Fixing DTrace probe instantiation such that it happens within start()

lib/tenso.js

@@ -167,23 +167,14 @@ class Tenso extends Base {
 		};
 		this.etags = null;
 		this.dtrace = this.config.dtrace;
-		this.dtp = this.dtrace ? dtrace("tenso") : null;
+		this.dtp = null;
 		this.probes = new Map();
 		this.rates = new Map();
 		this.renderers = renderers;
 		this.router = null;
 		this.serializers = serializers;
 		this.server = null;
 		this.version = "";
-
-		if (this.dtrace) {
-			this.probes.set("etag", this.dtp.addProbe("etag", "char *", "char *", "char *"));
-			this.probes.set("headers", this.dtp.addProbe("headers", "char *", "char *", "int", "char *"));
-			this.probes.set("rate", this.dtp.addProbe("rate", "char *", "char *", "bool", "int", "int", "int", "char *"));
-			this.probes.set("render", this.dtp.addProbe("render", "char *", "char *", "char *"));
-			this.probes.set("send", this.dtp.addProbe("send", "char *", "char *", "int", "char *"));
-			this.dtp.enable();
-		}
 	}
 
 	all (route, fn) {
@@ -548,6 +539,18 @@ class Tenso extends Base {
 				}).on("stream", this.router.route).listen(this.config.port, this.config.host, () => this.drop());
 			}
 
+			this.dtrace = this.config.dtrace;
+
+			if (this.dtrace) {
+				this.dtp = dtrace("tenso");
+				this.probes.set("etag", this.dtp.addProbe("etag", "char *", "char *", "char *"));
+				this.probes.set("headers", this.dtp.addProbe("headers", "char *", "char *", "int", "char *"));
+				this.probes.set("rate", this.dtp.addProbe("rate", "char *", "char *", "bool", "int", "int", "int", "char *"));
+				this.probes.set("render", this.dtp.addProbe("render", "char *", "char *", "char *"));
+				this.probes.set("send", this.dtp.addProbe("send", "char *", "char *", "int", "char *"));
+				this.dtp.enable();
+			}
+
 			this.log(`Started server on port ${this.config.host}:${this.config.port}`, "debug");
 		}
 

package.json

@@ -1,7 +1,7 @@
 {
   "name": "tenso",
   "description": "Tensō is an HTTP/HTTP2 REST API framework",
-  "version": "10.4.3",
+  "version": "10.4.4",
   "homepage": "http://avoidwork.github.io/tenso",
   "author": "Jason Mulligan <[email protected]>",
   "repository": {