Removed Globals class

README.md

@@ -232,3 +232,4 @@ zmqpubrawtx=tcp://127.0.0.1:29001
 * [1] [The Bitcoin Lightning Network: Scalable Off-Chain Instant Payments](https://lightning.network/lightning-network-paper.pdf) by Joseph Poon and Thaddeus Dryja
 * [2] [Reaching The Ground With Lightning](https://github.com/ElementsProject/lightning/raw/master/doc/deployable-lightning.pdf) by Rusty Russell
 * [3] [Lightning Network Explorer](https://explorer.acinq.co) - Explore testnet LN nodes you can connect to
+

eclair-core/src/main/scala/fr/acinq/eclair/CltvExpiry.scala

@@ -49,7 +49,7 @@ case class CltvExpiryDelta(private val underlying: Int) extends Ordered[CltvExpi
   /**
    * Adds the current block height to the given delta to obtain an absolute expiry.
    */
-  def toCltvExpiry = CltvExpiry(Globals.blockCount.get() + underlying)
+  def toCltvExpiry(blockHeight: Long) = CltvExpiry(blockHeight + underlying)
 
   // @formatter:off
   def +(other: Int): CltvExpiryDelta = CltvExpiryDelta(underlying + other)

eclair-core/src/main/scala/fr/acinq/eclair/Eclair.scala

@@ -272,7 +272,7 @@ class EclairImpl(appKit: Kit) extends Eclair {
     GetInfoResponse(nodeId = appKit.nodeParams.nodeId,
       alias = appKit.nodeParams.alias,
       chainHash = appKit.nodeParams.chainHash,
-      blockHeight = Globals.blockCount.intValue(),
+      blockHeight = appKit.nodeParams.currentBlockHeight.toInt,
       publicAddresses = appKit.nodeParams.publicAddresses)
   )
 

eclair-core/src/main/scala/fr/acinq/eclair/NodeParams.scala

@@ -20,6 +20,7 @@ import java.io.File
 import java.net.InetSocketAddress
 import java.nio.file.Files
 import java.util.concurrent.TimeUnit
+import java.util.concurrent.atomic.AtomicLong
 
 import com.typesafe.config.{Config, ConfigFactory}
 import fr.acinq.bitcoin.Crypto.PublicKey
@@ -41,6 +42,7 @@ import scala.concurrent.duration.FiniteDuration
  * Created by PM on 26/02/2017.
  */
 case class NodeParams(keyManager: KeyManager,
+                      private val blockCount: AtomicLong,
                       alias: String,
                       color: Color,
                       publicAddresses: List[NodeAddress],
@@ -80,6 +82,7 @@ case class NodeParams(keyManager: KeyManager,
                       maxPaymentAttempts: Int) {
   val privateKey = keyManager.nodeKey.privateKey
   val nodeId = keyManager.nodeId
+  def currentBlockHeight: Long = blockCount.get
 }
 
 object NodeParams {
@@ -124,7 +127,7 @@ object NodeParams {
     }
   }
 
-  def makeNodeParams(config: Config, keyManager: KeyManager, torAddress_opt: Option[NodeAddress], database: Databases, feeEstimator: FeeEstimator): NodeParams = {
+  def makeNodeParams(config: Config, keyManager: KeyManager, torAddress_opt: Option[NodeAddress], database: Databases, blockCount: AtomicLong, feeEstimator: FeeEstimator): NodeParams = {
 
     val chain = config.getString("chain")
     val chainHash = makeChainHash(chain)
@@ -201,6 +204,7 @@ object NodeParams {
 
     NodeParams(
       keyManager = keyManager,
+      blockCount = blockCount,
       alias = nodeAlias,
       color = Color(color(0), color(1), color(2)),
       publicAddresses = addresses,

eclair-core/src/main/scala/fr/acinq/eclair/Setup.scala

@@ -20,6 +20,7 @@ import java.io.File
 import java.net.InetSocketAddress
 import java.sql.DriverManager
 import java.util.concurrent.TimeUnit
+import java.util.concurrent.atomic.{AtomicLong, AtomicReference}
 
 import akka.Done
 import akka.actor.{ActorRef, ActorSystem, Props, SupervisorStrategy}
@@ -92,12 +93,31 @@ class Setup(datadir: File,
     case None => Databases.sqliteJDBC(chaindir)
   }
 
