[SW-1391] Switch to Scala formatter (#2002)

.scalafmt.conf

@@ -0,0 +1,30 @@
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You under the Apache License, Version 2.0
+# (the "License"); you may not use this file except in compliance with
+# the License.  You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+align = none
+align.openParenDefnSite = false
+align.openParenCallSite = false
+align.tokens = []
+optIn = {
+  configStyleArguments = false
+}
+danglingParentheses = false
+docstrings = ScalaDoc
+
+importSelectors = singleLine
+maxColumn = 120
+continuationIndent.extendSite = 2

apps/streaming/src/main/scala/ai/h2o/PipelineDemo.scala

@@ -1,19 +1,19 @@
 /*
-* Licensed to the Apache Software Foundation (ASF) under one or more
-* contributor license agreements.  See the NOTICE file distributed with
-* this work for additional information regarding copyright ownership.
-* The ASF licenses this file to You under the Apache License, Version 2.0
-* (the "License"); you may not use this file except in compliance with
-* the License.  You may obtain a copy of the License at
-*
-*    http://www.apache.org/licenses/LICENSE-2.0
-*
-* Unless required by applicable law or agreed to in writing, software
-* distributed under the License is distributed on an "AS IS" BASIS,
-* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-* See the License for the specific language governing permissions and
-* limitations under the License.
-*/
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 
 package ai.h2o.demo
 
@@ -42,13 +42,12 @@ object PipelineDemo {
 
     val lines = ssc.socketTextStream("localhost", port)
     lines.print() // useful to see some of the data stream for debugging
-    val events = lines.map(_.split(",")).map(
-      e=> RandomEvent(e(0), e(1).toDouble, e(2).toDouble)
-    )
+    val events = lines.map(_.split(",")).map(e => RandomEvent(e(0), e(1).toDouble, e(2).toDouble))
     var hf: H2OFrame = null
-    events.window(Seconds(300), Seconds(10)).foreachRDD(rdd =>
-      {
-        if (!rdd.isEmpty ) {
+    events
+      .window(Seconds(300), Seconds(10))
+      .foreachRDD(rdd => {
+        if (!rdd.isEmpty) {
           try {
             hf.delete()
           } catch { case e: Exception => println("Initialized frame") }
@@ -58,8 +57,7 @@ object PipelineDemo {
           // make sure your execution finishes within the batch cycle (the
           // second arg in the window)
         }
-      }
-    )
+      })
     ssc.start()
     ssc.awaitTermination()
   }

apps/streaming/src/main/scala/ai/h2o/RandomEvent.scala

@@ -1,28 +1,23 @@
 /*
-* Licensed to the Apache Software Foundation (ASF) under one or more
-* contributor license agreements.  See the NOTICE file distributed with
-* this work for additional information regarding copyright ownership.
-* The ASF licenses this file to You under the Apache License, Version 2.0
-* (the "License"); you may not use this file except in compliance with
-* the License.  You may obtain a copy of the License at
-*
-*    http://www.apache.org/licenses/LICENSE-2.0
-*
-* Unless required by applicable law or agreed to in writing, software
-* distributed under the License is distributed on an "AS IS" BASIS,
-* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-* See the License for the specific language governing permissions and
-* limitations under the License.
-*/
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 
 package ai.h2o
 
 /**
   * An example of event representation.
   */
-case class RandomEvent(
-                      datetime: String,
-                      value1: Double,
-                      value2: Double
-                      )
-
+case class RandomEvent(datetime: String, value1: Double, value2: Double)

benchmarks/src/main/scala/ai/h2o/sparkling/benchmarks/BenchmarkBase.scala

@@ -1,19 +1,19 @@
 /*
-* Licensed to the Apache Software Foundation (ASF) under one or more
-* contributor license agreements.  See the NOTICE file distributed with
-* this work for additional information regarding copyright ownership.
-* The ASF licenses this file to You under the Apache License, Version 2.0
-* (the "License"); you may not use this file except in compliance with
-* the License.  You may obtain a copy of the License at
-*
-*    http://www.apache.org/licenses/LICENSE-2.0
-*
-* Unless required by applicable law or agreed to in writing, software
-* distributed under the License is distributed on an "AS IS" BASIS,
-* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-* See the License for the specific language governing permissions and
-* limitations under the License.
-*/
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 
 package ai.h2o.sparkling.benchmarks
 
@@ -70,8 +70,7 @@ abstract class BenchmarkBase[TInput](context: BenchmarkContext) {
   }
 
   private def loadRegularDataFrame(): DataFrame = {
-    context.spark
-      .read
+    context.spark.read
       .option("header", "true")
       .option("inferSchema", "true")
       .csv(context.datasetDetails.url.get)
@@ -175,8 +174,8 @@ object AlgorithmBenchmarkBase {
 }
 
 case class AlgorithmBundle(
-                            swAlgorithm: H2OSupervisedAlgorithm[_ <: Model.Parameters],
-                            h2oAlgorithm: ModelBuilder[_, _ <: Model.Parameters, _]) {
+    swAlgorithm: H2OSupervisedAlgorithm[_ <: Model.Parameters],
+    h2oAlgorithm: ModelBuilder[_, _ <: Model.Parameters, _]) {
   def newInstance(): AlgorithmBundle = {
     val clonedSwAlgorithm = swAlgorithm.copy(ParamMap.empty)
     val clonedH2OParams = h2oAlgorithm._parms.clone()
@@ -190,14 +189,14 @@ case class AlgorithmBundle(
 case class Measurement(id: Int, name: String, value: Any)
 
 case class DatasetDetails(
-                           name: String,
-                           isVirtual: Boolean,
-                           labelCol: String,
-                           url: Option[String],
-                           nCols: Option[Int],
-                           nRows: Option[Int],
-                           nPartitions: Option[Int],
-                           minValue: Option[Int],
-                           maxValue: Option[Int])
+    name: String,
+    isVirtual: Boolean,
+    labelCol: String,
+    url: Option[String],
+    nCols: Option[Int],
+    nRows: Option[Int],
+    nPartitions: Option[Int],
+    minValue: Option[Int],
+    maxValue: Option[Int])
 
 case class BenchmarkContext(spark: SparkSession, hc: H2OContext, datasetDetails: DatasetDetails)

benchmarks/src/main/scala/ai/h2o/sparkling/benchmarks/DKVCleaner.scala

@@ -1,19 +1,19 @@
 /*
-* Licensed to the Apache Software Foundation (ASF) under one or more
-* contributor license agreements.  See the NOTICE file distributed with
-* this work for additional information regarding copyright ownership.
-* The ASF licenses this file to You under the Apache License, Version 2.0
-* (the "License"); you may not use this file except in compliance with
-* the License.  You may obtain a copy of the License at
-*
-*    http://www.apache.org/licenses/LICENSE-2.0
-*
-* Unless required by applicable law or agreed to in writing, software
-* distributed under the License is distributed on an "AS IS" BASIS,
-* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-* See the License for the specific language governing permissions and
-* limitations under the License.
-*/
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 
 package ai.h2o.sparkling.benchmarks
 

benchmarks/src/main/scala/ai/h2o/sparkling/benchmarks/DataFrameToH2OFrameConversionBenchmark.scala

@@ -1,19 +1,19 @@
 /*
-* Licensed to the Apache Software Foundation (ASF) under one or more
-* contributor license agreements.  See the NOTICE file distributed with
-* this work for additional information regarding copyright ownership.
-* The ASF licenses this file to You under the Apache License, Version 2.0
-* (the "License"); you may not use this file except in compliance with
-* the License.  You may obtain a copy of the License at
-*
-*    http://www.apache.org/licenses/LICENSE-2.0
-*
-* Unless required by applicable law or agreed to in writing, software
-* distributed under the License is distributed on an "AS IS" BASIS,
-* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-* See the License for the specific language governing permissions and
-* limitations under the License.
-*/
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 
 package ai.h2o.sparkling.benchmarks
 

benchmarks/src/main/scala/ai/h2o/sparkling/benchmarks/DummyDataFrameBenchmark.scala

@@ -1,27 +1,27 @@
 /*
-* Licensed to the Apache Software Foundation (ASF) under one or more
-* contributor license agreements.  See the NOTICE file distributed with
-* this work for additional information regarding copyright ownership.
-* The ASF licenses this file to You under the Apache License, Version 2.0
-* (the "License"); you may not use this file except in compliance with
-* the License.  You may obtain a copy of the License at
-*
-*    http://www.apache.org/licenses/LICENSE-2.0
-*
-* Unless required by applicable law or agreed to in writing, software
-* distributed under the License is distributed on an "AS IS" BASIS,
-* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-* See the License for the specific language governing permissions and
-* limitations under the License.
-*/
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 
 package ai.h2o.sparkling.benchmarks
 
 import org.apache.spark.sql.DataFrame
 
 /**
- * The purpose of this benchmark is to measure how much time is spent on deserialization from data frame cache.
- */
+  * The purpose of this benchmark is to measure how much time is spent on deserialization from data frame cache.
+  */
 class DummyDataFrameBenchmark(context: BenchmarkContext) extends BenchmarkBase[DataFrame](context) {
 
   override protected def initialize(): DataFrame = loadDataToDataFrame()

benchmarks/src/main/scala/ai/h2o/sparkling/benchmarks/H2OFrameToDataFrameConversionBenchmark.scala

@@ -1,19 +1,19 @@
 /*
-* Licensed to the Apache Software Foundation (ASF) under one or more
-* contributor license agreements.  See the NOTICE file distributed with
-* this work for additional information regarding copyright ownership.
-* The ASF licenses this file to You under the Apache License, Version 2.0
-* (the "License"); you may not use this file except in compliance with
-* the License.  You may obtain a copy of the License at
-*
-*    http://www.apache.org/licenses/LICENSE-2.0
-*
-* Unless required by applicable law or agreed to in writing, software
-* distributed under the License is distributed on an "AS IS" BASIS,
-* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-* See the License for the specific language governing permissions and
-* limitations under the License.
-*/
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 
 package ai.h2o.sparkling.benchmarks