This commit is to reimplement the variables with an unknown field
such as $header_{name} to make the parsing more generic,
it's a preparation for supporting response header variables.
This commit introduced the basic URI rewrite. It allows users to change request URI. Note the "rewrite" option ignores the contained query if any and the query from the request is preserverd.
An example:
"routes": [
{
"match": {
"uri": "/v1/test"
},
"action": {
"return": 200
}
},
{
"action": {
"rewrite": "/v1$uri",
"pass": "routes"
}
}
]
Reviewed-by: Alejandro Colomar <alx@nginx.com>
It's for the introduction of njs support.
For each option that supports native variable and JS template literals introduced next,
it's unified as template string.
No functional changes.
