Refactoring all commands to throw BltException on failure.

src/Robo/BltTasks.php

@@ -5,6 +5,7 @@
 use Acquia\Blt\Robo\Common\ArrayManipulator;
 use Acquia\Blt\Robo\Common\IO;
 use Acquia\Blt\Robo\Config\ConfigAwareTrait;
+use Acquia\Blt\Robo\Exceptions\BltException;
 use Acquia\Blt\Robo\Inspector\InspectorAwareInterface;
 use Acquia\Blt\Robo\Inspector\InspectorAwareTrait;
 use Acquia\Blt\Robo\Tasks\LoadTasks;
@@ -159,7 +160,7 @@ protected function invokeHook($hook) {
         ->stopOnFail()
         ->run();
 
-      return $result;
+      return $result->getExitCode();
     }
     else {
       $this->say("Skipped $hook target hook. No hook is defined.");
@@ -215,26 +216,22 @@ protected function executeCommandInDrupalVm($command) {
    *   Indicates whether commands should be run in parallel or sequentially.
    *   Defaults to FALSE.
    *
-   * @return int
-   *   The exit code of the last executed command.
+   * @throws \Acquia\Blt\Robo\Exceptions\BltException
    */
   protected function executeCommandAgainstFilesets(array $filesets, $command, $parallel = FALSE) {
-    $exit_code = 0;
     foreach ($filesets as $fileset_id => $fileset) {
       if (!is_null($fileset) && iterator_count($fileset)) {
         $this->say("Iterating over fileset $fileset_id...");
         $files = iterator_to_array($fileset);
         $result = $this->executeCommandAgainstFiles($files, $command, $parallel);
         if (!$result->wasSuccessful()) {
-          return $result->getExitCode();
+          throw new BltException("Executing `$command` against $fileset_id returned a non-zero exit code.`");
         }
       }
       else {
         $this->logger->info("No files were found in fileset $fileset_id. Skipped.");
       }
     }
-
-    return $exit_code;
   }
 
   /**

src/Robo/Commands/Acsf/AcsfCommand.php

@@ -3,6 +3,7 @@
 namespace Acquia\Blt\Robo\Commands\Acsf;
 
 use Acquia\Blt\Robo\BltTasks;
+use Acquia\Blt\Robo\Exceptions\BltException;
 use Robo\Contract\VerbosityThresholdInterface;
 
 /**
@@ -65,7 +66,7 @@ protected function acsfHooksInitialize() {
   /**
    * Installs drupal/acsf via Composer.
    *
-   * @throws \Exception
+   * @throws \Acquia\Blt\Robo\Exceptions\BltException
    */
   protected function requireAcsf($acsfVersion) {
     $result = $this->taskExec("composer require 'drupal/acsf:{$acsfVersion}'")
@@ -85,11 +86,9 @@ protected function requireAcsf($acsfVersion) {
       }
       else {
         // @todo revert previous file chanages.
-        throw new \Exception("Unable to install drupal/acsf package.");
+        throw new BltException("Unable to install drupal/acsf package.");
       }
     }
-
-    return $result;
   }
 
 }

src/Robo/Commands/Blt/AliasCommand.php

@@ -3,6 +3,7 @@
 namespace Acquia\Blt\Robo\Commands\Blt;
 
 use Acquia\Blt\Robo\BltTasks;
+use Acquia\Blt\Robo\Exceptions\BltException;
 use Robo\Contract\VerbosityThresholdInterface;
 use Tivie\OS\Detector;
 use const Tivie\OS\MACOSX;
@@ -112,7 +113,11 @@ protected function getAliasInfo() {
   protected function updateAlias() {
     $alias_info = $this->getAliasInfo();
     $new_contents = str_replace($alias_info['alias'], $alias_info['canonical_alias'], $alias_info['contents']);
-    file_put_contents($alias_info['config_file'], $new_contents);
+    $bytes = file_put_contents($alias_info['config_file'], $new_contents);
+    if ($bytes) {
+      throw new BltException("Could not update BLT alias in {$alias_info['config_file']}.");
+    }
+
     $this->say("<info>The <comment>blt</comment> alias was updated in {$alias_info['config_file']}");
     $this->say("Execute <comment>source {$alias_info['config_file']}</comment> to update your terminal session.");
   }
@@ -154,10 +159,15 @@ protected function createOsxBashProfile() {
     if ($os_type == MACOSX) {
       $user = posix_getpwuid(posix_getuid());
       $home_dir = $user['dir'];
-      if (!file_exists($home_dir . '/.bash_profile')) {
-        $this->taskFilesystemStack()
-          ->touch($home_dir . '/.bash_profile')
+      $bash_profile = $home_dir . '/.bash_profile';
+      if (!file_exists($bash_profile)) {
+        $result = $this->taskFilesystemStack()
+          ->touch($bash_profile)
           ->run();
+
+        if (!$result->wasSuccessful()) {
+          throw new BltException("Could not create $bash_profile.");
+        }
       }
     }
   }

