Kotlin basics examples

java/basics/src/main/java/workflows/SignupWorkflow.java

@@ -89,5 +89,5 @@ public static void main(String[] args) {
   curl localhost:8080/SignupWorkflow/userid1/click -H 'content-type: application/json' -d '{ "secret": "xxx"}'
 
 - Attach back to the workflow to get the result:
-  curl localhost:8080/restate/workflow/SignupWorkflow/userid1/attach
+  curl -X POST localhost:8080/restate/workflow/SignupWorkflow/userid1/attach
 */

kotlin/basics/README.md

@@ -14,14 +14,14 @@ about how they work and how they can be run.
   finished actions. The example applies creates a subscription to movie streaming services
   by first creating a recurring payment and then adding the subscriptions.
 
-* **[Building blocks](src/main/java/building_blocks/MyService.java):** Restate gives you a durable version
+* **[Building blocks](src/main/kotlin/building_blocks/MyService.kt):** Restate gives you a durable version
   of common building blocks like queues, promises, RPC, state, and timers.
   This example shows a reference of the API and what you can do with it.
 
-* **[Virtual Objects](src/main/java/virtual_objects/GreeterObject.java):** Stateful serverless objects
+* **[Virtual Objects](src/main/kotlin/virtual_objects/GreeterObject.kt):** Stateful serverless objects
   to manage durable consistent state and state-manipulating logic.
 
-* **[Workflows](src/main/java/workflows/SignupWorkflow.java):** Workflows are durable execution tasks that can
+* **[Workflows](src/main/kotlin/workflows/SignupWorkflow.kt):** Workflows are durable execution tasks that can
   be submitted and awaited. They have an identity and can be signaled and queried
   through durable promises. The example is a user-signup flow that takes multiple
   operations, including verifying the email address.
@@ -34,8 +34,8 @@ about how they work and how they can be run.
 2. Start the relevant example:
   - `./gradlew -PmainClass=durable_execution.SubscriptionServiceKt run` for the Durable Execution example
   - The building blocks example is not runnable and more like a reference of what you can do with the API
-  - `./gradlew -PmainClass=workflows.SignupWorkflowKt run` for the Workflows example
   - `./gradlew -PmainClass=virtual_objects.GreeterObjectKt run` for the Virtual Objects example
+  - `./gradlew -PmainClass=workflows.SignupWorkflowKt run` for the Workflows example
 
 3. Register the example at Restate server by calling
    `restate -y deployment register --force localhost:9080`.

kotlin/basics/src/main/kotlin/utils/data_structures.kt

@@ -2,12 +2,6 @@ package utils
 
 import kotlinx.serialization.Serializable
 
-@Serializable
-data class UserRole(val roleKey: String, val roleDescription: String)
-
-@Serializable
-data class Permission(val permissionKey: String, val setting: String)
-
 @Serializable
 data class SubscriptionRequest(val userId: String, val creditCard: String, val subscriptions: List<String>)
 

kotlin/basics/src/main/kotlin/utils/stubs.kt

@@ -7,13 +7,13 @@ private val killProcess: Boolean = System.getenv("CRASH_PROCESS") != null
 
 fun maybeCrash(probability: Double) {
   if (Math.random() < probability) {
-    logger.error("A failure happened!")
+    logger.error("👻 A failure happened!")
 
     if (killProcess) {
-      logger.error("--- CRASHING THE PROCESS ---")
+      logger.error("👻 --- CRASHING THE PROCESS ---")
       System.exit(1)
     } else {
-      throw RuntimeException("A failure happened!")
+      throw RuntimeException("👻 A failure happened!")
     }
   }
 }

kotlin/basics/src/main/kotlin/virtual_objects/GreeterObject.kt

@@ -67,7 +67,7 @@ curl localhost:8080/GreeterObject/mary/greet -H 'content-type: application/json'
 curl localhost:8080/GreeterObject/barack/greet -H 'content-type: application/json' -d '"Hello"'
   --> "Hello barack for the 1-th time."
 
-curl localhost:8080/GreeterObject/mary/ungreet -H 'content-type: application/json' -d ''
+curl -X POST localhost:8080/GreeterObject/mary/ungreet
   --> "Dear mary, taking one greeting back: 0."
 
  */

kotlin/basics/src/main/kotlin/workflows/SignupWorkflow.kt

@@ -66,7 +66,7 @@ Check the README to learn how to run Restate.
 - Then, submit the workflow via HTTP:
   curl localhost:8080/SignupWorkflow/userid1/run/send -H 'content-type: application/json' -d '{ "name": "Bob", "email": "bob@builder.com" }'
 
-- Resolve the email link via:
+- Resolve the email link via / Copy it over from the service log of executing the first command:
   curl localhost:8080/SignupWorkflow/userid1/click -H 'content-type: application/json' -d '{ "secret": "xxx"}'
 
 - Attach back to the workflow to get the result: