Let worker tokens expire only after a full (Gregorian) century

Description

Worker tokens need to remain active for a long time. Unfortunately, an expiry date is required. Setting the expiry date 100 years from the creation moment should cover most worker lifetimes.

Changes

• Worker tokens expire after 100 years.

Additions

N/A

Test and Review

To be filled in by the reviewers

• All of the methods are commented to expectation

• The methods are tested to satisfaction

• There are no unnecessary files present in the MR

• The continuous integration has no problems with the MR

• The MR is filled in as requested (including labels, milestones, and reviewers)

• The documentation is up-to-date

• All nullable parameters are marked as such

core/src/main/java/nl/tudelft/ewi/auta/core/controller/TokenController.java

@@ -12,9 +12,17 @@ import org.springframework.web.bind.annotation.RestController;
 import nl.tudelft.ewi.auta.core.response.Response;
 
 import java.sql.SQLException;
+import java.time.Instant;
+import java.time.temporal.ChronoUnit;
 
 @RestController
 public class TokenController {
+    /**
+     * The number of seconds in a century, approximately.
+     *
+     * This assumes that the length of a year is 365.2425 days.
+     */
+    private static final long CENTURY_IN_SECONDS = 3155695200L;
 
     /**
      * The authentication database connector.
@@ -54,7 +62,9 @@ public class TokenController {
         final var token = this.tokenGenerator.generate();
         final var workerName = this.settings.get("_worker account name", String.class);
         try (var conn = this.authConnector.connect()) {
-            conn.addToken(workerName, token);
+            conn.addToken(
+                    workerName, token, Instant.now().plus(CENTURY_IN_SECONDS, ChronoUnit.SECONDS)
+            );
         }
 
         final var res = new Response();