ci: bump version with Build-128

fix: wrap server list response in ExternalTournamentServerList
Frontend expects `{ servers: [...] }` but endpoint returned a plain array. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
2026-06-21 09:39:54 +00:00 · 2026-06-21 11:15:39 +02:00 · 2026-06-21 10:54:35 +02:00 · 2026-06-19 10:28:49 +00:00 · 2026-06-17 10:42:52 +02:00 · 2026-06-17 10:42:42 +02:00
25 changed files with 490 additions and 128 deletions
@@ -10,3 +10,16 @@
 ### Bug Fixes

 * **analytics:** upgrade Spark to 4.0.3 — 3.5.x has no official Docker image ([46af115](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/46af1154de34a8596cb6cb28c6fad7aba90f597c))
+##  (2026-06-19)
+
+### Features
+
+* **analytics:** add Dockerfile, CI workflow, and stable jar name for K8s deployment ([95215b6](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/95215b6a420fd526df1aa395f9b087556c8ad03b))
+* **analytics:** add PostgreSQL JDBC write-back to all four batch jobs ([0e0ea4c](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/0e0ea4c9893c6efed52e633e55d05ab3ed004502))
+* **analytics:** add Spark batch analytics module ([259b3bb](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/259b3bbb24c0f23326269b93f4b3c84012f727cd))
+* **analytics:** add Structured Streaming, MLlib clustering, GraphX jobs ([e1d80b9](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/e1d80b9331666feea191b1fd08aa762f3581c918))
+* **official-bots:** park expert bot on tournament server at startup ([#76](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/76)) ([751a58b](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/751a58b6061f7434115e229a7661894c76768bc2))
+
+### Bug Fixes
+
+* **analytics:** upgrade Spark to 4.0.3 — 3.5.x has no official Docker image ([46af115](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/46af1154de34a8596cb6cb28c6fad7aba90f597c))
@@ -22,6 +22,9 @@
 //   NOWCHESS_JDBC_URL  (default: jdbc:postgresql://localhost:5432/nowchess)
 //   NOWCHESS_DB_USER   (default: nowchess)
 //   NOWCHESS_DB_PASS   (default: nowchess)
+//   NOWCHESS_PGN_PATH  (optional) — file or http(s) URL of a Lichess PGN dump (.pgn or .pgn.zst).
+//                      When set, all batch jobs read games from the dump instead of PostgreSQL and
+//                      skip JDBC write-back (Parquet/CSV output only). Demo data source.

 plugins {
    id("scala")
@@ -71,6 +74,10 @@ dependencies {

    // PostgreSQL JDBC driver bundled so it is available on executor classpath.
    implementation("org.postgresql:postgresql:42.7.4")
+
+    // zstd-jni: decompress Lichess .pgn.zst dumps in-process. Provided at runtime by Spark
+    // (it uses zstd-jni internally for shuffle/event-log compression), so compile-only here.
+    compileOnly("com.github.luben:zstd-jni:1.5.6-9")
 }

 application {
@@ -0,0 +1,119 @@
+package de.nowchess.analytics
+
+import org.apache.spark.SparkFiles
+import org.apache.spark.sql.DataFrame
+import org.apache.spark.sql.SparkSession
+import org.apache.spark.sql.functions as F
+
+/** Normalised game-record source for the batch jobs.
+  *
+  * Every batch job consumes the same five-column shape:
+  *   - white_id, black_id : player identifiers
+  *   - result             : one of "white", "black", "draw"
+  *   - move_count         : number of plies
+  *   - pgn                : full PGN ("[Event …]…\n\n1. e4 …"), header and movetext separated by a blank line
+  *
+  * Two backends, selected by the `NOWCHESS_PGN_PATH` environment variable:
+  *   - unset → PostgreSQL `game_records` table (production)
+  *   - set   → a Lichess PGN dump file/URL (demo). Point it at a `lichess_db_standard_rated_*.pgn[.zst]`
+  *             to drive every batch job from real Lichess games.
+  *
+  * Lichess parsing uses only Spark SQL string functions — no UDFs — so Catalyst can push predicates,
+  * matching the no-UDF approach already used in OpeningBookJob.
+  */
+object GameSource:
+
+  private val PgnPathEnv = "NOWCHESS_PGN_PATH"
+
+  /** True when a Lichess PGN dump is configured; jobs use this to skip JDBC write-back. */
+  def isPgnMode: Boolean = sys.env.contains(PgnPathEnv)
+
+  def load(spark: SparkSession, jdbcUrl: String, dbUser: String, dbPass: String): DataFrame =
+    sys.env.get(PgnPathEnv) match
+      case Some(path) => fromLichessPgn(spark, path)
+      case None       => fromJdbc(spark, jdbcUrl, dbUser, dbPass)
+
+  def fromJdbc(spark: SparkSession, jdbcUrl: String, dbUser: String, dbPass: String): DataFrame =
+    spark.read
+      .format("jdbc")
+      .option("url", jdbcUrl)
+      .option("dbtable", "game_records")
+      .option("user", dbUser)
+      .option("password", dbPass)
+      .option("driver", "org.postgresql.Driver")
+      .option("fetchsize", "10000")
+      .load()
+      .select("white_id", "black_id", "result", "move_count", "pgn")
+
+  /** Parses a Lichess PGN dump into the normalised game shape.
+    *
+    * `path` may be:
+    *   - an http(s)/ftp URL — fetched once via SparkContext.addFile and distributed to executors, then read
+    *     from the local replica (no S3/PVC needed; handy for a staging demo)
+    *   - any Hadoop-readable path (file://, hdfs://, s3a://, …)
+    *
+    * `.zst` dumps (Lichess' native format) are decompressed in-process via zstd-jni; `.gz`/`.bz2` are
+    * handled by Spark's text reader codecs.
+    *
+    * Records are split on the "[Event " tag that opens every game, so each row holds one complete game
+    * (the empty fragment before the first game is filtered out). Header tags are read with regexp_extract;
+    * the movetext (after the blank line) is cleaned of clock/eval comments and move numbers to count plies.
+    */
+  def fromLichessPgn(spark: SparkSession, path: String): DataFrame =
+    val resolved = resolvePath(spark, path)
+    val record   = F.col("value")
+
+    val resultTag = F.regexp_extract(record, "Result \"([^\"]*)\"", 1)
+    val result = F
+      .when(resultTag === "1-0", "white")
+      .when(resultTag === "0-1", "black")
+      .when(resultTag === "1/2-1/2", "draw")
+      .otherwise(F.lit(null).cast("string"))
+
+    val moveText  = F.coalesce(F.split(record, "\n\n").getItem(1), F.lit(""))
+    val noComment = F.regexp_replace(moveText, "\\{[^}]*\\}", "")
+    val noResult  = F.regexp_replace(noComment, "(1-0|0-1|1/2-1/2|\\*)", "")
+    val noNumbers = F.regexp_replace(noResult, "\\d+\\.+", " ")
+    val plies     = F.size(F.filter(F.split(F.trim(noNumbers), "\\s+"), tok => F.length(tok) > 0))
+
+    spark.read
+      .option("lineSep", "[Event ")
+      .text(resolved)
+      .filter(F.length(F.trim(record)) > 0)
+      .select(
+        F.regexp_extract(record, "White \"([^\"]*)\"", 1).as("white_id"),
+        F.regexp_extract(record, "Black \"([^\"]*)\"", 1).as("black_id"),
+        result.as("result"),
+        plies.as("move_count"),
+        F.concat(F.lit("[Event "), record).as("pgn"),
+      )
+      .filter((F.col("white_id") =!= "").and(F.col("black_id") =!= ""))
+
+  /** Turns an http(s)/ftp URL into a cluster-local path by fetching it once with SparkContext.addFile,
+    * which distributes the file to every executor. `.zst` is decompressed in-process and the plain `.pgn`
+    * is redistributed. Non-URL paths are returned unchanged.
+    */
+  private def resolvePath(spark: SparkSession, path: String): String =
+    if !path.matches("^(https?|ftp)://.*") then path
+    else
+      spark.sparkContext.addFile(path)
+      val local = SparkFiles.get(baseName(path))
+      if !local.endsWith(".zst") then "file://" + local
+      else distribute(spark, decompressZstd(local))
+
+  private def baseName(path: String): String = path.substring(path.lastIndexOf('/') + 1)
+
+  private def distribute(spark: SparkSession, localPath: String): String =
+    spark.sparkContext.addFile("file://" + localPath)
+    "file://" + SparkFiles.get(baseName(localPath))
+
+  /** Decompresses a `.zst` file to a temp `.pgn` using zstd-jni (bundled with Spark at runtime). */
+  private def decompressZstd(srcPath: String): String =
+    val out = java.io.File.createTempFile("lichess-", ".pgn")
+    out.deleteOnExit()
+    val in = com.github.luben.zstd.ZstdInputStream(
+      java.io.BufferedInputStream(java.io.FileInputStream(srcPath)),
+    )
+    try java.nio.file.Files.copy(in, out.toPath, java.nio.file.StandardCopyOption.REPLACE_EXISTING)
+    finally in.close()
+    out.getAbsolutePath
@@ -37,15 +37,8 @@ object OpeningBookJob:
      outputDir: String,
      maxPlies: Int,
  ): Unit =
-    val games = spark.read
-      .format("jdbc")
-      .option("url", jdbcUrl)
-      .option("dbtable", "game_records")
-      .option("user", dbUser)
-      .option("password", dbPass)
-      .option("driver", "org.postgresql.Driver")
-      .option("fetchsize", "10000")
-      .load()
+    val games = GameSource
+      .load(spark, jdbcUrl, dbUser, dbPass)
      .select("pgn", "result")
      .filter(F.col("result").isNotNull.and(F.col("pgn").isNotNull))

