@azure/event-hubs/dist/commonjs/partitionProcessor.js

Azure Event Hubs SDK for JS.

var __defProp = Object.defineProperty;
var __getOwnPropDesc = Object.getOwnPropertyDescriptor;
var __getOwnPropNames = Object.getOwnPropertyNames;
var __hasOwnProp = Object.prototype.hasOwnProperty;
var __export = (target, all) => {
  for (var name in all)
    __defProp(target, name, { get: all[name], enumerable: true });
};
var __copyProps = (to, from, except, desc) => {
  if (from && typeof from === "object" || typeof from === "function") {
    for (let key of __getOwnPropNames(from))
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        __defProp(to, key, { get: () => from[key], enumerable: !(desc = __getOwnPropDesc(from, key)) || desc.enumerable });
  }
  return to;
};
var __toCommonJS = (mod) => __copyProps(__defProp({}, "__esModule", { value: true }), mod);
var partitionProcessor_exports = {};
__export(partitionProcessor_exports, {
  PartitionProcessor: () => PartitionProcessor
});
module.exports = __toCommonJS(partitionProcessor_exports);
var import_logger = require("./logger.js");
class PartitionProcessor {
  constructor(_eventHandlers, _checkpointStore, _context) {
    this._eventHandlers = _eventHandlers;
    this._checkpointStore = _checkpointStore;
    this._context = _context;
  }
  _eventHandlers;
  _checkpointStore;
  _context;
  _lastEnqueuedEventProperties;
  /**
   * Information on the last enqueued event in the partition that is being processed.
   * This property is updated by the `EventProcessor` if the `trackLastEnqueuedEventProperties` option is set to true
   * when creating an instance of EventProcessor
   * @readonly
   */
  get lastEnqueuedEventProperties() {
    return this._lastEnqueuedEventProperties;
  }
  /**
   * Information on the last enqueued event in the partition that is being processed.
   * This property is updated by the `EventProcessor` if the `trackLastEnqueuedEventProperties` option is set to true
   * when creating an instance of EventProcessor
   */
  set lastEnqueuedEventProperties(properties) {
    this._lastEnqueuedEventProperties = properties;
  }
  /**
   * The fully qualified namespace from where the current partition is being processed. It is set by the `EventProcessor`
   * @readonly
   */
  get fullyQualifiedNamespace() {
    return this._context.fullyQualifiedNamespace;
  }
  /**
   * The name of the consumer group from where the current partition is being processed. It is set by the `EventProcessor`
   * @readonly
   */
  get consumerGroup() {
    return this._context.consumerGroup;
  }
  /**
   * The name of the event hub to which the current partition belongs. It is set by the `EventProcessor`
   * @readonly
   */
  get eventHubName() {
    return this._context.eventHubName;
  }
  /**
   * The identifier of the Event Hub partition that is being processed. It is set by the `EventProcessor`
   * @readonly
   */
  get partitionId() {
    return this._context.partitionId;
  }
  /**
   * The unique identifier of the `EventProcessor` that has spawned the current instance of `PartitionProcessor`. This is set by the `EventProcessor`
   */
  get eventProcessorId() {
    return this._context.eventProcessorId;
  }
  /**
   * This method is called when the `EventProcessor` takes ownership of a new partition and before any
   * events are received.
   */
  async initialize() {
    return this._eventHandlers.processInitialize?.(this);
  }
  /**
   * This method is called before the partition processor is closed by the EventProcessor.
   *
   * @param reason - The reason for closing this partition processor.
   */
  async close(reason) {
    if (this._eventHandlers.processClose) {
      await this._eventHandlers.processClose(reason, this);
    }
  }
  /**
   * This method is called when new events are received.
   *
   * This is also a good place to update checkpoints as appropriate.
   *
   * @param event - The received events to be processed.
   */
  async processEvents(events) {
    await this._eventHandlers.processEvents(events, this);
  }
  /**
   * This method is called when an error occurs while receiving events from Event Hubs.
   *
   * @param error - The error to be processed.
   */
  async processError(error) {
    if (this._eventHandlers.processError) {
      try {
        await this._eventHandlers.processError(error, this);
      } catch (err) {
        import_logger.logger.verbose(`Error thrown from user's processError handler : ${err}`);
      }
    }
  }
  /**
   * Updates the checkpoint using the event data.
   *
   * A checkpoint is meant to represent the last successfully processed event by the user from a particular
   * partition of a consumer group in an Event Hub instance.
   *
   * @param eventData - The event that you want to update the checkpoint with.
   */
  async updateCheckpoint(eventData) {
    const checkpoint = {
      fullyQualifiedNamespace: this._context.fullyQualifiedNamespace,
      eventHubName: this._context.eventHubName,
      consumerGroup: this._context.consumerGroup,
      partitionId: this._context.partitionId,
      sequenceNumber: eventData.sequenceNumber,
      offset: eventData.offset
    };
    await this._checkpointStore.updateCheckpoint(checkpoint);
  }
}
// Annotate the CommonJS export names for ESM import in node:
0 && (module.exports = {
  PartitionProcessor
});
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