Torch Object Storage
Torch Object Storage
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01-SERVICE_ERROR
02-AUTH
03-ACCESS_CONTROL
04-QOS
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- Documentation
Torch Object StorageSDK ReferenceNode.jsBucket InterfaceManage Bucket ConfigurationManaging Event Notifications (Node.js SDK)
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Managing Event Notifications (Node.js SDK)
Copy pageDownload PDFManaging Event Notifications (Node.js SDK)
If you want to keep track of resource changes in TOS in real time, you can set up event notification rules through the Go SDK.
Precautions
- Only bucket Owners can create event notification services.
- Setting up event notifications relies on function services. You need to create and publish function services in Volcano Engine in advance.
Set up event notifications
The following code sets the event notification rule for the bucket.
// Import SDK, if the TOS Node.JS SDK version is less than 2.5.2, please change "TosClient" to "TOS" in the code below.
import { TosClient, TosClientError, TosServerError } from '@volcengine/tos-sdk';
// Create a client.
const client = new TosClient({
accessKeyId: process.env['TOS_ACCESS_KEY'],
accessKeySecret: process.env['TOS_SECRET_KEY'],
region: "Provide your region", // Fill in the region where the Bucket is located. For example, if it is in China North 2 (Beijing), fill in "Provide your region" as cn-beijing.
endpoint: "Provide your endpoint", // Enter the domain address.
});
function handleError(error) {
if (error instanceof TosClientError) {
console.log('Client Err Msg:', error.message);
console.log('Client Err Stack:', error.stack);
} else if (error instanceof TosServerError) {
console.log('Request ID:', error.requestId);
console.log('Response Status Code:', error.statusCode);
console.log('Response Header:', error.headers);
console.log('Response Err Code:', error.code);
console.log('Response Err Msg:', error.message);
} else {
console.log('unexpected exception, message: ', error);
}
}
const bucketName = 'node-sdk-test-bucket';
async function main() {
try {
const cloudFunctionConfiguration = {
// Event notification name
RuleId: 'TestNotification',
// Events to subscribe to
Events: ['tos:ObjectCreated:Put'],
// Set prefix and suffix information for matching objects
Filter: {
TOSKey: {
FilterRules: [
{
Name: 'prefix',
Value: 'test-',
},
{
Name: 'suffix',
Value: '-ci',
},
],
},
},
// The function service for setting up subscription events, this parameter is required.
CloudFunction: 'Provide the ID of your cloud function',
};
const { requestId: putNotificationRequestId } = await client.putBucketNotification({
bucket: bucketName,
cloudFunctionConfigurations: [cloudFunctionConfiguration],
});
console.log('putBucketNotification Request ID: ', putNotificationRequestId);
} catch (error) {
handleError(error);
}
}
main();
Get event notifications
The following code is used to obtain the event notification rule for the bucket.
// Import SDK, if the TOS Node.JS SDK version is less than 2.5.2, please change "TosClient" to "TOS" in the code below.
import { TosClient, TosClientError, TosServerError } from '@volcengine/tos-sdk';
// Create a client.
const client = new TosClient({
accessKeyId: process.env['TOS_ACCESS_KEY'],
accessKeySecret: process.env['TOS_SECRET_KEY'],
region: "Provide your region", // Fill in the region where the Bucket is located. For example, if it is in China North 2 (Beijing), fill in "Provide your region" as cn-beijing.
endpoint: "Provide your endpoint", // Enter the domain address.
});
function handleError(error) {
if (error instanceof TosClientError) {
console.log('Client Err Msg:', error.message);
console.log('Client Err Stack:', error.stack);
} else if (error instanceof TosServerError) {
console.log('Request ID:', error.requestId);
console.log('Response Status Code:', error.statusCode);
console.log('Response Header:', error.headers);
console.log('Response Err Code:', error.code);
console.log('Response Err Msg:', error.message);
} else {
console.log('unexpected exception, message: ', error);
}
}
const bucketName = 'node-sdk-test-bucket';
async function main() {
try {
const { data, requestId: getNotificationRequestId } = await client.getBucketNotification({
bucket: bucketName,
});
console.log('getBucketNotification Request ID: ', getNotificationRequestId);
console.log('CloudFunctionConfigurations Length: ', data.CloudFunctionConfigurations.length);
for (const conf of data.CloudFunctionConfigurations) {
// Event notification name
console.log('Cloud Function Configuration ID:', conf.RuleId);
// Subscribed events
console.log('Cloud Function Configuration Events: ', conf.Events);
// Set prefix and suffix information for matching objects
console.log('Cloud Function Configuration Filter: %o', conf.Filter);
// Set function service for subscribing to events
console.log('Cloud Function Configuration CloudFunction: ', conf.CloudFunction);
}
} catch (error) {
handleError(error);
}
}
main();
Last updated: 2025.09.22 18:35:45
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