mirror of
https://github.com/VictoriaMetrics/VictoriaMetrics.git
synced 2024-12-05 01:01:09 +01:00
91a8afa172
Method `metrics()` now pre-allocates slices for labels and results from query responses. This reduces the number of allocations on the hot path for instant requests. Signed-off-by: hagen1778 <roman@victoriametrics.com>
619 lines
16 KiB
Go
619 lines
16 KiB
Go
package datasource
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import (
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"context"
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"fmt"
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"net/http"
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"net/http/httptest"
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"net/url"
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"reflect"
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"sort"
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"strconv"
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"strings"
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"testing"
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"time"
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"github.com/VictoriaMetrics/VictoriaMetrics/app/vmalert/utils"
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"github.com/VictoriaMetrics/VictoriaMetrics/lib/promauth"
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)
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var (
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ctx = context.Background()
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basicAuthName = "foo"
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basicAuthPass = "bar"
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baCfg = &promauth.BasicAuthConfig{
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Username: basicAuthName,
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Password: promauth.NewSecret(basicAuthPass),
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}
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query = "vm_rows"
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queryRender = "constantLine(10)"
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)
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func TestVMInstantQuery(t *testing.T) {
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mux := http.NewServeMux()
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mux.HandleFunc("/", func(_ http.ResponseWriter, _ *http.Request) {
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t.Errorf("should not be called")
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})
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c := -1
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mux.HandleFunc("/render", func(w http.ResponseWriter, request *http.Request) {
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c++
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switch c {
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case 8:
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w.Write([]byte(`[{"target":"constantLine(10)","tags":{"name":"constantLine(10)"},"datapoints":[[10,1611758343],[10,1611758373],[10,1611758403]]}]`))
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}
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})
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mux.HandleFunc("/api/v1/query", func(w http.ResponseWriter, r *http.Request) {
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c++
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if r.Method != http.MethodPost {
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t.Errorf("expected POST method got %s", r.Method)
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}
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if name, pass, _ := r.BasicAuth(); name != basicAuthName || pass != basicAuthPass {
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t.Errorf("expected %s:%s as basic auth got %s:%s", basicAuthName, basicAuthPass, name, pass)
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}
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if r.URL.Query().Get("query") != query {
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t.Errorf("expected %s in query param, got %s", query, r.URL.Query().Get("query"))
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}
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timeParam := r.URL.Query().Get("time")
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if timeParam == "" {
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t.Errorf("expected 'time' in query param, got nil instead")
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}
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if _, err := strconv.ParseInt(timeParam, 10, 64); err != nil {
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t.Errorf("failed to parse 'time' query param: %s", err)
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}
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switch c {
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case 0:
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conn, _, _ := w.(http.Hijacker).Hijack()
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_ = conn.Close()
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case 1:
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w.WriteHeader(500)
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case 2:
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w.Write([]byte("[]"))
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case 3:
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w.Write([]byte(`{"status":"error", "errorType":"type:", "error":"some error msg"}`))
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case 4:
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w.Write([]byte(`{"status":"unknown"}`))
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case 5:
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w.Write([]byte(`{"status":"success","data":{"resultType":"matrix"}}`))
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case 6:
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w.Write([]byte(`{"status":"success","data":{"resultType":"vector","result":[{"metric":{"__name__":"vm_rows","foo":"bar"},"value":[1583786142,"13763"]},{"metric":{"__name__":"vm_requests","foo":"baz"},"value":[1583786140,"2000"]}]}}`))
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case 7:
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w.Write([]byte(`{"status":"success","data":{"resultType":"scalar","result":[1583786142, "1"]}}`))
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}
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})
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srv := httptest.NewServer(mux)
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defer srv.Close()
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authCfg, err := baCfg.NewConfig(".")
