Create ErrorHandler.php

Author: georgique

ErrorHandler.php

@@ -0,0 +1,79 @@
+<?php
+
+namespace georgique\yii2\jsonrpc;
+
+use Yii;
+use yii\base\UserException;
+use yii\web\Response;
+
+/**
+ * Class ErrorHandler
+ * This class is supposed to catch any unhandled errors and format them into JSON-RPC response.
+ * @autho George Shestayev [email protected]
+ * @package georgique\yii2\jsonrpc
+ */
+class ErrorHandler extends \yii\base\ErrorHandler
+{
+
+    /**
+     * Renders the exception.
+     * @param \Exception|\Error $exception the exception to be rendered.
+     */
+    protected function renderException($exception)
+    {
+        if (Yii::$app->has('response')) {
+            $response = Yii::$app->getResponse();
+            // reset parameters of response to avoid interference with partially created response data
+            // in case the error occurred while sending the response.
+            $response->isSent = false;
+            $response->stream = null;
+            $response->data = null;
+            $response->content = null;
+        } else {
+            $response = new Response();
+        }
+
+        $response->setStatusCode(200);
+        $response->data = $this->convertExceptionToArray($exception);
+        $response->send();
+    }
+
+    /**
+     * Converts an exception into an array.
+     * @param \Exception|\Error $exception the exception being converted
+     * @return array the array representation of the exception.
+     */
+    protected function convertExceptionToArray($exception)
+    {
+        if (!YII_DEBUG && !$exception instanceof Exception) {
+            $exception = new Exception('Internal error', JSON_RPC_ERROR_INTERNAL);
+        }
+
+        $errorArray = [
+            'code' => $exception->getCode(),
+            'message' => $exception->getMessage(),
+            'data' => []
+        ];
+        if (YII_DEBUG) {
+            $errorArray['data']['type'] = get_class($exception);
+            if (!$exception instanceof UserException) {
+                $errorArray['data']['file'] = $exception->getFile();
+                $errorArray['data']['line'] = $exception->getLine();
+                $errorArray['data']['stack-trace'] = explode("\n", $exception->getTraceAsString());
+                if ($exception instanceof \yii\db\Exception) {
+                    $errorArray['data']['error-info'] = $exception->errorInfo;
+                }
+            }
+        }
+        if (($prev = $exception->getPrevious()) !== null) {
+            $errorArray['data']['previous'] = $this->convertExceptionToArray($prev);
+        }
+
+        return [
+            'jsonrpc' => '2.0',
+            'error' => $errorArray,
+            'id' => ($exception instanceof Exception) ? $exception->id : null,
+        ];
+    }
+
+}