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fix concurrent map writes

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This commit is contained in:
Mitsuhiro Tanda 2018-10-16 11:39:10 +09:00
parent f4b7b003be
commit 48aef0c50e
1 changed files with 16 additions and 10 deletions
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26
pkg/tsdb/cloudwatch/cloudwatch.go
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@ -86,9 +86,10 @@ func (e *CloudWatchExecutor) Query(ctx context.Context, dsInfo *models.DataSourc
}
func (e *CloudWatchExecutor) executeTimeSeriesQuery(ctx context.Context, queryContext *tsdb.TsdbQuery) (*tsdb.Response, error) {
result := &tsdb.Response{
results := &tsdb.Response{
Results: make(map[string]*tsdb.QueryResult),
}
resultChan := make(chan *tsdb.QueryResult, len(queryContext.Queries))
eg, ectx := errgroup.WithContext(ctx)
@ -102,10 +103,10 @@ func (e *CloudWatchExecutor) executeTimeSeriesQuery(ctx context.Context, queryCo
RefId := queryContext.Queries[i].RefId
query, err := parseQuery(queryContext.Queries[i].Model)
if err != nil {
result.Results[RefId] = &tsdb.QueryResult{
results.Results[RefId] = &tsdb.QueryResult{
Error: err,
}
return result, nil
return results, nil
}
query.RefId = RefId
@ -118,10 +119,10 @@ func (e *CloudWatchExecutor) executeTimeSeriesQuery(ctx context.Context, queryCo
}
if query.Id == "" && query.Expression != "" {
result.Results[query.RefId] = &tsdb.QueryResult{
results.Results[query.RefId] = &tsdb.QueryResult{
Error: fmt.Errorf("Invalid query: id should be set if using expression"),
}
return result, nil
return results, nil
}
eg.Go(func() error {
@ -130,12 +131,13 @@ func (e *CloudWatchExecutor) executeTimeSeriesQuery(ctx context.Context, queryCo
return err
}
if err != nil {
result.Results[query.RefId] = &tsdb.QueryResult{
resultChan <- &tsdb.QueryResult{
RefId: query.RefId,
Error: err,
}
return nil
}
result.Results[queryRes.RefId] = queryRes
resultChan <- queryRes
return nil
})
}
@ -149,10 +151,10 @@ func (e *CloudWatchExecutor) executeTimeSeriesQuery(ctx context.Context, queryCo
return err
}
for _, queryRes := range queryResponses {
result.Results[queryRes.RefId] = queryRes
if err != nil {
result.Results[queryRes.RefId].Error = err
queryRes.Error = err
}
resultChan <- queryRes
}
return nil
})
@ -162,8 +164,12 @@ func (e *CloudWatchExecutor) executeTimeSeriesQuery(ctx context.Context, queryCo
if err := eg.Wait(); err != nil {
return nil, err
}
close(resultChan)
for result := range resultChan {
results.Results[result.RefId] = result
}
return result, nil
return results, nil
}
func (e *CloudWatchExecutor) executeQuery(ctx context.Context, query *CloudWatchQuery, queryContext *tsdb.TsdbQuery) (*tsdb.QueryResult, error) {