{* ../../docs_src/background_tasks/tutorial001_py310.py hl[14] *}

`.add_task()` 的引數包括：

* 要在背景執行的任務函式（`write_notification`）。
* 依序傳給任務函式的位置引數（`email`）。
* 要傳給任務函式的關鍵字引數（`message="some notification"`）。

## 相依性注入 { #dependency-injection }

在相依性注入系統中也可使用 `BackgroundTasks`。你可以在多個層級宣告 `BackgroundTasks` 型別的參數：路徑操作函式、相依項（dependable）、次級相依項等。

**FastAPI** 會在各種情況下正確處理並重用同一個物件，將所有背景任務合併，並在之後於背景執行：

        // Verify flags (RECURSIVE_TREE + NOTIFICATIONS)
        int expectedFlags = DirectoryLeaseContext.DIRECTORY_LEASE_FLAG_RECURSIVE | DirectoryLeaseContext.DIRECTORY_LEASE_FLAG_NOTIFICATIONS;
        assertEquals(expectedFlags, SMBUtil.readInt4(buffer, 68));

        // Verify notification filter
        assertEquals(0x1F, SMBUtil.readInt4(buffer, 72));
    }

    @Test

        // Should not throw exception when notification is disabled
        try {
            crawler.sendMail(infoMap);
        } catch (Exception e) {
            fail("Should not throw exception: " + e.getMessage());
        }
    }

    @Test
    public void test_sendMail_withNotificationEnabled() {
        // Override fessConfig to enable notification

                List<WitnessAsyncNotifyMessage.WitnessNotificationResponse> notifications = message.getNotifications();
                if (!notifications.isEmpty()) {
                    log.debug("Received {} notifications", notifications.size());
                    return notifications.get(0); // Return first notification
                }
            } else {

			Description:     "publish bucket notifications to webhook endpoints",
			MultipleTargets: true,
		},
		config.HelpKV{
			Key:             config.NotifyAMQPSubSys,
			Description:     "publish bucket notifications to AMQP endpoints",
			MultipleTargets: true,
		},
		config.HelpKV{
			Key:             config.NotifyKafkaSubSys,
			Description:     "publish bucket notifications to Kafka endpoints",
			MultipleTargets: true,

    AtomicInteger totalSum = new AtomicInteger();

    RemovalListener<Integer, AtomicInteger> removalListener =
        notification -> {
          if (notification.wasEvicted()) {
            evictionCount.incrementAndGet();
            totalSum.addAndGet(notification.getValue().get());
          }
        };

    CacheLoader<Integer, AtomicInteger> loader =

{* ../../docs_src/background_tasks/tutorial001_py310.py hl[14] *}

`.add_task()` は以下の引数を受け取ります:

* バックグラウンドで実行されるタスク関数 (`write_notification`)。
* タスク関数に順番に渡す必要のある引数の列 (`email`)。
* タスク関数に渡す必要のあるキーワード引数 (`message="some notification"`)。

## 依存性注入 { #dependency-injection }

`BackgroundTasks` の使用は依存性注入システムでも機能し、様々な階層 (*path operation function*、依存性 (dependable)、サブ依存性など) で `BackgroundTasks` 型のパラメーターを宣言できます。

        assertFalse(entry1.hasChild("subfolder"));
        assertTrue(entry2.hasChild("subfolder"));
        assertFalse(entry2.hasChild("document.txt"));

        // Test individual change notification
        directoryLeaseManager.handleDirectoryChange(dir1, "document.txt", DirectoryChangeNotifier.DirectoryChangeType.FILE_REMOVED);

        // Only first directory should be affected

                    f"This PR #{pr.number} was already notified in comment: {already_notified_comment.url}"
                )
            else:
                logging.info(
                    f"Writing notification comment about PR #{pr.number} in Discussion: #{discussion.number}"
                )
                comment = create_comment(
                    settings=settings,
                    discussion_id=discussion.id,

package event

import (
	"encoding/json"
	"encoding/xml"
)

// Name - event type enum.
// Refer http://docs.aws.amazon.com/AmazonS3/latest/dev/NotificationHowTo.html#notification-how-to-event-types-and-destinations
// for most basic values we have since extend this and its not really much applicable other than a reference point.
// "s3:Replication:OperationCompletedReplication" is a MinIO extension.