add debug

README.md

@@ -1,5 +1,5 @@
 # Alpine :: Traefik Labels
-![size](https://img.shields.io/docker/image-size/11notes/traefik-labels/amd64-0.1.8?color=0eb305) ![version](https://img.shields.io/docker/v/11notes/traefik-labels/amd64-0.1.8?color=eb7a09) ![pulls](https://img.shields.io/docker/pulls/11notes/traefik-labels?color=2b75d6) ![activity](https://img.shields.io/github/commit-activity/m/11notes/docker-traefik-labels?color=c91cb8) ![commit-last](https://img.shields.io/github/last-commit/11notes/docker-traefik-labels?color=c91cb8)
+![size](https://img.shields.io/docker/image-size/11notes/traefik-labels/amd64-0.1.9?color=0eb305) ![version](https://img.shields.io/docker/v/11notes/traefik-labels/amd64-0.1.9?color=eb7a09) ![pulls](https://img.shields.io/docker/pulls/11notes/traefik-labels?color=2b75d6) ![activity](https://img.shields.io/github/commit-activity/m/11notes/docker-traefik-labels?color=c91cb8) ![commit-last](https://img.shields.io/github/last-commit/11notes/docker-traefik-labels?color=c91cb8)
 
 Run Traefik Labels based on Alpine Linux. Small, lightweight, secure and fast 🏔️
 
@@ -49,11 +49,11 @@ docker run --name traefik-rfc2136-demo \
   -l "traefik/http/services/demo.domain.com/loadbalancer/servers/0/url=http://fqdn-of-docker-node:8080" \
   -l "rfc2136/WAN/server=ns.domain.com" \
   -l "rfc2136/WAN/key=algo:name:secret" \
-  -l "rfc2136/WAN/nsupdate=update add foo.domain.com A 175.12.41.11" \
-  -l "rfc2136/WAN/nsupdate=update add foo.domain.com TXT \"hello from traefik-labels!\"" \
+  -l "rfc2136/WAN/nsupdate=update add foo.domain.com 300 A 175.12.41.11" \
+  -l "rfc2136/WAN/nsupdate=update add foo.domain.com 300 TXT \"hello from traefik-labels!\"" \
   -l "rfc2136/LAN/server=ns.domain.local" \
   -l "rfc2136/LAN/key=algo:name:secret" \
-  -l "rfc2136/LAN/nsupdate=update add foo.domain.local A 192.168.12.54" \
+  -l "rfc2136/LAN/nsupdate=update add foo.domain.local 300 A 192.168.12.54" \
   -d 11notes/nginx:stable
 ```
 
@@ -75,7 +75,7 @@ docker run --name traefik-rfc2136-demo \
 | `LABELS_TIMEOUT` | how many seconds after an interval the keys should stay till they expire in seconds | 30 |
 | `LABELS_WEBHOOK` | URL to call on each event or poll for each container |  |
 | `LABELS_WEBHOOK_AUTH_BASIC` | Basic authentication to use in the form of "username:password" for the webhook |  |
-| `LABELS_RFC2136_ONLY_UPDATE_ON_CHANGE` | Only update DNS entries if they are new or changed (will use dig on each call!) | false |
+| `LABELS_RFC2136_ONLY_UPDATE_ON_CHANGE` | Only update DNS entries if they are new or changed (will use dig on each call to the set server) | false |
 
 ## Parent image
 * [11notes/node:stable](https://hub.docker.com/r/11notes/node)

rootfs/labels/dig.js

@@ -8,6 +8,7 @@ exports.dig = async(resolver, type, record) => {
     dig.stdout.on('data', data => {io.stdout += (data.toString()).replace(/[\r\n]*$/ig, '')});
     dig.on('error', error => {reject(error)});
     dig.on('close', code =>{
+      elevenLogJSON('debug', {method:'dig()', params:arguments, io:io});
       switch(true){
         case /no servers could be reached/ig.test(io.stdout): io.stderr += io.stdout; break;
       }

rootfs/labels/main.js

@@ -192,7 +192,9 @@ class Labels{
     if(matches && matches.length >= 4){
       try{
         const record = await dig(server, matches[2], matches[1]);
-        return(matches[3].match(new RegExp(record, 'ig')));
+        const match = matches[3].match(new RegExp(record, 'ig'));
+        elevenLogJSON('debug', {method:'rfc2136KnownRecord()', params:arguments, record:{src:record, dst:match[3]}});
+        return(match);
       }catch(e){
         elevenLogJSON('error', e);
         return(false);

rootfs/labels/nsupdate.js

@@ -7,6 +7,7 @@ exports.nsupdate = async(server, key, commands) => {
   commands.push('quit');
 
   return(new Promise((resolve, reject) => {
+    elevenLogJSON('debug', {method:'nsupdate()', params:arguments});
     const nsupdate = spawn('/usr/bin/nsupdate', ['-y', key]);
     const io = {stdout:'', stderr:''};
     nsupdate.stderr.on('data', data => {io.stderr += data.toString()});