示例#1
0
func (serv MetricsService) SetTargets(targetGroups []TargetGroup, jobName string) {
	if job := serv.appState.Config.GetJobByName(jobName); job == nil {
		rb := serv.ResponseBuilder()
		rb.SetResponseCode(http.StatusNotFound)
	} else {
		newTargets := []retrieval.Target{}
		for _, targetGroup := range targetGroups {
			// Do mandatory map type conversion due to Go shortcomings.
			baseLabels := model.LabelSet{}
			for label, value := range targetGroup.BaseLabels {
				baseLabels[model.LabelName(label)] = model.LabelValue(value)
			}

			for _, endpoint := range targetGroup.Endpoints {
				newTarget := retrieval.NewTarget(endpoint, time.Second*5, baseLabels)
				newTargets = append(newTargets, newTarget)
			}
		}
		serv.appState.TargetManager.ReplaceTargets(job, newTargets, serv.appState.Config.Global.ScrapeInterval)
	}
}
示例#2
0
// SetTargets handles the /api/targets endpoint.
func (serv MetricsService) SetTargets(w http.ResponseWriter, r *http.Request) {
	params := httputils.GetQueryParams(r)
	jobName := params.Get("job")

	decoder := json.NewDecoder(r.Body)
	var targetGroups []TargetGroup
	err := decoder.Decode(&targetGroups)
	if err != nil {
		http.Error(w, err.Error(), http.StatusBadRequest)
		return
	}

	job := serv.Config.GetJobByName(jobName)
	if job == nil {
		http.Error(w, "job not found", http.StatusNotFound)
		return
	}

	newTargets := []retrieval.Target{}

	for _, targetGroup := range targetGroups {
		// Do mandatory map type conversion due to Go shortcomings.
		baseLabels := clientmodel.LabelSet{
			clientmodel.JobLabel: clientmodel.LabelValue(job.GetName()),
		}
		for label, value := range targetGroup.BaseLabels {
			baseLabels[clientmodel.LabelName(label)] = clientmodel.LabelValue(value)
		}

		for _, endpoint := range targetGroup.Endpoints {
			newTarget := retrieval.NewTarget(endpoint, job.ScrapeTimeout(), baseLabels)
			newTargets = append(newTargets, newTarget)
		}
	}

	// BUG(julius): Validate that this ScrapeInterval is in fact the proper one
	// for the job.
	serv.TargetManager.ReplaceTargets(*job, newTargets)
}
示例#3
0
func TestEndpoints(t *testing.T) {
	suite, err := promql.NewTest(t, `
		load 1m
			test_metric1{foo="bar"} 0+100x100
			test_metric1{foo="boo"} 1+0x100
			test_metric2{foo="boo"} 1+0x100
	`)
	if err != nil {
		t.Fatal(err)
	}
	defer suite.Close()

	if err := suite.Run(); err != nil {
		t.Fatal(err)
	}

	now := model.Now()

	tr := targetRetrieverFunc(func() []retrieval.Target {
		return []retrieval.Target{
			*retrieval.NewTarget(
				model.LabelSet{
					model.SchemeLabel:      "http",
					model.AddressLabel:     "example.com:8080",
					model.MetricsPathLabel: "/metrics",
				},
				model.LabelSet{},
				url.Values{},
			),
		}
	})

	api := &API{
		Storage:         suite.Storage(),
		QueryEngine:     suite.QueryEngine(),
		targetRetriever: tr,
		now:             func() model.Time { return now },
	}

