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package dynamodb |
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import ( |
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"context" |
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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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"github.com/evalphobia/aws-sdk-go-v2-wrapper/private/pointers" |
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) |
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// GetItem executes `GetItem` operation. |
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func (svc *DynamoDB) GetItem(ctx context.Context, r GetItemRequest) (*GetItemResult, error) { |
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out, err := svc.RawGetItem(ctx, r.ToInput()) |
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if err == nil { |
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return NewGetItemResult(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: "GetItem", |
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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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// GetItemRequest has parameters for `GetItem` operation. |
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type GetItemRequest struct { |
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TableName string |
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Key map[string]AttributeValue |
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// optional |
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AttributesToGet []string |
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ConsistentRead bool |
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ExpressionAttributeNames map[string]string |
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ProjectionExpression string |
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ReturnConsumedCapacity ReturnConsumedCapacity |
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} |
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func (r GetItemRequest) ToInput() *SDK.GetItemInput { |
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in := &SDK.GetItemInput{} |
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if r.TableName != "" { |
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in.TableName = pointers.String(r.TableName) |
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} |
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if len(r.Key) != 0 { |
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m := make(map[string]SDK.AttributeValue, len(r.Key)) |
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for key, val := range r.Key { |
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m[key] = val.ToSDK() |
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} |
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in.Key = m |
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} |
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in.AttributesToGet = r.AttributesToGet |
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if r.ConsistentRead { |
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in.ConsistentRead = pointers.Bool(r.ConsistentRead) |
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} |
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in.ExpressionAttributeNames = r.ExpressionAttributeNames |
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if r.ProjectionExpression != "" { |
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in.ProjectionExpression = pointers.String(r.ProjectionExpression) |
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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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// GetItemResult contains results from `GetItem` operation. |
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type GetItemResult struct { |
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ConsumedCapacity ConsumedCapacity |
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Item map[string]AttributeValue |
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} |
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func NewGetItemResult(output *SDK.GetItemResponse) *GetItemResult { |
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r := &GetItemResult{} |
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if output == nil { |
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return r |
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} |
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if output.ConsumedCapacity != nil { |
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r.ConsumedCapacity = newConsumedCapacity(*output.ConsumedCapacity) |
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} |
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r.Item = newAttributeValueMap(output.Item) |
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return r |
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} |
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evalphobia /
aws-sdk-go-v2-wrapper
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