forked from ungleich-public/cdist
import whole cdist into path.py and strip down (most stuff is moved here anyway)
Signed-off-by: Nico Schottelius <nico@kr.ethz.ch>
This commit is contained in:
Nico Schottelius
parent
747517f067
commit
26772939ca
1 changed files with 665 additions and 0 deletions
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@ -1,3 +1,28 @@
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# Given paths from installation
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REMOTE_BASE_DIR = "/var/lib/cdist"
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REMOTE_CONF_DIR = os.path.join(REMOTE_BASE_DIR, "conf")
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REMOTE_OBJECT_DIR = os.path.join(REMOTE_BASE_DIR, "object")
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REMOTE_TYPE_DIR = os.path.join(REMOTE_CONF_DIR, "type")
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REMOTE_GLOBAL_EXPLORER_DIR = os.path.join(REMOTE_CONF_DIR, "explorer")
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CODE_HEADER = "#!/bin/sh -e\n"
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DOT_CDIST = ".cdist"
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TYPE_PREFIX = "__"
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def file_to_list(filename):
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"""Return list from \n seperated file"""
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if os.path.isfile(filename):
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file_fd = open(filename, "r")
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lines = file_fd.readlines()
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file_fd.close()
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# Remove \n from all lines
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lines = map(lambda s: s.strip(), lines)
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else:
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lines = []
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return lines
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class Path:
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"""Class that handles path related configurations"""
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@ -57,3 +82,643 @@ class Path:
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shutil.rmtree(self.cache_dir)
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shutil.move(self.temp_dir, self.cache_dir)
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def remote_mkdir(self, directory):
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"""Create directory on remote side"""
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self.run_or_fail(["mkdir", "-p", directory], remote=True)
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def remote_cat(filename):
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"""Use cat on the remote side for output"""
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self.run_or_fail(["cat", filename], remote=True)
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def shell_run_or_debug_fail(self, script, *args, **kargs):
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# Manually execute /bin/sh, because sh -e does what we want
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# and sh -c -e does not exit if /bin/false called
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args[0][:0] = [ "/bin/sh", "-e" ]
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remote = False
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if "remote" in kargs:
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if kargs["remote"]:
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args[0][:0] = self.remote_prefix
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remote = true
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del kargs["remote"]
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log.debug("Shell exec cmd: %s", args)
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log.debug("Shell exec env: %s", kargs['env'])
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try:
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subprocess.check_call(*args, **kargs)
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except subprocess.CalledProcessError:
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log.error("Code that raised the error:\n")
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if remote:
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remote_cat(script)
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else:
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script_fd = open(script)
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print(script_fd.read())
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script_fd.close()
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exit_error("Command failed (shell): " + " ".join(*args))
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except OSError as error:
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exit_error(" ".join(*args) + ": " + error.args[1])
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def run_or_fail(self, *args, **kargs):
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if "remote" in kargs:
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if kargs["remote"]:
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args[0][:0] = self.remote_prefix
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del kargs["remote"]
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log.debug("Exec: " + " ".join(*args))
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try:
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subprocess.check_call(*args, **kargs)
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except subprocess.CalledProcessError:
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exit_error("Command failed: " + " ".join(*args))
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except OSError as error:
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exit_error(" ".join(*args) + ": " + error.args[1])
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def remove_remote_dir(self, destination):
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self.run_or_fail(["rm", "-rf", destination], remote=True)
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def transfer_dir(self, source, destination):
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"""Transfer directory and previously delete the remote destination"""
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self.remove_remote_dir(destination)
