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Add cancel_func to virt and novirt_install functions

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In addition to monitoring the logs for errors, call a function (or
functions) that tell it to cancel the anaconda process and cleanup.

Also check for a cancel after creating the squashfs image for live-iso
since that's a long running process.

This required adding a new argument to a number of existing functions,
passing it down to VirtualInstall and novirt_install where the function
is called.

(cherry picked from commit 4b84475612)

Resolves: rhbz#1659129
This commit is contained in:
Brian C. Lane 2019-02-19 16:46:07 -08:00
parent ade25f34b3
commit 48c8ae6819
3 changed files with 40 additions and 19 deletions
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2
src/pylorax/api/queue.py
View File

@ -241,7 +241,7 @@ def make_compose(cfg, results_dir):
else:
open(joinpaths(results_dir, install_cfg.image_name), "w").write("TEST IMAGE")
else:
run_creator(install_cfg, callback_func=cancel_build)
run_creator(install_cfg, cancel_func=cancel_build)
# Extract the results of the compose into results_dir and cleanup the compose directory
move_compose_results(install_cfg, results_dir)

17
src/pylorax/creator.py
View File

@ -405,7 +405,7 @@ def make_squashfs(disk_img, work_dir, compression="xz"):
remove(joinpaths(work_dir, "runtime"))
def make_image(opts, ks, callback_func=None):
def make_image(opts, ks, cancel_func=None):
"""
Install to an image
@ -423,12 +423,12 @@ def make_image(opts, ks, callback_func=None):
try:
if opts.no_virt:
novirt_install(opts, disk_img, disk_size, ks.handler.method.url, callback_func=callback_func)
novirt_install(opts, disk_img, disk_size, ks.handler.method.url, cancel_func=cancel_func)
else:
install_log = os.path.abspath(os.path.dirname(opts.logfile))+"/virt-install.log"
log.info("install_log = %s", install_log)
virt_install(opts, install_log, disk_img, disk_size)
virt_install(opts, install_log, disk_img, disk_size, cancel_func=cancel_func)
except InstallError as e:
log.error("Install failed: %s", e)
if not opts.keep_image:
@ -489,7 +489,7 @@ def make_live_images(opts, work_dir, root_dir, rootfs_image=None, size=None):
return work_dir
def run_creator(opts, callback_func=None):
def run_creator(opts, cancel_func=None):
"""Run the image creator process
:param opts: Commandline options to control the process
@ -537,7 +537,10 @@ def run_creator(opts, callback_func=None):
# Make the image. Output of this is either a partitioned disk image or a fsimage
# Can also fail with InstallError
disk_img = make_image(opts, ks, callback_func=callback_func)
disk_img = make_image(opts, ks, cancel_func=cancel_func)
if cancel_func and cancel_func():
raise RuntimeError("image creation canceled")
# Only create the disk image, return that now
if opts.image_only:
@ -552,6 +555,10 @@ def run_creator(opts, callback_func=None):
disk_img = opts.fs_image or disk_img
make_squashfs(disk_img, work_dir)
if cancel_func and cancel_func():
raise RuntimeError("ISO creation canceled")
with Mount(disk_img, opts="loop") as mount_dir:
result_dir = make_livecd(opts, mount_dir, work_dir)
else:

40
src/pylorax/installer.py
View File

@ -18,6 +18,7 @@ import logging
log = logging.getLogger("pylorax")
import os
import glob
import shutil
import sys
import subprocess
@ -116,7 +117,7 @@ class VirtualInstall( object ):
"""
def __init__( self, iso, ks_paths, disk_img, img_size=2,
kernel_args=None, memory=1024, vnc=None, arch=None,
log_check=None, virtio_host="127.0.0.1", virtio_port=6080,
cancel_func=None, virtio_host="127.0.0.1", virtio_port=6080,
qcow2=False, boot_uefi=False, ovmf_path=None):
"""
Start the installation
@ -211,14 +212,14 @@ class VirtualInstall( object ):
# TODO: If vnc has been passed, we should look up the port and print that
# for the user at this point
while dom.isActive() and not log_check():
while dom.isActive() and not (cancel_func and cancel_func()):
sys.stdout.write(".")
sys.stdout.flush()
sleep(10)
print
if log_check():
log.info( "Installation error detected. See logfile." )
if cancel_func and cancel_func():
log.info( "Installation error or cancel detected. See logfile." )
else:
log.info( "Install finished. Or at least virt shut down." )
@ -234,7 +235,8 @@ class VirtualInstall( object ):
# Undefine the virt, UEFI installs need to have --nvram passed
subprocess.call(["virsh", "undefine", self.virt_name, "--nvram"])
def novirt_install(opts, disk_img, disk_size, repo_url, callback_func=None):
def novirt_install(opts, disk_img, disk_size, repo_url, cancel_func=None):
"""
Use Anaconda to install to a disk image
"""
@ -282,10 +284,14 @@ def novirt_install(opts, disk_img, disk_size, repo_url, callback_func=None):
# Create the sparse image
mksparse(disk_img, disk_size * 1024**3)
cancel_funcs = []
if cancel_func is not None:
cancel_funcs.append(cancel_func)
# Make sure anaconda has the right product and release
os.environ["ANACONDA_PRODUCTNAME"] = opts.project
os.environ["ANACONDA_PRODUCTVERSION"] = opts.releasever
rc = execWithRedirect("anaconda", args, callback_func=callback_func)
rc = execWithRedirect("anaconda", args, callback_func=lambda : any(f() for f in cancel_funcs))
# Move the anaconda logs over to a log directory
log_dir = os.path.abspath(os.path.dirname(opts.logfile))
@ -306,10 +312,13 @@ def novirt_install(opts, disk_img, disk_size, repo_url, callback_func=None):
if disk_img:
dm_name = os.path.splitext(os.path.basename(disk_img))[0]
dm_path = "/dev/mapper/"+dm_name
if os.path.exists(dm_path):
dm_detach(dm_path)
loop_detach(get_loop_name(disk_img))
log.debug("Removing device-mapper setup on %s", dm_name)
for d in sorted(glob.glob("/dev/mapper/"+dm_name+"*"), reverse=True):
dm_detach(d)
log.debug("Removing loop device for %s", disk_img)
loop_detach("/dev/"+get_loop_name(disk_img))
# if selinux_enforcing:
# selinux.security_setenforce(1)
@ -342,7 +351,7 @@ def novirt_install(opts, disk_img, disk_size, repo_url, callback_func=None):
execWithRedirect("mv", ["-f", qcow2_img, disk_img], raise_err=True)
def virt_install(opts, install_log, disk_img, disk_size):
def virt_install(opts, install_log, disk_img, disk_size, cancel_func=None):
"""
Use virt-install to install to a disk image
@ -352,6 +361,9 @@ def virt_install(opts, install_log, disk_img, disk_size):
"""
iso_mount = IsoMountpoint(opts.iso, opts.location)
log_monitor = LogMonitor(install_log)
cancel_funcs = [log_monitor.server.log_check]
if cancel_func is not None:
cancel_funcs.append(cancel_func)
kernel_args = ""
if opts.kernel_args:
@ -375,7 +387,7 @@ def virt_install(opts, install_log, disk_img, disk_size):
try:
virt = VirtualInstall(iso_mount, opts.ks, diskimg_path, disk_size,
kernel_args, opts.ram, opts.vnc, opts.arch,
log_check = log_monitor.server.log_check,
cancel_func = lambda : any(f() for f in cancel_funcs),
virtio_host = log_monitor.host,
virtio_port = log_monitor.port,
qcow2=opts.qcow2, boot_uefi=opts.virt_uefi,
@ -391,7 +403,9 @@ def virt_install(opts, install_log, disk_img, disk_size):
iso_mount.umount()
if log_monitor.server.log_check():
raise InstallError("virt_install failed")
raise InstallError("virt_install failed. See logfile.")
elif cancel_func and cancel_func():
raise InstallError("virt_install canceled by cancel_func")
if opts.make_fsimage:
mkdiskfsimage(diskimg_path, disk_img, label=opts.fs_label)