optimize logs

prune unused functions in ContractManager

build.gradle

@@ -2,7 +2,10 @@ plugins {
     id 'java'
     id 'java-library'
 }
-
+apply from: '../spotless.gradle'
+repositories {
+    mavenCentral()
+}
 sourceSets {
     main {
         java {
@@ -24,14 +27,10 @@ sourceSets {
 
 sourceCompatibility = 1.8
 
-repositories {
-    mavenCentral()
-}
-
 dependencies {
     api project(":common")
     api 'io.prometheus:simpleclient:0.12.0'
-    api 'org.knowhowlab.osgi:sigar:1.6.5_01'
-    api fileTree(dir: 'libs', include: '*.jar')
+    api 'org.hyperic.sigar:sigar:1.6.4'
+    api 'com.github.ben-manes.caffeine:caffeine:2.8.8'
     testImplementation 'junit:junit:4.13.2'
 }

src/main/java/org/bdware/sc/ChainOpener.java

@@ -1,32 +1,22 @@
 package org.bdware.sc;
 
+import com.google.gson.JsonElement;
 import org.bdware.sc.bean.ContractRequest;
 import org.bdware.sc.conn.OnHashCallback;
 
 public interface ChainOpener {
     void reRegister(String doid);
+
     String register(String arg);
 
-    void writeContractResultToLocalAndLedger(
-            String result,
-            ContractClient client,
-            ContractRequest contractRequest,
-            OnHashCallback cb, long start, long l);
+    void writeContractResultToLocalAndLedger(String result, ContractClient client,
+            ContractRequest contractRequest, OnHashCallback cb, long start, long l);
 
-    void writeToChain(
-            OnHashCallback cb,
-            String from,
-            String to,
-            String data,
-            String requestID,
+    void writeToChain(OnHashCallback cb, String from, String to, String data, String requestID,
             String namedLedger);
 
-    void writeToChainWithContract(
-            OnHashCallback cb,
-            String from,
-            String to,
-            String data,
-            String requestID,
-            String contractID,
-            String namedLedger);
+    void writeToChainWithContract(OnHashCallback cb, String from, String to, String data,
+            String requestID, String contractID, String namedLedger);
+
+    JsonElement getLedgerParams();
 }

src/main/java/org/bdware/sc/ContractClient.java

@@ -18,11 +18,13 @@ import org.bdware.sc.encrypt.HardwareInfo.OSType;
 import org.bdware.sc.event.REvent.REventSemantics;
 import org.bdware.sc.node.AnnotationNode;
 import org.bdware.sc.node.YjsType;
+import org.bdware.sc.units.MultiContractMeta;
 import org.bdware.sc.util.JsonUtil;
 
-import java.io.ByteArrayOutputStream;
 import java.io.File;
+import java.io.InputStream;
 import java.io.PrintStream;
+import java.lang.reflect.Constructor;
 import java.lang.reflect.Field;
 import java.util.*;
 
@@ -30,7 +32,6 @@ public class ContractClient {
     private static final Logger LOGGER = LogManager.getLogger(ContractClient.class);
     public static String cmi = "";
     public ContractMeta contractMeta;
-    public boolean isDebug;
     transient SocketGet get;
     int port;
     String pid;
@@ -67,10 +68,14 @@ public class ContractClient {
         isRunning = false;
     }
 
+    public ContractClient(int startPort) {
+        this("127.0.0.1", startPort);
+    }
+
     // Once the reconnect is called, all cp in the same node will reconnect to
     // current ContractManager
     // We only consider the.
-    public ContractClient(int startPort) {
+    public ContractClient(String host, int startPort) {
         // LOGGER.info("ContractClient 构造器 : ");
         contractMeta = new ContractMeta();
         outputTracer = new ContractPrinter();
@@ -82,7 +87,7 @@ public class ContractClient {
         port = startPort;
         // LOGGER.info("ContractClient----构造器----- 端口 " + startPort);
 
-        get = new SocketGet("127.0.0.1", startPort);
+        get = new SocketGet(host, startPort);
         // LOGGER.info("ContractClient----构造器----- position---2");
 