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self.run_or_fail(["scp", "-qr", source,
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self.remote_user + "@" +
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self.target_host + ":" +
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destination])
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def transfer_file(self, source, destination):
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"""Transfer file"""
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self.run_or_fail(["scp", "-q", source,
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self.remote_user + "@" +
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self.target_host + ":" +
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destination])
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def global_explorer_output_path(self, explorer):
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"""Returns path of the output for a global explorer"""
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return os.path.join(self.global_explorer_out_dir, explorer)
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def type_explorer_output_dir(self, cdist_object):
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"""Returns and creates dir of the output for a type explorer"""
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dir = os.path.join(self.object_dir(cdist_object), "explorer")
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if not os.path.isdir(dir):
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os.mkdir(dir)
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return dir
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def remote_global_explorer_path(self, explorer):
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"""Returns path to the remote explorer"""
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return os.path.join(REMOTE_GLOBAL_EXPLORER_DIR, explorer)
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def list_global_explorers(self):
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"""Return list of available explorers"""
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return os.listdir(self.global_explorer_dir)
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def list_type_explorers(self, type):
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"""Return list of available explorers for a specific type"""
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dir = self.type_dir(type, "explorer")
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if os.path.isdir(dir):
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list = os.listdir(dir)
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else:
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list = []
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log.debug("Explorers for %s in %s: %s", type, dir, list)
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return list
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def list_types(self):
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return os.listdir(self.type_base_dir)
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def list_object_paths(self, starting_point):
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"""Return list of paths of existing objects"""
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object_paths = []
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for content in os.listdir(starting_point):
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full_path = os.path.join(starting_point, content)
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if os.path.isdir(full_path):
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object_paths.extend(self.list_object_paths(starting_point = full_path))
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# Directory contains .cdist -> is an object
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if content == DOT_CDIST:
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object_paths.append(starting_point)
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return object_paths
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def get_type_from_object(self, cdist_object):
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"""Returns the first part (i.e. type) of an object"""
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return cdist_object.split(os.sep)[0]
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def get_object_id_from_object(self, cdist_object):
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"""Returns everything but the first part (i.e. object_id) of an object"""
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return os.sep.join(cdist_object.split(os.sep)[1:])
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def object_dir(self, cdist_object):
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"""Returns the full path to the object (including .cdist)"""
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return os.path.join(self.object_base_dir, cdist_object, DOT_CDIST)
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def remote_object_dir(self, cdist_object):
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"""Returns the remote full path to the object (including .cdist)"""
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return os.path.join(REMOTE_OBJECT_DIR, cdist_object, DOT_CDIST)
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def object_parameter_dir(self, cdist_object):
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"""Returns the dir to the object parameter"""
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return os.path.join(self.object_dir(cdist_object), "parameter")
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def remote_object_parameter_dir(self, cdist_object):
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"""Returns the remote dir to the object parameter"""
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return os.path.join(self.remote_object_dir(cdist_object), "parameter")
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def object_code_paths(self, cdist_object):
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"""Return paths to code scripts of object"""
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return [os.path.join(self.object_dir(cdist_object), "code-local"),
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os.path.join(self.object_dir(cdist_object), "code-remote")]
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def list_objects(self):
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"""Return list of existing objects"""
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objects = []
