Implement startBitcoindRegtest Gradle Task

build-logic/regtest/build.gradle

@@ -0,0 +1,17 @@
+plugins {
+    id 'org.jetbrains.kotlin.jvm' version '1.7.10'
+    id 'org.gradle.kotlin.kotlin-dsl' version '2.4.1'
+}
+
+repositories {
+    mavenCentral()
+}
+
+gradlePlugin {
+    plugins {
+        simplePlugin {
+            id = 'bisq.gradle.regtest_plugin.RegtestPlugin'
+            implementationClass = 'bisq.gradle.regtest_plugin.RegtestPlugin'
+        }
+    }
+}

build-logic/regtest/src/main/kotlin/bisq/gradle/regtest_plugin/RegtestPlugin.kt

@@ -0,0 +1,17 @@
+package bisq.gradle.regtest_plugin
+
+import org.gradle.api.Plugin
+import org.gradle.api.Project
+import org.gradle.kotlin.dsl.register
+
+class RegtestPlugin : Plugin<Project> {
+
+    override fun apply(project: Project) {
+        val startBitcoindTask = project.tasks.register<StartBitcoindTask>("startBitcoindRegtest") {
+            dataDirectory.set(project.layout.projectDirectory.dir(".localnet/bitcoind"))
+            rpcUser.set("bisqdao")
+            rpcPassword.set("bsq")
+            blockNotifyArg.set(".localnet/bitcoind/blocknotify %s")
+        }
+    }
+}

build-logic/regtest/src/main/kotlin/bisq/gradle/regtest_plugin/StartBitcoindTask.kt

@@ -0,0 +1,47 @@
+package bisq.gradle.regtest_plugin
+
+import org.gradle.api.DefaultTask
+import org.gradle.api.file.DirectoryProperty
+import org.gradle.api.provider.Property
+import org.gradle.api.tasks.Input
+import org.gradle.api.tasks.InputDirectory
+import org.gradle.api.tasks.TaskAction
+
+abstract class StartBitcoindTask : DefaultTask() {
+
+    @get:InputDirectory
+    abstract val dataDirectory: DirectoryProperty
+
+    @get:Input
+    abstract val rpcUser: Property<String>
+
+    @get:Input
+    abstract val rpcPassword: Property<String>
+
+    @get:Input
+    abstract val blockNotifyArg: Property<String>
+
+    @TaskAction
+    fun run() {
+        val processBuilder = ProcessBuilder(
+                "bitcoind",
+                "-datadir=${dataDirectory.asFile.get().absolutePath}",
+                "-regtest",
+
+                "-prune=0",
+                "-txindex=1",
+                "-peerbloomfilters=1",
+                "-server",
+
+                "-rpcuser=${rpcUser.get()}",
+                "-rpcpassword=${rpcPassword.get()}",
+
+                "-blocknotify= ${blockNotifyArg.get()}"
+        )
+
+        processBuilder.redirectErrorStream(true)
+        processBuilder.redirectOutput(ProcessBuilder.Redirect.DISCARD)
+
+        processBuilder.start()
+    }
+}

build-logic/settings.gradle

@@ -10,4 +10,5 @@ include 'app-start-plugin'
 include 'commons'
 include 'gradle-tasks'
 include 'packaging'
+include 'regtest'
 include 'tor-binary'

build.gradle

@@ -6,6 +6,10 @@ buildscript {
     }
 }
 
+plugins {
+    id 'bisq.gradle.regtest_plugin.RegtestPlugin'
+}
+
 if (hasProperty('buildScan')) {
     buildScan {
         termsOfServiceUrl = 'https://gradle.com/terms-of-service'