Trioxis/aws-backup-manager

import moment from 'moment';

// Given a list of snapshots, returns a list of snapshots that have expired
// This can be determined using ExpiryDate tags
let findDeadSnapshots = (snapshotList) => {
    return snapshotList.filter((snap) => {
        if (moment().isAfter(snap.ExpiryDate)) {
            return true;
        } else {
            return false;
        }
    });
};

// Given a list of EBS volumes and list of snapshots, matches each snapshot to the
// EBS's Snapshots[BackupType] array. Returns an object containing the volume list
// and a list of orphaned snapshots
// The snapshot arrays are sorted by latest first
let matchSnapsToVolumes = (volumes, snapList) => {
    snapList = sortSnapsByMostRecent(snapList);
    let matchedVolumes = volumes.map((volume) => {
        volume.Snapshots = {};
        snapList = snapList.filter((snap) => {
            if (snap.FromVolumeName === volume.Name) {
                if (!volume.Snapshots[snap.BackupType]) volume.Snapshots[snap.BackupType] = [];
                volume.Snapshots[snap.BackupType].push(snap);
                return false;
            } else {
                return true;
            }
        });
        return volume;
    });
    let orphanedSnaps = snapList;
    return {matchedVolumes, orphanedSnaps};
};

// Sorts a list of snapshots by most recently created first
let sortSnapsByMostRecent = (snapList) => {
    // sort in to latest first
    return snapList.sort((a, b) => {
        if (a.StartTime.isAfter(b.StartTime)) {
            return -1;
        } else if (a.StartTime.isSame(b.StartTime)) {
            return 0;
        } else {
            return 1;
        }
    });
};

export {findDeadSnapshots, matchSnapsToVolumes, sortSnapsByMostRecent};