src/Robo/Commands/Blt/UpdateCommand.php

@@ -5,6 +5,7 @@
 use Acquia\Blt\Robo\BltTasks;
 use Acquia\Blt\Robo\Common\ComposerMunge;
 use Acquia\Blt\Robo\Common\YamlMunge;
+use Acquia\Blt\Robo\Exceptions\BltException;
 use Acquia\Blt\Update\Updater;
 use Robo\Contract\VerbosityThresholdInterface;
 use Symfony\Component\Filesystem\Filesystem;
@@ -42,19 +43,17 @@ public function initialize() {
    * @command internal:create-project
    */
   public function createProject() {
-    $result = $this->cleanUpProjectTemplate();
-    $result = $this->updateRootProjectFiles();
-    $result = $this->reInstallComposerPackages();
-    $result = $this->setProjectName();
-    $result = $this->initAndCommitRepo();
+    $this->cleanUpProjectTemplate();
+    $this->updateRootProjectFiles();
+    $this->reInstallComposerPackages();
+    $this->setProjectName();
+    $this->initAndCommitRepo();
     $exit_code = $this->invokeCommand('install-alias');
     $this->displayArt();
 
     $this->yell("Your new BLT-based project has been created in {$this->getConfigValue('repo.root')}.");
     $this->say("Please continue by following the \"Creating a new project with BLT\" instructions:");
     $this->say("<comment>http://blt.readthedocs.io/en/8.x/readme/creating-new-project/</comment>");
-
-    return $result->getExitCode();
   }
 
   /**
@@ -82,12 +81,10 @@ public function update() {
    * @return \Robo\Result
    */
   public function addToProject() {
-    $result = $this->reInstallComposerPackages();
+    $this->reInstallComposerPackages();
     $this->displayArt();
     $this->yell("BLT has been added to your project.");
     $this->say("It has added and modified various project files. Please inspect your repository.");
-
-    return $result;
   }
 
   /**
@@ -154,8 +151,9 @@ public function initAndCommitRepo() {
       ->printOutput(FALSE)
       ->run();
 
-    return $result;
-
+    if (!$result->wasSuccessful()) {
+      throw new BltException("Could not initialize new git repository.");
+    }
   }
 
   /**
@@ -179,7 +177,9 @@ protected function cleanUpProjectTemplate() {
       ->setVerbosityThreshold(VerbosityThresholdInterface::VERBOSITY_VERBOSE)
       ->run();
 
-    return $result;
+    if (!$result->wasSuccessful()) {
+      throw new BltException("Could not remove deprecated files provided by acquia/blt-project.");
+    }
   }
 
   /**
@@ -196,13 +196,19 @@ protected function reInstallComposerPackages() {
       ])
       ->setVerbosityThreshold(VerbosityThresholdInterface::VERBOSITY_VERBOSE)
       ->run();
+    if (!$result->wasSuccessful()) {
+      throw new BltException("Could not remove Composer files.");
+    }
+
     $result = $this->taskExecStack()
       ->dir($this->getConfigValue('repo.root'))
       ->exec("composer install --no-interaction --prefer-dist --ansi")
       ->detectInteractive()
       ->run();
 
-    return $result;
+    if (!$result->wasSuccessful()) {
+      throw new BltException("Could not install Composer requirements.");
+    }
   }
 
   /**
@@ -212,11 +218,9 @@ protected function reInstallComposerPackages() {
    */
   protected function updateRootProjectFiles() {
     $this->updateSchemaVersionFile();
-    $result = $this->rsyncTemplate();
-    $result = $this->mungeComposerJson();
-    $result = $this->mungeProjectYml();
-
-    return $result;
+    $this->rsyncTemplate();
+    $this->mungeComposerJson();
+    $this->mungeProjectYml();
   }
 
   /**
@@ -316,7 +320,9 @@ protected function rsyncTemplate() {
       ->setVerbosityThreshold(VerbosityThresholdInterface::VERBOSITY_VERBOSE)
       ->run();
 
-    return $result;
+    if (!$result->wasSuccessful()) {
+      throw new BltException("Could not rsync files from BLT into your repository.");
+    }
   }
 
