完成spring jpa的存储适配

flowable-core/pom.xml

@@ -0,0 +1,46 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <parent>
+        <groupId>com.lanyuanxiaoyao</groupId>
+        <artifactId>flowable</artifactId>
+        <version>1.0.0-SNAPSHOT</version>
+    </parent>
+
+    <modelVersion>4.0.0</modelVersion>
+    <artifactId>flowable-core</artifactId>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.projectlombok</groupId>
+            <artifactId>lombok</artifactId>
+            <version>1.18.34</version>
+            <scope>compile</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.slf4j</groupId>
+            <artifactId>slf4j-api</artifactId>
+            <version>2.0.16</version>
+        </dependency>
+        <dependency>
+            <groupId>org.junit.jupiter</groupId>
+            <artifactId>junit-jupiter-api</artifactId>
+            <version>5.11.4</version>
+        </dependency>
+
+        <dependency>
+            <groupId>org.slf4j</groupId>
+            <artifactId>slf4j-simple</artifactId>
+            <version>2.0.16</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.junit.jupiter</groupId>
+            <artifactId>junit-jupiter</artifactId>
+            <version>5.11.4</version>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+
+</project>

flowable-core/src/main/java/com/lanyuanxiaoyao/flowable/core/helper/ListHelper.java

@@ -0,0 +1,24 @@
+package com.lanyuanxiaoyao.flowable.core.helper;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import lombok.NoArgsConstructor;
+
+/**
+ * List工具
+ *
+ * @author lanyuanxiaoyao
+ * @version 20241231
+ */
+@NoArgsConstructor(access = lombok.AccessLevel.PRIVATE)
+public class ListHelper {
+  @SafeVarargs
+  public static <T> List<T> of(T... entries) {
+    return new ArrayList<>(Arrays.asList(entries));
+  }
+
+  public static <T> List<T> empty() {
+    return new ArrayList<>();
+  }
+}

flowable-core/src/main/java/com/lanyuanxiaoyao/flowable/core/helper/MapHelper.java

@@ -0,0 +1,30 @@
+package com.lanyuanxiaoyao.flowable.core.helper;
+
+import java.util.HashMap;
+import java.util.Map;
+import lombok.NoArgsConstructor;
+
+/**
+ * Map工具
+ *
+ * @author lanyuanxiaoyao
+ * @version 20241231
+ */
+@NoArgsConstructor(access = lombok.AccessLevel.PRIVATE)
+public class MapHelper {
+  @SuppressWarnings("unchecked")
+  public static <K, V> Map<K, V> of(Object... entries) {
+    if (entries.length % 2 != 0) {
+      throw new IllegalArgumentException("参数必须为偶数个");
+    }
+    Map<K, V> map = new HashMap<>(entries.length / 2 + 1);
+    for (int index = 0; index < entries.length; index += 2) {
+      map.put((K) entries[index], (V) entries[index + 1]);
+    }
+    return map;
+  }
+
+  public static Map<String, Object> empty() {
+    return new HashMap<>(0);
+  }
+}

flowable-core/src/main/java/com/lanyuanxiaoyao/flowable/core/helper/StringHelper.java

@@ -0,0 +1,20 @@
+package com.lanyuanxiaoyao.flowable.core.helper;
+
+import lombok.NoArgsConstructor;
+
+/**
+ * String工具
+ *
+ * @author lanyuanxiaoyao
+ * @version 20241231
+ */
+@NoArgsConstructor(access = lombok.AccessLevel.PRIVATE)
+public class StringHelper {
+  public static Boolean isBlank(String text) {
+    return text == null || text.trim().isEmpty();
+  }
+
+  public static Boolean equals(String text1, String text2) {
+    return text1 != null && text1.equals(text2);
+  }
+}

flowable-core/src/main/java/com/lanyuanxiaoyao/flowable/core/manager/FlowableManager.java

