test(robot): add test case Test Longhorn components recovery

longhorn/longhorn#9536

Signed-off-by: Chris <chris.chien@suse.com>

e2e/keywords/backing_image.resource

@@ -22,3 +22,9 @@ Clean up backing image ${backing_image_name} from a disk
 
 Delete backing image ${backing_image_name}
     delete_backing_image    ${backing_image_name}
+
+Delete backing image managers and wait for recreation
+    delete_all_backing_image_managers_and_wait_for_recreation
+
+Wait backing image managers running
+    wait_all_backing_image_managers_running

e2e/keywords/longhorn.resource

@@ -66,3 +66,19 @@ Check all Longhorn CRD removed
 
 Install Longhorn
     install_longhorn_system
+
+Delete instance-manager of volume ${volume_id}
+    ${volume_name} =    generate_name_with_suffix    volume    ${volume_id}
+    ${node_name} =    get_volume_node    ${volume_name}
+    ${pod_name} =     get_instance_manager_on_node    ${node_name}
+    delete_pod    ${pod_name}    longhorn-system
+
+Delete instance-manager of deployment ${deployment_id} volume
+    ${deployment_name} =   generate_name_with_suffix    deployment    ${deployment_id}
+    ${volume_name} =    get_workload_volume_name    ${deployment_name}
+    ${node_name} =    get_volume_node    ${volume_name}
+    ${pod_name} =     get_instance_manager_on_node    ${node_name}
+    delete_pod    ${pod_name}    longhorn-system
+
+Wait for Longhorn components all running
+    wait_for_namespace_pods_running    longhorn-system

e2e/keywords/sharemanager.resource

@@ -20,3 +20,13 @@ Check sharemanager ${condition} using headless service
 
 Wait for all sharemanager to be deleted
     wait_for_sharemanagers_deleted
+
+Delete sharemanager of deployment ${deployment_id} and wait for recreation
+    ${deployment_name} =   generate_name_with_suffix    deployment    ${deployment_id}
+    ${volume_name} =    get_workload_volume_name    ${deployment_name}
+    delete_sharemanager_and_wait_for_recreation    ${volume_name}
+
+Wait for sharemanager of deployment ${deployment_id} running
+    ${deployment_name} =   generate_name_with_suffix    deployment    ${deployment_id}
+    ${volume_name} =    get_workload_volume_name    ${deployment_name}
+    wait_for_share_manager_running    ${volume_name}

e2e/keywords/workload.resource

@@ -187,5 +187,19 @@ Check ${workload_kind} ${workload_id} pod is ${expect_state} on another node
     Should Not Be Equal    ${node_name}    ${last_volume_node}
 
 Delete Longhorn ${workload_kind} ${workload_name} pod on node ${node_id}
+
     ${node_name} =    get_node_by_index    ${node_id}
-    delete_workload_pod_on_node    ${workload_name}    ${node_name}    longhorn-system
+
+    IF    '${workload_name}' == 'engine-image'
+        ${label_selector} =    Set Variable    longhorn.io/component=engine-image       
+    ELSE IF    '${workload_name}' == 'instance-manager'
+        ${label_selector} =    Set Variable    longhorn.io/component=instance-manager
+    ELSE
+        ${label_selector} =    Set Variable    ${EMPTY}
+    END
+    delete_workload_pod_on_node    ${workload_name}    ${node_name}    longhorn-system    ${label_selector}
+
+Delete Longhorn ${workload_kind} ${workload_name} pod
+    ${pod_name} =    get_workload_pod_name    ${workload_name}    longhorn-system
+    Log    ${pod_name}
+    delete_pod    ${pod_name}     longhorn-system

e2e/libs/backing_image/backing_image.py

@@ -1,6 +1,6 @@
 from backing_image.base import Base
 from backing_image.rest import Rest
-
+from backing_image.crd import CRD
 from strategy import LonghornOperationStrategy
 
