Initial commit

common/build.gradle

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+dependencies {
+    compile group: "org.slf4j", name: "slf4j-api", version: "1.7.25"
+    compile group: "ch.qos.logback", name: "logback-classic", version: "1.2.3"
+    compile group: "ch.qos.logback", name: "logback-core", version: "1.2.3"
+}

common/src/main/scala/com/lbs/common/Implicits.scala

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+/**
+ * MIT License
+ *
+ * Copyright (c) 2018 Yevhen Zadyra
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+package com.lbs.common
+
+import java.util.Optional
+
+import scala.language.implicitConversions
+
+object Implicits {
+  implicit def optionalToOption[T](optional: Optional[T]): Option[T] = {
+    Option(optional.orElse(null.asInstanceOf[T]))
+  }
+
+  implicit def optionToOptional[T](option: Option[T]): Optional[T] = {
+    Optional.of(option.getOrElse(null.asInstanceOf[T]))
+  }
+}

common/src/main/scala/com/lbs/common/Logger.scala

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+/**
+ * MIT License
+ *
+ * Copyright (c) 2018 Yevhen Zadyra
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+package com.lbs.common
+
+import org.slf4j
+import org.slf4j.LoggerFactory
+
+trait Logger {
+  private val log: slf4j.Logger = LoggerFactory.getLogger(this.getClass)
+
+  protected val LOG = new LoggerWrapper
+
+  class LoggerWrapper {
+    def debug(msg: => String): Unit = {
+      if (log.isDebugEnabled)
+        log.debug(msg)
+    }
+
+    def warn(msg: => String): Unit = {
+      if (log.isWarnEnabled)
+        log.warn(msg)
+    }
+
+    def warn(msg: => String, throwable: Throwable): Unit = {
+      if (log.isWarnEnabled)
+        log.warn(msg, throwable)
+    }
+
+    def error(msg: => String): Unit = {
+      if (log.isErrorEnabled)
+        log.error(msg)
+    }
+
+    def error(msg: => String, throwable: Throwable): Unit = {
+      if (log.isErrorEnabled)
+        log.error(msg, throwable)
+    }
+
+    def info(msg: => String): Unit = {
+      if (log.isInfoEnabled)
+        log.info(msg)
+    }
+  }
+
+}

common/src/main/scala/com/lbs/common/ModelConverters.scala

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+/**
+ * MIT License
+ *
+ * Copyright (c) 2018 Yevhen Zadyra
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+package com.lbs.common
+
+import scala.collection.generic.CanBuildFrom
+import scala.language.{higherKinds, implicitConversions}
+
+trait ModelConverters {
+
+  trait CollectionConverter[-In, Out] {
+    def convert[Z <: In, Col[X] <: Iterable[X]](col: Col[Z])(implicit bf: CanBuildFrom[Col[Z], Out, Col[Out]]): Col[Out]
+  }
+
+  trait ObjectConverter[-In, Out] {
+    def convert[Z <: In](any: Z): Out
+  }
+
+  implicit class CollectionOps[From, Col[X] <: Iterable[X]](col: Col[From]) {
+    def mapTo[To](implicit converter: CollectionConverter[From, To], bf: CanBuildFrom[Col[From], To, Col[To]]): Col[To] = converter.convert(col)
+  }
+
+  implicit class ObjectOps[From](anyRef: From) {
+    def mapTo[To](implicit converter: ObjectConverter[From, To]): To = converter.convert(anyRef)
+  }
+
+}

common/src/main/scala/com/lbs/common/ParametrizedLock.scala

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+/**
+ * MIT License
+ *
+ * Copyright (c) 2018 Yevhen Zadyra
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+package com.lbs.common
+
+import java.util.concurrent.ConcurrentHashMap
+
+class ParametrizedLock[K] {
+  private val locks = new ConcurrentHashMap[K, AnyRef]
+
+  def obtainLock(key: K): AnyRef = locks.computeIfAbsent(key, k => new AnyRef)
+}

common/src/main/scala/com/lbs/common/Scheduler.scala

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+/**
+ * MIT License
+ *
+ * Copyright (c) 2018 Yevhen Zadyra
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+package com.lbs.common
+
+import java.util.concurrent.{Executors, ScheduledFuture}
+
+import scala.concurrent.duration.FiniteDuration
+
+class Scheduler(poolSize: Int) {
+  private val scheduledThreadPool = Executors.newScheduledThreadPool(poolSize)
+
+  def schedule(fn: => Unit, period: FiniteDuration): ScheduledFuture[_] = {
+    scheduledThreadPool.scheduleAtFixedRate(() => fn, period.length, period.length, period.unit)
+  }
+
+  def schedule(fn: => Unit, delay: FiniteDuration, period: FiniteDuration): ScheduledFuture[_] = {
+    require(delay.unit == period.unit, s"Delay units must be the same as for period ${period.unit}")
+    scheduledThreadPool.scheduleAtFixedRate(() => fn, delay.length, period.length, period.unit)
+  }
+}