@@ -0,0 +1,156 @@
+package com.lanyuanxiaoyao.flowable.core.manager;
+
+import com.lanyuanxiaoyao.flowable.core.helper.ListHelper;
+import com.lanyuanxiaoyao.flowable.core.helper.MapHelper;
+import com.lanyuanxiaoyao.flowable.core.helper.StringHelper;
+import com.lanyuanxiaoyao.flowable.core.model.FlowableHistory;
+import com.lanyuanxiaoyao.flowable.core.model.FlowableInstance;
+import com.lanyuanxiaoyao.flowable.core.model.FlowableAction;
+import com.lanyuanxiaoyao.flowable.core.model.FlowableListener;
+import com.lanyuanxiaoyao.flowable.core.model.FlowableNode;
+import com.lanyuanxiaoyao.flowable.core.repository.FlowableRepository;
+import java.time.LocalDateTime;
+import java.util.List;
+import java.util.Map;
+import java.util.Objects;
+import java.util.function.Consumer;
+import lombok.extern.slf4j.Slf4j;
+
+/**
+ * 流程服务
+ *
+ * @author lanyuanxiaoyao
+ * @version 20241231
+ */
+@Slf4j
+public abstract class FlowableManager {
+  private final FlowableRepository flowableRepository;
+  private final IdGenerator idGenerator;
+
+  public FlowableManager(FlowableRepository flowableRepository, IdGenerator idGenerator) {
+    this.flowableRepository = flowableRepository;
+    this.idGenerator = idGenerator;
+  }
+
+  public List<FlowableNode> listNodes() {
+    return flowableRepository.listNodes();
+  }
+
+  public FlowableNode getNode(String nodeId) {
+    return flowableRepository.getNode(nodeId);
+  }
+
+  public List<FlowableInstance> listInstances() {
+    return flowableRepository.listInstances();
+  }
+
+  public FlowableInstance getInstance(String instantId) {
+    return flowableRepository.getInstance(instantId);
+  }
+
+  public List<FlowableHistory> listHistories(String instanceId) {
+    return flowableRepository.listHistories(instanceId);
+  }
+
+  public FlowableHistory getHistory(String historyId) {
+    return flowableRepository.getHistory(historyId);
+  }
+
+  public void create(FlowableNode... node) {
+    flowableRepository.saveNode(ListHelper.of(node));
+  }
+
+  public String start(String nodeId) {
+    return start(nodeId, MapHelper.empty());
+  }
+
+  public String start(String nodeId, Map<String, Object> metadata) {
+    FlowableNode node = flowableRepository.getNode(nodeId);
+    FlowableInstance instance = new FlowableInstance(idGenerator.createId(), node.getNodeId(), metadata);
+    flowableRepository.saveInstance(instance);
+
+    if (FlowableNode.RunType.AUTOMATIC.equals(node.getRunType())) {
+      action(instance, node, FlowableAction.APPROVE, "系统审批通过", MapHelper.empty());
+    }
+    return instance.getInstanceId();
+  }
+
+  public void approve(String instanceId) {
+    approve(instanceId, "审批通过");
+  }
+
+  public void approve(String instanceId, String comment) {
+    action(instanceId, FlowableAction.APPROVE, comment);
+  }
+
+  public void reject(String instanceId) {
+    reject(instanceId, "审批不通过");
+  }
+
+  public void reject(String instanceId, String comment) {
+    action(instanceId, FlowableAction.REJECT, comment);
+  }
+
+  public void terminal(String instanceId) {
+    terminal(instanceId, "流程被终止");
+  }
+
+  public void terminal(String instanceId, String comment) {
+    action(instanceId, FlowableAction.TERMINAL, comment);
+  }
+
+  public void action(String instanceId, FlowableAction action, String comment) {
+    action(instanceId, action, comment, MapHelper.empty());
+  }
+
+  private void action(String instanceId, FlowableAction action, String comment, Map<String, Object> metadata) {
+    FlowableInstance instance = flowableRepository.getInstance(instanceId);
+    FlowableNode node = flowableRepository.getNode(instance.getCurrentNodeId());
+    action(instance, node, action, comment, metadata);
+  }
+
+  private void action(FlowableInstance instance, FlowableNode node, FlowableAction action, String comment, Map<String, Object> metadata) {
+    if (FlowableInstance.Status.COMPLETED.equals(instance.getStatus()) || FlowableInstance.Status.ERROR.equals(instance.getStatus())) {
+      throw new IllegalArgumentException("ID为" + instance.getInstanceId() + "的流程已结束，无法操作");
+    }
+    if (FlowableAction.TERMINAL.equals(action)) {
+      saveInstance(instance, FlowableInstance.Status.ERROR, metadata, action, comment);
+      return;
+    }
+    if (Objects.isNull(node.getNextNodes())
+        || !node.getNextNodes().containsKey(action)
+        || StringHelper.isBlank(node.getNextNodes().get(action))) {
+      saveInstance(instance, FlowableInstance.Status.COMPLETED, metadata, action, comment);
+      return;
+    }
+    String nextNodeId = node.getNextNodes().get(action);
+    FlowableNode nextNode = flowableRepository.getNode(nextNodeId);
+    instance.setCurrentNodeId(nextNode.getNodeId());
+    saveInstance(instance, FlowableInstance.Status.RUNNING, metadata, action, comment);
+
+    if (FlowableNode.RunType.AUTOMATIC.equals(nextNode.getRunType())) {
+      action(instance, node, FlowableAction.APPROVE, "系统审批通过", metadata);
+    }
+  }
+
+  private void saveInstance(FlowableInstance instance, FlowableInstance.Status status, Map<String, Object> metadata, FlowableAction action, String comment) {
+    instance.setStatus(status);
+    if (Objects.nonNull(metadata)) {
+      instance.addMetadata(metadata);
+    }
+    instance.setUpdatedTime(LocalDateTime.now());
+
+    FlowableHistory history = new FlowableHistory(idGenerator.createId(), instance.getInstanceId(), action, comment);
+    flowableRepository.saveInstanceAndHistory(instance, history);
+  }
+
+  private void callListeners(List<FlowableListener> listeners, Consumer<FlowableListener> handler) {
+    for (FlowableListener listener : listeners) {
+      handler.accept(listener);
+    }
+  }
+
+  public interface IdGenerator {
+    String createId();
+  }
+}