 
@@ -30,3 +30,19 @@ def delete(self, bi_name):
 
     def cleanup_backing_images(self):
         return self.backing_image.cleanup_backing_images()
+
+    def delete_backing_image_manager(self, name):
+        self.backing_image = CRD()
+        return self.backing_image.delete_backing_image_manager(name)
+
+    def wait_all_backing_image_managers_running(self):
+        self.backing_image = CRD()
+        return self.backing_image.wait_all_backing_image_managers_running()
+
+    def wait_backing_image_manager_restart(self, name, last_creation_time):
+        self.backing_image = CRD()
+        self.backing_image.wait_backing_image_manager_restart(name, last_creation_time)
+
+    def list_backing_image_manager(self):
+        self.backing_image = CRD()
+        return self.backing_image.list_backing_image_manager()

e2e/libs/backing_image/base.py

@@ -30,3 +30,19 @@ def delete(self, bi_name):
     @abstractmethod
     def cleanup_backing_images(self):
         return NotImplemented
+
+    @abstractmethod
+    def wait_all_backing_image_managers_running(self):
+        return NotImplemented
+
+    @abstractmethod
+    def list_backing_image_manager(self):
+        return NotImplemented
+
+    @abstractmethod
+    def delete_backing_image_manager(self, name):
+        return NotImplemented
+
+    @abstractmethod
+    def wait_backing_image_manager_restart(self, name, last_creation_time):
+        return NotImplemented

e2e/libs/backing_image/crd.py

@@ -0,0 +1,91 @@
+from kubernetes import client
+from datetime import datetime
+from backing_image.base import Base
+
+from utility.utility import logging
+from utility.utility import get_retry_count_and_interval
+import time
+
+class CRD(Base):
+    def __init__(self):
+        self.obj_api = client.CustomObjectsApi()
+        self.retry_count, self.retry_interval = get_retry_count_and_interval()
+
+    def create(self, bi_name, source_type, url, expected_checksum):
+        return NotImplemented
+
+    def get(self, bi_name):
+        return NotImplemented
+
+    def all_disk_file_status_are_ready(self, bi_name):
+        return NotImplemented
+    def clean_up_backing_image_from_a_random_disk(self, bi_name):
+        return NotImplemented
+
+    def delete(self, bi_name):
+        return NotImplemented
+
+    def wait_for_backing_image_disk_cleanup(self, bi_name, disk_id):
+        return NotImplemented
+
+    def wait_for_backing_image_delete(self, bi_name):
+        return NotImplemented
+
+    def cleanup_backing_images(self):
+        return NotImplemented
+
+    def list_backing_image_manager(self):
+        label_selector = 'longhorn.io/component=backing-image-manager'
+        return self.obj_api.list_namespaced_custom_object(
+            group="longhorn.io",
+            version="v1beta2",
+            namespace="longhorn-system",
+            plural="backingimagemanagers",
+            label_selector=label_selector)
+
+    def delete_backing_image_manager(self, name):
+        logging(f"deleting backing image manager {name} ...")
+        self.obj_api.delete_namespaced_custom_object(
+            group="longhorn.io",
+            version="v1beta2",
+            namespace="longhorn-system",
+            plural="backingimagemanagers",
+            name=name
+        )
+
+    def wait_all_backing_image_managers_running(self):
+        for i in range(self.retry_count):
+            all_running = True
+            backing_image_managers = self.list_backing_image_manager()            
+            for backing_image_manager in backing_image_managers["items"]:
+                current_state = backing_image_manager["status"]["currentState"]
+                name = backing_image_manager["metadata"]["name"]
+                logging(f"backing image manager {name} currently in {current_state} state")
+                if current_state != "running":
+                    all_running = False
+            if all_running is True:
+                return
+            time.sleep(self.retry_interval)
+        assert False, f"Waiting all backing image manager in running state timeout"
+
+    def wait_backing_image_manager_restart(self, name, last_creation_time):
+        for i in range(self.retry_count):
+            time.sleep(self.retry_interval)            
+            try:
+                backing_image_manager = self.obj_api.get_namespaced_custom_object(
+                    group="longhorn.io",
+                    version="v1beta2",
+                    namespace="longhorn-system",
+                    plural="backingimagemanagers",
+                    name=name
+                    )
+            except Exception as e:
+                logging(f"Finding backing image manager {name} failed with error {e}")
+                continue
+
+            creation_time = backing_image_manager["metadata"]["creationTimestamp"]
+            fmt = "%Y-%m-%dT%H:%M:%SZ"
+            if datetime.strptime(creation_time, fmt) > datetime.strptime(last_creation_time, fmt):
+                return
+
+        assert False, f"Wait backing image manager {name} restart failed ..."

