Add NacosSkillRepository

agentscope-dependencies-bom/pom.xml

@@ -103,7 +103,7 @@
         <quartz.version>2.5.2</quartz.version>
         <spring.version>7.0.3</spring.version>
         <spring-boot.version>4.0.3</spring-boot.version>
-        <nacos-client.version>3.1.1</nacos-client.version>
+        <nacos-client.version>3.2.0-BETA</nacos-client.version>
         <json-schema-validator.version>3.0.0</json-schema-validator.version>
         <jsonschema-generator.version>4.38.0</jsonschema-generator.version>
         <snakeyaml.version>2.6</snakeyaml.version>

agentscope-distribution/agentscope-all/pom.xml

@@ -207,6 +207,13 @@
             <optional>true</optional>
         </dependency>
 
+        <dependency>
+            <groupId>io.agentscope</groupId>
+            <artifactId>agentscope-extensions-nacos-skill</artifactId>
+            <scope>compile</scope>
+            <optional>true</optional>
+        </dependency>
+
         <dependency>
             <groupId>io.agentscope</groupId>
             <artifactId>agentscope-extensions-skill-git-repository</artifactId>

agentscope-distribution/agentscope-bom/pom.xml

@@ -282,6 +282,12 @@
                 <version>${project.version}</version>
             </dependency>
 
+            <dependency>
+                <groupId>io.agentscope</groupId>
+                <artifactId>agentscope-extensions-nacos-skill</artifactId>
+                <version>${project.version}</version>
+            </dependency>
+
             <!-- AgentScope Nacos Spring Boot Starter -->
             <dependency>
                 <groupId>io.agentscope</groupId>

agentscope-extensions/agentscope-extensions-nacos/agentscope-extensions-nacos-skill/pom.xml

@@ -0,0 +1,47 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  ~ Copyright 2024-2026 the original author or 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.
+  -->
+
+<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">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <groupId>io.agentscope</groupId>
+        <artifactId>agentscope-extensions-nacos</artifactId>
+        <version>${revision}</version>
+        <relativePath>../pom.xml</relativePath>
+    </parent>
+
+    <artifactId>agentscope-extensions-nacos-skill</artifactId>
+    <name>AgentScope Java - Nacos A2A skill</name>
+    <description>agentscope-extensions-nacos-skill</description>
+
+    <dependencies>
+        <!-- Core library is needed at runtime for AgentSkillRepository, AgentSkill, etc. -->
+        <dependency>
+            <groupId>io.agentscope</groupId>
+            <artifactId>agentscope-core</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>com.alibaba.nacos</groupId>
+            <artifactId>nacos-client</artifactId>
+        </dependency>
+
+    </dependencies>
+
+</project>

agentscope-extensions/agentscope-extensions-nacos/agentscope-extensions-nacos-skill/src/main/java/io/agentscope/core/nacos/skill/NacosSkillRepository.java

@@ -0,0 +1,153 @@
+/*
+ * Copyright 2024-2026 the original author or 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.agentscope.core.nacos.skill;
+
+import com.alibaba.nacos.api.ai.AiService;
+import com.alibaba.nacos.api.ai.model.skills.Skill;
+import com.alibaba.nacos.api.exception.NacosException;
+import com.alibaba.nacos.common.utils.StringUtils;
+import io.agentscope.core.skill.AgentSkill;
+import io.agentscope.core.skill.repository.AgentSkillRepository;
+import io.agentscope.core.skill.repository.AgentSkillRepositoryInfo;
+import java.util.List;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * Nacos-based implementation of {@link AgentSkillRepository}.
+ *
+ * <p>Reads skills from Nacos Config via {@code AiService.loadSkill(String)}. This implementation
+ * currently supports only read operations: {@link #getSkill(String)}, {@link #skillExists(String)},
+ * {@link #getRepositoryInfo()}, {@link #getSource()}, and {@link #isWriteable()}. List and write
+ * operations are not implemented.
+ */
+public class NacosSkillRepository implements AgentSkillRepository {
+
+    private static final Logger log = LoggerFactory.getLogger(NacosSkillRepository.class);
+
+    private static final String REPO_TYPE = "nacos";
+    private static final String LOCATION_PREFIX = "namespace:";
+
+    private final AiService aiService;
+    private final String namespaceId;
+    private final String source;
+    private final String location;
+    private boolean writeable;
+
+    /**
+     * Creates a Nacos skill repository.
+     *
+     * @param aiService   the Nacos AI service (must not be null)
+     * @param namespaceId the Nacos namespace ID (null or blank is treated as default namespace)
+     */
+    public NacosSkillRepository(AiService aiService, String namespaceId) {
+        if (aiService == null) {
+            throw new IllegalArgumentException("AiService cannot be null");
+        }
+        this.aiService = aiService;
+        this.namespaceId = StringUtils.isBlank(namespaceId) ? "public" : namespaceId.trim();
+        this.source = REPO_TYPE + ":" + this.namespaceId;
+        this.location = LOCATION_PREFIX + this.namespaceId;
+        this.writeable = false;
+        log.info("NacosSkillRepository initialized for namespace: {}", this.namespaceId);
+    }
+
+    @Override
+    public AgentSkill getSkill(String name) {
+        if (name == null || name.isBlank()) {
+            throw new IllegalArgumentException("Skill name cannot be null or empty");
+        }
+        try {
+            Skill nacosSkill = aiService.loadSkill(name.trim());
+            if (nacosSkill == null) {
+                throw new IllegalArgumentException("Skill not found: " + name);
+            }
+            return NacosSkillToAgentSkillConverter.toAgentSkill(nacosSkill, getSource());
+        } catch (NacosException e) {
+            if (e.getErrCode() == NacosException.NOT_FOUND) {
+                throw new IllegalArgumentException("Skill not found: " + name, e);
+            }
+            throw new RuntimeException("Failed to load skill from Nacos: " + name, e);
+        }
+    }
+
+    @Override
+    public boolean skillExists(String skillName) {
+        if (skillName == null || skillName.isBlank()) {
+            return false;
+        }
+        try {
+            Skill skill = aiService.loadSkill(skillName.trim());
+            return skill != null;
+        } catch (NacosException e) {
+            if (e.getErrCode() == NacosException.NOT_FOUND) {
+                return false;
+            }
+            log.warn("Error checking skill existence for {}: {}", skillName, e.getMessage());
+            return false;
+        }
+    }
+
+    @Override
+    public AgentSkillRepositoryInfo getRepositoryInfo() {
+        return new AgentSkillRepositoryInfo(REPO_TYPE, location, writeable);
+    }
+
+    @Override
+    public String getSource() {
+        return source;
+    }
+
+    @Override
+    public void setWriteable(boolean writeable) {
+        this.writeable = writeable;
+    }
+
+    @Override
+    public boolean isWriteable() {
+        return writeable;
+    }
+
+    // ---------- Unsupported operations (list and write) ----------
+
+    @Override
+    public List<String> getAllSkillNames() {
+        throw new UnsupportedOperationException(
+                "getAllSkillNames is not implemented for NacosSkillRepository");
+    }
+
+    @Override
+    public List<AgentSkill> getAllSkills() {
+        throw new UnsupportedOperationException(
+                "getAllSkills is not implemented for NacosSkillRepository");
+    }
+
+    @Override
+    public boolean save(List<AgentSkill> skills, boolean force) {
+        throw new UnsupportedOperationException("save is not implemented for NacosSkillRepository");
+    }
+
+    @Override
+    public boolean delete(String skillName) {
+        throw new UnsupportedOperationException(
+                "delete is not implemented for NacosSkillRepository");
+    }
+
+    @Override
+    public void close() {
+        // AiService lifecycle is managed by the caller; nothing to release here
+    }
+}

