THREESCALE-11957 FAPI policy uses wrong header

[tkan145]

What

Fix https://issues.redhat.com/browse/THREESCALE-11957

Verification steps:

• Create an apicast-config.json file with the following content

cat <<EOF >apicast-config.json
{
  "services": [
    {
      "backend_version": "1",
      "id": "1",
      "proxy": {
        "hosts": [
          "one"
        ],
        "api_backend": "https://echo-api.3scale.net:443",
        "authentication_method": "2",
        "backend": {
          "endpoint": "http://127.0.0.1:8081",
          "host": "backend"
        },
        "policy_chain": [
          {
            "name": "apicast.policy.fapi",
            "configuration": {}
          },
          {
            "name": "apicast.policy.apicast"
          }
        ],
        "proxy_rules": [
          {
            "http_method": "GET",
            "pattern": "/",
            "metric_system_name": "hits",
            "delta": 1,
            "parameters": [],
            "querystring_parameters": {}
          }
        ]
      }
    }
  ]
}
EOF

• Checkout this branch and start dev environment

make development
make dependencies

• Run apicast locally

THREESCALE_DEPLOYMENT_ENV=staging APICAST_LOG_LEVEL=warn APICAST_WORKER=1 APICAST_CONFIGURATION_LOADER=lazy APICAST_CONFIGURATION_CACHE=0 THREESCALE_CONFIG_FILE=apicast-config.json ./bin/apicast

• Capture apicast IP

APICAST_IP=$(docker inspect apicast_build_0-development-1 | yq e -P '.[0].NetworkSettings.Networks.apicast_build_0_default.IPAddress' -)

• Send a request

curl -i -k -H "Host: one" "http://${APICAST_IP}:8080/test?user_key="

• Response should be 200 and contains x-fapi-interaction-id header instead of x-fapi-transaction-id

[tkan145]

oh you are fast 🚀 , thanks @mayorova