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Steven Armstrong 2011-10-14 23:30:08 +02:00
commit 1e57ae469e
4 changed files with 46 additions and 486 deletions
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46
doc/dev/logs/2011-10-14.error-output Normal file
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[23:24] brief:cdist% ./bin/cdist config -c ~/p/cdist-nutzung -v ikq04.ethz.ch
INFO: ikq04.ethz.ch: Deploying to ikq04.ethz.ch
INFO: ikq04.ethz.ch: Running object manifests and type explorers
cat: /home/users/nico/.tmp/tmpf969y2/out/object/__addifnosuchline/ssh-root-blukas/.cdist/parameter/line: No such file or directory
#!/bin/sh
#
# 2010-2011 Daniel Roth (dani-cdist@d-roth.li)
#
# This file is part of cdist.
#
# cdist is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# cdist is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with cdist. If not, see <http://www.gnu.org/licenses/>.
#
#
if [ -f "$__object/parameter/file" ]; then
file=$(cat "$__object/parameter/file")
else
file="/$__object_id"
fi
regex=$(cat "$__object/parameter/line")
if [ -f "$file" ]; then
grep -q "^$regex\$" "$file"
if [ $? -eq 1 ]; then
echo "NOTFOUND"
else
echo "FOUND"
fi
else
echo "NOTFOUND"
fi
ERROR: ikq04.ethz.ch: Code that raised the error:
None
ERROR: Remote script execution failed: /var/lib/cdist/conf/type/__addifnosuchline/explorer/findline ['ssh', '-o', 'User=root', '-q', 'ikq04.ethz.ch', '__explorer=/var/lib/cdist/conf/explorer', '__object_fq=__addifnosuchline/ssh-root-blukas/.cdist', '__target_host=ikq04.ethz.ch', '__object_id=ssh-root-blukas', '__type_explorer=/var/lib/cdist/conf/type/__addifnosuchline/explorer', '__object=/home/users/nico/.tmp/tmpf969y2/out/object/__addifnosuchline/ssh-root-blukas/.cdist', '/bin/sh', '-e', '/var/lib/cdist/conf/type/__addifnosuchline/explorer/findline']
[23:25] brief:cdist%

96
lib/cdist/exec.py
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# -*- coding: utf-8 -*-
#
# 2011 Nico Schottelius (nico-cdist at schottelius.org)
#
# This file is part of cdist.
#
# cdist is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# cdist is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with cdist. If not, see <http://www.gnu.org/licenses/>.
#
#
import logging
import subprocess
import cdist
class Wrapper(object):
def __init__(self, target_host, remote_exec, remote_copy):
self.target_host = target_host
self.remote_exec = remote_exec
self.remote_copy = remote_copy
self.log = logging.getLogger(self.target_host)
def remote_mkdir(self, directory):
"""Create directory on remote side"""
self.run_or_fail(["mkdir", "-p", directory], remote=True)
def remove_remote_path(self, destination):
"""Ensure path on remote side vanished"""
self.run_or_fail(["rm", "-rf", destination], remote=True)
def transfer_path(self, source, destination):
"""Transfer directory and previously delete the remote destination"""
self.remove_remote_path(destination)
self.run_or_fail(self.remote_copy.split() +
["-r", source, self.target_host + ":" + destination])
def shell_run_or_debug_fail(self, script, *args, remote=False, **kargs):
# Manually execute /bin/sh, because sh -e does what we want
# and sh -c -e does not exit if /bin/false called
args[0][:0] = [ "/bin/sh", "-e" ]
if remote:
remote_prefix = self.remote_exec.split()
remote_prefix.append(self.target_host)
args[0][:0] = remote_prefix
self.log.debug("Shell exec cmd: %s", args)
if 'env' in kargs:
self.log.debug("Shell exec env: %s", kargs['env'])
try:
subprocess.check_call(*args, **kargs)
except subprocess.CalledProcessError:
self.log.error("Code that raised the error:\n")
if remote:
self.run_or_fail(["cat", script], remote=remote)
else:
try:
script_fd = open(script)
print(script_fd.read())
script_fd.close()
except IOError as error:
raise cdist.Error(str(error))
raise cdist.Error("Command failed (shell): " + " ".join(*args))
except OSError as error:
raise cdist.Error(" ".join(*args) + ": " + error.args[1])
def run_or_fail(self, *args, remote=False, **kargs):
if remote:
remote_prefix = self.remote_exec.split()
remote_prefix.append(self.target_host)
args[0][:0] = remote_prefix
self.log.debug("Exec: " + " ".join(*args))
try:
subprocess.check_call(*args, **kargs)
except subprocess.CalledProcessError:
raise cdist.Error("Command failed: " + " ".join(*args))
except OSError as error:
raise cdist.Error(" ".join(*args) + ": " + error.args[1])

