chore: New task execution task id test

daprdocs/content/en/java-sdk-docs/java-workflow/java-workflow-howto.md

@@ -6,7 +6,7 @@ weight: 20000
 description: How to get up and running with workflows using the Dapr Java SDK
 ---
 
-Let’s create a Dapr workflow and invoke it using the console. With the [provided workflow example](https://github.com/dapr/java-sdk/tree/master/examples/src/main/java/io/dapr/examples/workflows), you will:
+Let's create a Dapr workflow and invoke it using the console. With the [provided workflow example](https://github.com/dapr/java-sdk/tree/master/examples/src/main/java/io/dapr/examples/workflows), you will:
 
 - Execute the workflow instance using the [Java workflow worker](https://github.com/dapr/java-sdk/blob/master/examples/src/main/java/io/dapr/examples/workflows/DemoWorkflowWorker.java)
 - Utilize the Java workflow client and API calls to [start and terminate workflow instances](https://github.com/dapr/java-sdk/blob/master/examples/src/main/java/io/dapr/examples/workflows/DemoWorkflowClient.java)
@@ -85,11 +85,10 @@ You're up and running! Both Dapr and your app logs will appear here.
 == APP == INFO: Durable Task worker is connecting to sidecar at 127.0.0.1:50001.
 ```
 
-## Run the `DemoWorkflowClient
+## Run the `DemoWorkflowClient`
 
 The `DemoWorkflowClient` starts instances of workflows that have been registered with Dapr.
 
-
 ```java
 public class DemoWorkflowClient {
 
@@ -246,4 +245,40 @@ Exiting DemoWorkflowClient.
 
 ## Next steps
 - [Learn more about Dapr workflow]({{< ref workflow-overview.md >}})
-- [Workflow API reference]({{< ref workflow_api.md >}})
+- [Workflow API reference]({{< ref workflow_api.md >}})
+
+## Advanced features
+
+### Task Execution Keys
+
+Task execution keys are unique identifiers generated by the durabletask-java library. They are stored in the `WorkflowActivityContext` and can be used to track and manage the execution of workflow activities. They are particularly useful for:
+
+1. **Idempotency**: Ensuring activities are not executed multiple times for the same task
+2. **State Management**: Tracking the state of activity execution
+3. **Error Handling**: Managing retries and failures in a controlled manner
+
+Here's an example of how to use task execution keys in your workflow activities:
+
+```java
+public class TaskExecutionKeyActivity implements WorkflowActivity {
+  @Override
+  public Object run(WorkflowActivityContext ctx) {
+    // Get the task execution key for this activity
+    String taskExecutionKey = ctx.getTaskExecutionKey();
+
+    // Use the key to implement idempotency or state management
+    // For example, check if this task has already been executed
+    if (isTaskAlreadyExecuted(taskExecutionKey)) {
+      return getPreviousResult(taskExecutionKey);
+    }
+
+    // Execute the activity logic
+    Object result = executeActivityLogic();
+
+    // Store the result with the task execution key
+    storeResult(taskExecutionKey, result);
+
+    return result;
+  }
+}
+```

sdk-tests/src/test/java/io/dapr/it/testcontainers/DaprWorkflowsIT.java

@@ -15,6 +15,7 @@
 
 import com.fasterxml.jackson.core.JsonProcessingException;
 import com.fasterxml.jackson.databind.ObjectMapper;
+
 import io.dapr.testcontainers.Component;
 import io.dapr.testcontainers.DaprContainer;
 import io.dapr.testcontainers.DaprLogLevel;
@@ -40,6 +41,7 @@
 import java.util.Map;
 
 import static io.dapr.it.testcontainers.ContainerConstants.DAPR_RUNTIME_IMAGE_TAG;
+import static org.junit.Assert.assertTrue;
 import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.junit.jupiter.api.Assertions.assertNotNull;
 
@@ -117,6 +119,29 @@ public void testWorkflows() throws Exception {
     assertEquals(instanceId, workflowOutput.getWorkflowId());
   }
 
