// Copyright 2017 The Prometheus Authors // Licensed under the Apache License, Version 2.0 (the "License"); // you may not use this file except in compliance with the License. // You may obtain a copy of the License at // // http://www.apache.org/licenses/LICENSE-2.0 // // Unless required by applicable law or agreed to in writing, software // distributed under the License is distributed on an "AS IS" BASIS, // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. // See the License for the specific language governing permissions and // limitations under the License. // +build go1.7 package v1 import ( "context" "encoding/json" "errors" "fmt" "net/http" "net/url" "reflect" "strings" "testing" "time" "github.com/prometheus/common/model" ) type apiTest struct { do func() (interface{}, error) inErr error inStatusCode int inRes interface{} reqPath string reqParam url.Values reqMethod string res interface{} err error } type apiTestClient struct { *testing.T curTest apiTest } func (c *apiTestClient) URL(ep string, args map[string]string) *url.URL { path := ep for k, v := range args { path = strings.Replace(path, ":"+k, v, -1) } u := &url.URL{ Host: "test:9090", Path: path, } return u } func (c *apiTestClient) Do(ctx context.Context, req *http.Request) (*http.Response, []byte, error) { test := c.curTest if req.URL.Path != test.reqPath { c.Errorf("unexpected request path: want %s, got %s", test.reqPath, req.URL.Path) } if req.Method != test.reqMethod { c.Errorf("unexpected request method: want %s, got %s", test.reqMethod, req.Method) } b, err := json.Marshal(test.inRes) if err != nil { c.Fatal(err) } resp := &http.Response{} if test.inStatusCode != 0 { resp.StatusCode = test.inStatusCode } else if test.inErr != nil { resp.StatusCode = statusAPIError } else { resp.StatusCode = http.StatusOK } return resp, b, test.inErr } func TestAPIs(t *testing.T) { testTime := time.Now() client := &apiTestClient{T: t} promAPI := &httpAPI{ client: client, } doAlertManagers := func() func() (interface{}, error) { return func() (interface{}, error) { return promAPI.AlertManagers(context.Background()) } } doCleanTombstones := func() func() (interface{}, error) { return func() (interface{}, error) { return nil, promAPI.CleanTombstones(context.Background()) } } doConfig := func() func() (interface{}, error) { return func() (interface{}, error) { return promAPI.Config(context.Background()) } } doDeleteSeries := func(matcher string, startTime time.Time, endTime time.Time) func() (interface{}, error) { return func() (interface{}, error) { return nil, promAPI.DeleteSeries(context.Background(), []string{matcher}, startTime, endTime) } } doFlags := func() func() (interface{}, error) { return func() (interface{}, error) { return promAPI.Flags(context.Background()) } } doLabelValues := func(label string) func() (interface{}, error) { return func() (interface{}, error) { return promAPI.LabelValues(context.Background(), label) } } doQuery := func(q string, ts time.Time) func() (interface{}, error) { return func() (interface{}, error) { return promAPI.Query(context.Background(), q, ts) } } doQueryRange := func(q string, rng Range) func() (interface{}, error) { return func() (interface{}, error) { return promAPI.QueryRange(context.Background(), q, rng) } } doSeries := func(matcher string, startTime time.Time, endTime time.Time) func() (interface{}, error) { return func() (interface{}, error) { return promAPI.Series(context.Background(), []string{matcher}, startTime, endTime) } } doSnapshot := func(skipHead bool) func() (interface{}, error) { return func() (interface{}, error) { return promAPI.Snapshot(context.Background(), skipHead) } } doTargets := func() func() (interface{}, error) { return func() (interface{}, error) { return promAPI.Targets(context.Background()) } } queryTests := []apiTest{ { do: doQuery("2", testTime), inRes: &queryResult{ Type: model.ValScalar, Result: &model.Scalar{ Value: 2, Timestamp: model.TimeFromUnix(testTime.Unix()), }, }, reqMethod: "GET", reqPath: "/api/v1/query", reqParam: url.Values{ "query": []string{"2"}, "time": []string{testTime.Format(time.RFC3339Nano)}, }, res: &model.Scalar{ Value: 2, Timestamp: model.TimeFromUnix(testTime.Unix()), }, }, { do: doQuery("2", testTime), inErr: fmt.Errorf("some error"), reqMethod: "GET", reqPath: "/api/v1/query", reqParam: url.Values{ "query": []string{"2"}, "time": []string{testTime.Format(time.RFC3339Nano)}, }, err: fmt.Errorf("some error"), }, { do: doQuery("2", testTime), inRes: "some body", inStatusCode: 500, inErr: &Error{ Type: ErrServer, Msg: "server error: 500", Detail: "some body", }, reqMethod: "GET", reqPath: "/api/v1/query", reqParam: url.Values{ "query": []string{"2"}, "time": []string{testTime.Format(time.RFC3339Nano)}, }, err: errors.New("server_error: server error: 500"), }, { do: doQuery("2", testTime), inRes: "some body", inStatusCode: 404, inErr: &Error{ Type: ErrClient, Msg: "client error: 404", Detail: "some body", }, reqMethod: "GET", reqPath: "/api/v1/query", reqParam: url.Values{ "query": []string{"2"}, "time": []string{testTime.Format(time.RFC3339Nano)}, }, err: errors.New("client_error: client error: 404"), }, { do: doQueryRange("2", Range{ Start: testTime.Add(-time.Minute), End: testTime, Step: time.Minute, }), inErr: fmt.Errorf("some error"), reqMethod: "GET", reqPath: "/api/v1/query_range", reqParam: url.Values{ "query": []string{"2"}, "start": []string{testTime.Add(-time.Minute).Format(time.RFC3339Nano)}, "end": []string{testTime.Format(time.RFC3339Nano)}, "step": []string{time.Minute.String()}, }, err: fmt.Errorf("some error"), }, { do: doLabelValues("mylabel"), inRes: []string{"val1", "val2"}, reqMethod: "GET", reqPath: "/api/v1/label/mylabel/values", res: model.LabelValues{"val1", "val2"}, }, { do: doLabelValues("mylabel"), inErr: fmt.Errorf("some error"), reqMethod: "GET", reqPath: "/api/v1/label/mylabel/values", err: fmt.Errorf("some error"), }, { do: doSeries("up", testTime.Add(-time.Minute), testTime), inRes: []map[string]string{ { "__name__": "up", "job": "prometheus", "instance": "localhost:9090"}, }, reqMethod: "GET", reqPath: "/api/v1/series", reqParam: url.Values{ "match": []string{"up"}, "start": []string{testTime.Add(-time.Minute).Format(time.RFC3339Nano)}, "end": []string{testTime.Format(time.RFC3339Nano)}, }, res: []model.LabelSet{ model.LabelSet{ "__name__": "up", "job": "prometheus", "instance": "localhost:9090", }, }, }, { do: doSeries("up", testTime.Add(-time.Minute), testTime), inErr: fmt.Errorf("some error"), reqMethod: "GET", reqPath: "/api/v1/series", reqParam: url.Values{ "match": []string{"up"}, "start": []string{testTime.Add(-time.Minute).Format(time.RFC3339Nano)}, "end": []string{testTime.Format(time.RFC3339Nano)}, }, err: fmt.Errorf("some error"), }, { do: doSnapshot(true), inRes: map[string]string{ "name": "20171210T211224Z-2be650b6d019eb54", }, reqMethod: "POST", reqPath: "/api/v1/admin/tsdb/snapshot", reqParam: url.Values{ "skip_head": []string{"true"}, }, res: SnapshotResult{ Name: "20171210T211224Z-2be650b6d019eb54", }, }, { do: doSnapshot(true), inErr: fmt.Errorf("some error"), reqMethod: "POST", reqPath: "/api/v1/admin/tsdb/snapshot", err: fmt.Errorf("some error"), }, { do: doCleanTombstones(), reqMethod: "POST", reqPath: "/api/v1/admin/tsdb/clean_tombstones", }, { do: doCleanTombstones(), inErr: fmt.Errorf("some error"), reqMethod: "POST", reqPath: "/api/v1/admin/tsdb/clean_tombstones", err: fmt.Errorf("some error"), }, { do: doDeleteSeries("up", testTime.Add(-time.Minute), testTime), inRes: []map[string]string{ { "__name__": "up", "job": "prometheus", "instance": "localhost:9090"}, }, reqMethod: "POST", reqPath: "/api/v1/admin/tsdb/delete_series", reqParam: url.Values{ "match": []string{"up"}, "start": []string{testTime.Add(-time.Minute).Format(time.RFC3339Nano)}, "end": []string{testTime.Format(time.RFC3339Nano)}, }, }, { do: doDeleteSeries("up", testTime.Add(-time.Minute), testTime), inErr: fmt.Errorf("some error"), reqMethod: "POST", reqPath: "/api/v1/admin/tsdb/delete_series", reqParam: url.Values{ "match": []string{"up"}, "start": []string{testTime.Add(-time.Minute).Format(time.RFC3339Nano)}, "end": []string{testTime.Format(time.RFC3339Nano)}, }, err: fmt.Errorf("some error"), }, { do: doConfig(), reqMethod: "GET", reqPath: "/api/v1/status/config", inRes: map[string]string{ "yaml": "", }, res: ConfigResult{ YAML: "", }, }, { do: doConfig(), reqMethod: "GET", reqPath: "/api/v1/status/config", inErr: fmt.Errorf("some error"), err: fmt.Errorf("some error"), }, { do: doFlags(), reqMethod: "GET", reqPath: "/api/v1/status/flags", inRes: map[string]string{ "alertmanager.notification-queue-capacity": "10000", "alertmanager.timeout": "10s", "log.level": "info", "query.lookback-delta": "5m", "query.max-concurrency": "20", }, res: FlagsResult{ "alertmanager.notification-queue-capacity": "10000", "alertmanager.timeout": "10s", "log.level": "info", "query.lookback-delta": "5m", "query.max-concurrency": "20", }, }, { do: doFlags(), reqMethod: "GET", reqPath: "/api/v1/status/flags", inErr: fmt.Errorf("some error"), err: fmt.Errorf("some error"), }, { do: doAlertManagers(), reqMethod: "GET", reqPath: "/api/v1/alertmanagers", inRes: map[string]interface{}{ "activeAlertManagers": []map[string]string{ { "url": "http://127.0.0.1:9091/api/v1/alerts", }, }, "droppedAlertManagers": []map[string]string{ { "url": "http://127.0.0.1:9092/api/v1/alerts", }, }, }, res: AlertManagersResult{ Active: []AlertManager{ { URL: "http://127.0.0.1:9091/api/v1/alerts", }, }, Dropped: []AlertManager{ { URL: "http://127.0.0.1:9092/api/v1/alerts", }, }, }, }, { do: doAlertManagers(), reqMethod: "GET", reqPath: "/api/v1/alertmanagers", inErr: fmt.Errorf("some error"), err: fmt.Errorf("some error"), }, { do: doTargets(), reqMethod: "GET", reqPath: "/api/v1/targets", inRes: map[string]interface{}{ "activeTargets": []map[string]interface{}{ { "discoveredLabels": map[string]string{ "__address__": "127.0.0.1:9090", "__metrics_path__": "/metrics", "__scheme__": "http", "job": "prometheus", }, "labels": map[string]string{ "instance": "127.0.0.1:9090", "job": "prometheus", }, "scrapeUrl": "http://127.0.0.1:9090", "lastError": "error while scraping target", "lastScrape": testTime.UTC().Format(time.RFC3339Nano), "health": "up", }, }, "droppedTargets": []map[string]interface{}{ { "discoveredLabels": map[string]string{ "__address__": "127.0.0.1:9100", "__metrics_path__": "/metrics", "__scheme__": "http", "job": "node", }, }, }, }, res: TargetsResult{ Active: []ActiveTarget{ { DiscoveredLabels: model.LabelSet{ "__address__": "127.0.0.1:9090", "__metrics_path__": "/metrics", "__scheme__": "http", "job": "prometheus", }, Labels: model.LabelSet{ "instance": "127.0.0.1:9090", "job": "prometheus", }, ScrapeURL: "http://127.0.0.1:9090", LastError: "error while scraping target", LastScrape: testTime.UTC(), Health: HealthGood, }, }, Dropped: []DroppedTarget{ { DiscoveredLabels: model.LabelSet{ "__address__": "127.0.0.1:9100", "__metrics_path__": "/metrics", "__scheme__": "http", "job": "node", }, }, }, }, }, { do: doTargets(), reqMethod: "GET", reqPath: "/api/v1/targets", inErr: fmt.Errorf("some error"), err: fmt.Errorf("some error"), }, } var tests []apiTest tests = append(tests, queryTests...) for i, test := range tests { t.Run(fmt.Sprintf("%d", i), func(t *testing.T) { client.curTest = test res, err := test.do() if test.err != nil { if err == nil { t.Fatalf("expected error %q but got none", test.err) } if err.Error() != test.err.Error() { t.Errorf("unexpected error: want %s, got %s", test.err, err) } if apiErr, ok := err.