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if os.path.isdir(self.object_base_dir):
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object_paths = self.list_object_paths(self.object_base_dir)
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for path in object_paths:
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objects.append(os.path.relpath(path, self.object_base_dir))
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return objects
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def type_dir(self, type, *args):
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"""Return directory the type"""
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return os.path.join(self.type_base_dir, type, *args)
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def remote_type_explorer_dir(self, type):
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"""Return remote directory that holds the explorers of a type"""
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return os.path.join(REMOTE_TYPE_DIR, type, "explorer")
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def transfer_object_parameter(self, cdist_object):
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"""Transfer the object parameter to the remote destination"""
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# Create base path before using mkdir -p
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self.remote_mkdir(self.remote_object_parameter_dir(cdist_object))
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# Synchronise parameter dir afterwards
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self.transfer_dir(self.object_parameter_dir(cdist_object),
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self.remote_object_parameter_dir(cdist_object))
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def transfer_global_explorers(self):
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"""Transfer the global explorers"""
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self.remote_mkdir(REMOTE_GLOBAL_EXPLORER_DIR)
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self.transfer_dir(self.global_explorer_dir, REMOTE_GLOBAL_EXPLORER_DIR)
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def transfer_type_explorers(self, type):
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"""Transfer explorers of a type, but only once"""
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if type in self.type_explorers_transferred:
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log.debug("Skipping retransfer for explorers of %s", type)
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return
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else:
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# Do not retransfer
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self.type_explorers_transferred[type] = 1
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src = self.type_dir(type, "explorer")
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remote_base = os.path.join(REMOTE_TYPE_DIR, type)
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dst = self.remote_type_explorer_dir(type)
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# Only continue, if there is at least the directory
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if os.path.isdir(src):
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# Ensure that the path exists
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self.remote_mkdir(remote_base)
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self.transfer_dir(src, dst)
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def link_type_to_emulator(self):
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"""Link type names to cdist-type-emulator"""
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source = os.path.abspath(sys.argv[0])
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for type in self.list_types():
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destination = os.path.join(self.bin_dir, type)
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log.debug("Linking %s to %s", source, destination)
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os.symlink(source, destination)
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def run_global_explores(self):
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"""Run global explorers"""
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explorers = self.list_global_explorers()
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if(len(explorers) == 0):
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exit_error("No explorers found in", self.global_explorer_dir)
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self.transfer_global_explorers()
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for explorer in explorers:
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output = self.global_explorer_output_path(explorer)
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output_fd = open(output, mode='w')
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cmd = []
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cmd.append("__explorer=" + REMOTE_GLOBAL_EXPLORER_DIR)
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cmd.append(self.remote_global_explorer_path(explorer))
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self.run_or_fail(cmd, stdout=output_fd, remote=True)
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output_fd.close()
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def run_type_explorer(self, cdist_object):
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"""Run type specific explorers for objects"""
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# Based on bin/cdist-object-explorer-run
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# Transfering explorers for this type
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type = self.get_type_from_object(cdist_object)
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self.transfer_type_explorers(type)
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cmd = []
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cmd.append("__explorer=" + REMOTE_GLOBAL_EXPLORER_DIR)
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cmd.append("__type_explorer=" + self.remote_type_explorer_dir(type))
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cmd.append("__object=" + self.remote_object_dir(cdist_object))
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cmd.append("__object_id=" + self.get_object_id_from_object(cdist_object))
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cmd.append("__object_fq=" + cdist_object)