+  /**
+   * This counter holds the current blockchain height.
+   * It is mainly used to calculate htlc expiries.
+   * The value is read by all actors, hence it needs to be thread-safe.
+   */
+  val blockCount = new AtomicLong(0)
+
+  /**
+   * This holds the current feerates, in satoshi-per-kilobytes.
+   * The value is read by all actors, hence it needs to be thread-safe.
+   */
+  val feeratesPerKB = new AtomicReference[FeeratesPerKB](null)
+
+  /**
+   * This holds the current feerates, in satoshi-per-kw.
+   * The value is read by all actors, hence it needs to be thread-safe.
+   */
+  val feeratesPerKw = new AtomicReference[FeeratesPerKw](null)
+
   val feeEstimator = new FeeEstimator {
-    override def getFeeratePerKb(target: Int): Long = Globals.feeratesPerKB.get().feePerBlock(target)
-    override def getFeeratePerKw(target: Int): Long = Globals.feeratesPerKw.get().feePerBlock(target)
+    override def getFeeratePerKb(target: Int): Long = feeratesPerKB.get().feePerBlock(target)
+    override def getFeeratePerKw(target: Int): Long = feeratesPerKw.get().feePerBlock(target)
   }
 
-  val nodeParams = NodeParams.makeNodeParams(config, keyManager, initTor(), database, feeEstimator)
+  val nodeParams = NodeParams.makeNodeParams(config, keyManager, initTor(), database, blockCount, feeEstimator)
 
   val serverBindingAddress = new InetSocketAddress(
     config.getString("server.binding-ip"),
@@ -169,7 +189,7 @@ class Setup(datadir: File,
           val stream = classOf[Setup].getResourceAsStream(addressesFile)
           ElectrumClientPool.readServerAddresses(stream, sslEnabled)
       }
-      val electrumClient = system.actorOf(SimpleSupervisor.props(Props(new ElectrumClientPool(addresses)), "electrum-client", SupervisorStrategy.Resume))
+      val electrumClient = system.actorOf(SimpleSupervisor.props(Props(new ElectrumClientPool(blockCount, addresses)), "electrum-client", SupervisorStrategy.Resume))
       Electrum(electrumClient)
   }
 
@@ -192,8 +212,8 @@ class Setup(datadir: File,
           blocks_72 = config.getLong("on-chain-fees.default-feerates.72"),
           blocks_144 = config.getLong("on-chain-fees.default-feerates.144")
         )
-        Globals.feeratesPerKB.set(confDefaultFeerates)
-        Globals.feeratesPerKw.set(FeeratesPerKw(confDefaultFeerates))
+        feeratesPerKB.set(confDefaultFeerates)
+        feeratesPerKw.set(FeeratesPerKw(confDefaultFeerates))
         confDefaultFeerates
       }
       minFeeratePerByte = config.getLong("min-feerate")
@@ -207,10 +227,10 @@ class Setup(datadir: File,
       }
       _ = system.scheduler.schedule(0 seconds, 10 minutes)(feeProvider.getFeerates.map {
         case feerates: FeeratesPerKB =>
-          Globals.feeratesPerKB.set(feerates)
-          Globals.feeratesPerKw.set(FeeratesPerKw(feerates))
-          system.eventStream.publish(CurrentFeerates(Globals.feeratesPerKw.get))
-          logger.info(s"current feeratesPerKB=${Globals.feeratesPerKB.get()} feeratesPerKw=${Globals.feeratesPerKw.get()}")
+          feeratesPerKB.set(feerates)
+          feeratesPerKw.set(FeeratesPerKw(feerates))
+          system.eventStream.publish(CurrentFeerates(feeratesPerKw.get))
+          logger.info(s"current feeratesPerKB=${feeratesPerKB.get()} feeratesPerKw=${feeratesPerKw.get()}")
           feeratesRetrieved.trySuccess(Done)
       })
       _ <- feeratesRetrieved.future
@@ -219,11 +239,11 @@ class Setup(datadir: File,
         case Bitcoind(bitcoinClient) =>
           system.actorOf(SimpleSupervisor.props(Props(new ZMQActor(config.getString("bitcoind.zmqblock"), Some(zmqBlockConnected))), "zmqblock", SupervisorStrategy.Restart))
           system.actorOf(SimpleSupervisor.props(Props(new ZMQActor(config.getString("bitcoind.zmqtx"), Some(zmqTxConnected))), "zmqtx", SupervisorStrategy.Restart))
-          system.actorOf(SimpleSupervisor.props(ZmqWatcher.props(new ExtendedBitcoinClient(new BatchingBitcoinJsonRPCClient(bitcoinClient))), "watcher", SupervisorStrategy.Resume))
+          system.actorOf(SimpleSupervisor.props(ZmqWatcher.props(blockCount, new ExtendedBitcoinClient(new BatchingBitcoinJsonRPCClient(bitcoinClient))), "watcher", SupervisorStrategy.Resume))
         case Electrum(electrumClient) =>
           zmqBlockConnected.success(Done)
           zmqTxConnected.success(Done)
-          system.actorOf(SimpleSupervisor.props(Props(new ElectrumWatcher(electrumClient)), "watcher", SupervisorStrategy.Resume))
+          system.actorOf(SimpleSupervisor.props(Props(new ElectrumWatcher(blockCount, electrumClient)), "watcher", SupervisorStrategy.Resume))
       }
 
