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package dynamodb |
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import ( |
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"context" |
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"fmt" |
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SDK "github.com/aws/aws-sdk-go-v2/service/dynamodb" |
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"github.com/evalphobia/aws-sdk-go-v2-wrapper/errors" |
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) |
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// BatchGetItem executes `BatchGetItem` operation. |
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func (svc *DynamoDB) BatchGetItem(ctx context.Context, r BatchGetItemRequest) (*BatchGetItemResult, error) { |
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out, err := svc.RawBatchGetItem(ctx, r.ToInput()) |
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if err == nil { |
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return NewBatchGetItemResult(out), nil |
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} |
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err = svc.errWrap(errors.ErrorData{ |
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Err: err, |
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AWSOperation: "BatchGetItem", |
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}) |
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svc.Errorf(err.Error()) |
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return nil, err |
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} |
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// BatchGetItemRequest has parameters for `BatchGetItem` operation. |
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type BatchGetItemRequest struct { |
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RequestItems map[string]KeysAndAttributes |
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// optional |
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ReturnConsumedCapacity ReturnConsumedCapacity |
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} |
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func (r BatchGetItemRequest) ToInput() *SDK.BatchGetItemInput { |
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in := &SDK.BatchGetItemInput{} |
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if len(r.RequestItems) != 0 { |
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m := make(map[string]SDK.KeysAndAttributes) |
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for key, val := range r.RequestItems { |
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m[key] = val.ToSDK() |
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} |
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in.RequestItems = m |
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} |
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in.ReturnConsumedCapacity = SDK.ReturnConsumedCapacity(r.ReturnConsumedCapacity) |
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return in |
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} |
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// BatchGetItemResult contains results from `BatchGetItem` operation. |
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type BatchGetItemResult struct { |
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ConsumedCapacity []ConsumedCapacity |
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Responses map[string][]map[string]SDK.AttributeValue // keep original type to reduce unmarshal cost |
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UnprocessedKeys map[string]KeysAndAttributes |
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} |
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func NewBatchGetItemResult(output *SDK.BatchGetItemResponse) *BatchGetItemResult { |
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r := &BatchGetItemResult{} |
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if output == nil { |
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return r |
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} |
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r.ConsumedCapacity = newConsumedCapacities(output.ConsumedCapacity) |
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r.Responses = output.Responses |
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r.UnprocessedKeys = make(map[string]KeysAndAttributes, len(output.UnprocessedKeys)) |
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for key, val := range output.UnprocessedKeys { |
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r.UnprocessedKeys[key] = newKeysAndAttributes(val) |
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} |
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return r |
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} |
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func (r BatchGetItemResult) ToSliceMap(tableName string) ([]map[string]interface{}, error) { |
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resp, ok := r.Responses[tableName] |
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if !ok { |
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return nil, fmt.Errorf("table name [%s] does not exists in the response", tableName) |
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} |
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return ToSliceMapValues(resp), nil |
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} |
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func (r BatchGetItemResult) Unmarshal(tableName string, out interface{}) error { |
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resp, ok := r.Responses[tableName] |
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if !ok { |
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return fmt.Errorf("table name [%s] does not exists in the response", tableName) |
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} |
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return RawUnmarshalAttributeValues(resp, out) |
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} |
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evalphobia /
aws-sdk-go-v2-wrapper
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