Added self-updating, better docker-compose control

* Added --self-update to check for and download new versions of
  the phar
* Added --only option which accepts a comma-separated list of
  services to pass to docker-compose pull/up
* Added --updated option to only pass the updated services to
  docker-compose pull/up

CHANGES

@@ -32,3 +32,12 @@
 
 - Bugfix: The lockfile is no longer removed automatically, but only if it was
   created by the current instance.
+
+**0.1.6**
+
+- Implemented self-updating (use -U or --self-update)
+
+**0.1.7**
+
+- Added `--only` option, to only pull for specific services
+- Added `--updated` option to only pull updated images

bin/freshdocker

@@ -5,6 +5,16 @@ require_once __DIR__."/../vendor/autoload.php";
 
 if (file_exists(__DIR__."/../src/version.php")) {
     require_once __DIR__."/../src/version.php";
+    if (PHAR::running()) {
+        require_once __DIR__."/../src/swup.php";
+        SWUP::register([
+            'url' => "https://files.noccylabs.info/.repo",
+            'channel' => 'beta',
+            'package' => 'fresh',
+            'version' => APP_VERSION,
+            'phar' => 'fresh.phar'
+        ]);
+    }
 } else {
     define("APP_VERSION", "DEV");
     define("BUILD_DATE", "src");

src/Configuration/ComposeConfiguration.php

@@ -9,6 +9,8 @@ class ComposeConfiguration
 
     private array $checks = [];
 
+    private array $services = [];
+
     public function __construct(string $configfile)
     {
         $this->loadComposeFile($configfile);
@@ -23,6 +25,10 @@ class ComposeConfiguration
             if ($image && !in_array($image,$this->checks)) {
                 $this->checks[] = $image;
             }
+            if (!array_key_exists($image, $this->services)) {
+                $this->services[$image] = [];
+            }
+            $this->services[$image][] = $name;
         }
     }
 
@@ -30,4 +36,16 @@ class ComposeConfiguration
     {
         return $this->checks;
     }
+
+    public function getServicesForImages(array $images)
+    {
+        $ret = [];
+        foreach ($images as $ref) {
+            $image = (string)$ref->ref;
+            if (array_key_exists($image, $this->services)) {
+                $ret = array_merge($ret, $this->services[$image]);
+            }
+        }
+        return array_unique($ret);
+    }
 }

src/ImageReference.php

@@ -53,4 +53,9 @@ class ImageReference
     {
         return $this->tag;
     }
+
+    public function __toString()
+    {
+        return sprintf("%s/%s:%s", $this->registry, $this->image, $this->tag);
+    }
 }

src/Refresher.php

@@ -21,6 +21,7 @@ namespace NoccyLabs\FreshDocker;
 
 */
 
+use GuzzleHttp\Exception\RequestException;
 use NoccyLabs\FreshDocker\State\Log;
 use NoccyLabs\FreshDocker\Configuration\ComposeConfiguration;
 use NoccyLabs\FreshDocker\Configuration\LocalConfiguration;
@@ -32,6 +33,7 @@ use NoccyLabs\FreshDocker\ImageReference;
 use NoccyLabs\FreshDocker\Registry\RegistryV2Client;
 use NoccyLabs\FreshDocker\State\PersistentState;
 use NoccyLabs\FreshDocker\State\Lockfile;
+use Phar;
 
 class Refresher
 {
@@ -48,6 +50,8 @@ class Refresher
             'path'  => [ 'd:', 'dir:', "Change working directory", "FRESH_DIR" ],
             'image' => [ 'i:', 'image:', "Check a specific image instead of images from config", "FRESH_IMAGE" ],
             'pull'  => [ null, 'pull', "Only pull if updated, don't up" ],
+            'only'  => [ null, 'only:', "Comma-separated list of services to docker-compose pull" ],
+            'updated' => [ null, 'updated', "Only pass updated services to docker-compose pull" ],
             'check' => [ null, 'check', "Only check for updates, set exit code" ],
             'prune' => [ null, 'prune', "Prune dangling images after pull and up" ],
             'write-state' => [ 'w', 'write-state', "Always write updated state (only useful with --check)", null, false ],
@@ -151,6 +155,13 @@ class Refresher
     {
         $tty = posix_isatty(STDOUT);
 
+        // add the "Self-Updating" options group if we are running in a phar
+        if (Phar::running()) {
+            self::$optionsMap['Self-Updating'] = [
+                'update'  => [ 'U', 'self-update', "Update to the latest version" ],                
+            ];
+        }
+
         printf("fresh.phar v%s (%s) - (c) 2022, NoccyLabs / GPL v3 or later\n", APP_VERSION, BUILD_DATE);
         printf("Check for updates to docker images or compose stacks.\n\n");
         printf("Usage:\n    %s [options]\n\n", basename($GLOBALS['argv'][0]));
@@ -215,7 +226,7 @@ class Refresher
             if ($updated !== null) {
                 $this->callHooks($updated, 'before');
                 $this->callScript('before');
-                $this->doUpdate();
+                $this->doUpdate($updated);
                 $this->callHooks($updated, 'after');
                 $this->callScript('after');
             }
@@ -385,8 +396,12 @@ class Refresher
             }
             $client = new RegistryV2Client($reg, $credentials);
 
-
-            $status = $client->getImageStatus($ref->getImage(), $ref->getTag());
+            try {
+                $status = $client->getImageStatus($ref->getImage(), $ref->getTag());
+            } catch (RequestException $e) {
+                $this->log->append(sprintf("  %s: registry returned error (%s)", $reg."/".$ref->getImage(), $e->getMessage()));
+                continue;
+            }
             $image = $reg."/".$status['image'].":".$status['tag'];
             $oldHash = $this->state->get($image);
             $newHash = $status['hash'];
@@ -408,13 +423,27 @@ class Refresher
         return empty($update) ? null : $update;
     }
 
-    public function doUpdate()
+    public function doUpdate(array $updated)
     {
+        if ($this->options['only']) {
+            $pullSpec = explode(",", $this->options['only']);
+            $this->log->append("Refreshing only: " . join(", ", $pullSpec));
+        } elseif ($this->options['updated'] && ($this->config instanceof ComposeConfiguration)) {
+            $pullSpec = $this->config->getServicesForImages($updated);
+            if (count($pullSpec) == 0) {
+                $this->log->append("Fatal: failed to resolve updated services to docker-compose pull");
+                return;
+            }
+            $this->log->append("Refreshing updated: " . join(", ", $pullSpec));
+        } else {
+            $pullSpec = null;
+        }
+
         $this->log->append("Pulling updated images...");
-        $this->exec("docker-compose pull --quiet");
+        $this->exec("docker-compose pull --quiet ". ($pullSpec?join(" ",array_map('escapeshellarg', $pullSpec)):'') );
         if (!$this->options['pull']) {
             $this->log->append("Refreshing updated containers...");
-            $this->exec("docker-compose up -d");
+            $this->exec("docker-compose up -d". ($pullSpec?join(" ",array_map('escapeshellarg', $pullSpec)):'') );
             if ($this->options['prune']) {
                 $this->log->append("Pruning dangling images...");
                 $this->exec("docker image prune -f");