(*Error); ok { if apiErr.Detail != test.inRes { t.Errorf("%q should be %q", apiErr.Detail, test.inRes) } } return } if err != nil { t.Fatalf("unexpected error: %s", err) } if !reflect.DeepEqual(res, test.res) { t.Errorf("unexpected result: want %v, got %v", test.res, res) } }) } } type testClient struct { *testing.T ch chan apiClientTest req *http.Request } type apiClientTest struct { code int response interface{} expectedBody string expectedErr *Error } func (c *testClient) URL(ep string, args map[string]string) *url.URL { return nil } func (c *testClient) Do(ctx context.Context, req *http.Request) (*http.Response, []byte, error) { if ctx == nil { c.Fatalf("context was not passed down") } if req != c.req { c.Fatalf("request was not passed down") } test := <-c.ch var b []byte var err error switch v := test.response.(type) { case string: b = []byte(v) default: b, err = json.Marshal(v) if err != nil { c.Fatal(err) } } resp := &http.Response{ StatusCode: test.code, } return resp, b, nil } func TestAPIClientDo(t *testing.T) { tests := []apiClientTest{ { code: statusAPIError, response: &apiResponse{ Status: "error", Data: json.RawMessage(`null`), ErrorType: ErrBadData, Error: "failed", }, expectedErr: &Error{ Type: ErrBadData, Msg: "failed", }, expectedBody: `null`, }, { code: statusAPIError, response: &apiResponse{ Status: "error", Data: json.RawMessage(`"test"`), ErrorType: ErrTimeout, Error: "timed out", }, expectedErr: &Error{ Type: ErrTimeout, Msg: "timed out", }, expectedBody: `test`, }, { code: http.StatusInternalServerError, response: "500 error details", expectedErr: &Error{ Type: ErrServer, Msg: "server error: 500", Detail: "500 error details", }, }, { code: http.StatusNotFound, response: "404 error details", expectedErr: &Error{ Type: ErrClient, Msg: "client error: 404", Detail: "404 error details", }, }, { code: http.StatusBadRequest, response: &apiResponse{ Status: "error", Data: json.RawMessage(`null`), ErrorType: ErrBadData, Error: "end timestamp must not be before start time", }, expectedErr: &Error{ Type: ErrBadData, Msg: "end timestamp must not be before start time", }, }, { code: statusAPIError, response: "bad json", expectedErr: &Error{ Type: ErrBadResponse, Msg: "invalid character 'b' looking for beginning of value", }, }, { code: statusAPIError, response: &apiResponse{ Status: "success", Data: json.RawMessage(`"test"`), }, expectedErr: &Error{ Type: ErrBadResponse, Msg: "inconsistent body for response code", }, }, { code: statusAPIError, response: &apiResponse{ Status: "success", Data: json.RawMessage(`"test"`), ErrorType: ErrTimeout, Error: "timed out", }, expectedErr: &Error{ Type: ErrBadResponse, Msg: "inconsistent body for response code", }, }, { code: http.StatusOK, response: &apiResponse{ Status: "error", Data: json.RawMessage(`"test"`), ErrorType: ErrTimeout, Error: "timed out", }, expectedErr: &Error{ Type: ErrBadResponse, Msg: "inconsistent body for response code", }, }, } tc := &testClient{ T: t, ch: make(chan apiClientTest, 1), req: &http.Request{}, } client := &apiClient{tc} for i, test := range tests { t.Run(fmt.Sprintf("%d", i), func(t *testing.T) { tc.ch <- test _, body, err := client.Do(context.Background(), tc.req) if test.expectedErr != nil { if err == nil { t.Fatalf("expected error %q but got none", test.expectedErr) } if test.expectedErr.Error() != err.Error() { t.Errorf("unexpected error: want %q, got %q", test.expectedErr, err) } if test.expectedErr.Detail != "" { apiErr := err.(*Error) if apiErr.Detail != test.expectedErr.Detail { t.Errorf("unexpected error details: want %q, got %q", test.expectedErr.Detail, apiErr.Detail) } } return } if err != nil { t.Fatalf("unexpeceted error %s", err) } want, got := test.expectedBody, string(body) if want != got { t.Errorf("unexpected body: want %q, got %q", want, got) } }) } }