@@ -79,15 +72,16 @@ object OpeningBookJob:
      .option("header", "true")
      .csv(s"$outputDir/opening_book_top1000")

-    top1000.write
-      .mode("overwrite")
-      .format("jdbc")
-      .option("url", jdbcUrl)
-      .option("dbtable", "analytics_opening_stats")
-      .option("user", dbUser)
-      .option("password", dbPass)
-      .option("driver", "org.postgresql.Driver")
-      .save()
+    if !GameSource.isPgnMode then
+      top1000.write
+        .mode("overwrite")
+        .format("jdbc")
+        .option("url", jdbcUrl)
+        .option("dbtable", "analytics_opening_stats")
+        .option("user", dbUser)
+        .option("password", dbPass)
+        .option("driver", "org.postgresql.Driver")
+        .save()

  /** Extracts the first `maxPlies` moves from a PGN column as a space-separated string.
    *
@@ -50,15 +50,8 @@ object PlayerClusteringJob:
      outputDir: String,
      k: Int,
  ): Unit =
-    val games = spark.read
-      .format("jdbc")
-      .option("url", jdbcUrl)
-      .option("dbtable", "game_records")
-      .option("user", dbUser)
-      .option("password", dbPass)
-      .option("driver", "org.postgresql.Driver")
-      .option("fetchsize", "10000")
-      .load()
+    val games = GameSource
+      .load(spark, jdbcUrl, dbUser, dbPass)
      .select("white_id", "black_id", "result", "move_count")
      .filter(F.col("result").isNotNull)

@@ -126,25 +119,26 @@ object PlayerClusteringJob:
      .option("header", "true")
      .csv(s"$outputDir/cluster_archetypes")

-    clustersDf.write
-      .mode("overwrite")
-      .format("jdbc")
-      .option("url", jdbcUrl)
-      .option("dbtable", "analytics_player_clusters")
-      .option("user", dbUser)
-      .option("password", dbPass)
-      .option("driver", "org.postgresql.Driver")
-      .save()
+    if !GameSource.isPgnMode then
+      clustersDf.write
+        .mode("overwrite")
+        .format("jdbc")
+        .option("url", jdbcUrl)
+        .option("dbtable", "analytics_player_clusters")
+        .option("user", dbUser)
+        .option("password", dbPass)
+        .option("driver", "org.postgresql.Driver")
+        .save()

-    archetypes.write
-      .mode("overwrite")
-      .format("jdbc")
-      .option("url", jdbcUrl)
-      .option("dbtable", "analytics_cluster_archetypes")
-      .option("user", dbUser)
-      .option("password", dbPass)
-      .option("driver", "org.postgresql.Driver")
-      .save()
+      archetypes.write
+        .mode("overwrite")
+        .format("jdbc")
+        .option("url", jdbcUrl)
+        .option("dbtable", "analytics_cluster_archetypes")
+        .option("user", dbUser)
+        .option("password", dbPass)
+        .option("driver", "org.postgresql.Driver")
+        .save()

  private def buildPlayerStats(games: org.apache.spark.sql.DataFrame): org.apache.spark.sql.DataFrame =
    val asWhite = games.select(
@@ -53,15 +53,8 @@ object PlayerGraphJob:
      dbPass: String,
      outputDir: String,
  ): Unit =
-    val gamesRdd: RDD[Row] = spark.read
-      .format("jdbc")
-      .option("url", jdbcUrl)
-      .option("dbtable", "game_records")
-      .option("user", dbUser)
-      .option("password", dbPass)
-      .option("driver", "org.postgresql.Driver")
-      .option("fetchsize", "10000")
-      .load()
+    val gamesRdd: RDD[Row] = GameSource
+      .load(spark, jdbcUrl, dbUser, dbPass)
      .select("white_id", "black_id", "result")
      .filter(F.col("result").isNotNull)
      .rdd
@@ -116,15 +109,16 @@ object PlayerGraphJob:
      .mode("overwrite")
      .parquet(s"$outputDir/player_graph")

