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https://github.com/grafana/grafana.git
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19d01dff91
* Create historian metrics and dependency inject * Record counter for total number of state transitions logged * Track write failures * Track current number of active write goroutines * Record histogram of how long it takes to write history data * Don't copy the registerer * Adjust naming of write failures metric * Introduce WritesTotal to complement WritesFailedTotal * Measure TransitionsFailedTotal to complement TransitionsTotal * Rename all to state_history * Remove redundant Total suffix * Increment totals all the time, not just on success * Drop ActiveWriteGoroutines * Drop PersistDuration in favor of WriteDuration * Drop unused gauge * Make writes and writesFailed per org * Add metric indicating backend and a spot for future metadata * Drop _batch_ from names and update help * Add metric for bytes written * Better pairing of total + failure metric updates * Few tweaks to wording and naming * Record info metric during composition * Create fakeRequester and simple happy path test using it * Blocking test for the full historian and test for happy path metrics * Add tests for failure case metrics * Smoke test for full annotation persistence * Create test for metrics on annotation persistence, both happy and failing paths * Address linter complaints * More linter complaints * Remove unnecessary whitespace * Consistency improvements to help texts * Update tests to match new descs
50 lines
1.1 KiB
Go
50 lines
1.1 KiB
Go
package historian
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import (
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"bytes"
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"context"
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"fmt"
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"io"
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"net/http"
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"github.com/grafana/grafana/pkg/services/annotations"
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)
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type fakeRequester struct {
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lastRequest *http.Request
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resp *http.Response
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}
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func NewFakeRequester() *fakeRequester {
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return &fakeRequester{
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resp: &http.Response{
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Status: "200 OK",
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StatusCode: 200,
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Body: io.NopCloser(bytes.NewBufferString("")),
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ContentLength: int64(0),
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Header: make(http.Header, 0),
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},
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}
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}
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func (f *fakeRequester) WithResponse(resp *http.Response) *fakeRequester {
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f.resp = resp
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return f
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}
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func (f *fakeRequester) Do(req *http.Request) (*http.Response, error) {
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f.lastRequest = req
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f.resp.Request = req // Not concurrency-safe!
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return f.resp, nil
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}
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type failingAnnotationRepo struct{}
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func (f *failingAnnotationRepo) SaveMany(_ context.Context, _ []annotations.Item) error {
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return fmt.Errorf("failed to save annotations")
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}
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func (f *failingAnnotationRepo) Find(_ context.Context, _ *annotations.ItemQuery) ([]*annotations.ItemDTO, error) {
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return nil, fmt.Errorf("failed to query annotations")
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}
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