1 files changed, 154 insertions, 0 deletions
diff --git a/agents/kubevirt/fence_kubevirt.py b/agents/kubevirt/fence_kubevirt.py
new file mode 100755
index 0000000..8c27a03
--- /dev/null
+++ b/agents/kubevirt/fence_kubevirt.py
@@ -0,0 +1,154 @@
+#!@PYTHON@ -tt
+
+import sys
+import logging
+import atexit
+sys.path.append("@FENCEAGENTSLIBDIR@")
+from fencing import *
+from fencing import fail, fail_usage, run_delay, EC_STATUS, EC_FETCH_VM_UUID
+
+try:
+    from kubernetes.client.exceptions import ApiException
+except ImportError:
+    logging.error("Couldn\'t import kubernetes.client.exceptions.ApiException - not found or not accessible")
+
+def _get_namespace(options):
+    from kubernetes import config
+
+    ns = options.get("--namespace")
+    if ns is None:
+        ns = config.kube_config.list_kube_config_contexts()[1]['context']['namespace']
+
+    return ns
+
+def get_nodes_list(conn, options):
+    logging.debug("Starting list/monitor operation")
+    result = {}
+    try:
+        apiversion = options.get("--apiversion")
+        namespace = _get_namespace(options)
+        include_uninitialized = True
+        vm_api = conn.resources.get(api_version=apiversion, kind='VirtualMachine')
+        vm_list = vm_api.get(namespace=namespace)
+        for vm in vm_list.items:
+            result[vm.metadata.name] = ("", None)
+    except Exception as e:
+        logging.error("Exception when calling VirtualMachine list: %s", e)
+    return result
+
+def get_power_status(conn, options):
+    logging.debug("Starting get status operation")
+    try:
+        apiversion = options.get("--apiversion")
+        namespace = _get_namespace(options)
+        name = options.get("--plug")
+        vmi_api = conn.resources.get(api_version=apiversion,
+                                              kind='VirtualMachineInstance')
+        vmi = vmi_api.get(name=name, namespace=namespace)
+        return translate_status(vmi.status.phase)
+    except ApiException as e:
+        if e.status == 404:
+            try:
+                vm_api = conn.resources.get(api_version=apiversion, kind='VirtualMachine')
+                vm = vm_api.get(name=name, namespace=namespace)
+            except ApiException as e:
+                logging.error("VM %s doesn't exist", name)
+                fail(EC_FETCH_VM_UUID)
+            return "off"
+        logging.error("Failed to get power status, with API Exception: %s", e)
+        fail(EC_STATUS)
+    except Exception as e:
+        logging.error("Failed to get power status, with Exception: %s", e)
+        fail(EC_STATUS)
+
+def translate_status(instance_status):
+    if instance_status == "Running":
+        return "on"
+    return "unknown"
+
+def set_power_status(conn, options):
+    logging.debug("Starting set status operation")
+    try:
+        apiversion= options.get("--apiversion")
+        namespace = _get_namespace(options)
+        name = options.get("--plug")
+        action = 'start' if options["--action"] == "on" else 'stop'
+        virtctl_vm_action(conn, action, namespace, name, apiversion)
+    except Exception as e:
+        logging.error("Failed to set power status, with Exception: %s", e)
+        fail(EC_STATUS)
+
+def define_new_opts():
+    all_opt["namespace"] = {
+        "getopt" : ":",
+        "longopt" : "namespace",
+        "help" : "--namespace=[namespace]        Namespace of the KubeVirt machine",
+        "shortdesc" : "Namespace of the KubeVirt machine.",
+        "required" : "0",
+        "order" : 2
+    }
+    all_opt["kubeconfig"] = {
+        "getopt" : ":",
+        "longopt" : "kubeconfig",
+        "help" : "--kubeconfig=[kubeconfig]      Kubeconfig file path",
+        "shortdesc": "Kubeconfig file path",
+        "required": "0",
+        "order": 4
+    }
+    all_opt["apiversion"] = {
+        "getopt" : ":",
+        "longopt" : "apiversion",
+        "help" : "--apiversion=[apiversion]      Version of the KubeVirt API",
+        "shortdesc" : "Version of the KubeVirt API.",
+        "required" : "0",
+        "default" : "kubevirt.io/v1",
+        "order" : 5
+    }
+
+def virtctl_vm_action(conn, action, namespace, name, apiversion):
+    path = '/apis/subresources.{api_version}/namespaces/{namespace}/virtualmachines/{name}/{action}'
+    path = path.format(api_version=apiversion, namespace=namespace, name=name, action=action)
+    return conn.request('put', path, header_params={'accept': '*/*'})
+
+# Main agent method
+def main():
+    conn = None
+
+    device_opt = ["port", "namespace", "kubeconfig", "ssl_insecure", "no_password", "apiversion"]
+
+    atexit.register(atexit_handler)
+    define_new_opts()
+
+    all_opt["power_timeout"]["default"] = "40"
+
+    options = check_input(device_opt, process_input(device_opt))
+
+    docs = {}
+    docs["shortdesc"] = "Fence agent for KubeVirt"
+    docs["longdesc"] = "fence_kubevirt is an I/O Fencing agent for KubeVirt."
+    docs["vendorurl"] = "https://kubevirt.io/"
+    show_docs(options, docs)
+
+    run_delay(options)
+
+    # Disable insecure-certificate-warning message
+    if "--ssl-insecure" in options:
+        import urllib3
+        urllib3.disable_warnings(urllib3.exceptions.InsecureRequestWarning)
+
+    try:
+        from kubernetes import config
+        from openshift.dynamic import DynamicClient
+        kubeconfig = options.get('--kubeconfig')
+        k8s_client = config.new_client_from_config(config_file=kubeconfig)
+        conn = DynamicClient(k8s_client)
+    except ImportError:
+        logging.error("Couldn\'t import kubernetes.config or "
+                      "openshift.dynamic.DynamicClient - not found or not accessible")
+
+    # Operate the fencing device
+    result = fence_action(conn, options, set_power_status, get_power_status, get_nodes_list)
+    sys.exit(result)
+
+if __name__ == "__main__":
+	main()