如何从Google Cloud Function中的快照创建磁盘-Node.js

Question

I have been struggling to find a solution for this particular problem. I've gone through almost all the documentation of gcloud/compute node module which is used in google cloud functions .

Now my challenge is to create a new disk from an existing snapshot in google cloud function .

I have used below code to create a disk. As they haven't provided any example to create a disk from a snapshot . Following cloud function creates a new disk named disk1 which is entirely fresh and new disk. I don't want that. I want to create a disk from an existing snapshot which has some data and setup in it.

 exports.tempFunction = (req, res) => { // Example input: {"message": "Hello!"} const Compute = require(`@google-cloud/compute`); const compute = new Compute(); const zone = compute.zone('us-central1-a'); const disk = zone.disk('disk1'); const config = { // ... //os:'ubuntu' }; disk.create(config, function(err, disk, operation, apiResponse) { // `disk` is a Disk object. // `operation` is an Operation object that can be used to check the // status of the request. console.log(err); console.log(disk); console.log(operation); console.log(apiResponse); res.status(200).send("success"); }); }; 

Any help in this regard is highly appreciated.

PS I also tried using cloud APIs. But as I want only to use the cloud functions and I am unable to figure out that how do I get access token for gcloud to use inside cloud functions

Answer 1

The disk creation [1] can be customized by setting the disk resource fields [2] in the config object. In this case, set the sourceSnapshot field in the config to the existing snapshot partial or full URL. The code should look like this:

 exports.tempFunction = (req, res) => { // Example input: {"message": "Hello!"} const Compute = require(`@google-cloud/compute`); const compute = new Compute(); const zone = compute.zone('us-central1-a'); const disk = zone.disk('disk1'); const config = { sourceSnapshot: "projects/{YOUR-PROJECT}/global/snapshots/{YOUR_SNAPSHOT}" }; disk.create(config, function(err, disk, operation, apiResponse) { // `disk` is a Disk object. // `operation` is an Operation object that can be used to check the // status of the request. console.log(err); console.log(disk); console.log(operation); console.log(apiResponse); res.status(200).send("success"); }); };