+  @Test
+  public void testExecutionKeyWorkflows() throws Exception {
+    TestWorkflowPayload payload = new TestWorkflowPayload(new ArrayList<>());
+    String instanceId = workflowClient.scheduleNewWorkflow(TestExecutionKeysWorkflow.class, payload);
+
+    workflowClient.waitForInstanceStart(instanceId, Duration.ofSeconds(100), false);
+
+    Duration timeout = Duration.ofSeconds(1000);
+    WorkflowInstanceStatus workflowStatus = workflowClient.waitForInstanceCompletion(instanceId, timeout, true);
+
+    assertNotNull(workflowStatus);
+
+    TestWorkflowPayload workflowOutput = deserialize(workflowStatus.getSerializedOutput());
+
+    assertEquals(1, workflowOutput.getPayloads().size());
+    assertEquals("Execution key found", workflowOutput.getPayloads().get(0));
+
+    String executionKey = workflowOutput.getWorkflowId() +"-"+"io.dapr.it.testcontainers.TaskExecutionKeyActivity";
+    assertTrue(KeyStore.getInstance().getKey(executionKey));
+
+    assertEquals(instanceId, workflowOutput.getWorkflowId());
+  }
+
   private TestWorkflowPayload deserialize(String value) throws JsonProcessingException {
     return OBJECT_MAPPER.readValue(value, TestWorkflowPayload.class);
   }

sdk-tests/src/test/java/io/dapr/it/testcontainers/KeyStore.java

@@ -0,0 +1,51 @@
+/*
+ * Copyright 2025 The Dapr 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.dapr.it.testcontainers;
+
+import java.util.HashMap;
+import java.util.Map;
+
+public class KeyStore {
+
+    private final Map<String, Boolean> keyStore = new HashMap<>();
+
+    private static KeyStore instance;
+
+    private KeyStore() {
+    }
+
+    public static KeyStore getInstance() {
+        if (instance == null) {
+            synchronized (KeyStore.class) {
+                if (instance == null) {
+                    instance = new KeyStore();
+                }
+            }
+        }
+        return instance;
+    }
+
+
+    public void addKey(String key, Boolean value) {
+        keyStore.put(key, value);
+    }
+
+    public Boolean getKey(String key) {
+        return keyStore.get(key);
+    }
+
+    public void removeKey(String key) {
+        keyStore.remove(key);
+    }
+
+}

sdk-tests/src/test/java/io/dapr/it/testcontainers/TaskExecutionKeyActivity.java

@@ -0,0 +1,35 @@
+/*
+ * Copyright 2025 The Dapr 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.dapr.it.testcontainers;
+
+import io.dapr.workflows.WorkflowActivity;
+import io.dapr.workflows.WorkflowActivityContext;
+
+public class TaskExecutionKeyActivity implements WorkflowActivity {
+
+  @Override
+  public Object run(WorkflowActivityContext ctx) {
+    TestWorkflowPayload workflowPayload = ctx.getInput(TestWorkflowPayload.class);
+    KeyStore keyStore = KeyStore.getInstance();
+    Boolean exists = keyStore.getKey(ctx.getTaskExecutionKey());
+    if (!Boolean.TRUE.equals(exists)) {
+      keyStore.addKey(ctx.getTaskExecutionKey(), true);
+      workflowPayload.getPayloads().add("Execution key not found");
+      throw new IllegalStateException("Task execution key not found");
+    }
+    workflowPayload.getPayloads().add("Execution key found");
+    return workflowPayload;
+  }
+
+}

sdk-tests/src/test/java/io/dapr/it/testcontainers/TestDaprWorkflowsConfiguration.java