         String cpCMI = get.syncGet("", "isContractProcess", ""); // CMI
@@ -128,26 +133,21 @@ public class ContractClient {
     }
 
     private void initProps() {
-        // LOGGER.info("initProps  ----  position-----1");
+        LOGGER.info("initProps ---- position-----1");
         contractMeta.name = get.syncGet("", "getContractName", "");
-        // LOGGER.info("initProps  ----  position-----2");
+        LOGGER.info("initProps ---- position-----2");
         String strEvent = get.syncGet("", "getDeclaredEvents", "");
         LOGGER.debug("event: " + strEvent);
-        contractMeta.declaredEvents =
-                JsonUtil.fromJson(
-                        strEvent, new TypeToken<Map<String, REventSemantics>>() {
-                        }.getType());
-        // LOGGER.info("initProps  ----  position-----3");
-        contractMeta.dependentContracts = JsonUtil.fromJson(
-                get.syncGet("", "getDependentContracts", ""),
-                new TypeToken<Set<String>>() {
-                }.getType());
-        // LOGGER.info("initProps  ----  position-----4");
+        contractMeta.declaredEvents = JsonUtil.fromJson(strEvent,
+                new TypeToken<Map<String, REventSemantics>>() {}.getType());
+        LOGGER.info("initProps ---- position-----3");
+        contractMeta.dependentContracts =
+                JsonUtil.fromJson(get.syncGet("", "getDependentContracts", ""),
+                        new TypeToken<Set<String>>() {}.getType());
+        LOGGER.info("initProps ---- position-----4");
         contractMeta.exportedFunctions =
-                JsonUtil.fromJson(
-                        get.syncGet("", "getExportedFunctions", ""),
-                        new TypeToken<List<FunctionDesp>>() {
-                        }.getType());
+                JsonUtil.fromJson(get.syncGet("", "getExportedFunctions", ""),
+                        new TypeToken<List<FunctionDesp>>() {}.getType());
         contractMeta.logDetail = new HashMap<>();
         for (FunctionDesp func : contractMeta.exportedFunctions) {
             StringBuilder str = new StringBuilder();
@@ -159,8 +159,7 @@ public class ContractClient {
                 }
                 if (anno.getType().equals("LogLocation")) {
                     for (String logLoc : anno.getArgs()) {
-                        if (logLoc.equals("\"dataware\"")
-                                || logLoc.equals("\"bdledger\"")
+                        if (logLoc.equals("\"dataware\"") || logLoc.equals("\"bdledger\"")
                                 || logLoc.equals("\"bdledger:\"")) {
                             str.append("bdcontract;");
                         } else if (logLoc.startsWith("\"bdledger:") && logLoc.length() > 11) {
@@ -173,54 +172,47 @@ public class ContractClient {
             }
             contractMeta.logDetail.put(func.functionName, str.toString());
         }
-        // LOGGER.info("initProps  ----  position-----5");
+        LOGGER.info("initProps ---- position-----5");
         try {
 
             String anno = get.syncGet("", "getAnnotations", "");
             contractMeta.annotations =
-                    JsonUtil.fromJson(anno, new TypeToken<List<AnnotationNode>>() {
-                    }.getType());
+                    JsonUtil.fromJson(anno, new TypeToken<List<AnnotationNode>>() {}.getType());
 
         } catch (Exception e) {
             // supoort contract process before version 0.70
             contractMeta.annotations = new ArrayList<>();
         }
-        // LOGGER.info("initProps  ----  position-----6");
+        LOGGER.info("initProps ---- position-----6");
         contractMeta.sigRequired = Boolean.parseBoolean(get.syncGet("", "isSigRequired", ""));
-        // LOGGER.info("initProps  ----  position-----7");
+        LOGGER.info("initProps ---- position-----7");
         contractMeta.thisPermission = get.syncGet("", "showPermission", "");
-        // LOGGER.info("initProps  ----  position-----8");
+        LOGGER.info("initProps ---- position-----8");
         isRunning = true;
-        contractMeta.isDebug = Boolean.parseBoolean(get.syncGet("", "getDebug", ""));
-        // LOGGER.info("initProps  ----  position-----9");
+        LOGGER.info("initProps ---- position-----9");
         get.syncGet("", "registerMangerPort", ContractManager.cPort.getCMPort() + "");
         contractMeta.contract =
                 JsonUtil.fromJson(get.syncGet("", "getContract", ""), Contract.class);
         contractMeta.id = contractMeta.contract.getID();
-        get.setOfflineExceptionHandler(
-                new SocketGet.OfflineHandler() {
+        get.setOfflineExceptionHandler(new SocketGet.OfflineHandler() {
             @Override
             public void onException(SocketGet socketGet, Exception e) {
                 if (e.getMessage().contains("Connection refused")) {
                     contractMeta.status = ContractStatusEnum.HANGED;
-                            ContractManager.instance.statusRecorder.resumeContractProcess(
-                                    contractMeta.id);
+                    ContractManager.instance.statusRecorder.resumeContractProcess(contractMeta.id);
                 }
             }
         });
         loadTimesAndTraffic();
-        // LOGGER.info("initProps  ----  position-----10");
-        // LOGGER.debug("======= registerPort:" + ret + "-->" + ContractManager.startPort);
+        LOGGER.info("initProps ---- position-----10 DONE!");
     }
 
