Fix #1314 - Introduce LifecycleEvents to expose events constants to clients

impl/core/src/main/java/io/serverlessworkflow/impl/LifecycleEvents.java

@@ -0,0 +1,69 @@
+/*
+ * Copyright 2020-Present The Serverless Workflow Specification Authors
+ *
+ * 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
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package io.serverlessworkflow.impl;
+
+/**
+ * @see <a
+ *     href="https://github.com/serverlessworkflow/specification/blob/main/dsl.md#lifecycle-events">Serverless
+ *     Workflow Specification :: DSL :: LifecycleEvents</a>
+ */
+public final class LifecycleEvents {
+
+  private LifecycleEvents() {}
+
+  /** Notifies about the start of a task. */
+  public static final String TASK_STARTED = "io.serverlessworkflow.task.started.v1";
+
+  /** Notifies about the completion of a task's execution. */
+  public static final String TASK_COMPLETED = "io.serverlessworkflow.task.completed.v1";
+
+  /** Notifies about suspending a task's execution. */
+  public static final String TASK_SUSPENDED = "io.serverlessworkflow.task.suspended.v1";
+
+  /** Notifies about resuming a task's execution. */
+  public static final String TASK_RESUMED = "io.serverlessworkflow.task.resumed.v1";
+
+  /** Notifies about a task being faulted. */
+  public static final String TASK_FAULTED = "io.serverlessworkflow.task.faulted.v1";
+
+  /** Notifies about the cancellation of a task's execution. */
+  public static final String TASK_CANCELLED = "io.serverlessworkflow.task.cancelled.v1";
+
+  /** Notifies about retrying a task's execution. */
+  public static final String TASK_RETRIED = "io.serverlessworkflow.task.retried.v1";
+
+  /** Notifies about the start of a workflow. */
+  public static final String WORKFLOW_STARTED = "io.serverlessworkflow.workflow.started.v1";
+
+  /** Notifies about the completion of a workflow execution. */
+  public static final String WORKFLOW_COMPLETED = "io.serverlessworkflow.workflow.completed.v1";
+
+  /** Notifies about suspending a workflow execution. */
+  public static final String WORKFLOW_SUSPENDED = "io.serverlessworkflow.workflow.suspended.v1";
+
+  /** Notifies about resuming a workflow execution. */
+  public static final String WORKFLOW_RESUMED = "io.serverlessworkflow.workflow.resumed.v1";
+
+  /** Notifies about a workflow being faulted. */
+  public static final String WORKFLOW_FAULTED = "io.serverlessworkflow.workflow.faulted.v1";
+
+  /** Notifies about the cancellation of a workflow execution. */
+  public static final String WORKFLOW_CANCELLED = "io.serverlessworkflow.workflow.cancelled.v1";
+
+  /** Notifies about the change of a workflow's status phase. */
+  public static final String WORKFLOW_STATUS_CHANGED =
+      "io.serverlessworkflow.workflow.status-changed.v1";
+}

impl/core/src/main/java/io/serverlessworkflow/impl/lifecycle/ce/AbstractLifeCyclePublisher.java

@@ -15,6 +15,20 @@
  */
 package io.serverlessworkflow.impl.lifecycle.ce;
 
+import static io.serverlessworkflow.impl.LifecycleEvents.TASK_CANCELLED;
+import static io.serverlessworkflow.impl.LifecycleEvents.TASK_COMPLETED;
+import static io.serverlessworkflow.impl.LifecycleEvents.TASK_FAULTED;
+import static io.serverlessworkflow.impl.LifecycleEvents.TASK_RESUMED;
+import static io.serverlessworkflow.impl.LifecycleEvents.TASK_RETRIED;
+import static io.serverlessworkflow.impl.LifecycleEvents.TASK_STARTED;
+import static io.serverlessworkflow.impl.LifecycleEvents.TASK_SUSPENDED;
+import static io.serverlessworkflow.impl.LifecycleEvents.WORKFLOW_CANCELLED;
+import static io.serverlessworkflow.impl.LifecycleEvents.WORKFLOW_COMPLETED;
+import static io.serverlessworkflow.impl.LifecycleEvents.WORKFLOW_FAULTED;
+import static io.serverlessworkflow.impl.LifecycleEvents.WORKFLOW_RESUMED;
+import static io.serverlessworkflow.impl.LifecycleEvents.WORKFLOW_STARTED;
+import static io.serverlessworkflow.impl.LifecycleEvents.WORKFLOW_STATUS_CHANGED;
+import static io.serverlessworkflow.impl.LifecycleEvents.WORKFLOW_SUSPENDED;
 import static io.serverlessworkflow.impl.WorkflowError.error;
 import static io.serverlessworkflow.impl.lifecycle.ce.WorkflowDefinitionCEData.ref;
 
@@ -50,23 +64,6 @@
 
 public abstract class AbstractLifeCyclePublisher implements WorkflowExecutionListener {
 
-  private static final String TASK_STARTED = "io.serverlessworkflow.task.started.v1";
-  private static final String TASK_COMPLETED = "io.serverlessworkflow.task.completed.v1";
-  private static final String TASK_SUSPENDED = "io.serverlessworkflow.task.suspended.v1";
-  private static final String TASK_RESUMED = "io.serverlessworkflow.task.resumed.v1";
-  private static final String TASK_FAULTED = "io.serverlessworkflow.task.faulted.v1";
-  private static final String TASK_CANCELLED = "io.serverlessworkflow.task.cancelled.v1";
-  private static final String TASK_RETRIED = "io.serverlessworkflow.task.retried.v1";
-
-  private static final String WORKFLOW_STARTED = "io.serverlessworkflow.workflow.started.v1";
-  private static final String WORKFLOW_COMPLETED = "io.serverlessworkflow.workflow.completed.v1";
-  private static final String WORKFLOW_SUSPENDED = "io.serverlessworkflow.workflow.suspended.v1";
-  private static final String WORKFLOW_RESUMED = "io.serverlessworkflow.workflow.resumed.v1";
-  private static final String WORKFLOW_FAULTED = "io.serverlessworkflow.workflow.faulted.v1";
-  private static final String WORKFLOW_CANCELLED = "io.serverlessworkflow.workflow.cancelled.v1";
-  private static final String WORKFLOW_STATUS_CHANGED =
-      "io.serverlessworkflow.workflow.status-changed.v1";
-
   public static Collection<String> getLifeCycleTypes() {
     return Set.of(
         TASK_STARTED,