[5.x] Adding new balance strategy: single (#1473)

* Adding new balance strategy: single

* revert

* tweak

* Moving Behavior to Off / false

Author: dbpolito

src/AutoScaler.php

@@ -77,11 +77,18 @@ protected function poolsByQueue(Supervisor $supervisor)
     protected function timeToClearPerQueue(Supervisor $supervisor, Collection $pools)
     {
         return $pools->mapWithKeys(function ($pool, $queue) use ($supervisor) {
-            $size = $this->queue->connection($supervisor->options->connection)->readyNow($queue);
+            $queues = collect(explode(',', $queue))->map(function ($_queue) use ($supervisor) {
+                $size = $this->queue->connection($supervisor->options->connection)->readyNow($_queue);
+
+                return [
+                    'size' => $size,
+                    'time' => ($size * $this->metrics->runtimeForQueue($_queue)),
+                ];
+            });
 
             return [$queue => [
-                'size' => $size,
-                'time' => ($size * $this->metrics->runtimeForQueue($queue)),
+                'size' => $queues->sum('size'),
+                'time' => $queues->sum('time'),
             ]];
         });
     }

src/SupervisorOptions.php

@@ -265,7 +265,7 @@ public function balancing()
      */
     public function autoScaling()
     {
-        return $this->balance === 'auto';
+        return $this->balance !== 'simple';
     }
 
     /**

tests/Feature/SupervisorTest.php

@@ -95,6 +95,28 @@ public function test_supervisor_starts_multiple_pools_when_balancing()
         );
     }
 
+    public function test_supervisor_starts_pools_with_queues_when_balancing_is_off()
+    {
+        $options = $this->supervisorOptions();
+        $options->queue = 'first,second';
+        $this->supervisor = $supervisor = new Supervisor($options);
+
+        $supervisor->scale(2);
+        $this->assertCount(2, $supervisor->processes());
+
+        $host = MasterSupervisor::name();
+
+        $this->assertSame(
+            'exec '.$this->phpBinary.' worker.php redis --name=default --supervisor='.$host.':name --backoff=0 --max-time=0 --max-jobs=0 --memory=128 --queue="first,second" --sleep=3 --timeout=60 --tries=0 --rest=0',
+            $supervisor->processes()[0]->getCommandLine()
+        );
+
+        $this->assertSame(
+            'exec '.$this->phpBinary.' worker.php redis --name=default --supervisor='.$host.':name --backoff=0 --max-time=0 --max-jobs=0 --memory=128 --queue="first,second" --sleep=3 --timeout=60 --tries=0 --rest=0',
+            $supervisor->processes()[1]->getCommandLine()
+        );
+    }
+
     public function test_recent_jobs_are_correctly_maintained()
     {
         $id = Queue::push(new Jobs\BasicJob);
@@ -154,6 +176,7 @@ public function test_exceptions_are_caught_and_handled_during_loop()
     public function test_supervisor_information_is_persisted()
     {
         $this->supervisor = $supervisor = new Supervisor($options = $this->supervisorOptions());
+        $options->balance = 'simple';
         $options->queue = 'default,another';
 
         $supervisor->scale(2);
@@ -184,7 +207,8 @@ public function test_supervisor_repository_returns_null_if_no_supervisor_exists_
 
     public function test_processes_can_be_scaled_up()
     {
-        $this->supervisor = $supervisor = new Supervisor($this->supervisorOptions());
+        $this->supervisor = $supervisor = new Supervisor($options = $this->supervisorOptions());
+        $options->balance = 'simple';
 
         $supervisor->scale(2);
         $supervisor->loop();
@@ -198,6 +222,7 @@ public function test_processes_can_be_scaled_up()
     public function test_processes_can_be_scaled_down()
     {
         $this->supervisor = $supervisor = new Supervisor($options = $this->supervisorOptions());
+        $options->balance = 'simple';
         $options->sleep = 0;
 
         $supervisor->scale(3);
@@ -468,6 +493,7 @@ public function test_supervisor_processes_can_be_counted_externally()
     {
         SystemProcessCounter::$command = 'worker.php';
         $this->supervisor = $supervisor = new Supervisor($options = $this->supervisorOptions());
+        $options->balance = 'simple';
 
         $supervisor->scale(3);
         $supervisor->loop();
@@ -481,6 +507,7 @@ public function test_supervisor_does_not_start_workers_until_looped_and_active()
     {
         SystemProcessCounter::$command = 'worker.php';
         $this->supervisor = $supervisor = new Supervisor($options = $this->supervisorOptions());
+        $options->balance = 'simple';
 
         $supervisor->scale(3);