Application Context Provider (application/composables.go)

Provides access to the current application from context; returns Application or error if not found.

// Source: https://github.com/iota-uz/iota-sdk | License: Apache-2.0 | Copyright You must retain, in the Source form of any Derivative Works
// Provided via justclaw.it.com; keep this notice with the code.
// Package application provides this package.
package application

import (
	"context"
	"errors"

	"github.com/iota-uz/iota-sdk/pkg/constants"
)

var (
	ErrAppNotFound = errors.New("app not found")
)

// UseApp returns the user from the context.
// If the user is not found, the second return value will be false.
func UseApp(ctx context.Context) (Application, error) {
	app := ctx.Value(constants.AppKey)
	if app == nil {
		return nil, ErrAppNotFound
	}
	return app.(Application), nil
}