loader

package
v0.0.0-...-c72a9d5 Latest Latest
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 Go to latest Published: May 27, 2019 License: MIT Imports: 7 Imported by: 0

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Constants

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Variables

This section is empty.

Functions

func LoadUser 

func LoadUser(ctx context.Context, id uuid.UUID) (model.User, error)

Types

type Collection 

type Collection struct {
	// contains filtered or unexported fields
}

Collection holds an internal lookup of initialized batch data load functions.

func Initialize 

func Initialize() Collection

Initialize a lookup map of context keys to batch functions.

When Attach is called on the Collection, the batch functions are used to create new dataloader instances. The instances are attached to the request context at the provided keys.

The keys are then used to extract the dataloader instances from the request context.

func (Collection) Attach 

func (c Collection) Attach(ctx context.Context) context.Context

Attach creates new instances of dataloader.Loader and attaches the instances on the request context. We do this because the dataloader has an in-memory cache that is scoped to the request.

type UserResult 

type UserResult struct {
	User  model.User
	Error error
}

UserResult is the (data, error) pair result of loading a specific key.

type UserResults 

type UserResults []UserResult

UserResults is a named type, so methods can be attached to []UserResult.

func LoadUsers 

func LoadUsers(ctx context.Context, ids []string) (UserResults, error)

func (UserResults) WithoutErrors 

func (results UserResults) WithoutErrors() []model.User

WithoutErrors filters any result pairs with non-nil errors.

Source Files

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