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if err != nil {
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t.Fatalf("unexpected: %s", err)
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}
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s := NewVMStorage(srv.URL, authCfg, time.Minute, 0, false, srv.Client())
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p := datasourcePrometheus
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pq := s.BuildWithParams(QuerierParams{DataSourceType: string(p), EvaluationInterval: 15 * time.Second})
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ts := time.Now()
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expErr := func(err string) {
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if _, _, err := pq.Query(ctx, query, ts); err == nil {
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t.Fatalf("expected %q got nil", err)
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}
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}
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expErr("connection error") // 0
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expErr("invalid response status error") // 1
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expErr("response body error") // 2
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expErr("error status") // 3
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expErr("unknown status") // 4
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expErr("non-vector resultType error") // 5
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m, _, err := pq.Query(ctx, query, ts) // 6 - vector
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if err != nil {
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t.Fatalf("unexpected %s", err)
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}
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if len(m) != 2 {
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t.Fatalf("expected 2 metrics got %d in %+v", len(m), m)
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}
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expected := []Metric{
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{
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Labels: []Label{{Value: "vm_rows", Name: "__name__"}, {Value: "bar", Name: "foo"}},
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Timestamps: []int64{1583786142},
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Values: []float64{13763},
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},
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{
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Labels: []Label{{Value: "vm_requests", Name: "__name__"}, {Value: "baz", Name: "foo"}},
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Timestamps: []int64{1583786140},
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Values: []float64{2000},
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},
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}
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metricsEqual(t, m, expected)
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m, req, err := pq.Query(ctx, query, ts) // 7 - scalar
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if err != nil {
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t.Fatalf("unexpected %s", err)
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}
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if req == nil {
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t.Fatalf("expected request to be non-nil")
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}
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if len(m) != 1 {
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t.Fatalf("expected 1 metrics got %d in %+v", len(m), m)
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}
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expected = []Metric{
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{
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Timestamps: []int64{1583786142},
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Values: []float64{1},
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},
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}
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if !reflect.DeepEqual(m, expected) {
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t.Fatalf("unexpected metric %+v want %+v", m, expected)
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}
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gq := s.BuildWithParams(QuerierParams{DataSourceType: string(datasourceGraphite)})
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m, _, err = gq.Query(ctx, queryRender, ts) // 8 - graphite
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if err != nil {
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t.Fatalf("unexpected %s", err)
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}
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if len(m) != 1 {
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t.Fatalf("expected 1 metric got %d in %+v", len(m), m)
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}
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exp := []Metric{
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{
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Labels: []Label{{Value: "constantLine(10)", Name: "name"}},
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Timestamps: []int64{1611758403},
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Values: []float64{10},
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},
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}
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metricsEqual(t, m, exp)
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}
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func metricsEqual(t *testing.T, gotM, expectedM []Metric) {
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for i, exp := range expectedM {
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got := gotM[i]
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gotTS, expTS := got.Timestamps, exp.Timestamps
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if !reflect.DeepEqual(gotTS, expTS) {
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t.Fatalf("unexpected timestamps %+v want %+v", gotTS, expTS)
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}
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gotV, expV := got.Values, exp.Values
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if !reflect.DeepEqual(gotV, expV) {
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t.Fatalf("unexpected values %+v want %+v", gotV, expV)
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}
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sort.Slice(got.Labels, func(i, j int) bool {
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return got.Labels[i].Name < got.Labels[j].Name
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})
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sort.Slice(exp.Labels, func(i, j int) bool {
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return exp.Labels[i].Name < exp.Labels[j].Name
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})
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if !reflect.DeepEqual(exp.Labels, got.Labels) {
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t.Fatalf("unexpected labels %+v want %+v", got.Labels, exp.Labels)
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}
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}
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}
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func TestVMRangeQuery(t *testing.T) {
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mux := http.NewServeMux()
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mux.HandleFunc("/", func(_ http.ResponseWriter, _ *http.Request) {
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t.Errorf("should not be called")
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})
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c := -1
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mux.HandleFunc("/api/v1/query_range", func(w http.ResponseWriter, r *http.Request) {
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c++
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if r.Method != http.MethodPost {
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t.Errorf("expected POST method got %s", r.Method)
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}
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if name, pass, _ := r.BasicAuth(); name != basicAuthName || pass != basicAuthPass {
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t.Errorf("expected %s:%s as basic auth got %s:%s", basicAuthName, basicAuthPass, name, pass)
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}
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if r.URL.Query().Get("query") != query {
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t.Errorf("expected %s in query param, got %s", query, r.URL.Query().Get("query"))
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}
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startTS := r.URL.Query().Get("start")
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if startTS == "" {
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t.Errorf("expected 'start' in query param, got nil instead")
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}
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if _, err := strconv.ParseInt(startTS, 10, 64); err != nil {
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t.Errorf("failed to parse 'start' query param: %s", err)
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}
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endTS := r.URL.Query().Get("end")
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if endTS == "" {
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t.Errorf("expected 'end' in query param, got nil instead")
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}
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if _, err := strconv.ParseInt(endTS, 10, 64); err != nil {
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t.Errorf("failed to parse 'end' query param: %s", err)
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}
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step := r.URL.Query().Get("step")
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if step != "15s" {
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t.Errorf("expected 'step' query param to be 15s; got %q instead", step)
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}
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switch c {
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case 0:
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w.Write([]byte(`{"status":"success","data":{"resultType":"matrix","result":[{"metric":{"__name__":"vm_rows"},"values":[[1583786142,"13763"]]}]}}`))
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}
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})
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srv := httptest.NewServer(mux)
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defer srv.Close()
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authCfg, err := baCfg.NewConfig(".")
