horizon/openstack_dashboard/utils/settings.py
Tyler Smith 2e7dce8268 Adds extensible header functionality
This change is to introduce a flexible mechanism for projects to
add content to horizon's navbar.
- Introduces a new plugin file variable called ADD_HEADER_SECTIONS,
  which will take a list of views.  These are template views that
  will be used to render individual header sections.
- There is a new view in openstack_dashboard/views.py to cycle
  through these added views and combine them into the complete
  header to be added to the navbar.
- This view is queried by newly added javascript after page load.
  On response it is inserted into the page's navbar.
  If more than one header is present, the first will be shown in
  the navbar, while the rest are added to a drop-down menu.
- The currently displayed header can be changed by clicking on a
  new header in the drop-down; this is stored in a cookie to
  persist the selection between pages.
- Unit tests were modified/added to verify the new plugin entry
  can be parsed successfully and the main header view can parse
  a plugin's view successfully

Change-Id: I177b69ec4e78c17f827e540a7e669af1c29e8b59
Implements: blueprint extensible-header
Signed-off-by: Tyler Smith <tyler.smith@windriver.com>
2017-10-03 17:11:06 +00:00

349 lines
14 KiB
Python
Executable File

# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import collections
from importlib import import_module
import logging
import os
import pkgutil
from horizon.utils import file_discovery
from openstack_dashboard import theme_settings
def import_submodules(module):
"""Import all submodules and make them available in a dict."""
submodules = {}
for loader, name, ispkg in pkgutil.iter_modules(module.__path__,
module.__name__ + '.'):
try:
submodule = import_module(name)
except ImportError as e:
# FIXME: Make the errors non-fatal (do we want that?).
logging.warning("Error importing %s", name)
logging.exception(e)
else:
parent, child = name.rsplit('.', 1)
submodules[child] = submodule
return submodules
def import_dashboard_config(modules):
"""Imports configuration from all the modules and merges it."""
config = collections.defaultdict(dict)
for module in modules:
for submodule in import_submodules(module).values():
if hasattr(submodule, 'DASHBOARD'):
dashboard = submodule.DASHBOARD
config[dashboard].update(submodule.__dict__)
elif (hasattr(submodule, 'PANEL')
or hasattr(submodule, 'PANEL_GROUP')
or hasattr(submodule, 'FEATURE')):
# If enabled and local.enabled contains a same filename,
# the file loaded later (i.e., local.enabled) will be used.
name = submodule.__name__.rsplit('.', 1)[1]
config[name] = submodule.__dict__
else:
logging.warning("Skipping %s because it doesn't have DASHBOARD"
", PANEL, PANEL_GROUP, or FEATURE defined.",
submodule.__name__)
return sorted(config.items(),
key=lambda c: c[1]['__name__'].rsplit('.', 1)[1])
def update_dashboards(modules, horizon_config, installed_apps):
"""Imports dashboard and panel configuration from modules and applies it.
The submodules from specified modules are imported, and the configuration
for the specific dashboards is merged, with the later modules overriding
settings from the former. Then the configuration is applied to
horizon_config and installed_apps, in alphabetical order of files from
which the configurations were imported.
For example, given this setup:
| foo/__init__.py
| foo/_10_baz.py
| foo/_20_qux.py
| bar/__init__.py
| bar/_30_baz_.py
and being called with ``modules=[foo, bar]``, we will first have the
configuration from ``_10_baz`` and ``_30_baz`` merged, then the
configurations will be applied in order ``qux``, ``baz`` (``baz`` is
second, because the most recent file which contributed to it, ``_30_baz``,
comes after ``_20_qux``).
Panel specific configurations are stored in horizon_config. Dashboards
from both plugin-based and openstack_dashboard must be registered before
the panel configuration can be applied. Making changes to the panel is
deferred until the horizon autodiscover is completed, configurations are
applied in alphabetical order of files where it was imported.
