Ensuring that all commands throw exceptions and return status.

src/Robo/BltTasks.php

@@ -146,7 +146,9 @@ protected function isCommandDisabled($command) {
    * @param string $hook
    *   The hook name.
    *
-   * @return \Robo\Result|int
+   * @return int
+   *
+   * @throws \Acquia\Blt\Robo\Exceptions\BltException
    */
   protected function invokeHook($hook) {
     if ($this->getConfig()->has("target-hooks.$hook.command")
@@ -161,7 +163,9 @@ protected function invokeHook($hook) {
         ->stopOnFail()
         ->run();
 
-      return $result->getExitCode();
+      if (!$result->wasSuccessful()) {
+        throw new BltException("Executing target-hook $hook failed.");
+      }
     }
     else {
       $this->say("Skipped $hook target hook. No hook is defined.");

src/Robo/Commands/Acsf/AcsfCommand.php

@@ -58,6 +58,10 @@ protected function acsfHooksInitialize() {
       ->setVerbosityThreshold(VerbosityThresholdInterface::VERBOSITY_VERBOSE)
       ->run();
 
+    if (!$result->wasSuccessful()) {
+      throw new BltException("Unable to copy ACSF scripts.");
+    }
+
     $this->say('New "factory-hooks/" directory created in repo root. Please commit this to your project.');
 
     return $result;
@@ -83,6 +87,9 @@ protected function requireAcsf($acsfVersion) {
           ->printOutput(TRUE)
           ->dir($this->getConfigValue('repo.root'))
           ->run();
+        if (!$result->wasSuccessful()) {
+          throw new BltException("Unable to install drupal/acsf package.");
+        }
       }
       else {
         // @todo revert previous file chanages.

src/Robo/Commands/Blt/AliasCommand.php

@@ -57,6 +57,11 @@ protected function createNewAlias() {
         ->append(TRUE)
         ->setVerbosityThreshold(VerbosityThresholdInterface::VERBOSITY_VERBOSE)
         ->run();
+
+      if (!$result->wasSuccessful()) {
+        throw new BltException("Unable to install BLT alias.");
+      }
+
       $this->say("<info>Added alias for blt to $config_file.</info>");
       $this->say("You may now use the <comment>blt</comment> command from anywhere within a BLT-generated repository.");
       $this->say("Restart your terminal session or run <comment>source $config_file</comment> to use the new command.");

src/Robo/Commands/Blt/DoctorCommand.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 Symfony\Component\Yaml\Yaml;
 
@@ -50,6 +51,10 @@ public function doctor() {
       $this->executeDoctorOnHost('');
     }
 
+    if (!$result->wasSuccessful()) {
+      throw new BltException("Unable to execute the `blt doctor` command.");
+    }
+
     return $result->getMessage();
   }
 

src/Robo/Commands/Deploy/DeployCommand.php

@@ -3,6 +3,7 @@
 namespace Acquia\Blt\Robo\Commands\Deploy;
 
 use Acquia\Blt\Robo\BltTasks;
+use Acquia\Blt\Robo\Exceptions\BltException;
 use Robo\Contract\VerbosityThresholdInterface;
 use Symfony\Component\Console\Input\InputOption;
 use Symfony\Component\Finder\Finder;
@@ -73,13 +74,17 @@ protected function checkDirty($options) {
       ->printOutput(FALSE)
       ->interactive(FALSE)
       ->run();
+    if (!$options['ignore-dirty'] && !$result->wasSuccessful()) {
+      throw new BltException("Unable to determine if local git repository is dirty.");
+    }
+
     $dirty = (bool) $result->getMessage();
     if ($dirty) {
       if ($options['ignore-dirty']) {
         $this->logger->warning("There are uncommitted changes on the source repository.");
       }
       else {
-        throw new \Exception("There are uncommitted changes, commit or stash these changes before deploying.");
+        throw new BltException("There are uncommitted changes, commit or stash these changes before deploying.");
       }
     }
   }

src/Robo/Commands/Saml/SimpleSamlPhpCommand.php

@@ -5,7 +5,6 @@
 use Acquia\Blt\Robo\BltTasks;
 use Acquia\Blt\Robo\Exceptions\BltException;
 use Robo\Contract\VerbosityThresholdInterface;
-use Robo\Result;
 use Symfony\Component\Console\Helper\FormatterHelper;
 
 /**
@@ -35,10 +34,6 @@ public function initialize() {
    * Initializes SimpleSAMLphp for project.
    *
    * @command simplesamlphp:init
-   *
-   * @return \Robo\Result
-   *
-   * @throws \Exception
    */
   public function initializeSimpleSamlPhp() {
     if (!$this->getInspector()->isSimpleSamlPhpInstalled()) {
@@ -51,18 +46,12 @@ public function initializeSimpleSamlPhp() {
       $this->say('SimpleSAMLphp has already been initialized by BLT.');
     }
     $this->outputCompleteSetupInstructions();
-    if (isset($result)) {
-      return $result;
-    }
-    return Result::EXITCODE_OK;
   }
 