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if err != nil {
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t.Fatalf("unexpected: %s", err)
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}
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s := NewVMStorage(srv.URL, authCfg, time.Minute, *queryStep, false, srv.Client())
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pq := s.BuildWithParams(QuerierParams{DataSourceType: string(datasourcePrometheus), EvaluationInterval: 15 * time.Second})
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_, err = pq.QueryRange(ctx, query, time.Now(), time.Time{})
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expectError(t, err, "is missing")
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_, err = pq.QueryRange(ctx, query, time.Time{}, time.Now())
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expectError(t, err, "is missing")
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start, end := time.Now().Add(-time.Minute), time.Now()
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m, err := pq.QueryRange(ctx, query, start, end)
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if err != nil {
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t.Fatalf("unexpected %s", err)
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}
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if len(m) != 1 {
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t.Fatalf("expected 1 metric got %d in %+v", len(m), m)
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}
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expected := Metric{
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Labels: []Label{{Value: "vm_rows", Name: "__name__"}},
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Timestamps: []int64{1583786142},
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Values: []float64{13763},
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}
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if !reflect.DeepEqual(m[0], expected) {
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t.Fatalf("unexpected metric %+v want %+v", m[0], expected)
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}
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gq := s.BuildWithParams(QuerierParams{DataSourceType: string(datasourceGraphite)})
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_, err = gq.QueryRange(ctx, queryRender, start, end)
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expectError(t, err, "is not supported")
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}
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func TestRequestParams(t *testing.T) {
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authCfg, err := baCfg.NewConfig(".")
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if err != nil {
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t.Fatalf("unexpected: %s", err)
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}
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query := "up"
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timestamp := time.Date(2001, 2, 3, 4, 5, 6, 0, time.UTC)
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testCases := []struct {
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name string
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queryRange bool
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vm *VMStorage
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checkFn func(t *testing.T, r *http.Request)
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}{
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{
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"prometheus path",
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false,
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&VMStorage{
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dataSourceType: datasourcePrometheus,
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},
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func(t *testing.T, r *http.Request) {
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checkEqualString(t, "/api/v1/query", r.URL.Path)
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},
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},
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{
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"prometheus prefix",
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false,
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&VMStorage{
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dataSourceType: datasourcePrometheus,
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appendTypePrefix: true,
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},
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func(t *testing.T, r *http.Request) {
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checkEqualString(t, "/prometheus/api/v1/query", r.URL.Path)
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},
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},
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{
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"prometheus range path",
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true,
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&VMStorage{
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dataSourceType: datasourcePrometheus,
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},
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func(t *testing.T, r *http.Request) {
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checkEqualString(t, "/api/v1/query_range", r.URL.Path)
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},
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},
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{
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"prometheus range prefix",
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true,
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&VMStorage{
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dataSourceType: datasourcePrometheus,
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appendTypePrefix: true,
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},
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func(t *testing.T, r *http.Request) {
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checkEqualString(t, "/prometheus/api/v1/query_range", r.URL.Path)
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},
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},
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{
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"graphite path",
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false,
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&VMStorage{
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dataSourceType: datasourceGraphite,
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},
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func(t *testing.T, r *http.Request) {