-    result.write
-      .mode("overwrite")
-      .format("jdbc")
-      .option("url", jdbcUrl)
-      .option("dbtable", "analytics_player_graph")
-      .option("user", dbUser)
-      .option("password", dbPass)
-      .option("driver", "org.postgresql.Driver")
-      .save()
+    if !GameSource.isPgnMode then
+      result.write
+        .mode("overwrite")
+        .format("jdbc")
+        .option("url", jdbcUrl)
+        .option("dbtable", "analytics_player_graph")
+        .option("user", dbUser)
+        .option("password", dbPass)
+        .option("driver", "org.postgresql.Driver")
+        .save()

    // How many players belong to each connected component?
    // A large dominant component + many singletons is the expected shape.
@@ -34,15 +34,8 @@ object PlayerStatsJob:
      dbPass: String,
      outputDir: String,
  ): Unit =
-    val games = spark.read
-      .format("jdbc")
-      .option("url", jdbcUrl)
-      .option("dbtable", "game_records")
-      .option("user", dbUser)
-      .option("password", dbPass)
-      .option("driver", "org.postgresql.Driver")
-      .option("fetchsize", "10000")
-      .load()
+    val games = GameSource
+      .load(spark, jdbcUrl, dbUser, dbPass)
      .select("white_id", "black_id", "result", "move_count")
      .filter(F.col("result").isNotNull)

@@ -84,12 +77,13 @@ object PlayerStatsJob:
      .mode("overwrite")
      .parquet(s"$outputDir/player_stats")

-    stats.write
-      .mode("overwrite")
-      .format("jdbc")
-      .option("url", jdbcUrl)
-      .option("dbtable", "analytics_player_stats")
-      .option("user", dbUser)
-      .option("password", dbPass)
-      .option("driver", "org.postgresql.Driver")
-      .save()
+    if !GameSource.isPgnMode then
+      stats.write
+        .mode("overwrite")
+        .format("jdbc")
+        .option("url", jdbcUrl)
+        .option("dbtable", "analytics_player_stats")
+        .option("user", dbUser)
+        .option("password", dbPass)
+        .option("driver", "org.postgresql.Driver")
+        .save()
@@ -1,3 +1,3 @@
 MAJOR=0
-MINOR=2
+MINOR=3
 PATCH=0
@@ -205,3 +205,25 @@

 * **dependencies:** correct Jackson databind dependency group ID ([008d72d](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/008d72d826707c04205bac7de25170fae5fed861))
 * IO microservice ([#38](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/38)) ([a386f57](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/a386f57c21d34ead6cc6f92836c52b714597e289))
+##  (2026-06-21)
+
+### Features
+
+* **api:** define shared EventEnvelope and EventType for Redis EventBus ([#61](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/61)) ([595c172](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/595c172900da99de367c274488c3ccbeaef55882))
+* **core:** publish GameOver event to Redis Streams ([#64](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/64)) ([676e411](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/676e4110c0893917d8bc7f836db6a19c69c5e9a5))
+* **dto:** update GameWritebackEventDto for JSON deserialization and remove unused mixin ([576e3fe](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/576e3fea9bf1082549ea53efd3288474c42be93d))
+* **events:** migrate game-creation and bot flows to Redis Streams NCS-89 ([#62](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/62)) ([a24924c](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/a24924c23057db3d700a75dbc4333557789cd991))
+* **game:** add GET /{gameId}/fen-history endpoint ([fba324a](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/fba324a5b01c23f97e28621ad8b72265701e0f11))
+* NCS-13 Implement Threefold Repetition ([#31](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/31)) ([767d305](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/767d3051a76c266050b6335774d66e2db2273c16))
+* NCS-14 implemented insufficient moves rule ([#30](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/30)) ([b0399a4](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/b0399a4e489950083066c9538df9a84dcc7a4613))
+* NCS-21 Write Scripts to automate certain tasks ([#15](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/15)) ([8051871](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/80518719d536a087d339fe02530825dc07f8b388))
+* NCS-25 Add linters to keep quality up ([#27](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/27)) ([fd4e67d](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/fd4e67d4f782a7e955822d90cb909d0a81676fb2))
+* NCS-37 Quarkus integration ([#35](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/35)) ([f088c4e](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/f088c4e9ffcc498d3d1b6f01e8f50042d5830d55))
+* NCS-41 Bot Platform ([#33](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/33)) ([8744bee](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/8744bee2dd20966dae90a09c21a43d5b06f59e00))
+* **rule:** Rules as a microservice ([#39](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/39)) ([093134d](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/093134d36c6844ba02a36a28d5d044f09291cd1d))
+* true-microservices ([#40](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/40)) ([5909242](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/590924254e8a2754de661a57a03e43f89ceb6299))
+
+### Bug Fixes
+
+* **dependencies:** correct Jackson databind dependency group ID ([008d72d](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/008d72d826707c04205bac7de25170fae5fed861))
+* IO microservice ([#38](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/38)) ([a386f57](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/a386f57c21d34ead6cc6f92836c52b714597e289))
@@ -0,0 +1,3 @@
+package de.nowchess.api.dto
+
+final case class FenHistoryDto(fens: List[String])
@@ -1,3 +1,3 @@
 MAJOR=0
-MINOR=17
+MINOR=18
 PATCH=0
@@ -2109,3 +2109,76 @@

