forked from ungleich-public/cdist
432 lines
16 KiB
Python
432 lines
16 KiB
Python
#!/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
|
|
|
|
log = logging.getLogger(__name__)
|
|
|
|
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.target_host = target_host
|
|
|
|
self.debug = debug
|
|
|
|
# Required for testing
|
|
self.exec_path = exec_path
|
|
|
|
# Configure logging
|
|
log.addFilter(self)
|
|
|
|
# Base and Temp Base
|
|
if base_path:
|
|
self.base_path = base_path
|
|
else:
|
|
self.base_path = os.path.abspath(
|
|
os.path.join(os.path.dirname(__file__),
|
|
os.pardir,
|
|
os.pardir))
|
|
|
|
# Local input
|
|
self.cache_path = os.path.join(self.base_path, "cache",
|
|
self.target_host)
|
|
self.conf_path = os.path.join(self.base_path, "conf")
|
|
|
|
self.global_explorer_path = os.path.join(self.conf_path, "explorer")
|
|
self.manifest_path = os.path.join(self.conf_path, "manifest")
|
|
self.type_base_path = os.path.join(self.conf_path, "type")
|
|
self.lib_path = os.path.join(self.base_path, "lib")
|
|
|
|
if initial_manifest:
|
|
self.initial_manifest = initial_manifest
|
|
else:
|
|
self.initial_manifest = os.path.join(self.manifest_path, "init")
|
|
|
|
# Local output
|
|
if '__cdist_out_dir' in os.environ:
|
|
self.out_path = os.environ['__cdist_out_dir']
|
|
else:
|
|
self.out_path = os.path.join(tempfile.mkdtemp(), "out")
|
|
self.bin_path = os.path.join(self.out_path, "bin")
|
|
self.global_explorer_out_path = os.path.join(self.out_path, "explorer")
|
|
self.object_base_path = os.path.join(self.out_path, "object")
|
|
|
|
# Remote directory base
|
|
if '__cdist_remote_out_dir' in os.environ:
|
|
self.remote_base_path = os.environ['__cdist_remote_out_dir']
|
|
else:
|
|
self.remote_base_path = "/var/lib/cdist"
|
|
|
|
self.remote_conf_path = os.path.join(self.remote_base_path, "conf")
|
|
self.remote_object_path = os.path.join(self.remote_base_path, "object")
|
|
|
|
self.remote_type_path = os.path.join(self.remote_conf_path, "type")
|
|
self.remote_global_explorer_path = os.path.join(self.remote_conf_path, "explorer")
|
|
|
|
# Setup env to be used by others
|
|
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.remote_base_path)
|
|
self.remote_mkdir(self.remote_base_path)
|
|
self.remote_mkdir(self.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.base_path):
|
|
os.mkdir(self.base_path)
|
|
|
|
os.mkdir(self.out_path)
|
|
os.mkdir(self.global_explorer_out_path)
|
|
os.mkdir(self.bin_path)
|
|
|
|
def __init_env(self):
|
|
"""Environment usable for other stuff"""
|
|
os.environ['__target_host'] = self.target_host
|
|
|
|
def cleanup(self):
|
|
# Do not use in __del__:
|
|
# http://docs.python.org/reference/datamodel.html#customization
|
|
# "other globals referenced by the __del__() method may already have been deleted
|
|
# or in the process of being torn down (e.g. the import machinery shutting down)"
|
|
#
|
|
log.debug("Saving " + self.out_path + " to " + self.cache_path)
|
|
# Remove previous cache
|
|
if os.path.exists(self.cache_path):
|
|
shutil.rmtree(self.cache_path)
|
|
shutil.move(self.out_path, self.cache_path)
|
|
|
|
def filter(self, record):
|
|
"""Add hostname to logs via logging Filter"""
|
|
|
|
record.msg = self.target_host + ": " + record.msg
|
|
|
|
return True
|
|
|
|
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
|
|
|
|
# Submit debug flag to manifest, can be used by emulator and types
|
|
if self.debug:
|
|
env['__debug'] = "yes"
|
|
|
|
# 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_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
|
|
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 run_type_explorer(self, cdist_object):
|
|
"""Run type specific explorers for objects"""
|
|
|
|
cdist_type = cdist_object.type
|
|
self.transfer_type_explorers(cdist_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_path,
|
|
cdist_object.path))
|
|
cmd.append("__object_id=" + cdist_object.object_id)
|
|
cmd.append("__object_fq=" + cdist_object.name)
|
|
|
|
# Need to transfer at least the parameters for objects to be useful
|
|
self.transfer_object_parameter(cdist_object)
|
|
|
|
for explorer in cdist_type.explorers:
|
|
remote_cmd = cmd + [os.path.join(self.remote_type_path,
|
|
cdist_type.explorer_path, explorer)]
|
|
output = os.path.join(self.object_base_path,
|
|
cdist_object.explorer_path, explorer)
|
|
output_fd = open(output, mode='w')
|
|
log.debug("%s exploring %s using %s storing to %s",
|
|
cdist_object, explorer, remote_cmd, output)
|
|
|
|
cdist.exec.run_or_fail(remote_cmd, stdout=output_fd, remote_prefix=True)
|
|
output_fd.close()
|
|
|
|
|
|
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
|
|
os.symlink(src, dst)
|
|
|
|
def run_global_explorers(self):
|
|
"""Run global explorers"""
|
|
log.info("Running global explorers")
|
|
|
|
src_path = self.global_explorer_path
|
|
dst_path = self.global_explorer_out_path
|
|
remote_dst_path = self.remote_global_explorer_path
|
|
|
|
self.transfer_path(src_path, remote_dst_path)
|
|
|
|
for explorer in os.listdir(src_path):
|
|
output_fd = open(os.path.join(dst_path, explorer), mode='w')
|
|
cmd = []
|
|
cmd.append("__explorer=" + remote_dst_path)
|
|
cmd.append(os.path.join(remote_dst_path, explorer))
|
|
|
|
cdist.exec.run_or_fail(cmd, stdout=output_fd, remote_prefix=True)
|
|
output_fd.close()
|
|
|
|
|
|
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)
|
|
|
|
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:
|
|
log.debug("Preparing object: " + cdist_object.name)
|
|
self.run_type_explorer(cdist_object)
|
|
self.run_type_manifest(cdist_object)
|
|
cdist_object.prepared = True
|
|
new_objects_created = True
|
|
|
|
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_path,
|
|
cdist_object.parameter_path)
|
|
|
|
# Synchronise parameter dir afterwards
|
|
self.remote_mkdir(dst)
|
|
self.transfer_path(src, dst)
|
|
|
|
def transfer_global_explorers(self):
|
|
"""Transfer the global explorers"""
|
|
self.remote_mkdir(self.remote_global_explorer_path)
|
|
self.transfer_path(self.global_explorer_path,
|
|
self.remote_global_explorer_path)
|
|
|
|
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)
|
|
|
|
def remote_mkdir(self, directory):
|
|
"""Create directory on remote side"""
|
|
cdist.exec.run_or_fail(["mkdir", "-p", directory], remote_prefix=True)
|
|
|
|
def remove_remote_path(self, destination):
|
|
"""Ensure path on remote side vanished"""
|
|
cdist.exec.run_or_fail(["rm", "-rf", destination], remote_prefix=True)
|
|
|
|
def transfer_path(self, source, destination):
|
|
"""Transfer directory and previously delete the remote destination"""
|
|
self.remove_remote_path(destination)
|
|
cdist.exec.run_or_fail(os.environ['__remote_copy'].split() +
|
|
["-r", source, self.target_host + ":" + destination])
|