-    public String startProcess(PrintStream ps) {
+    public String startProcess(PrintStream ps) throws Exception {
         isRunning = false;
         port = -1;
-
         String darg = "-Djava.library.path=";
         String classpath;
         File jniPath;
-
         if (ContractManager.yjsPath == null) {
             jniPath = new File("./jni/");
             classpath = System.getProperty("java.class.path");
@@ -228,60 +220,64 @@ public class ContractClient {
             classpath = ContractManager.yjsPath;
             jniPath = new File(classpath).getParentFile();
         }
-
         String osJni = ((HardwareInfo.type == OSType.linux) ? "/jni/linux" : "/jni/mac");
         darg += jniPath.getAbsolutePath() + osJni;
         if (!new File(classpath).exists()) {
-            ContractResult r =
-                    new ContractResult(
-                            Status.Exception, new JsonPrimitive("incorrect path: yjs.jar"));
+            ContractResult r = new ContractResult(Status.Exception,
+                    new JsonPrimitive("incorrect path: yjs.jar"));
             return JsonUtil.toJson(r);
         }
         if (!new File(jniPath, "libs").exists()) {
-            ContractResult r =
-                    new ContractResult(
-                            Status.Exception,
+            ContractResult r = new ContractResult(Status.Exception,
                     new JsonPrimitive("incorrect path: yjs.jar, missing libs"));
             return JsonUtil.toJson(r);
         }
-        //        ProcessBuilder builder =
-        //                new ProcessBuilder(
-        //                        "java",
-        //                        "-Dfile.encoding=UTF-8",
-        //                        darg,
-        //                        "-cp",
-        //                        jniPath.getAbsolutePath() + "/libs/*:" + classpath,
-        //                        "org.bdware.sc.ContractProcess",
-        //                        "-port=" + cPort.getPort());
         int startPort = ContractManager.cPort.getPortAndInc();
-        ProcessBuilder builder =
-                new ProcessBuilder(
-                        "java",
-                        "-Dfile.encoding=UTF-8",
-                        darg,
-                        "-jar",
-                        classpath,
-                        "-port=" + startPort,
-                        "-cmi=" + cmi, // cmi 区分不同CM的cp
-                        (isDebug ? "-debug" : ""));
-        File directory = new File("");
+        List<String> pbParameters = new ArrayList<>();
+        pbParameters.add("java");
+        pbParameters.add("-Dfile.encoding=UTF-8");
+        pbParameters.add(darg);
+        if (contractMeta.contract.getRemoteDebugPort() != 0) {
+            pbParameters.add(String.format(
+                    "-agentlib:jdwp=transport=dt_socket,address=%d,server=y,suspend=n",
+                    contractMeta.contract.getRemoteDebugPort()));
+        }
+        File classParent = new File(classpath).getParentFile();
+        if (contractMeta.contract.isDebug()) {
+            pbParameters.add("-Dlog4j.configurationFile="
+                    + new File(classParent, "log4j2.debug.properties").getAbsolutePath());
+        } else {
+            pbParameters.add("-Dlog4j.configurationFile="
+                    + new File(classParent, "log4j2.properties").getAbsolutePath());
+        }
+        pbParameters.add("-jar");
+        pbParameters.add(classpath);
+        pbParameters.add("-port=" + startPort);
+        pbParameters.add("-cmi=" + cmi);
+        if (contractMeta.contract.isDebug())
+            pbParameters.add("-debug");
+        ProcessBuilder builder;
+        String[] result = new String[pbParameters.size()];
+        pbParameters.toArray(result);
+        Constructor<ProcessBuilder> pbc =
+                ProcessBuilder.class.getDeclaredConstructor(String[].class);
+        builder = pbc.newInstance(new Object[] {result});
+
+        File directory = new File("./");
         LOGGER.debug("[CMD] path: " + directory.getAbsolutePath());
         LOGGER.debug(JsonUtil.toPrettyJson(builder.command()));
-
         Map<String, String> map = builder.environment();
         map.put("java.library.path", jniPath.getAbsolutePath() + osJni);
-        builder.directory(new File("./"));
+        builder.directory(directory);
         LOGGER.debug("start process:");
-
-        try {
         process = builder.start();
-
         this.pid = getPid(process);
         LOGGER.info("[CP PPID] " + pid);
         PrintStream printStream = new PrintStream(process.getOutputStream());
         printStream.println("CP PID:" + pid);
         printStream.close();
-            Scanner sc = new Scanner(process.getInputStream());
+        InputStream processInputStream = process.getInputStream();
+        Scanner sc = new Scanner(processInputStream);
         String status = null;
         while (sc.hasNext()) {
             status = sc.nextLine();
@@ -290,10 +286,8 @@ public class ContractClient {
                 try {
                     // Set contractPort to max(mainPort, contractPort)
                     int portIndex = status.indexOf("mainPort");
-                        int port =
-                                Integer.parseInt(
-                                        status.substring(portIndex + 9, portIndex + 14)
-                                                .replaceAll("\\s+", ""));
+                    int port = Integer.parseInt(
+                            status.substring(portIndex + 9, portIndex + 14).replaceAll("\\s+", ""));
                     if (port != startPort) {
                         ContractManager.cPort.reSetPort(port + 1);
                     }
@@ -311,39 +305,52 @@ public class ContractClient {
         ContractManager.cPort.updateDb(port, true);
         get = new SocketGet("127.0.0.1", port);
         get.syncGet("", "setDBInfo", ContractManager.dbPath);
-            String tagA = (ps == System.out ? "[Contract_" + port + "_out] " : "");
-            String tagB = (ps == System.out ? "[Contract_" + port + "_err] " : "");
+        if (contractMeta.contract.isDebug() || get != null) {
+            String tagA = (ps instanceof LoggerPrintStream ? "[Contract_" + port + "_out] " : "");
+            String tagB = (ps instanceof LoggerPrintStream ? "[Contract_" + port + "_err] " : "");
             outputTracer.track(process, sc, tagA, ps);
             errorTracer.track(process, new Scanner(process.getErrorStream()), tagB, ps);
+        } else {
+            // 关闭流，否则缓冲区打满会阻塞进程
+            processInputStream.close();
+            sc.close();
+        }
         get.syncGet("", "registerMangerPort", String.valueOf(ContractManager.cPort.getCMPort()));
 