 * Revert "feat: add authentication permissions for metrics endpoints in application.yml" ([a298417](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/a298417b9e4d68dc73bbf40be63d9484536e9f83))
 * Revert "refactor: update metrics paths formatting in application.yml for clarity" ([3870566](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/38705663498d5f47c40dafe2f26198589ede8656))
+##  (2026-06-21)
+
+### Features
+
+* add authentication permissions for metrics endpoints in application.yml ([04edd4d](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/04edd4d6fd8a63196c36f6d67992832febc9bebb))
+* add CORS configuration and reorder JWT settings in application.yml ([a49f9be](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/a49f9be146f04c14561c305d980846a92f8c12b2))
+* add GameRules stub with PositionStatus enum ([76d4168](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/76d4168038de23e5d6083d4e8f0504fbf31d15a3))
+* add initialization metrics for various services ([d438e97](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/d438e97f32bdde0bfc63c1b4a8cc810cdd093166))
+* add MovedInCheck/Checkmate/Stalemate MoveResult variants (stub dispatch) ([8b7ec57](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/8b7ec57e5ea6ee1615a1883848a426dc07d26364))
+* add OpenTelemetry trace configuration with parentbased sampler ([3904d5a](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/3904d5ad8ad4930ddee65287a7bfab785a6148f5))
+* **config:** add GameWritebackEventDto to reflection targets ([87f29a7](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/87f29a720422f538ef70699533500e060337b8ea))
+* **config:** update application.yml for PostgreSQL and remove staging/production configurations ([2404e61](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/2404e6164c3b50ffccbea5238d636060d6abe4d6))
+* **config:** update application.yml for staging and production environments ([6113432](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/6113432a14c476a3a0dfc0d449e17d023697f2ba))
+* configure logging and add OpenTelemetry support ([#49](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/49)) ([d57c488](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/d57c4886612d1d92da0e1b79209fc83e6ef537a1))
+* **core:** publish GameOver event to Redis Streams ([#64](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/64)) ([676e411](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/676e4110c0893917d8bc7f836db6a19c69c5e9a5))
+* **events:** migrate game-creation and bot flows to Redis Streams NCS-89 ([#62](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/62)) ([a24924c](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/a24924c23057db3d700a75dbc4333557789cd991))
+* **game:** add GET /{gameId}/fen-history endpoint ([fba324a](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/fba324a5b01c23f97e28621ad8b72265701e0f11))
+* implement clock expiry scanning and handling for game records ([#53](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/53)) ([8f9eb12](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/8f9eb12f663efabe4dc72b94394438652ad0ef02))
+* implement GameRules with isInCheck, legalMoves, gameStatus ([94a02ff](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/94a02ff6849436d9496c70a0f16c21666dae8e4e))
+* implement legal castling ([#1](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/1)) ([00d326c](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/00d326c1ba67711fbe180f04e1100c3f01dd0254))
+* implement periodic scaling checks and enhance instance management in AutoScaler ([3f12f69](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/3f12f695f132b92f634d98df2c037292498b6e86))
+* **logging:** add DEBUG/INFO/WARN logging across services (NCS-72) ([#41](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/41)) ([804a4bf](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/804a4bf179e3dfb19e2be4390e7e543caf5237c6))
+* NCS-10 Implement Pawn Promotion ([#12](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/12)) ([13bfc16](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/13bfc16cfe25db78ec607db523ca6d993c13430c))
+* NCS-11 50-move rule ([#9](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/9)) ([412ed98](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/412ed986a95703a3b282276540153480ceed229d))
+* NCS-13 Implement Threefold Repetition ([#31](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/31)) ([767d305](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/767d3051a76c266050b6335774d66e2db2273c16))
+* NCS-14 implemented insufficient moves rule ([#30](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/30)) ([b0399a4](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/b0399a4e489950083066c9538df9a84dcc7a4613))
+* NCS-16 Core Separation via Patterns ([#10](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/10)) ([1361dfc](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/1361dfc89553b146864fb8ff3526cf12cf3f293a))
+* NCS-17 Implement basic ScalaFX UI ([#14](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/14)) ([3ff8031](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/3ff80318b4f16c59733a46498581a5c27f048287))
+* NCS-21 Write Scripts to automate certain tasks ([#15](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/15)) ([8051871](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/80518719d536a087d339fe02530825dc07f8b388))
+* NCS-25 Add linters to keep quality up ([#27](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/27)) ([fd4e67d](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/fd4e67d4f782a7e955822d90cb909d0a81676fb2))
+* NCS-37 Quarkus integration ([#35](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/35)) ([f088c4e](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/f088c4e9ffcc498d3d1b6f01e8f50042d5830d55))
+* NCS-40 Rework Draw System ([#34](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/34)) ([33e785d](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/33e785d22af87724839b62ae91dfe74a05b398c3))
+* NCS-41 Bot Platform ([#33](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/33)) ([8744bee](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/8744bee2dd20966dae90a09c21a43d5b06f59e00))
+* NCS-53 changed IO to MicroService for easier scaling ([#37](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/37)) ([b5a2966](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/b5a2966adafa9650f0f7d601bdeb8fdd13710327))
+* NCS-6 Implementing FEN & PGN ([#7](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/7)) ([f28e69d](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/f28e69dc181416aa2f221fdc4b45c2cda5efbf07))
+* NCS-78 Add Traceability to the Applications ([#48](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/48)) ([c96a09b](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/c96a09bb5cee59fc23205bb63baa8b217a7e1b00))
+* NCS-82 add Swiss-system tournament module ([#55](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/55)) ([c5661de](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/c5661de4a0ebf4b33211f5a391840dcf744656b7))
+* NCS-9 En passant implementation ([#8](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/8)) ([919beb3](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/919beb3b4bfa8caf2f90976a415fe9b19b7e9747))
+* **redis:** implement game writeback stream processing with error handling and retries ([ae3ef76](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/ae3ef766e8b7596a09e466cd4fb386119f17ca5c))
+* **reflection:** add native reflection configuration for tournament classes ([e318250](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/e31825021c0fca7cbe7d9f85755646114c83cf0c))
+* **rule:** Rules as a microservice ([#39](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/39)) ([093134d](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/093134d36c6844ba02a36a28d5d044f09291cd1d))
+* true-microservices ([#40](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/40)) ([5909242](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/590924254e8a2754de661a57a03e43f89ceb6299))
+* update application.yml with new API root paths and add Micrometer and OpenTelemetry dependencies ([72ce262](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/72ce262bc491f94297700e6002fb5d0812e2cc2a))
+* wire check/checkmate/stalemate into processMove and gameLoop ([5264a22](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/5264a225418b885c5e6ea6411b96f85e38837f6c))
+
+### Bug Fixes
+
+* add missing kings to gameLoop capture test board ([aedd787](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/aedd787b77203c2af934751dba7b784eaf165032))
+* **auth:** change InternalAuthFilter to use @Singleton and add HTTP tests for secret validation ([c08d530](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/c08d5303eb9e70d36c8eebf6a061ccb71e118fe5))
+* **auth:** update InternalAuthFilter to use @ApplicationScoped and add index-dependency configuration ([6e0fd95](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/6e0fd9523e001756ce7109e639ebb54be4fcdabf))
+* **core:** add logs to trace subscribeGame call in createGame ([f5614c3](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/f5614c358255598ba1230e42a56b22934d79183c))
+* correct test board positions and captureOutput/withInput interaction ([f0481e2](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/f0481e2561b779df00925b46ee281dc36a795150))
+* **heartbeat:** inject ObjectMapper into InstanceHeartbeatService ([#42](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/42)) ([0c98151](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/0c981517da1f94cd10ae396e47bde2b35d0b3ba0))
+* IO microservice ([#38](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/38)) ([a386f57](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/a386f57c21d34ead6cc6f92836c52b714597e289))
+* Lints ([dc224ab](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/dc224abe26acf5361c56956006e1cc51b75b0b7e))
+* NCS-84 More Verbose Logging ([#51](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/51)) ([4ad92ab](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/4ad92ab23698267f8faa59c4e18388d4a0042cca))
+* NCS-85 Database Writeback fails without Logs ([#52](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/52)) ([7323908](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/73239088d985f01aa6b1067ed9097a845e471d4f))
+* **pgn:** add SAN disambiguation and check/checkmate suffixes [NCS-42] ([#56](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/56)) ([2579539](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/2579539084152178f4482ddb7b84b7f1162f10da))
+* **redis:** add max pool wait time and switch to ReactiveRedisDataSource for heartbeat updates ([33e5017](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/33e5017f51a998327b180f778f73964cc10c05d3))
+* **redis:** enhance GameRedisSubscriberManager to use ReactiveRedisDataSource and improve subscription handling ([0eb752d](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/0eb752d4935377f75aab710b7f4eda4b29098e6a))
+* **redis:** prevent concurrent Redis heartbeat refreshes using AtomicBoolean ([847b132](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/847b13202cb909d18ca3304c27ebe17ce2312b8e))
+* **redis:** simplify refreshRedisHeartbeat logic and ensure proper error handling ([1813ea1](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/1813ea1d2d5d093f7925f87371b5e29820bf1136))
+* **redis:** update Redis configuration with max pool size and waiting parameters ([5baf6a7](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/5baf6a7cdbea484fc49c02e2b5a1c3919b7fa2c4))
+* remove unused HTTP root-path configurations from application.yml ([3ed3e59](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/3ed3e59ee456d54cd3d65ece4f36623e256b9736))
+* resolve 6 coordinator bugs (cache eviction, rebalance race, pod matching, lookup inefficiency) ([5619c82](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/5619c8223ad7091706909eda8c907a29d215fd30))
+* update documentation to reflect new functions in CoordinatorGrpcServer and InstanceRegistry ([f7ce4df](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/f7ce4df595cbdc2ef84122781f4851ff140c0f44))
+* update main class path in build configuration and adjust VCS directory mapping ([7b1f8b1](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/7b1f8b117623d327232a1a92a8a44d18582e0189))
+* update move validation to check for king safety ([#13](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/13)) ([e5e20c5](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/e5e20c566e368b12ca1dc59680c34e9112bf6762))
+
+### Reverts
+
+* Revert "feat: add authentication permissions for metrics endpoints in application.yml" ([a298417](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/a298417b9e4d68dc73bbf40be63d9484536e9f83))
+* Revert "refactor: update metrics paths formatting in application.yml for clarity" ([3870566](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/38705663498d5f47c40dafe2f26198589ede8656))
@@ -339,6 +339,18 @@ class GameResource:
    log.infof("Imported PGN game %s", entry.gameId)
    created(GameDtoMapper.toGameFullDto(entry, ioClient))

