Implement admin methods for Prometheus API
Signed-off-by: Bob Shannon <bshannon@palantir.com>
This commit is contained in:
Bob Shannon
parent
f504d69aff
commit
10dfec77bf
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@ -34,10 +34,13 @@ const (
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apiPrefix = "/api/v1"
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epQuery = apiPrefix + "/query"
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epQueryRange = apiPrefix + "/query_range"
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epLabelValues = apiPrefix + "/label/:name/values"
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epSeries = apiPrefix + "/series"
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epQuery = apiPrefix + "/query"
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epQueryRange = apiPrefix + "/query_range"
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epLabelValues = apiPrefix + "/label/:name/values"
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epSeries = apiPrefix + "/series"
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epSnapshot = apiPrefix + "/admin/tsdb/snapshot"
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epDeleteSeries = apiPrefix + "/admin/tsdb/delete_series"
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epCleanTombstones = apiPrefix + "/admin/tsdb/clean_tombstones"
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)
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// ErrorType models the different API error types.
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@ -80,6 +83,13 @@ type API interface {
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LabelValues(ctx context.Context, label string) (model.LabelValues, error)
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// Series finds series by label matchers.
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Series(ctx context.Context, matches []string, startTime time.Time, endTime time.Time) ([]model.LabelSet, error)
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// Snapshot creates a snapshot of all current data into snapshots/<datetime>-<rand>
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// under the TSDB's data directory and returns the directory as response.
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Snapshot(ctx context.Context, skipHead bool) (SnapshotResult, error)
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// DeleteSeries deletes data for a selection of series in a time range.
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DeleteSeries(ctx context.Context, matches []string, startTime time.Time, endTime time.Time) error
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// CleanTombstones removes the deleted data from disk and cleans up the existing tombstones.
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CleanTombstones(ctx context.Context) error
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}
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// queryResult contains result data for a query.
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@ -91,6 +101,11 @@ type queryResult struct {
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v model.Value
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}
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// SnapshotResult contains result data for a snapshot.
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type SnapshotResult struct {
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Name string
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}
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func (qr *queryResult) UnmarshalJSON(b []byte) error {
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v := struct {
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Type model.ValueType `json:"resultType"`
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@ -238,6 +253,63 @@ func (h *httpAPI) Series(ctx context.Context, matches []string, startTime time.T
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return mset, err
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}
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func (h *httpAPI) Snapshot(ctx context.Context, skipHead bool) (SnapshotResult, error) {
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u := h.client.URL(epSnapshot, nil)
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q := u.Query()
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q.Set("skip_head", strconv.FormatBool(skipHead))
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u.RawQuery = q.Encode()
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req, err := http.NewRequest(http.MethodPost, u.String(), nil)
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if err != nil {
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return SnapshotResult{}, err
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}
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_, body, err := h.client.Do(ctx, req)
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if err != nil {
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return SnapshotResult{}, err
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}
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var res SnapshotResult
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err = json.Unmarshal(body, &res)
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return res, err
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}
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func (h *httpAPI) DeleteSeries(ctx context.Context, matches []string, startTime time.Time, endTime time.Time) error {
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u := h.client.URL(epDeleteSeries, nil)
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q := u.Query()
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for _, m := range matches {
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q.Add("match[]", m)
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}
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q.Set("start", startTime.Format(time.RFC3339Nano))
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q.Set("end", endTime.Format(time.RFC3339Nano))
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u.RawQuery = q.Encode()
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req, err := http.NewRequest(http.MethodPost, u.String(), nil)
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if err != nil {
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return err
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}
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_, _, err = h.client.Do(ctx, req)
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return err
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}
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func (h *httpAPI) CleanTombstones(ctx context.Context) error {
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u := h.client.URL(epCleanTombstones, nil)
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req, err := http.NewRequest(http.MethodPost, u.String(), nil)
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if err != nil {
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return err
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}
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_, _, err = h.client.Do(ctx, req)
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return err
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}
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// apiClient wraps a regular client and processes successful API responses.
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// Successful also includes responses that errored at the API level.
