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Add option to Datafeed class to enable specific topics #26

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Add option to Datafeed class to enable specific topics #26

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13 changes: 8 additions & 5 deletions src/lib/datafeed.js
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Original file line number Diff line number Diff line change
Expand Up @@ -33,8 +33,10 @@ datafeed.subscribe(topic, (message) => {
* Datafeed connect/subscribe manager
*/
class Datafeed {
constructor(privateBullet = false) {
constructor(privateBullet = false, specific = false) {
/** public */
// use specific topics or just topicPrefix's
this.specific = !!specific;
// use private bullet link
this.privateBullet = !!privateBullet;
// real connected status
Expand All @@ -47,7 +49,7 @@ class Datafeed {
this.topicState = [];
// topic listener record
this.topicListener = {
// topicPrefix => [...hooks],
// topic(Prefix) => [...hooks],
};
// subscribed id, auto inc
this.incrementSubscribeId = 0;
Expand Down Expand Up @@ -218,7 +220,8 @@ class Datafeed {

const hookId = this.incrementSubscribeId;
const listener = { hook, id: hookId };
const prefix = getTopicPrefix(topic);
const prefix = this.specific?topic:getTopicPrefix(topic);

if (this.topicListener[prefix]) {
this.topicListener[prefix].push(listener);
} else {
Expand Down Expand Up @@ -247,7 +250,7 @@ class Datafeed {
* @param {boolean} _private is close topic that push private data
*/
unsubscribe(topic, hookId, _private = false) {
const prefix = getTopicPrefix(topic);
const prefix = this.specific?topic:getTopicPrefix(topic);
if (this.topicListener[prefix]) {
const deleted = this.topicListener[prefix].filter(item => item.id !== hookId);
if (deleted.length === 0) {
Expand All @@ -265,7 +268,7 @@ class Datafeed {
_distribute(message) {
const { topic } = message;
if (topic) {
const prefix = getTopicPrefix(topic);
const prefix = this.specific?topic:getTopicPrefix(topic);
const listeners = this.topicListener[prefix];
if (listeners) {
_.each(listeners, ({ hook }) => {
Expand Down