How to generate Symfony's parameters.yml file with Ansible

composer.json.diff

commit b73610f0e704700d75127e0f22da4038b1f47d20
Author: Paul Chubatyy <xobb@citylance.biz>
Date:   Thu Mar 24 22:48:54 2016 +0200

    Add composer script to generate params from ansible
    instead of parameters.yml.dist

diff --git a/composer.json b/composer.json
index 092503d..80582eb 100644
--- a/composer.json
+++ b/composer.json
@@ -71,7 +71,7 @@
             "SymfonyStandard\\Composer::hookRootPackageInstall"
         ],
         "post-install-cmd": [
-            "Incenteev\\ParameterHandler\\ScriptHandler::buildParameters",
+            "sh ansible/parameterhandler.sh",
             "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::buildBootstrap",
             "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::clearCache",
             "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::installAssets",
@@ -81,7 +81,7 @@
             "Mopa\\Bundle\\BootstrapBundle\\Composer\\ScriptHandler::postInstallSymlinkTwitterBootstrap"
         ],
         "post-update-cmd": [
-            "Incenteev\\ParameterHandler\\ScriptHandler::buildParameters",
+            "sh ansible/parameterhandler.sh",
             "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::buildBootstrap",
             "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::clearCache",
             "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::installAssets",
@@ -89,7 +89,8 @@
             "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::removeSymfonyStandardFiles",
             "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::prepareDeploymentTarget",
             "Mopa\\Bundle\\BootstrapBundle\\Composer\\ScriptHandler::postInstallSymlinkTwitterBootstrap"
-        ]
+        ],
+        "makeparams": "sh ansible/parameterhandler.sh"
     },
     "config": {
         "bin-dir": "bin",

parameterhandler.sh

#!/usr/bin/env bash

if [ ! -z "$SKIP_PARAM_GENERATION" ]; then
    echo "Skipping parameters.yml generation because of environment variable SKIP_PARAM_GENERATION"
    exit
fi

inventory=${SYMFONY_BUILD_ENV:-localhost}

# check if ansible exists
if hash ansible-playbook 2>/dev/null; then
    echo "Generating parameters.yml for ${inventory}"
    # run ansible playbook to generate parameters.yml
    (cd ansible && ansible-playbook -i inventories/${inventory} params.yml --connection local)
else
    echo "Please install Ansible before running me"
    exit 1
fi

params.yml

---
- hosts: jenkins
  connection: local
  tasks:
    - name: Generate parameters.yml in local installation
      template:
        src: parameters.yml
        dest: ../app/config/parameters.yml