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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,94 @@ | ||
| package s3spanstore | ||
|
|
||
| import ( | ||
| "context" | ||
| "fmt" | ||
| "strings" | ||
| "sync" | ||
| "time" | ||
|
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| "github.com/aws/aws-sdk-go-v2/service/athena" | ||
| "github.com/aws/aws-sdk-go-v2/service/athena/types" | ||
| "golang.org/x/sync/errgroup" | ||
| ) | ||
|
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| type AthenaQueryCache struct { | ||
| svc AthenaAPI | ||
| workGroup string | ||
| } | ||
|
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| func NewAthenaQueryCache(svc AthenaAPI, workGroup string) *AthenaQueryCache { | ||
| return &AthenaQueryCache{svc: svc, workGroup: workGroup} | ||
| } | ||
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| func (c *AthenaQueryCache) Lookup(ctx context.Context, key string, ttl time.Duration) (*types.QueryExecution, error) { | ||
| paginator := athena.NewListQueryExecutionsPaginator(c.svc, &athena.ListQueryExecutionsInput{ | ||
| WorkGroup: &c.workGroup, | ||
| }) | ||
| queryExecutionIds := []string{} | ||
| for paginator.HasMorePages() { | ||
| output, err := paginator.NextPage(ctx) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("failed to get athena query result: %w", err) | ||
| } | ||
|
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| queryExecutionIds = append(queryExecutionIds, output.QueryExecutionIds...) | ||
| } | ||
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| queryExecutionIdChunks := chunks(queryExecutionIds, 50) | ||
| g, getQueryExecutionCtx := errgroup.WithContext(ctx) | ||
|
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| ttlTime := time.Now().Add(-ttl) | ||
| var mu sync.Mutex | ||
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| var latestQueryExecution *types.QueryExecution | ||
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| for _, value := range queryExecutionIdChunks { | ||
| value := value | ||
| g.Go(func() error { | ||
| result, err := c.svc.BatchGetQueryExecution(getQueryExecutionCtx, &athena.BatchGetQueryExecutionInput{ | ||
| QueryExecutionIds: value, | ||
| }) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
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| for _, v := range result.QueryExecutions { | ||
| // Different query | ||
| if !strings.Contains(*v.Query, key) { | ||
| continue | ||
| } | ||
|
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| // Query didn't completed | ||
| if v.Status.CompletionDateTime == nil { | ||
| continue | ||
| } | ||
|
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| // Query already expired | ||
| if v.Status.CompletionDateTime.Before(ttlTime) { | ||
| continue | ||
| } | ||
|
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| mu.Lock() | ||
|
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| // Store the latest query result | ||
| if latestQueryExecution == nil { | ||
| latestQueryExecution = &v | ||
| } else { | ||
| if v.Status.CompletionDateTime.After(*latestQueryExecution.Status.CompletionDateTime) { | ||
| latestQueryExecution = &v | ||
| } | ||
| } | ||
|
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| mu.Unlock() | ||
| } | ||
|
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| return nil | ||
| }) | ||
| } | ||
| if err := g.Wait(); err != nil { | ||
| return nil, err | ||
| } | ||
|
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| return latestQueryExecution, nil | ||
| } |
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