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Boxiang Sun
slapos.toolbox
Commits
b02015aa
Commit
b02015aa
authored
Jul 24, 2012
by
Antoine Catton
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Switch from config file to promise based container status
parent
fd20a6d6
Changes
1
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1 changed file
with
52 additions
and
39 deletions
+52
-39
slapos/container/prepare.py
slapos/container/prepare.py
+52
-39
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slapos/container/prepare.py
View file @
b02015aa
...
@@ -22,34 +22,23 @@ def main(sr_directory, partition_list):
...
@@ -22,34 +22,23 @@ def main(sr_directory, partition_list):
'.slapcontainer'
)
'.slapcontainer'
)
if
os
.
path
.
isfile
(
slapcontainer_filename
):
if
os
.
path
.
isfile
(
slapcontainer_filename
):
lock
=
lockfile
.
FileLock
(
slapcontainer_filename
)
lock
=
lockfile
.
FileLock
(
slapcontainer_filename
)
lock
.
acquire
(
timeout
=
0
)
slapcontainer_conf
=
ConfigParser
.
ConfigParser
()
slapcontainer_conf
.
read
(
slapcontainer_filename
)
try
:
try
:
lock
.
acquire
(
timeout
=
0
)
slapcontainer_conf
=
ConfigParser
.
ConfigParser
()
requested_status
=
slapcontainer_conf
.
get
(
'requested'
,
slapcontainer_conf
.
read
(
slapcontainer_filename
)
'status'
)
try
:
if
requested_status
==
'started'
:
requested_status
=
slapcontainer_conf
.
get
(
'requested'
,
if
not
created
(
partition_path
):
'status'
)
create
(
sr_directory
,
partition_path
,
slapcontainer_conf
)
if
not
slapcontainer_conf
.
has_section
(
'current'
):
if
status
(
sr_directory
,
partition_path
)
==
'stopped'
:
slapcontainer_conf
.
add_section
(
'current'
)
start
(
sr_directory
,
partition_path
)
if
not
slapcontainer_conf
.
has_option
(
'current'
,
'created'
):
else
:
slapcontainer_conf
.
set
(
'current'
,
'created'
,
'no'
)
if
status
(
sr_directory
,
partition_path
)
==
'started'
:
if
not
slapcontainer_conf
.
has_option
(
'current'
,
'status'
):
stop
(
sr_directory
,
partition_path
)
slapcontainer_conf
.
set
(
'current'
,
'status'
,
'stopped'
)
if
requested_status
==
'started'
:
if
slapcontainer_conf
.
get
(
'current'
,
'created'
)
==
'no'
:
create
(
sr_directory
,
partition_path
,
slapcontainer_conf
)
slapcontainer_conf
.
set
(
'current'
,
'created'
,
'yes'
)
start
(
sr_directory
,
partition_path
,
slapcontainer_conf
)
else
:
stop
(
sr_directory
,
partition_path
,
slapcontainer_conf
)
finally
:
with
open
(
slapcontainer_filename
,
'w'
)
as
slapcontainer_fp
:
slapcontainer_conf
.
write
(
slapcontainer_fp
)
except
lockfile
.
LockTimeout
:
except
lockfile
.
LockTimeout
:
# Can't do anything, we'll see on the next run
# Can't do anything, we'll see on the next run
pass
pass
...
@@ -58,26 +47,30 @@ def main(sr_directory, partition_list):
...
@@ -58,26 +47,30 @@ def main(sr_directory, partition_list):
def
start
(
sr_directory
,
partition_path
,
conf
):
def
start
(
sr_directory
,
partition_path
):
lxc_start
=
os
.
path
.
join
(
sr_directory
,
lxc_start
=
os
.
path
.
join
(
sr_directory
,
'parts/lxc/bin/lxc-start'
)
'parts/lxc/bin/lxc-start'
)
config_filename
=
os
.
path
.
join
(
partition_path
,
'config'
)
config_filename
=
os
.
path
.
join
(
partition_path
,
'config'
)
call
([
lxc_start
,
'-f'
,
config_filename
])
call
([
lxc_start
,
'-f'
,
config_filename
,
# TODO: Check if container is started,
'-n'
,
os
.
path
.
basename
(
partition_path
),
# Start container
'-d'
])
conf
.
set
(
'current'
,
'status'
,
'started'
)
def
stop
(
sr_directory
,
partition_path
,
conf
):
def
stop
(
sr_directory
,
partition_path
):
# TODO : Check if container is stopped
# TODO : Check if container is stopped
# Stop container
# Stop container
pass
if
conf
.
get
(
'current'
,
'created'
)
==
'yes'
:
destroy
(
partition_path
,
conf
)
def
created
(
partition_path
):
# XXX: Hardcoded
should_exists
=
[
'config'
,
'rootfs'
]
return
all
((
os
.
path
.
exists
(
os
.
path
.
join
(
partition_path
,
f
))
for
f
in
should_exists
))
...
@@ -89,7 +82,7 @@ def create(sr_directory, partition_path, conf):
...
@@ -89,7 +82,7 @@ def create(sr_directory, partition_path, conf):
lxc_filename
=
os
.
path
.
join
(
partition_path
,
'config'
)
lxc_filename
=
os
.
path
.
join
(
partition_path
,
'config'
)
lxc
=
LXCConfig
(
lxc_filename
)
lxc
=
LXCConfig
(
lxc_filename
)
lxc
.
utsname
=
os
.
path
.
basename
(
partition_path
)
lxc
.
utsname
=
os
.
path
.
basename
(
partition_path
)
lxc
.
network
.
vlan
.
type
=
'vlan'
lxc
.
network
.
type
=
'vlan'
lxc
.
network
.
link
=
conf
.
get
(
'information'
,
'interface'
)
lxc
.
network
.
link
=
conf
.
get
(
'information'
,
'interface'
)
lxc
.
network
.
name
=
'eth0'
lxc
.
network
.
name
=
'eth0'
# XXX: Hardcoded netmasks
# XXX: Hardcoded netmasks
...
@@ -101,15 +94,35 @@ def create(sr_directory, partition_path, conf):
...
@@ -101,15 +94,35 @@ def create(sr_directory, partition_path, conf):
lxc_file
.
write
(
str
(
lxc
))
lxc_file
.
write
(
str
(
lxc
))
def
destroy
(
partition_path
,
conf
):
def
destroy
(
partition_path
):
# TODO: Destroy container
# TODO: Destroy container
pass
pass
def
status
(
sr_directory
,
partition_path
):
lxc_info
=
call
([
os
.
path
.
join
(
sr_directory
,
'parts/lxc/bin/lxc-info'
),
'-n'
,
os
.
path
.
basename
(
partition_path
)])
if
'RUNNING'
in
lxc_info
:
return
'started'
else
:
return
'stopped'
def
call
(
command_line
):
def
call
(
command_line
):
process
=
subprocess
.
Popen
(
command_line
,
stdin
=
subprocess
.
PIPE
)
# for debug :
# print ' '.join(command_line)
process
=
subprocess
.
Popen
(
command_line
,
stdin
=
subprocess
.
PIPE
,
stdout
=
subprocess
.
PIPE
)
process
.
stdin
.
flush
()
process
.
stdin
.
flush
()
process
.
stdin
.
close
()
process
.
stdin
.
close
()
if
process
.
wait
()
!=
0
:
if
process
.
wait
()
!=
0
:
raise
SlapContainerError
(
"Subprocess call failed"
)
raise
SlapContainerError
(
"Subprocess call failed"
)
out
=
process
.
stdout
.
read
()
# for debug :
# print out
return
out
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