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# Need to transfer at least the parameters for objects to be useful
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self.transfer_object_parameter(cdist_object)
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explorers = self.list_type_explorers(type)
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for explorer in explorers:
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remote_cmd = cmd + [os.path.join(self.remote_type_explorer_dir(type), explorer)]
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output = os.path.join(self.type_explorer_output_dir(cdist_object), explorer)
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output_fd = open(output, mode='w')
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log.debug("%s exploring %s using %s storing to %s",
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cdist_object, explorer, remote_cmd, output)
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self.run_or_fail(remote_cmd, stdout=output_fd, remote=True)
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output_fd.close()
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def init_deploy(self):
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"""Ensure the base directories are cleaned up"""
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log.debug("Creating clean directory structure")
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self.remove_remote_dir(REMOTE_BASE_DIR)
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self.remote_mkdir(REMOTE_BASE_DIR)
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def run_initial_manifest(self):
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"""Run the initial manifest"""
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env = { "__manifest" : self.manifest_dir }
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self.run_manifest(self.initial_manifest, extra_env=env)
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def run_type_manifest(self, cdist_object):
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"""Run manifest for a specific object"""
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type = self.get_type_from_object(cdist_object)
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manifest = self.type_dir(type, "manifest")
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log.debug("%s: Running %s", cdist_object, manifest)
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if os.path.exists(manifest):
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env = { "__object" : self.object_dir(cdist_object),
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"__object_id": self.get_object_id_from_object(cdist_object),
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"__object_fq": cdist_object,
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"__type": self.type_dir(type)
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}
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self.run_manifest(manifest, extra_env=env)
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def run_manifest(self, manifest, extra_env=None):
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"""Run a manifest"""
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log.debug("Running manifest %s, env=%s", manifest, extra_env)
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env = os.environ.copy()
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env['PATH'] = self.bin_dir + ":" + env['PATH']
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# Information required in every manifest
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env['__target_host'] = self.target_host
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env['__global'] = self.out_dir
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# Legacy stuff to make cdist-type-emulator work
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env['__cdist_core_dir'] = os.path.join(self.base_dir, "core")
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env['__cdist_local_base_dir'] = self.temp_dir
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# Submit information to new type emulator
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env['__cdist_manifest'] = manifest
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env['__cdist_type_base_dir'] = self.type_base_dir
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# Other environment stuff
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if extra_env:
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env.update(extra_env)
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self.shell_run_or_debug_fail(manifest, [manifest], env=env)
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def object_run(self, cdist_object, mode):
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"""Run gencode or code for an object"""
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log.debug("Running %s from %s", mode, cdist_object)
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file=os.path.join(self.object_dir(cdist_object), "require")
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requirements = file_to_list(file)
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type = self.get_type_from_object(cdist_object)
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for requirement in requirements:
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log.debug("Object %s requires %s", cdist_object, requirement)
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self.object_run(requirement, mode=mode)
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#
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# Setup env Variable:
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#
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env = os.environ.copy()
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env['__target_host'] = self.target_host
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env['__global'] = self.out_dir
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env["__object"] = self.object_dir(cdist_object)
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env["__object_id"] = self.get_object_id_from_object(cdist_object)
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env["__object_fq"] = cdist_object
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env["__type"] = self.type_dir(type)
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if mode == "gencode":
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paths = [
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self.type_dir(type, "gencode-local"),
