Added remote file streaming support to extract request handler

library/Solarium/QueryType/Extract/RequestBuilder.php

@@ -101,9 +101,16 @@ class RequestBuilder extends BaseRequestBuilder
         }
 
         // add file to request
-        $request->setFileUpload($query->getFile());
+        $file = $query->getFile();
+        if (preg_match('/^(http|https):\/\/(.+)/i', $file)) {
+            $request->addParam('stream.url', $file);
+        } else if (is_readable($file)) {
+            $request->setFileUpload($file);
             $request->addParam('resource.name', basename($query->getFile()));
             $request->addHeader('Content-Type: multipart/form-data');
+        } else {
+            throw new RuntimeException('Extract query file path/url invalid or not available');
+        }
 
         return $request;
     }

tests/Solarium/Tests/QueryType/Extract/RequestBuilderTest.php

@@ -84,6 +84,18 @@ class RequestBuilderTest extends \PHPUnit_Framework_TestCase
         );
     }
 
+    public function testGetUriWithStreamUrl()
+    {
+        $query = $this->query;
+        $query->setFile('http://solarium-project.org/');
+        $request = $this->builder->build($query);
+        $this->assertEquals(
+            'update/extract?omitHeader=true&param1=value1&wt=json&json.nl=flat&fmap.from-field=to-field'.
+            '&stream.url=http%3A%2F%2Fsolarium-project.org%2F',
+            $request->getUri()
+        );
+    }
+
     public function testDocumentFieldAndBoostParams()
     {
         $fields = array('field1' => 'value1', 'field2' => 'value2');