a73c2281e6
The scripts in tools should be updated to use python3 by default. Support for python2 has been dropped. Closes-Bug: #1875685 Change-Id: Ia13a8a43d767d93263d5c717f273184bf78d23c9
367 lines
16 KiB
Python
Executable File
367 lines
16 KiB
Python
Executable File
#!/usr/bin/env python3
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import argparse
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import jinja2
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import os
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import shutil
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import six
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import sys
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import yaml
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__tht_root_dir = os.path.dirname(os.path.dirname(__file__))
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def _shutil_copy_if_not_same(src, dst):
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"""Copy with shutil ignoring the same file errors."""
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if hasattr(shutil, 'SameFileError'):
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try:
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shutil.copy(src, dst)
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except shutil.SameFileError:
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pass
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else:
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try:
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shutil.copy(src, dst)
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except Exception as ex:
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if 'are the same file' in six.text_type(ex):
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pass
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else:
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raise
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def parse_opts(argv):
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parser = argparse.ArgumentParser(
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description='Configure host network interfaces using a JSON'
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' config file format.')
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parser.add_argument('-p', '--base_path', metavar='BASE_PATH',
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help="""base path of templates to process.""",
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default='.')
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parser.add_argument('-r', '--roles-data', metavar='ROLES_DATA',
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help="""relative path to the roles_data.yaml file.""",
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default='roles_data.yaml')
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parser.add_argument('-n', '--network-data', metavar='NETWORK_DATA',
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help=("""relative path to the network_data.yaml """
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"""file."""),
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default='network_data.yaml')
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parser.add_argument('--safe',
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action='store_true',
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help="""Enable safe mode (do not overwrite files).""",
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default=False)
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parser.add_argument('-o', '--output-dir', metavar='OUTPUT_DIR',
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help="""Output dir for all the templates""",
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default='')
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parser.add_argument('-c', '--clean',
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action='store_true',
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help=("""clean the templates dir by deleting """
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"""generated templates"""))
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parser.add_argument('-d', '--dry-run',
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action='store_true',
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help=("""only output file names normally generated """
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"""from j2 templates"""))
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opts = parser.parse_args(argv[1:])
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return opts
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def _j2_render_to_file(j2_template, j2_data, outfile_name=None,
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overwrite=True, dry_run=False):
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yaml_f = outfile_name or j2_template.replace('.j2.yaml', '.yaml')
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if dry_run:
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amend = 'dry run processing'
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else:
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amend = 'rendering'
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print('%s j2 template to file: %s' % (amend, outfile_name))
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if not overwrite and os.path.exists(outfile_name):
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print('ERROR: path already exists for file: %s' % outfile_name)
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sys.exit(1)
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# Search for templates relative to the current template path first
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template_base = os.path.dirname(yaml_f)
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j2_loader = \
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jinja2.loaders.FileSystemLoader([template_base, __tht_root_dir])
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try:
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# Render the j2 template
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template = jinja2.Environment(loader=j2_loader).from_string(
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j2_template)
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r_template = template.render(**j2_data)
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except jinja2.exceptions.TemplateError as ex:
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error_msg = ("Error rendering template %s : %s"
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% (yaml_f, six.text_type(ex)))
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print(error_msg)
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raise Exception(error_msg)
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if not dry_run:
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with open(outfile_name, 'w') as out_f:
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out_f.write(r_template)
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def process_templates(template_path, role_data_path, output_dir,
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network_data_path, overwrite, dry_run):
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with open(role_data_path) as role_data_file:
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role_data = yaml.safe_load(role_data_file)
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with open(network_data_path) as network_data_file:
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network_data = yaml.safe_load(network_data_file)
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if network_data is None:
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network_data = []
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j2_excludes = {}
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j2_excludes_path = os.path.join(template_path, 'j2_excludes.yaml')
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if os.path.exists(j2_excludes_path):
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with open(j2_excludes_path) as role_data_file:
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j2_excludes = yaml.safe_load(role_data_file)
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if output_dir and not os.path.isdir(output_dir):
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if os.path.exists(output_dir):
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raise RuntimeError('Output dir %s is not a directory' % output_dir)
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os.mkdir(output_dir)
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role_names = [r.get('name') for r in role_data]
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r_map = {}
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for r in role_data:
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r_map[r.get('name')] = r
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n_map = {}
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for n in network_data:
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if (n.get('enabled') is not False):
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n_map[n.get('name')] = n
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if not n.get('name_lower'):
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n_map[n.get('name')]['name_lower'] = n.get('name').lower()
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else:
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print("skipping %s network: network is disabled" % n.get('name'))
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excl_templates = ['%s/%s' % (template_path, e)
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for e in j2_excludes.get('name', [])]
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if os.path.isdir(template_path):
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for subdir, dirs, files in os.walk(template_path):
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# NOTE(flaper87): Ignore hidden dirs as we don't
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# generate templates for those.
