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// SPDX-License-Identifier: GPL-3.0-or-later
package k8s_kubelet
import (
"net/http"
"net/http/httptest"
"os"
"testing"
"github.com/netdata/netdata/go/go.d.plugin/agent/module"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
var (
dataConfigJSON, _ = os.ReadFile("testdata/config.json")
dataConfigYAML, _ = os.ReadFile("testdata/config.yaml")
dataMetrics, _ = os.ReadFile("testdata/metrics.txt")
dataServiceAccountToken, _ = os.ReadFile("testdata/token.txt")
)
func Test_testDataIsValid(t *testing.T) {
for name, data := range map[string][]byte{
"dataConfigJSON": dataConfigJSON,
"dataConfigYAML": dataConfigYAML,
"dataMetrics": dataMetrics,
"dataServiceAccountToken": dataServiceAccountToken,
} {
require.NotNil(t, data, name)
}
}
func TestKubelet_ConfigurationSerialize(t *testing.T) {
module.TestConfigurationSerialize(t, &Kubelet{}, dataConfigJSON, dataConfigYAML)
}
func TestKubelet_Charts(t *testing.T) {
assert.NotNil(t, New().Charts())
}
func TestKubelet_Cleanup(t *testing.T) {
New().Cleanup()
}
func TestKubelet_Init(t *testing.T) {
assert.NoError(t, New().Init())
}
func TestKubelet_Init_ReadServiceAccountToken(t *testing.T) {
job := New()
job.TokenPath = "testdata/token.txt"
assert.NoError(t, job.Init())
assert.Equal(t, "Bearer "+string(dataServiceAccountToken), job.Request.Headers["Authorization"])
}
func TestKubelet_InitErrorOnCreatingClientWrongTLSCA(t *testing.T) {
job := New()
job.Client.TLSConfig.TLSCA = "testdata/tls"
assert.Error(t, job.Init())
}
func TestKubelet_Check(t *testing.T) {
ts := httptest.NewServer(
http.HandlerFunc(
func(w http.ResponseWriter, r *http.Request) {
_, _ = w.Write(dataMetrics)
}))
defer ts.Close()
job := New()
job.URL = ts.URL + "/metrics"
require.NoError(t, job.Init())
assert.NoError(t, job.Check())
}
func TestKubelet_Check_ConnectionRefused(t *testing.T) {
job := New()
job.URL = "http://127.0.0.1:38001/metrics"
require.NoError(t, job.Init())
assert.Error(t, job.Check())
}
func TestKubelet_Collect(t *testing.T) {
ts := httptest.NewServer(
http.HandlerFunc(
func(w http.ResponseWriter, r *http.Request) {
_, _ = w.Write(dataMetrics)
}))
defer ts.Close()
job := New()
job.URL = ts.URL + "/metrics"
require.NoError(t, job.Init())
require.NoError(t, job.Check())
expected := map[string]int64{
"apiserver_audit_requests_rejected_total": 0,
"apiserver_storage_data_key_generation_bucket_+Inf": 1,
"apiserver_storage_data_key_generation_bucket_10": 1,
"apiserver_storage_data_key_generation_bucket_10240": 1,
"apiserver_storage_data_key_generation_bucket_1280": 1,
"apiserver_storage_data_key_generation_bucket_160": 1,
"apiserver_storage_data_key_generation_bucket_20": 1,
"apiserver_storage_data_key_generation_bucket_20480": 1,
"apiserver_storage_data_key_generation_bucket_2560": 1,
"apiserver_storage_data_key_generation_bucket_320": 1,
"apiserver_storage_data_key_generation_bucket_40": 1,
"apiserver_storage_data_key_generation_bucket_40960": 1,
"apiserver_storage_data_key_generation_bucket_5": 6,
"apiserver_storage_data_key_generation_bucket_5120": 1,
"apiserver_storage_data_key_generation_bucket_640": 1,
"apiserver_storage_data_key_generation_bucket_80": 1,
"apiserver_storage_data_key_generation_failures_total": 0,
"apiserver_storage_envelope_transformation_cache_misses_total": 0,
"kubelet_docker_operations_create_container": 19,
"kubelet_docker_operations_errors_inspect_container": 14,
"kubelet_docker_operations_errors_remove_container": 4,
"kubelet_docker_operations_info": 2,
"kubelet_docker_operations_inspect_container": 223,
