Plugin for hapi that adds dtrace probes to the request lifecycle events.
Register the plugin with a hapi server:
const Hapi = require('hapi');
const HapiDTrace = require('hapi-dtrace');
const server = new Hapi.Server();
server.connection({ port: 3000 });
server.register(HapiDTrace);Start the server and run dtrace to list the available probes in the hapi provider:
$ dtrace -l -P hapi*
ID PROVIDER MODULE FUNCTION NAME
4514 hapi67987 mod-0x104801970 request request
4515 hapi67987 mod-0x104801970 pre-auth pre-auth
4516 hapi67987 mod-0x104801970 post-auth post-auth
4517 hapi67987 mod-0x104801970 pre-handler pre-handler
4518 hapi67987 mod-0x104801970 post-handler post-handler
4519 hapi67987 mod-0x104801970 pre-response pre-response
| Probe Name | Request Event | Arguments |
|---|---|---|
| request | onRequest | (request.id, method, path, headers) |
| pre-auth | onPreAuth | (request.id, method, path, headers) |
| post-auth | onPostAuth | (request.id, method, path, headers) |
| pre-handler | onPreHandler | (request.id, method, path, headers) |
| post-handler | onPostHandler | (request.id, method, path, headers) |
| pre-response | onPreResponse | (request.id, method, path, headers) |
In the /example folder is a server.js that you can run that registers the plugin. After the server is running execute the .d script with the appropriate permissions. Next, use curl or a browser to make requests to the server and observe the request information logged from dtrace.