Class NetworkTablesTopic<T>

Type Parameters

T extends NetworkTablesTypes

Index

Constructors

Accessors

announced id lastChangedTime name publisher pubuid subscribers typeInfo

Methods

announce getValue publish republish resubscribeAll setProperties setValue subscribe unannounce unpublish unsubscribe unsubscribeAll updateValue

Constructors

constructor

new NetworkTablesTopic<T>(client, name, typeInfo, defaultValue?): NetworkTablesTopic<T>
Creates a new topic. This should only be done after the base NTCore client has been initialized.
Type Parameters
- T extends
      | string
      | number
      | boolean
      | string[]
      | ArrayBuffer
      | boolean[]
      | number[]
Parameters
- client: PubSubClient
  The client that owns the topic.
- name: string
  The name of the topic.
- typeInfo: NetworkTablesTypeInfo
  The type info for the topic.
- OptionaldefaultValue: T
  The default value for the topic.
Returns NetworkTablesTopic<T>
- Defined in packages/ntcore-ts-client/src/lib/pubsub/topic.ts:108

Accessors

announced

get announced(): boolean
Whether the topic has been announced.

Returns boolean
Whether the topic has been announced.
- Defined in packages/ntcore-ts-client/src/lib/pubsub/topic.ts:72

id

get id(): undefined | number
Gets the ID of the topic.

Returns undefined | number
The ID of the topic.
- Defined in packages/ntcore-ts-client/src/lib/pubsub/topic.ts:40

lastChangedTime

get lastChangedTime(): undefined | number
Gets the server time of the last value change.

Returns undefined | number
The server time of the last value change.
- Defined in packages/ntcore-ts-client/src/lib/pubsub/topic.ts:64

name

get name(): string
Gets the name of the topic.

Returns string
The name of the topic.
- Defined in packages/ntcore-ts-client/src/lib/pubsub/topic.ts:48

publisher

get publisher(): boolean
Gets whether the client is the publisher of the topic.

Returns boolean
Whether the client is the publisher of the topic.
- Defined in packages/ntcore-ts-client/src/lib/pubsub/topic.ts:80

pubuid

get pubuid(): undefined | number
Gets the UID of the publisher.

Returns undefined | number
The UID of the publisher, or undefined if the client is not the publisher.
- Defined in packages/ntcore-ts-client/src/lib/pubsub/topic.ts:88

subscribers

get subscribers(): Map<number, {
    callback: ((_: null | T) => void);
    immediateNotify: boolean;
    options: {
        all?: boolean;
        periodic?: number;
        prefix?: boolean;
        topicsonly?: boolean;
    };
}>
Gets the subscribers to the topic.

Returns Map<number, {
    callback: ((_: null | T) => void);
    immediateNotify: boolean;
    options: {
        all?: boolean;
        periodic?: number;
        prefix?: boolean;
        topicsonly?: boolean;
    };
}>
The subscribers to the topic.
- Defined in packages/ntcore-ts-client/src/lib/pubsub/topic.ts:96

typeInfo

get typeInfo(): NetworkTablesTypeInfo
Gets the type info for the topic.

Returns NetworkTablesTypeInfo
The type info for the topic.
- Defined in packages/ntcore-ts-client/src/lib/pubsub/topic.ts:56

Methods

announce

announce(id, pubuid?): void
Marks the topic as announced. This should only be called by the PubSubClient.
Parameters
- id: number
  The ID of the topic.
- Optionalpubuid: number
  The UID of the publisher.
Returns void
- Defined in packages/ntcore-ts-client/src/lib/pubsub/topic.ts:168

getValue

getValue(): null | T
Returns null | T
- Defined in packages/ntcore-ts-client/src/lib/pubsub/topic.ts:143

