ktor-server-di/io.ktor.server.plugins.di/DependencyInitializer

DependencyInitializer

sealed interface DependencyInitializer(source)

Wraps the logic for creating a new instance of a dependency.

Concrete types of this sealed interface are used to include some metadata regarding how they were registered.

Report a problem

Inheritors

Types

Ambiguous

data class Ambiguous(val key: DependencyKey, val functions: Set<DependencyInitializer>) : DependencyInitializer

Represents a specific implementation of DependencyInitializer that throws an exception when there are multiple dependencies matching the given key, leading to an ambiguity.

Explicit

class Explicit(val key: DependencyKey, init: suspend DependencyResolver.() -> Any?) : DependencyInitializer

An explicit dependency creation function for directly registered types.

Implicit

class Implicit(val origin: DependencyInitializer.Explicit, val distance: Int) : DependencyInitializer

Represents an implicitly registered dependency creation function that delegates to its explicit parent.

Missing

class Missing(val key: DependencyKey, resolver: DependencyResolver) : DependencyInitializer

A placeholder that is used when a consumer is able to wait for a dependency provider to supply a true function.

Null

data class Null(val key: DependencyKey) : DependencyInitializer

Represents a no-op or absent dependency initializer.

Value

data class Value(val key: DependencyKey, val value: Any?) : DependencyInitializer

Represents a value-based dependency initializer, which resolves to a given value.

Properties

key

abstract val key: DependencyKey

originKey

open val originKey: DependencyKey

Functions

resolve

abstract fun resolve(resolver: DependencyResolver): Deferred<Any?>