feature: init Namingserver

common/src/main/java/org/apache/seata/common/Constants.java

@@ -204,4 +204,29 @@ public interface Constants {
      * The constant JACKSON_JSON_TEXT_PREFIX
      */
     String JACKSON_JSON_TEXT_PREFIX = "{\"@class\":";
+
+    /**
+     * The constant HTTP_PREFIX
+     */
+    String HTTP_PREFIX = "http://";
+
+    /**
+     * The constant HTTP_ADD_GROUP_SUFFIX
+     */
+    String HTTP_ADD_GROUP_SUFFIX = "/naming/v1/addVGroup?";
+
+    /**
+     * The constant CONSTANT_UNIT
+     */
+    String CONSTANT_UNIT = "unit";
+
+    /**
+     * The constant CONSTANT_GROUP
+     */
+    String CONSTANT_GROUP = "vGroup";
+
+    /**
+     * The constant HTTP_REMOVE_GROUP_SUFFIX
+     */
+    String HTTP_REMOVE_GROUP_SUFFIX = "/naming/v1/removeVGroup?";
 }

common/src/main/java/org/apache/seata/common/metadata/Cluster.java

@@ -0,0 +1,59 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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 org.apache.seata.common.metadata;
+
+import org.apache.seata.common.metadata.namingserver.Unit;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class Cluster {
+    private String clusterName;
+    private String clusterType;
+    private List<Unit> unitData = new ArrayList<>();
+
+    public Cluster() {
+    }
+
+    public String getClusterName() {
+        return clusterName;
+    }
+
+    public void setClusterName(String clusterName) {
+        this.clusterName = clusterName;
+    }
+
+    public String getClusterType() {
+        return clusterType;
+    }
+
+    public void setClusterType(String clusterType) {
+        this.clusterType = clusterType;
+    }
+
+    public List<Unit> getUnitData() {
+        return unitData;
+    }
+
+    public void setUnitData(List<Unit> unitData) {
+        this.unitData = unitData;
+    }
+
+
+}
+
+

common/src/main/java/org/apache/seata/common/metadata/Node.java

@@ -109,6 +109,12 @@ public Endpoint(String host, int port) {
             this.port = port;
         }
 
+        public Endpoint(String host, int port, String protocol) {
+            this.host = host;
+            this.port = port;
+            this.protocol = protocol;
+        }
+
         public String getHost() {
             return host;
         }

common/src/main/java/org/apache/seata/common/metadata/namingserver/Instance.java

@@ -0,0 +1,187 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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 org.apache.seata.common.metadata.namingserver;
+
+
+
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import org.apache.seata.common.metadata.ClusterRole;
+import org.apache.seata.common.metadata.Node;
+
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Objects;
+
+import static org.apache.seata.common.util.CollectionUtils.mapToJsonString;
+
+
+public class Instance {
+    private String namespace;
+    private String clusterName;
+    private String unit;
+    private Node.Endpoint controlEndpoint = new Node.Endpoint();
+    private Node.Endpoint transactionEndpoint = new Node.Endpoint();
+    private double weight = 1.0;
+    private boolean healthy = true;
+    private long term;
+    private ClusterRole role = ClusterRole.MEMBER;
+    private Map<String, Object> metadata = new HashMap<>();
+
+
+    private Instance() {
+    }
+
+    public static Instance getInstance() {
+        return SingletonHolder.SERVER_INSTANCE;
+    }
+
+
+    public String getNamespace() {
+        return namespace;
+    }
+
+    public void setNamespace(String namespace) {
+        this.namespace = namespace;
+    }
+
+    public String getClusterName() {
+        return clusterName;
+    }
+
+    public void setClusterName(String clusterName) {
+        this.clusterName = clusterName;
+    }
+
+    public String getUnit() {
+        return unit;
+    }
+
+    public void setUnit(String unit) {
+        this.unit = unit;
+    }
+
+    public ClusterRole getRole() {
+        return role;
+    }
+
+    public void setRole(ClusterRole role) {
+        this.role = role;
+    }
+
+    public Node.Endpoint getControlEndpoint() {
+        return controlEndpoint;
+    }
+
+    public void setControlEndpoint(Node.Endpoint controlEndpoint) {
+        this.controlEndpoint = controlEndpoint;
+    }
+
+    public Node.Endpoint getTransactionEndpoint() {
+        return transactionEndpoint;
+    }
+
+    public void setTransactionEndpoint(Node.Endpoint transactionEndpoint) {
+        this.transactionEndpoint = transactionEndpoint;
+    }
+
+    public double getWeight() {
+        return weight;
+    }
+
+    public void setWeight(double weight) {
+        this.weight = weight;
+    }
+
+    public boolean isHealthy() {
+        return healthy;
+    }
+
+    public void setHealthy(boolean healthy) {
+        this.healthy = healthy;
+    }
+
+    public long getTerm() {
+        return term;
+    }
+
+
+    public void setTerm(long term) {
+        this.term = term;
+    }
+
+    public void addMetadata(String key, Object value) {
+        this.metadata.put(key, value);
+    }
+
+    public void setMetadata(Map<String, Object> metadata) {
+        this.metadata = metadata;
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(controlEndpoint, transactionEndpoint);
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        }
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+        Instance instance = (Instance) o;
+        return Objects.equals(controlEndpoint, instance.controlEndpoint) && Objects.equals(transactionEndpoint, instance.transactionEndpoint);
+    }
+
+
+    // Recursively convert metadata to JSON
+    public String toJsonString() {
+        ObjectMapper objectMapper = new ObjectMapper();
+        try {
+            return objectMapper.writeValueAsString(this);
+        } catch (JsonProcessingException e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+
+    public Map<String, String> toMap() {
+        Map<String, String> resultMap = new HashMap<>();
+
+
+        resultMap.put("namespace", namespace);
+        resultMap.put("clusterName", clusterName);
+        resultMap.put("unit", unit);
+        resultMap.put("controlEndpoint", controlEndpoint.toString());
+        resultMap.put("transactionEndpoint", transactionEndpoint.toString());
+        resultMap.put("weight", String.valueOf(weight));
+        resultMap.put("healthy", String.valueOf(healthy));
+        resultMap.put("term", String.valueOf(term));
+        resultMap.put("metadata", mapToJsonString(metadata));
+
+        return resultMap;
+    }
+
+    private static class SingletonHolder {
+        private static final Instance SERVER_INSTANCE = new Instance();
+    }
+
+
+}
+

common/src/main/java/org/apache/seata/common/metadata/namingserver/MetaResponse.java

@@ -0,0 +1,50 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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 org.apache.seata.common.metadata.namingserver;
+
+import org.apache.seata.common.metadata.Cluster;
+
+import java.util.List;
+
+public class MetaResponse {
+    private List<Cluster> clusterList;
+    private long term;
+
+    public MetaResponse() {
+    }
+
+    public MetaResponse(List<Cluster> clusterList, long term) {
+        this.clusterList = clusterList;
+        this.term = term;
+    }
+
+    public List<Cluster> getClusterList() {
+        return clusterList;
+    }
+
+    public void setClusterList(List<Cluster> clusterList) {
+        this.clusterList = clusterList;
+    }
+
+    public long getTerm() {
+        return term;
+    }
+
+    public void setTerm(long term) {
+        this.term = term;
+    }
+}