Delay sending JOIN command until after MOTD finishes for IRC bot

Summary: Do JOIN in the protocol handler, after we receive 376 ("end of motd").

Test Plan: Ran bot, it joined a channel after receieving a 376 command.

Reviewers: moos3, codeblock, aran, jungejason, tuomaspelkonen

Reviewed By: moos3

CC: aran, moos3

Differential Revision: 855

src/infrastructure/daemon/irc/bot/PhabricatorIRCBot.php

@@ -35,6 +35,7 @@ final class PhabricatorIRCBot extends PhabricatorDaemon {
   private $readBuffer;
 
   private $conduit;
+  private $config;
 
   public function run() {
 
@@ -51,7 +52,6 @@ final class PhabricatorIRCBot extends PhabricatorDaemon {
 
     $server   = idx($config, 'server');
     $port     = idx($config, 'port', 6667);
-    $join     = idx($config, 'join', array());
     $handlers = idx($config, 'handlers', array());
     $pass     = idx($config, 'pass');
     $nick     = idx($config, 'nick', 'phabot');
@@ -59,15 +59,13 @@ final class PhabricatorIRCBot extends PhabricatorDaemon {
     $ssl      = idx($config, 'ssl', false);
     $nickpass = idx($config, 'nickpass');
 
+    $this->config = $config;
+
     if (!preg_match('/^[A-Za-z0-9_`[{}^|\]\\-]+$/', $nick)) {
       throw new Exception(
         "Nickname '{$nick}' is invalid!");
     }
 
-    if (!$join) {
-      throw new Exception("No channels to 'join' in config!");
-    }
-
     foreach ($handlers as $handler) {
       $obj = newv($handler, array($this));
       $this->handlers[] = $obj;
@@ -118,11 +116,11 @@ final class PhabricatorIRCBot extends PhabricatorDaemon {
     }
 
     $this->writeCommand('NICK', "{$nick}");
-    foreach ($join as $channel) {
+    $this->runSelectLoop();
-      $this->writeCommand('JOIN', "{$channel}");
   }
 
-    $this->runSelectLoop();
+  public function getConfig($key, $default = null) {
+    return idx($this->config, $key, $default);
   }
 
   private function runSelectLoop() {

src/infrastructure/daemon/irc/handler/base/PhabricatorIRCHandler.php

@@ -39,6 +39,10 @@ abstract class PhabricatorIRCHandler {
     return $this->bot->getConduit();
   }
 
+  final protected function getConfig($key, $default = null) {
+    return $this->bot->getConfig($key, $default);
+  }
+
   abstract public function receiveMessage(PhabricatorIRCMessage $message);
 
 }

src/infrastructure/daemon/irc/handler/protocol/PhabricatorIRCProtocolHandler.php

@@ -25,6 +25,15 @@ class PhabricatorIRCProtocolHandler extends PhabricatorIRCHandler {
 
   public function receiveMessage(PhabricatorIRCMessage $message) {
     switch ($message->getCommand()) {
+      case '376': // End of MOTD
+        $join = $this->getConfig('join');
+        if (!$join) {
+          throw new Exception("Not configured to join any channels!");
+        }
+        foreach ($join as $channel) {
+          $this->write('JOIN', $channel);
+        }
+        break;
       case 'PING':
         $this->write('PONG', $message->getRawData());
         break;