Object Storage Service:Manage symbolic links

Create a symbolic link

The following sample code provides an example on how to create a symbolic link:

const OSS = require('ali-oss')

const client = new OSS({
  // Specify the region in which the bucket is located. For example, if the bucket is located in the China (Hangzhou) region, set the region to oss-cn-hangzhou. 
  region: 'yourRegion',
  // Obtain access credentials from environment variables. Before you run the sample code, make sure that you have configured environment variables OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET. 
  accessKeyId: process.env.OSS_ACCESS_KEY_ID,
  accessKeySecret: process.env.OSS_ACCESS_KEY_SECRET,
  authorizationV4: true,
  // Specify the name of the bucket. 
  bucket: 'examplebucket',
});

const headers = {
   // Specify the storage class of the object. 
   'x-oss-storage-class':'Standard', 
   // Specify the access control list (ACL) of the object. 
   'x-oss-object-acl':'private',
   // Specify whether to overwrite the object that has the same name as the symbolic link. In this example, this parameter is set to true, which indicates that the object with the same name cannot be overwritten. 
   'x-oss-forbid-overwrite': 'true '
};

async function put () {
  try {
    // Specify symlinkobject.txt as the name of the symbolic link and exampleobject.txt as the name of the object to which you want the symbolic link to point.  
    const result = await client.putSymlink('symlinkobject.txt', 'exampleobject.txt'
    // ,{ headers }
    );
    console.log(result);
  } catch (e) {
    console.log(e);
  }
}

put();

Query the name of the object to which the symbolic link points

To query a symbolic link, you must have read permissions on the symbolic link. The following code provides an example on how to query the name of the object to which the symbolic link points:

const OSS = require('ali-oss')

const client = new OSS({
  // Specify the region in which the bucket is located. For example, if the bucket is located in the China (Hangzhou) region, set the region to oss-cn-hangzhou. 
  region: 'yourRegion',
  // Obtain access credentials from environment variables. Before you run the sample code, make sure that you have configured environment variables OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET. 
  accessKeyId: process.env.OSS_ACCESS_KEY_ID,
  accessKeySecret: process.env.OSS_ACCESS_KEY_SECRET,
  authorizationV4: true,
  // Specify the name of the bucket. 
  bucket: 'examplebucket',
});

// Specify the name of the symbolic link and query the name of the object to which the symbolic link points. 
client.getSymlink('symlinkobject.txt').then(r=>console.log(r))

References

• For more information about the API operation that you can call to create a symbolic link, see PutSymlink.

• For more information about the API operation that you can call to query a symbolic link, see GetSymlink.