"kubelet_docker_operations_inspect_image": 110,
"kubelet_docker_operations_list_containers": 5157,
"kubelet_docker_operations_list_images": 195,
"kubelet_docker_operations_remove_container": 23,
"kubelet_docker_operations_start_container": 19,
"kubelet_docker_operations_stop_container": 23,
"kubelet_docker_operations_version": 472,
"kubelet_log_file_system_usage_kube-system_coredns-86c58d9df4-d22hv": 28672,
"kubelet_log_file_system_usage_kube-system_coredns-86c58d9df4-ks5dj": 28672,
"kubelet_log_file_system_usage_kube-system_etcd-minikube": 36864,
"kubelet_log_file_system_usage_kube-system_kube-addon-manager-minikube": 45056,
"kubelet_log_file_system_usage_kube-system_kube-apiserver-minikube": 36864,
"kubelet_log_file_system_usage_kube-system_kube-controller-manager-minikube": 57344,
"kubelet_log_file_system_usage_kube-system_kube-proxy-q2fvs": 28672,
"kubelet_log_file_system_usage_kube-system_kube-scheduler-minikube": 40960,
"kubelet_log_file_system_usage_kube-system_storage-provisioner": 24576,
"kubelet_node_config_error": 1,
"kubelet_pleg_relist_interval_05": 1013125,
"kubelet_pleg_relist_interval_09": 1016820,
"kubelet_pleg_relist_interval_099": 1032022,
"kubelet_pleg_relist_latency_05": 12741,
"kubelet_pleg_relist_latency_09": 16211,
"kubelet_pleg_relist_latency_099": 31234,
"kubelet_running_container": 9,
"kubelet_running_pod": 9,
"kubelet_runtime_operations_container_status": 90,
"kubelet_runtime_operations_create_container": 10,
"kubelet_runtime_operations_errors_container_status": 14,
"kubelet_runtime_operations_errors_remove_container": 4,
"kubelet_runtime_operations_exec_sync": 138,
"kubelet_runtime_operations_image_status": 25,
"kubelet_runtime_operations_list_containers": 2586,
"kubelet_runtime_operations_list_images": 195,
"kubelet_runtime_operations_list_podsandbox": 2562,
"kubelet_runtime_operations_podsandbox_status": 77,
"kubelet_runtime_operations_remove_container": 14,
"kubelet_runtime_operations_run_podsandbox": 9,
"kubelet_runtime_operations_start_container": 10,
"kubelet_runtime_operations_status": 279,
"kubelet_runtime_operations_stop_podsandbox": 14,
"kubelet_runtime_operations_version": 190,
"rest_client_requests_200": 177,
"rest_client_requests_201": 43,
"rest_client_requests_403": 2,
"rest_client_requests_409": 1,
"rest_client_requests_<error>": 8,
"rest_client_requests_GET": 37,
"rest_client_requests_PATCH": 177,
"rest_client_requests_POST": 8,
"token_count": 0,
"token_fail_count": 0,
"volume_manager_plugin_kubernetes.io/configmap_state_actual": 3,
"volume_manager_plugin_kubernetes.io/configmap_state_desired": 3,
"volume_manager_plugin_kubernetes.io/host-path_state_actual": 15,
"volume_manager_plugin_kubernetes.io/host-path_state_desired": 15,
"volume_manager_plugin_kubernetes.io/secret_state_actual": 4,
"volume_manager_plugin_kubernetes.io/secret_state_desired": 4,
}
assert.Equal(t, expected, job.Collect())
}
func TestKubelet_Collect_ReceiveInvalidResponse(t *testing.T) {
ts := httptest.NewServer(
http.HandlerFunc(
func(w http.ResponseWriter, r *http.Request) {
_, _ = w.Write([]byte("hello and goodbye"))
}))
defer ts.Close()
job := New()
job.URL = ts.URL + "/metrics"
require.NoError(t, job.Init())
assert.Error(t, job.Check())
}
func TestKubelet_Collect_Receive404(t *testing.T) {
ts := httptest.NewServer(
http.HandlerFunc(
func(w http.ResponseWriter, r *http.Request) {
w.WriteHeader(http.StatusNotFound)
}))
defer ts.Close()
job := New()
job.URL = ts.URL + "/metrics"
require.NoError(t, job.Init())
assert.Error(t, job.Check())
}
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