publish

publish(properties?, id?): Promise<void | {
    method: "announce";
    params: {
        id: number;
        name: string;
        properties: {
            cached?: boolean;
            persistent?: boolean;
            retained?: boolean;
        };
        pubuid?: number;
        type:
            | "string"
            | "boolean"
            | "float"
            | "double"
            | "int"
            | "json"
            | "raw"
            | "rpc"
            | "msgpack"
            | "protobuf"
            | "boolean[]"
            | "double[]"
            | "int[]"
            | "float[]"
            | "string[]";
    };
}>
Publishes the topic.
Parameters
- properties: {
      cached?: boolean;
      persistent?: boolean;
      retained?: boolean;
  } = {}
  The properties to publish the topic with.
  - Optionalcached?: boolean
  - Optionalpersistent?: boolean
  - Optionalretained?: boolean
- Optionalid: number
  The UID of the publisher.
Returns Promise<void | {
    method: "announce";
    params: {
        id: number;
        name: string;
        properties: {
            cached?: boolean;
            persistent?: boolean;
            retained?: boolean;
        };
        pubuid?: number;
        type:
            | "string"
            | "boolean"
            | "float"
            | "double"
            | "int"
            | "json"
            | "raw"
            | "rpc"
            | "msgpack"
            | "protobuf"
            | "boolean[]"
            | "double[]"
            | "int[]"
            | "float[]"
            | "string[]";
    };
}>
A promise that resolves when the topic is published.
- Defined in packages/ntcore-ts-client/src/lib/pubsub/topic.ts:263

republish

republish(client): Promise<void | {
    method: "announce";
    params: {
        id: number;
        name: string;
        properties: {
            cached?: boolean;
            persistent?: boolean;
            retained?: boolean;
        };
        pubuid?: number;
        type:
            | "string"
            | "boolean"
            | "float"
            | "double"
            | "int"
            | "json"
            | "raw"
            | "rpc"
            | "msgpack"
            | "protobuf"
            | "boolean[]"
            | "double[]"
            | "int[]"
            | "float[]"
            | "string[]";
    };
}>
Republishes the topic.
Parameters
- client: PubSubClient
  The client to republish with.
Returns Promise<void | {
    method: "announce";
    params: {
        id: number;
        name: string;
        properties: {
            cached?: boolean;
            persistent?: boolean;
            retained?: boolean;
        };
        pubuid?: number;
        type:
            | "string"
            | "boolean"
            | "float"
            | "double"
            | "int"
            | "json"
            | "raw"
            | "rpc"
            | "msgpack"
            | "protobuf"
            | "boolean[]"
            | "double[]"
            | "int[]"
            | "float[]"
            | "string[]";
    };
}>
A promise that resolves when the topic is republished.
- Defined in packages/ntcore-ts-client/src/lib/pubsub/topic.ts:298

resubscribeAll

resubscribeAll(client): void
Resubscribes all local subscribers.
Parameters
- client: PubSubClient
  The client to resubscribe with.
Returns void
- Defined in packages/ntcore-ts-client/src/lib/pubsub/topic.ts:239

setProperties

setProperties(persistent?, retained?): Promise<{
    method: "properties";
    params: {
        ack: boolean;
        name: string;
    };
}>
Sets the properties of the topic.
Parameters
- Optionalpersistent: boolean
  If true, the last set value will be periodically saved to persistent storage on the server and be restored during server startup. Topics with this property set to true will not be deleted by the server when the last publisher stops publishing.
- Optionalretained: boolean
  Topics with this property set to true will not be deleted by the server when the last publisher stops publishing.
Returns Promise<{
    method: "properties";
    params: {
        ack: boolean;
        name: string;
    };
}>
The server's response.
- Defined in packages/ntcore-ts-client/src/lib/pubsub/topic.ts:315

setValue

setValue(value): void
Sets the value of the topic. The client must be the publisher of the topic to set the value.
Parameters
- value: T
  The value to set.
Returns void
- Defined in packages/ntcore-ts-client/src/lib/pubsub/topic.ts:134

