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Project description
ckanext-toolbelt
Collection of different tools for daily use.
Requirements
| CKAN version | Compatible? |
|---|---|
| 2.9 | yes |
| 2.10 | yes |
| master | yes |
Content
Decorators (ckanext.toolbelt.decorators)
Collector
Creates a decorator that collects functions and returns them in a dictionary. Originally designed for actions, auth functions, validators and helpers.
:information_source: CKAN v2.10 has tk.blanket module. It does the same
things in a bit different manner.
Can be used as decorator. Call Collector.get_collection when you need
dictionary with names of helpers mapped to helper functions
helper = Collector()
@helper
def func():
pass
###
# ITemplateHelpers
def get_helpers(self):
return helper.get_collection()
Collector.split allows you to visually separate decorator from the method,
that returns collection
action, get_actions = Collector().split()
@action
def func():
pass
###
# IActions
def get_actions(self):
return get_actions()
If you want your functions prefixed by the plugin name, provide this prefix as
a first argument to the Collector's constructor. If particular items must
remain unprefixed, you can specify what name to use, when decorating an item
validator, get_validators = Collector("toolbelt").split()
@validator
def func():
"""I am toolbelt_func
"""
pass
@validator("custom_func")
def func():
"""I am custom_func
"""
pass
###
# IValidators
def get_validators(self):
return get_validators()
Cache
Cache for functions.
Cache()
def func(v):
return v * v
By default, cache is based on:
- module, where function is defined
- name of the function
- positional arguments
- named arguments
That means that following two invocations cached separately:
func(10)
func(v=10)
Cached data stored in redis as a JSON serialized structure. In order to use
different serializers, you can specify dumper and loader parameters when
creating Cache instance. Any function that accepts single value and returns
str or bytes can be used as a dumper. Any function that accepts str or
bytes and returns unserialized value can be used as loader.
from pickle import dumps, loads
@Cache(dumper=dumps, loader=loads)
def func(v):
return v
As mentioned before, cache key computed using module, name of the function and
parameters. It can be changed by passing a function as key argument to the
Cache constructor. Expected signature is key_strategy(func, *args, **kwargs).
# this function will be called only once, because cache key is based on its name.
# And name will never change. Unless you change it
@Cache(key=lambda f, *a, **k: f.__name__)
def func(v):
return v
Cache duration(in seconds) can be configured via duration parameter of the
constructor(which can be a callable that returns comuted duration).
cache = Cache(duration=3600)
@cache
def func(v):
return v + v
Plugins
toolbelt_fdt_sqlalchemy
Adapter for
Flask-SQLAlchemy. Enables
SQLAlchemy panel on FlaskDebugToolbar. You have to install flask-sqlalchemy
extra to use this plugin:
pip install 'ckanext-toolbelt[flask-sqlalchemy]'
toolbelt_cascade_organization_updates
Reindex all organization's datasets when organization updated. Requires background worker.
toolbelt_composite_groups / toolbelt_composite_organizations
Enable repeating subfields(ckanext-scheming) for organization and group schemas
Back to content
CLI
As soon as you've installed ckanext-toolbelt, it will register ckan toolbelt
route for CLI. You don't have to add toolbelt to the list of enabled
plugins.
Depending on the active plugins, extra subroutes may be added to the ckan toolbelt route.
In addition, there is global ctb command that allows to use this package
without CKAN installed or without CKAN config file. But in this way some of
commands (search-index for example) are not available, because they use CKAN
core. ctb alias exists for setting up the CKAN or extensions and running
generic services, that do not rely on CKAN instance.
Global commands, available via ctb and ckan toolbelt routes:
# create a generic configuration. Supported types:
# * deps-makefile CKAN dependency manager
# * pre-commit Pre-commit
# * pyproject pyproject.toml
# * gulp-sass gulpfile.js with SASS configuration
make config <type>
# create a configuration for GitHub Action. Supported types:
# * pypi-publish Publish package to PyPI when vX.Y.Z tag added.
# * release-please Create a PR that compiles changelog and publishes GitHub release.
# * test Test workflow.
make gh-action <type>
# Generate parts of README.md
# Supported types:
# * config Print declared config options for the given plugins.
make readme <type>
# Start mail server that will catch outcomming mails.
dev mail-server
Commands that depends on CKAN core and available only via ckan toolbelt
route:
# Drop packages that are only in search index but not in DB.
search-index clear-missing
# Clean the DB, optionally keeping data in the given tables.
db clean --yes [-k user] [-k group] [-k ...]
Misc
ckanext.toolbelt.utils.cache
DontCache
Cache
ckanext.toolbelt.utils.fs
StaticPath
No-op wrapper around filepath that can be used as a context manager:
with StaticPath("/tmp/x.txt") as path:
with open(path) as src:
...
# nothing is changed
RemovablePath
Context manager that removes file on exit:
with RemovablePath("/tmp/x.txt") as path:
with open(path) as src:
...
# /tmp/x.txt is removed
path_to_resource(res_dict, max_size=0)
Returns a filepath for a resource.
If resource is stored locally, return StaticPath. If resource stored remotely,
download it to /tmp and return RemovablePath. Remote resources with size
exceeding max_size are not downloaded and empty StaticPath returned.
Example:
with path_to_resource(resource) as path:
with open(path) as src:
print(src.read())
ckanext.toolbelt.utils.scheming
get_validation_schema
ckanext.toolbelt.utils.structures
Node
ckanext.toolbelt.utils.hierarchy
Node
Strategy
ParentReference
package_hierarchy
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