rvrdata.jinja2.filters

Custom filters for Jinja2 environments.

All functions added to this module are made available as custom filters in rvrdata.

See https://jinja.palletsprojects.com/en/3.0.x/api/#writing-filters

env_override(value, key)

Retrieve an environment variable and override value.

Works with jinja2 filters in the following format: : “test” : {{ “default” | env_override(‘CUSTOM’) }}

regex_replace(s, find, replace)

Replace text using a non-optimal implementation of a regex filter.

str_to_utc_str(date_str, date_format)

Convert a date string to UTC ISO8601 Shorthand format.

Current implementation is timezone naive and assumes UTC.

For a list of date format codes, see: https://docs.python.org/3/library/datetime.html#strftime-and-strptime-format-codes

is_ip(address)

Test if string is a valid IP address or network.

ip_address(address)

Convert a string or integer into an IP address.

See https://docs.python.org/3/howto/ipaddress.html

ip_network(network, strict=False)

Convert a string or integer into an IP network.

See https://docs.python.org/3/howto/ipaddress.html

ip_interface(address)

Convert a string or integer into an IP interface.

See https://docs.python.org/3/howto/ipaddress.html

is_subnet_of(cidr_a, cidr_b)

Check if a CIDR block (eg. x.x.x.x/yy) is child of another CIDR block.

The strings provided must be valid CIDR blocks or else a ValueError will be raised.

first_ip_address(cidr)

Get the first IP address of a CIDR block.

netmask_to_cidr(network_netmask)

Return the CIDR block version of network and netmask.

required(val, msg='', show_val=False, patt='')

Check if variable has a value.

Test for empty strings or missing values. For numbers, 0 is allowed, as is ‘False’ for booleans.

• Parameters:
• val (Any) – the value being tested.
• msg (str) – optional message returned if check fails.
• show_val (bool) – optional show value in error message.
• patt (str) – optional regex pattern to test for.