+        MultiContractMeta multiContractMeta = ContractManager.instance.multiContractRecorder
+                .getMultiContractMeta(contractMeta.getID());
+        if (multiContractMeta != null && multiContractMeta.getMembers() != null) {
+            String setMemberResult =
+                    get.syncGet("", "setMembers", JsonUtil.toJson(multiContractMeta.getMembers()));
+            LOGGER.info("setMember:" + setMemberResult);
+        } else {
+            LOGGER.info("setMember ignore, meta:" + (multiContractMeta == null)
+                    + (multiContractMeta == null ? "NULL"
+                            : " members:" + multiContractMeta.getMembers()));
+        }
+
         if (isBundlePath(contractMeta.contract.getScriptStr())) {
-                status =
-                        get.syncGet(
-                                "", "setContractBundle", JsonUtil.toJson(contractMeta.contract));
+            status = get.syncGet("", "setContractBundle", JsonUtil.toJson(contractMeta.contract));
         } else {
             status = get.syncGet("", "setContract", JsonUtil.toJson(contractMeta.contract));
         }
-            LOGGER.debug("port:" + port + " status:" + status);
+        LOGGER.info("start status, port:" + port + " status:" + status);
         ContractResult r = JsonUtil.fromJson(status, ContractResult.class);
         if (r.status == Status.Success) {
+            LOGGER.info("init prop start!");
             initProps();
+            LOGGER.info("init prop done!");
             get.syncGet("", "setPID", pid);
-            } else if (r.status == null) {
+        } else {
+            LOGGER.info("kill contract");
+            if (r.status == null) {
                 r.status = Status.Error;
                 r.result = new JsonPrimitive(status);
-                status = JsonUtil.toJson(r);
-                contractMeta.name = get.syncGet("", "getContractName", "");
+            }
+            killProcess();
+            throw new IllegalStateException(r.result.getAsString());
         }
         return status;
-        } catch (Exception e) {
-            e.printStackTrace();
-            ByteArrayOutputStream bo = new ByteArrayOutputStream();
-            e.printStackTrace(new PrintStream(bo));
-            ContractResult r =
-                    new ContractResult(Status.Exception, new JsonPrimitive(bo.toString()));
-            return JsonUtil.toJson(r);
-        }
     }
 
     public void updateMemory() {
@@ -352,11 +359,7 @@ public class ContractClient {
                 return;
             }
             lastUpdate = System.currentTimeMillis();
-            get.asyncGet(
-                    "",
-                    ".UsedMemory",
-                    "",
-                    new ResultCallback() {
+            get.asyncGet("", ".UsedMemory", "", new ResultCallback() {
                 @Override
                 public void onResult(String str) {
                     memory = Long.parseLong(str);
@@ -375,17 +378,8 @@ public class ContractClient {
         return contractMeta.getExportedFunctions();
     }
 
