vars

Sets one or more variables to a particular value, to be used later in the request handling chain.

The primary way to access variables is with placeholders, which have the form {vars.variable_name}, or with the vars and vars_regexp request matchers.

You may use variables with the templates directive using the placeholder function, for example: {{placeholder "http.vars.variable_name"}}

As a special case, it's possible to override the variable named http.auth.user.id, which is stored in the replacer, to update the user_id field in access logs.

Syntax

vars [<matcher>] [<name> <value>] {
    <name> <value>
    ...
}

• <name> is the variable name to set.

• <value> is the value of the variable.

  The value will be type converted if possible; true and false will be converted to boolean types, and numeric values will be converted to integer or float accordingly. To avoid this conversion and keep them as strings, you may wrap them with quotes.

Examples

To set a single variable, the value being conditional based on the request path, then responding with the value:

example.com {
	vars /foo* isFoo "yep"
	vars isFoo "nope"

	respond {vars.isFoo}
}

To set multiple variables, each converted to the appropriate scalar type:

vars {
	# boolean
	abc true

	# integer
	def 1

	# float
	ghi 2.3

	# string
	jkl "example"
}