dynamo

What's Changed

• Bug fix for included attributes in CreateTable @blck-snwmn in https://github.com/guregu/dynamo/pull/211
• Remove github.com/gofrs/uuid as a dependency by @danielwhite in https://github.com/guregu/dynamo/pull/210
• Update AWS SDK

New Contributors

• @blck-snwmn made their first contribution in https://github.com/guregu/dynamo/pull/211
• @danielwhite made their first contribution in https://github.com/guregu/dynamo/pull/210

Full Changelog: https://github.com/guregu/dynamo/compare/v1.18.0...v1.18.1

This release adds projection support for batch gets and updates the AWS dependencies.

What's Changed

• Add Project method for BatchGet by @nightlord189 in https://github.com/guregu/dynamo/pull/209

New Contributors

• @nightlord189 made their first contribution in https://github.com/guregu/dynamo/pull/209

Full Changelog: https://github.com/guregu/dynamo/compare/v1.17.0...v1.18.0

This release adds automatic retrying behavior to transactions. See: #203.

What's Changed

• Automatically retry transactions (#204)
• Add IsCondCheckFailed function for working with conditional check failed errors

Full Changelog: https://github.com/guregu/dynamo/compare/v1.16.0...v1.17.0

What's Changed

• Adding allowemptyelem support for nested maps and slices by @veedubyou in https://github.com/guregu/dynamo/pull/200 (fixes #199)

New Contributors

• @veedubyou made their first contribution in https://github.com/guregu/dynamo/pull/200

Full Changelog: https://github.com/guregu/dynamo/compare/v1.15.1...v1.16.0

What's Changed

• Fix map fields not getting cleared on unmarshal by @guregu in https://github.com/guregu/dynamo/pull/196
  • regression from v1.12.0, prior versions not affected

Full Changelog: https://github.com/guregu/dynamo/compare/v1.15.0...v1.15.1

Summary

This release adds table waiters (#52 via #193).

• CreateTable.Wait() creates the table, then blocks until the table is active
• DeleteTable.Wait() deletes the table, then blocks until the table is finished deleting
• Table.Wait(...) blocks until the table's status matches one of the arguments (for custom waiting purposes)

Example

// blocks until table is ready to use
if err := db.CreateTable(name, Widget{}).Wait(); err != nil {
	panic(err)
}

// blocks until table is finished deleting
if err := db.Table(name).DeleteTable().Wait(); err != nil {
	panic(err)
}

What's Changed

• add table waiters by @guregu in https://github.com/guregu/dynamo/pull/193

Full Changelog: https://github.com/guregu/dynamo/compare/v1.14.0...v1.15.0

Summary

This release adds a new type, ExpressionLiteral (#192). It represents a raw DynamoDB expression and placeholders, using the same data types as the official AWS package. You can pass this as a parameter to any method that takes an expression. Both $ and ? will work as variables. dynamo will automatically merge your placeholders with its own, so you can use this in tandem with the rest of the library.
Some use cases include porting projects from the official SDK, and passing around search parameters in APIs.
Be careful, using this is akin to manipulating SQL queries with string concatenation. Make sure you know what you're doing if you use it. Only reach for this hammer when the regular APIs don't cut it.

Example

lit := dynamo.ExpressionLiteral{
	Expression: "#meta.#foo = :bar",
	AttributeNames: aws.StringMap(map[string]string{
		"#meta": "Meta",
		"#foo":  "foo",
	}),
	AttributeValues: map[string]*dynamodb.AttributeValue{
		":bar": {S: aws.String("bar")},
	},
}

err := table.Get("UserID", 42).
	Filter("?", lit). // $ also works. 
	All(&result)

What's Changed

• add ExpressionLiteral for passing in raw expressions and placeholders by @guregu in https://github.com/guregu/dynamo/pull/192

Full Changelog: https://github.com/guregu/dynamo/compare/v1.13.0...v1.14.0

Summary

• Add server-side encryption (SSE) support in CreateTable and DescribeTable #189 (thanks @TigerToof!)
• Tweak the logic for inferring the table's primary keys PagingIter.LastEvaluatedKey #191
  • This change can better avoid calling DescribeTable depending on your usage.
  • Errors from DescribeTable (such as insufficient permissions) will be treated as warnings, falling back to pre-v1.12.0 behavior.
    • See: https://github.com/guregu/dynamo/pull/187#issuecomment-1045183901
• Warnings now use the logger configured in aws.Config instead of the standard library default.

What's Changed

• Add SSESpecification option to CreateTable by @TigerToof in https://github.com/guregu/dynamo/pull/189
• lazier LastEvaluatedKey inference by @guregu in https://github.com/guregu/dynamo/pull/191

New Contributors

• @TigerToof made their first contribution in https://github.com/guregu/dynamo/pull/189

Full Changelog: https://github.com/guregu/dynamo/compare/v1.12.0...v1.13.0

Summary

• This release fixes two issues:
  • #186 LastEvaluatedKey may point unexpected position in case Limit is set to Query
  • #181 UnmarshalItem does not work with the auxiliary types
• Also upgrades dependencies.

What's Changed

• virtual PagingIter.LastEvaluatedKey by @guregu in https://github.com/guregu/dynamo/pull/187
• improve embedded struct decoding, fixing aux unmarshaling by @guregu in https://github.com/guregu/dynamo/pull/188
• Upgrade backoff to backoff/v4 by @pquerna in https://github.com/guregu/dynamo/pull/180

New Contributors

• @dnagir provided some very helpful test cases in https://github.com/guregu/dynamo/issues/181
• @pquerna made their first contribution in https://github.com/guregu/dynamo/pull/180

Full Changelog: https://github.com/guregu/dynamo/compare/v1.11.0...v1.12.0

This release integrates lots of pull requests from the community. Thanks for the PRs, everyone.

