initial commit

wait-for-db.php

@@ -0,0 +1,36 @@
+<?php
+
+function connect()
+{
+    $connection = getenv('DB_CONNECTION');
+    $host = getenv('DB_HOST');
+    $username = getenv('DB_USERNAME');
+    $password = getenv('DB_PASSWORD');
+    $database = getenv('DB_DATABASE');
+    $port = getenv('DB_PORT');
+    if ($connection === 'mysql') {
+        return mysqli_connect($host, $username, $password, $database, $port);
+    }
+    if ($connection === 'pgsql') {
+        return pg_connect('host=' . $host . ' port=' . $port . ' dbname=' . $database . ' user=' . $username . ' password=' . $password);
+    }
+    throw new Exception('unsupported connection type ' . $connection);
+}
+
+$conn = connect();
+
+$counter = 10;
+$count = 1;
+while (!$conn) {
+    echo("Waiting for Database... $count / $counter\n");
+    sleep(2);
+    $conn = connect();
+    $count++;
+    if ($count == $counter) {
+        echo("Database did not respond after $counter tries, giving up\n");
+        die(1);
+    }
+}
+
+echo "Database is up\n";
+?>