feat(pace-183): allow the option to specify an absolute path (#221)

Author: trietsch

dbt/src/main/kotlin/com/getstrm/pace/dbt/Main.kt

@@ -3,21 +3,31 @@ package com.getstrm.pace.dbt
 import com.fasterxml.jackson.databind.ObjectMapper
 import java.io.File
 import java.io.FileNotFoundException
+import java.nio.file.Paths
 import kotlin.system.exitProcess
 
-fun main() {
+fun main(args: Array<String>) {
+    val basePath = if (args.isEmpty())  {
+        Paths.get("").toAbsolutePath().toString()
+    } else if (args.size == 1) {
+        args[0]
+    } else {
+        println("Either provide 0 arguments or an absolute path to the dbt project directory.")
+        exitProcess(1)
+    }
+
     System.setProperty("org.jooq.no-logo", "true")
     System.setProperty("org.jooq.no-tips", "true")
 
     // Note! Working dir when running this must be the root of the desired dbt project!
     try {
         val manifestJson =
-            File("target/manifest.json").readText().let { ObjectMapper().readTree(it) }
+            File("$basePath/target/manifest.json").readText().let { ObjectMapper().readTree(it) }
 
         val dataPolicies = ManifestParser.createDataPolicies(manifestJson)
         dataPolicies.forEach { (policy, sourceModel, violations) ->
             if (violations.isEmpty()) {
-                ModelWriter(policy, sourceModel).write()
+                ModelWriter(policy, sourceModel, basePath).write()
             } else {
                 println(
                     "Skipping policy for source model ${sourceModel.originalFilePath} due to violations: $violations"

dbt/src/main/kotlin/com/getstrm/pace/dbt/ModelWriter.kt

@@ -4,13 +4,13 @@ import build.buf.gen.getstrm.pace.api.entities.v1alpha.DataPolicy
 import java.io.File
 import org.jetbrains.annotations.VisibleForTesting
 
-class ModelWriter(private val policy: DataPolicy, private val sourceModel: DbtModel) {
+class ModelWriter(private val policy: DataPolicy, private val sourceModel: DbtModel, private val basePath: String) {
 
     fun write() {
         // Todo: take global transforms into account
         val viewGenerator = ViewGeneratorFactory.create(policy, sourceModel)
         viewGenerator.toSelectStatement(inlineParameters = true).forEach { (target, query) ->
-            val targetFilePath = targetFilePath(target)
+            val targetFilePath = "$basePath/${targetFilePath(target)}"
             val file = File(targetFilePath)
             val header = ModelHeaderRenderer(sourceModel, target).render()
             file.writeText("$header\n$query\n")