e2e/libs/backing_image/rest.py

@@ -110,3 +110,15 @@ def cleanup_backing_images(self):
                 break
             time.sleep(self.retry_interval)
         assert len(get_longhorn_client().list_backing_image()) == 0
+
+    def delete_backing_image_manager(self, name):
+        return NotImplemented
+
+    def wait_all_backing_image_managers_running(self):
+        return NotImplemented
+
+    def wait_backing_image_manager_restart(self, name, last_creation_time):
+        return NotImplemented
+
+    def list_backing_image_manager(self):
+        return NotImplemented

e2e/libs/k8s/k8s.py

@@ -1,12 +1,12 @@
 import time
-import subprocess
 import asyncio
-import os
 from kubernetes import client
 from kubernetes.client.rest import ApiException
 from workload.pod import create_pod
 from workload.pod import delete_pod
 from workload.pod import new_pod_manifest
+from workload.pod import wait_for_pod_status
+from workload.pod import get_pod
 from workload.constant import IMAGE_UBUNTU
 from utility.utility import subprocess_exec_cmd
 from utility.utility import logging
@@ -95,6 +95,7 @@ def check_instance_manager_pdb_not_exist(instance_manager):
     exec_cmd = ["kubectl", "get", "pdb", "-n", "longhorn-system"]
     res = subprocess_exec_cmd(exec_cmd)
     assert instance_manager not in res.decode('utf-8')
+
 def wait_namespaced_job_complete(job_label, namespace):
     retry_count, retry_interval = get_retry_count_and_interval()
     api = client.BatchV1Api()
@@ -170,3 +171,25 @@ def delete_namespace(namespace):
         api.delete_namespace(name=namespace)
     except ApiException as e:
         assert e.status == 404
+
+def wait_for_namespace_pods_running(namespace):    
+    retry_count, retry_interval = get_retry_count_and_interval()
+
+    for i in range(retry_count):        
+        time.sleep(retry_interval)
+        pod_list = list_namespace_pods(namespace)        
+        all_running = True
+
+        for pod in pod_list.items:
+            pod_name = pod.metadata.name
+            pod_status = pod.status.phase
+
+            if pod_status != "Running":
+                logging(f"Pod {pod_name} is in {pod_status} state, waiting...")
+                all_running = False
+
+        if all_running:
+            logging(f"All pods in namespace {namespace} are in Running state!")
+            return
+
+    assert False, f"wait all pod in namespace {namespace} running failed"

e2e/libs/keywords/backing_image_keywords.py

@@ -20,3 +20,23 @@ def delete_backing_image(self, bi_name):
 
     def cleanup_backing_images(self):
         self.backing_image.cleanup_backing_images()
+
+    def delete_backing_image_manager(self, name):
+        self.backing_image.delete_backing_image_manager(name)
+
+    def wait_all_backing_image_managers_running(self):
+        self.backing_image.wait_all_backing_image_managers_running()
+
+    def wait_backing_image_manager_restart(self, name, last_creation_time):
+        self.backing_image.wait_backing_image_manager_restart(name, last_creation_time)
+
+    def list_backing_image_manager(self):
+        return self.backing_image.list_backing_image_manager()
+
+    def delete_all_backing_image_managers_and_wait_for_recreation(self):
+        backing_image_managers = self.backing_image.list_backing_image_manager()
+        for backing_image in backing_image_managers["items"]:
+            name = backing_image["metadata"]["name"]
+            last_creation_time = backing_image["metadata"]["creationTimestamp"]
+            self.backing_image.delete_backing_image_manager(name)
+            self.backing_image.wait_backing_image_manager_restart(name, last_creation_time)

e2e/libs/keywords/k8s_keywords.py

@@ -9,6 +9,7 @@
 from k8s.k8s import check_node_cordoned
 from k8s.k8s import get_instance_manager_on_node
 from k8s.k8s import check_instance_manager_pdb_not_exist
+from k8s.k8s import wait_for_namespace_pods_running
 from utility.utility import logging
 from node import Node
 