	start := model.Time(0)
	var tests = []struct {
		endpoint apiFunc
		params   map[string]string
		query    url.Values
		response interface{}
		errType  errorType
	}{
		{
			endpoint: api.query,
			query: url.Values{
				"query": []string{"2"},
				"time":  []string{"123.3"},
			},
			response: &queryData{
				ResultType: model.ValScalar,
				Result: &model.Scalar{
					Value:     2,
					Timestamp: start.Add(123*time.Second + 300*time.Millisecond),
				},
			},
		},
		{
			endpoint: api.query,
			query: url.Values{
				"query": []string{"0.333"},
				"time":  []string{"1970-01-01T00:02:03Z"},
			},
			response: &queryData{
				ResultType: model.ValScalar,
				Result: &model.Scalar{
					Value:     0.333,
					Timestamp: start.Add(123 * time.Second),
				},
			},
		},
		{
			endpoint: api.query,
			query: url.Values{
				"query": []string{"0.333"},
				"time":  []string{"1970-01-01T01:02:03+01:00"},
			},
			response: &queryData{
				ResultType: model.ValScalar,
				Result: &model.Scalar{
					Value:     0.333,
					Timestamp: start.Add(123 * time.Second),
				},
			},
		},
		{
			endpoint: api.query,
			query: url.Values{
				"query": []string{"0.333"},
			},
			response: &queryData{
				ResultType: model.ValScalar,
				Result: &model.Scalar{
					Value:     0.333,
					Timestamp: now,
				},
			},
		},
		{
			endpoint: api.queryRange,
			query: url.Values{
				"query": []string{"time()"},
				"start": []string{"0"},
				"end":   []string{"2"},
				"step":  []string{"1"},
			},
			response: &queryData{
				ResultType: model.ValMatrix,
				Result: model.Matrix{
					&model.SampleStream{
						Values: []model.SamplePair{
							{Value: 0, Timestamp: start},
							{Value: 1, Timestamp: start.Add(1 * time.Second)},
							{Value: 2, Timestamp: start.Add(2 * time.Second)},
						},
						Metric: model.Metric{},
					},
				},
			},
		},
		// Missing query params in range queries.
		{
			endpoint: api.queryRange,
			query: url.Values{
				"query": []string{"time()"},
				"end":   []string{"2"},
				"step":  []string{"1"},
			},
			errType: errorBadData,
		},
		{
			endpoint: api.queryRange,
			query: url.Values{
				"query": []string{"time()"},
				"start": []string{"0"},
				"step":  []string{"1"},
			},
			errType: errorBadData,
		},
		{
			endpoint: api.queryRange,
			query: url.Values{
				"query": []string{"time()"},
				"start": []string{"0"},
				"end":   []string{"2"},
			},
			errType: errorBadData,
		},
		// Bad query expression.
		{
			endpoint: api.query,
			query: url.Values{
				"query": []string{"invalid][query"},
				"time":  []string{"1970-01-01T01:02:03+01:00"},
			},
			errType: errorBadData,
		},
		{
			endpoint: api.queryRange,
			query: url.Values{
				"query": []string{"invalid][query"},
				"start": []string{"0"},
				"end":   []string{"100"},
				"step":  []string{"1"},
			},
			errType: errorBadData,
		},
		// Invalid step
		{
			endpoint: api.queryRange,
			query: url.Values{
				"query": []string{"time()"},
				"start": []string{"1"},
				"end":   []string{"2"},
				"step":  []string{"0"},
			},
			errType: errorBadData,
		},
		// Start after end
		{
			endpoint: api.queryRange,
			query: url.Values{
				"query": []string{"time()"},
				"start": []string{"2"},
				"end":   []string{"1"},
				"step":  []string{"1"},
			},
			errType: errorBadData,
		},
		{
			endpoint: api.labelValues,
			params: map[string]string{
				"name": "__name__",
			},
			response: model.LabelValues{
				"test_metric1",
				"test_metric2",
			},
		},
		{
			endpoint: api.labelValues,
			params: map[string]string{
				"name": "foo",
			},
			response: model.LabelValues{
				"bar",
				"boo",
			},
		},
		// Bad name parameter.
		{
			endpoint: api.labelValues,
			params: map[string]string{
				"name": "not!!!allowed",
			},
			errType: errorBadData,
		},
		{
			endpoint: api.series,
			query: url.Values{
				"match[]": []string{`test_metric2`},
			},
			response: []model.Metric{
				{
					"__name__": "test_metric2",
					"foo":      "boo",
				},
			},
		},
		{
			endpoint: api.series,
			query: url.Values{
				"match[]": []string{`test_metric1{foo=~".+o"}`},
			},
			response: []model.Metric{
				{
					"__name__": "test_metric1",
					"foo":      "boo",
				},
			},
		},
		{
			endpoint: api.series,
			query: url.Values{
