Adding upstream version 1.34.4.

Signed-off-by: Daniel Baumann <daniel@debian.org>

plugins/inputs/kapacitor/kapacitor_test.go

@@ -0,0 +1,143 @@
+package kapacitor_test
+
+import (
+	"net/http"
+	"net/http/httptest"
+	"os"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+
+	"github.com/influxdata/telegraf/plugins/inputs/kapacitor"
+	"github.com/influxdata/telegraf/testutil"
+)
+
+func TestKapacitor(t *testing.T) {
+	kapacitorReturn, err := os.ReadFile("./testdata/kapacitor_return.json")
+	require.NoError(t, err)
+
+	fakeInfluxServer := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		if r.URL.Path == "/endpoint" {
+			if _, err := w.Write(kapacitorReturn); err != nil {
+				w.WriteHeader(http.StatusInternalServerError)
+				t.Error(err)
+				return
+			}
+		} else {
+			w.WriteHeader(http.StatusNotFound)
+		}
+	}))
+	defer fakeInfluxServer.Close()
+
+	plugin := &kapacitor.Kapacitor{
+		URLs: []string{fakeInfluxServer.URL + "/endpoint"},
+	}
+
+	var acc testutil.Accumulator
+	require.NoError(t, plugin.Gather(&acc))
+
+	require.Len(t, acc.Metrics, 63)
+
+	fields := map[string]interface{}{
+		"alloc_bytes":         int64(6950624),
+		"buck_hash_sys_bytes": int64(1446737),
+		"frees":               int64(129656),
+		"gc_cpu_fraction":     float64(0.006757149597237818),
+		"gc_sys_bytes":        int64(575488),
+		"heap_alloc_bytes":    int64(6950624),
+		"heap_idle_bytes":     int64(499712),
+		"heap_in_use_bytes":   int64(9166848),
+		"heap_objects":        int64(28070),
+		"heap_released_bytes": int64(0),
+		"heap_sys_bytes":      int64(9666560),
+		"last_gc_ns":          int64(1478813691405406556),
+		"lookups":             int64(40),
+		"mallocs":             int64(157726),
+		"mcache_in_use_bytes": int64(9600),
+		"mcache_sys_bytes":    int64(16384),
+		"mspan_in_use_bytes":  int64(105600),
+		"mspan_sys_bytes":     int64(114688),
+		"next_gc_ns":          int64(10996691),
+		"num_gc":              int64(4),
+		"other_sys_bytes":     int64(1985959),
+		"pause_total_ns":      int64(767327),
+		"stack_in_use_bytes":  int64(819200),
+		"stack_sys_bytes":     int64(819200),
+		"sys_bytes":           int64(14625016),
+		"total_alloc_bytes":   int64(13475176),
+	}
+
+	tags := map[string]string{
+		"kap_version": "1.1.0~rc2",
+		"url":         fakeInfluxServer.URL + "/endpoint",
+	}
+	acc.AssertContainsTaggedFields(t, "kapacitor_memstats", fields, tags)
+
+	acc.AssertContainsTaggedFields(t, "kapacitor",
+		map[string]interface{}{
+			"num_enabled_tasks": 5,
+			"num_subscriptions": 6,
+			"num_tasks":         5,
+		}, tags)
+}
+
+func TestMissingStats(t *testing.T) {
+	server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, _ *http.Request) {
+		if _, err := w.Write([]byte(`{}`)); err != nil {
+			w.WriteHeader(http.StatusInternalServerError)
+			t.Error(err)
+			return
+		}
+	}))
+	defer server.Close()
+
+	plugin := &kapacitor.Kapacitor{
+		URLs: []string{server.URL},
+	}
+
+	var acc testutil.Accumulator
+	require.NoError(t, plugin.Gather(&acc))
+
+	require.False(t, acc.HasField("kapacitor_memstats", "alloc_bytes"))
+	require.True(t, acc.HasField("kapacitor", "num_tasks"))
+}
+
+func TestErrorHandling(t *testing.T) {
+	badServer := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		if r.URL.Path == "/endpoint" {
+			if _, err := w.Write([]byte("not json")); err != nil {
+				w.WriteHeader(http.StatusInternalServerError)
+				t.Error(err)
+				return
+			}
+		} else {
+			w.WriteHeader(http.StatusNotFound)
+		}
+	}))
+	defer badServer.Close()
+
+	plugin := &kapacitor.Kapacitor{
+		URLs: []string{badServer.URL + "/endpoint"},
+	}
+
+	var acc testutil.Accumulator
+	require.NoError(t, plugin.Gather(&acc))
+	acc.WaitError(1)
+	require.Equal(t, uint64(0), acc.NMetrics())
+}
+
+func TestErrorHandling404(t *testing.T) {
+	badServer := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, _ *http.Request) {
+		w.WriteHeader(http.StatusNotFound)
+	}))
+	defer badServer.Close()
+
+	plugin := &kapacitor.Kapacitor{
+		URLs: []string{badServer.URL},
+	}
+
+	var acc testutil.Accumulator
+	require.NoError(t, plugin.Gather(&acc))
+	acc.WaitError(1)
+	require.Equal(t, uint64(0), acc.NMetrics())
+}