VM firewall rules update - node.js

Question

Is there an API to update the firewall rules using NodeJS, an example would be really appreciated.
Requirement: I have a list of CDN trusted IPs around 1700, to be allowed to access specific VM in GCP on port 80.
As I understand, we can have a maximum of 256 source ips per firewall rule. I can create and update 8 of them, and tag with the same name,
Question: can we do it using NodeJS API?
This API doesn't return firewall rules.
Equivalent of cli commands is as below
gcloud compute firewall-rules describe alltraffic
gcloud compute firewall-rules update alltraffic --source-ranges="14.201.176.140/32","14.201.176.144/32"
gcloud compute firewall-rules create ramtest1 --allow="tcp:80" --description="ramtest1" --source-ranges="205.251.192.0/19","52.95.174.0/24" --target-tags="tcp-111"
https://cloud.google.com/sdk/gcloud/reference/compute/firewall-rules/
don't see the update command in the nodejs api
https://cloud.google.com/nodejs/docs/reference/compute/0.10.x/Firewall#create
https://cloud.google.com/nodejs/docs/reference/compute/0.10.x/Compute#createFirewall
exports.run_process = async (req, res) => {
const Compute = require('#google-cloud/compute');
const compute = new Compute();
const network = compute.network('default');
const firewalls = (await network.getFirewalls())[0];
for(const firewall of firewalls) {
// console.log('firewall == '+JSON.stringify(firewall));
console.log('firewall = '+firewall.metadata.name);
if(firewall.metadata.name === 'alltraffic') {
console.log(' xxxxxxxxxxxxxxxxxxxx changing all traffic xxxxxxxxxxxxxx ');
}
}
return res.status(200).send('ok');
};
This code above lists the firewall rule, NFI why its called as firewall, when in the console its called as firewall rules, it's so confusing

Answer 1

You should use the setMetadata function to update a firewall rule. For example, take this nodejs snippet which reads and updates the description of a firewall rule:
async function doit() {
const Compute = require('#google-cloud/compute');
const compute = new Compute();
const f = compute.firewall('default-allow-10000');
f.get().then(data => {
const firewall = data[0];
console.log('initial description: ' + firewall.metadata.description);
const metadata = {
description: 'new description for this rule'
};
return firewall.setMetadata(metadata);
}).then(data => {
const firewall = data[0];
console.log('description set');
return compute.firewall('default-allow-10000').get();
}).then(data => {
const firewall = data[0];
console.log('current description: ' + firewall.metadata.description);
});
}
doit();
In my example, this gives the output of:
initial description: old description
description set
current description: new description for this rule
To see what exists on the metadata object, you should look at the definition of the Firewall resource in the REST API.