fixed bug in batched pipeline

build.sbt

@@ -6,7 +6,7 @@ lazy val commonSettings: Seq[Setting[_]] = Seq(
   organization := "net.debasishg",
   version := "3.42-SNAPSHOT",
   scalaVersion := "2.13.6",
-  crossScalaVersions := Seq("2.12.14", "2.11.12", "2.10.7"),
+  crossScalaVersions := Seq("2.13.6", "2.12.14", "2.11.12", "2.10.7"),
 
   scalacOptions in Compile ++= Seq( "-unchecked", "-feature", "-language:postfixOps", "-deprecation" ),
 

src/main/scala/com/redis/BaseOperations.scala

@@ -47,14 +47,14 @@ trait BaseOperations extends BaseApi {
     send("KEYS", List(pattern))(asList)
 
   override def time[A](implicit format: Format, parse: Parse[A]): Option[List[Option[A]]] =
-    send("TIME", false)(asList)
+    send("TIME")(asList)
 
   @deprecated("use randomkey", "2.8")
   def randkey[A](implicit parse: Parse[A]): Option[A] =
-    send("RANDOMKEY", false)(asBulk)
+    send("RANDOMKEY")(asBulk)
 
   override def randomkey[A](implicit parse: Parse[A]): Option[A] =
-    send("RANDOMKEY", false)(asBulk)
+    send("RANDOMKEY")(asBulk)
 
   override def rename(oldkey: Any, newkey: Any)(implicit format: Format): Boolean =
     send("RENAME", List(oldkey, newkey))(asBoolean)
@@ -63,7 +63,7 @@ trait BaseOperations extends BaseApi {
     send("RENAMENX", List(oldkey, newkey))(asBoolean)
 
   override def dbsize: Option[Long] =
-    send("DBSIZE", false)(asLong)
+    send("DBSIZE")(asLong)
 
   override def exists(key: Any)(implicit format: Format): Boolean =
     send("EXISTS", List(key))(asBoolean)
@@ -104,16 +104,16 @@ trait BaseOperations extends BaseApi {
     })
 
   override def flushdb: Boolean =
-    send("FLUSHDB", false)(asBoolean)
+    send("FLUSHDB")(asBoolean)
 
   override def flushall: Boolean =
-    send("FLUSHALL", false)(asBoolean)
+    send("FLUSHALL")(asBoolean)
 
   override def move(key: Any, db: Int)(implicit format: Format): Boolean =
     send("MOVE", List(key, db))(asBoolean)
 
   override def quit: Boolean =
-    send("QUIT", false)(disconnect)
+    send("QUIT")(disconnect)
 
   override def auth(secret: Any)(implicit format: Format): Boolean =
     send("AUTH", List(secret))(asBoolean)
@@ -125,13 +125,13 @@ trait BaseOperations extends BaseApi {
     send("SCAN", cursor :: ((x: List[Any]) => if (pattern == "*") x else "match" :: pattern :: x) (if (count == 10) Nil else List("count", count)))(asPair)
 
   override def ping: Option[String] =
-    send("PING", false)(asString)
+    send("PING")(asString)
 
   override def watch(key: Any, keys: Any*)(implicit format: Format): Boolean =
     send("WATCH", key :: keys.toList)(asBoolean)
 
   override def unwatch(): Boolean =
-    send("UNWATCH", false)(asBoolean)
+    send("UNWATCH")(asBoolean)
 
   override def getConfig(key: Any = "*")(implicit format: Format): Option[Map[String, Option[String]]] =
     send("CONFIG", List("GET", key))(asList).map { ls =>

src/main/scala/com/redis/NodeOperations.scala

@@ -6,25 +6,25 @@ trait NodeOperations extends NodeApi {
   self: Redis =>
 
   override def save: Boolean =
-    send("SAVE", false)(asBoolean)
+    send("SAVE")(asBoolean)
 
   override def bgsave: Boolean =
-    send("BGSAVE", false)(asBoolean)
+    send("BGSAVE")(asBoolean)
 
   override def lastsave: Option[Long] =
-    send("LASTSAVE", false)(asLong)
+    send("LASTSAVE")(asLong)
 
   override def shutdown: Boolean =
-    send("SHUTDOWN", false)(asBoolean)
+    send("SHUTDOWN")(asBoolean)
 
   override def bgrewriteaof: Boolean =
-    send("BGREWRITEAOF", false)(asBoolean)
+    send("BGREWRITEAOF")(asBoolean)
 
   override def info: Option[String] =
-    send("INFO", false)(asBulk)
+    send("INFO")(asBulk)
 
   override def monitor: Boolean =
-    send("MONITOR", false)(asBoolean)
+    send("MONITOR")(asBoolean)
 
   override def slaveof(options: Any): Boolean = options match {
     case (h: String, p: Int) =>

src/main/scala/com/redis/PubSub.scala

@@ -77,7 +77,7 @@ trait PubSub extends PubOperations { self: Redis =>
   }
 
   def pUnsubscribe(): Unit = {
-    send("PUNSUBSCRIBE", false)(())
+    send("PUNSUBSCRIBE")(())
   }
 
   def pUnsubscribe(channel: String, channels: String*): Unit = {
@@ -98,7 +98,7 @@ trait PubSub extends PubOperations { self: Redis =>
   }
 