				"match[]": []string{`test_metric1{foo=~"o$"}`, `test_metric1{foo=~".+o"}`},
			},
			response: []model.Metric{
				{
					"__name__": "test_metric1",
					"foo":      "boo",
				},
			},
		},
		{
			endpoint: api.series,
			query: url.Values{
				"match[]": []string{`test_metric1{foo=~".+o"}`, `none`},
			},
			response: []model.Metric{
				{
					"__name__": "test_metric1",
					"foo":      "boo",
				},
			},
		},
		// Start and end before series starts.
		{
			endpoint: api.series,
			query: url.Values{
				"match[]": []string{`test_metric2`},
				"start":   []string{"-2"},
				"end":     []string{"-1"},
			},
			response: []model.Metric{},
		},
		// Start and end after series ends.
		{
			endpoint: api.series,
			query: url.Values{
				"match[]": []string{`test_metric2`},
				"start":   []string{"100000"},
				"end":     []string{"100001"},
			},
			response: []model.Metric{},
		},
		// Start before series starts, end after series ends.
		{
			endpoint: api.series,
			query: url.Values{
				"match[]": []string{`test_metric2`},
				"start":   []string{"-1"},
				"end":     []string{"100000"},
			},
			response: []model.Metric{
				{
					"__name__": "test_metric2",
					"foo":      "boo",
				},
			},
		},
		// Start and end within series.
		{
			endpoint: api.series,
			query: url.Values{
				"match[]": []string{`test_metric2`},
				"start":   []string{"1"},
				"end":     []string{"100"},
			},
			response: []model.Metric{
				{
					"__name__": "test_metric2",
					"foo":      "boo",
				},
			},
		},
		// Start within series, end after.
		{
			endpoint: api.series,
			query: url.Values{
				"match[]": []string{`test_metric2`},
				"start":   []string{"1"},
				"end":     []string{"100000"},
			},
			response: []model.Metric{
				{
					"__name__": "test_metric2",
					"foo":      "boo",
				},
			},
		},
		// Start before series, end within series.
		{
			endpoint: api.series,
			query: url.Values{
				"match[]": []string{`test_metric2`},
				"start":   []string{"-1"},
				"end":     []string{"1"},
			},
			response: []model.Metric{
				{
					"__name__": "test_metric2",
					"foo":      "boo",
				},
			},
		},
		// Missing match[] query params in series requests.
		{
			endpoint: api.series,
			errType:  errorBadData,
		},
		{
			endpoint: api.dropSeries,
			errType:  errorBadData,
		},
		// The following tests delete time series from the test storage. They
		// must remain at the end and are fixed in their order.
		{
			endpoint: api.dropSeries,
			query: url.Values{
				"match[]": []string{`test_metric1{foo=~".+o"}`},
			},
			response: struct {
				NumDeleted int `json:"numDeleted"`
			}{1},
		},
		{
			endpoint: api.series,
			query: url.Values{
				"match[]": []string{`test_metric1`},
			},
			response: []model.Metric{
				{
					"__name__": "test_metric1",
					"foo":      "bar",
				},
			},
		}, {
			endpoint: api.dropSeries,
			query: url.Values{
				"match[]": []string{`{__name__=~".+"}`},
			},
			response: struct {
				NumDeleted int `json:"numDeleted"`
			}{2},
		}, {
			endpoint: api.targets,
			response: []*Target{
				&Target{
					DiscoveredLabels: model.LabelSet{},
					Labels:           model.LabelSet{},
					ScrapeUrl:        "http://example.com:8080/metrics",
					Health:           "unknown",
				},
			},
		},
	}

	for _, test := range tests {
		// Build a context with the correct request params.
		ctx := context.Background()
		for p, v := range test.params {
			ctx = route.WithParam(ctx, p, v)
		}
		api.context = func(r *http.Request) context.Context {
			return ctx
		}

		req, err := http.NewRequest("ANY", fmt.Sprintf("http://example.com?%s", test.query.Encode()), nil)
		if err != nil {
			t.Fatal(err)
		}
		resp, apiErr := test.endpoint(req)
		if apiErr != nil {
			if test.errType == errorNone {
				t.Fatalf("Unexpected error: %s", apiErr)
			}
			if test.errType != apiErr.typ {
				t.Fatalf("Expected error of type %q but got type %q", test.errType, apiErr.typ)
			}
			continue
		}
		if apiErr == nil && test.errType != errorNone {
			t.Fatalf("Expected error of type %q but got none", test.errType)
		}
		if !reflect.DeepEqual(resp, test.response) {
			t.Fatalf("Response does not match, expected:\n%+v\ngot:\n%+v", test.response, resp)
		}
		// Ensure that removed metrics are unindexed before the next request.
		suite.Storage().WaitForIndexing()
	}
}