class AsyncExecutor {
constructor(limit) {
this.limit = limit;
this.runningCount = 0;
this.taskQueue = [];
}
executeAsyncTask(task) {
return new Promise((resolve, reject) => {
const execute = async () => {
try {
resolve(await task());
} catch (err) {
reject(err)
} finally {
this.runningCount--;
this.runNextTask();
}
}
if (this.runningCount < this.limit) {
this.runningCount++;
execute();
} else {
this.taskQueue.push(execute);
}
})
}
runNextTask() {
if (this.runningCount < this.limit && this.taskQueue.length) {
this.runningCount++;
const execute = this.taskQueue.shift();
execute();
}
}
async executeAsyncTasks(tasks) {
const result = [];
for (const task of tasks) {
result.push(this.executeAsyncTask(task));
}
return result
}
}