       router = system.actorOf(SimpleSupervisor.props(Router.props(nodeParams, watcher, Some(routerInitialized)), "router", SupervisorStrategy.Resume))

eclair-core/src/main/scala/fr/acinq/eclair/blockchain/bitcoind/ZmqWatcher.scala

@@ -17,11 +17,11 @@
 package fr.acinq.eclair.blockchain.bitcoind
 
 import java.util.concurrent.Executors
+import java.util.concurrent.atomic.AtomicLong
 
 import akka.actor.{Actor, ActorLogging, Cancellable, Props, Terminated}
 import akka.pattern.pipe
 import fr.acinq.bitcoin._
-import fr.acinq.eclair.Globals
 import fr.acinq.eclair.blockchain._
 import fr.acinq.eclair.blockchain.bitcoind.rpc.ExtendedBitcoinClient
 import fr.acinq.eclair.channel.BITCOIN_PARENT_TX_CONFIRMED
@@ -39,7 +39,7 @@ import scala.util.Try
   * - also uses bitcoin-core rpc api, most notably for tx confirmation count and blockcount (because reorgs)
   * Created by PM on 21/02/2016.
   */
-class ZmqWatcher(client: ExtendedBitcoinClient)(implicit ec: ExecutionContext = ExecutionContext.global) extends Actor with ActorLogging {
+class ZmqWatcher(blockCount: AtomicLong, client: ExtendedBitcoinClient)(implicit ec: ExecutionContext = ExecutionContext.global) extends Actor with ActorLogging {
 
   import ZmqWatcher._
 
@@ -80,7 +80,7 @@ class ZmqWatcher(client: ExtendedBitcoinClient)(implicit ec: ExecutionContext =
       client.getBlockCount.map {
         case count =>
           log.debug(s"setting blockCount=$count")
-          Globals.blockCount.set(count)
+          blockCount.set(count)
           context.system.eventStream.publish(CurrentBlockCount(count))
       }
       // TODO: beware of the herd effect
@@ -151,7 +151,7 @@ class ZmqWatcher(client: ExtendedBitcoinClient)(implicit ec: ExecutionContext =
       context become watching(watches + w, addWatchedUtxos(watchedUtxos, w), block2tx, nextTick)
 
     case PublishAsap(tx) =>
-      val blockCount = Globals.blockCount.get()
+      val blockCount = this.blockCount.get()
       val cltvTimeout = Scripts.cltvTimeout(tx)
       val csvTimeout = Scripts.csvTimeout(tx)
       if (csvTimeout > 0) {
@@ -168,7 +168,7 @@ class ZmqWatcher(client: ExtendedBitcoinClient)(implicit ec: ExecutionContext =
 