   /**
    * Adds simplesamlphp_auth as a dependency.
    *
-   * @return \Robo\Result
-   *
-   * @throws \Exception
+   * @throws \Acquia\Blt\Robo\Exceptions\BltException
    */
   protected function requireModule() {
     $this->say('Adding SimpleSAMLphp Auth module as a dependency...');
@@ -76,16 +65,14 @@ protected function requireModule() {
       ->run();
 
     if (!$result->wasSuccessful()) {
-      throw new \Exception("Unable to install drupal/simplesamlphp_auth package.");
+      throw new BltException("Unable to install drupal/simplesamlphp_auth package.");
     }
   }
 
   /**
    * Copies configuration templates from SimpleSamlPHP to the repo root.
    *
    * @command simplesamlphp:config:init
-   *
-   * @return \Robo\Result
    */
   protected function initializeConfig() {
     $destinationDirectory = "{$this->repoRoot}/simplesamlphp/config";
@@ -97,14 +84,19 @@ protected function initializeConfig() {
       ->copy("{$this->bltRoot}/scripts/simplesamlphp/acquia_config.php", "${destinationDirectory}/acquia_config.php", TRUE)
       ->setVerbosityThreshold(VerbosityThresholdInterface::VERBOSITY_VERBOSE)
       ->run();
-    // @todo Check $result.
+    if (!$result->wasSuccessful()) {
+      throw new BltException("Unable to copy SimpleSamlPhp config files.");
+    }
 
-    $result = $this->taskWriteToFile("{$this->repoRoot}/simplesamlphp/config/config.php")
+    $config_file = "{$this->repoRoot}/simplesamlphp/config/config.php";
+    $result = $this->taskWriteToFile($config_file)
       ->text("include 'acquia_config.php';")
       ->append()
       ->setVerbosityThreshold(VerbosityThresholdInterface::VERBOSITY_VERBOSE)
       ->run();
-    // @todo Check $result.
+    if (!$result->wasSuccessful()) {
+      throw new BltException("Unable modify $config_file.");
+    }
 
     $this->say("Copying config files to {$this->repoRoot}/simplesamlphp/metadata...");
     $result = $this->taskFileSystemStack()
@@ -121,36 +113,37 @@ protected function initializeConfig() {
    * Copies custom config files to SimpleSamlPHP in deploy artifact.
    *
    * @command simplesamlphp:deploy:config
-   *
-   * @return \Robo\Result
    */
   public function simpleSamlPhpDeployConfig() {
     $this->say('Copying config files to the appropriate place in simplesamlphp library in the deploy artifact...');
     $result = $this->taskCopyDir(["{$this->repoRoot}/simplesamlphp" => "{$this->repoRoot}/deploy/vendor/simplesamlphp/simplesamlphp"])
       ->overwrite(TRUE)
       ->setVerbosityThreshold(VerbosityThresholdInterface::VERBOSITY_VERBOSE)
       ->run();
+    if (!$result->wasSuccessful()) {
+      throw new BltException("Unable to copy SimpleSamlPhp files into deployment artifact.");
+    }
 
     $result = $this->taskFileSystemStack()
       ->copy("{$this->bltRoot}/scripts/simplesamlphp/gitignore.txt", "{$this->repoRoot}/deploy/vendor/simplesamlphp/simplesamlphp/.gitignore", TRUE)
       ->setVerbosityThreshold(VerbosityThresholdInterface::VERBOSITY_VERBOSE)
       ->run();
 
-    return $result;
+    if (!$result->wasSuccessful()) {
+      throw new BltException("Unable to copy SimpleSamlPhp .gitignore into deployment artifact.");
+    }
   }
 
   /**
    * Sets value in project.yml to let targets know simplesamlphp is installed.
-   *
-   * @return \Robo\Result
    */
   protected function setSimpleSamlPhpInstalled() {
     $composerBin = $this->getConfigValue('composer.bin');
-    $projectConfigFile = $this->getConfigValue('blt.config-files.project');
-    $this->say("Updating ${projectConfigFile}...");
+    $project_yml = $this->getConfigValue('blt.config-files.project');
+    $this->say("Updating ${project_yml}...");
 
     $result = $this->taskExec("{$composerBin}/yaml-cli update:value")
-      ->arg("${projectConfigFile}")
+      ->arg($project_yml)
       ->arg('simplesamlphp')
       ->arg('TRUE')
       ->printOutput(TRUE)
@@ -159,13 +152,13 @@ protected function setSimpleSamlPhpInstalled() {
       ->setVerbosityThreshold(VerbosityThresholdInterface::VERBOSITY_VERBOSE)
       ->run();
 
-    return $result;
+    if (!$result->wasSuccessful()) {
+      throw new BltException("Unable to update $project_yml.");
+    }
   }
 
