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burnAMI.js
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burnAMI.js
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var AWS = require("aws-sdk");
AWS.config.update({region: 'ap-southeast-2'});
var Moment = require("moment");
var limit = 3;
var ec2 = new AWS.EC2();
var AMI_storage = [];
'use strict';
class AMI{
constructor () {}
listEC2 () {
return new Promise((resolve, reject) => {
let Instance_set = {};
let Instances = []; // Instance details
ec2.describeInstances({}, function(err, response) {
if (err) {
reject(err);
} else {
let current_time = new Moment().format(" YYYYMMDD");
let ec2_list = response.Reservations.map(instanceResponse =>{
instanceResponse.Instances[0].Tags.map(instanceTags => {
if(instanceTags.Key == 'Backup' && instanceTags.Value == 'True'){
Instance_set = {};
let Instance_name = instanceResponse.Instances[0].Tags.find( o => o.Key === 'Name');
Instance_set.id = instanceResponse.Instances[0].InstanceId;
Instance_set.name = Instance_name.Value;
Instance_set.name_date = Instance_name.Value.concat(current_time);
Instances.push(Instance_set);
}
});
resolve(Instances);
});
}
});
});
}
listAMIs() {
return new Promise((resolve, reject) => {
ec2.describeImages({Owners:['791606823516']}, function(err, data) {
if (err) {
reject(err);
} else {
resolve(data.Images);
}
});
});
}
countAMIs(data, Instances) {
let AMI_burn_set = [];
Instances.map(tagged_instance => {
let AMI_pair = {};
let i = 0;
AMI_pair.counter = 0;
data.map(ami =>{
if(ami.Name.includes(tagged_instance.name)){
AMI_pair.details=tagged_instance;
AMI_storage.push(ami);
AMI_pair.counter=++i;
AMI_burn_set.push(AMI_pair);
}else{
AMI_pair.details=tagged_instance;
AMI_burn_set.push(AMI_pair);
}
});
});
let uniqueArray = AMI_burn_set.filter(function(element, initial_position) {
return AMI_burn_set.indexOf(element) == initial_position;
});
return uniqueArray;
}
burn_or_not(instance) {
if(parseInt(instance.counter) <= limit)
{
return true;
}else{
return false;
}
}
registerAMI(instance) {
var params = {
InstanceId : instance.details.id,
Name : instance.details.name_date
};
ec2.createImage(params, function(err, data) {
if (err) {
console.log(err, err.stack);
} else{
console.log(data);
// return true;
}
});
}
deregisterAMI(expired_instance) {
let numberPattern = /\d+/g;
let leastDate = parseInt(AMI_storage[0].Name.replace(/\D/g, ''));
let leastInstance = {};
AMI_storage.map(private_AMI => {
if(private_AMI.Name.includes(expired_instance.details.name)){
if(leastDate > parseInt(private_AMI.Name.replace(/\D/g, ''))){
leastDate = parseInt(private_AMI.Name.replace(/\D/g, ''));
}
}
});
AMI_storage.map(private_AMI => {
if(private_AMI.Name.includes(expired_instance.details.name)
&& private_AMI.Name.includes(leastDate)){
console.log(private_AMI.Name);
var params = {
ImageId : private_AMI.ImageId
};
ec2.deregisterImage(params, function(err, data) {
if (err) console.log(err, err.stack); // an error occurred
else console.log(data); // successful response
});
}
});
}
}
export default AMI;