"""
config_dashboards = horizon_config.get('dashboards', [])
if config_dashboards or horizon_config.get('default_dashboard'):
logging.warning(
'"dashboards" and "default_dashboard" in (local_)settings is '
'DEPRECATED now and may be unsupported in some future release. '
'The preferred way to specify the order of dashboards and the '
'default dashboard is the pluggable dashboard mechanism (in %s).',
', '.join([os.path.abspath(module.__path__[0])
for module in modules])
)
enabled_dashboards = []
disabled_dashboards = []
exceptions = horizon_config.get('exceptions', {})
apps = []
angular_modules = []
js_files = []
js_spec_files = []
scss_files = []
panel_customization = []
header_sections = []
update_horizon_config = {}
for key, config in import_dashboard_config(modules):
if config.get('DISABLED', False):
if config.get('DASHBOARD'):
disabled_dashboards.append(config.get('DASHBOARD'))
continue
_apps = config.get('ADD_INSTALLED_APPS', [])
apps.extend(_apps)
_header_sections = config.get('ADD_HEADER_SECTIONS', [])
header_sections.extend(_header_sections)
if config.get('AUTO_DISCOVER_STATIC_FILES', False):
for _app in _apps:
module = import_module(_app)
base_path = os.path.join(module.__path__[0], 'static/')
file_discovery.populate_horizon_config(horizon_config,
base_path)
add_exceptions = config.get('ADD_EXCEPTIONS', {}).items()
for category, exc_list in add_exceptions:
exceptions[category] = tuple(set(exceptions.get(category, ())
+ exc_list))
angular_modules.extend(config.get('ADD_ANGULAR_MODULES', []))
# avoid pulling in dashboard javascript dependencies multiple times
existing = set(js_files)
js_files.extend([f for f in config.get('ADD_JS_FILES', [])
if f not in existing])
js_spec_files.extend(config.get('ADD_JS_SPEC_FILES', []))
scss_files.extend(config.get('ADD_SCSS_FILES', []))
update_horizon_config.update(
config.get('UPDATE_HORIZON_CONFIG', {}))
if config.get('DASHBOARD'):
dashboard = key
enabled_dashboards.append(dashboard)
if config.get('DEFAULT', False):
horizon_config['default_dashboard'] = dashboard
elif config.get('PANEL') or config.get('PANEL_GROUP'):
config.pop("__builtins__", None)
panel_customization.append(config)
# Preserve the dashboard order specified in settings
dashboards = ([d for d in config_dashboards
if d not in disabled_dashboards] +
[d for d in enabled_dashboards
if d not in config_dashboards])
horizon_config['panel_customization'] = panel_customization
horizon_config['header_sections'] = header_sections
horizon_config['dashboards'] = tuple(dashboards)
horizon_config.setdefault('exceptions', {}).update(exceptions)
horizon_config.update(update_horizon_config)
horizon_config.setdefault('angular_modules', []).extend(angular_modules)
horizon_config.setdefault('js_files', []).extend(js_files)
horizon_config.setdefault('js_spec_files', []).extend(js_spec_files)
horizon_config.setdefault('scss_files', []).extend(scss_files)
# apps contains reference to applications declared in the enabled folder
# basically a list of applications that are internal and external plugins
# installed_apps contains reference to applications declared in settings
# such as django.contribe.*, django_pyscss, compressor, horizon, etc...
# for translation, we are only interested in the list of external plugins
# so we save the reference to it before we append to installed_apps
horizon_config.setdefault('plugins', []).extend(apps)
installed_apps[0:0] = apps
# Order matters, list the xstatic module name and the entry point file(s) for
# that module (this is often defined as the "main" in bower.json, and
# as the xstatic module MAIN variable in the very few compliant xstatic
# modules). If the xstatic module does define a MAIN then set the files
# list to None.
# This list is to be used as the base list which is potentially added to in
# local_settings.py before being passed to get_xstatic_dirs()
BASE_XSTATIC_MODULES = [
('xstatic.pkg.jquery', ['jquery.js']),
('xstatic.pkg.jquery_migrate', ['jquery-migrate.js']),
('xstatic.pkg.angular', [
'angular.js',
'angular-cookies.js',
'angular-sanitize.js',
'angular-route.js'
]),
('xstatic.pkg.angular_bootstrap', ['angular-bootstrap.js']),
('xstatic.pkg.angular_gettext', None),
('xstatic.pkg.angular_lrdragndrop', None),
('xstatic.pkg.angular_smart_table', None),
('xstatic.pkg.angular_fileupload', ['ng-file-upload-all.js']),
('xstatic.pkg.d3', ['d3.js']),
('xstatic.pkg.jquery_quicksearch', ['jquery.quicksearch.js']),
('xstatic.pkg.jquery_tablesorter', ['jquery.tablesorter.js']),
('xstatic.pkg.jquery_ui', ['jquery-ui.js']),
('xstatic.pkg.bootstrap_scss', ['js/bootstrap.js']),
('xstatic.pkg.bootstrap_datepicker', ['bootstrap-datepicker.js']),
('xstatic.pkg.hogan', ['hogan.js']),
('xstatic.pkg.rickshaw', ['rickshaw.js']),
('xstatic.pkg.jsencrypt', None),
('xstatic.pkg.objectpath', ['ObjectPath.js']),
('xstatic.pkg.tv4', ['tv4.js']),
('xstatic.pkg.angular_schema_form', ['schema-form.js']),
# @imported in scss files diectly
('xstatic.pkg.font_awesome', []),
('xstatic.pkg.bootswatch', []),
('xstatic.pkg.roboto_fontface', []),
('xstatic.pkg.mdi', []),
# testing only, not included in application
('xstatic.pkg.jasmine', []),
('xstatic.pkg.termjs', []),
]
def get_xstatic_dirs(XSTATIC_MODULES, HORIZON_CONFIG):
"""Discover static file configuration of the xstatic modules.