272
lib/cdist/manifest.py
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#!/usr/bin/env python3
# -*- coding: utf-8 -*-
#
# 2010-2011 Nico Schottelius (nico-cdist at schottelius.org)
#
# This file is part of cdist.
#
# cdist is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# cdist is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with cdist. If not, see <http://www.gnu.org/licenses/>.
#
#
import logging
import os
import stat
import shutil
import sys
import tempfile
import time
import cdist.core
import cdist.exec
CODE_HEADER = "#!/bin/sh -e\n"
class ConfigInstall:
"""Cdist main class to hold arbitrary data"""
def __init__(self,
target_host,
initial_manifest=False,
base_path=False,
exec_path=sys.argv[0],
debug=False):
self.context = cdist.context.Context(
target_host=target_host,
initial_manifest=initial_manifest,
base_path=base_path,
exec_path=sys.argv[0],
debug=debug)
self.exec_wrapper = cdist.exec.Wrapper(
targe_host = self.target_host,
remote_exec=os.environ['__remote_exec'].split(),
remote_copy=os.environ['__remote_copy'].split()
)
self.log = logging.getLogger(self.context.target_host)
# Setup env to be used by others - FIXME
self.__init_env()
# Create directories
self.__init_local_paths()
self.__init_remote_paths()
def __init_remote_paths(self):
"""Initialise remote directory structure"""
self.remove_remote_path(self.context.remote_base_path)
self.remote_mkdir(self.context.remote_base_path)
self.remote_mkdir(self.context.remote_conf_path)
def __init_local_paths(self):
"""Initialise local directory structure"""
# Create base dir, if user supplied and not existing
if not os.path.isdir(self.context.base_path):
os.mkdir(self.context.base_path)
# FIXME: raise more beautiful exception / Steven: handle exception
os.mkdir(self.out_path)
os.mkdir(self.global_explorer_out_path)
os.mkdir(self.bin_path)
