Module vars 

Request/response variable resolution and condition expressions.

The featherbit analogue of APISIX’s ctx.var + lua-resty-expr: plugins resolve named variables against the Context (uri, arg_<name>, http_<header>, …), interpolate $var / ${var} templates, and evaluate condition expressions written in APISIX’s triple-array form:

vars:
  - ["arg_name", "==", "jack"]
  - ["http_user_agent", "~~", "Mozilla.+"]

Rules in a top-level list are ANDed. A rule is [var, op, value] or the negated [var, "!", op, value]; nested logic uses ["AND", rule...] / ["OR", rule...]. Supported operators: ==, ~=, >, >=, <, <=, ~~ (regex), ~* (case-insensitive regex), in (value array), has (var array contains value), ipmatch (value is a list of IPs/CIDRs).

Structs

Expr

A compiled condition expression in APISIX’s triple-array form.

Enums

Node 🔒

Op 🔒

Functions

cookie_value 🔒

eval_node 🔒

eval_op 🔒

hex_val 🔒

interpolate

Interpolates $var and ${var} references in a template.

message_str 🔒

parse_node 🔒

post_arg 🔒

query_string 🔒

resolve

Resolves a variable name against the context.

split_remote_addr 🔒

Splits ip:port, tolerating bare IPs and bracketed IPv6.

urldecode 🔒