dir
):
cli_tarball
=
[
p
for
p
in
os
.
listdir
(
PACKAGES_DIR
)
if
p
.
startswith
(
'awscli'
)]
assert
len
(
cli_tarball
)
==
1
cli_tarball
=
cli_tarball
[
0
]
pip_script
=
os
.
path
.
join
(
install_dir
,
bin_path
(),
'pip'
)
with
cd
(
PACKAGES_DIR
):
run
(
'%s install --no-index --find-links file://%s %s'
%
(
pip_script
,
PACKAGES_DIR
,
cli_tarball
))
def
create_symlink
(
real_location
,
symlink_name
):
if
os
.
path
.
isfile
(
symlink_name
):
print
(
"Symlink already exists: %s"
%
symlink_name
)
print
(
"Removing symlink."
)
os
.
remove
(
symlink_name
)
os
.
symlink
(
real_location
,
symlink_name
)
return
True
def
main
():
parser
=
optparse
.
OptionParser
()
parser
.
add_option
(
'-i'
,
'--install-dir'
,
help
=
"The location to install "
"the AWS CLI. The default value is ~/.local/lib/aws"
,
default
=
INSTALL_DIR
)
parser
.
add_option
(
'-b'
,
'--bin-location'
,
help
=
"If this argument is "
"provided, then a symlink will be created at this "
"location that points to the aws executable. "
"This argument is useful if you want to put the aws "
"executable somewhere already on your path, e.g. "
"-b /usr/local/bin/aws. This is an optional argument. "
"If you do not provide this argument you will have to "
"add INSTALL_DIR/bin to your PATH."
)
opts
=
parser
.
parse_args
()[
0
]
working_dir
=
create_working_dir
()
create_install_structure
(
working_dir
,
opts
.
install_dir
)
pip_install_packages
(
opts
.
install_dir
)
real_location
=
os
.
path
.
join
(
opts
.
install_dir
,
bin_path
(),
'aws'
)
if
opts
.
bin_location
and
create_symlink
(
real_location
,
opts
.
bin_location
):
print
(
"You can now run: %s --version"
%
opts
.
bin_location
)
else
:
print
(
"You can now run: %s --version"
%
real_location
)
if
__name__
==
'__main__'
:
main
()
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