flowable-core/src/main/java/com/lanyuanxiaoyao/flowable/core/model/FlowableAccessor.java

@@ -0,0 +1,11 @@
+package com.lanyuanxiaoyao.flowable.core.model;
+
+/**
+ * 权限校验
+ *
+ * @author lanyuanxiaoyao
+ * @version 20241231
+ */
+public interface FlowableAccessor {
+  void access(String accessor);
+}

flowable-core/src/main/java/com/lanyuanxiaoyao/flowable/core/model/FlowableAction.java

@@ -0,0 +1,13 @@
+package com.lanyuanxiaoyao.flowable.core.model;
+
+/**
+ * 节点操作
+ *
+ * @author lanyuanxiaoyao
+ * @version 20241231
+ */
+public enum FlowableAction {
+  APPROVE,
+  REJECT,
+  TERMINAL,
+}

flowable-core/src/main/java/com/lanyuanxiaoyao/flowable/core/model/FlowableHistory.java

@@ -0,0 +1,29 @@
+package com.lanyuanxiaoyao.flowable.core.model;
+
+import java.time.LocalDateTime;
+import lombok.Data;
+
+/**
+ * @author lanyuanxiaoyao
+ * @version 20241231
+ */
+@Data
+public class FlowableHistory {
+  private final String historyId;
+  private final String instanceId;
+  private final FlowableAction action;
+  private final String comment;
+  private final LocalDateTime createdTime;
+
+  public FlowableHistory(String historyId, String instanceId, FlowableAction action, String comment) {
+    this(historyId, instanceId, action, comment, LocalDateTime.now());
+  }
+
+  public FlowableHistory(String historyId, String instanceId, FlowableAction action, String comment, LocalDateTime createdTime) {
+    this.historyId = historyId;
+    this.instanceId = instanceId;
+    this.action = action;
+    this.comment = comment;
+    this.createdTime = createdTime;
+  }
+}

flowable-core/src/main/java/com/lanyuanxiaoyao/flowable/core/model/FlowableInstance.java

