commonMain.com.pubnub.api.v2.entities.ChannelMetadata.kt Maven / Gradle / Ivy

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package com.pubnub.api.v2.entities

import com.pubnub.api.v2.subscriptions.Subscription
import com.pubnub.api.v2.subscriptions.SubscriptionOptions

/**
 * A representation of a PubNub entity for tracking channel metadata changes.
 *
 * You can get a [Subscription] to listen for metadata events through [Subscribable.subscription].
 *
 * Use the [com.pubnub.api.PubNub.channelMetadata] factory method to create instances of this interface.
 */
interface ChannelMetadata : Subscribable {
    /**
     * The id for this channel metadata object.
     *
     * See more in the [documentation](https://www.pubnub.com/docs/general/metadata/channel-metadata)
     */
    val id: String

    /**
     * Returns a [Subscription] that can be used to subscribe to this channel metadata.
     *
     * [com.pubnub.api.v2.subscriptions.SubscriptionOptions.filter] can be used to filter events delivered to the subscription.
     *
     * @param options optional [SubscriptionOptions].
     * @return an inactive [Subscription] to this channel metadata. You must call [Subscription.subscribe] to start receiving events.
     */
    override fun subscription(options: SubscriptionOptions): Subscription
}