Do not log thrown Mistake

build.gradle.kts

@@ -30,11 +30,12 @@ import Build_gradle.Subproject
 import io.spine.dependency.build.ErrorProne
 import io.spine.dependency.lib.Grpc
 import io.spine.dependency.lib.Guava
-import io.spine.dependency.test.JUnit
 import io.spine.dependency.lib.Kotlin
-import io.spine.dependency.local.Spine
 import io.spine.dependency.local.Logging
+import io.spine.dependency.local.Spine
+import io.spine.dependency.local.TestLib
 import io.spine.dependency.local.Validation
+import io.spine.dependency.test.JUnit
 import io.spine.gradle.VersionWriter
 import io.spine.gradle.checkstyle.CheckStyleConfig
 import io.spine.gradle.github.pages.updateGitHubPages
@@ -251,7 +252,7 @@ fun Subproject.defineDependencies() {
         implementation(Validation.runtime)
 
         testImplementation(JUnit.runner)
-        testImplementation(Spine.testlib)
+        testImplementation(TestLib.lib)
     }
 }
 

buildSrc/src/main/kotlin/io/spine/dependency/local/Base.kt

@@ -33,8 +33,8 @@ package io.spine.dependency.local
  */
 @Suppress("ConstPropertyName")
 object Base {
-    const val version = "2.0.0-SNAPSHOT.231"
-    const val versionForBuildScript = "2.0.0-SNAPSHOT.231"
+    const val version = "2.0.0-SNAPSHOT.232"
+    const val versionForBuildScript = "2.0.0-SNAPSHOT.232"
     const val group = Spine.group
     const val artifact = "spine-base"
     const val lib = "$group:$artifact:$version"

dependencies.md

@@ -1,6 +1,6 @@
 
 
-# Dependencies of `io.spine:spine-client:2.0.0-SNAPSHOT.190`
+# Dependencies of `io.spine:spine-client:2.0.0-SNAPSHOT.191`
 
 ## Runtime
 1.  **Group** : com.google.android. **Name** : annotations. **Version** : 4.1.1.4.
@@ -846,12 +846,12 @@
 
 The dependencies distributed under several licenses, are used according their commercial-use-friendly license.
 
-This report was generated on **Fri Dec 13 20:09:56 WET 2024** using [Gradle-License-Report plugin](https://github.com/jk1/Gradle-License-Report) by Evgeny Naumenko, licensed under [Apache 2.0 License](https://github.com/jk1/Gradle-License-Report/blob/master/LICENSE).
+This report was generated on **Sun Dec 15 13:05:33 WET 2024** using [Gradle-License-Report plugin](https://github.com/jk1/Gradle-License-Report) by Evgeny Naumenko, licensed under [Apache 2.0 License](https://github.com/jk1/Gradle-License-Report/blob/master/LICENSE).
 
 
 
 
-# Dependencies of `io.spine:spine-core:2.0.0-SNAPSHOT.190`
+# Dependencies of `io.spine:spine-core:2.0.0-SNAPSHOT.191`
 
 ## Runtime
 1.  **Group** : com.google.code.findbugs. **Name** : jsr305. **Version** : 3.0.2.
@@ -1649,12 +1649,12 @@ This report was generated on **Fri Dec 13 20:09:56 WET 2024** using [Gradle-Lice
 
 The dependencies distributed under several licenses, are used according their commercial-use-friendly license.
 
-This report was generated on **Fri Dec 13 20:09:56 WET 2024** using [Gradle-License-Report plugin](https://github.com/jk1/Gradle-License-Report) by Evgeny Naumenko, licensed under [Apache 2.0 License](https://github.com/jk1/Gradle-License-Report/blob/master/LICENSE).
+This report was generated on **Sun Dec 15 13:05:33 WET 2024** using [Gradle-License-Report plugin](https://github.com/jk1/Gradle-License-Report) by Evgeny Naumenko, licensed under [Apache 2.0 License](https://github.com/jk1/Gradle-License-Report/blob/master/LICENSE).
 