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checkEqualString(t, graphitePath, r.URL.Path)
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},
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},
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{
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"graphite prefix",
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false,
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&VMStorage{
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dataSourceType: datasourceGraphite,
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appendTypePrefix: true,
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},
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func(t *testing.T, r *http.Request) {
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checkEqualString(t, graphitePrefix+graphitePath, r.URL.Path)
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},
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},
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{
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"default params",
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false,
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&VMStorage{},
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func(t *testing.T, r *http.Request) {
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exp := fmt.Sprintf("query=%s&time=%d", query, timestamp.Unix())
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checkEqualString(t, exp, r.URL.RawQuery)
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},
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},
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{
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"default range params",
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true,
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&VMStorage{},
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func(t *testing.T, r *http.Request) {
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exp := fmt.Sprintf("end=%d&query=%s&start=%d", timestamp.Unix(), query, timestamp.Unix())
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checkEqualString(t, exp, r.URL.RawQuery)
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},
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},
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{
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"basic auth",
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false,
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&VMStorage{authCfg: authCfg},
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func(t *testing.T, r *http.Request) {
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u, p, _ := r.BasicAuth()
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checkEqualString(t, "foo", u)
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checkEqualString(t, "bar", p)
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},
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},
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{
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"basic auth range",
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true,
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&VMStorage{authCfg: authCfg},
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func(t *testing.T, r *http.Request) {
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u, p, _ := r.BasicAuth()
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checkEqualString(t, "foo", u)
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checkEqualString(t, "bar", p)
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},
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},
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{
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"lookback",
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false,
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&VMStorage{
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lookBack: time.Minute,
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},
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func(t *testing.T, r *http.Request) {
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exp := fmt.Sprintf("query=%s&time=%d", query, timestamp.Add(-time.Minute).Unix())
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checkEqualString(t, exp, r.URL.RawQuery)
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},
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},
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{
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"evaluation interval",
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false,
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&VMStorage{
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evaluationInterval: 15 * time.Second,
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},
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func(t *testing.T, r *http.Request) {
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evalInterval := 15 * time.Second
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tt := timestamp.Truncate(evalInterval)
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exp := fmt.Sprintf("query=%s&step=%v&time=%d", query, evalInterval, tt.Unix())
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checkEqualString(t, exp, r.URL.RawQuery)
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},
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},
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{
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"lookback + evaluation interval",
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false,
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&VMStorage{
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lookBack: time.Minute,
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evaluationInterval: 15 * time.Second,
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},
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func(t *testing.T, r *http.Request) {
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evalInterval := 15 * time.Second
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tt := timestamp.Add(-time.Minute)
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tt = tt.Truncate(evalInterval)
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exp := fmt.Sprintf("query=%s&step=%v&time=%d", query, evalInterval, tt.Unix())
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checkEqualString(t, exp, r.URL.RawQuery)
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},
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},
|
|
{
|
|
"step override",
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false,
|
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&VMStorage{
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queryStep: time.Minute,
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},
|
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func(t *testing.T, r *http.Request) {
