7bf237926c
Adding a tool for generating requirements.yml files for each Openstack-Ansible role. This tool is intended to be used by maintainers of OpenStack-Ansible. The goal of the generated requirements.yml files to allow end users the ability to consume roles without needing to use all of OpenStack-Ansible. Change-Id: I8f4c0bf3ea4366bd84b671f796cedc07e5d4db80
134 lines
4.5 KiB
Python
134 lines
4.5 KiB
Python
# Copyright 2016, Walmart Stores, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain 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,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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'''This script will parse the
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openstack-ansible/ansible-role-requirements.yml file, clone any
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associated openstack-ansible roles found, and generate a
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requirements.yml for each openstack-ansible role.'''
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import io
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import os
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import subprocess
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import yaml
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# recursive function to determine all role requirements
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def resolve_deps(role, rdd):
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aggregate = []
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if rdd.get(role):
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for r in rdd.get(role):
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aggregate += resolve_deps(r, rdd)
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aggregate += rdd[role]
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return aggregate
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filename = 'openstack-ansible/ansible-role-requirements.yml'
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DEVNULL = open(os.devnull, 'w')
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# load the yaml file
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with io.open(filename, 'rb') as f:
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roles = yaml.load(f)
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role_names = []
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role_dict = {}
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formatted_dict = {}
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role_dep_dict = {}
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# convert the list of dicts to a more useful pattern.
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for role in roles:
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role_name = role['name']
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role_names.append(role_name)
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role_scm = role.get('scm')
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if role_scm == 'git' and 'openstack-ansible' in role.get('src'):
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role_dict[role_name] = role['src']
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role_dict[role_name + "__version"] = role['version']
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else:
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print("role %s will not be cloned" % role['name'])
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formatted_string = '''- name: %s\n''' % role_name
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fields = ['scm', 'src', 'version']
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for field in fields:
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if role.get(field):
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formatted_string += ''' %s: %s\n''' % (field, role[field])
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formatted_dict[role_name] = formatted_string
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for role in role_names:
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if role_dict.get(role):
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# clone or update the roles, and checkout the version
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# specified by the master role requirements
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if not os.path.exists(role):
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subprocess.check_call(["git", "clone", role_dict[
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role], role],
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stdout=DEVNULL, stderr=subprocess.STDOUT)
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os.chdir(role)
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else:
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os.chdir(role)
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subprocess.check_call(
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["git", "checkout", "master"],
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stdout=DEVNULL, stderr=subprocess.STDOUT)
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subprocess.check_call(
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["git", "pull"], stdout=DEVNULL, stderr=subprocess.STDOUT)
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subprocess.check_call(["git", "checkout", role_dict[
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role + "__version"]],
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stdout=DEVNULL, stderr=subprocess.STDOUT)
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os.chdir('..')
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requirements_list = []
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# Try to read the dependencies from the role's meta/main.yml
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try:
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with io.open(os.path.join(role, "meta", "main.yml")) as f:
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y = yaml.load(f)
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for dep in y['dependencies']:
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try:
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dep = dep['role']
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except:
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pass
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if dep in role_names:
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requirements_list.append(dep)
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else:
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print("Unknown dependency found!: %s" % dep)
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except:
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print("Error getting role dependencies for: %s" % role)
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# Add our dependencies to role_dep_dict
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role_dep_dict[role] = requirements_list
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# We can close this now.
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DEVNULL.close()
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# Now, we can generate all dependencies recursively.
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for role in role_dep_dict:
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# create a new list to copy the direct dependencies into.
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recursive_list = []
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recursive_list += role_dep_dict[role]
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# recurse through our dependencies
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for r in role_dep_dict[role]:
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recursive_list += resolve_deps(r, role_dep_dict)
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# convert to set to deduplicate the list.
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recursive_list = set(recursive_list)
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# write out requirements.yml
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output_yaml = '---\n'
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for r in sorted(recursive_list):
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output_yaml += formatted_dict[r]
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try:
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with io.open(os.path.join(role, 'requirements.yml'), 'wb') as f:
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f.write(output_yaml)
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f.truncate()
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print("Successfully wrote: %s" %
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os.path.join(role, 'requirements.yml'))
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except:
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print("Error writing requirements.yml for %s" % role)
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