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self.type_dir(type, "gencode-remote")
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]
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for bin in paths:
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if os.path.isfile(bin):
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# omit "gen" from gencode and use it for output base
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outfile=os.path.join(self.object_dir(cdist_object),
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os.path.basename(bin)[3:])
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outfile_fd = open(outfile, "w")
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# Need to flush to ensure our write is done before stdout write
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outfile_fd.write(CODE_HEADER)
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outfile_fd.flush()
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self.shell_run_or_debug_fail(bin, [bin], env=env, stdout=outfile_fd)
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outfile_fd.close()
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status = os.stat(outfile)
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# Remove output if empty, else make it executable
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if status.st_size == len(CODE_HEADER):
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os.unlink(outfile)
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else:
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# Add header and make executable - identically to 0o700
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os.chmod(outfile, stat.S_IXUSR | stat.S_IRUSR | stat.S_IWUSR)
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# Mark object as changed
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open(os.path.join(self.object_dir(cdist_object), "changed"), "w").close()
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if mode == "code":
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local_dir = self.object_dir(cdist_object)
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remote_dir = self.remote_object_dir(cdist_object)
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bin = os.path.join(local_dir, "code-local")
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if os.path.isfile(bin):
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self.run_or_fail([bin], remote=False)
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local_remote_code = os.path.join(local_dir, "code-remote")
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remote_remote_code = os.path.join(remote_dir, "code-remote")
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if os.path.isfile(local_remote_code):
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self.transfer_file(local_remote_code, remote_remote_code)
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self.run_or_fail([remote_remote_code], remote=True)
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def stage_prepare(self):
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"""Do everything for a deploy, minus the actual code stage"""
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self.init_deploy()
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self.run_global_explores()
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self.run_initial_manifest()
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old_objects = []
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objects = self.list_objects()
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# Continue process until no new objects are created anymore
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while old_objects != objects:
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log.debug("Prepare stage")
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old_objects = list(objects)
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for cdist_object in objects:
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if cdist_object in self.objects_prepared:
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log.debug("Skipping rerun of object %s", cdist_object)
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continue
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else:
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self.run_type_explorer(cdist_object)
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self.run_type_manifest(cdist_object)
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self.objects_prepared.append(cdist_object)
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objects = self.list_objects()
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def stage_run(self):
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"""The final (and real) step of deployment"""
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log.debug("Actual run objects")
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# Now do the final steps over the existing objects
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for cdist_object in self.list_objects():
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log.debug("Run object: %s", cdist_object)
|
||||
self.object_run(cdist_object, mode="gencode")
|
||||
self.object_run(cdist_object, mode="code")
|
||||
|
||||
def deploy_to(self):
|
||||
"""Mimic the old deploy to: Deploy to one host"""
|
||||
log.info("Deploying to " + self.target_host)
|
||||
time_start = datetime.datetime.now()
|
||||
|
||||
self.stage_prepare()
|
||||
self.stage_run()
|
||||
|
||||
time_end = datetime.datetime.now()
|
||||
duration = time_end - time_start
|
||||
log.info("Finished run of %s in %s seconds",
|
||||
self.target_host,
|
||||
duration.total_seconds())
|
||||
|
||||
def deploy_and_cleanup(self):
|
||||
"""Do what is most often done: deploy & cleanup"""
|
||||
self.deploy_to()
|
||||
self.cleanup()
|
||||
|
||||
def banner(args):
|
||||
"""Guess what :-)"""
|
||||
print(BANNER)
|
||||
sys.exit(0)
|
||||
|
||||
def config(args):
|
||||
"""Configure remote system"""
|
||||
process = {}
|
||||
|
||||
time_start = datetime.datetime.now()
|
||||
|
||||
for host in args.host:
|
||||
c = Cdist(host, initial_manifest=args.manifest, home=args.cdist_home, debug=args.debug)
|
||||
if args.parallel:
|
||||
log.debug("Creating child process for %s", host)
|
||||
process[host] = multiprocessing.Process(target=c.deploy_and_cleanup)
|
||||
process[host].start()
|
||||
else:
|
||||
c.deploy_and_cleanup()
|
||||
|
||||
if args.parallel:
|
||||
for p in process.keys():
|
||||
log.debug("Joining %s", p)
|
||||
process[p].join()
|
||||
|
||||
time_end = datetime.datetime.now()
|
||||