• Iterators check if the context is canceled #166 (@jkawamoto)
• Allow endpoints to be specified by environment DYNAMO_TEST_ENDPOINT variables on testing #173 (@ken39arg)
• Housekeeping: #167 #168 #169 #170 (@mlafeldt)

Although this PR doesn't add any shiny new functionality, it introduces a new error called ErrNoInput that is returned if you use the batch/transaction APIs without providing it any input. See #174.

This is a bugfix release that resolves an issue where BatchGet would return ErrNotFound early upon encountering an empty set of 100 results (#161). Thanks @Dave-Dohmeier!

This is a bugfix release that fixes #158, in which expressions like (A) OR (B) were not getting properly wrapped to ((A) OR (B)) when combined with multiple .If calls, etc.
Also includes #157 which fixes ListTables's context methods not passing the context through to the AWS SDK.

This is a bugfix release that fixes Update.Set's behavior when given an empty typed string value (#151). Instead of removing the empty value, it was encoding an invalid request resulting in a SerializationException. Thanks to @finnbear for discovering and triaging the issue.

This is a minor release that fixes an issue with decoding number sets (#150). Thanks to @aoldershaw for the contribution.

This release adds Update.DeleteFromSet which can be useful for deleting values from sets not covered by the pre-existing helper methods (#146). Also, Update.OnlyUpdatedValue and Update.OnlyUpdatedOldValue have been added, which are the equivalents of UPDATED_NEW and UPDATED_OLD and encode only the values that have been changed from an update (#142).

AWSEncoding support has been improved (#147). You can now use it with methods that operate on slices, such as:

var list []myAWSEncodedStuff
table.Get("UserID", 123).All(dynamo.AWSEncoding(&list))

This release also bumps up aws-sdk-go to the latest version.
Thanks to everyone who reported issues and sent PRs, and to everyone who uses this library.

This release adds support for embedding struct pointers (#139) and avoids panicking when trying to unmarshal to private fields. Thanks @gir for the contribution.

This release improves and extends many areas of the encoder, improving support for empty and null values and fixing some important issues.
We can now take advantage of DynamoDB's support for empty strings and binary attributes!

• Added support for empty/null values in DynamoDB lists (slices and arrays) and sets (slices or maps with the dynamo:",set" struct tag option). By default, empty strings and binary values are encoded as-is, and nil pointers are set to a DynamoDB NULL type. Previously these cases were a SerializationException. Fixes #102 and #137.
  • Added a new struct tag option dynamo:",omitemptyelem" that omits these values instead. Note that this will mess up your array indexes.
• Added a new struct tag option dynamo:",allowempty" to disable auto-omit behavior for empty string or binary field values. Keep in mind that primary keys can't be empty.
• Added a new struct tag option dynamo:",allowemptyelem" to disable auto-omit behavior for empty string, empty binary, and nil values in maps.
• Added a new struct tag option dynamo:",null" that will marshal nil or empty values to DynamoDB NULL types. When allowempty is also set, allowempty will take precedence.
• Added Update.SetNullable which is Update.Set without automatic empty/nil removal.
• Added support for empty/nil arguments in If and Filter.
• Added support for custom empty structs in sets: #133, thanks @finnbear.
• Docs improvements: #123, #136. Thanks @ZacharyGroff and @d-tsuji.

This release should have total backwards compatibility with previous versions. New support for empty/nil values was added in areas that were previously serialization errors. Auto-omit behavior was kept the same, but now you can use allowempty and allowemptyelem to disable it.

Example:

var widget = struct {
	HashKey string
	Desc    string `dynamo:",allowempty"`
	Words   []string
	Ptr     *int `dynamo:",null"`
}{
	HashKey: "abc",
	Desc:    "",
	Words:   []string{"hello", "world", ""},
	Ptr:     nil,
}

will be marshaled like so

{
	HashKey: {S: "abc"},
	Desc: {S: ""},
	Words: {L: [{S: "hello"}, {S: "world"} {S: ""}]},
	Ptr: {NULL: true},
}

Big thanks to everyone who submitted issues and PRs, and all the users of this library.

This release adds ItemMarshaler and ItemUnmarshaler, which are interfaces allowing for total control of item marshaling. This is useful for handling dynamic items whose structure depends on its content. Thanks to @luma for submitting this in PR #126!

// ItemMarshaler is the interface implemented by objects that
// can marshal themselves into an Item (a map of strings
// to AttributeValues).
type ItemMarshaler interface {
	MarshalDynamoItem() (map[string]*dynamodb.AttributeValue, error)
}

// ItemUnmarshaler is the interface implemented by
// objects that can unmarshal an Item (a map of strings
//to AttributeValues) into themselves.
type ItemUnmarshaler interface {
	UnmarshalDynamoItem(item map[string]*dynamodb.AttributeValue) error
}

This release fixes a bug where AWSEncoding items were not being (un)marshaled properly in Put, Get, etc (#125).
The module dependency on aws-sdk-go was also updated to the latest version.

This release fixes unmarshaling to return an error when unmarshaling a DynamoDB list into an array that is too small.
See notes for v1.7.1, which includes a similar fix for DynamoDB binary data.