ktor-server-call-id/io.ktor.server.plugins.callid

Package-level declarations

Types

CallIdConfig

class CallIdConfig

A configuration for the CallId plugin.

CallIdProvider

typealias CallIdProvider = (call: ApplicationCall) -> String?

A function that retrieves or generates call id using provided call

CallIdVerifier

typealias CallIdVerifier = (String) -> Boolean

A function that verifies retrieved or generated call id. Should return true for a valid call id. Also it could throw a RejectedCallIdException to reject an ApplicationCall otherwise an illegal call id will be ignored or replaced with generated one.

RejectedCallIdException

class RejectedCallIdException(val illegalCallId: String) : IllegalArgumentException, CopyableThrowable<RejectedCallIdException>

An exception that could be thrown to reject a call due to illegal call id

Properties

CallId

val CallId: RouteScopedPlugin<CallIdConfig>

A plugin that allows you to trace client requests end-to-end by using unique request IDs or call IDs. Typically, working with a call ID in Ktor might look as follows:

callId

val ApplicationCall.callId: String?

Gets a call ID retrieved or generated by the CallId plugin. Returns null if there is no call ID is provided and no generators are configured.

Functions

callIdMdc

fun CallLoggingConfig.callIdMdc(name: String = "CallId")

Put call id into MDC (diagnostic context value) with name

generate

fun CallIdConfig.generate(length: Int = 64, dictionary: String = CALL_ID_DEFAULT_DICTIONARY)

Generates a fixed length call ID using the specified dictionary. Note that this function generates pseudo-random identifiers via regular java.util.Random and should not be considered as cryptographically secure. Also note that you need to use the same dictionary for CallIdVerifier, otherwise a generated call ID could be discarded or may lead to complete call rejection.