diff --git a/jvm/src/main/resources/eff_short_wordlist_1.txt b/jvm/src/main/resources/eff_short_wordlist_1.txt
new file mode 100644
index 0000000000000000000000000000000000000000..fb0a9e35e14f83826389eab96187e11d425ebf39
--- /dev/null
+++ b/jvm/src/main/resources/eff_short_wordlist_1.txt
@@ -0,0 +1,1296 @@
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+6634 wreck
+6635 wrist
+6636 xerox
+6641 yahoo
+6642 yam
+6643 yard
+6644 year
+6645 yeast
+6646 yelp
+6651 yield
+6652 yo-yo
+6653 yodel
+6654 yoga
+6655 yoyo
+6656 yummy
+6661 zebra
+6662 zero
+6663 zesty
+6664 zippy
+6665 zone
+6666 zoom
diff --git a/jvm/src/main/scala/cs214/webapp/server/web/WebServer.scala b/jvm/src/main/scala/cs214/webapp/server/web/WebServer.scala
index 79c41625a8a5f8622751f1455767c4fcb3317f0a..9fc9753ae371334cdcc2c19efcaeb3074b40e307 100644
--- a/jvm/src/main/scala/cs214/webapp/server/web/WebServer.scala
+++ b/jvm/src/main/scala/cs214/webapp/server/web/WebServer.scala
@@ -9,6 +9,9 @@ import scala.util.{Failure, Success, Try}
/** Contains the web server state and functionalities */
object WebServer:
+ private val instanceIdsFileName = "eff_short_wordlist_1.txt" // Where to find the list of possible instance ids
+ private val instanceIdsCount = 4 // How many words do we concatenate for the instance id
+
private[web] val debug = false
private[web] case class RunningClock(
@@ -48,7 +51,23 @@ object WebServer:
private[web] def createInstance(appId: AppId, clients: Seq[UserId]): InstanceId =
// Populate `apps`
- val instanceId = java.util.UUID.randomUUID.toString
+ def loadWordlist(fname: String): Seq[String] =
+ import scala.io.{Source, Codec}
+ val wordstream =
+ Option(this.getClass.getResourceAsStream(f"/$fname"))
+ .getOrElse(sys.error(f"File not found: $fname"))
+ try
+ Source.fromInputStream(wordstream)(Codec.UTF8)
+ .getLines().map(_.split("\t").last).to(Vector)
+ finally wordstream.close()
+
+ def randomInstanceId: String =
+ import scala.util.Random
+ val words = loadWordlist(instanceIdsFileName)
+ List.fill(instanceIdsCount)(words(Random.nextInt(words.size))).mkString("-")
+
+ val instanceId = randomInstanceId
+
apps(instanceId) = RunningServerAppInstance(appDirectory(appId).init(clients), 0)
apps(instanceId).instance match