     case WatchEventConfirmed(BITCOIN_PARENT_TX_CONFIRMED(tx), blockHeight, _, _) =>
       log.info(s"parent tx of txid=${tx.txid} has been confirmed")
-      val blockCount = Globals.blockCount.get()
+      val blockCount = this.blockCount.get()
       val csvTimeout = Scripts.csvTimeout(tx)
       val absTimeout = blockHeight + csvTimeout
       if (absTimeout > blockCount) {
@@ -226,7 +226,7 @@ class ZmqWatcher(client: ExtendedBitcoinClient)(implicit ec: ExecutionContext =
 
 object ZmqWatcher {
 
-  def props(client: ExtendedBitcoinClient)(implicit ec: ExecutionContext = ExecutionContext.global) = Props(new ZmqWatcher(client)(ec))
+  def props(blockCount: AtomicLong, client: ExtendedBitcoinClient)(implicit ec: ExecutionContext = ExecutionContext.global) = Props(new ZmqWatcher(blockCount, client)(ec))
 
   case object TickNewBlock
 

eclair-core/src/main/scala/fr/acinq/eclair/blockchain/electrum/ElectrumClientPool.scala

@@ -18,10 +18,10 @@ package fr.acinq.eclair.blockchain.electrum
 
 import java.io.InputStream
 import java.net.InetSocketAddress
+import java.util.concurrent.atomic.AtomicLong
 
 import akka.actor.{Actor, ActorRef, FSM, OneForOneStrategy, Props, SupervisorStrategy, Terminated}
 import fr.acinq.bitcoin.BlockHeader
-import fr.acinq.eclair.Globals
 import fr.acinq.eclair.blockchain.CurrentBlockCount
 import fr.acinq.eclair.blockchain.electrum.ElectrumClient.SSL
 import fr.acinq.eclair.blockchain.electrum.ElectrumClientPool.ElectrumServerAddress
@@ -32,7 +32,7 @@ import scala.concurrent.ExecutionContext
 import scala.concurrent.duration._
 import scala.util.Random
 
-class ElectrumClientPool(serverAddresses: Set[ElectrumServerAddress])(implicit val ec: ExecutionContext) extends Actor with FSM[ElectrumClientPool.State, ElectrumClientPool.Data] {
+class ElectrumClientPool(blockCount: AtomicLong, serverAddresses: Set[ElectrumServerAddress])(implicit val ec: ExecutionContext) extends Actor with FSM[ElectrumClientPool.State, ElectrumClientPool.Data] {
   import ElectrumClientPool._
 
   val statusListeners = collection.mutable.HashSet.empty[ActorRef]
@@ -166,10 +166,10 @@ class ElectrumClientPool(serverAddresses: Set[ElectrumServerAddress])(implicit v
 
   private def updateBlockCount(blockCount: Long): Unit = {
     // when synchronizing we don't want to advertise previous blocks
-    if (Globals.blockCount.get() < blockCount) {
+    if (this.blockCount.get() < blockCount) {
       log.debug("current blockchain height={}", blockCount)
       context.system.eventStream.publish(CurrentBlockCount(blockCount))
-      Globals.blockCount.set(blockCount)
+      this.blockCount.set(blockCount)
     }
   }
 }

eclair-core/src/main/scala/fr/acinq/eclair/blockchain/electrum/ElectrumWatcher.scala

@@ -16,20 +16,21 @@
 
 package fr.acinq.eclair.blockchain.electrum
 
-import java.net.InetSocketAddress
+import java.util.concurrent.atomic.AtomicLong
 
-import akka.actor.{Actor, ActorLogging, ActorRef, ActorSystem, Props, Stash, Terminated}
+import akka.actor.{Actor, ActorLogging, ActorRef, Stash, Terminated}
 import fr.acinq.bitcoin.{BlockHeader, ByteVector32, Script, Transaction, TxIn, TxOut}
 import fr.acinq.eclair.blockchain._
-import fr.acinq.eclair.blockchain.electrum.ElectrumClient.{SSL, computeScriptHash}
-import fr.acinq.eclair.channel.{BITCOIN_FUNDING_DEPTHOK, BITCOIN_FUNDING_SPENT, BITCOIN_PARENT_TX_CONFIRMED}
+import fr.acinq.eclair.blockchain.electrum.ElectrumClient.computeScriptHash
+import fr.acinq.eclair.channel.BITCOIN_PARENT_TX_CONFIRMED
 import fr.acinq.eclair.transactions.Scripts
-import fr.acinq.eclair.{Globals, LongToBtcAmount, ShortChannelId, TxCoordinates}
+import fr.acinq.eclair.{LongToBtcAmount, ShortChannelId, TxCoordinates}
 
 import scala.collection.SortedMap
 import scala.collection.immutable.Queue
 
-class ElectrumWatcher(client: ActorRef) extends Actor with Stash with ActorLogging {
+
+class ElectrumWatcher(blockCount: AtomicLong, client: ActorRef) extends Actor with Stash with ActorLogging {
 
   client ! ElectrumClient.AddStatusListener(self)
 