 
 
 
-# Dependencies of `io.spine:spine-server:2.0.0-SNAPSHOT.190`
+# Dependencies of `io.spine:spine-server:2.0.0-SNAPSHOT.191`
 
 ## Runtime
 1.  **Group** : com.google.android. **Name** : annotations. **Version** : 4.1.1.4.
@@ -2508,12 +2508,12 @@ This report was generated on **Fri Dec 13 20:09:56 WET 2024** using [Gradle-Lice
 
 The dependencies distributed under several licenses, are used according their commercial-use-friendly license.
 
-This report was generated on **Fri Dec 13 20:09:57 WET 2024** using [Gradle-License-Report plugin](https://github.com/jk1/Gradle-License-Report) by Evgeny Naumenko, licensed under [Apache 2.0 License](https://github.com/jk1/Gradle-License-Report/blob/master/LICENSE).
+This report was generated on **Sun Dec 15 13:05:34 WET 2024** using [Gradle-License-Report plugin](https://github.com/jk1/Gradle-License-Report) by Evgeny Naumenko, licensed under [Apache 2.0 License](https://github.com/jk1/Gradle-License-Report/blob/master/LICENSE).
 
 
 
 
-# Dependencies of `io.spine.tools:spine-testutil-client:2.0.0-SNAPSHOT.190`
+# Dependencies of `io.spine.tools:spine-testutil-client:2.0.0-SNAPSHOT.191`
 
 ## Runtime
 1.  **Group** : com.google.android. **Name** : annotations. **Version** : 4.1.1.4.
@@ -3482,12 +3482,12 @@ This report was generated on **Fri Dec 13 20:09:57 WET 2024** using [Gradle-Lice
 
 The dependencies distributed under several licenses, are used according their commercial-use-friendly license.
 
-This report was generated on **Fri Dec 13 20:09:57 WET 2024** using [Gradle-License-Report plugin](https://github.com/jk1/Gradle-License-Report) by Evgeny Naumenko, licensed under [Apache 2.0 License](https://github.com/jk1/Gradle-License-Report/blob/master/LICENSE).
+This report was generated on **Sun Dec 15 13:05:34 WET 2024** using [Gradle-License-Report plugin](https://github.com/jk1/Gradle-License-Report) by Evgeny Naumenko, licensed under [Apache 2.0 License](https://github.com/jk1/Gradle-License-Report/blob/master/LICENSE).
 
 
 
 
-# Dependencies of `io.spine.tools:spine-testutil-core:2.0.0-SNAPSHOT.190`
+# Dependencies of `io.spine.tools:spine-testutil-core:2.0.0-SNAPSHOT.191`
 
 ## Runtime
 1.  **Group** : com.google.android. **Name** : annotations. **Version** : 4.1.1.4.
@@ -4456,12 +4456,12 @@ This report was generated on **Fri Dec 13 20:09:57 WET 2024** using [Gradle-Lice
 
 The dependencies distributed under several licenses, are used according their commercial-use-friendly license.
 
-This report was generated on **Fri Dec 13 20:09:58 WET 2024** using [Gradle-License-Report plugin](https://github.com/jk1/Gradle-License-Report) by Evgeny Naumenko, licensed under [Apache 2.0 License](https://github.com/jk1/Gradle-License-Report/blob/master/LICENSE).
+This report was generated on **Sun Dec 15 13:05:35 WET 2024** using [Gradle-License-Report plugin](https://github.com/jk1/Gradle-License-Report) by Evgeny Naumenko, licensed under [Apache 2.0 License](https://github.com/jk1/Gradle-License-Report/blob/master/LICENSE).
 
 
 
 
-# Dependencies of `io.spine.tools:spine-testutil-server:2.0.0-SNAPSHOT.190`
+# Dependencies of `io.spine.tools:spine-testutil-server:2.0.0-SNAPSHOT.191`
 
 ## Runtime
 1.  **Group** : com.google.android. **Name** : annotations. **Version** : 4.1.1.4.
@@ -5478,4 +5478,4 @@ This report was generated on **Fri Dec 13 20:09:58 WET 2024** using [Gradle-Lice
 
 The dependencies distributed under several licenses, are used according their commercial-use-friendly license.
 