For each entry in the XSTATIC_MODULES list we determine the entry
point files (which may come from the xstatic MAIN var) and then
determine where in the Django static tree the xstatic package's contents
should be placed.
For jquery.bootstrap.wizard.js the module name is None the static file is
actually a 3rd-party file but resides in the Horizon source tree and not
an xstatic package.
The xstatic.pkg.jquery_ui package had its contents moved by packagers so
it must be handled as a special case.
"""
STATICFILES_DIRS = []
HORIZON_CONFIG['xstatic_lib_files'] = []
for module_name, files in XSTATIC_MODULES:
module = import_module(module_name)
if module_name == 'xstatic.pkg.jquery_ui':
# determine the correct path for jquery-ui which packagers moved
if module.VERSION.startswith('1.10.'):
# The 1.10.x versions already contain 'ui' directory.
files = ['ui/' + files[0]]
STATICFILES_DIRS.append(
('horizon/lib/' + module.NAME, module.BASE_DIR)
)
# pull the file entry points from the xstatic package MAIN if possible
if hasattr(module, 'MAIN'):
files = module.MAIN
if not isinstance(files, list):
files = [files]
# just the Javascript files, please (don't <script> css, etc
# which is explicitly included in style/themes as appropriate)
files = [file for file in files if file.endswith('.js')]
# add to the list of files to link in the HTML
for file in files:
file = 'horizon/lib/' + module.NAME + '/' + file
HORIZON_CONFIG['xstatic_lib_files'].append(file)
return STATICFILES_DIRS
def find_static_files(
HORIZON_CONFIG,
AVAILABLE_THEMES,
THEME_COLLECTION_DIR,
ROOT_PATH):
import horizon
import openstack_dashboard
os_dashboard_home_dir = openstack_dashboard.__path__[0]
horizon_home_dir = horizon.__path__[0]
# note the path must end in a '/' or the resultant file paths will have a
# leading "/"
file_discovery.populate_horizon_config(
HORIZON_CONFIG,
os.path.join(horizon_home_dir, 'static/')
)
# filter out non-angular javascript code and lib
HORIZON_CONFIG['js_files'] = ([f for f in HORIZON_CONFIG['js_files']
if not f.startswith('horizon/')])
# note the path must end in a '/' or the resultant file paths will have a
# leading "/"
file_discovery.populate_horizon_config(
HORIZON_CONFIG,
os.path.join(os_dashboard_home_dir, 'static/'),
sub_path='app/'
)
# Discover theme static resources, and in particular any
# static HTML (client-side) that the theme overrides
theme_static_files = {}
theme_info = theme_settings.get_theme_static_dirs(
AVAILABLE_THEMES,
THEME_COLLECTION_DIR,
ROOT_PATH)
for url, path in theme_info:
discovered_files = {}
# discover static files provided by the theme
file_discovery.populate_horizon_config(
discovered_files,
path
)
# Get the theme name from the theme url
theme_name = url.split('/')[-1]
# build a dictionary of this theme's static HTML templates.
# For each overridden template, strip off the '/templates/' part of the
# theme filename then use that name as the key, and the location in the
# theme directory as the value. This allows the quick lookup of
# theme path for any file overridden by a theme template
template_overrides = {}
for theme_file in discovered_files['external_templates']:
# Example:
# external_templates_dict[
# 'framework/widgets/help-panel/help-panel.html'
# ] = 'themes/material/templates/framework/widgets/\
# help-panel/help-panel.html'
(templates_part, override_path) = theme_file.split('/templates/')
template_overrides[override_path] = 'themes/' + \
theme_name + theme_file
discovered_files['template_overrides'] = template_overrides
# Save all of the discovered file info for this theme in our
# 'theme_files' object using the theme name as the key
theme_static_files[theme_name] = discovered_files
# Add the theme file info to the horizon config for use by template tags
HORIZON_CONFIG['theme_static_files'] = theme_static_files