agentscope-extensions/agentscope-extensions-nacos/agentscope-extensions-nacos-skill/src/main/java/io/agentscope/core/nacos/skill/NacosSkillToAgentSkillConverter.java

@@ -0,0 +1,69 @@
+/*
+ * Copyright 2024-2026 the original author or 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.agentscope.core.nacos.skill;
+
+import com.alibaba.nacos.api.ai.model.skills.Skill;
+import com.alibaba.nacos.api.ai.model.skills.SkillResource;
+import io.agentscope.core.skill.AgentSkill;
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ * Converts Nacos AI {@link Skill} to AgentScope {@link AgentSkill}.
+ */
+public final class NacosSkillToAgentSkillConverter {
+
+    private static final String NO_DESCRIPTION = "(no description)";
+    private static final String NO_INSTRUCTION = "(no instruction)";
+
+    private NacosSkillToAgentSkillConverter() {}
+
+    /**
+     * Converts a Nacos Skill to an AgentSkill.
+     *
+     * @param nacosSkill the Nacos Skill (must not be null)
+     * @param source     the source identifier for the resulting AgentSkill (e.g. "nacos:public")
+     * @return the converted AgentSkill
+     */
+    public static AgentSkill toAgentSkill(Skill nacosSkill, String source) {
+        if (nacosSkill == null) {
+            throw new IllegalArgumentException("Nacos Skill cannot be null");
+        }
+        String name = blankToDefault(nacosSkill.getName(), "unknown");
+        String description = blankToDefault(nacosSkill.getDescription(), NO_DESCRIPTION);
+        String skillContent = blankToDefault(nacosSkill.getInstruction(), NO_INSTRUCTION);
+        Map<String, String> resources = toResourceMap(nacosSkill.getResource());
+        return new AgentSkill(name, description, skillContent, resources, source);
+    }
+
+    private static String blankToDefault(String value, String defaultValue) {
+        return (value != null && !value.isBlank()) ? value.trim() : defaultValue;
+    }
+
+    private static Map<String, String> toResourceMap(Map<String, SkillResource> resourceMap) {
+        if (resourceMap == null || resourceMap.isEmpty()) {
+            return new HashMap<>();
+        }
+        Map<String, String> result = new HashMap<>(resourceMap.size());
+        for (Map.Entry<String, SkillResource> e : resourceMap.entrySet()) {
+            String key = e.getKey() != null ? e.getKey() : "resource";
+            SkillResource res = e.getValue();
+            String content = (res != null && res.getContent() != null) ? res.getContent() : "";
+            result.put(key, content);
+        }
+        return result;
+    }
+}

agentscope-extensions/agentscope-extensions-nacos/pom.xml

@@ -34,6 +34,7 @@
     <modules>
         <module>agentscope-extensions-nacos-a2a</module>
         <module>agentscope-extensions-nacos-prompt</module>
+        <module>agentscope-extensions-nacos-skill</module>
     </modules>
 
 </project>