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| package org.ycr.aws; | |
| import com.amazonaws.services.ec2.AmazonEC2; | |
| import com.amazonaws.services.ec2.AmazonEC2ClientBuilder; | |
| import com.amazonaws.services.ec2.model.DescribeInstancesRequest; | |
| import com.amazonaws.services.ec2.model.DescribeInstancesResult; | |
| import com.amazonaws.services.ec2.model.Instance; | |
| import com.amazonaws.services.ec2.model.Reservation; | |
| import com.amazonaws.services.ec2.model.Tag; | |
| import java.io.BufferedWriter; | |
| import java.io.File; | |
| import java.io.FileWriter; | |
| import java.io.IOException; | |
| import java.util.ArrayList; | |
| import java.util.Date; | |
| import java.util.List; | |
| import java.util.concurrent.TimeUnit; | |
| public class Main { | |
| public static void main(String[] args) { | |
| StringBuilder tempalte = new StringBuilder(); | |
| // Excludes any permanently running instances from the report | |
| List<String> excludeIdList = new ArrayList<>(); | |
| excludeIdList.add("i-0e637e411a26a3cd4"); | |
| excludeIdList.add("i-0f978eabef81c5b20"); | |
| tempalte.append("<!DOCTYPE html>\n" + | |
| "<html>\n" + | |
| "<head>\n" + | |
| "</head>\n" + | |
| "<body>\n" + | |
| "\n" + | |
| "<table id=\"customers\" border=\"1\" style=\"font-family: \"Trebuchet MS\", Arial, Helvetica, sans-serif; width: 100%;\">\n" + | |
| " <tr>\n" + | |
| " <th>Instance Name</th>\n" + | |
| " <th>Instance ID</th>\n" + | |
| " <th>State</th>\n" + | |
| " <th>Instance Type</th>\n" + | |
| " <th>Started Time Stamp</th>\n" + | |
| " <th>Associated Stack</th>\n" + | |
| " <th>Uptime(Hours)</th>\n" + | |
| " </tr>\n"); | |
| final AmazonEC2 ec2 = AmazonEC2ClientBuilder.defaultClient(); | |
| boolean done = false; | |
| boolean runningInstancesAvailable = false; | |
| DescribeInstancesRequest request = new DescribeInstancesRequest(); | |
| while (!done) { | |
| DescribeInstancesResult response = ec2.describeInstances(request); | |
| for (Reservation reservation : response.getReservations()) { | |
| boolean exclude = false; | |
| for (Instance instance : reservation.getInstances()) { | |
| for (String id : excludeIdList) { | |
| if (id.equals(instance.getInstanceId())) { | |
| exclude = true; | |
| break; | |
| } | |
| } | |
| if (!exclude) { | |
| // Here I'm excluding instances that are t2.micro since they are included in the free tier. | |
| if (instance.getState().getName().equals("running") && !instance.getInstanceType().equals | |
| ("t2.micro")) { | |
| runningInstancesAvailable = true; | |
| // Get the insatance name | |
| String instanceName = "Unknown"; | |
| String stackName = "No Stack!"; | |
| // Iterating over the tags to find information ike stack name and instance name | |
| if (instance.getTags() != null) { | |
| for (Tag tag : instance.getTags()) { | |
| if (tag.getKey().equals("Name")) { | |
| instanceName = tag.getValue(); | |
| System.out.println("Instance Name : " + instanceName); | |
| } | |
| if (tag.getKey().equals("aws:cloudformation:stack-name")){ | |
| stackName = tag.getValue(); | |
| } | |
| } | |
| } | |
| // Calculating the uptime | |
| long uptime = getDateDiff(instance.getLaunchTime(), new Date(), TimeUnit.HOURS); | |
| // If the uptime is more than 2 hours highlighting the text. | |
| if (uptime > 2) { | |
| tempalte.append(" <tr style=\"color: #f71313; font-weight:bold\">\n" + | |
| " <td>" + instanceName + "</td>\n" + | |
| " <td>" + instance.getInstanceId() + "</td>\n" + | |
| " <td>" + instance.getState().getName() + "</td>\n" + | |
| " <td>" + instance.getInstanceType() + "</td>\n" + | |
| " <td>" + instance.getLaunchTime().toString() + "</td>\n" + | |
| " <td>" + stackName + "</td>\n" + | |
| " <td style=\"text-align:center\">" + uptime + "</td>\n" + | |
| " </tr>\n"); | |
| } else { | |
| tempalte.append(" <tr>\n" + | |
| " <td>" + instanceName + "</td>\n" + | |
| " <td>" + instance.getInstanceId() + "</td>\n" + | |
| " <td>" + instance.getState().getName() + "</td>\n" + | |
| " <td>" + instance.getInstanceType() + "</td>\n" + | |
| " <td>" + instance.getLaunchTime().toString() + "</td>\n" + | |
| " <td>" + stackName + "</td>\n" + | |
| " <td style=\"text-align:center\">" + uptime + "</td>\n" + | |
| " </tr>\n"); | |
| } | |
| System.out.printf( | |
| "Found instance with id %s, " + | |
| "AMI %s, " + | |
| "type %s, " + | |
| "state %s " + | |
| "and monitoring state %s", | |
| instance.getInstanceId(), | |
| instance.getImageId(), | |
| instance.getInstanceType(), | |
| instance.getState().getName(), | |
| instance.getMonitoring().getState()); | |
| } | |
| instance.getKeyName(); | |
| } | |
| } | |
| } | |
| request.setNextToken(response.getNextToken()); | |
| if (response.getNextToken() == null) { | |
| done = true; | |
| } | |
| } | |
| tempalte.append("</table>\n" + | |
| "</body>\n" + | |
| "</html>"); | |
| System.out.println(tempalte); | |
| if (runningInstancesAvailable){ | |
| File file = new File("./mail.html"); | |
| try (BufferedWriter writer = new BufferedWriter(new FileWriter(file))) { | |
| writer.write(tempalte.toString()); | |
| writer.flush(); | |
| } catch (IOException e) { | |
| e.printStackTrace(); | |
| } | |
| } | |
| } | |
| /** | |
| * Get a diff between two dates | |
| * @param date1 the oldest date | |
| * @param date2 the newest date | |
| * @param timeUnit the unit in which you want the diff | |
| * @return the diff value, in the provided unit | |
| */ | |
| public static long getDateDiff(Date date1, Date date2, TimeUnit timeUnit) { | |
| long diffInMillies = date2.getTime() - date1.getTime(); | |
| return timeUnit.convert(diffInMillies,TimeUnit.MILLISECONDS); | |
| } | |
| } |
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