@@ -78,3 +79,6 @@ def get_instance_manager_on_node(self, node_name):
 
     def check_instance_manager_pdb_not_exist(self, instance_manager):
         return check_instance_manager_pdb_not_exist(instance_manager)
+
+    def wait_for_namespace_pods_running(self, namespace):
+        return wait_for_namespace_pods_running(namespace)

e2e/libs/keywords/sharemanager_keywords.py

@@ -47,3 +47,15 @@ def wait_for_sharemanagers_deleted(self, name=[]):
                 time.sleep(retry_interval)
 
         assert AssertionError, f"Failed to wait for all sharemanagers to be deleted"
+
+    def delete_sharemanager(self, name):
+        return self.sharemanager.delete(name)
+
+    def delete_sharemanager_and_wait_for_recreation(self, name):        
+        sharemanager = self.sharemanager.get(name)
+        last_creation_time = sharemanager["metadata"]["creationTimestamp"]        
+        self.sharemanager.delete(name)
+        self.sharemanager.wait_for_restart(name, last_creation_time)
+
+    def wait_for_share_manager_running(self, name):
+        return self.sharemanager.wait_for_running(name)

e2e/libs/keywords/workload_keywords.py

@@ -46,9 +46,9 @@ def create_pod(self, pod_name, claim_name):
         logging(f'Creating pod {pod_name} using pvc {claim_name}')
         create_pod(new_busybox_manifest(pod_name, claim_name))
 
-    def delete_pod(self, pod_name):
+    def delete_pod(self, pod_name, namespace='default'):
         logging(f'Deleting pod {pod_name}')
-        delete_pod(pod_name)
+        delete_pod(pod_name, namespace)
 
     def cleanup_pods(self):
         cleanup_pods()
@@ -61,15 +61,15 @@ def check_pod_data_checksum(self, expected_checksum, pod_name, file_name):
         logging(f'Checking checksum for file {file_name} in pod {pod_name}')
         check_pod_data_checksum(expected_checksum, pod_name, file_name)
 
-    def delete_workload_pod_on_node(self, workload_name, node_name, namespace="default"):
-        pods = get_workload_pods(workload_name, namespace=namespace)
+    def delete_workload_pod_on_node(self, workload_name, node_name, namespace="default", label_selector=""):
+        pods = get_workload_pods(workload_name, namespace=namespace, label_selector=label_selector)
         for pod in pods:
             if pod.spec.node_name == node_name:
                 logging(f'Deleting pod {pod.metadata.name} on node {node_name}')
                 delete_pod(pod.metadata.name, namespace=namespace)
 
-    def get_workload_pod_name(self, workload_name):
-        return get_workload_pod_names(workload_name)[0]
+    def get_workload_pod_name(self, workload_name, namespace="default"):
+        return get_workload_pod_names(workload_name, namespace)[0]
 
     def get_workload_persistent_volume_claim_name(self, workload_name):
         return get_workload_persistent_volume_claim_name(workload_name)

e2e/libs/sharemanager/base.py

@@ -5,3 +5,19 @@ class Base(ABC):
     @abstractmethod
     def list(self):
         return NotImplemented
+
+    @abstractmethod
+    def get(self, name):
+        return NotImplemented
+
+    @abstractmethod
+    def delete(self, name):
+        return NotImplemented
+
+    @abstractmethod
+    def wait_for_running(self, name):
+        return NotImplemented
+
+    @abstractmethod
+    def wait_for_restart(self, name, last_creation_time):
+        return NotImplemented