# FIXME: remove this function, only expose ENV
# explicitly!
def __init_env(self):
"""Environment usable for other stuff"""
os.environ['__target_host'] = self.target_host
if self.debug:
os.environ['__debug'] = "yes"
def cleanup(self):
self.context.cleanup()
def run_initial_manifest(self):
"""Run the initial manifest"""
log.info("Running initial manifest %s", self.initial_manifest)
env = { "__manifest" : self.manifest_path }
self.run_manifest(self.initial_manifest, extra_env=env)
def run_type_manifest(self, cdist_object):
"""Run manifest for a specific object"""
cdist_type = cdist_object.type
manifest_path = os.path.join(self.type_base_path,
cdist_type.manifest_path)
log.debug("%s: Running %s", cdist_object.name, manifest_path)
if os.path.exists(manifest_path):
env = { "__object" : os.path.join(self.object_base_path,
cdist_object.path),
"__object_id": cdist_object.object_id,
"__object_fq": cdist_object.name,
"__type": os.path.join(self.type_base_path,
cdist_type.path)
}
self.run_manifest(manifest_path, extra_env=env)
def run_manifest(self, manifest_path, extra_env=None):
"""Run a manifest"""
log.debug("Running manifest %s, env=%s", manifest_path, extra_env)
env = os.environ.copy()
env['PATH'] = self.bin_path + ":" + env['PATH']
# Information required in every manifest
env['__target_host'] = self.target_host
env['__global'] = self.out_path
# Required for recording source in emulator
env['__cdist_manifest'] = manifest_path
# Required to find types in emulator
env['__cdist_type_base_path'] = self.type_base_path
# Other environment stuff
if extra_env:
env.update(extra_env)
cdist.exec.shell_run_or_debug_fail(manifest_path, [manifest_path], env=env)
def object_prepare(self, cdist_object):
"""Prepare object: Run type explorer + manifest"""
log.debug("Preparing object: " + cdist_object.name)
self.run_type_explorer(cdist_object)
self.run_type_manifest(cdist_object)
cdist_object.prepared = True
def object_run(self, cdist_object):
"""Run gencode and code for an object"""
log.debug("Running object %s", cdist_object)
# Catch requirements, which re-call us
if cdist_object.ran:
return
cdist_type = cdist_object.type
for requirement in cdist_object.requirements:
log.debug("Object %s requires %s", cdist_object, requirement)
self.object_run(requirement)
#
# Setup env Variable:
#
env = os.environ.copy()
env['__target_host'] = self.target_host
env['__global'] = self.out_path
env["__object"] = os.path.join(self.object_base_path, cdist_object.path)
env["__object_id"] = cdist_object.object_id
env["__object_fq"] = cdist_object.name
env["__type"] = cdist_type.name
# gencode
for cmd in ["local", "remote"]:
bin = os.path.join(self.type_base_path,
getattr(cdist_type, "gencode_" + cmd + "_path"))
if os.path.isfile(bin):
outfile = os.path.join(self.object_base_path,
getattr(cdist_object, "code_" + cmd + "_path"))
outfile_fd = open(outfile, "w")
# Need to flush to ensure our write is done before stdout write
# FIXME: code header still needed?
outfile_fd.write(CODE_HEADER)
outfile_fd.flush()
cdist.exec.shell_run_or_debug_fail(bin, [bin], env=env, stdout=outfile_fd)
outfile_fd.close()
status = os.stat(outfile)
# Remove output if empty, else make it executable
if status.st_size == len(CODE_HEADER):
os.unlink(outfile)
else:
# Add header and make executable - identically to 0o700
os.chmod(outfile, stat.S_IXUSR | stat.S_IRUSR | stat.S_IWUSR)
cdist_object.changed=True
# code local
code_local = cdist_object.code_local_path
if os.path.isfile(code_local):
cdist.exec.run_or_fail([code_local])
# code remote
local_remote_code = os.path.join(self.object_base_path,
cdist_object.code_remote_path)
remote_remote_code = os.path.join(self.remote_object_path,
cdist_object.code_remote_path)
if os.path.isfile(local_remote_code):
self.transfer_path(local_remote_code, remote_remote_code)
cdist.exec.run_or_fail([remote_remote_code], remote_prefix=True)
cdist_object.ran = True
def link_emulator(self):
"""Link emulator to types"""
src = os.path.abspath(self.exec_path)
for cdist_type in cdist.core.Type.list_types(self.type_base_path):
dst = os.path.join(self.bin_path, cdist_type.name)
log.debug("Linking emulator: %s to %s", src, dst)
# FIXME: handle exception / make it more beautiful / Steven: raise except :-)
os.symlink(src, dst)
def deploy_to(self):
"""Mimic the old deploy to: Deploy to one host"""
log.info("Deploying to " + self.target_host)
self.stage_prepare()
self.stage_run()
def deploy_and_cleanup(self):
"""Do what is most often done: deploy & cleanup"""
start_time = time.time()
self.deploy_to()
self.cleanup()
log.info("Finished run of %s in %s seconds",
self.target_host, time.time() - start_time)
def stage_prepare(self):
"""Do everything for a deploy, minus the actual code stage"""
self.link_emulator()
self.run_global_explorers()
self.run_initial_manifest()
log.info("Running object manifests and type explorers")
# Continue process until no new objects are created anymore
new_objects_created = True
while new_objects_created:
new_objects_created = False
for cdist_object in cdist.core.Object.list_objects(self.object_base_path,
self.type_base_path):
if cdist_object.prepared:
log.debug("Skipping rerun of object %s", cdist_object)
continue
else:
self.object_prepare(cdist_object)
new_objects_created = True
def stage_run(self):
"""The final (and real) step of deployment"""
log.info("Generating and executing code")
for cdist_object in cdist.core.Object.list_objects(self.object_base_path,
self.type_base_path):
log.debug("Run object: %s", cdist_object)
self.object_run(cdist_object)

