@tanstack/offline-transactions/dist/cjs/executor/KeyScheduler.cjs

Offline-first transaction capabilities for TanStack DB

"use strict";
Object.defineProperty(exports, Symbol.toStringTag, { value: "Module" });
const tracer = require("../telemetry/tracer.cjs");
class KeyScheduler {
  constructor() {
    this.pendingTransactions = [];
    this.isRunning = false;
  }
  schedule(transaction) {
    tracer.withSyncSpan(
      `scheduler.schedule`,
      {
        "transaction.id": transaction.id,
        queueLength: this.pendingTransactions.length
      },
      () => {
        this.pendingTransactions.push(transaction);
        this.pendingTransactions.sort(
          (a, b) => a.createdAt.getTime() - b.createdAt.getTime()
        );
      }
    );
  }
  getNext() {
    return tracer.withSyncSpan(
      `scheduler.getNext`,
      { pendingCount: this.pendingTransactions.length },
      (span) => {
        if (this.isRunning || this.pendingTransactions.length === 0) {
          span.setAttribute(`result`, `empty`);
          return void 0;
        }
        const firstTransaction = this.pendingTransactions[0];
        if (!this.isReadyToRun(firstTransaction)) {
          span.setAttribute(`result`, `waiting_for_first`);
          span.setAttribute(`transaction.id`, firstTransaction.id);
          return void 0;
        }
        span.setAttribute(`result`, `found`);
        span.setAttribute(`transaction.id`, firstTransaction.id);
        return firstTransaction;
      }
    );
  }
  isReadyToRun(transaction) {
    return Date.now() >= transaction.nextAttemptAt;
  }
  markStarted(_transaction) {
    this.isRunning = true;
  }
  markCompleted(transaction) {
    this.removeTransaction(transaction);
    this.isRunning = false;
  }
  markFailed(_transaction) {
    this.isRunning = false;
  }
  removeTransaction(transaction) {
    const index = this.pendingTransactions.findIndex(
      (tx) => tx.id === transaction.id
    );
    if (index >= 0) {
      this.pendingTransactions.splice(index, 1);
    }
  }
  updateTransaction(transaction) {
    const index = this.pendingTransactions.findIndex(
      (tx) => tx.id === transaction.id
    );
    if (index >= 0) {
      this.pendingTransactions[index] = transaction;
      this.pendingTransactions.sort(
        (a, b) => a.createdAt.getTime() - b.createdAt.getTime()
      );
    }
  }
  getPendingCount() {
    return this.pendingTransactions.length;
  }
  getRunningCount() {
    return this.isRunning ? 1 : 0;
  }
  clear() {
    this.pendingTransactions = [];
    this.isRunning = false;
  }
  getAllPendingTransactions() {
    return [...this.pendingTransactions];
  }
  updateTransactions(updatedTransactions) {
    for (const updatedTx of updatedTransactions) {
      const index = this.pendingTransactions.findIndex(
        (tx) => tx.id === updatedTx.id
      );
      if (index >= 0) {
        this.pendingTransactions[index] = updatedTx;
      }
    }
    this.pendingTransactions.sort(
      (a, b) => a.createdAt.getTime() - b.createdAt.getTime()
    );
  }
}
exports.KeyScheduler = KeyScheduler;
//# sourceMappingURL=KeyScheduler.cjs.map