// GetByEmail retrieves a user by e-mail with OK indicator.
func (db *DynamoDB) GetByEmail(email string) (u *models.User, ok bool) {
res, err := db.DB.Query(&dynamodb.QueryInput{
// ConsistentRead: aws.Bool(true),
TableName: aws.String("users"),
IndexName: aws.String("Email"),
Select: aws.String("ALL_ATTRIBUTES"),
KeyConditionExpression: aws.String("Email = :Email"),
ExpressionAttributeValues: map[string]*dynamodb.AttributeValue{
":Email": {
S: aws.String(email),
},
},
})
if err != nil {
log.Printf("dynamodb: getbymail error: %v", err)
return nil, false
}
var user models.User
if err := dynamodbattribute.UnmarshalMap(res.Items[0], &user); err != nil {
log.Printf("dynamodb: getbyid error: %v", err)
return nil, false
}
return &user, true
}
// GetByID retrieves a user by ID with OK indicator.
func (db *DynamoDB) GetByID(id string) (u *models.User, ok bool) {
res, err := db.DB.GetItem(&dynamodb.GetItemInput{
ConsistentRead: aws.Bool(true),
TableName: aws.String("users"),
Key: map[string]*dynamodb.AttributeValue{
"ID": {
S: aws.String(id),
},
},
})
if err != nil {
log.Printf("dynamodb: error: %v", err)
return nil, false
}
if len(res.Item) == 0 {
return nil, false
}
var user models.User
if err := dynamodbattribute.UnmarshalMap(res.Item, &user); err != nil {
log.Printf("dynamodb: getbyid error: %v", err)
return nil, false
}
return &user, true
}
// Load loads all events for the aggregate id from the database.
// Returns ErrNoEventsFound if no events can be found.
func (s *EventStore) Load(id eh.UUID) ([]eh.Event, error) {
params := &dynamodb.QueryInput{
TableName: aws.String(s.config.Table),
KeyConditionExpression: aws.String("AggregateID = :id"),
ExpressionAttributeValues: map[string]*dynamodb.AttributeValue{
":id": {S: aws.String(id.String())},
},
ConsistentRead: aws.Bool(true),
}
resp, err := s.service.Query(params)
if err != nil {
return nil, err
}
if len(resp.Items) == 0 {
return []eh.Event{}, nil
}
eventRecords := make([]*eventRecord, len(resp.Items))
for i, item := range resp.Items {
record := &eventRecord{}
if err := dynamodbattribute.UnmarshalMap(item, record); err != nil {
return nil, err
}
eventRecords[i] = record
}
events := make([]eh.Event, len(eventRecords))
for i, record := range eventRecords {
// Create an event of the correct type.
event, err := eh.CreateEvent(record.EventType)
if err != nil {
return nil, err
}
if err := dynamodbattribute.UnmarshalMap(record.Payload, event); err != nil {
// return nil, ErrCouldNotUnmarshalEvent
return nil, err
}
events[i] = event
}
return events, nil
}
func main() {
dynamo.HandleFunc(func(event *dynamo.Event, ctx *apex.Context) error {
// Iterate all event records
for _, record := range event.Records {
// only act on INSERTs
if record.EventName == "INSERT" {
n := newImage{}
// Unmarshal the data for NewImage
dynamodbattribute.UnmarshalMap(record.Dynamodb.NewImage, &n)
// Print the example attribute. (Don't do this in your function!)
fmt.Println(n.ExampleKey)
}
}
return nil
})
}