@@ -0,0 +1,48 @@
+package com.lanyuanxiaoyao.flowable.core.model;
+
+import com.lanyuanxiaoyao.flowable.core.helper.MapHelper;
+import java.time.LocalDateTime;
+import java.util.Map;
+import lombok.Data;
+
+/**
+ * @author lanyuanxiaoyao
+ * @version 20241231
+ */
+@Data
+public class FlowableInstance {
+  private final String instanceId;
+  private final Map<String, Object> metadata;
+  private final LocalDateTime createdTime;
+
+  private String currentNodeId;
+  private Status status;
+  private LocalDateTime updatedTime = LocalDateTime.now();
+
+  public FlowableInstance(String instanceId, String currentNodeId) {
+    this(instanceId, currentNodeId, MapHelper.empty(), Status.RUNNING, LocalDateTime.now(), LocalDateTime.now());
+  }
+
+  public FlowableInstance(String instanceId, String currentNodeId, Map<String, Object> metadata) {
+    this(instanceId, currentNodeId, metadata, Status.RUNNING, LocalDateTime.now(), LocalDateTime.now());
+  }
+
+  public FlowableInstance(String instanceId, String currentNodeId, Map<String, Object> metadata, Status status, LocalDateTime createdTime, LocalDateTime updatedTime) {
+    this.instanceId = instanceId;
+    this.metadata = metadata;
+    this.createdTime = createdTime;
+    this.currentNodeId = currentNodeId;
+    this.status = status;
+    this.updatedTime = updatedTime;
+  }
+
+  public void addMetadata(Map<String, Object> metadata) {
+    this.metadata.putAll(metadata);
+  }
+
+  public enum Status {
+    RUNNING,
+    COMPLETED,
+    ERROR,
+  }
+}

flowable-core/src/main/java/com/lanyuanxiaoyao/flowable/core/model/FlowableListener.java

@@ -0,0 +1,19 @@
+package com.lanyuanxiaoyao.flowable.core.model;
+
+/**
+ * 节点监听
+ *
+ * @author lanyuanxiaoyao
+ * @version 20241231
+ */
+public interface FlowableListener {
+  void onStart(FlowableInstance instance);
+
+  void onError(FlowableInstance instance, Throwable throwable);
+
+  void onComplete(FlowableInstance instance);
+
+  void onApprove(FlowableInstance instance);
+
+  void onReject(FlowableInstance instance);
+}

flowable-core/src/main/java/com/lanyuanxiaoyao/flowable/core/model/FlowableNode.java

@@ -0,0 +1,45 @@
+package com.lanyuanxiaoyao.flowable.core.model;
+
+import com.lanyuanxiaoyao.flowable.core.helper.ListHelper;
+import java.time.LocalDateTime;
+import java.util.List;
+import java.util.Map;
+import lombok.Data;
+
+/**
+ * 流程节点
+ *
+ * @author lanyuanxiaoyao
+ * @version 20241231
+ */
+@Data
+public class FlowableNode {
+  private final String nodeId;
+  private final String name;
+  private final String description;
+  private final RunType runType;
+  private final Map<FlowableAction, String> nextNodes;
+  private final List<Class<? extends FlowableListener>> listeners;
+  private final LocalDateTime createdTime;
+
+  private LocalDateTime updatedTime = LocalDateTime.now();
+
+  public FlowableNode(String nodeId, String name, String description, RunType runType, Map<FlowableAction, String> nextNodes) {
+    this(nodeId, name, description, runType, nextNodes, ListHelper.empty(), LocalDateTime.now());
+  }
+
+  public FlowableNode(String nodeId, String name, String description, RunType runType, Map<FlowableAction, String> nextNodes, List<Class<? extends FlowableListener>> listeners, LocalDateTime createdTime) {
+    this.nodeId = nodeId;
+    this.name = name;
+    this.description = description;
+    this.runType = runType;
+    this.nextNodes = nextNodes;
+    this.listeners = listeners;
+    this.createdTime = createdTime;
+  }
+
+  public enum RunType {
+    AUTOMATIC,
+    MANUAL,
+  }
+}

flowable-core/src/main/java/com/lanyuanxiaoyao/flowable/core/repository/FlowableRepository.java

