manifests.py 文件源码

def make_computer_manifest(given_serial):
    '''Checks for the presence and validity of an existing manifest for this client in the repository.
        Creates a new manifest if an existing one is not found or is invalid.'''
    # Filesystem path for this computer's manifest:
    computer_manifest_name = given_serial.upper() # if not already
    computer_manifest_path = os.path.join(munki_repo.COMPUTER_MANIFESTS_PATH,computer_manifest_name)
    # Control variable: should a new manifest be created?
    # Assume yes, unless an existing manifest is found and is valid.
    should_create_new_client_manifest = True

    # Catch missing computer manifests directory:
    if not os.path.exists(munki_repo.COMPUTER_MANIFESTS_PATH):
        common.logging_error("Computers manifests directory not found at %s." % munki_repo.COMPUTER_MANIFESTS_PATH)
        raise

    # Check existing manifest for this client:
    if os.path.exists(computer_manifest_path):
        common.logging_info("Manifest for %s already in repository. Checking it." % computer_manifest_name)
        try:
            computer_manifest_dict = plistlib.readPlist(computer_manifest_path)
            # Manifest already exists; do not overwrite if it's a valid dict!
            if computer_manifest_dict:
                should_create_new_client_manifest = False
                common.logging_info("Manifest for %s should be left alone." % computer_manifest_name)
        except xml.parsers.expat.ExpatError:
            common.logging_error("Manifest for %s is invalid. Will recreate." % computer_manifest_name)

    # Build a new client manifest if required:
    if should_create_new_client_manifest:
        common.logging_info("Creating new manifest for %s." % computer_manifest_name)
        computer_manifest_dict = {}
        computer_manifest_dict['managed_installs'] = []
        computer_manifest_dict['managed_uninstalls'] = []
        computer_manifest_dict['catalogs'] = munki_repo.CATALOG_ARRAY
        computer_manifest_dict['included_manifests'] = ['groups/%s' % munki_repo.DEFAULT_GROUP]
        try:
            plistlib.writePlist(computer_manifest_dict,computer_manifest_path)
        except TypeError:
            common.logging_error("Failed to write manifest for %s." % computer_manifest_name)