/// <summary>
/// Builds a CreateTableRequest object from an entity type marked up with the object model; other parameters
/// set table properties from that. Only supports string, number and byte array properties, others should
/// be unmarked. Generally, don't create a DBProperty unless you need to use in a Filter, and rely on
/// DynamoDb client library to figure out how to store.
/// We will default both throughput on tables and GSI to on demand if you don't provide them
/// We will default projections to all, if you don't provide them
/// </summary>
/// <param name="provisonedThroughput">What is the provisioned throughput for the table. Defaults to 10 read and write units</param>
/// <param name="gsiProjections">How are global secondary indexes projected; defaults to all</param>
/// <param name="billingMode">What billing mode (provisioned or request)</param>
/// <param name="sseSpecification"></param>
/// <param name="streamSpecification"></param>
/// <param name="tags"></param>
/// <typeparam name="T"></typeparam>
/// <returns></returns>
public CreateTableRequest GenerateCreateTableMapper <T>(
DynamoDbCreateProvisionedThroughput provisonedThroughput,
DynamoGSIProjections gsiProjections = null,
BillingMode billingMode = null,
SSESpecification sseSpecification = null,
StreamSpecification streamSpecification = null,
IEnumerable <Tag> tags = null)
{
var docType = typeof(T);
string tableName = GetTableName <T>(docType);
var createTableRequest = new CreateTableRequest(tableName, GetPrimaryKey <T>(docType).ToList());
AddTableProvisionedThrougput <T>(provisonedThroughput, createTableRequest);
createTableRequest.AttributeDefinitions.AddRange(GetAttributeDefinitions <T>(docType));
createTableRequest.GlobalSecondaryIndexes.AddRange(GetGlobalSecondaryIndices <T>(docType).Select(entry => entry.Value));
AddGSIProvisionedThroughput <T>(provisonedThroughput, createTableRequest);
AddGSIProjections(gsiProjections, createTableRequest);
createTableRequest.LocalSecondaryIndexes.AddRange(GetLocalSecondaryIndices <T>(docType));
createTableRequest.BillingMode = billingMode ?? BillingMode.PROVISIONED;
createTableRequest.SSESpecification = sseSpecification ?? new SSESpecification {
Enabled = true
};
createTableRequest.StreamSpecification = streamSpecification ?? new StreamSpecification {
StreamEnabled = true, StreamViewType = StreamViewType.NEW_IMAGE
};
createTableRequest.Tags = tags != null?tags.ToList() : new List <Tag>
{
new Tag {
Key = "outbox", Value = "brighter_outbox"
}
};
return(createTableRequest);
}
private void AddGSIProvisionedThroughput <T>(DynamoDbCreateProvisionedThroughput provisonedThroughput,
CreateTableRequest createTableRequest)
{
if (provisonedThroughput != null)
{
foreach (var globalSecondaryIndex in createTableRequest.GlobalSecondaryIndexes)
{
if (provisonedThroughput.GSIThroughputs.TryGetValue(globalSecondaryIndex.IndexName,
out ProvisionedThroughput gsiProvisonedThroughput))
{
globalSecondaryIndex.ProvisionedThroughput = gsiProvisonedThroughput;
}
else
{
globalSecondaryIndex.ProvisionedThroughput = new ProvisionedThroughput(OnDemand, OnDemand);
}
}
}
else
{
foreach (var globalSecondaryIndex in createTableRequest.GlobalSecondaryIndexes)
{
globalSecondaryIndex.ProvisionedThroughput = new ProvisionedThroughput(OnDemand, OnDemand);
}
}
}
public void When_Creating_A_Table_With_Provisioned_Throughput()
{
//arrange
var tableRequestFactory = new DynamoDbTableFactory();
var provisonedThroughput = new DynamoDbCreateProvisionedThroughput
(
table: new ProvisionedThroughput()
{
ReadCapacityUnits = 10, WriteCapacityUnits = 10
},
gsiThroughputs: new Dictionary <string, ProvisionedThroughput>()
{
{ "GlobalSecondaryIndex", new ProvisionedThroughput(readCapacityUnits: 11, writeCapacityUnits: 11) }
}
);
//act
CreateTableRequest tableRequest = tableRequestFactory.GenerateCreateTableMapper <DynamoDbEntity>(provisonedThroughput);
//assert
Assert.Equal(10, tableRequest.ProvisionedThroughput.ReadCapacityUnits);
Assert.Equal(10, tableRequest.ProvisionedThroughput.WriteCapacityUnits);
Assert.Equal(11, tableRequest.GlobalSecondaryIndexes.First(gsi => gsi.IndexName == "GlobalSecondaryIndex").ProvisionedThroughput.ReadCapacityUnits);
Assert.Equal(11, tableRequest.GlobalSecondaryIndexes.First(gsi => gsi.IndexName == "GlobalSecondaryIndex").ProvisionedThroughput.WriteCapacityUnits);
}
private void AddTableProvisionedThrougput <T>(DynamoDbCreateProvisionedThroughput provisonedThroughput,
CreateTableRequest createTableRequest)
{
if (provisonedThroughput != null)
{
createTableRequest.ProvisionedThroughput = provisonedThroughput.Table;
}
else
{
createTableRequest.ProvisionedThroughput = new ProvisionedThroughput(OnDemand, OnDemand);
}
}