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exp := fmt.Sprintf("query=%s&step=%ds&time=%d", query, int(time.Minute.Seconds()), timestamp.Unix())
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checkEqualString(t, exp, r.URL.RawQuery)
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},
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},
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|
{
|
|
"step to seconds",
|
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false,
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&VMStorage{
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evaluationInterval: 3 * time.Hour,
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},
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func(t *testing.T, r *http.Request) {
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evalInterval := 3 * time.Hour
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tt := timestamp.Truncate(evalInterval)
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exp := fmt.Sprintf("query=%s&step=%ds&time=%d", query, int(evalInterval.Seconds()), tt.Unix())
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checkEqualString(t, exp, r.URL.RawQuery)
|
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},
|
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},
|
|
{
|
|
"prometheus extra params",
|
|
false,
|
|
&VMStorage{
|
|
extraParams: url.Values{"round_digits": {"10"}},
|
|
},
|
|
func(t *testing.T, r *http.Request) {
|
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exp := fmt.Sprintf("query=%s&round_digits=10&time=%d", query, timestamp.Unix())
|
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checkEqualString(t, exp, r.URL.RawQuery)
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},
|
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},
|
|
{
|
|
"prometheus extra params range",
|
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true,
|
|
&VMStorage{
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extraParams: url.Values{
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"nocache": {"1"},
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"max_lookback": {"1h"},
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},
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},
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|
func(t *testing.T, r *http.Request) {
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exp := fmt.Sprintf("end=%d&max_lookback=1h&nocache=1&query=%s&start=%d",
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timestamp.Unix(), query, timestamp.Unix())
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checkEqualString(t, exp, r.URL.RawQuery)
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},
|
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},
|
|
{
|
|
"graphite extra params",
|
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false,
|
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&VMStorage{
|
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dataSourceType: datasourceGraphite,
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extraParams: url.Values{
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"nocache": {"1"},
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"max_lookback": {"1h"},
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},
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},
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func(t *testing.T, r *http.Request) {
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exp := fmt.Sprintf("format=json&from=-5min&max_lookback=1h&nocache=1&target=%s&until=now", query)
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checkEqualString(t, exp, r.URL.RawQuery)
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},
|
|
},
|
|
}
|
|
|
|
for _, tc := range testCases {
|
|
t.Run(tc.name, func(t *testing.T) {
|
|
req, err := tc.vm.newRequestPOST()
|
|
if err != nil {
|
|
t.Fatalf("unexpected error: %s", err)
|
|
}
|
|
switch tc.vm.dataSourceType {
|
|
case "", datasourcePrometheus:
|
|
if tc.queryRange {
|
|
tc.vm.setPrometheusRangeReqParams(req, query, timestamp, timestamp)
|
|
} else {
|
|
tc.vm.setPrometheusInstantReqParams(req, query, timestamp)
|
|
}
|
|
case datasourceGraphite:
|
|
tc.vm.setGraphiteReqParams(req, query, timestamp)
|
|
}
|
|
tc.checkFn(t, req)
|
|
})
|
|
}
|
|
}
|
|
|
|
func TestHeaders(t *testing.T) {
|
|
var testCases = []struct {
|
|
name string
|
|
vmFn func() *VMStorage
|
|
checkFn func(t *testing.T, r *http.Request)
|
|
}{
|
|
{
|
|
name: "basic auth",
|
|
vmFn: func() *VMStorage {
|
|
cfg, err := utils.AuthConfig(utils.WithBasicAuth("foo", "bar", ""))
|
|
if err != nil {
|
|
t.Errorf("Error get auth config: %s", err)
|
|
}
|
|
return &VMStorage{authCfg: cfg}
|
|
},
|
|
checkFn: func(t *testing.T, r *http.Request) {
|
|
u, p, _ := r.BasicAuth()
|
|
checkEqualString(t, "foo", u)
|
|
checkEqualString(t, "bar", p)
|
|
},
|
|
},
|
|
{
|
|
name: "bearer auth",
|
|
vmFn: func() *VMStorage {
|
|
cfg, err := utils.AuthConfig(utils.WithBearer("foo", ""))
|
|
if err != nil {
|
|
t.Errorf("Error get auth config: %s", err)
|
|
}
|
|
return &VMStorage{authCfg: cfg}
|
|
},
|
|
checkFn: func(t *testing.T, r *http.Request) {
|
|
reqToken := r.Header.Get("Authorization")
|
|
splitToken := strings.Split(reqToken, "Bearer ")
|
|
if len(splitToken) != 2 {
|
|
t.Errorf("expected two items got %d", len(splitToken))
|
|
}
|
|
token := splitToken[1]
|
|
checkEqualString(t, "foo", token)
|
|
},
|
|
},
|
|
{
|
|
name: "custom extraHeaders",
|
|
vmFn: func() *VMStorage {
|
|
return &VMStorage{extraHeaders: []keyValue{
|
|
{key: "Foo", value: "bar"},
|
|
{key: "Baz", value: "qux"},
|
|
}}
|
|
},
|
|
checkFn: func(t *testing.T, r *http.Request) {
|
|
h1 := r.Header.Get("Foo")
|
|
checkEqualString(t, "bar", h1)
|
|
h2 := r.Header.Get("Baz")
|
|
checkEqualString(t, "qux", h2)
|
|
},
|
|
},
|
|
{
|
|
name: "custom header overrides basic auth",
|
|
vmFn: func() *VMStorage {
|
|
cfg, err := utils.AuthConfig(utils.WithBasicAuth("foo", "bar", ""))
|
|
if err != nil {
|
|
t.Errorf("Error get auth config: %s", err)
|
|
}
|
|
return &VMStorage{
|
|
authCfg: cfg,
|
|
extraHeaders: []keyValue{
|
|
{key: "Authorization", value: "Basic QWxhZGRpbjpvcGVuIHNlc2FtZQ=="},
|
|
}}
|
|
},
|
|
checkFn: func(t *testing.T, r *http.Request) {
|
|
u, p, _ := r.BasicAuth()
|
|
checkEqualString(t, "Aladdin", u)
|
|
checkEqualString(t, "open sesame", p)
|
|
},
|
|
},
|
|
}
|
|
for _, tt := range testCases {
|
|
t.Run(tt.name, func(t *testing.T) {
|
|
vm := tt.vmFn()
|
|
req, err := vm.newRequestPOST()
|
|
if err != nil {
|
|
t.Fatalf("unexpected error: %s", err)
|
|
}
|
|
tt.checkFn(t, req)
|
|
})
|
|
}
|
|
}
|
|
|
|
func checkEqualString(t *testing.T, exp, got string) {
|
|
t.Helper()
|
|
if got != exp {
|
|
t.Errorf("expected to get: \n%q; \ngot: \n%q", exp, got)
|
|
}
|
|
}
|
|
|
|
func expectError(t *testing.T, err error, exp string) {
|
|
t.Helper()
|
|
if err == nil {
|
|
t.Errorf("expected non-nil error")
|
|
}
|
|
if !strings.Contains(err.Error(), exp) {
|
|
t.Errorf("expected error %q to contain %q", err, exp)
|
|
}
|
|
}
|