-This report was generated on **Fri Dec 13 20:09:58 WET 2024** using [Gradle-License-Report plugin](https://github.com/jk1/Gradle-License-Report) by Evgeny Naumenko, licensed under [Apache 2.0 License](https://github.com/jk1/Gradle-License-Report/blob/master/LICENSE).
+This report was generated on **Sun Dec 15 13:05:35 WET 2024** using [Gradle-License-Report plugin](https://github.com/jk1/Gradle-License-Report) by Evgeny Naumenko, licensed under [Apache 2.0 License](https://github.com/jk1/Gradle-License-Report/blob/master/LICENSE).

pom.xml

@@ -10,7 +10,7 @@ all modules and does not describe the project structure per-subproject.
  -->
 <groupId>io.spine</groupId>
 <artifactId>spine-core-java</artifactId>
-<version>2.0.0-SNAPSHOT.190</version>
+<version>2.0.0-SNAPSHOT.191</version>
 
 <inceptionYear>2015</inceptionYear>
 
@@ -68,7 +68,7 @@ all modules and does not describe the project structure per-subproject.
   <dependency>
     <groupId>io.spine</groupId>
     <artifactId>spine-base</artifactId>
-    <version>2.0.0-SNAPSHOT.231</version>
+    <version>2.0.0-SNAPSHOT.232</version>
     <scope>compile</scope>
   </dependency>
   <dependency>

server/src/main/java/io/spine/server/bus/Bus.java

@@ -1,11 +1,11 @@
 /*
- * Copyright 2023, TeamDev. All rights reserved.
+ * Copyright 2024, TeamDev. All rights reserved.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
- * http://www.apache.org/licenses/LICENSE-2.0
+ * https://www.apache.org/licenses/LICENSE-2.0
  *
  * Redistribution and use in source and/or binary forms, with or without
  * modification, must retain the above copyright notice and the following
@@ -32,6 +32,7 @@
 import com.google.protobuf.Message;
 import io.grpc.stub.StreamObserver;
 import io.spine.annotation.Internal;
+import io.spine.base.Mistake;
 import io.spine.core.Ack;
 import io.spine.core.Signal;
 import io.spine.core.SignalId;
@@ -348,13 +349,21 @@ private Optional<Ack> filter(E message) {
      *
      * <p>This method assumes that the given message has passed the filtering.
      *
-     * @see #post(Signal, StreamObserver) for the public API
+     * @see #post(Signal, StreamObserver) the public API for posting
      */
     protected abstract void dispatch(E envelope);
 
     /**
      * Posts each of the given envelopes into the bus and notifies the given observer.
      *
+     * <p>If {@link #dispatch(SignalEnvelope) dispatching} throws a {@link Mistake} it is rethrown.
+     * Other types of exceptions are logged and then rethrown.
+     *
+     * <p>We treat {@link Mistake}s differently and want to void much of console output
+     * for this special case of exceptions.
+     * Please see {@link io.spine.server.model.AbstractReceptor#invoke(Object, MessageEnvelope)}
+     * for more details on special treatment of {@link Mistake} during dispatching.
+     *
      * @param envelopes
      *         the envelopes to post
      * @param observer
@@ -370,6 +379,8 @@ private void doPost(Iterable<E> envelopes, StreamObserver<Ack> observer) {
             onDispatchingStarted(signalId);
             try {
                 dispatch(envelope);
+            } catch (Mistake m) {
+                throw m;
             } catch (Throwable t) {
                 logger().atError().withCause(t).log(() -> format(
                         "Unable to dispatch `%s` with ID `%s`.",

