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replace

Purpose​

replace finds and replaces a substring. The incoming string will be passed through a "replace all" where the number of replacements can be limited (default is no limit).

Usage​

"type": "replace",
"config": {
    "old": "<string>",
    "new": "<string>",
    "count": "<int>"
}

| Key | Description | | | ----------- | ------------| | old | Old value to be replaced. | new | New value to insert in place of old. | count | (optional) Maximum number of replacements to make. Defaults to no limit.

Example​

Before and After Example​

Configuration​

{
   "type": "replace",
   "config": {
       "old": "production",
       "new": "staging"
   }
}

Example Chains​

req_body() -> json_path(path="environment") -> replace(old="production", new="staging")

This will extract the environment field from the request body and replace "production" with "staging".

http_req_header(header="Host") -> replace(old="api.example.com", new="api-test.example.com")

This will extract the Host header value and replace the production domain with the test domain.

res_body() -> json_path(path="database.connectionString") -> replace(old="prod-db", new="test-db", count=1)

This will extract the database connection string from the response and replace only the first occurrence of "prod-db" with "test-db".