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cfg_format.py
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cfg_format.py
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import yaml
from collections import defaultdict
from .cfg_formatter import CfgField, CfgMap, CfgMapList, CfgMapMap, CfgReference, NullType, TopLvlCfg
from .fmt_config import FmtConfig
from .include_loader import IncludeLoader
class SshCfg(CfgMap):
_fields = [
CfgField('user', str, '{0.user}'),
CfgField('key', str, '~/.ssh/id_rsa'),
CfgField('port', int, 22),
]
class CmdsCfg(CfgMapList):
_fields = [
CfgField('cmd', str, required=True),
CfgField('checked_rtn', [int, bool, NullType], default=0, aliases=('check_rtn')),
]
class HostsCfg(CfgMapMap):
_fields = [
CfgField('hostname', None, required=True, aliases=('addr')),
#FIXME: to enable $(...) expanding to a list, hostname cannot set list_ok
CfgField('name', str, aliases='_name'),
CfgMap('ssh', inherit=SshCfg),
CfgField('log_dir', str, default="{0.log_dir}"),
CfgField('sudo_passwd', str, default=None),
CfgField('enabled', bool, default=True)
]
_reserved_fields = [
CfgField('output_dir', str, default="$(os.path.join('{host.log_dir}', '{0.label}'))")
]
class FilesCfg(CfgMapMap):
_fields = [
CfgField('src', str, required=True),
CfgField('dst', str, required=True),
CfgField('name', str, aliases='_name'),
CfgField('enabled', bool, default=True),
CfgReference('hosts', HostsCfg, list_ok = True, required=True, aliases=('host'))
]
_computed_fields = [
CfgField('host', lambda : defaultdict(str))
]
class ProgramLogCfg(CfgMap):
_fields = [
CfgField('dir', str, default=''),
CfgField('out', str),
CfgField('err', str),
CfgField('append', bool, default=False)
]
class ProgramsCfg(CfgMapMap):
_fields = [
CfgReference('hosts', HostsCfg, list_ok = True, aliases=('host')),
CfgField('name', str, aliases=('_name')),
CfgField('start', str, required=True),
CfgField('stop', str, default=None),
# TODO: Add 'kill' field
ProgramLogCfg('log'),
CfgField('duration_reduced_error', bool, default=True),
CfgField('duration_exceeded_error', bool, default=False),
CfgField('bg', bool, default=False),
CfgField('checked_rtn', [int, bool, NullType], default=None, aliases=('check_rtn')),
CfgField('sudo', bool, default=False),
CfgField('defaults', dict, default=dict())
]
class CommandsCfg(CfgMapList):
_fields = [
CfgReference('program', ProgramsCfg, required=True),
CfgReference('hosts', HostsCfg, sibling_inherit=['program', 'hosts'], aliases=('host'), list_ok = True),
CfgField('begin', float, required=False),
CfgField('name', str, default='{program.name}'),
CfgField('min_duration', [float, NullType], default=None),
CfgField('max_duration', [float, NullType], default=None),
CfgField('start_after', str, required=False),
CfgField('stop_after', str, required=False),
CfgField('enabled', bool, default=True)
]
_reserved_fields = [
CfgField('log_dir', str, default="$(os.path.join('{host.output_dir}', '{program.log.dir}'))")
]
_computed_fields = [
CfgField('host_idx', int),
CfgField('host', lambda : defaultdict(str)),
CfgField('pid', int)
]
_child_inherit = ['program', 'defaults']
class CfgFmt(TopLvlCfg):
_fields = [
CfgField('log_dir', str, default="~/shremote_logs"),
SshCfg('ssh'),
CmdsCfg('init_cmds', format_root=True),
CmdsCfg('post_cmds', format_root=True),
HostsCfg('hosts'),
FilesCfg('files', format_root=True),
ProgramsCfg('programs'),
CommandsCfg('commands', format_root=True)
]
_computed_fields = [
CfgField('user', str),
CfgField('label', str),
CfgField('args', defaultdict),
CfgField('output_dir', str),
CfgField('cfg_dir', str),
]
def load_cfg(cfg, fmt = CfgFmt()):
if isinstance(cfg, str):
with open(cfg, 'r') as f:
cfg = yaml.load(f, Loader=IncludeLoader)
cfg = FmtConfig(cfg)
fmt.format(cfg)
return cfg
if __name__ == '__main__':
import sys
cfg = load_cfg(sys.argv[1])
cfg.user = 'YourUsername'
cfg.label = 'ShremoteLabel'
cfg.cfg_dir = sys.argv[1]
default_kwargs = dict(
host_idx = -1,
log_dir = 'prog_log_dir',
)
for cmd in cfg.commands:
start = cmd.program.start.format(host=cmd.hosts[0], **default_kwargs)
begin = cmd.begin.format()
print("Command '{}'\n\tstarts at time {}".format(start, begin))