manage versions in root build.sbt and update script (#1013)

Author: mpollmeier

build.sbt

@@ -1,4 +1,8 @@
 name := "codepropertygraph"
+
+// parsed by project/Versions.scala, updated by updateDependencies.sh
+val overflowdbVersion = "1.19"
+
 inThisBuild(
   List(
     organization := "io.shiftleft",

domainClasses/build.sbt

@@ -1,6 +1,6 @@
 name := "codepropertygraph-domain-classes"
 
-libraryDependencies += "io.shiftleft" %% "overflowdb-traversal" % "1.19"
+libraryDependencies += "io.shiftleft" %% "overflowdb-traversal" % Versions.overflowdb
 dependsOn(Projects.schema)
 
 lazy val mergeSchemaTask = taskKey[File]("Merge schemas")

project/Utils.scala

@@ -1,8 +1,3 @@
-object Versions {
-  val scalatest  = "3.1.1"
-  val antlr = "4.7.2"
-}
-
 object GitLFSUtils {
   def isGitLFSEnabled(): Boolean = {
     import scala.sys.process._

project/Versions.scala

@@ -0,0 +1,21 @@
+/* reads version declarations from /build.sbt so that we can declare them in one place */
+object Versions {
+  val overflowdb = parseVersion("overflowdbVersion")
+  val scalatest  = "3.1.1"
+  val antlr = "4.7.2"
+
+  private def parseVersion(key: String): String = {
+    val versionRegexp = s""".*val $key[ ]+=[ ]?"(.*?)"""".r
+    val versions: List[String] = scala.io.Source
+      .fromFile("build.sbt")
+      .getLines
+      .filter(_.contains(s"val $key"))
+      .collect { case versionRegexp(version) => version }
+      .toList
+    assert(
+      versions.size == 1,
+      s"""unable to extract $key from build.sbt, expected exactly one line like `val $key= "0.0.0-SNAPSHOT"`.""")
+    versions.head
+  }
+
+}

updateDependencies.sh

@@ -0,0 +1,36 @@
+#!/usr/bin/env bash
+NON_INTERACTIVE_OPTION=$1
+DEPENDENCY=$2
+
+function update {
+  local NAME=$1
+  local REPO=$2
+
+  local HIGHEST_TAG=`git ls-remote --tags $REPO | awk -F"/" '{print $3}' | grep '^v[0-9]*\.[0-9]*' | grep -v {} | sort --version-sort | tail -n1`
+  # drop initial v from git tag
+  local VERSION=${HIGHEST_TAG:1}
+  local SEARCH="val ${NAME}Version\([ ]*\)= .*"
+  local REPLACE="val ${NAME}Version\1= \"$VERSION\""
+
+  if [ "$NON_INTERACTIVE_OPTION" == "--non-interactive" ]; then
+    echo "non-interactive mode, auto-updating the ${NAME} dependency"
+    sed -i "s/$SEARCH/$REPLACE/" build.sbt
+  else
+    echo "set version for $NAME to $VERSION? [Y/n]"
+    read ANSWER
+    if [ -z $ANSWER ] || [ "y" == $ANSWER ] || [ "Y" == $ANSWER ]; then
+      sed -i "s/$SEARCH/$REPLACE/" build.sbt
+    fi
+  fi
+}
+
+if [ "$DEPENDENCY" == "" ]; then
+    update overflowdb git@github.com:ShiftLeftSecurity/overflowdb.git
+else
+    DEPENDENCY="${DEPENDENCY#--only=}"
+    if [ "$DEPENDENCY" == "overflowdb" ]; then
+        update overflowdb git@github.com:ShiftLeftSecurity/overflowdb.git
+    else
+      echo "Unknown dependency: $DEPENDENCY. Aborting."
+    fi
+fi