feat: support @RouteInfo byFunc

custom-plugin/src/main/java/org/bdware/consistency/plugin/sharding/MultiPointCooperationExecutor.java

@@ -1,5 +1,6 @@
 package org.bdware.consistency.plugin.sharding;
 
+import com.google.gson.JsonArray;
 import com.google.gson.JsonObject;
 import com.google.gson.JsonParser;
 import com.google.gson.JsonPrimitive;
@@ -7,6 +8,7 @@ import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
 import org.bdware.consistency.plugin.common.AbstractContextContractExecutor;
 import org.bdware.sc.ComponedContractResult;
+import org.bdware.sc.ContractClient;
 import org.bdware.sc.ContractMeta;
 import org.bdware.sc.ContractResult;
 import org.bdware.sc.bean.*;
@@ -20,10 +22,7 @@ import org.bdware.sc.util.JsonUtil;
 import org.bdware.server.trustedmodel.MultiReqSeq;
 
 import java.math.BigInteger;
-import java.util.HashMap;
-import java.util.HashSet;
-import java.util.Map;
-import java.util.Set;
+import java.util.*;
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.atomic.AtomicInteger;
 
@@ -123,6 +122,31 @@ public class MultiPointCooperationExecutor extends AbstractContextContractExecut
                         val = val + members.length;
                     }
                     return new String[]{members[val]};
+                case byFunc:
+                    ContractClient client = cmActions.getManager().getClient(req.getContractID());
+
+                    JsonArray membersArr = new JsonArray(members.length);
+                    for (String member : members) {
+                        membersArr.add(member);
+                    }
+
+                    JsonObject arg = new JsonObject();
+                    arg.addProperty("funcName", routeInfo.funcName);
+                    // func myFunc (currentNode, members, membersCount, sourceArg)
+                    JsonArray funcArgs = new JsonArray();
+                    funcArgs.add(globalConf.getNodeID());
+                    funcArgs.add(membersArr);
+                    funcArgs.add(membersArr.size());
+                    funcArgs.add(req.getArg());
+                    arg.add("funcArgs", funcArgs);
+
+                    String routeResultStr = client.executeMethod("", "invokeFunctionWithoutLimit", arg.toString());
+                    JsonObject routeResult = JsonUtil.parseString(routeResultStr).getAsJsonObject();
+                    List<String> nodes = new ArrayList<>();
+                    for (String key: routeResult.keySet()) {
+                        nodes.add(routeResult.get(key).getAsString());
+                    }
+                    return nodes.toArray(new String[]{});
                 default:
                     return members;
             }