1 files changed, 85 insertions, 0 deletions
diff --git a/src/main/scala/xyz.driver.sbt/ServicePlugin.scala b/src/main/scala/xyz.driver.sbt/ServicePlugin.scala
new file mode 100644
index 0000000..82e20de
--- /dev/null
+++ b/src/main/scala/xyz.driver.sbt/ServicePlugin.scala
@@ -0,0 +1,85 @@
+package xyz.driver.sbt
+
+import com.typesafe.sbt.GitPlugin.autoImport._
+import com.typesafe.sbt.SbtNativePackager.Universal
+import com.typesafe.sbt.packager.Keys._
+import com.typesafe.sbt.packager.archetypes.JavaAppPackaging
+import com.typesafe.sbt.packager.docker.DockerPlugin.autoImport.Docker
+import com.typesafe.sbt.packager.docker.{Cmd, DockerPlugin}
+import java.time.Instant
+import sbt.Keys._
+import sbt.{Def, _}
+import sbtbuildinfo.BuildInfoPlugin
+import sbtbuildinfo.BuildInfoPlugin.autoImport._
+
+/** Common settings to a service. */
+object ServicePlugin extends AutoPlugin {
+
+  override def requires = BuildInfoPlugin && DockerPlugin && JavaAppPackaging
+
+  object autoImport {
+    val customCommands = taskKey[List[String]]("Additional commands that are run as part of docker packaging.")
+  }
+  import autoImport._
+
+  lazy val buildInfoSettings = Seq(
+    buildInfoKeys := Seq[BuildInfoKey](name, version, scalaVersion, sbtVersion, git.gitHeadCommit),
+    buildInfoPackage := organization.value,
+    buildInfoOptions += BuildInfoOption.BuildTime
+  )
+
+  lazy val dockerSettings = Seq(
+    name in Docker := name.value,
+    // Settings reference http://www.scala-sbt.org/sbt-native-packager/formats/docker.html
+    maintainer in Docker := "Driver Inc. <info@driver.xyz>",
+    aggregate in Docker := true, // include subprojects,
+    dockerRepository := Some("gcr.io/driverinc-sandbox"),
+    dockerUpdateLatest := true, // automatically update the latest tag
+    dockerBaseImage := "openjdk:11",
+    dockerLabels := Map(
+      "build.timestamp"                           -> Instant.now().toString
+    ) ++ git.gitHeadCommit.value.map("git.commit" -> _),
+    customCommands := Nil,
+    dockerCommands := dockerCommands.value.flatMap { // @see http://blog.codacy.com/2015/07/16/dockerizing-scala/
+      case cmd @ Cmd("FROM", _) => cmd :: customCommands.value.map(customCommand => Cmd("RUN", customCommand))
+      case other                => List(other)
+    },
+    bashScriptExtraDefines += {
+      s"""|if [[ -f /etc/${name.value}/ssl/issuing_ca ]]; then
+          |  keytool -import \
+          |    -alias driverincInternal \
+          |    -cacerts \
+          |    -file /etc/${name.value}/ssl/issuing_ca \
+          |    -storepass changeit -noprompt \
+          |  || exit 1
+          |else
+          |  echo "No truststore customization." >&2
+          |fi
+          |""".stripMargin
+    },
+    javaOptions in Universal ++= Seq(
+      // -J params will be added as jvm parameters
+
+      // Leave some space for overhead, such as running a debug shell in a
+      // container under heavy load. This may need to be tweaked if heavy use of
+      // off-heap memory is made.
+      "-J-XX:MaxRAMPercentage=90"
+    )
+  )
+
+  override def projectSettings: Seq[Def.Setting[_]] =
+    LibraryPlugin.repositorySettings ++ buildInfoSettings ++ dockerSettings ++ Seq(
+      organization := "xyz.driver",
+      crossScalaVersions := List("2.12.6"),
+      scalaVersion := crossScalaVersions.value.last,
+      publish := {
+        streams.value.log
+          .warn(s"Project ${name.value} is a service and will therefore not be published to an artifactory.")
+      }
+    )
+
+  override def buildSettings: Seq[Def.Setting[_]] =
+    addCommandAlias("start", "reStart") ++
+      addCommandAlias("stop", "reStop")
+
+}