   /**
    * Creates a symlink from the docroot to the web accessible library dir.
-   *
-   * @return \Robo\Result
    */
   protected function symlinkDocrootToLibDir() {
     $docroot = $this->getConfigValue('docroot');
@@ -176,28 +169,33 @@ protected function symlinkDocrootToLibDir() {
       ->setVerbosityThreshold(VerbosityThresholdInterface::VERBOSITY_VERBOSE)
       ->run();
 
-    return $result;
+    if (!$result->wasSuccessful()) {
+      throw new BltException("Unable create symlink.");
+    }
   }
 
   /**
    * Copies customized config files into vendored SimpleSamlPHP.
    *
    * @command simplesamlphp:build:config
-   *
-   * @return \Robo\Result
    */
   public function simpleSamlPhpBuildConfig() {
     $this->say('Copying config files to the appropriate place in simplesamlphp library...');
     $result = $this->taskCopyDir(["{$this->repoRoot}/simplesamlphp" => "{$this->repoRoot}/vendor/simplesamlphp/simplesamlphp"])
       ->overwrite(TRUE)
       ->setVerbosityThreshold(VerbosityThresholdInterface::VERBOSITY_VERBOSE)
       ->run();
+    if (!$result->wasSuccessful()) {
+      throw new BltException("Unable to copy configuration into SimpleSamlPhp.");
+    }
+
     $result = $this->taskFileSystemStack()
       ->copy("{$this->bltRoot}/scripts/simplesamlphp/gitignore.txt", "{$this->repoRoot}/vendor/simplesamlphp/simplesamlphp/.gitignore", TRUE)
       ->setVerbosityThreshold(VerbosityThresholdInterface::VERBOSITY_VERBOSE)
       ->run();
-
-    return $result;
+    if (!$result->wasSuccessful()) {
+      throw new BltException("Unable to copy .gitignore into SimpleSamlPhp.");
+    }
   }
 
   /**

src/Robo/Commands/Setup/BuildCommand.php

@@ -3,6 +3,7 @@
 namespace Acquia\Blt\Robo\Commands\Setup;
 
 use Acquia\Blt\Robo\BltTasks;
+use Acquia\Blt\Robo\Exceptions\BltException;
 use Robo\Contract\VerbosityThresholdInterface;
 use Symfony\Component\Finder\Finder;
 
@@ -80,7 +81,9 @@ protected function setSitePermissions() {
     $taskFilesystemStack->setVerbosityThreshold(VerbosityThresholdInterface::VERBOSITY_VERBOSE);
     $result = $taskFilesystemStack->run();
 
-    return $result;
+    if (!$result->wasSuccessful()) {
+      throw new BltException("Unable to set permissions for site directories.");
+    }
   }
 
   /**
@@ -103,15 +106,12 @@ public function build() {
     }
 
     if ($this->getConfig()->has('simplesamlphp') && $this->getConfigValue('simplesamlphp')) {
-      $result = $this->taskExec($this->getConfigValue('composer.bin') . "/blt simplesamlphp:build:config")
-        ->detectInteractive()
-        ->dir($this->getConfigValue('repo.root'))
-        ->run();
+      $this->invokeCommand('simplesamlphp:build:config');
     }
 
-    $result = $this->invokeHook("post-setup-build");
+    $exit_code = $this->invokeHook("post-setup-build");
 
-    return $result;
+    return $exit_code;
   }
 
   /**

src/Robo/Commands/Setup/CloudHooksCommand.php

@@ -15,8 +15,11 @@ class CloudHooksCommand extends BltTasks {
    * @command setup:cloud-hooks
    */
   public function copy() {
+    $destination = $this->getConfigValue('repo.root') . '/hooks';
+    $this->say("Copying default Acquia cloud hooks into $destination...");
+    // This WILL overwrite files is source files are newer.
     $result = $this->taskCopyDir([
-      $this->getConfigValue('blt.root') . '/scripts/cloud-hooks/hooks' => $this->getConfigValue('repo.root') . '/hooks',
+      $this->getConfigValue('blt.root') . '/scripts/cloud-hooks/hooks' => $destination,
     ])
       ->run();
 

src/Robo/Commands/Setup/ConfigCommand.php

@@ -152,10 +152,15 @@ protected function checkFeaturesOverrides() {
             ->option('bundle', $bundle)
             ->option('format', 'json');
           $result = $task->printOutput(TRUE)->run();
+
+          if (!$result->wasSuccessful()) {
+            throw new BltException("Unable to determine if features in bundle $bundle are overridden.");
+          }
+
           $output = $result->getMessage();
           $features_overridden = preg_match('/(changed|conflicts|added)( *)$/', $output);
           if ($features_overridden) {
-            throw new \Exception("A feature in the $bundle bundle is overridden. You must re-export this feature to incorporate the changes.");
+            throw new BltException("A feature in the $bundle bundle is overridden. You must re-export this feature to incorporate the changes.");
           }
         }
       }