def rename_container(self, container, name):
# TODO(emilien) podman doesn't support rename, we'll handle it
# in paunch itself for now
configs = self.list_configs()
config_id, config = self.discover_container_config(
configs, container, name)
# Get config_data dict by the discovered conf ID,
# paunch needs it for maintaining idempotency within a conf ID
filter_names = ("[] | [?(Name!='%s' && "
"Config.Labels.config_id=='%s')]"
".Name" % (container, config_id))
filter_cdata = ("[] | [?(Name!='%s' && "
"Config.Labels.config_id=='%s')]"
".Config.Labels.config_data" % (container, config_id))
names = None
cdata = None
try:
names = jmespath.search(filter_names, configs[config_id])
cdata = jmespath.search(filter_cdata, configs[config_id])
except jmespath.exceptions.LexerError:
self.log.error("Failed to rename a container %s into %s: "
"used a bad search pattern" % (container, name))
return
if not names or not cdata:
self.log.error("Failed to rename a container %s into %s: "
"no config_data was found" % (container, name))
return
# Rename the wanted container in the config_data fetched from the
# discovered config
config_data = dict(zip(names, map(json.loads, cdata)))
config_data[name] = json.loads(
config.get('Config').get('Labels').get('config_data'))
# Re-apply a container under its amended name using the fetched configs
self.log.debug("Renaming a container known as %s into %s, "
"via re-applying its original config" %
(container, name))
self.log.debug("Removing the destination container %s" % name)
self.stop_container(name)
self.remove_container(name)
self.log.debug("Removing a container known as %s" % container)
self.stop_container(container)
self.remove_container(container)
builder = podman.PodmanBuilder(
config_id=config_id,
config=config_data,
runner=self,
labels=None,
log=self.log,
cont_log_path=self.cont_log_path,
healthcheck_disabled=self.healthcheck_disabled)
builder.apply()
def apply(config_id, config, managed_by, labels=None, cont_cmd='podman',
default_runtime=None, log_level=None, log_file=None,
cont_log_path=None, healthcheck_disabled=False):
"""Execute supplied container configuration.
:param str config_id: Unique config ID, should not be re-used until any
running containers with that config ID have been
deleted.
:param dict config: Configuration data describing container actions to
apply.
:param str managed_by: Name of the tool managing the containers. Only
containers labelled with this will be modified.
:param dict labels: Optional keys/values of labels to apply to containers
created with this invocation.
:param str cont_cmd: Optional override to the container command to run.
:param str default_runtime: (deprecated) does nothing.
:param int log_level: optional log level for loggers
:param str log_file: optional log file for messages
:param str cont_log_path: optional log path for containers. Works only for
podman engine. Must be an absolute path.
:param bool healthcheck_disabled: optional boolean to disable container
healthcheck.
:returns (list, list, int) lists of stdout and stderr for each execution,
and a single return code representing the
overall success of the apply.
:rtype: tuple
"""
log = common.configure_logging(__name__, log_level, log_file)
if default_runtime:
log.warning("DEPRECATION: 'default_runtime' does nothing, "
"use 'cont_cmd' instead")
if cont_cmd == 'podman':
r = runner.PodmanRunner(managed_by, cont_cmd=cont_cmd, log=log)
builder = podman.PodmanBuilder(
config_id=config_id,
config=config,
runner=r,
labels=labels,
log=log,
cont_log_path=cont_log_path,
healthcheck_disabled=healthcheck_disabled
)
else:
r = runner.DockerRunner(managed_by, cont_cmd=cont_cmd, log=log)
builder = compose1.ComposeV1Builder(
config_id=config_id,
config=config,
runner=r,
labels=labels,
log=log
)
return builder.apply()
def rename_container(self, container, name):
# TODO(emilien) podman doesn't support rename, we'll handle it
# in paunch itself for now
# Find the "container's" config & conf ID in the known configs
configs = self.list_configs()
config_id, config = self.discover_container_config(
configs, container, name)
try:
# Get the neighbors' config_data by the discovered conf ID,
# paunch needs it for maintaining idempotency within a conf ID
jquerry=("[] | [?(Name!='%s' && "
"Config.Labels.config_id=='%s')]"
".Name" % (container, config_id))
names = jmespath.search(jquerry, configs[config_id])
jquerry=("[] | [?(Name!='%s' && "
"Config.Labels.config_id=='%s')]"
".Config.Labels.config_data" % (container, config_id))
