mirror of
https://gitlab2.federez.net/re2o/re2o
synced 2024-11-20 10:23:12 +00:00
228 lines
9 KiB
Python
228 lines
9 KiB
Python
# -*- coding: utf-8 -*-
|
|
import sys
|
|
import json
|
|
|
|
import six
|
|
from django.conf import settings
|
|
from django.core.management.base import BaseCommand, CommandError
|
|
|
|
from topologie.management.modelviz import ModelGraph, generate_dot
|
|
from django_extensions.management.utils import signalcommand
|
|
|
|
try:
|
|
import pygraphviz
|
|
HAS_PYGRAPHVIZ = True
|
|
except ImportError:
|
|
HAS_PYGRAPHVIZ = False
|
|
|
|
try:
|
|
try:
|
|
import pydotplus as pydot
|
|
except ImportError:
|
|
import pydot
|
|
HAS_PYDOT = True
|
|
except ImportError:
|
|
HAS_PYDOT = False
|
|
|
|
|
|
class Command(BaseCommand):
|
|
help = "Creates a GraphViz dot file for the specified app names. You can pass multiple app names and they will all be combined into a single model. Output is usually directed to a dot file."
|
|
|
|
can_import_settings = True
|
|
|
|
def __init__(self, *args, **kwargs):
|
|
"""Allow defaults for arguments to be set in settings.GRAPH_MODELS.
|
|
Each argument in self.arguments is a dict where the key is the
|
|
space-separated args and the value is our kwarg dict.
|
|
The default from settings is keyed as the long arg name with '--'
|
|
removed and any '-' replaced by '_'.
|
|
"""
|
|
self.arguments = {
|
|
'--pygraphviz': {
|
|
'action': 'store_true', 'dest': 'pygraphviz',
|
|
'help': 'Use PyGraphViz to generate the image.'},
|
|
|
|
'--pydot': {'action': 'store_true', 'dest': 'pydot',
|
|
'help': 'Use PyDot(Plus) to generate the image.'},
|
|
|
|
'--disable-fields -d': {
|
|
'action': 'store_true', 'dest': 'disable_fields',
|
|
'help': 'Do not show the class member fields'},
|
|
|
|
'--group-models -g': {
|
|
'action': 'store_true', 'dest': 'group_models',
|
|
'help': 'Group models together respective to their '
|
|
'application'},
|
|
|
|
'--all-applications -a': {
|
|
'action': 'store_true', 'dest': 'all_applications',
|
|
'help': 'Automatically include all applications from '
|
|
'INSTALLED_APPS'},
|
|
|
|
'--output -o': {
|
|
'action': 'store', 'dest': 'outputfile',
|
|
'help': 'Render output file. Type of output dependend on file '
|
|
'extensions. Use png or jpg to render graph to image.'},
|
|
|
|
'--layout -l': {
|
|
'action': 'store', 'dest': 'layout', 'default': 'dot',
|
|
'help': 'Layout to be used by GraphViz for visualization. '
|
|
'Layouts: circo dot fdp neato nop nop1 nop2 twopi'},
|
|
|
|
'--verbose-names -n': {
|
|
'action': 'store_true', 'dest': 'verbose_names',
|
|
'help': 'Use verbose_name of models and fields'},
|
|
|
|
'--language -L': {
|
|
'action': 'store', 'dest': 'language',
|
|
'help': 'Specify language used for verbose_name localization'},
|
|
|
|
'--exclude-columns -x': {
|
|
'action': 'store', 'dest': 'exclude_columns',
|
|
'help': 'Exclude specific column(s) from the graph. '
|
|
'Can also load exclude list from file.'},
|
|
|
|
'--exclude-models -X': {
|
|
'action': 'store', 'dest': 'exclude_models',
|
|
'help': 'Exclude specific model(s) from the graph. Can also '
|
|
'load exclude list from file. Wildcards (*) are allowed.'},
|
|
|
|
'--include-models -I': {
|
|
'action': 'store', 'dest': 'include_models',
|
|
'help': 'Restrict the graph to specified models. Wildcards '
|
|
'(*) are allowed.'},
|
|
|
|
'--inheritance -e': {
|
|
'action': 'store_true', 'dest': 'inheritance', 'default': True,
|
|
'help': 'Include inheritance arrows (default)'},
|
|
|
|
'--no-inheritance -E': {
|
|
'action': 'store_false', 'dest': 'inheritance',
|
|
'help': 'Do not include inheritance arrows'},
|
|
|
|
'--hide-relations-from-fields -R': {
|
|
'action': 'store_false', 'dest': 'relations_as_fields',
|
|
'default': True,
|
|
'help': 'Do not show relations as fields in the graph.'},
|
|
|
|
'--disable-sort-fields -S': {
|
|
'action': 'store_false', 'dest': 'sort_fields',
|
|
'default': True, 'help': 'Do not sort fields'},
|
|
|
|
'--json': {'action': 'store_true', 'dest': 'json',
|
|
'help': 'Output graph data as JSON'}
|
|
}
|
|
|
|
defaults = getattr(settings, 'GRAPH_MODELS', None)
|
|
|
|
if defaults:
|
|
for argument in self.arguments:
|
|
arg_split = argument.split(' ')
|
|
setting_opt = arg_split[0].lstrip('-').replace('-', '_')
|
|
if setting_opt in defaults:
|
|
self.arguments[argument]['default'] = defaults[setting_opt]
|
|
|
|
super(Command, self).__init__(*args, **kwargs)
|
|
|
|
def add_arguments(self, parser):
|
|
"""Unpack self.arguments for parser.add_arguments."""
