multi

state_machines/multi_module_sample/api-module/build.gradle

@@ -0,0 +1,12 @@
+plugins {
+    id 'java'
+}
+
+repositories {
+    mavenCentral()
+}
+
+dependencies {
+    implementation 'org.springframework.boot:spring-boot-starter-web:3.2.0'
+    implementation 'org.springframework.statemachine:spring-statemachine-core:3.2.0'
+}

state_machines/multi_module_sample/api-module/src/main/java/click/kamil/multi/api/OrderApi.java

@@ -0,0 +1,12 @@
+package click.kamil.multi.api;
+
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+
+@RequestMapping("/orders")
+public interface OrderApi {
+
+    @PostMapping("/submit")
+    void submitOrder(@RequestBody String orderId);
+}

state_machines/multi_module_sample/api-module/src/main/java/click/kamil/multi/api/ProcessAction.java

@@ -0,0 +1,12 @@
+package click.kamil.multi.api;
+
+import org.springframework.statemachine.StateContext;
+import org.springframework.statemachine.action.Action;
+
+public interface ProcessAction extends Action<String, String> {
+
+    @Override
+    default void execute(StateContext<String, String> context) {
+        System.out.println("Processing order: " + context.getMessageHeader("orderId"));
+    }
+}

state_machines/multi_module_sample/core-module/build.gradle

@@ -0,0 +1,13 @@
+plugins {
+    id 'java'
+}
+
+repositories {
+    mavenCentral()
+}
+
+dependencies {
+    implementation project(':state_machines:multi_module_sample:api-module')
+    implementation 'org.springframework.boot:spring-boot-starter-web:3.2.0'
+    implementation 'org.springframework.statemachine:spring-statemachine-core:3.2.0'
+}

state_machines/multi_module_sample/core-module/src/main/java/click/kamil/multi/core/OrderController.java

@@ -0,0 +1,20 @@
+package click.kamil.multi.core;
+
+import click.kamil.multi.api.OrderApi;
+import lombok.RequiredArgsConstructor;
+import org.springframework.statemachine.StateMachine;
+import org.springframework.statemachine.config.StateMachineFactory;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+@RequiredArgsConstructor
+public class OrderController implements OrderApi {
+
+    private final StateMachineFactory<String, String> factory;
+
+    @Override
+    public void submitOrder(String orderId) {
+        StateMachine<String, String> sm = factory.getStateMachine(orderId);
+        sm.sendEvent("SUBMIT");
+    }
+}

state_machines/multi_module_sample/core-module/src/main/java/click/kamil/multi/core/OrderStateMachineConfig.java

@@ -0,0 +1,43 @@
+package click.kamil.multi.core;
+
+import click.kamil.multi.api.ProcessAction;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.statemachine.config.EnableStateMachineFactory;
+import org.springframework.statemachine.config.StateMachineConfigurerAdapter;
+import org.springframework.statemachine.config.builders.StateMachineStateConfigurer;
+import org.springframework.statemachine.config.builders.StateMachineTransitionConfigurer;
+
+@Configuration
+@EnableStateMachineFactory
+public class OrderStateMachineConfig extends StateMachineConfigurerAdapter<String, String> {
+
+    @Override
+    public void configure(StateMachineStateConfigurer<String, String> states) throws Exception {
+        states
+            .withStates()
+            .initial("NEW")
+            .state("PROCESSING")
+            .end("COMPLETED");
+    }
+
+    @Override
+    public void configure(StateMachineTransitionConfigurer<String, String> transitions) throws Exception {
+        transitions
+            .withExternal()
+                .source("NEW")
+                .target("PROCESSING")
+                .event("SUBMIT")
+                .action(processAction())
+            .and()
+            .withExternal()
+                .source("PROCESSING")
+                .target("COMPLETED")
+                .event("FINISH");
+    }
+
+    @Bean
+    public ProcessAction processAction() {
+        return new ProcessAction() {};
+    }
+}

state_machines/multi_module_sample/settings.gradle

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+rootProject.name = 'multi-module-sample'
+include 'api-module'
+include 'core-module'