public Stream UploadEBSReport(EBSReportInput input, ILambdaContext context)
{
this.context = context;
uploadContent(getImagesAsCsv(input, context), input.BucketName, input.Key);
return(new MemoryStream(Encoding.UTF8.GetBytes("OK")));
}
/// <summary>
/// Return csv file content for EBS snapshot
/// </summary>
/// <returns>The images as csv.</returns>
/// <param name="input">Input.</param>
/// <param name="context">Context.</param>
private String getImagesAsCsv(EBSReportInput input, ILambdaContext context)
{
String accountId = context.InvokedFunctionArn.Split(':')[4];
var ec2Client = new AmazonEC2Client();
var getSnapshotsRequest = new DescribeSnapshotsRequest();
getSnapshotsRequest.MaxResults = 1000;
//show only owned completed snapshots
getSnapshotsRequest.Filters.Add(new Amazon.EC2.Model.Filter("status", new List <string> {
"completed"
}));
getSnapshotsRequest.Filters.Add(new Amazon.EC2.Model.Filter("owner-id", new List <string> {
accountId
}));
List <Snapshot> snapshots = new List <Snapshot>();
do
{
var taskResponse = ec2Client.DescribeSnapshotsAsync(getSnapshotsRequest);
taskResponse.Wait();
snapshots.AddRange(taskResponse.Result.Snapshots);
context.Logger.LogLine($"Added {taskResponse.Result.Snapshots.Count} snapshots to results list");
getSnapshotsRequest.NextToken = taskResponse.Result.NextToken;
} while (getSnapshotsRequest.NextToken != null);
var awsCommon = new AWSCommon();
var allAMIs = awsCommon.GetAllOwnedPrivateAMIs(context);
var sb = new StringBuilder();
sb.Append("DateCreated,SnapID,Name,Description,AMIRelated,AMIExists,AMI-ID,Tags\n");
snapshots.Sort((s1, s2) => - 1 * s1.StartTime.CompareTo(s2.StartTime));
snapshots.ForEach(snapshot => {
var nameTag = snapshot.Tags.Find(t => t.Key.Equals("Name"));
var name = nameTag != null ? nameTag.Value : "";
var notNameTags = String.Join(" ", snapshot.Tags.FindAll(t => t.Key != "Name").Select(t => $"{t.Key}={t.Value}"));
bool isAmiRelated = false;
bool amiExists = false;
String amiId = "";
//check if ebs snapshots is related to an AMI
if (snapshot.Description != null)
{
var amiRegex = new Regex("Created by (.*) for ami-(.*) from (.*)").Match(snapshot.Description);
isAmiRelated = amiRegex.Success;
amiId = isAmiRelated ? "ami-" + amiRegex.Groups[2] : "";
amiExists = allAMIs.Find(i => i.ImageId.Equals(amiId)) != null;
}
//if only orphans to be reported, check if orphan (related to ami, ami does not exist)
if (!input.OnlyAMIOrphans)
{
sb.Append($"{snapshot.StartTime},{snapshot.SnapshotId},{name},{snapshot.Description},{isAmiRelated},{amiExists},{amiId},{notNameTags}\n");
}
else if (isAmiRelated && !amiExists)
{
sb.Append($"{snapshot.StartTime},{snapshot.SnapshotId},{name},{snapshot.Description},{isAmiRelated},{amiExists},{amiId},{notNameTags}\n");
}
else if (isAmiRelated && amiExists)
{
context.Logger.LogLine($"Skipping snap {snapshot.SnapshotId} as AMI {amiId} exists");
}
else if (!isAmiRelated)
{
context.Logger.LogLine($"Skipping snap {snapshot.SnapshotId} as non-ami related snapshot");
}
});
return(sb.ToString());
}