-
Notifications
You must be signed in to change notification settings - Fork 4
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
explain query
- Loading branch information
Showing
4 changed files
with
183 additions
and
7 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,147 @@ | ||
| package logqlengine | ||
|
|
||
| import ( | ||
| "context" | ||
| "fmt" | ||
| "slices" | ||
| "sync" | ||
| "time" | ||
|
|
||
| "github.com/go-faster/sdk/zctx" | ||
| "go.uber.org/zap" | ||
| "go.uber.org/zap/zapcore" | ||
|
|
||
| "github.com/go-faster/oteldb/internal/lokiapi" | ||
| ) | ||
|
|
||
| type explainLogs struct { | ||
| entries []lokiapi.LogEntry | ||
| mux sync.Mutex | ||
| } | ||
|
|
||
| func (e *explainLogs) InjectLogger(ctx context.Context) context.Context { | ||
| lg := zctx.From(ctx).WithOptions( | ||
| zap.WrapCore(func(c zapcore.Core) zapcore.Core { | ||
| return zapcore.NewTee(c, e.Core()) | ||
| }), | ||
| ) | ||
| return zctx.Base(ctx, lg.Named("explain")) | ||
| } | ||
|
|
||
| func (e *explainLogs) Core() zapcore.Core { | ||
| return &explainCore{ | ||
| enc: zapcore.NewConsoleEncoder(zap.NewDevelopmentEncoderConfig()), | ||
| with: nil, | ||
| logs: e, | ||
| } | ||
| } | ||
|
|
||
| func (e *explainLogs) Data() lokiapi.QueryResponseData { | ||
| e.mux.Lock() | ||
| defer e.mux.Unlock() | ||
|
|
||
| stream := lokiapi.Stream{ | ||
| Stream: lokiapi.NewOptLabelSet(lokiapi.LabelSet{"log": "explain"}), | ||
| Values: e.entries, | ||
| } | ||
|
|
||
| return lokiapi.QueryResponseData{ | ||
| Type: lokiapi.StreamsResultQueryResponseData, | ||
| StreamsResult: lokiapi.StreamsResult{ | ||
| Result: lokiapi.Streams{stream}, | ||
| }, | ||
| } | ||
| } | ||
|
|
||
| func (e *explainLogs) Push(entry lokiapi.LogEntry) { | ||
| e.mux.Lock() | ||
| defer e.mux.Unlock() | ||
|
|
||
| e.entries = append(e.entries, entry) | ||
| } | ||
|
|
||
| type explainCore struct { | ||
| enc zapcore.Encoder | ||
| with []zapcore.Field | ||
| logs *explainLogs | ||
| } | ||
|
|
||
| var _ zapcore.Core = (*explainCore)(nil) | ||
|
|
||
| func (t *explainCore) Enabled(zapcore.Level) bool { | ||
| return true | ||
| } | ||
|
|
||
| // With adds structured context to the Core. | ||
| func (t *explainCore) With(fields []zapcore.Field) zapcore.Core { | ||
| return &explainCore{ | ||
| enc: t.enc.Clone(), | ||
| with: append(slices.Clone(t.with), fields...), | ||
| logs: t.logs, | ||
| } | ||
| } | ||
|
|
||
| // Check determines whether the supplied Entry should be logged (using the | ||
| // embedded LevelEnabler and possibly some extra logic). If the entry | ||
| // should be logged, the Core adds itself to the CheckedEntry and returns | ||
| // the result. | ||
| // | ||
| // Callers must use Check before calling Write. | ||
| func (t *explainCore) Check(ent zapcore.Entry, ce *zapcore.CheckedEntry) *zapcore.CheckedEntry { | ||
| return ce.AddCore(ent, t) | ||
| } | ||
|
|
||
| // Write serializes the Entry and any Fields supplied at the log site and | ||
| // writes them to their destination. | ||
| // | ||
| // If called, Write should always log the Entry and Fields; it should not | ||
| // replicate the logic of Check. | ||
| func (t *explainCore) Write(e zapcore.Entry, fields []zapcore.Field) error { | ||
| buf, err := t.enc.EncodeEntry(e, fields) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| t.logs.Push(lokiapi.LogEntry{ | ||
| T: uint64(e.Time.UnixNano()), | ||
| V: buf.String(), | ||
| }) | ||
| return nil | ||
| } | ||
|
|
||
| // Sync flushes buffered logs (if any). | ||
| func (t *explainCore) Sync() error { | ||
| return nil | ||
| } | ||
|
|
||
| // ExplainQuery is simple Explain expression query. | ||
| type ExplainQuery struct { | ||
| Explain Query | ||
|
|
||
| logs *explainLogs | ||
| } | ||
|
|
||
| var _ Query = (*ExplainQuery)(nil) | ||
|
|
||
| // Eval implements [Query]. | ||
| func (q *ExplainQuery) Eval(ctx context.Context, params EvalParams) (lokiapi.QueryResponseData, error) { | ||
| ctx = q.logs.InjectLogger(ctx) | ||
| lg := zctx.From(ctx) | ||
|
|
||
| var ( | ||
| start = time.Now() | ||
| resultField zap.Field | ||
| ) | ||
| data, err := q.Explain.Eval(ctx, params) | ||
| if err != nil { | ||
| resultField = zap.Error(err) | ||
| } else { | ||
| resultField = zap.String("data_type", string(data.Type)) | ||
| } | ||
| lg.Debug("Evaluated query", | ||
| zap.String("query_type", fmt.Sprintf("%T", q.Explain)), | ||
| resultField, | ||
| zap.Duration("took", time.Since(start)), | ||
| ) | ||
|
|
||
| return q.logs.Data(), nil | ||
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters