lisk-framework
Version:
Lisk blockchain application platform
62 lines • 2.53 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.EventQueue = void 0;
const lisk_chain_1 = require("@liskhq/lisk-chain");
class EventQueue {
constructor(height, events, defaultTopics) {
this._height = height;
this._events = events !== null && events !== void 0 ? events : [];
this._defaultTopics = defaultTopics !== null && defaultTopics !== void 0 ? defaultTopics : [];
}
add(module, name, data, topics, noRevert) {
const allTopics = [...this._defaultTopics, ...(topics !== null && topics !== void 0 ? topics : [])];
if (data.length > lisk_chain_1.EVENT_MAX_EVENT_SIZE_BYTES) {
throw new Error(`Max size of event data is ${lisk_chain_1.EVENT_MAX_EVENT_SIZE_BYTES} but received ${data.length}`);
}
if (!allTopics.length) {
throw new Error('Topics must have at least one element.');
}
if (allTopics.length > lisk_chain_1.EVENT_MAX_TOPICS_PER_EVENT) {
throw new Error(`Max topics per event is ${lisk_chain_1.EVENT_MAX_TOPICS_PER_EVENT} but received ${allTopics.length}`);
}
this.unsafeAdd(module, name, data, topics, noRevert);
}
unsafeAdd(module, name, data, topics, noRevert) {
const allTopics = [...this._defaultTopics, ...(topics !== null && topics !== void 0 ? topics : [])];
this._events.push({
event: new lisk_chain_1.Event({
module,
name,
index: this._events.length,
data,
topics: allTopics,
height: this._height,
}),
noRevert: noRevert !== null && noRevert !== void 0 ? noRevert : false,
});
}
getChildQueue(topicID) {
return new EventQueue(this._height, this._events, [topicID]);
}
createSnapshot() {
return this._events.length;
}
restoreSnapshot(snapshotID) {
const newEvents = this._events.splice(snapshotID);
const nonRevertableEvents = newEvents
.filter(eventData => eventData.noRevert)
.map((eventData, i) => ({
event: new lisk_chain_1.Event({
...eventData.event.toObject(),
index: snapshotID + i,
}),
noRevert: false,
}));
this._events.push(...nonRevertableEvents);
}
getEvents() {
return this._events.map(e => e.event);
}
}
exports.EventQueue = EventQueue;
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