@@ -0,0 +1,39 @@
+package com.lanyuanxiaoyao.flowable.core.repository;
+
+import com.lanyuanxiaoyao.flowable.core.model.FlowableHistory;
+import com.lanyuanxiaoyao.flowable.core.model.FlowableInstance;
+import com.lanyuanxiaoyao.flowable.core.model.FlowableNode;
+import java.util.List;
+
+/**
+ * 存储统一管理
+ *
+ * @author lanyuanxiaoyao
+ * @version 20241231
+ */
+public interface FlowableRepository {
+  void saveNode(FlowableNode node);
+
+  void saveNode(List<FlowableNode> nodes);
+
+  FlowableNode getNode(String nodeId);
+
+  List<FlowableNode> listNodes();
+
+  void saveInstance(FlowableInstance instance);
+
+  FlowableInstance getInstance(String instantId);
+
+  List<FlowableInstance> listInstances();
+
+  void saveHistory(FlowableHistory history);
+
+  FlowableHistory getHistory(String historyId);
+
+  List<FlowableHistory> listHistories(String instanceId);
+
+  /**
+   * 同时保存实例和历史记录，单独设立这里一个方法是方便数据库使用事务重写
+   */
+  void saveInstanceAndHistory(FlowableInstance instance, FlowableHistory history);
+}

flowable-core/src/main/java/com/lanyuanxiaoyao/flowable/core/test/TestFlowableManager.java