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type apiClient struct {
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@ -90,31 +90,49 @@ func TestAPIs(t *testing.T) {
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client := &apiTestClient{T: t}
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queryAPI := &httpAPI{
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promAPI := &httpAPI{
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client: client,
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}
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doQuery := func(q string, ts time.Time) func() (interface{}, error) {
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return func() (interface{}, error) {
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return queryAPI.Query(context.Background(), q, ts)
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return promAPI.Query(context.Background(), q, ts)
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}
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}
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doQueryRange := func(q string, rng Range) func() (interface{}, error) {
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return func() (interface{}, error) {
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return queryAPI.QueryRange(context.Background(), q, rng)
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return promAPI.QueryRange(context.Background(), q, rng)
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}
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}
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doLabelValues := func(label string) func() (interface{}, error) {
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return func() (interface{}, error) {
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return queryAPI.LabelValues(context.Background(), label)
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return promAPI.LabelValues(context.Background(), label)
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}
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}
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doSeries := func(matcher string, startTime time.Time, endTime time.Time) func() (interface{}, error) {
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return func() (interface{}, error) {
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return queryAPI.Series(context.Background(), []string{matcher}, startTime, endTime)
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return promAPI.Series(context.Background(), []string{matcher}, startTime, endTime)
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}
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}
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doSnapshot := func(skipHead bool) func() (interface{}, error) {
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return func() (interface{}, error) {
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return promAPI.Snapshot(context.Background(), skipHead)
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}
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}
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doCleanTombstones := func() func() (interface{}, error) {
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return func() (interface{}, error) {
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return nil, promAPI.CleanTombstones(context.Background())
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}
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}
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doDeleteSeries := func(matcher string, startTime time.Time, endTime time.Time) func() (interface{}, error) {
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return func() (interface{}, error) {
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return nil, promAPI.DeleteSeries(context.Background(), []string{matcher}, startTime, endTime)
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}
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}
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@ -224,6 +242,73 @@ func TestAPIs(t *testing.T) {
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},
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err: fmt.Errorf("some error"),
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},
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{
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do: doSnapshot(true),
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inRes: map[string]string{
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"name": "20171210T211224Z-2be650b6d019eb54",
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},
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reqMethod: "POST",
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reqPath: "/api/v1/admin/tsdb/snapshot",
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reqParam: url.Values{
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"skip_head": []string{"true"},
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},
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res: SnapshotResult{
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Name: "20171210T211224Z-2be650b6d019eb54",
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},
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},
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{
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do: doSnapshot(true),
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inErr: fmt.Errorf("some error"),
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reqMethod: "POST",
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reqPath: "/api/v1/admin/tsdb/snapshot",
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err: fmt.Errorf("some error"),
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},
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{
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do: doCleanTombstones(),
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reqMethod: "POST",
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reqPath: "/api/v1/admin/tsdb/clean_tombstones",
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},
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{
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do: doCleanTombstones(),
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inErr: fmt.Errorf("some error"),
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reqMethod: "POST",
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reqPath: "/api/v1/admin/tsdb/clean_tombstones",
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err: fmt.Errorf("some error"),
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},
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{
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do: doDeleteSeries("up", testTime.Add(-time.Minute), testTime),
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inRes: []map[string]string{
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{
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"__name__": "up",
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"job": "prometheus",
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"instance": "localhost:9090"},
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},
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reqMethod: "POST",
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reqPath: "/api/v1/admin/tsdb/delete_series",
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reqParam: url.Values{
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"match": []string{"up"},
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"start": []string{testTime.Add(-time.Minute).Format(time.RFC3339Nano)},
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"end": []string{testTime.Format(time.RFC3339Nano)},
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},
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},
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{
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do: doDeleteSeries("up", testTime.Add(-time.Minute), testTime),
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inErr: fmt.Errorf("some error"),
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reqMethod: "POST",
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reqPath: "/api/v1/admin/tsdb/delete_series",
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reqParam: url.Values{
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"match": []string{"up"},
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"start": []string{testTime.Add(-time.Minute).Format(time.RFC3339Nano)},
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"end": []string{testTime.Format(time.RFC3339Nano)},
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},
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err: fmt.Errorf("some error"),
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},
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}
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var tests []apiTest
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