+  @GET
+  @Path("/{gameId}/fen-history")
+  @Produces(Array(MediaType.APPLICATION_JSON))
+  def getFenHistory(@PathParam("gameId") gameId: String): Response =
+    val entry   = registry.get(gameId).getOrElse(throw GameNotFoundException(gameId))
+    val engine  = entry.engine
+    val initial = engine.initialContext
+    val moves   = engine.context.moves
+    val contexts = moves.scanLeft(initial)((ctx, move) => engine.ruleSet.applyMove(ctx)(move))
+    val fens     = contexts.map(ctx => ioClient.exportFen(ctx))
+    ok(FenHistoryDto(fens))
+
  @GET
  @Path("/{gameId}/export/fen")
  @Produces(Array(MediaType.TEXT_PLAIN))
@@ -1,3 +1,3 @@
 MAJOR=0
-MINOR=51
+MINOR=52
 PATCH=0
@@ -310,3 +310,33 @@
 ### Reverts

 * Revert "refactor: update metrics paths formatting in application.yml for clarity" ([3870566](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/38705663498d5f47c40dafe2f26198589ede8656))
+##  (2026-06-19)
+
+### Features
+
+* add initialization metrics for various services ([d438e97](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/d438e97f32bdde0bfc63c1b4a8cc810cdd093166))
+* add OpenTelemetry trace configuration with parentbased sampler ([3904d5a](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/3904d5ad8ad4930ddee65287a7bfab785a6148f5))
+* **analytics:** add Spark batch analytics module ([#70](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/70)) ([39f1657](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/39f1657e1db6e84889af338c43be8cb5c03c3ec3))
+* **config:** update application.yml for PostgreSQL and remove staging/production configurations ([2404e61](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/2404e6164c3b50ffccbea5238d636060d6abe4d6))
+* **config:** update application.yml for staging and production environments ([6113432](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/6113432a14c476a3a0dfc0d449e17d023697f2ba))
+* configure logging and add OpenTelemetry support ([#49](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/49)) ([d57c488](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/d57c4886612d1d92da0e1b79209fc83e6ef537a1))
+* **docker:** add .dockerignore and .gitignore files for build exclusions ([c987d8e](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/c987d8e258c0e6c4cfbdaa8381c64c410d7a2b83))
+* **docker:** add Dockerfiles for building Quarkus application in native and JVM modes ([3f2d2bb](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/3f2d2bb4c97fa8cddba66e1da4427c54236dfeed))
+* **docker:** add Dockerfiles for Quarkus application in JVM and native modes ([34b9933](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/34b993304670cf2aa62cd2f6460cee7b9864b08e))
+* **events:** migrate game-creation and bot flows to Redis Streams NCS-89 ([#62](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/62)) ([a24924c](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/a24924c23057db3d700a75dbc4333557789cd991))
+* NCS-78 Add Traceability to the Applications ([#46](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/46)) ([649566e](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/649566eb3fcf38f91c8896a739f74ea318af312d))
+* NCS-78 Add Traceability to the Applications ([#47](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/47)) ([87dfc6c](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/87dfc6c2bcce7f7d58fc641bd8d468a2e584c108))
+* NCS-82 add Swiss-system tournament module ([#55](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/55)) ([c5661de](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/c5661de4a0ebf4b33211f5a391840dcf744656b7))
+* **official-bots:** consume GameOver stream for bot cleanup ([#67](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/67)) ([db9d153](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/db9d1533912f4b41c4d1ca80ccffdde5d23d6ff6))
+* **official-bots:** park expert bot on tournament server at startup ([#75](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/75)) ([30295a4](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/30295a4bb95855ee8261c92278bb9ebc80ee12ee))
+* true-microservices ([#40](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/40)) ([5909242](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/590924254e8a2754de661a57a03e43f89ceb6299))
+
+### Bug Fixes
+
+* enable official bots to connect to external tournament server ([#71](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/71)) ([688d30e](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/688d30e2b10026923372be5fca3c63eaaee2de2a))
+* **official-bots:** configure JWT verification ([#72](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/72)) ([98c64fc](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/98c64fc0d56dc542beb31c75f4b9056d91de03cd))
+* **official-bots:** NCS-70-auto-register official bots with account service ([#59](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/59)) ([7117a93](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/7117a93376272094d0b1a6abf2121254ce396684))
+
+### Reverts
+
+* Revert "refactor: update metrics paths formatting in application.yml for clarity" ([3870566](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/38705663498d5f47c40dafe2f26198589ede8656))
@@ -20,7 +20,7 @@ object TournamentBotConfig:
      tournamentId <- env.get("TOURNAMENT_ID").filter(_.nonEmpty)
      token        <- env.get("TOURNAMENT_BOT_TOKEN").filter(_.nonEmpty)
      botId        <- jwtSubject(token)
-      serverUrl  = env.getOrElse("TOURNAMENT_SERVER_URL", "http://localhost:8089")
+      serverUrl  = env.getOrElse("TOURNAMENT_SERVER_URL", "http://141.37.123.132:8086")
      difficulty = env.getOrElse("TOURNAMENT_BOT_DIFFICULTY", "medium")
    yield TournamentBotConfig(serverUrl, tournamentId, token, botId, difficulty)