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# Note the slice assignment for `dirs` is necessary
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# because we need to modify the *elements* in the
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# dirs list rather than the reference to the list.
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# This way we'll make sure os.walk will iterate over
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# the shrunk list. os.walk doesn't have an API for
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# filtering dirs at this point.
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dirs[:] = [d for d in dirs if not d[0] == '.']
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files = [f for f in files if not f[0] == '.']
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# NOTE(flaper87): We could have used shutil.copytree
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# but it requires the dst dir to not be present. This
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# approach is safer as it doesn't require us to delete
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# the output_dir in advance and it allows for running
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# the command multiple times with the same output_dir.
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out_dir = subdir
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if output_dir:
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if template_path != '.':
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# strip out base path if not default
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temp = out_dir.split(template_path)[1]
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out_dir = temp[1:] if temp.startswith('/') else temp
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out_dir = os.path.join(output_dir, out_dir)
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if not os.path.exists(out_dir):
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os.mkdir(out_dir)
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# Ensure template is on its expected search path
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# for upcoming parsing and rendering
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for f in files:
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if f.endswith('.j2') and output_dir:
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_shutil_copy_if_not_same(os.path.join(subdir, f), out_dir)
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for f in files:
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file_path = os.path.join(subdir, f)
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# We do three templating passes here:
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# 1. *.role.j2.yaml - we template just the role name
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# and create multiple files (one per role)
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# 2 *.network.j2.yaml - we template the network name and
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# data and create multiple files for networks and
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# network ports (one per network)
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# 3. *.j2.yaml - we template with all roles_data,
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# and create one file common to all roles
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if f.endswith('.role.j2.yaml'):
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print("jinja2 rendering role template %s" % f)
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with open(file_path) as j2_template:
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template_data = j2_template.read()
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print("jinja2 rendering roles %s" % ","
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.join(role_names))
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for role in role_names:
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j2_data = {'role': r_map[role]}
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out_f = "-".join(
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[role.lower(),
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os.path.basename(f).replace('.role.j2.yaml',
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'.yaml')])
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out_f_path = os.path.join(out_dir, out_f)
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if ('network/config' in file_path and
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r_map[role].get('deprecated_nic_config_name')):
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d_name = r_map[role].get(
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'deprecated_nic_config_name')
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out_f_path = os.path.join(out_dir, d_name)
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elif ('network/config' in file_path):
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d_name = "%s.yaml" % role.lower()
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out_f_path = os.path.join(out_dir, d_name)
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if not (out_f_path in excl_templates):
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if '{{role.name}}' in template_data:
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j2_data = {'role': r_map[role],
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'networks': network_data}
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_j2_render_to_file(template_data, j2_data,
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out_f_path, overwrite,
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dry_run)
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else:
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# Backwards compatibility with templates
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# that specify {{role}} vs {{role.name}}
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j2_data = {'role': role,
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'networks': network_data}
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_j2_render_to_file(
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template_data, j2_data,
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out_f_path, overwrite, dry_run)
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else:
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print('skipping rendering of %s' % out_f_path)
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elif f.endswith('.network.j2.yaml'):
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print("jinja2 rendering network template %s" % f)
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with open(file_path) as j2_template:
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template_data = j2_template.read()
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print("jinja2 rendering networks %s" % ",".join(n_map))
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for network in n_map:
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j2_data = {'network': n_map[network]}
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# Output file names in "<name>.yaml" format
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out_f = os.path.basename(f).replace('.network.j2.yaml',
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'.yaml')
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if os.path.dirname(file_path).endswith('ports'):
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out_f = out_f.replace('port',
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n_map[network]['name_lower'])
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else:
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out_f = out_f.replace('network',
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n_map[network]['name_lower'])
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out_f_path = os.path.join(out_dir, out_f)
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if not (out_f_path in excl_templates):
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_j2_render_to_file(template_data, j2_data,
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out_f_path, overwrite, dry_run)
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else:
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print('skipping rendering of %s' % out_f_path)
