Function inject_fields 

pub fn inject_fields(
    doc: &mut Value,
    fields: &[(FieldName, Value)],
) -> Result<(), RewriteError>

Inserts each (name, value) into the top-level object of doc.

A field that already exists is a RewriteError::ReservedFieldCollision, not an overwrite: a client must not be able to pre-seed a tenancy field and defeat isolation (docs/03).

Errors

Returns RewriteError::NotAnObject if doc is not a JSON object, or RewriteError::ReservedFieldCollision if a field is already present.

Examples

use serde_json::{json, Value};
use osproxy_core::FieldName;
use osproxy_rewrite::inject_fields;

let mut doc = json!({ "msg": "hi" });
inject_fields(&mut doc, &[(FieldName::from("_tenant"), Value::from("acme"))]).unwrap();
assert_eq!(doc["_tenant"], json!("acme"));