Display ip address of worker in `rq info` (#1463)

* `rq info` displays id address

add feature of #1386

* making redis < 5.0.0 compatible

* address -> ip_address

https://github.com/rq/rq/pull/1463#discussion_r633264327

rq/cli/helpers.py

@@ -131,7 +131,7 @@ def show_workers(queues, raw, by_queue, queue_class, worker_class):
 
         for worker in workers:
             queue_names = ', '.join(worker.queue_names())
-            name = '%s (%s %s)' % (worker.name, worker.hostname, worker.pid)
+            name = '%s (%s %s %s)' % (worker.name, worker.hostname, worker.ip_address, worker.pid)
             if not raw:
                 click.echo('%s: %s %s' % (name, state_symbol(worker.get_state()), queue_names))
             else:

rq/worker.py

@@ -176,13 +176,6 @@ class Worker:
 
         self.redis_server_version = None
 
-        if prepare_for_work:
-            self.hostname = socket.gethostname()
-            self.pid = os.getpid()
-        else:
-            self.hostname = None
-            self.pid = None
-
         self.job_class = backend_class(self, 'job_class', override=job_class)
         self.queue_class = backend_class(self, 'queue_class', override=queue_class)
         self.version = VERSION
@@ -225,6 +218,16 @@ class Worker:
 
         self.disable_default_exception_handler = disable_default_exception_handler
 
+        if prepare_for_work:
+            self.hostname = socket.gethostname()
+            self.pid = os.getpid()
+            connection.client_setname(self.name)
+            self.ip_address = [client['addr'] for client in connection.client_list() if client['name'] == self.name][0]
+        else:
+            self.hostname = None
+            self.pid = None
+            self.ip_address = None
+
         if isinstance(exception_handlers, (list, tuple)):
             for handler in exception_handlers:
                 self.push_exc_handler(handler)
@@ -301,6 +304,7 @@ class Worker:
                 'queues': queues,
                 'pid': self.pid,
                 'hostname': self.hostname,
+                'ip_address': self.ip_address,
                 'version': self.version,
                 'python_version': self.python_version,
             }
@@ -704,13 +708,15 @@ class Worker:
     def refresh(self):
         data = self.connection.hmget(
             self.key, 'queues', 'state', 'current_job', 'last_heartbeat',
-            'birth', 'failed_job_count', 'successful_job_count',
-            'total_working_time', 'current_job_working_time', 'hostname', 'pid', 'version', 'python_version',
+            'birth', 'failed_job_count', 'successful_job_count', 'total_working_time',
+            'current_job_working_time', 'hostname', 'ip_address', 'pid', 'version', 'python_version',
         )
         (queues, state, job_id, last_heartbeat, birth, failed_job_count,
-         successful_job_count, total_working_time, current_job_working_time, hostname, pid, version, python_version) = data
+         successful_job_count, total_working_time, current_job_working_time,
+         hostname, ip_address, pid, version, python_version) = data
         queues = as_text(queues)
         self.hostname = as_text(hostname)
+        self.ip_address = as_text(ip_address)
         self.pid = int(pid) if pid else None
         self.version = as_text(version)
         self.python_version = as_text(python_version)