@@ -0,0 +1,123 @@
+package com.lanyuanxiaoyao.flowable.core.test;
+
+import com.lanyuanxiaoyao.flowable.core.helper.MapHelper;
+import com.lanyuanxiaoyao.flowable.core.manager.FlowableManager;
+import com.lanyuanxiaoyao.flowable.core.model.FlowableAction;
+import com.lanyuanxiaoyao.flowable.core.model.FlowableInstance;
+import com.lanyuanxiaoyao.flowable.core.model.FlowableNode;
+import java.util.Map;
+import java.util.UUID;
+import lombok.extern.slf4j.Slf4j;
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+
+/**
+ * 集成测试
+ *
+ * @author lanyuanxiaoyao
+ * @version 20241231
+ */
+@Slf4j
+public abstract class TestFlowableManager {
+  protected abstract FlowableManager flowableManager();
+
+  private FlowableNode createManualNode() {
+    return createManualNode(UUID.randomUUID().toString(), null);
+  }
+
+  private FlowableNode createManualNode(String nodeId) {
+    return createManualNode(nodeId, null);
+  }
+
+  private FlowableNode createManualNode(String nodeId, Map<FlowableAction, String> nextNodes) {
+    return new FlowableNode(
+        nodeId,
+        UUID.randomUUID().toString(),
+        UUID.randomUUID().toString(),
+        FlowableNode.RunType.MANUAL,
+        nextNodes
+    );
+  }
+
+  /**
+   * 单节点审批
+   */
+  @Test
+  public void testSingleNode() {
+    FlowableManager manager = flowableManager();
+    FlowableNode node1 = createManualNode();
+    manager.create(node1);
+    Assertions.assertNotNull(manager.getNode(node1.getNodeId()));
+
+    String instanceId = manager.start(node1.getNodeId());
+    Assertions.assertEquals(FlowableInstance.Status.RUNNING, manager.getInstance(instanceId).getStatus());
+    Assertions.assertTrue(manager.listHistories(instanceId).isEmpty());
+
+    manager.approve(instanceId, "3ca20a11-dfb6-435b-8dcc-d00c6c0abd7f");
+    Assertions.assertEquals(FlowableInstance.Status.COMPLETED, manager.getInstance(instanceId).getStatus());
+    Assertions.assertEquals(1, manager.listHistories(instanceId).size());
+    Assertions.assertEquals(FlowableAction.APPROVE, manager.listHistories(instanceId).get(0).getAction());
+    Assertions.assertEquals("3ca20a11-dfb6-435b-8dcc-d00c6c0abd7f", manager.listHistories(instanceId).get(0).getComment());
+
+    instanceId = manager.start(node1.getNodeId());
+    manager.reject(instanceId, "3ca20a11-dfb6-435b-8dcc-d00c6c0abd7f");
+    Assertions.assertEquals(FlowableInstance.Status.COMPLETED, manager.getInstance(instanceId).getStatus());
+    Assertions.assertEquals(FlowableAction.REJECT, manager.listHistories(instanceId).get(0).getAction());
+    Assertions.assertEquals("3ca20a11-dfb6-435b-8dcc-d00c6c0abd7f", manager.listHistories(instanceId).get(0).getComment());
+  }
+
+  @Test
+  public void testMultiNode() {
+    FlowableManager manager = flowableManager();
+    FlowableNode node1 = createManualNode(
+        "02779cbe-0d82-4e09-9bf8-60885400d100",
+        MapHelper.of(
+            FlowableAction.APPROVE, "1e126640-34ae-40f9-b55f-9cb8099d638f",
+            FlowableAction.REJECT, "02779cbe-0d82-4e09-9bf8-60885400d100"
+        )
+    );
+    FlowableNode node2 = createManualNode(
+        "1e126640-34ae-40f9-b55f-9cb8099d638f",
+        MapHelper.of(FlowableAction.REJECT, "02779cbe-0d82-4e09-9bf8-60885400d100")
+    );
+    manager.create(node1, node2);
+
+    String instanceId = manager.start(node1.getNodeId());
+
+    manager.reject(instanceId);
+    Assertions.assertEquals(FlowableInstance.Status.RUNNING, manager.getInstance(instanceId).getStatus());
+    Assertions.assertEquals(node1.getNodeId(), manager.getNode(manager.getInstance(instanceId).getCurrentNodeId()).getNodeId());
+
+    manager.approve(instanceId);
+    manager.reject(instanceId, "我觉得不行");
+    Assertions.assertEquals(FlowableInstance.Status.RUNNING, manager.getInstance(instanceId).getStatus());
+    Assertions.assertEquals(node1.getNodeId(), manager.getNode(manager.getInstance(instanceId).getCurrentNodeId()).getNodeId());
+
+    manager.approve(instanceId);
+    manager.approve(instanceId);
+    Assertions.assertEquals(FlowableInstance.Status.COMPLETED, manager.getInstance(instanceId).getStatus());
+    Assertions.assertEquals(node2.getNodeId(), manager.getNode(manager.getInstance(instanceId).getCurrentNodeId()).getNodeId());
+
+    Assertions.assertEquals(FlowableAction.APPROVE, manager.listHistories(instanceId).get(4).getAction());
+    Assertions.assertEquals(5, manager.listHistories(instanceId).size());
+  }
+
+  @Test
+  public void testTerminal() {
+    FlowableManager manager = flowableManager();
+    FlowableNode node1 = createManualNode();
+    manager.create(node1);
+
+    String instanceId = manager.start(node1.getNodeId());
+
+    Assertions.assertEquals(FlowableInstance.Status.RUNNING, manager.getInstance(instanceId).getStatus());
+
+    manager.terminal(instanceId, "d896b642-a1d8-499c-92e7-bed63581f2f8");
+    Assertions.assertEquals(FlowableInstance.Status.ERROR, manager.getInstance(instanceId).getStatus());
+    Assertions.assertEquals(1, manager.listHistories(instanceId).size());
+    Assertions.assertEquals(FlowableAction.TERMINAL, manager.listHistories(instanceId).get(0).getAction());
+    Assertions.assertEquals("d896b642-a1d8-499c-92e7-bed63581f2f8", manager.listHistories(instanceId).get(0).getComment());
+
+    Assertions.assertThrows(IllegalArgumentException.class, () -> manager.approve(instanceId));
+  }
+}

flowable-core/src/test/java/com/lanyuanxiaoyao/flowable/core/InMemoryFlowableRepository.java

