Getting Started¶

To get started with the rules engine, you need to write a configuration file that defines the rules you want to apply:

TOML

[rules."*"."*"]
on_request = """
request.headers["X-Forwarded-For"] = "Joe"
"""

[rules."httpbin-*"."GET /*"]
on_remote_response = """
response.headers["Cache-Control"] = "max-age=3600"
"""

YAML

rules:
  "*":
    "*":
      on_request: |
        request.headers["X-Forwarded-For"] = "Joe"
  "httpbin-*":
    "GET /*":
      on_remote_response: |
        response.headers["Cache-Control"] = "max-age=3600"

Loading¶

Added in version 0.8.

The rules application is loaded by default when using the harp start or harp server command. It can be disabled by passing the --disable rules option to the command.

harp start --disable rules ...