Trace: Allow Custom Trace Providers #25

Author: iamacarpet

composer.json

@@ -26,6 +26,7 @@
     "extra": {
         "laravel": {
             "providers": [
+                "A1comms\\GaeSupportLaravel\\GaeSupportServiceProvider",
                 "A1comms\\GaeSupportLaravel\\Trace\\TraceServiceProvider"
             ]
         }

src/A1comms/GaeSupportLaravel/GaeSupportServiceProvider.php

@@ -0,0 +1,55 @@
+<?php
+
+namespace A1comms\GaeSupportLaravel;
+
+use Illuminate\Support\ServiceProvider;
+
+/**
+ * Class GaeSupportServiceProvider
+ *
+ * @package A1comms\GaeSupportLaravel
+ */
+class GaeSupportServiceProvider extends ServiceProvider
+{
+    /**
+     * Indicates if loading of the provider is deferred.
+     *
+     * @var bool
+     */
+    protected $defer = false;
+
+    /**
+     * Register bindings in the container.
+     *
+     * @return void
+     */
+    public function register()
+    {
+        $this->mergeConfigFrom(
+            __DIR__.'/../../config/gaesupport.php', 'gaesupport'
+        );
+    }
+
+    /**
+     * Bootstrap any application services.
+     *
+     * @return void
+     */
+    public function boot()
+    {
+        // Publish our config file when the user runs "artisan vendor:publish".
+        $this->publishes([
+            __DIR__.'/../../config/gaesupport.php' => config_path('gaesupport.php'),
+        ]);
+    }
+
+    /**
+     * Get the services provided by the provider.
+     *
+     * @return array
+     */
+    public function provides()
+    {
+        return array('gae-support');
+    }
+}

src/A1comms/GaeSupportLaravel/Trace/TraceServiceProvider.php

@@ -20,5 +20,9 @@ public function boot()
         //       Need to wait for rootSpan visibility to be changed to public.
         //       https://github.com/census-instrumentation/opencensus-php/issues/199
         Tracer::inSpan(['name' => 'laravel/bootstrap', 'startTime' => LARAVEL_START], function () {});
+
+        foreach (config('gaesupport.trace_providers', []) as $p) {
+            $p::load();
+        }
     }
 }

src/config/gaesupport.php

@@ -0,0 +1,21 @@
+<?php
+
+return [
+
+    /*
+    |--------------------------------------------------------------------------
+    | Trace Providers
+    |--------------------------------------------------------------------------
+    |
+    | This is an array of classes to register for the StackDriver Trace integration,
+    | defining runtime trace hooks via the opensensus PECL module,
+    | so code changes inside the application aren't required.
+    |
+    | These should implement OpenCensus\Trace\Integrations\IntegrationInterface
+    |
+    */
+
+    'trace_providers' => [
+
+    ],
+];