ba606cb2c4
It was useless and we're getting rid of oslo.log, so first remove it from all over the place Change-Id: Ia6bf6e763fee41d060f6b68ddabf68424a51f780
152 lines
5.0 KiB
Python
152 lines
5.0 KiB
Python
"""Show dependencies CCP command.
|
|
|
|
This module provides logic for execution 'show-dep' command.
|
|
This command returns a set of dependencies for specified CCP components.
|
|
|
|
Usage:
|
|
ccp --config-file=<path_to_config> show-dep <component1> <component2> ...
|
|
|
|
Example:
|
|
The following example command will return set of dependencies for
|
|
nova-api and nova-compute CCP components:
|
|
ccp --config-file=~/ccp.conf show-dep nova-api nova-compute
|
|
"""
|
|
|
|
import logging
|
|
import re
|
|
import sys
|
|
|
|
from fuel_ccp.common import utils
|
|
from fuel_ccp.validation import base as base_validation
|
|
|
|
LOG = logging.getLogger(__name__)
|
|
|
|
YAML_FILE_RE = re.compile(r'\.yaml$')
|
|
|
|
|
|
class Node(object):
|
|
"""Reperesents dependency. Service or job."""
|
|
|
|
def __init__(self, name, sort, dependencies=None, job_parent=None):
|
|
self.name = name
|
|
self.sort = sort
|
|
if sort not in ['service', 'job']:
|
|
msg = "'sort' attribute must be 'service' or 'job' not \
|
|
'{sort}'".format(sort=sort)
|
|
raise ValueError(msg)
|
|
|
|
self.dependencies = dependencies or []
|
|
self.job_parent = job_parent
|
|
|
|
if self.sort == 'job' and self.job_parent is None:
|
|
msg = "'job_parent' attribute for 'job' mustn't be None"
|
|
raise ValueError(msg)
|
|
|
|
def is_service(self):
|
|
return self.sort == 'service'
|
|
|
|
|
|
def get_deps_map(components_map=None):
|
|
"""Returns dependencies map."""
|
|
components_map = components_map or utils.get_deploy_components_info()
|
|
|
|
deps_map = {}
|
|
for service_name, service_map in components_map.items():
|
|
deps_map[service_name] = Node(
|
|
service_name, 'service', _parse_service_deps(
|
|
service_map['service_content']))
|
|
deps_map.update(_parse_pre_and_post_deps(
|
|
service_map['service_content']))
|
|
|
|
return deps_map
|
|
|
|
|
|
def _parse_service_deps(service_map):
|
|
"""Parses service map and finds dependencies of daemons."""
|
|
dependencies = set()
|
|
for container in service_map['service']['containers']:
|
|
dependencies.update(container['daemon'].get('dependencies', []))
|
|
for pre in container.get('pre', []):
|
|
if pre.get('type') == 'single':
|
|
dependencies.update([pre['name']])
|
|
return list(dependencies)
|
|
|
|
|
|
def _parse_pre_and_post_deps(service_map):
|
|
"""Parses service map and finds pres and their dependencies."""
|
|
deps = {}
|
|
for container in service_map['service']['containers']:
|
|
for pre in container.get('pre', []):
|
|
deps[pre['name']] = Node(pre['name'],
|
|
'job',
|
|
pre.get('dependencies', []),
|
|
service_map['service']['name'])
|
|
|
|
for post in container.get('post', []):
|
|
if post.get('type') == 'single':
|
|
post_deps = post.get('dependencies', [])
|
|
post_deps.append(service_map['service']['name'])
|
|
deps[post['name']] = Node(post['name'],
|
|
'job',
|
|
post_deps,
|
|
service_map['service']['name'])
|
|
return deps
|
|
|
|
|
|
def _calculate_service_deps(service_name, deps_map):
|
|
if service_name not in deps_map:
|
|
msg = "Wrong component name '{}'".format(service_name)
|
|
LOG.error(msg)
|
|
sys.exit(1)
|
|
deps = set()
|
|
job_parents = set()
|
|
current_iteration_set = {deps_map[service_name]}
|
|
|
|
while current_iteration_set:
|
|
next_iteration_set = set()
|
|
for dep in current_iteration_set:
|
|
if deps_map[dep.name].is_service():
|
|
deps.update([deps_map[dep.name]])
|
|
else:
|
|
job_parents.update([dep.job_parent])
|
|
|
|
for dep in current_iteration_set:
|
|
for dependency in deps_map[dep.name].dependencies:
|
|
next_iteration_set.update([deps_map[dependency]])
|
|
current_iteration_set = next_iteration_set
|
|
|
|
deps = {dep.name for dep in deps}
|
|
return deps, job_parents
|
|
|
|
|
|
def get_deps(components, components_map=None):
|
|
deps_map = get_deps_map(components_map)
|
|
|
|
result_deps = set()
|
|
for service_name in components:
|
|
deps, job_parents = _calculate_service_deps(service_name, deps_map)
|
|
checked = {service_name}
|
|
|
|
while True:
|
|
deps.update(job_parents)
|
|
if not job_parents - checked:
|
|
break
|
|
for parent in job_parents - checked:
|
|
parent_deps, parent_parents = _calculate_service_deps(
|
|
parent, deps_map)
|
|
deps.update(parent_deps)
|
|
checked.update(job_parents - checked)
|
|
job_parents.update(parent_parents)
|
|
result_deps.update(deps)
|
|
result_deps.add('etcd')
|
|
|
|
return result_deps - set(components)
|
|
|
|
|
|
def show_dep(components):
|
|
components_map = utils.get_deploy_components_info()
|
|
base_validation.validate_components_names(set(components), components_map)
|
|
|
|
deps = get_deps(components, components_map)
|
|
print(" ".join(deps))
|