fixes for new classes in newer version of guzzlehttp but still needing to support old methods

src/Flysystem/Adapter/FedoraAdapter.php

@@ -7,7 +7,6 @@ use League\Flysystem\AdapterInterface;
 use League\Flysystem\Adapter\Polyfill\NotSupportingVisibilityTrait;
 use League\Flysystem\Adapter\Polyfill\StreamedCopyTrait;
 use League\Flysystem\Config;
-use GuzzleHttp\Psr7\Header;
 use GuzzleHttp\Psr7\Response;
 use GuzzleHttp\Psr7\StreamWrapper;
 use Symfony\Component\HttpFoundation\File\MimeType\MimeTypeGuesserInterface;
@@ -144,7 +143,12 @@ class FedoraAdapter implements AdapterInterface {
     // NonRDFSource's are considered files.  Everything else is a
     // directory.
     $type = 'dir';
-    $links = Header::parse($response->getHeader('Link'));
+    if (class_exists(\GuzzleHttp\Psr7\Header::class)) {
+        $links = \GuzzleHttp\Psr7\Header::parse($response->getHeader('Link'));
+      }
+      else {
+        $links = \GuzzleHttp\Psr7\parse_header($response->getHeader('Link'));
+      }
     foreach ($links as $link) {
       if ($link['rel'] == 'type' && $link[0] == '<http://www.w3.org/ns/ldp#NonRDFSource>') {
         $type = 'file';
@@ -377,7 +381,12 @@ class FedoraAdapter implements AdapterInterface {
     $return = NULL;
     if ($response->getStatusCode() == 410) {
       $return = FALSE;
-      $link_headers = Header::parse($response->getHeader('Link'));
+      if (class_exists(\GuzzleHttp\Psr7\Header::class)) {
+        $link_headers = \GuzzleHttp\Psr7\Header::parse($response->getHeader('Link'));
+      }
+      else {
+        $link_headers = \GuzzleHttp\Psr7\parse_header($response->getHeader('Link'));
+      }
       if ($link_headers) {
         $tombstones = array_filter($link_headers, function ($o) {
           return (isset($o['rel']) && $o['rel'] == 'hasTombstone');

src/GeminiLookup.php

@@ -5,7 +5,6 @@ namespace Drupal\islandora;
 use Drupal\Core\Entity\EntityInterface;
 use Drupal\islandora\MediaSource\MediaSourceService;
 use Drupal\jwt\Authentication\Provider\JwtAuth;
-use GuzzleHttp\Psr7\Header;
 use GuzzleHttp\Client;
 use GuzzleHttp\Exception\RequestException;
 use Islandora\Crayfish\Commons\Client\GeminiClient;
@@ -136,7 +135,12 @@ class GeminiLookup {
         $urls['fedora'],
         ['allow_redirects' => FALSE, 'headers' => ['Authorization' => $token]]
       );
-      $links = Header::parse($head->getHeader("Link"));
+      if (class_exists(\GuzzleHttp\Psr7\Header::class)) {
+        $links = \GuzzleHttp\Psr7\Header::parse($head->getHeader('Link'));
+      }
+      else {
+        $links = \GuzzleHttp\Psr7\parse_header($head->getHeader('Link'));
+      }
       foreach ($links as $link) {
         if ($link['rel'] == 'describedby') {
           return trim($link[0], '<>');

tests/src/Kernel/FedoraAdapterTest.php

@@ -3,7 +3,6 @@
 namespace Drupal\Tests\islandora\Kernel;
 
 use Drupal\islandora\Flysystem\Adapter\FedoraAdapter;
-use GuzzleHttp\Psr7\Utils;
 use GuzzleHttp\Psr7\Response;
 use Islandora\Chullo\IFedoraApi;
 use League\Flysystem\Config;
@@ -52,7 +51,12 @@ class FedoraAdapterTest extends IslandoraKernelTestBase {
       ]);
     $prophecy->getHeader('Content-Type')->willReturn(['text/plain']);
     $prophecy->getHeader('Content-Length')->willReturn([strlen("DERP")]);
-    $prophecy->getBody()->willReturn(Utils::streamFor("DERP"));
+    if (class_exists(\GuzzleHttp\Psr7\Utils::class)) {
+      $prophecy->getBody()->willReturn(\GuzzleHttp\Psr7\Utils::streamFor("DERP"));
+    }
+    else {
+      $prophecy->getBody()->willReturn(\GuzzleHttp\Psr7\stream_for("DERP"));
+    }
     $response = $prophecy->reveal();
 
     $prophecy = $this->prophesize(IFedoraApi::class);
@@ -118,7 +122,12 @@ class FedoraAdapterTest extends IslandoraKernelTestBase {
       ]);
     $prophecy->getHeader('Content-Type')->willReturn(['text/plain']);
     $prophecy->getHeader('Content-Length')->willReturn([strlen("DERP")]);
-    $prophecy->getBody()->willReturn(Utils::streamFor("DERP"));
+    if (class_exists(\GuzzleHttp\Psr7\Utils::class)) {
+      $prophecy->getBody()->willReturn(\GuzzleHttp\Psr7\Utils::streamFor("DERP"));
+    }
+    else {
+      $prophecy->getBody()->willReturn(\GuzzleHttp\Psr7\stream_for("DERP"));
+    }
 
     $fedora_prophecy->getResourceHeaders('')->willReturn($prophecy->reveal());
 
@@ -610,7 +619,12 @@ class FedoraAdapterTest extends IslandoraKernelTestBase {
       ]);
     $prophecy->getHeader('Content-Type')->willReturn(['text/plain']);
     $prophecy->getHeader('Content-Length')->willReturn([strlen("DERP")]);
-    $prophecy->getBody()->willReturn(Utils::streamFor("DERP"));
+    if (class_exists(\GuzzleHttp\Psr7\Utils::class)) {
+      $prophecy->getBody()->willReturn(\GuzzleHttp\Psr7\Utils::streamFor("DERP"));
+    }
+    else {
+      $prophecy->getBody()->willReturn(\GuzzleHttp\Psr7\stream_for("DERP"));
+    }
     $response = $prophecy->reveal();
 
     $fedora_prophecy = $this->prophesize(IFedoraApi::class);