Automatically load override file if it exists

or ignore it using `--ignore-override`

Closes #16

CHANGELOG.md

@@ -1,4 +1,8 @@
-# `1.0.0` (unreleased)
+# `1.1.0` (unreleased)
+
+* Automatically load override file if it exists or ignore it using `--ignore-override`
+
+# `1.0.0`
 
 * Avoid duplicating edges when there is multiple extended services
 * Display extended services as components with inverted arrows

README.md

@@ -45,18 +45,21 @@ bin/dcv
 ## Usage
 
 ```
+Usage:
   render [options] [--] [<input-file>]
 
 Arguments:
   input-file                         Path to a docker compose file [default: "./docker-compose.yml"]
 
 Options:
+      --override=OVERRIDE            Tag of the override file to use [default: "override"]
   -o, --output-file=OUTPUT-FILE      Path to a output file (Only for "dot" and "image" output format) [default: "./docker-compose.dot" or "./docker-compose.png"]
   -m, --output-format=OUTPUT-FORMAT  Output format (one of: "dot", "image", "display") [default: "display"]
       --only=ONLY                    Display a graph only for a given services (multiple values allowed)
   -f, --force                        Overwrites output file if it already exists
       --no-volumes                   Do not display volumes
   -r, --horizontal                   Display a horizontal graph
+      --ignore-override              Ignore override file
 ```
 
 ## How to read the graph

src/application.php

@@ -16,6 +16,7 @@ $application = new Console\Application();
 $application->register('render')
     ->addArgument('input-file', Console\Input\InputArgument::OPTIONAL, 'Path to a docker compose file', getcwd().DIRECTORY_SEPARATOR.'docker-compose.yml')
 
+    ->addOption('override', null, Console\Input\InputOption::VALUE_REQUIRED, 'Tag of the override file to use', 'override')
     ->addOption('output-file', 'o', Console\Input\InputOption::VALUE_REQUIRED, 'Path to a output file (Only for "dot" and "image" output format)')
     ->addOption('output-format', 'm', Console\Input\InputOption::VALUE_REQUIRED, 'Output format (one of: "dot", "image", "display")', 'display')
     ->addOption('only', null, Console\Input\InputOption::VALUE_IS_ARRAY | Console\Input\InputOption::VALUE_REQUIRED, 'Display a graph only for a given services')
@@ -23,15 +24,19 @@ $application->register('render')
     ->addOption('force', 'f', Console\Input\InputOption::VALUE_NONE, 'Overwrites output file if it already exists')
     ->addOption('no-volumes', null, Console\Input\InputOption::VALUE_NONE, 'Do not display volumes')
     ->addOption('horizontal', 'r', Console\Input\InputOption::VALUE_NONE, 'Display a horizontal graph')
+    ->addOption('ignore-override', null, Console\Input\InputOption::VALUE_NONE, 'Ignore override file')
 
     ->setCode(function (Console\Input\InputInterface $input, Console\Output\OutputInterface $output) {
         $inputFile = $input->getArgument('input-file');
+        $inputFileExtension = pathinfo($inputFile, PATHINFO_EXTENSION);
+        $overrideFile = dirname($inputFile).DIRECTORY_SEPARATOR.basename($inputFile, '.'.$inputFileExtension).'.'.$input->getOption('override').'.'.$inputFileExtension;
+
         $outputFormat = $input->getOption('output-format');
         $outputFile = $input->getOption('output-file') ?: getcwd().DIRECTORY_SEPARATOR.'docker-compose.'.($outputFormat === 'dot' ? $outputFormat : 'png');
         $onlyServices = $input->getOption('only');
 
         if (in_array($outputFormat, ['dot', 'image', 'display']) === false) {
-            throw new Console\Exception\InvalidArgumentException(sprintf('Invalid output format "%s". It must be one of "dot", "png" or "display".', $outputFormat));
+            throw new Console\Exception\InvalidArgumentException(sprintf('Invalid output format "%s". It must be one of "dot", "image" or "display".', $outputFormat));
         }
 
         if ($outputFormat === 'display') {
@@ -45,6 +50,13 @@ $application->register('render')
         }
 
         $configuration = readConfiguration($inputFile);
+
+        if (!$input->getOption('ignore-override') && file_exists($overrideFile)) {
+            $override = readConfiguration($overrideFile);
+
+            $configuration = array_merge_recursive($configuration, $override);
+        }
+
         $services = fetchServices($configuration);
         $volumes = fetchVolumes($configuration);
         $networks = fetchNetworks($configuration);

src/functions.php

@@ -228,9 +228,15 @@ function makeVerticesAndEdges(Graph $graph, array $services, array $volumes, arr
             );
         }
 
+        $serviceLinks = [];
+
         foreach ($definition['links'] ?? [] as $link) {
             list($target, $alias) = explodeMapping($link);
 
+            $serviceLinks[$alias] = $target;
+        }
+
+        foreach ($serviceLinks as $alias => $target) {
             addRelation(
                 addService($graph, $target),
                 $graph->getVertex($service),
@@ -267,9 +273,17 @@ function makeVerticesAndEdges(Graph $graph, array $services, array $volumes, arr
         }
 
         if ($withVolumes === true) {
+            $serviceVolumes = [];
+
             foreach ($definition['volumes'] ?? [] as $volume) {
                 list($host, $container, $attr) = explodeMapping($volume);
 
+                $serviceVolumes[$container] = [$host, $attr];
+            }
+
+            foreach ($serviceVolumes as $container => $volume) {
+                list($host, $attr) = $volume;
+
                 if ($host[0] !== '.' && $host[0] !== DIRECTORY_SEPARATOR) {
                     $host = 'named: '.$host;
                 }