From 38d7406cae16253f829d84a67f6beae9bd7134d0 Mon Sep 17 00:00:00 2001
From: LeaveMyYard <33721692+LeaveMyYard@users.noreply.github.com>
Date: Thu, 22 Jun 2023 13:59:06 +0300
Subject: Set executor per cluster for k8s API

---
 robusta_krr/core/integrations/kubernetes.py | 18 ++++++++----------
 1 file changed, 8 insertions(+), 10 deletions(-)

diff --git a/robusta_krr/core/integrations/kubernetes.py b/robusta_krr/core/integrations/kubernetes.py
index 8e7bd0d..3fa23f3 100644
--- a/robusta_krr/core/integrations/kubernetes.py
+++ b/robusta_krr/core/integrations/kubernetes.py
@@ -23,15 +23,13 @@ from robusta_krr.core.models.result import ResourceAllocations
 from robusta_krr.utils.configurable import Configurable
 
 
-# This executor will be running requests to Kubernetes API
-executor = ThreadPoolExecutor(6)
-
-
 class ClusterLoader(Configurable):
     def __init__(self, cluster: Optional[str], *args, **kwargs):
         super().__init__(*args, **kwargs)
 
         self.cluster = cluster
+        # This executor will be running requests to Kubernetes API
+        self.executor = ThreadPoolExecutor(6)
         self.api_client = (
             config.new_client_from_config(context=cluster, config_file=self.config.kubeconfig)
             if cluster is not None
@@ -103,7 +101,7 @@ class ClusterLoader(Configurable):
 
         loop = asyncio.get_running_loop()
         ret: V1PodList = await loop.run_in_executor(
-            executor,
+            self.executor,
             lambda: self.core.list_namespaced_pod(namespace=resource.metadata.namespace, label_selector=selector),
         )
         return [PodData(name=pod.metadata.name, deleted=False) for pod in ret.items]
@@ -125,7 +123,7 @@ class ClusterLoader(Configurable):
         self.debug(f"Listing deployments in {self.cluster}")
         loop = asyncio.get_running_loop()
         ret: V1DeploymentList = await loop.run_in_executor(
-            executor, lambda: self.apps.list_deployment_for_all_namespaces(watch=False)
+            self.executor, lambda: self.apps.list_deployment_for_all_namespaces(watch=False)
         )
         self.debug(f"Found {len(ret.items)} deployments in {self.cluster}")
 
@@ -141,7 +139,7 @@ class ClusterLoader(Configurable):
         self.debug(f"Listing statefulsets in {self.cluster}")
         loop = asyncio.get_running_loop()
         ret: V1StatefulSetList = await loop.run_in_executor(
-            executor, lambda: self.apps.list_stateful_set_for_all_namespaces(watch=False)
+            self.executor, lambda: self.apps.list_stateful_set_for_all_namespaces(watch=False)
         )
         self.debug(f"Found {len(ret.items)} statefulsets in {self.cluster}")
 
@@ -157,7 +155,7 @@ class ClusterLoader(Configurable):
         self.debug(f"Listing daemonsets in {self.cluster}")
         loop = asyncio.get_running_loop()
         ret: V1DaemonSetList = await loop.run_in_executor(
-            executor, lambda: self.apps.list_daemon_set_for_all_namespaces(watch=False)
+            self.executor, lambda: self.apps.list_daemon_set_for_all_namespaces(watch=False)
         )
         self.debug(f"Found {len(ret.items)} daemonsets in {self.cluster}")
 
@@ -173,7 +171,7 @@ class ClusterLoader(Configurable):
         self.debug(f"Listing jobs in {self.cluster}")
         loop = asyncio.get_running_loop()
         ret: V1JobList = await loop.run_in_executor(
-            executor, lambda: self.batch.list_job_for_all_namespaces(watch=False)
+            self.executor, lambda: self.batch.list_job_for_all_namespaces(watch=False)
         )
         self.debug(f"Found {len(ret.items)} jobs in {self.cluster}")
 
@@ -191,7 +189,7 @@ class ClusterLoader(Configurable):
         self.debug(f"Listing pods in {self.cluster}")
         loop = asyncio.get_running_loop()
         ret: V1PodList = await loop.run_in_executor(
-            executor, lambda: self.apps.list_pod_for_all_namespaces(watch=False)
+            self.executor, lambda: self.apps.list_pod_for_all_namespaces(watch=False)
         )
         self.debug(f"Found {len(ret.items)} pods in {self.cluster}")
 
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