log.info("Total processing time for %s host(s): %s", len(args.host),
|
||||
(time_end - time_start).total_seconds())
|
||||
|
||||
def install(args):
|
||||
"""Install remote system"""
|
||||
process = {}
|
||||
|
||||
def emulator():
|
||||
"""Emulate type commands (i.e. __file and co)"""
|
||||
type = os.path.basename(sys.argv[0])
|
||||
type_dir = os.path.join(os.environ['__cdist_type_base_dir'], type)
|
||||
param_dir = os.path.join(type_dir, "parameter")
|
||||
global_dir = os.environ['__global']
|
||||
object_source = os.environ['__cdist_manifest']
|
||||
|
||||
parser = argparse.ArgumentParser(add_help=False)
|
||||
|
||||
# Setup optional parameters
|
||||
for parameter in file_to_list(os.path.join(param_dir, "optional")):
|
||||
argument = "--" + parameter
|
||||
parser.add_argument(argument, action='store', required=False)
|
||||
|
||||
# Setup required parameters
|
||||
for parameter in file_to_list(os.path.join(param_dir, "required")):
|
||||
argument = "--" + parameter
|
||||
parser.add_argument(argument, action='store', required=True)
|
||||
|
||||
# Setup positional parameter, if not singleton
|
||||
|
||||
if not os.path.isfile(os.path.join(type_dir, "singleton")):
|
||||
parser.add_argument("object_id", nargs=1)
|
||||
|
||||
# And finally verify parameter
|
||||
args = parser.parse_args(sys.argv[1:])
|
||||
|
||||
# Setup object_id
|
||||
if os.path.isfile(os.path.join(type_dir, "singleton")):
|
||||
object_id = "singleton"
|
||||
else:
|
||||
object_id = args.object_id[0]
|
||||
del args.object_id
|
||||
|
||||
# FIXME: / hardcoded - better portable solution available?
|
||||
if object_id[0] == '/':
|
||||
object_id = object_id[1:]
|
||||
|
||||
# FIXME: verify object id
|
||||
log.debug(args)
|
||||
|
||||
object_dir = os.path.join(global_dir, "object", type,
|
||||
object_id, DOT_CDIST)
|
||||
param_out_dir = os.path.join(object_dir, "parameter")
|
||||
|
||||
object_source_file = os.path.join(object_dir, "source")
|
||||
|
||||
if os.path.exists(param_out_dir):
|
||||
object_exists = True
|
||||
old_object_source_fd = open(object_source_file, "r")
|
||||
old_object_source = old_object_source_fd.readlines()
|
||||
old_object_source_fd.close()
|
||||
|
||||
else:
|
||||
object_exists = False
|
||||
try:
|
||||
os.makedirs(param_out_dir, exist_ok=True)
|
||||
except OSError as error:
|
||||
exit_error(param_out_dir + ": " + error.args[1])
|
||||
|
||||
# Record parameter
|
||||
params = vars(args)
|
||||
for param in params:
|
||||
value = getattr(args, param)
|
||||
if value:
|
||||
file = os.path.join(param_out_dir, param)
|
||||
log.debug(file + "<-" + param + " = " + value)
|
||||
|
||||
# Already exists, verify all parameter are the same
|
||||
if object_exists:
|
||||
if not os.path.isfile(file):
|
||||
print("New parameter + " + param + "specified, aborting")
|
||||
print("Source = " + old_object_source + "new =" + object_source)
|
||||
sys.exit(1)
|
||||
else:
|
||||
param_fd = open(file, "r")
|
||||
param_old = param_fd.readlines()
|
||||
param_fd.close()
|
||||
|
||||
if(param_old != param):
|
||||
print("Parameter " + param + " differs: " + " ".join(param_old) + " vs. " + param)
|
||||
print("Sources: " + " ".join(old_object_source) + " and " + object_source)
|
||||
sys.exit(1)
|
||||
else:
|
||||
param_fd = open(file, "w")
|
||||
param_fd.writelines(value)
|
||||
param_fd.close()
|
||||
|
||||
# Record requirements
|
||||
if "__require" in os.environ:
|
||||
requirements = os.environ['__require']
|
||||
print(object_id + ":Writing requirements: " + requirements)
|
||||
require_fd = open(os.path.join(object_dir, "require"), "a")
|
||||
require_fd.writelines(requirements.split(" "))
|
||||
require_fd.close()
|
||||
|
||||
# Record / Append source
|
||||
source_fd = open(os.path.join(object_dir, "source"), "a")
|
||||
source_fd.writelines(object_source)
|
||||
source_fd.close()
|
||||
|
||||
# sys.exit(1)
|
||||
print("Finished " + type + "/" + object_id + repr(params))
|
||||
|
||||
|
||||
def commandline():
|
||||
"""Parse command line"""
|
||||
# Construct parser others can reuse
|
||||
parser = {}
|
||||
# Options _all_ parsers have in common
|
||||
parser['most'] = argparse.ArgumentParser(add_help=False)
|
||||
parser['most'].add_argument('-d', '--debug',
|
||||
help='Set log level to debug', action='store_true')
|
||||
|
||||
# Main subcommand parser
|
||||
parser['main'] = argparse.ArgumentParser(description='cdist ' + VERSION)
|
||||
parser['main'].add_argument('-V', '--version',
|
||||
help='Show version', action='version',
|
||||
version='%(prog)s ' + VERSION)
|
||||
parser['sub'] = parser['main'].add_subparsers(title="Commands")
|
||||
|
||||
# Banner
|
||||
parser['banner'] = parser['sub'].add_parser('banner',
|
||||
add_help=False)
|
||||
parser['banner'].set_defaults(func=banner)
|
||||
|
||||
# Config and install (common stuff)
|
||||
parser['configinstall'] = argparse.ArgumentParser(add_help=False)
|
||||
parser['configinstall'].add_argument('host', nargs='+',
|
||||
help='one or more hosts to operate on')
|
||||
parser['configinstall'].add_argument('-c', '--cdist-home',
|
||||
help='Change cdist home (default: .. from bin directory)',
|
||||
action='store')
|
||||
parser['configinstall'].add_argument('-i', '--initial-manifest',
|
||||
help='Path to a cdist manifest',
|
||||
dest='manifest', required=False)
|
||||
parser['configinstall'].add_argument('-p', '--parallel',
|
||||
help='Operate on multiple hosts in parallel',
|
||||
action='store_true', dest='parallel')
|
||||
parser['configinstall'].add_argument('-s', '--sequential',
|
||||
help='Operate on multiple hosts sequentially (default)',
|
||||
action='store_false', dest='parallel')
|
||||
|
||||
# Config
|
||||
parser['config'] = parser['sub'].add_parser('config',
|
||||
parents=[parser['most'], parser['configinstall']])
|
||||
parser['config'].set_defaults(func=config)
|
||||
|
||||
# Install
|
||||
parser['install'] = parser['sub'].add_parser('install',
|
||||
parents=[parser['most'], parser['configinstall']])
|
||||
parser['install'].set_defaults(func=install)
|
||||
|
||||
for p in parser:
|
||||
parser[p].epilog = "Get cdist at http://www.nico.schottelius.org/software/cdist/"
|
||||
|
||||
args = parser['main'].parse_args(sys.argv[1:])
|
||||
|
||||
# Most subcommands have --debug, so handle it here
|
||||
if 'debug' in args:
|
||||
if args.debug:
|
||||
logging.root.setLevel(logging.DEBUG)
|
||||
log.debug(args)
|
||||
|
||||
args.func(args)
|
||||
|
||||
if __name__ == "__main__":
|
||||
try:
|
||||
if re.match(TYPE_PREFIX, os.path.basename(sys.argv[0])):
|
||||
emulator()
|
||||
else:
|
||||
commandline()
|
||||
except KeyboardInterrupt:
|
||||
sys.exit(0)
|
||||
|
|
|
|||
Loading…
Reference in a new issue