How to use the puppetboard.core.get_app function in puppetboard

from __future__ import absolute_import
from __future__ import unicode_literals

from collections import OrderedDict

from flask_wtf import FlaskForm
from wtforms import (BooleanField, RadioField, TextAreaField, validators)

from puppetboard.core import get_app

app = get_app()
QUERY_ENDPOINTS = OrderedDict([
    # PuppetDB API endpoint, Form name
    ('nodes', 'Nodes'),
    ('resources', 'Resources'),
    ('facts', 'Facts'),
    ('factsets', 'Fact Sets'),
    ('fact-paths', 'Fact Paths'),
    ('fact-contents', 'Fact Contents'),
    ('reports', 'Reports'),
    ('events', 'Events'),
    ('catalogs', 'Catalogs'),
    ('edges', 'Edges'),
    ('environments', 'Environments'),
    ('pql', 'PQL'),
])
ENABLED_QUERY_ENDPOINTS = app.config.get(

from __future__ import absolute_import
from __future__ import unicode_literals

from flask import render_template
from werkzeug.exceptions import InternalServerError

from puppetboard.core import environments, get_app

app = get_app()


@app.errorhandler(400)
def bad_request(e):
    envs = environments()
    return render_template('400.html', envs=envs), 400


@app.errorhandler(403)
def forbidden(e):
    envs = environments()
    return render_template('403.html', envs=envs), 403


@app.errorhandler(404)
def not_found(e):

{'attr': 'status', 'name': 'Status', 'type': 'status'},
    {'attr': 'certname', 'name': 'Certname', 'type': 'node'},
    {'attr': 'version', 'filter': 'configuration_version',
     'name': 'Configuration version'},
    {'attr': 'agent_version', 'filter': 'puppet_version',
     'name': 'Agent version'},
]

CATALOGS_COLUMNS = [
    {'attr': 'certname', 'name': 'Certname', 'type': 'node'},
    {'attr': 'catalog_timestamp', 'name': 'Compile Time'},
    {'attr': 'form', 'name': 'Compare'},
]


app = get_app()
graph_facts = app.config['GRAPH_FACTS']
numeric_level = getattr(logging, app.config['LOGLEVEL'].upper(), None)

logging.basicConfig(level=numeric_level)
log = logging.getLogger(__name__)

puppetdb = get_puppetdb()


@app.template_global()
def version():
    return __version__


def stream_template(template_name, **context):
    app.update_template_context(context)