@@ -162,7 +163,7 @@ class ElectrumWatcher(client: ActorRef) extends Actor with Stash with ActorLoggi
     case ElectrumClient.ServerError(ElectrumClient.GetTransaction(txid, Some(origin: ActorRef)), _) => origin ! GetTxWithMetaResponse(txid, None, tip.time)
 
     case PublishAsap(tx) =>
-      val blockCount = Globals.blockCount.get()
+      val blockCount = this.blockCount.get()
       val cltvTimeout = Scripts.cltvTimeout(tx)
       val csvTimeout = Scripts.csvTimeout(tx)
       if (csvTimeout > 0) {
@@ -183,7 +184,7 @@ class ElectrumWatcher(client: ActorRef) extends Actor with Stash with ActorLoggi
 
     case WatchEventConfirmed(BITCOIN_PARENT_TX_CONFIRMED(tx), blockHeight, _, _) =>
       log.info(s"parent tx of txid=${tx.txid} has been confirmed")
-      val blockCount = Globals.blockCount.get()
+      val blockCount = this.blockCount.get()
       val csvTimeout = Scripts.csvTimeout(tx)
       val absTimeout = blockHeight + csvTimeout
       if (absTimeout > blockCount) {
@@ -211,38 +212,3 @@ class ElectrumWatcher(client: ActorRef) extends Actor with Stash with ActorLoggi
   }
 
 }
-
-object ElectrumWatcher extends App {
-
-  val system = ActorSystem()
-
-  import scala.concurrent.ExecutionContext.Implicits.global
-
-  class Root extends Actor with ActorLogging {
-    val client = context.actorOf(Props(new ElectrumClient(new InetSocketAddress("localhost", 51000), ssl = SSL.OFF)), "client")
-    client ! ElectrumClient.AddStatusListener(self)
-
-    override def unhandled(message: Any): Unit = {
-      super.unhandled(message)
-      log.warning(s"unhandled message $message")
-    }
-
-    def receive = {
-      case ElectrumClient.ElectrumReady(_, _, _) =>
-        log.info(s"starting watcher")
-        context become running(context.actorOf(Props(new ElectrumWatcher(client)), "watcher"))
-    }
-
-    def running(watcher: ActorRef): Receive = {
-      case watch: Watch => watcher forward watch
-    }
-  }
-
-  val root = system.actorOf(Props[Root], "root")
-  val scanner = new java.util.Scanner(System.in)
-  while (true) {
-    val tx = Transaction.read(scanner.nextLine())
-    root ! WatchSpent(root, tx.txid, 0, tx.txOut(0).publicKeyScript, BITCOIN_FUNDING_SPENT)
-    root ! WatchConfirmed(root, tx.txid, tx.txOut(0).publicKeyScript, 4L, BITCOIN_FUNDING_DEPTHOK)
-  }
-}

eclair-core/src/main/scala/fr/acinq/eclair/channel/Channel.scala

@@ -601,7 +601,7 @@ class Channel(val nodeParams: NodeParams, val wallet: EclairWallet, remoteNodeId
       handleCommandError(AddHtlcFailed(d.channelId, c.paymentHash, error, origin(c), Some(d.channelUpdate), Some(c)), c)
 
     case Event(c: CMD_ADD_HTLC, d: DATA_NORMAL) =>
-      Try(Commitments.sendAdd(d.commitments, c, origin(c))) match {
+      Try(Commitments.sendAdd(d.commitments, c, origin(c), nodeParams.currentBlockHeight)) match {
         case Success(Right((commitments1, add))) =>
           if (c.commit) self ! CMD_SIGN
           handleCommandSuccess(sender, d.copy(commitments = commitments1)) sending add