func GetItemFromDynamoDb(svc *dynamodb.DynamoDB, productId string) string {
params := &dynamodb.GetItemInput{
Key: map[string]*dynamodb.AttributeValue{ // Required
"productId": { // Required
S: aws.String(productId),
},
// More values...
},
TableName: aws.String("ProductRecommendation"), // Required
AttributesToGet: []*string{
aws.String("boughtTogether"), // Required
// More values...
},
ConsistentRead: aws.Bool(true),
/*
ExpressionAttributeNames: map[string]*string{
"Key": aws.String("AttributeName"), // Required
// More values...
},
ProjectionExpression: aws.String("ProjectionExpression"),
ReturnConsumedCapacity: aws.String("ReturnConsumedCapacity"),
*/
}
resp, err := svc.GetItem(params)
if err != nil {
// Print the error, cast err to awserr.Error to get the Code and
// Message from an error.
glog.Errorln(err.Error())
return "failed to query DynamoDb"
}
// Pretty-print the response data.
return *resp.Item["boughtTogether"].S
}
func getRecord(svc *dynamodb.DynamoDB, tableName string, key string) {
params := &dynamodb.GetItemInput{
Key: map[string]*dynamodb.AttributeValue{
"key": {
S: aws.String(key),
},
},
TableName: aws.String(tableName),
}
_, err := svc.GetItem(params)
if err != nil {
fmt.Println(err.Error())
return
}
}
func retrieveItem(db *dynamodb.DynamoDB) error {
var _, err = db.GetItem(getItemInput())
return err
}