FIX Ensure queued job signature remains under 64 character limit (fixes Postgres error)

src/Search/Processors/SearchUpdateCommitJobProcessor.php

@@ -109,9 +109,7 @@ class SearchUpdateCommitJobProcessor implements QueuedJob
 
     public function getSignature()
     {
-        // There is only ever one commit job on the queue so the signature is consistent
-        // See QueuedJobService::queueJob() for the code that prevents duplication
-        return __CLASS__;
+        return sha1(get_class($this) . time() . mt_rand(0, 100000));
     }
 
     public function getTitle()

src/Solr/Reindex/Jobs/SolrReindexGroupQueuedJob.php

@@ -90,11 +90,6 @@ class SolrReindexGroupQueuedJob extends SolrReindexQueuedJobBase
         $this->group = $jobData->group;
     }
 
-    public function getSignature()
-    {
-        return md5(get_class($this) . time() . mt_rand(0, 100000));
-    }
-
     public function getTitle()
     {
         return sprintf(

src/Solr/Reindex/Jobs/SolrReindexQueuedJob.php

@@ -65,11 +65,6 @@ class SolrReindexQueuedJob extends SolrReindexQueuedJobBase
         $this->classes = $jobData->classes;
     }
 
-    public function getSignature()
-    {
-        return __CLASS__;
-    }
-
     public function getTitle()
     {
         return 'Solr Reindex Job';

src/Solr/Reindex/Jobs/SolrReindexQueuedJobBase.php

@@ -138,6 +138,11 @@ abstract class SolrReindexQueuedJobBase implements QueuedJob
         return QueuedJob::QUEUED;
     }
 
+    public function getSignature()
+    {
+        return sha1(get_class($this) . time() . mt_rand(0, 100000));
+    }
+
     public function addMessage($message)
     {
         $this->messages[] = $message;