From 1fea41b066b486b6ee89ed98808c955d1f79f808 Mon Sep 17 00:00:00 2001
From: Fluent Crafter <205769460+fluentcrafter@users.noreply.github.com>
Date: Tue, 17 Jun 2025 09:19:44 +0100
Subject: [PATCH] coordinator: adds FakeLineaRollupSmartContractClient (#1161)

* coordinator: adds FakeLineaRollupSmartContractClient

* coordinator: change @get:Synchronized notation

* coordinator: move contractVersion to constructor

* jvm-libs: fix publish job
---
 .github/workflows/maven-release-all.yml       |   4 +-
 .../l1/FakeLineaRollupSmartContractClient.kt  | 105 ++++++++++++++++++
 2 files changed, 107 insertions(+), 2 deletions(-)
 create mode 100644 jvm-libs/linea/clients/linea-contract-clients/src/testFixtures/kotlin/linea/contract/l1/FakeLineaRollupSmartContractClient.kt

diff --git a/.github/workflows/maven-release-all.yml b/.github/workflows/maven-release-all.yml
index 2c4a0d63..791f4c8c 100644
--- a/.github/workflows/maven-release-all.yml
+++ b/.github/workflows/maven-release-all.yml
@@ -5,7 +5,7 @@ on:
       version:
         required: false
         type: string
-        description: 'Release version: e.g "1.0.0". Defaults to 0.0.<YYYYmmDDHHMMSS> if not provided'
+        description: 'Release version: e.g "1.0.0". Defaults to 0.0.1-v<YYYYmmDDHHMMSS> if not provided'
 
 jobs:
   release:
@@ -17,7 +17,7 @@ jobs:
           TIMESTAMP=`date -u +'%Y%m%d%H%M%S'`
           INPUT_VERSION=${{ github.event.inputs.version }}
           if [ -z "$INPUT_VERSION" ]; then
-            VERSION="0.0.$TIMESTAMP"
+            VERSION="0.0.1-v$TIMESTAMP"
           else
             VERSION=$INPUT_VERSION
           fi
diff --git a/jvm-libs/linea/clients/linea-contract-clients/src/testFixtures/kotlin/linea/contract/l1/FakeLineaRollupSmartContractClient.kt b/jvm-libs/linea/clients/linea-contract-clients/src/testFixtures/kotlin/linea/contract/l1/FakeLineaRollupSmartContractClient.kt
new file mode 100644
index 00000000..29fb4928
--- /dev/null
+++ b/jvm-libs/linea/clients/linea-contract-clients/src/testFixtures/kotlin/linea/contract/l1/FakeLineaRollupSmartContractClient.kt
@@ -0,0 +1,105 @@
+package linea.contract.l1
+
+import kotlinx.datetime.Clock
+import kotlinx.datetime.Instant
+import linea.domain.BlockParameter
+import linea.kotlin.encodeHex
+import tech.pegasys.teku.infrastructure.async.SafeFuture
+import java.util.concurrent.ConcurrentHashMap
+import kotlin.random.Random
+
+data class FinalizedBlock(
+  val number: ULong,
+  val timestamp: Instant,
+  val stateRootHash: ByteArray,
+) {
+  override fun equals(other: Any?): Boolean {
+    if (this === other) return true
+    if (javaClass != other?.javaClass) return false
+
+    other as FinalizedBlock
+
+    if (number != other.number) return false
+    if (timestamp != other.timestamp) return false
+    if (!stateRootHash.contentEquals(other.stateRootHash)) return false
+
+    return true
+  }
+
+  override fun hashCode(): Int {
+    var result = number.hashCode()
+    result = 31 * result + timestamp.hashCode()
+    result = 31 * result + stateRootHash.contentHashCode()
+    return result
+  }
+
+  override fun toString(): String {
+    return "FinalizedBlock(number=$number, timestamp=$timestamp, stateRootHash=${stateRootHash.encodeHex()})"
+  }
+}
+
+class FakeLineaRollupSmartContractClient(
+  val contractAddress: String = Random.nextBytes(20).encodeHex(),
+  @get:Synchronized @set:Synchronized
+  var contractVersion: LineaContractVersion = LineaContractVersion.V6,
+  _finalizedBlocks: List<FinalizedBlock> = listOf(FinalizedBlock(0uL, Clock.System.now(), Random.nextBytes(32))),
+  _messageRollingHashes: Map<ULong, ByteArray> = emptyMap(),
+) : LineaRollupSmartContractClientReadOnly {
+  val messageRollingHashes: MutableMap<ULong, ByteArray> = ConcurrentHashMap(_messageRollingHashes)
+  val finalizedBlocks: MutableMap<ULong, FinalizedBlock> = ConcurrentHashMap()
+
+  init {
+    require(_finalizedBlocks.size > 0) { "At least one finalized block is required" }
+    _finalizedBlocks.forEach { block -> finalizedBlocks.put(block.number, block) }
+    require(finalizedBlocks[0UL] != null) {
+      "Finalized block with number 0 must be present"
+    }
+  }
+
+  private fun lastFinalizedBlock(): FinalizedBlock =
+    finalizedBlocks.values.maxByOrNull { it.number }
+      ?: throw IllegalStateException("No finalized blocks available")
+
+  @Synchronized
+  fun setFinalizedBlock(
+    number: ULong,
+    timestamp: Instant = Clock.System.now(),
+    stateRootHash: ByteArray = Random.nextBytes(32),
+  ) {
+    val lastFinalizedBlock = lastFinalizedBlock().number
+
+    require(lastFinalizedBlock <= number) {
+      "next finalized blockNumber=$number must be greater than lastFinalizedBlock=$lastFinalizedBlock"
+    }
+
+    finalizedBlocks[number] = FinalizedBlock(number, timestamp, stateRootHash)
+  }
+
+  override fun getAddress(): String = contractAddress
+
+  override fun getVersion(): SafeFuture<LineaContractVersion> = SafeFuture.completedFuture(contractVersion)
+
+  override fun finalizedL2BlockNumber(blockParameter: BlockParameter): SafeFuture<ULong> =
+    SafeFuture.completedFuture(lastFinalizedBlock().number)
+
+  override fun finalizedL2BlockTimestamp(blockParameter: BlockParameter): SafeFuture<ULong> =
+    SafeFuture.completedFuture(lastFinalizedBlock().timestamp.epochSeconds.toULong())
+
+  override fun getMessageRollingHash(
+    blockParameter: BlockParameter,
+    messageNumber: Long,
+  ): SafeFuture<ByteArray> = SafeFuture.completedFuture(messageRollingHashes[messageNumber.toULong()] ?: ByteArray(32))
+
+  override fun isBlobShnarfPresent(
+    blockParameter: BlockParameter,
+    shnarf: ByteArray,
+  ): SafeFuture<Boolean> = SafeFuture.completedFuture(false)
+
+  override fun blockStateRootHash(
+    blockParameter: BlockParameter,
+    lineaL2BlockNumber: ULong,
+  ): SafeFuture<ByteArray> {
+    val stateRootHash = finalizedBlocks[lineaL2BlockNumber]?.stateRootHash ?: ByteArray(32)
+    return SafeFuture.completedFuture(stateRootHash)
+  }
+}