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

"""Displays a single report including all the events associated with that
    report and their status.

    The report_id may be the puppetdb's report hash or the
    configuration_version. This allows for better integration
    into puppet-hipchat.

    :param env: Search for reports in this environment
    :type env: :obj:`string`
    :param node_name: Find the reports whose certname match this value
    :type node_name: :obj:`string`
    :param report_id: The hash or the configuration_version of the desired
        report
    :type report_id: :obj:`string`
    """
    envs = environments()
    check_env(env, envs)
    query = AndOperator()
    report_id_query = OrOperator()

    report_id_query.add(EqualsOperator("hash", report_id))
    report_id_query.add(EqualsOperator("configuration_version", report_id))

    if env != '*':
        query.add(EqualsOperator("environment", env))

    query.add(EqualsOperator("certname", node_name))
    query.add(report_id_query)

    reports = puppetdb.reports(query=query)

    try:

def inventory_ajax(env):
    """Backend endpoint for inventory table"""
    draw = int(request.args.get('draw', 0))

    envs = environments()
    check_env(env, envs)
    headers, fact_names = inventory_facts()

    query = AndOperator()
    fact_query = OrOperator()
    fact_query.add([EqualsOperator("name", name) for name in fact_names])
    query.add(fact_query)

    if env != '*':
        query.add(EqualsOperator("environment", env))

    facts = puppetdb.facts(query=query)

    fact_data = {}
    for fact in facts:
        if fact.node not in fact_data:

def not_found(e):
    envs = environments()
    return render_template('404.html', envs=envs), 404

def metrics(env):
    """Lists all available metrics that PuppetDB is aware of.

    :param env: While this parameter serves no function purpose it is required
        for the environments template block
    :type env: :obj:`string`
    """
    envs = environments()
    check_env(env, envs)

    metrics = get_or_abort(puppetdb._query, 'mbean')
    return render_template('metrics.html',
                           metrics=sorted(metrics.keys()),
                           envs=envs,
                           current_env=env)

def server_error(e):
    envs = []
    try:
        envs = environments()
    except InternalServerError as e:
        pass
    return render_template('500.html', envs=envs), 500

def fact_ajax(env, node, fact, value):
    """Fetches the specific facts matching (node/fact/value) from PuppetDB and
    return a JSON table

    :param env: Searches for facts in this environment
    :type env: :obj:`string`
    :param node: Find all facts for this node
    :type node: :obj:`string`
    :param fact: Find all facts with this name
    :type fact: :obj:`string`
    :param value: Filter facts whose value is equal to this
    :type value: :obj:`string`
    """
    draw = int(request.args.get('draw', 0))

    envs = environments()
    check_env(env, envs)

    render_graph = False
    if fact in graph_facts and not value and not node:
        render_graph = True

    query = AndOperator()
    if node:
        query.add(EqualsOperator("certname", node))

    if env != '*':
        query.add(EqualsOperator("environment", env))

    if len(query.operations) == 0:
        query = None

def catalogs(env, compare):
    """Lists all nodes with a compiled catalog.

    :param env: Find the nodes with this catalog_environment value
    :type env: :obj:`string`
    """
    envs = environments()
    check_env(env, envs)

    if not app.config['ENABLE_CATALOG']:
        log.warning('Access to catalog interface disabled by administrator')
        abort(403)

    return render_template(
        'catalogs.html',
        compare=compare,
        columns=CATALOGS_COLUMNS,
        envs=envs,
        current_env=env)

def catalog_node(env, node_name):
    """Fetches from PuppetDB the compiled catalog of a given node.

    :param env: Find the catalog with this environment value
    :type env: :obj:`string`
    """
    envs = environments()
    check_env(env, envs)

    if app.config['ENABLE_CATALOG']:
        catalog = get_or_abort(puppetdb.catalog,
                               node=node_name)
        return render_template('catalog.html',
                               catalog=catalog,
                               envs=envs,
                               current_env=env)
    else:
        log.warn('Access to catalog interface disabled by administrator')
        abort(403)

def catalogs_ajax(env, compare):
    """Server data to catalogs as JSON to Jquery datatables
    """
    draw = int(request.args.get('draw', 0))
    start = int(request.args.get('start', 0))
    length = int(request.args.get('length', app.config['NORMAL_TABLE_COUNT']))
    paging_args = {'limit': length, 'offset': start}
    search_arg = request.args.get('search[value]')
    order_column = int(request.args.get('order[0][column]', 0))
    order_filter = CATALOGS_COLUMNS[order_column].get(
        'filter', CATALOGS_COLUMNS[order_column]['attr'])
    order_dir = request.args.get('order[0][dir]', 'asc')
    order_args = '[{"field": "%s", "order": "%s"}]' % (order_filter, order_dir)

    envs = environments()
    check_env(env, envs)

    query = AndOperator()
    if env != '*':
        query.add(EqualsOperator("catalog_environment", env))
    if search_arg:
        query.add(RegexOperator("certname", r"%s" % search_arg))
    query.add(NullOperator("catalog_timestamp", False))

    nodes = get_or_abort(puppetdb.nodes,
                         query=query,
                         include_total=True,
                         order_by=order_args,
                         **paging_args)

    catalog_list = []

def nodes(env):
    """Fetch all (active) nodes from PuppetDB and stream a table displaying
    those nodes.

    Downside of the streaming aproach is that since we've already sent our
    headers we can't abort the request if we detect an error. Because of this
    we'll end up with an empty table instead because of how yield_or_stop
    works. Once pagination is in place we can change this but we'll need to
    provide a search feature instead.

    :param env: Search for nodes in this (Catalog and Fact) environment
    :type env: :obj:`string`
    """
    envs = environments()
    status_arg = request.args.get('status', '')
    check_env(env, envs)

    query = AndOperator()

    if env != '*':
        query.add(EqualsOperator("catalog_environment", env))

    if status_arg in ['failed', 'changed', 'unchanged']:
        query.add(EqualsOperator('latest_report_status', status_arg))
    elif status_arg == 'unreported':
        unreported = datetime.datetime.utcnow()
        unreported = (unreported -
                      timedelta(hours=app.config['UNRESPONSIVE_HOURS']))
        unreported = unreported.replace(microsecond=0).isoformat()