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elif f.endswith('.j2.yaml'):
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print("jinja2 rendering normal template %s" % f)
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with open(file_path) as j2_template:
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template_data = j2_template.read()
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j2_data = {'roles': role_data,
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'networks': network_data}
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out_f = os.path.basename(f).replace('.j2.yaml',
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'.yaml')
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out_f_path = os.path.join(out_dir, out_f)
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_j2_render_to_file(template_data, j2_data, out_f_path,
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overwrite, dry_run)
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elif output_dir:
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_shutil_copy_if_not_same(os.path.join(subdir, f), out_dir)
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else:
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print('Unexpected argument %s' % template_path)
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def clean_templates(base_path, role_data_path, network_data_path):
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def delete(f):
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if os.path.exists(f):
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print("Deleting %s" % f)
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os.unlink(f)
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for root, dirs, files in os.walk(base_path):
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for f in files:
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if f.endswith('.j2.yaml'):
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rendered_path = os.path.join(
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root, '%s.yaml' % f.split('.j2.yaml')[0])
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delete(rendered_path)
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with open(network_data_path) as network_data_file:
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network_data = yaml.safe_load(network_data_file)
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for network in network_data:
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network_path = os.path.join(
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'network', '%s.yaml' % network['name_lower'])
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network_from_pool_path = os.path.join(
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'network', '%s_from_pool.yaml' % network['name_lower'])
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network_v6_path = os.path.join(
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'network', '%s_v6.yaml' % network['name_lower'])
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network_from_pool_v6_path = os.path.join(
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'network', '%s_from_pool_v6.yaml' % network['name_lower'])
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ports_path = os.path.join(
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'network', 'ports', '%s.yaml' % network['name_lower'])
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external_resource_ports_path = os.path.join(
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'network', 'ports',
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'external_resource_%s.yaml' % network['name_lower'])
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external_resource_ports_v6_path = os.path.join(
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'network', 'ports',
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'external_resource_%s_v6.yaml' % network['name_lower'])
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ports_from_pool_path = os.path.join(
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'network', 'ports', '%s_from_pool.yaml' % network['name_lower'])
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ports_v6_path = os.path.join(
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'network', 'ports', '%s_v6.yaml' % network['name_lower'])
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ports_from_pool_v6_path = os.path.join(
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'network', 'ports', '%s_from_pool_v6.yaml' % network['name_lower'])
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delete(network_path)
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delete(network_from_pool_path)
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delete(network_v6_path)
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delete(network_from_pool_v6_path)
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delete(ports_path)
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delete(external_resource_ports_path)
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delete(external_resource_ports_v6_path)
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delete(ports_from_pool_path)
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delete(ports_v6_path)
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delete(ports_from_pool_v6_path)
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with open(role_data_path) as role_data_file:
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role_data = yaml.safe_load(role_data_file)
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for role in role_data:
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role_path = os.path.join(
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'puppet', '%s-role.yaml' % role['name'].lower())
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host_config_and_reboot_path = os.path.join(
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'extraconfig', 'pre_network',
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'%s-host_config_and_reboot.yaml' % role['name'].lower())
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krb_service_principals_path = os.path.join(
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'extraconfig', 'nova_metadata', 'krb-service-principals',
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'%s-role.yaml' % role['name'].lower())
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common_services_path = os.path.join(
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'common', 'services', '%s-role.yaml' % role['name'].lower())
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delete(role_path)
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delete(host_config_and_reboot_path)
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delete(krb_service_principals_path)
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delete(common_services_path)
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nic_config_dir = os.path.join(base_path, 'network', 'config')
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for sample_nic_config_dir in os.listdir(nic_config_dir):
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delete(os.path.join(
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nic_config_dir, sample_nic_config_dir,
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'%s.yaml' % role['name'].lower()))
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if 'deprecated_nic_config_name' in role:
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delete(os.path.join(
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nic_config_dir, sample_nic_config_dir,
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role['deprecated_nic_config_name']))
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opts = parse_opts(sys.argv)
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role_data_path = os.path.join(opts.base_path, opts.roles_data)
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network_data_path = os.path.join(opts.base_path, opts.network_data)
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if opts.clean:
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clean_templates(opts.base_path, role_data_path, network_data_path)
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else:
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process_templates(opts.base_path, role_data_path, opts.output_dir,
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network_data_path, (not opts.safe), opts.dry_run)
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