   /**
@@ -329,7 +335,10 @@ protected function mungeComposerJson() {
     $project_composer_json = $this->getConfigValue('repo.root') . '/composer.json';
     $template_composer_json = $this->getConfigValue('blt.root') . '/template/composer.json';
     $munged_json = ComposerMunge::munge($project_composer_json, $template_composer_json);
-    file_put_contents($project_composer_json, $munged_json);
+    $bytes = file_put_contents($project_composer_json, $munged_json);
+    if (!$bytes) {
+      throw new BltException("Could not update $project_composer_json.");
+    }
   }
 
   /**
@@ -341,8 +350,12 @@ protected function mungeProjectYml() {
     $this->say("Merging BLT's <comment>project.yml</comment> template with your project's <comment>blt/project.yml</comment>...");
     // Values in the project's existing project.yml file will be preserved and
     // not overridden.
-    $munged_yaml = YamlMunge::munge($this->getConfigValue('blt.root') . '/template/blt/project.yml', $this->getConfigValue('blt.config-files.project'));
-    file_put_contents($this->getConfigValue('blt.config-files.project'), $munged_yaml);
+    $repo_project_yml = $this->getConfigValue('blt.config-files.project');
+    $munged_yaml = YamlMunge::munge($this->getConfigValue('blt.root') . '/template/blt/project.yml', $repo_project_yml);
+    $bytes = file_put_contents($this->getConfigValue('blt.config-files.project'), $munged_yaml);
+    if (!$bytes) {
+      throw new BltException("Could not update $repo_project_yml.");
+    }
   }
 
   /**
@@ -356,7 +369,9 @@ protected function setProjectName() {
       ->exec("{$this->getConfigValue('composer.bin')}/yaml-cli update:value {$this->getConfigValue('blt.config-files.project')} project.machine_name '$project_name'")
       ->setVerbosityThreshold(VerbosityThresholdInterface::VERBOSITY_VERBOSE)
       ->run();
-    return $result;
+    if (!$result->wasSuccessful()) {
+      throw new BltException("Could not set value for project.machine_name in {$this->getConfigValue('blt.config-files.project')}.");
+    }
   }
 
 }

src/Robo/Commands/Ci/CiCommand.php

@@ -3,6 +3,7 @@
 namespace Acquia\Blt\Robo\Commands\Ci;
 
 use Acquia\Blt\Robo\BltTasks;
+use Acquia\Blt\Robo\Exceptions\BltException;
 use Robo\Contract\VerbosityThresholdInterface;
 
 /**
@@ -22,9 +23,11 @@ public function pipelinesInit() {
       ->setVerbosityThreshold(VerbosityThresholdInterface::VERBOSITY_VERBOSE)
       ->run();
 
-    $this->say("<info>A pre-configured acquia-pipelines.yml file was copied to your repository root.</info>");
+    if (!$result->wasSuccessful()) {
+      throw new BltException("Could not initialize Acquia Pipelines configuration.");
+    }
 
-    return $result;
+    $this->say("<info>A pre-configured acquia-pipelines.yml file was copied to your repository root.</info>");
   }
 
   /**
@@ -39,9 +42,11 @@ public function travisInit() {
       ->setVerbosityThreshold(VerbosityThresholdInterface::VERBOSITY_VERBOSE)
       ->run();
 
-    $this->say("<info>A pre-configured .travis.yml file was copied to your repository root.</info>");
+    if (!$result->wasSuccessful()) {
+      throw new BltException("Could not initialize Travis CI configuration.");
+    }
 
-    return $result;
+    $this->say("<info>A pre-configured .travis.yml file was copied to your repository root.</info>");
   }
 
 }

src/Robo/Commands/Exceptions/BltException.php

@@ -0,0 +1,28 @@
+<?php
+
+namespace Acquia\Blt\Robo\Exceptions;
+
+/**
+ * Class BltException
+ * @package Acquia\Blt\Robo\Exceptions
+ */
+class BltException extends \Exception {
+
+  public function __construct(
+    $message = "",
+    $code = 0,
+    \Throwable $previous = NULL
+  ) {
+    parent::__construct($message, $code, $previous);
+
+    $this->transmitAnalytics();
+  }
+
+  /**
+   * Transmit anonymous data about Exception.
+   */
+  protected function transmitAnalytics() {
+    // Create new BltAnalyticsData class.
+  }
+
+}

src/Robo/Commands/Fix/PhpCbfCommand.php

@@ -35,9 +35,7 @@ public function phpcbfFileSet() {
 
     $bin = $this->getConfigValue('composer.bin');
     $command = "'$bin/phpcbf' --standard='{$this->standard}' '%s'";
-    $result = $this->executeCommandAgainstFilesets($filesets, $command);
-
-    return $result;
+    $this->executeCommandAgainstFilesets($filesets, $command);
   }
 
 }