move code to another SpannerClient.php

Spanner/src/SpannerClient.php

@@ -140,6 +140,12 @@ public function __construct(array $config = [])
             'projectIdRequired' => true
         ];
 
+        if (isset($config['enable-gcp'])) {
+            $api = 'spanner';
+            $conf_path = "./../../$api.grpc.config";
+            $this->enableChonnectionManagement($conf_path, &$config);
+        }
+
         $this->connection = new Grpc($this->configureAuthentication($config));
         $this->returnInt64AsObject = $config['returnInt64AsObject'];
 
@@ -170,6 +176,14 @@ public function __construct(array $config = [])
         ]);
     }
 
+    private function enableChonnectionManagement($conf_path, $options) {
+        // TODO: move this function to gax.
+        $conf = new \Grpc\Gcp\ApiConfig();
+        $conf->mergeFromJsonString($string = file_get_contents($conf_path));
+        $config = \Google\Cloud\Grpc($conf);
+        $options['grpc_call_invoker'] = $config->callInvoker();
+    }
+
     /**
      * Get a Batch Client.
      *

Spanner/src/V1/Gapic/SpannerGapicClient.php

@@ -308,23 +308,10 @@ public static function parseName($formattedName, $template = null)
      */
     public function __construct(array $options = [])
     {
-        if (isset($options['enable-gcp'])) {
-            $api = 'spanner';
-            $conf_path = "./../../$api.grpc.config";
-            $this->enableChonnectionManagement($conf_path, &$options);
-        }
         $clientOptions = $this->buildClientOptions($options);
         $this->setClientOptions($clientOptions);
     }
 
-    private function enableChonnectionManagement($conf_path, $options) {
-        // TODO: move this function to gax.
-        $conf = new \Grpc\Gcp\ApiConfig();
-        $conf->mergeFromJsonString($string = file_get_contents($conf_path));
-        $config = \Google\Cloud\Grpc($conf);
-        $options['grpc_call_invoker'] = $config->callInvoker();
-    }
-
     /**
      * Creates a new session. A session can be used to perform
      * transactions that read and/or modify data in a Cloud Spanner database.

spanner.php

@@ -0,0 +1,6 @@
+<?php
+require('./vendor/autoload.php');
+$spanner = new SpannerClient(['projectId' => 'ddyihai-firestore',
+                               'enable_gcp' => true,
+                             ]);
+