Shell expiry logic

Signed-off-by: Georg Pfuetzenreuter <mail@georg-pfuetzenreuter.net>

.gitignore

@@ -31,3 +31,6 @@ build/
 
 ### VS Code ###
 .vscode/
+
+### Vim ###
+.metals/

src/main/java/net/libertacasa/pubsh/web/SchedulerBean.java

@@ -1,6 +1,5 @@
 package net.libertacasa.pubsh.web;
 
-import java.time.Duration;
 import java.time.Instant;
 
 import org.springframework.boot.CommandLineRunner;
@@ -10,20 +9,32 @@ import org.springframework.context.annotation.Configuration;
 import com.github.kagkarlsson.scheduler.Scheduler;
 import com.github.kagkarlsson.scheduler.task.Task;
 import com.github.kagkarlsson.scheduler.task.helper.Tasks;
-import static com.github.kagkarlsson.scheduler.task.schedule.Schedules.fixedDelay;
+//import static com.github.kagkarlsson.scheduler.task.schedule.Schedules.fixedDelay;
 
 @Configuration
 public class SchedulerBean {
 
-    @Bean
-    Task<Void> recurringSampleTask(CounterService counter) {
-        return Tasks
-            .recurring("recurring-sample-task", fixedDelay(Duration.ofMinutes(1)))
-            .execute((instance, ctx) -> {
-                System.out.printf("Recurring testing task. Instance: %s, ctx: %s\n", instance, ctx);
-                CounterService.increase();
-            });
-    }
+//    @Bean
+//    Task<Void> recurringSampleTask(CounterService counter) {
+//        return Tasks
+//            .recurring("recurring-sample-task", fixedDelay(Duration.ofMinutes(1)))
+//            .execute((instance, ctx) -> {
+//                System.out.printf("Recurring testing task. Instance: %s, ctx: %s\n", instance, ctx);
+//                CounterService.increase();
+//            });
+//    }
+
+	@Bean
+	public static Task<Void> shellRemovalTask() {
+	  
+	  return Tasks.oneTime("shell-removal")
+	      .execute((instance, ctx) -> {
+	          System.out.printf("Running container removal task - Instance: %s, ctx: %s\n", instance, ctx);
+	          String username = instance.getId().split("&")[0];
+	          String containerid = instance.getId().split("&")[1];
+	          Docker.deleteShell(username, containerid);
+	      });
+	}
 
     @Bean
     Task<Void> sampleOneTimeTask() {
@@ -33,6 +44,7 @@ public class SchedulerBean {
             });
     }
     
+	// keeping this as a quick way to check if the scheduler booted up after an application restart
     @Bean
     CommandLineRunner executeOnStartup(Scheduler scheduler, Task<Void> sampleOneTimeTask) {
         System.out.println("Scheduling one-shot testing task to execute now.");

src/main/java/net/libertacasa/pubsh/web/WebApplication.java

@@ -1,6 +1,7 @@
 package net.libertacasa.pubsh.web;
 
 import java.security.Principal;
+import java.time.Instant;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Map;
@@ -13,6 +14,7 @@ import org.keycloak.adapters.KeycloakDeployment;
 import org.keycloak.adapters.RefreshableKeycloakSecurityContext;
 import org.keycloak.adapters.springsecurity.token.KeycloakAuthenticationToken;
 import org.keycloak.representations.IDToken;
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
 import org.springframework.http.MediaType;
@@ -28,10 +30,19 @@ import org.springframework.web.bind.annotation.RequestBody;
 import org.springframework.web.servlet.mvc.support.RedirectAttributes;
 import com.github.dockerjava.api.model.Container;
 import com.github.dockerjava.api.model.Image;
+import com.github.kagkarlsson.scheduler.Scheduler;
 
 @SpringBootApplication
 @Controller
 public class WebApplication {
+	
+	//private final CounterService counter;
+	private static Scheduler scheduler;
+	
+	@Autowired
+	public void Scheduler(Scheduler scheduler) {
+		WebApplication.scheduler = scheduler;
+	}
 
     static ArrayList<String> availableOs = new ArrayList<String>();
     
@@ -228,15 +239,18 @@ public class WebApplication {
 	     Map<String, Object> customClaims = token.getOtherClaims();
 	     username = String.valueOf(customClaims.get("username"));
 	     String os = (String) body.getFirst("osChoice");
+	     Integer expiry = (Integer) Integer.parseInt(body.getFirst("expiry"));
 	     
 	     System.out.printf("New shell with OS %s requested by %s (%s)\n", os, userid, username);
 	     
 	     Random rand = new Random();
 	     Integer randomInt = rand.nextInt(9999999-1111);
 	     Integer count = randomInt;
-	     
+	      
 	     try {
 	    	 String containerid = Docker.createShell(username, os, count);
+	    	 String instanceid = username + "&" + containerid;
+	    	 scheduler.schedule(SchedulerBean.shellRemovalTask().instance(instanceid), Instant.now().plusSeconds(expiry));
 	    	 String returnmessage =  "Success - spawned shell " + username + "_" + os + "_" + count + " - internal ID: " + containerid;
 	    	 redirectAttributes.addFlashAttribute("message", returnmessage);
 	     } catch (Exception exception) {
@@ -244,6 +258,7 @@ public class WebApplication {
 	    	 String returnmessage =  "Error - failed to build image :-(";
 	    	 redirectAttributes.addFlashAttribute("message", returnmessage);
 	    	 System.out.println(exception);
+	    	 //exception.printStackTrace();
 	     }
 	     
 	     return("redirect:/portal");

src/main/resources/templates/portal.html

@@ -18,6 +18,11 @@
 			        th:attr="value=${osoption}"
 			        th:text="${osoption}"></option>		
 			</select>
+			<select class="form-control" th:object="${expiry}" name="expiry">
+			<option value="">Select expiry ...</option>
+			<option th:value="5" th:attr="value=5" th:text="5"></option>
+			<option th:value="10" th:attr="value=10" th:text="10"></option>
+			</select>
 			<button class="btn btn-primary" th:id="request_submission" th:type="submit">Generate</button>
 			</form>		
 		<div th:if="${attribute01 != null}" th:text="${attribute01}"></div>