values = jmespath.search(jquerry, configs[config_id])
config_data = dict(zip(names, map(json.loads, values)))
# Rename the wanted container in the config_data fetched from the
# discovered config
config_data[name] = json.loads(
config.get('Config').get('Labels').get('config_data'))
except Exception:
self.log.error("Failed to rename a container %s into %s: "
"no config_data was found" % (container, name))
return
# Re-apply a container under its amended name using the fetched configs
self.log.debug("Renaming a container known as %s into %s, "
"via re-applying its original config" %
(container, name))
self.log.debug("Removing the destination container %s" % name)
self.stop_container(name)
self.remove_container(name)
self.log.debug("Removing a container known as %s" % container)
self.stop_container(container)
self.remove_container(container)
builder = podman.PodmanBuilder(
config_id=config_id,
config=config_data,
runner=self,
labels=None,
log=self.log
)
builder.apply()
def test_cont_run_args(self):
config = {
'one': {
'image': 'centos:7',
'privileged': True,
'user': '******',
'net': 'host',
'ipc': 'host',
'pid': 'container:bar',
'uts': 'host',
'restart': 'always',
'env_file': '/tmp/foo.env',
'log_tag': '{{.ImageName}}/{{.Name}}/{{.ID}}',
'cpu_shares': 600,
'mem_limit': '1G',
'memswap_limit': '1G',
'mem_swappiness': '60',
'security_opt': 'label:disable',
'cap_add': ['SYS_ADMIN', 'SETUID'],
'cap_drop': ['NET_RAW'],
'hostname': 'foohostname',
'extra_hosts': ['foohost:127.0.0.1', 'barhost:127.0.0.2']
}
}
builder = podman.PodmanBuilder('foo', config, None)
cmd = ['podman', 'run', '--name', 'one']
builder.container_run_args(cmd, 'one')
self.assertEqual([
'podman', 'run', '--name', 'one',
'--conmon-pidfile=/var/run/one.pid', '--detach=true',
'--env-file=/tmp/foo.env', '--net=host', '--ipc=host',
'--pid=container:bar', '--uts=host', '--privileged=true',
'--user=bar', '--log-opt=tag={{.ImageName}}/{{.Name}}/{{.ID}}',
'--cpu-shares=600', '--memory=1G', '--memory-swap=1G',
'--memory-swappiness=60', '--security-opt=label:disable',
'--hostname=foohostname', '--add-host=foohost:127.0.0.1',
'--add-host=barhost:127.0.0.2', '--cap-add=SYS_ADMIN',
'--cap-add=SETUID', '--cap-drop=NET_RAW', 'centos:7'
], cmd)
def debug(config_id, container_name, action, config, managed_by, labels=None,
cont_cmd='podman', default_runtime=None, log_level=None,
log_file=None):
"""Execute supplied container configuration.
:param str config_id: Unique config ID, should not be re-used until any
running containers with that config ID have been
deleted.
:param str container_name: Name of the container in the config you
wish to manipulate.
:param str action: Action to take.
:param dict config: Configuration data describing container actions to
apply.
:param str managed_by: Name of the tool managing the containers. Only
containers labeled with this will be modified.
:param dict labels: Optional keys/values of labels to apply to containers
created with this invocation.
:param str cont_cmd: Optional override to the container command to run.
:param str default_runtime: (deprecated) does nothing.
:param int log_level: optional log level for loggers
:param int log_file: optional log file for messages
:returns integer return value from running command or failure for any
other reason.
:rtype: int
"""
log = common.configure_logging(__name__, log_level, log_file)
if default_runtime:
log.warning("DEPRECATION: 'default_runtime' does nothing, "
"use 'cont_cmd' instead")
if cont_cmd == 'podman':
r = runner.PodmanRunner(managed_by, cont_cmd=cont_cmd, log=log)
builder = podman.PodmanBuilder(
config_id=config_id,
config=config,
runner=r,
labels=labels,
log=log
)
else:
r = runner.DockerRunner(managed_by, cont_cmd=cont_cmd, log=log)
builder = compose1.ComposeV1Builder(
config_id=config_id,
config=config,
runner=r,
labels=labels,
log=log
)
if action == 'print-cmd':
cmd = [
r.cont_cmd,
'run',
'--name',
r.unique_container_name(container_name)
]
builder.container_run_args(cmd, container_name)
print(' '.join(cmd))
elif action == 'run':
cmd = [
r.cont_cmd,
'run',
'--name',
r.unique_container_name(container_name)
]
builder.container_run_args(cmd, container_name)
return r.execute_interactive(cmd, log)
elif action == 'dump-yaml':
print(yaml.safe_dump(config, default_flow_style=False))
elif action == 'dump-json':
print(json.dumps(config, indent=4))
else:
raise ValueError('action should be one of: "dump-json", "dump-yaml"',
'"print-cmd", or "run"')