@@ -56,9 +56,12 @@ public WorkflowRuntimeBuilder workflowRuntimeBuilder(
     WorkflowRuntimeBuilder builder = new WorkflowRuntimeBuilder(new Properties(overrides));
 
     builder.registerWorkflow(TestWorkflow.class);
+    builder.registerWorkflow(TestExecutionKeysWorkflow.class);
     builder.registerActivity(FirstActivity.class);
     builder.registerActivity(SecondActivity.class);
-
+    builder.registerActivity(TaskExecutionKeyActivity.class);
+
+
     return builder;
   }
 }

sdk-tests/src/test/java/io/dapr/it/testcontainers/TestExecutionKeysWorkflow.java

@@ -0,0 +1,58 @@
+/*
+ * Copyright 2025 The Dapr 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.dapr.it.testcontainers;
+
+import io.dapr.durabletask.Task;
+import io.dapr.workflows.Workflow;
+import io.dapr.workflows.WorkflowStub;
+import io.dapr.workflows.WorkflowTaskOptions;
+import io.dapr.workflows.WorkflowTaskRetryPolicy;
+
+import java.time.Duration;
+
+import org.slf4j.Logger;
+
+public class TestExecutionKeysWorkflow implements Workflow {
+
+  @Override
+  public WorkflowStub create() {
+    return ctx -> {
+
+      Logger logger = ctx.getLogger();
+      String instanceId = ctx.getInstanceId();
+      logger.info("Starting Workflow: " + ctx.getName());
+      logger.info("Instance ID: " + instanceId);
+      logger.info("Current Orchestration Time: " + ctx.getCurrentInstant());
+
+      TestWorkflowPayload workflowPayload = ctx.getInput(TestWorkflowPayload.class);
+      workflowPayload.setWorkflowId(instanceId);
+
+      WorkflowTaskOptions options = new WorkflowTaskOptions(WorkflowTaskRetryPolicy.newBuilder()
+      .setMaxNumberOfAttempts(3)
+      .setFirstRetryInterval(Duration.ofSeconds(1))
+      .setMaxRetryInterval(Duration.ofSeconds(10))
+      .setBackoffCoefficient(2.0)  
+      .setRetryTimeout(Duration.ofSeconds(50))
+      .build());
+
+
+      Task<TestWorkflowPayload> t =   ctx.callActivity(TaskExecutionKeyActivity.class.getName(), workflowPayload, options,TestWorkflowPayload.class);
+
+      TestWorkflowPayload payloadAfterExecution = t.await();
+
+      ctx.complete(payloadAfterExecution);
+    };
+  }
+
+}

sdk-workflows/src/main/java/io/dapr/workflows/WorkflowActivityContext.java

@@ -17,6 +17,8 @@ public interface WorkflowActivityContext {
 
   String getName();
 
+  String getTaskExecutionKey();
+
   <T> T getInput(Class<T> targetType);
 
 }

sdk-workflows/src/main/java/io/dapr/workflows/runtime/DefaultWorkflowActivityContext.java

@@ -56,4 +56,9 @@ public String getName() {
   public <T> T getInput(Class<T> targetType) {
     return this.innerContext.getInput(targetType);
   }
+
+  @Override
+  public String getTaskExecutionKey() {
+    return this.innerContext.getTaskExecutionKey();
+  }
 }

sdk-workflows/src/test/java/io/dapr/workflows/runtime/WorkflowActivityClassWrapperTest.java

@@ -16,7 +16,7 @@ public static class TestActivity implements WorkflowActivity {
     @Override
     public Object run(WorkflowActivityContext ctx) {
       String activityContextName = ctx.getName();
-      return ctx.getInput(String.class) + " world! from " + activityContextName;
+      return ctx.getInput(String.class) + " world! from " + activityContextName + " with task execution key " + ctx.getTaskExecutionKey();
     }
   }
 
@@ -37,10 +37,11 @@ public void createWithClass() {
 
     when(mockContext.getInput(String.class)).thenReturn("Hello");
     when(mockContext.getName()).thenReturn("TestActivityContext");
+    when(mockContext.getTaskExecutionKey()).thenReturn("123");
 
     Object result = wrapper.create().run(mockContext);
 
     verify(mockContext, times(1)).getInput(String.class);
-    assertEquals("Hello world! from TestActivityContext", result);
+    assertEquals("Hello world! from TestActivityContext with task execution key 123", result);
   }
 }