   def unsubscribe(): Unit = {
-    val r = send("UNSUBSCRIBE", false)(())
+    val r = send("UNSUBSCRIBE")(())
     pubSub = false
     r
   }

src/main/scala/com/redis/RedisClient.scala

@@ -26,19 +26,19 @@ object RedisClient {
     )
       .getOrElse(0)
   }
+
+  case class CommandToSend(command: String, args: Seq[Array[Byte]])
 }
 
 import RedisClient._
 abstract class Redis(batch: Mode) extends IO with Protocol {
   var handlers: Vector[(String, () => Any)] = Vector.empty
-  var commandBuffer: StringBuffer           = new StringBuffer
-  val crlf = "\r\n"
-
+  val commandBuffer = collection.mutable.ListBuffer.empty[CommandToSend]
 
   def send[A](command: String, args: Seq[Any])(result: => A)(implicit format: Format): A = try {
     if (batch == BATCH) {
       handlers :+= ((command, () => result))
-      commandBuffer.append((List(command) ++ args.toList).mkString(" ") ++ crlf)
+      commandBuffer += CommandToSend(command, args.map(format.apply))
       null.asInstanceOf[A] // hack
     } else {
       write(Commands.multiBulk(command.getBytes("UTF-8") +: (args map (format.apply))))
@@ -53,26 +53,36 @@ abstract class Redis(batch: Mode) extends IO with Protocol {
       else throw e
   }
 
-  def send[A](command: String, submissionMode: Boolean = false)(result: => A): A = try {
+  def send[A](command: String)(result: => A): A = try {
     if (batch == BATCH) {
-      if (!submissionMode) {
-        handlers :+= ((command, () => result))
-        commandBuffer.append(command ++ crlf)
-        null.asInstanceOf[A]
-      } else {
-        write(command.getBytes("UTF-8"))
-        result
-      }
+      handlers :+= ((command, () => result))
+      commandBuffer += CommandToSend(command, Seq.empty[Array[Byte]])
+      null.asInstanceOf[A]
     } else {
       write(Commands.multiBulk(List(command.getBytes("UTF-8"))))
       result
     }
   } catch {
     case e: RedisConnectionException =>
-      if (disconnect) send(command, submissionMode)(result)
+      if (disconnect) send(command)(result)
+      else throw e
+    case e: SocketException =>
+      if (disconnect) send(command)(result)
+      else throw e
+  }
+
+  def send[A](commands: List[CommandToSend])(result: => A): A = try {
+    val cs = commands.map { command =>
+      command.command.getBytes("UTF-8") +: command.args
+    }
+    write(Commands.multiMultiBulk(cs))
+    result
+  } catch {
+    case e: RedisConnectionException =>
+      if (disconnect) send(commands)(result)
       else throw e
     case e: SocketException =>
-      if (disconnect) send(command, submissionMode)(result)
+      if (disconnect) send(commands)(result)
       else throw e
   }
 
@@ -143,17 +153,17 @@ class RedisClient(override val host: String, override val port: Int,
    * @see https://redis.io/commands/multi
    */
   def pipeline(f: PipelineClient => Any): Option[List[Any]] = {
-    send("MULTI", false)(asString) // flush reply stream
+    send("MULTI")(asString) // flush reply stream
     try {
       val pipelineClient = new PipelineClient(this)
       try {
         f(pipelineClient)
       } catch {
         case e: Exception =>
-          send("DISCARD", false)(asString)
+          send("DISCARD")(asString)
           throw e
       }
-      send("EXEC", false)(asExec(pipelineClient.responseHandlers))
+      send("EXEC")(asExec(pipelineClient.responseHandlers))
     } catch {
       case e: RedisMultiExecException =>
         None
@@ -226,9 +236,9 @@ class RedisClient(override val host: String, override val port: Int,
     commands.foreach { command =>
       command()
     }
-    val r = send(commandBuffer.toString, true)(Some(handlers.map(_._2).map(_()).toList))
+    val r = send(commandBuffer.toList)(Some(handlers.map(_._2).map(_()).toList))
     handlers = Vector.empty
-    commandBuffer.setLength(0)
+    commandBuffer.clear()
     r
   }
 
@@ -248,7 +258,7 @@ class RedisClient(override val host: String, override val port: Int,
       receive(singleLineReply).map(Parse.parseDefault)
       null.asInstanceOf[A] // ugh... gotta find a better way
     }
-    override def send[A](command: String, submissionMode: Boolean = false)(result: => A): A = {
+    override def send[A](command: String)(result: => A): A = {
       write(Commands.multiBulk(List(command.getBytes("UTF-8"))))
       responseHandlers :+= (() => result)
       receive(singleLineReply).map(Parse.parseDefault)

src/main/scala/com/redis/RedisProtocol.scala

@@ -34,6 +34,18 @@ private [redis] object Commands {
     }
     b.result()
   }
+
+  def multiMultiBulk(commands: Seq[Seq[Array[Byte]]]): Array[Byte] = {
+    val no = commands.size
+    val b = new scala.collection.mutable.ArrayBuilder.ofByte
+    // b ++= "*%d".format(no).getBytes
+    // b ++= LS
+    commands.foreach { command =>
+      b ++= multiBulk(command)
+      b ++= LS
+    }
+    b.result()
+  }
 }
 
 import Commands._