re
/
client_golang
forked from mirror/client_golang
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Implement admin methods for Prometheus API 

Signed-off-by: Bob Shannon <bshannon@palantir.com>
This commit is contained in:
Bob Shannon 2018-04-05 19:47:48 -04:00
parent f504d69aff
commit 10dfec77bf
2 changed files with 166 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

80
api/prometheus/v1/api.go
View File

@ -34,10 +34,13 @@ const (
apiPrefix = "/api/v1"
epQuery = apiPrefix + "/query"
epQueryRange = apiPrefix + "/query_range"
epLabelValues = apiPrefix + "/label/:name/values"
epSeries = apiPrefix + "/series"
epQuery = apiPrefix + "/query"
epQueryRange = apiPrefix + "/query_range"
epLabelValues = apiPrefix + "/label/:name/values"
epSeries = apiPrefix + "/series"
epSnapshot = apiPrefix + "/admin/tsdb/snapshot"
epDeleteSeries = apiPrefix + "/admin/tsdb/delete_series"
epCleanTombstones = apiPrefix + "/admin/tsdb/clean_tombstones"
)
// ErrorType models the different API error types.
@ -80,6 +83,13 @@ type API interface {
LabelValues(ctx context.Context, label string) (model.LabelValues, error)
// Series finds series by label matchers.
Series(ctx context.Context, matches []string, startTime time.Time, endTime time.Time) ([]model.LabelSet, error)
// Snapshot creates a snapshot of all current data into snapshots/<datetime>-<rand>
// under the TSDB's data directory and returns the directory as response.
Snapshot(ctx context.Context, skipHead bool) (SnapshotResult, error)
// DeleteSeries deletes data for a selection of series in a time range.
DeleteSeries(ctx context.Context, matches []string, startTime time.Time, endTime time.Time) error
// CleanTombstones removes the deleted data from disk and cleans up the existing tombstones.
CleanTombstones(ctx context.Context) error
}
// queryResult contains result data for a query.
@ -91,6 +101,11 @@ type queryResult struct {
v model.Value
}
// SnapshotResult contains result data for a snapshot.
type SnapshotResult struct {
Name string
}
func (qr *queryResult) UnmarshalJSON(b []byte) error {
v := struct {
Type model.ValueType `json:"resultType"`
@ -238,6 +253,63 @@ func (h *httpAPI) Series(ctx context.Context, matches []string, startTime time.T
return mset, err
}
func (h *httpAPI) Snapshot(ctx context.Context, skipHead bool) (SnapshotResult, error) {
u := h.client.URL(epSnapshot, nil)
q := u.Query()
q.Set("skip_head", strconv.FormatBool(skipHead))
u.RawQuery = q.Encode()
req, err := http.NewRequest(http.MethodPost, u.String(), nil)
if err != nil {
return SnapshotResult{}, err
}
_, body, err := h.client.Do(ctx, req)
if err != nil {
return SnapshotResult{}, err
}
var res SnapshotResult
err = json.Unmarshal(body, &res)
return res, err
}
func (h *httpAPI) DeleteSeries(ctx context.Context, matches []string, startTime time.Time, endTime time.Time) error {
u := h.client.URL(epDeleteSeries, nil)
q := u.Query()
for _, m := range matches {
q.Add("match[]", m)
}
q.Set("start", startTime.Format(time.RFC3339Nano))
q.Set("end", endTime.Format(time.RFC3339Nano))
u.RawQuery = q.Encode()
req, err := http.NewRequest(http.MethodPost, u.String(), nil)
if err != nil {
return err
}
_, _, err = h.client.Do(ctx, req)
return err
}
func (h *httpAPI) CleanTombstones(ctx context.Context) error {
u := h.client.URL(epCleanTombstones, nil)
req, err := http.NewRequest(http.MethodPost, u.String(), nil)
if err != nil {
return err
}
_, _, err = h.client.Do(ctx, req)
return err
}
// apiClient wraps a regular client and processes successful API responses.
// Successful also includes responses that errored at the API level.
type apiClient struct {

95
api/prometheus/v1/api_test.go
View File

@ -90,31 +90,49 @@ func TestAPIs(t *testing.T) {
client := &apiTestClient{T: t}
queryAPI := &httpAPI{
promAPI := &httpAPI{
client: client,
}
doQuery := func(q string, ts time.Time) func() (interface{}, error) {
return func() (interface{}, error) {
return queryAPI.Query(context.Background(), q, ts)
return promAPI.Query(context.Background(), q, ts)
}
}
doQueryRange := func(q string, rng Range) func() (interface{}, error) {
return func() (interface{}, error) {
return queryAPI.QueryRange(context.Background(), q, rng)
return promAPI.QueryRange(context.Background(), q, rng)
}
}
doLabelValues := func(label string) func() (interface{}, error) {
return func() (interface{}, error) {
return queryAPI.LabelValues(context.Background(), label)
return promAPI.LabelValues(context.Background(), label)
}
}
doSeries := func(matcher string, startTime time.Time, endTime time.Time) func() (interface{}, error) {
return func() (interface{}, error) {
return queryAPI.Series(context.Background(), []string{matcher}, startTime, endTime)
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)
}
}
doCleanTombstones := func() func() (interface{}, error) {
return func() (interface{}, error) {
return nil, promAPI.CleanTombstones(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)
}
}
@ -224,6 +242,73 @@ func TestAPIs(t *testing.T) {
},
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"),
},
}
var tests []apiTest