@@ -39,10 +39,11 @@ class TournamentBotGamePlayer:
  // scalafix:on DisableSyntax.var

  val defaultServerUrl: String =
-    System.getenv().asScala.getOrElse("TOURNAMENT_SERVER_URL", "http://localhost:8089")
+    System.getenv().asScala.getOrElse("TOURNAMENT_SERVER_URL", "http://141.37.123.132:8086")

  @PostConstruct
  def initialize(): Unit =
+    parkOnStartup()
    config match
      case None =>
        log.info("Tournament bot disabled — set TOURNAMENT_ID and TOURNAMENT_BOT_TOKEN to enable")
@@ -50,6 +51,32 @@ class TournamentBotGamePlayer:
        log.infof("Tournament bot enabled — server=%s tournament=%s bot=%s", cfg.serverUrl, cfg.tournamentId, cfg.botId)
        startAsync(cfg)

+  private def parkOnStartup(): Unit =
+    park(defaultServerUrl, "expert") match
+      case Some(id) => log.infof("Parked expert bot on %s as id %s", defaultServerUrl, id)
+      case None     => log.warnf("Failed to park expert bot on %s", defaultServerUrl)
+
+  private def park(serverUrl: String, difficulty: String): Option[String] =
+    System.getenv().asScala.get("TOURNAMENT_BOT_TOKEN").filter(_.nonEmpty).flatMap { token =>
+      Try {
+        val body = s"""{"name":"${botName(difficulty)}"}"""
+        val response = client
+          .target(serverUrl)
+          .path("api")
+          .path("bots")
+          .request(MediaType.APPLICATION_JSON)
+          .header("Authorization", s"Bearer $token")
+          .post(Entity.entity(body, MediaType.APPLICATION_JSON))
+        if response.getStatus == 201 || response.getStatus == 200 then
+          val id = objectMapper.readTree(response.readEntity(classOf[String])).path("id").asText()
+          response.close()
+          Option(id).filter(_.nonEmpty)
+        else { log.warnf("Parking bot %s returned status %d", botName(difficulty), response.getStatus); response.close(); None }
+      }.getOrElse(None)
+    }
+
+  private def botName(difficulty: String): String = s"NowChess ${difficulty.capitalize}"
+
  def joinTournament(
      tournamentId: String,
      botToken: String,
@@ -1,3 +1,3 @@
 MAJOR=0
-MINOR=19
+MINOR=20
 PATCH=0
@@ -23,3 +23,17 @@
 ### Bug Fixes

 * **tournament:** replace scala.util.Random singleton with UUID for native image ([a50884a](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/a50884a11b1de500e74c18fd08d2d102d53cc3e9))
+##  (2026-06-21)
+
+### Features
+
+* **analytics:** add Spark batch analytics module ([#70](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/70)) ([39f1657](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/39f1657e1db6e84889af338c43be8cb5c03c3ec3))
+* NCS-121 pipeline for tournament ([#68](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/68)) ([145f467](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/145f4676483f92bfe6f2d9ca40e2cb4200982e87))
+* NCS-82 add Swiss-system tournament module ([#55](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/55)) ([c5661de](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/c5661de4a0ebf4b33211f5a391840dcf744656b7))
+* **reflection:** add GameWritebackEventDto to native reflection configuration ([1aee39c](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/1aee39c1ad286984501ac4b47da2b72d60b58a6f))
+* **reflection:** add native reflection configuration for tournament classes ([65bc6a7](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/65bc6a759937543df2d29905688bfa9e68d0c9d4))
+
+### Bug Fixes
+
+* **tournament:** replace scala.util.Random singleton with UUID for native image ([a50884a](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/a50884a11b1de500e74c18fd08d2d102d53cc3e9))
+* wrap server list response in ExternalTournamentServerList ([f2d79e4](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/f2d79e4952aea6bde762c294eb202474b7827054))
@@ -1,6 +1,6 @@
 package de.nowchess.tournament.resource

-import de.nowchess.tournament.dto.{ErrorDto, RegisterServerRequest}
+import de.nowchess.tournament.dto.{ErrorDto, ExternalTournamentServerList, RegisterServerRequest}
 import de.nowchess.tournament.service.TournamentServerRegistry
 import jakarta.annotation.security.RolesAllowed
 import jakarta.enterprise.context.ApplicationScoped
@@ -22,7 +22,7 @@ class TournamentServerResource:

  @GET
  def list(): Response =
-    Response.ok(registry.list()).build()
+    Response.ok(ExternalTournamentServerList(registry.list())).build()

  @POST
  def register(req: RegisterServerRequest): Response =
@@ -1,3 +1,3 @@
 MAJOR=0
-MINOR=3
+MINOR=4
 PATCH=0
@@ -259,3 +259,32 @@
 ### Reverts