|
|
parser.add_argument('app_label', nargs='*')
|
|
for argument in self.arguments:
|
|
parser.add_argument(*argument.split(' '),
|
|
**self.arguments[argument])
|
|
|
|
@signalcommand
|
|
def handle(self, *args, **options):
|
|
args = options['app_label']
|
|
if len(args) < 1 and not options['all_applications']:
|
|
raise CommandError("need one or more arguments for appname")
|
|
|
|
use_pygraphviz = options.get('pygraphviz', False)
|
|
use_pydot = options.get('pydot', False)
|
|
use_json = options.get('json', False)
|
|
if use_json and (use_pydot or use_pygraphviz):
|
|
raise CommandError("Cannot specify --json with --pydot or --pygraphviz")
|
|
|
|
cli_options = ' '.join(sys.argv[2:])
|
|
graph_models = ModelGraph(args, cli_options=cli_options, **options)
|
|
graph_models.generate_graph_data()
|
|
graph_data = graph_models.get_graph_data(as_json=use_json)
|
|
if use_json:
|
|
self.render_output_json(graph_data, **options)
|
|
return
|
|
|
|
dotdata = generate_dot(graph_data)
|
|
if not six.PY3:
|
|
dotdata = dotdata.encode('utf-8')
|
|
if options['outputfile']:
|
|
if not use_pygraphviz and not use_pydot:
|
|
if HAS_PYGRAPHVIZ:
|
|
use_pygraphviz = True
|
|
elif HAS_PYDOT:
|
|
use_pydot = True
|
|
if use_pygraphviz:
|
|
self.render_output_pygraphviz(dotdata, **options)
|
|
elif use_pydot:
|
|
self.render_output_pydot(dotdata, **options)
|
|
else:
|
|
raise CommandError("Neither pygraphviz nor pydotplus could be found to generate the image")
|
|
else:
|
|
self.print_output(dotdata)
|
|
|
|
def print_output(self, dotdata):
|
|
if six.PY3 and isinstance(dotdata, six.binary_type):
|
|
dotdata = dotdata.decode()
|
|
|
|
print(dotdata)
|
|
|
|
def render_output_json(self, graph_data, **kwargs):
|
|
output_file = kwargs.get('outputfile')
|
|
if output_file:
|
|
with open(output_file, 'wt') as json_output_f:
|
|
json.dump(graph_data, json_output_f)
|
|
else:
|
|
print(json.dumps(graph_data))
|
|
|
|
def render_output_pygraphviz(self, dotdata, **kwargs):
|
|
"""Renders the image using pygraphviz"""
|
|
if not HAS_PYGRAPHVIZ:
|
|
raise CommandError("You need to install pygraphviz python module")
|
|
|
|
version = pygraphviz.__version__.rstrip("-svn")
|
|
try:
|
|
if tuple(int(v) for v in version.split('.')) < (0, 36):
|
|
# HACK around old/broken AGraph before version 0.36 (ubuntu ships with this old version)
|
|
import tempfile
|
|
tmpfile = tempfile.NamedTemporaryFile()
|
|
tmpfile.write(dotdata)
|
|
tmpfile.seek(0)
|
|
dotdata = tmpfile.name
|
|
except ValueError:
|
|
pass
|
|
|
|
graph = pygraphviz.AGraph(dotdata)
|
|
graph.layout(prog=kwargs['layout'])
|
|
graph.draw(kwargs['outputfile'])
|
|
|
|
def render_output_pydot(self, dotdata, **kwargs):
|
|
"""Renders the image using pydot"""
|
|
if not HAS_PYDOT:
|
|
raise CommandError("You need to install pydot python module")
|
|
|
|
graph = pydot.graph_from_dot_data(dotdata)
|
|
if not graph:
|
|
raise CommandError("pydot returned an error")
|
|
if isinstance(graph, (list, tuple)):
|
|
if len(graph) > 1:
|
|
sys.stderr.write("Found more then one graph, rendering only the first one.\n")
|
|
graph = graph[0]
|
|
|
|
output_file = kwargs['outputfile']
|
|
formats = ['bmp', 'canon', 'cmap', 'cmapx', 'cmapx_np', 'dot', 'dia', 'emf',
|
|
'em', 'fplus', 'eps', 'fig', 'gd', 'gd2', 'gif', 'gv', 'imap',
|
|
'imap_np', 'ismap', 'jpe', 'jpeg', 'jpg', 'metafile', 'pdf',
|
|
'pic', 'plain', 'plain-ext', 'png', 'pov', 'ps', 'ps2', 'svg',
|
|
'svgz', 'tif', 'tiff', 'tk', 'vml', 'vmlz', 'vrml', 'wbmp', 'xdot']
|
|
ext = output_file[output_file.rfind('.') + 1:]
|
|
format = ext if ext in formats else 'raw'
|
|
graph.write(output_file, format=format)
|