Fixes acquia#1440: Cannot disable security-updates.

Author: grasmash

src/Robo/BltTasks.php

@@ -77,6 +77,12 @@ protected function invokeCommands(array $commands) {
    *   The exit code of the command.
    */
   protected function invokeCommand($command_name, array $args = []) {
+
+    // Skip invocation of disabled commands.
+    if ($this->isCommandDisabled($command_name)) {
+      return 0;
+    }
+
     /** @var \Robo\Application $application */
     $application = $this->getContainer()->get('application');
     $command = $application->find($command_name);
@@ -88,6 +94,40 @@ protected function invokeCommand($command_name, array $args = []) {
     return $returnCode;
   }
 
+  /**
+   * Gets an array of commands that have been configured to be disabled.
+   *
+   * @return array
+   *   A flat array of disabled commands.
+   */
+  protected function getDisabledCommands() {
+    $disabled_commands_config = $this->getConfigValue('disable-targets');
+    if ($disabled_commands_config) {
+      $disabled_commands = ArrayManipulator::flattenMultidimensionalArray($disabled_commands_config, ':');
+      return $disabled_commands;
+    }
+    return [];
+  }
+
+  /**
+   * Determines if a command has been disabled via disable-targets.
+   *
+   * @param string $command
+   *   The command name.
+   *
+   * @return bool
+   *   TRUE if the command is disabled.
+   */
+  protected function isCommandDisabled($command) {
+    $disabled_commands = $this->getDisabledCommands();
+    if (is_array($disabled_commands) && array_key_exists($command, $disabled_commands) && $disabled_commands[$command]) {
+      $this->output()->writeln("The $command command is disabled.");
+      return TRUE;
+    }
+
+    return FALSE;
+  }
+
   /**
    * Invokes a given 'target-hooks' hook, typically defined in project.yml.
    *

src/Robo/Hooks/CommandEventHook.php

@@ -2,13 +2,12 @@
 
 namespace Acquia\Blt\Robo\Hooks;
 
-use Acquia\Blt\Robo\Common\ArrayManipulator;
+use Acquia\Blt\Robo\BltTasks;
 use Acquia\Blt\Robo\Config\ConfigAwareTrait;
 use Psr\Log\LoggerAwareInterface;
 use Psr\Log\LoggerAwareTrait;
 use Robo\Contract\ConfigAwareInterface;
 use Robo\Contract\IOAwareInterface;
-use Robo\Tasks;
 use Symfony\Component\Console\Event\ConsoleCommandEvent;
 
 /**
@@ -17,7 +16,7 @@
  * These hooks typically use a Wizard to evaluate the validity of config or
  * state and guide the user toward resolving issues.
  */
-class CommandEventHook extends Tasks implements IOAwareInterface, ConfigAwareInterface, LoggerAwareInterface {
+class CommandEventHook extends BltTasks implements IOAwareInterface, ConfigAwareInterface, LoggerAwareInterface {
 
   use ConfigAwareTrait;
   use LoggerAwareTrait;
@@ -29,14 +28,8 @@ class CommandEventHook extends Tasks implements IOAwareInterface, ConfigAwareInt
    */
   public function skipDisabledCommands(ConsoleCommandEvent $event) {
     $command = $event->getCommand();
-    $disabled_commands_config = $this->getConfigValue('disable-targets');
-    if ($disabled_commands_config) {
-      $disabled_commands = ArrayManipulator::flattenMultidimensionalArray($disabled_commands_config, ':');
-      if (!empty($disabled_commands[$command->getName()]) && $disabled_commands[$command->getName()]) {
-        $event->disableCommand();
-        $this->output()->writeln("The {$command->getName()} command has been disabled. Skipping execution.");
-      }
+    if ($this->isCommandDisabled($command->getName())) {
+      $event->disableCommand();
     }
   }
-
 }