server/src/main/java/io/spine/server/model/AbstractReceptor.java

@@ -30,6 +30,7 @@
 import com.google.errorprone.annotations.Immutable;
 import com.google.errorprone.annotations.OverridingMethodsMustInvokeSuper;
 import com.google.protobuf.Message;
+import io.spine.base.Mistake;
 import io.spine.base.RejectionThrowable;
 import io.spine.core.Signal;
 import io.spine.server.dispatch.DispatchOutcome;
@@ -272,8 +273,8 @@ private static ImmutableSet<Attribute<?>> discoverAttributes(Method method) {
     /**
      * Feeds the given {@code envelope} to the given {@code target} and returns the outcome.
      *
-     * <p>If the target method throws {@link java.lang.Error} dispatching terminates with
-     * rethrowing the error.
+     * <p>If the target method throws {@link Mistake}, dispatching terminates with
+     * rethrowing it.
      *
      * <p>Other types of exceptions are converted to {@link io.spine.base.Error} and returned
      * {@link DispatchOutcome.Builder#setError inside} the {@link DispatchOutcome}.
@@ -285,8 +286,8 @@ private static ImmutableSet<Attribute<?>> discoverAttributes(Method method) {
      */
     @SuppressWarnings({
             "ChainOfInstanceofChecks" /* We need to separate exceptions. */,
-            "ThrowInsideCatchBlockWhichIgnoresCaughtException", "ProhibitedExceptionThrown"
-            /* Rethrowing `Error`. See Javadoc. */
+            "ThrowInsideCatchBlockWhichIgnoresCaughtException",
+            /* Rethrowing `Mistake`. See Javadoc. */
     })
     @Override
     public DispatchOutcome invoke(T target, E envelope) {
@@ -312,8 +313,8 @@ public DispatchOutcome invoke(T target, E envelope) {
         } catch (InvocationTargetException e) {
             var cause = e.getCause();
             checkNotNull(cause);
-            if (cause instanceof Error) {
-                throw (Error) cause;
+            if (cause instanceof Mistake) {
+                throw (Mistake) cause;
             } else if (cause instanceof RejectionThrowable) {
                 var success = asRejection(target, envelope, (RejectionThrowable) cause);
                 outcome.setSuccess(success);

server/src/test/kotlin/io/spine/server/model/AbstractReceptorSpec.kt

@@ -32,6 +32,7 @@ import io.kotest.matchers.shouldBe
 import io.kotest.matchers.shouldNotBe
 import io.spine.base.EventMessage
 import io.spine.base.Identifier
+import io.spine.base.Mistake
 import io.spine.core.Event
 import io.spine.core.Subscribe
 import io.spine.protobuf.AnyPacker
@@ -216,17 +217,17 @@ internal class AbstractReceptorSpec {
     }
 
     @Nested inner class
-    `propagate instances of 'Error'` {
+    `propagate instances of 'Mistake'` {
 
-        private val signature = SubscriberSignature();
+        private val signature = SubscriberSignature()
 
         @Test
-        fun `if a target throws 'java_lang_Error'`() {
-            val receptor = signature.classify(ErrorThrowingHandler.method("throwingError"))
+        fun `if a target throws 'Mistake'`() {
+            val receptor = signature.classify(MistakenHandler.method("throwingMistake"))
             receptor.shouldBePresent()
             val envelope = envelope(projectCreated())
-            assertThrows<Error> {
-                receptor.get().invoke(ErrorThrowingHandler(), envelope)
+            assertThrows<Mistake> {
+                receptor.get().invoke(MistakenHandler(), envelope)
             }
         }
 
@@ -238,21 +239,24 @@ internal class AbstractReceptorSpec {
 /**
  * A subscriber which throws [java.lang.Error] and [kotlin.Error] in the receptors.
  */
-private class ErrorThrowingHandler : EventSubscriber {
+private class MistakenHandler : EventSubscriber {
 
     companion object {
         fun method(name: String): Method {
-            return ModelTests.getMethod(ErrorThrowingHandler::class.java, name)
+            return ModelTests.getMethod(MistakenHandler::class.java, name)
         }
     }
 
     @Subscribe
     @Suppress("TooGenericExceptionThrown", "UNUSED_PARAMETER")
-    fun throwingError(e: RefProjectCreated) {
-        throw Error("Throwing `java.lang.Error`.")
+    fun throwingMistake(e: RefProjectCreated) {
+        throw StubMistake()
     }
 }
 
+@Suppress("serial") // No need for the tests.
+private class StubMistake: Mistake()
+
 private fun envelope(eventMessage: EventMessage): EventEnvelope {
     val factory = TestEventFactory.newInstance(AbstractReceptorSpec::class.java)
     val event = factory.createEvent(eventMessage)

version.gradle.kts

@@ -29,4 +29,4 @@
  *
  * For versions of Spine-based dependencies, please see [io.spine.dependency.local.Spine].
  */
-val versionToPublish: String by extra("2.0.0-SNAPSHOT.190")
+val versionToPublish: String by extra("2.0.0-SNAPSHOT.191")