Environment variables configurable thru yaml file

src/Config/Environment.php

@@ -10,6 +10,11 @@
  */
 class Environment
 {
+    /**
+     * @var GlobalSection
+     */
+    private $stageConfig;
+
     /**
      * Regex pattern for detecting main branch.
      * The name of the main branch must be started from one of three prefixes:
@@ -31,6 +36,16 @@ class Environment
     const DEFAULT_ADMIN_FIRSTNAME = 'Admin';
     const DEFAULT_ADMIN_LASTNAME = 'Username';
 
+    /**
+     * Environment constructor.
+     * @param GlobalSection $stageConfig
+     */
+    public function __construct(
+        GlobalSection $stageConfig
+    ) {
+        $this->stageConfig = $stageConfig;
+    }
+
     /**
      * @var array
      */
@@ -60,7 +75,8 @@ public function getEnv(string $key)
      */
     public function get(string $key, $default = null)
     {
-        $value = $this->getEnv($key);
+        $envVarName = $this->getEnvironmentVariableName($key);
+        $value = $this->getEnv($envVarName);
         if (false === $value) {
             return $default;
         }
@@ -79,7 +95,7 @@ public function getRoutes(): array
             return $this->data['routes'];
         }
 
-        return $this->data['routes'] = $this->get('MAGENTO_CLOUD_ROUTES', []);
+        return $this->data['routes'] = $this->get(StageConfigInterface::VAR_ENV_ROUTES, []);
     }
 
     /**
@@ -93,7 +109,7 @@ public function getRelationships(): array
             return $this->data['relationships'];
         }
 
-        return $this->data['relationships'] = $this->get('MAGENTO_CLOUD_RELATIONSHIPS', []);
+        return $this->data['relationships'] = $this->get(StageConfigInterface::VAR_ENV_RELATIONSHIPS, []);
     }
 
     /**
@@ -120,7 +136,7 @@ public function getVariables(): array
             return $this->data['variables'];
         }
 
-        return $this->data['variables'] = $this->get('MAGENTO_CLOUD_VARIABLES', []);
+        return $this->data['variables'] = $this->get(StageConfigInterface::VAR_ENV_VARIABLES, []);
     }
 
     /**
@@ -132,7 +148,17 @@ public function getApplication(): array
             return $this->data['application'];
         }
 
-        return $this->data['application'] = $this->get('MAGENTO_CLOUD_APPLICATION', []);
+        return $this->data['application'] = $this->get(StageConfigInterface::VAR_ENV_APPLICATION, []);
+    }
+
+    /**
+     * Get environment variable name from .magento.env.yaml configuration file
+     * @param string $name
+     * @return string
+     */
+    protected function getEnvironmentVariableName(string $name): string
+    {
+        return $this->stageConfig->get($name);
     }
 
     /**

src/Config/Schema.php

@@ -155,6 +155,42 @@ public function getSchema()
                     StageConfigInterface::STAGE_DEPLOY => false,
                 ],
             ],
+            StageConfigInterface::VAR_ENV_RELATIONSHIPS => [
+                self::SCHEMA_TYPE => ['string'],
+                self::SCHEMA_STAGE => [
+                    StageConfigInterface::STAGE_GLOBAL
+                ],
+                self::SCHEMA_DEFAULT_VALUE => [
+                    StageConfigInterface::STAGE_GLOBAL => 'MAGENTO_CLOUD_RELATIONSHIPS',
+                ],
+            ],
+            StageConfigInterface::VAR_ENV_ROUTES => [
+                self::SCHEMA_TYPE => ['string'],
+                self::SCHEMA_STAGE => [
+                    StageConfigInterface::STAGE_GLOBAL
+                ],
+                self::SCHEMA_DEFAULT_VALUE => [
+                    StageConfigInterface::STAGE_GLOBAL => 'MAGENTO_CLOUD_ROUTES',
+                ],
+            ],
+            StageConfigInterface::VAR_ENV_VARIABLES => [
+                self::SCHEMA_TYPE => ['string'],
+                self::SCHEMA_STAGE => [
+                    StageConfigInterface::STAGE_GLOBAL
+                ],
+                self::SCHEMA_DEFAULT_VALUE => [
+                    StageConfigInterface::STAGE_GLOBAL => 'MAGENTO_CLOUD_VARIABLES',
+                ],
+            ],
+            StageConfigInterface::VAR_ENV_APPLICATION => [
+                self::SCHEMA_TYPE => ['string'],
+                self::SCHEMA_STAGE => [
+                    StageConfigInterface::STAGE_GLOBAL
+                ],
+                self::SCHEMA_DEFAULT_VALUE => [
+                    StageConfigInterface::STAGE_GLOBAL => 'MAGENTO_CLOUD_APPLICATION',
+                ],
+            ],
             StageConfigInterface::VAR_SKIP_HTML_MINIFICATION => [
                 self::SCHEMA_TYPE => ['boolean'],
                 self::SCHEMA_STAGE => [

src/Config/StageConfigInterface.php

@@ -36,6 +36,14 @@ interface StageConfigInterface
     const VAR_SKIP_HTML_MINIFICATION = 'SKIP_HTML_MINIFICATION';
     const VAR_SCD_MATRIX = 'SCD_MATRIX';
 
+    /**
+     * Environment variables.
+     */
+    const VAR_ENV_RELATIONSHIPS = 'ENV_RELATIONSHIPS';
+    const VAR_ENV_ROUTES = 'ENV_ROUTES';
+    const VAR_ENV_VARIABLES = 'ENV_VARIABLES';
+    const VAR_ENV_APPLICATION = 'ENV_APPLICATION';
+
     /**
      * Settings for deployment from git.
      */