 * Revert "refactor: update metrics paths formatting in application.yml for clarity" ([3870566](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/38705663498d5f47c40dafe2f26198589ede8656))
+##  (2026-06-19)
+
+### Features
+
+* add initialization metrics for various services ([d438e97](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/d438e97f32bdde0bfc63c1b4a8cc810cdd093166))
+* add OpenTelemetry trace configuration with parentbased sampler ([3904d5a](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/3904d5ad8ad4930ddee65287a7bfab785a6148f5))
+* **config:** update application.yml for PostgreSQL and remove staging/production configurations ([2404e61](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/2404e6164c3b50ffccbea5238d636060d6abe4d6))
+* **config:** update application.yml for staging and production environments ([6113432](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/6113432a14c476a3a0dfc0d449e17d023697f2ba))
+* configure logging and add OpenTelemetry support ([#49](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/49)) ([d57c488](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/d57c4886612d1d92da0e1b79209fc83e6ef537a1))
+* **docker:** add .dockerignore and .gitignore files for build exclusions ([c987d8e](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/c987d8e258c0e6c4cfbdaa8381c64c410d7a2b83))
+* **docker:** add Dockerfiles for building Quarkus application in native and JVM modes ([3f2d2bb](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/3f2d2bb4c97fa8cddba66e1da4427c54236dfeed))
+* **docker:** add Dockerfiles for Quarkus application in JVM and native modes ([34b9933](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/34b993304670cf2aa62cd2f6460cee7b9864b08e))
+* **docker:** add Dockerfiles for Quarkus application in JVM and native modes ([e5fe7d0](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/e5fe7d07a58e018151bb24f4ee37c06e72608ded))
+* **logging:** add DEBUG/INFO/WARN logging across services (NCS-72) ([#41](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/41)) ([804a4bf](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/804a4bf179e3dfb19e2be4390e7e543caf5237c6))
+* NCS-78 Add Traceability to the Applications ([#46](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/46)) ([649566e](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/649566eb3fcf38f91c8896a739f74ea318af312d))
+* NCS-78 Add Traceability to the Applications ([#47](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/47)) ([87dfc6c](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/87dfc6c2bcce7f7d58fc641bd8d468a2e584c108))
+* **reflection:** add native reflection configuration for tournament classes ([65bc6a7](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/65bc6a759937543df2d29905688bfa9e68d0c9d4))
+* true-microservices ([#40](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/40)) ([5909242](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/590924254e8a2754de661a57a03e43f89ceb6299))
+* update application.yml with new API root paths and add Micrometer and OpenTelemetry dependencies ([72ce262](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/72ce262bc491f94297700e6002fb5d0812e2cc2a))
+* **ws:** migrate challenge notifications to Redis Streams ([#66](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/66)) ([55f102c](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/55f102cbaa684be94a158b16aaa42a50b36afaf3))
+
+### Bug Fixes
+
+* NCS-122 authenticate WebSocket connections via first-message auth ([#73](https://git.janis-eccarius.de/NowChess/NowChessSystems/issues/73)) ([343e2bd](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/343e2bdd100649a96d96da8a6d98caad6de4ad14))
+* remove unused HTTP root-path configurations from application.yml ([3ed3e59](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/3ed3e59ee456d54cd3d65ece4f36623e256b9736))
+
+### Reverts
+
+* Revert "refactor: update metrics paths formatting in application.yml for clarity" ([3870566](https://git.janis-eccarius.de/NowChess/NowChessSystems/commit/38705663498d5f47c40dafe2f26198589ede8656))
@@ -3,7 +3,6 @@ package de.nowchess.ws.resource
 import de.nowchess.ws.config.RedisConfig
 import io.micrometer.core.instrument.{Counter, Gauge, MeterRegistry}
 import io.quarkus.redis.datasource.RedisDataSource
-import io.quarkus.redis.datasource.pubsub.PubSubCommands
 import io.quarkus.websockets.next.*
 import io.smallrye.jwt.auth.principal.JWTParser
 import jakarta.annotation.PostConstruct
@@ -34,6 +33,7 @@ class GameWebSocketResource:
  // scalafix:on DisableSyntax.var

  private val connections = new ConcurrentHashMap[String, ConnectionMeta]()
+  private val pendingAuth = ConcurrentHashMap.newKeySet[String]()

  @PostConstruct
  def initializeMetrics(): Unit = {
@@ -64,40 +64,60 @@ class GameWebSocketResource:
    s"${redisConfig.prefix}:game:$gameId:c2s"

  @OnOpen
-  def onOpen(connection: WebSocketConnection, handshake: HandshakeRequest): Unit =
+  def onOpen(connection: WebSocketConnection): Unit =
    activeGauge
-    val gameId   = connection.pathParam("gameId")
-    val playerId = resolvePlayerId(handshake)
-    log.infof("Game WebSocket opened — gameId=%s playerId=%s", gameId, playerId.getOrElse("anonymous"))
+    val gameId                    = connection.pathParam("gameId")
    val handler: Consumer[String] = msg => connection.sendText(msg).subscribe().`with`(_ => (), _ => ())
    val subscriber                = redis.pubsub(classOf[String]).subscribe(s2cTopic(gameId), handler)
-    connections.put(connection.id(), ConnectionMeta(gameId, subscriber, playerId))
+    connections.put(connection.id(), ConnectionMeta(gameId, subscriber, None))
    connectionsOpened.increment()
-    publishConnected(gameId, playerId)
+    pendingAuth.add(connection.id())
+    log.infof("Game WebSocket opened — gameId=%s connId=%s awaiting auth", gameId, connection.id())

  @OnTextMessage
  def onTextMessage(connection: WebSocketConnection, message: String): Unit =
    messagesReceived.increment()
-    Option(connections.get(connection.id())).foreach { meta =>
-      val enriched = meta.playerId match
-        case Some(pid) => injectPlayerId(message, pid)
-        case None      => message
-      redis.pubsub(classOf[String]).publish(c2sTopic(meta.gameId), enriched)
-    }
+    if pendingAuth.remove(connection.id()) then
+      val playerIdOpt =
+        parseAuthToken(message)
+          .flatMap(token => Try(jwtParser.parse(token)).toOption)
+          .map(_.getSubject)
+      playerIdOpt match
+        case None =>
+          log.warnf("Game WebSocket auth failed — closing connId=%s", connection.id())
+          connection.close().subscribe().`with`(_ => (), _ => ())
+        case Some(playerId) =>
+          Option(connections.get(connection.id())).foreach { meta =>
+            connections.put(connection.id(), meta.copy(playerId = Some(playerId)))
+            publishConnected(meta.gameId, Some(playerId))
+          }
+    else
+      Option(connections.get(connection.id())).foreach { meta =>
+        val enriched = meta.playerId match
+          case Some(pid) => injectPlayerId(message, pid)
+          case None      => message
+        redis.pubsub(classOf[String]).publish(c2sTopic(meta.gameId), enriched)
+      }

  @OnClose
  def onClose(connection: WebSocketConnection): Unit =
+    pendingAuth.remove(connection.id())
    Option(connections.remove(connection.id())).foreach { meta =>
      log.infof("Game WebSocket closed — gameId=%s", meta.gameId)
      meta.subscriber.unsubscribe(s2cTopic(meta.gameId))
      connectionsClosed.increment()
    }