@@ -0,0 +1,90 @@
+package com.lanyuanxiaoyao.flowable.core;
+
+import com.lanyuanxiaoyao.flowable.core.helper.ListHelper;
+import com.lanyuanxiaoyao.flowable.core.helper.StringHelper;
+import com.lanyuanxiaoyao.flowable.core.model.FlowableHistory;
+import com.lanyuanxiaoyao.flowable.core.model.FlowableInstance;
+import com.lanyuanxiaoyao.flowable.core.model.FlowableNode;
+import com.lanyuanxiaoyao.flowable.core.repository.FlowableRepository;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * 内存存储
+ *
+ * @author lanyuanxiaoyao
+ * @version 20241231
+ */
+public class InMemoryFlowableRepository implements FlowableRepository {
+  private static final Map<String, FlowableNode> nodes = new HashMap<>();
+  private static final Map<String, FlowableInstance> instances = new HashMap<>();
+  private static final Map<String, List<FlowableHistory>> histories = new HashMap<>();
+
+  @Override
+  public void saveNode(FlowableNode node) {
+    nodes.put(node.getNodeId(), node);
+  }
+
+  @Override
+  public void saveNode(List<FlowableNode> nodes) {
+    for (FlowableNode node : nodes) {
+      saveNode(node);
+    }
+  }
+
+  @Override
+  public FlowableNode getNode(String nodeId) {
+    return nodes.get(nodeId);
+  }
+
+  @Override
+  public List<FlowableNode> listNodes() {
+    return new ArrayList<>(nodes.values());
+  }
+
+  @Override
+  public void saveInstance(FlowableInstance instance) {
+    instances.put(instance.getInstanceId(), instance);
+  }
+
+  @Override
+  public FlowableInstance getInstance(String instantId) {
+    return instances.getOrDefault(instantId, null);
+  }
+
+  @Override
+  public List<FlowableInstance> listInstances() {
+    return new ArrayList<>(instances.values());
+  }
+
+  @Override
+  public void saveHistory(FlowableHistory history) {
+    String instanceId = history.getInstanceId();
+    if (!histories.containsKey(instanceId)) {
+      histories.put(instanceId, new ArrayList<>());
+    }
+    histories.get(instanceId).add(history);
+  }
+
+  @Override
+  public FlowableHistory getHistory(String historyId) {
+    return histories.values()
+        .stream()
+        .flatMap(List::stream)
+        .filter(history -> StringHelper.equals(history.getHistoryId(), historyId))
+        .findFirst()
+        .orElse(null);
+  }
+  @Override
+  public List<FlowableHistory> listHistories(String instanceId) {
+    return histories.getOrDefault(instanceId, ListHelper.empty());
+  }
+
+  @Override
+  public void saveInstanceAndHistory(FlowableInstance instance, FlowableHistory history) {
+    saveInstance(instance);
+    saveHistory(history);
+  }
+}

flowable-core/src/test/java/com/lanyuanxiaoyao/flowable/core/SimpleFlowableManager.java

@@ -0,0 +1,14 @@
+package com.lanyuanxiaoyao.flowable.core;
+
+import com.lanyuanxiaoyao.flowable.core.manager.FlowableManager;
+import java.util.UUID;
+
+/**
+ * @author lanyuanxiaoyao
+ * @version 20241231
+ */
+public class SimpleFlowableManager extends FlowableManager {
+  public SimpleFlowableManager() {
+    super(new InMemoryFlowableRepository(), () -> UUID.randomUUID().toString());
+  }
+}

flowable-core/src/test/java/com/lanyuanxiaoyao/flowable/core/TestSimpleFlowableManager.java

@@ -0,0 +1,15 @@
+package com.lanyuanxiaoyao.flowable.core;
+
+import com.lanyuanxiaoyao.flowable.core.test.TestFlowableManager;
+import com.lanyuanxiaoyao.flowable.core.manager.FlowableManager;
+
+/**
+ * @author lanyuanxiaoyao
+ * @version 20250102
+ */
+public class TestSimpleFlowableManager extends TestFlowableManager {
+  @Override
+  protected FlowableManager flowableManager() {
+    return new SimpleFlowableManager();
+  }
+}