subscribe(callback, immediateNotify?, options?, id?, save?): number
Creates a new subscriber. This should only be called by the PubSubClient.
Parameters
- callback: ((_: null | T) => void)
  The callback to call when the topic value changes.
  - - (_): void
    - Parameters
      _: null | T
      Returns void
- immediateNotify: boolean = false
  Whether to immediately notify the subscriber of the current value.
- options: {
      all?: boolean;
      periodic?: number;
      prefix?: boolean;
      topicsonly?: boolean;
  } = {}
  The options for the subscriber.
  - Optionalall?: boolean
  - Optionalperiodic?: number
  - Optionalprefix?: boolean
  - Optionaltopicsonly?: boolean
- Optionalid: number
  The UID of the subscriber.
- save: boolean = true
  Whether to save the subscriber.
Returns number
The UID of the subscriber.
- Defined in packages/ntcore-ts-client/src/lib/pubsub/topic.ts:195

unannounce

unannounce(): void
Marks the topic as unannounced. This should only be called by the PubSubClient.

Returns void
- Defined in packages/ntcore-ts-client/src/lib/pubsub/topic.ts:177

unpublish

unpublish(): void
Unpublishes the topic.

Returns void
- Defined in packages/ntcore-ts-client/src/lib/pubsub/topic.ts:282

unsubscribe

unsubscribe(subuid, removeCallback?): void
Removes a subscriber
Parameters
- subuid: number
  The UID of the subscriber.
- removeCallback: boolean = true
  Whether to remove the callback. Leave this as true unless you know what you're doing.
Returns void
- Defined in packages/ntcore-ts-client/src/lib/pubsub/topic.ts:223

unsubscribeAll

unsubscribeAll(): void
Removes all local subscribers.

Returns void
- Defined in packages/ntcore-ts-client/src/lib/pubsub/topic.ts:231

updateValue

updateValue(value, lastChangedTime): void
Updates the value of the topic. This should only be called by the PubSubClient.
Parameters
- value: T
  The value to update.
- lastChangedTime: number
  The server time of the last value change.
Returns void
- Defined in packages/ntcore-ts-client/src/lib/pubsub/topic.ts:153

Class NetworkTablesTopic<T>

Type Parameters

Index

Constructors

Accessors

Methods

Constructors

constructor

Type Parameters

Parameters

Returns NetworkTablesTopic<T>

Accessors

announced

Returns boolean

id

Returns undefined | number

lastChangedTime

Returns undefined | number

name

Returns string

publisher

Returns boolean

pubuid

Returns undefined | number

subscribers

Returns Map<number, { callback: ((_: null | T) => void); immediateNotify: boolean; options: { all?: boolean; periodic?: number; prefix?: boolean; topicsonly?: boolean; }; }>

typeInfo

Returns NetworkTablesTypeInfo

Methods

announce

Parameters

Returns void

getValue

Returns null | T

publish

Parameters

Optionalcached?: boolean

Optionalpersistent?: boolean

Optionalretained?: boolean

republish

Parameters

resubscribeAll

Parameters

Returns void

setProperties

Parameters

Returns Promise<{ method: "properties"; params: { ack: boolean; name: string; }; }>

setValue

Parameters

Returns void

subscribe

Parameters

Parameters

Returns void

Optionalall?: boolean

Optionalperiodic?: number

Optionalprefix?: boolean

Optionaltopicsonly?: boolean

Returns number

unannounce

Returns void

unpublish

Returns void

unsubscribe

Parameters

Returns void

unsubscribeAll

Returns void

updateValue

Parameters

Returns void

Settings

On This Page

Returns Map<number, {
callback: ((_: null | T) => void);
immediateNotify: boolean;
options: {
all?: boolean;
periodic?: number;
prefix?: boolean;
topicsonly?: boolean;
};
}>

`Optional`cached?: boolean

`Optional`persistent?: boolean

`Optional`retained?: boolean

Returns Promise<{
method: "properties";
params: {
ack: boolean;
name: string;
};
}>

`Optional`all?: boolean

`Optional`periodic?: number

`Optional`prefix?: boolean

`Optional`topicsonly?: boolean