-  private def resolvePlayerId(handshake: HandshakeRequest): Option[String] =
-    Option(handshake.header("Authorization"))
-      .filter(_.nonEmpty)
-      .flatMap(token => Try(jwtParser.parse(token)).toOption)
-      .map(_.getSubject)
+  private def parseAuthToken(message: String): Option[String] =
+    val trimmed = message.trim
+    if !trimmed.contains("\"type\":\"auth\"") then None
+    else
+      val start = trimmed.indexOf("\"token\":\"")
+      if start < 0 then None
+      else
+        val valueStart = start + 9
+        val end        = trimmed.indexOf('"', valueStart)
+        if end < 0 then None else Some(trimmed.substring(valueStart, end)).filter(_.nonEmpty)

  private def publishConnected(gameId: String, playerId: Option[String]): Unit =
    val connectedMsg = playerId match
@@ -32,6 +32,7 @@ class UserWebSocketResource:
  private val maxStreamLen = 1000L

  private val connections = new ConcurrentHashMap[String, (String, WebSocketConnection)]()
+  private val pendingAuth = ConcurrentHashMap.newKeySet[String]()

  private def userStreamKey(userId: String): String =
    s"${redisConfig.prefix}:user:$userId:events:stream"
@@ -39,29 +40,34 @@ class UserWebSocketResource:
  private def dlqKey: String = s"${redisConfig.prefix}:dlq"

  @OnOpen
-  def onOpen(connection: WebSocketConnection, handshake: HandshakeRequest): Unit =
-    val userIdOpt = Option(handshake.header("Authorization"))
-      .filter(_.nonEmpty)
-      .flatMap(token => Try(jwtParser.parse(token)).toOption)
-      .map(_.getSubject)
+  def onOpen(connection: WebSocketConnection): Unit =
+    pendingAuth.add(connection.id())

-    userIdOpt match
-      case None =>
-        log.warn("WebSocket opened with no valid JWT — closing connection")
-        connection.close().subscribe().`with`(_ => (), _ => ())
-      case Some(userId) =>
-        log.infof("User WebSocket opened — userId=%s connId=%s", userId, connection.id())
-        createGroupIfAbsent(userId, connection.id())
-        connections.put(connection.id(), (userId, connection))
-        executor.submit(
-          new Runnable:
-            def run(): Unit = pollLoop(connection.id(), userId, connection),
-        )
-        val connectedMsg = s"""{"type":"CONNECTED","userId":"$userId"}"""
-        connection.sendText(connectedMsg).subscribe().`with`(_ => (), _ => ())
+  @OnTextMessage
+  def onTextMessage(connection: WebSocketConnection, message: String): Unit =
+    if pendingAuth.remove(connection.id()) then
+      val userIdOpt =
+        parseAuthToken(message)
+          .flatMap(token => Try(jwtParser.parse(token)).toOption)
+          .map(_.getSubject)
+      userIdOpt match
+        case None =>
+          log.warn("WebSocket opened with no valid JWT — closing connection")
+          connection.close().subscribe().`with`(_ => (), _ => ())
+        case Some(userId) =>
+          log.infof("User WebSocket opened — userId=%s connId=%s", userId, connection.id())
+          createGroupIfAbsent(userId, connection.id())
+          connections.put(connection.id(), (userId, connection))
+          executor.submit(
+            new Runnable:
+              def run(): Unit = pollLoop(connection.id(), userId, connection),
+          )
+          val connectedMsg = s"""{"type":"CONNECTED","userId":"$userId"}"""
+          connection.sendText(connectedMsg).subscribe().`with`(_ => (), _ => ())

  @OnClose
  def onClose(connection: WebSocketConnection): Unit =
+    pendingAuth.remove(connection.id())
    log.infof("User WebSocket closed — connectionId=%s", connection.id())
    val userIdOpt = Option(connections.remove(connection.id())).map(_._1)
    userIdOpt.foreach { userId =>
@@ -128,3 +134,14 @@ class UserWebSocketResource:
    ) match
      case Failure(ex) => log.warnf(ex, "Failed to publish to stream %s", key)
      case Success(_)  => ()
+
+  private def parseAuthToken(message: String): Option[String] =
+    val trimmed = message.trim
+    if !trimmed.contains("\"type\":\"auth\"") then None
+    else
+      val start = trimmed.indexOf("\"token\":\"")
+      if start < 0 then None
+      else
+        val valueStart = start + 9
+        val end        = trimmed.indexOf('"', valueStart)
+        if end < 0 then None else Some(trimmed.substring(valueStart, end)).filter(_.nonEmpty)
@@ -1,3 +1,3 @@
 MAJOR=0
-MINOR=16
+MINOR=17
 PATCH=0
Author	SHA1	Message	Date
TeamCity	36a0b26c65	ci: bump version with Build-128	2026-06-21 09:39:54 +00:00
Janis Eccarius	f2d79e4952	fix: wrap server list response in ExternalTournamentServerList Build & Test (NowChessSystems) TeamCity build finished Details Frontend expects `{ servers: [...] }` but endpoint returned a plain array. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>	2026-06-21 11:15:39 +02:00
Janis Eccarius	fba324a5b0	feat(game): add GET /{gameId}/fen-history endpoint Build & Test (NowChessSystems) TeamCity build finished Details Returns a FEN string for every ply of the game (initial position + one per move) by replaying moves via ruleSet.applyMove and exporting each GameContext to FEN. Enables full per-move engine analysis from clients without requiring a chess library on their side. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>	2026-06-21 10:54:35 +02:00
TeamCity	7bf91b2280	ci: bump version with Build-126	2026-06-19 10:28:49 +00:00
lq64	343e2bdd10	fix: NCS-122 authenticate WebSocket connections via first-message auth (#73 ) Build & Test (NowChessSystems) TeamCity build finished Details Replace header-based auth (not possible with browser WebSocket API) with a first-message auth protocol: client sends {"type":"auth","token":"<JWT>"} as the first text frame; server validates and proceeds or closes the connection. Both GameWebSocketResource and UserWebSocketResource now hold incoming connections in a pendingAuth set until the auth frame arrives, preventing any game or event messages from being processed before identity is established. Also removes the broken Bearer-prefix handling that caused header-based auth to silently fail even for non-browser clients. --------- Co-authored-by: LQ63 <lkhermann@web.de> Reviewed-on: #73 Co-authored-by: Leon Hermann <lq@blackhole.local> Co-committed-by: Leon Hermann <lq@blackhole.local>	2026-06-17 10:42:52 +02:00
Janis	751a58b606	feat(official-bots): park expert bot on tournament server at startup (#76 ) Build & Test (NowChessSystems) TeamCity build was queued Details Reviewed-on: #76	2026-06-17 10:42:42 +02:00
Janis	30295a4bb9	feat(official-bots): park expert bot on tournament server at startup (#75 ) Build & Test (NowChessSystems) TeamCity build failed Details Park the expert bot on the configured tournament server (default http://141.37.123.132:8086) on startup, reusing a fixed TOURNAMENT_BOT_TOKEN when present instead of minting a new identity. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> Reviewed-on: #75	2026-06-17 10:35:36 +02:00