Fail fast when multiple addons are run

modules/addonlib/src/main/scala/docspell/addons/AddonExecutor.scala

@@ -46,7 +46,12 @@ object AddonExecutor {
               in.cacheDir,
               in.addons
             )
-            rs <- ctx.traverse(c => runAddon(logger.withAddon(c), in.env)(c))
+            rs <-
+              if (cfg.failFast) ctx.foldLeftM(List.empty[AddonResult]) { (res, c) =>
+                if (res.headOption.exists(_.isFailure)) res.pure[F]
+                else runAddon(logger.withAddon(c), in.env)(c).map(r => r :: res)
+              }
+              else ctx.traverse(c => runAddon(logger.withAddon(c), in.env)(c))
             pure = ctx.foldl(true)((b, c) => b && c.meta.isPure)
           } yield AddonExecutionResult(rs, pure)
         }

modules/addonlib/src/main/scala/docspell/addons/AddonExecutorConfig.scala

@@ -15,7 +15,8 @@ case class AddonExecutorConfig(
     runTimeout: Duration,
     nspawn: NSpawn,
     nixRunner: NixConfig,
-    dockerRunner: DockerConfig
+    dockerRunner: DockerConfig,
+    failFast: Boolean
 )
 
 object AddonExecutorConfig {

modules/addonlib/src/main/scala/docspell/addons/AddonResult.scala

@@ -25,6 +25,7 @@ sealed trait AddonResult {
 }
 
 object AddonResult {
+  val emptySuccess: AddonResult = success(AddonOutput.empty)
 
   /** The addon was run successful, but decoding its stdout failed. */
   case class DecodingError(message: String) extends AddonResult {