118
lib/cdist/type_explorer.py
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#!/usr/bin/env python3
# -*- coding: utf-8 -*-
#
# 2010-2011 Nico Schottelius (nico-cdist at schottelius.org)
#
# This file is part of cdist.
#
# cdist is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# cdist is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with cdist. If not, see <http://www.gnu.org/licenses/>.
#
#
import io
import logging
import os
#import stat
#import shutil
#import sys
#import tempfile
#import time
#
#import cdist.exec
import cdist
# FIXME: Logging with hostname
log = logging.getLogger(__name__)
class TypeExplorer(object):
def __init__(self,
remote_global_explorer_path,
object_base_path,
type_base_path,
remote_object_base_path,
remote_type_base_path
):
self.object_base_path = object_base_path
self.global_explorer_path = global_explorer_path
self.type_base_path = type_base_path
self.remote_type_base_path = remote_type_base_path
self.remote_object_path = remote_object_path
def run(self, cdist_object):
"""Run type specific explorers for objects"""
cdist_type = cdist_object.type
cmd = []
cmd.append("__explorer=" + self.remote_global_explorer_path)
cmd.append("__type_explorer=" + os.path.join(
self.remote_type_path,
cdist_type.explorer_path))
cmd.append("__object=" + os.path.join(
self.remote_object_base_path,
cdist_object.path))
cmd.append("__object_id=" + cdist_object.object_id)
cmd.append("__object_fq=" + cdist_object.name)
outputs = {}
for explorer in cdist_type.explorers:
remote_cmd = cmd + [os.path.join(self.remote_type_path,
cdist_type.explorer_path, explorer)]
outputs[explorer] = io.StringIO()
log.debug("%s exploring %s using %s storing to %s",
cdist_object, explorer, remote_cmd, output)
# FIXME: change to new style
cdist.exec.run_or_fail(remote_cmd, stdout=outputs[explorer],
remote_prefix=True)
return outputs
def transfer_object_parameter(self, cdist_object):
"""Transfer the object parameter to the remote destination"""
src = os.path.join(self.object_base_path,
cdist_object.parameter_path)
dst = os.path.join(self.remote_object_base_path,
cdist_object.parameter_path)
# FIXME: new style
# Synchronise parameter dir afterwards
self.remote_mkdir(dst)
self.transfer_path(src, dst)
def transfer_type_explorers(self, cdist_type):
"""Transfer explorers of a type, but only once"""
if cdist_type.transferred_explorers:
log.debug("Skipping retransfer for explorers of %s", cdist_type)
return
else:
log.debug("Ensure no retransfer for %s", cdist_type)
# Do not retransfer
cdist_type.transferred_explorers = True
explorers = cdist_type.explorers
if len(explorers) > 0:
rel_path = cdist_type.explorer_path
src = os.path.join(self.type_base_path, rel_path)
dst = os.path.join(self.remote_type_path, rel_path)
# Ensure full path until type exists:
# /var/lib/cdist/conf/type/__directory/explorer
# /var/lib/cdist/conf/type/__directory may not exist,
# but remote_mkdir uses -p to fix this
self.remote_mkdir(dst)
self.transfer_path(src, dst)