-    public String getIdentifier() {
-        return get.syncGet("", "getIdentifier", " ");
-    }
-
-    public void setIdentifier(String alias) {
-        get.asyncGet("", "setIdentifier", alias, null);
-    }
-
-
-    public String signResult(String result) {
-        return contractMeta.contract.signResult(result);
+    public String executeMethod(String pkgName, String method, String arg) {
+        return get.syncGet(pkgName, method, arg);
     }
 
     public String getPubkey() {
@@ -400,10 +394,6 @@ public class ContractClient {
         return contractMeta.name;
     }
 
-    public String getContractDOI() {
-        return contractMeta.contract.getDOI();
-    }
-
     public String getContractKey() {
         return contractMeta.contract.getKey();
     }
@@ -428,10 +418,6 @@ public class ContractClient {
         return contractMeta.logDetail.get(action);
     }
 
-    public boolean isDebug() {
-        return contractMeta.isDebug;
-    }
-
     public long getTimes() {
         return times;
     }
@@ -457,12 +443,10 @@ public class ContractClient {
     }
 
     public void loadTimesAndTraffic() {
-        String tempTime2 =
-                KeyValueDBUtil.instance.getValue(
-                        CMTables.ContractInfo.toString(), contractMeta.name + "-Times");
-        String tempTraffic2 =
-                KeyValueDBUtil.instance.getValue(
-                        CMTables.ContractInfo.toString(), contractMeta.name + "-Traffic");
+        String tempTime2 = KeyValueDBUtil.instance.getValue(CMTables.ContractInfo.toString(),
+                contractMeta.name + "-Times");
+        String tempTraffic2 = KeyValueDBUtil.instance.getValue(CMTables.ContractInfo.toString(),
+                contractMeta.name + "-Traffic");
         if (tempTime2 != null && !tempTime2.equals("")) {
             times = Long.parseLong(tempTime2);
         }
@@ -472,10 +456,10 @@ public class ContractClient {
     }
 
     public void saveTimesAndTraffic() {
-        KeyValueDBUtil.instance.setValue(
-                CMTables.ContractInfo.toString(), contractMeta.name + "-Times", times + "");
-        KeyValueDBUtil.instance.setValue(
-                CMTables.ContractInfo.toString(), contractMeta.name + "-Traffic", traffic + "");
+        KeyValueDBUtil.instance.setValue(CMTables.ContractInfo.toString(),
+                contractMeta.name + "-Times", times + "");
+        KeyValueDBUtil.instance.setValue(CMTables.ContractInfo.toString(),
+                contractMeta.name + "-Traffic", traffic + "");
     }
 
     public void setMask(JsonObject args) {

src/main/java/org/bdware/sc/ContractMeta.java

@@ -1,5 +1,7 @@
 package org.bdware.sc;
 
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
 import org.bdware.sc.bean.Contract;
 import org.bdware.sc.bean.FunctionDesp;
 import org.bdware.sc.bean.IDSerializable;
@@ -20,7 +22,6 @@ public class ContractMeta implements IDSerializable {
     ContractStatusEnum status;
     String name;
     String id;
-    boolean isDebug;
     Map<String, REvent.REventSemantics> declaredEvents;
     List<FunctionDesp> exportedFunctions;
     Map<String, String> logDetail;
@@ -30,14 +31,7 @@ public class ContractMeta implements IDSerializable {
     boolean sigRequired;
     String thisPermission; // 合约当前权限
     /*
-    {
-       "name": "dx_substr",
-       "parameter":
-       {
-           "columnIndex":5,
-           "paras":["1","3"]
-       }
-    },
+     * { "name": "dx_substr", "parameter": { "columnIndex":5, "paras":["1","3"] } },
      */
     // Map<Object,Object>MaskInfo;
 
@@ -96,7 +90,7 @@ public class ContractMeta implements IDSerializable {
     // public setMask(){}
 
     public boolean getIsDebug() {
-        return isDebug;
+        return contract.isDebug();
     }
 
     public FunctionDesp getExportedFunction(String action) {
@@ -115,7 +109,8 @@ public class ContractMeta implements IDSerializable {
 
     private FunctionDesp seekFunction(String action) {
         for (FunctionDesp desp : exportedFunctions) {
-            if (desp != null && desp.functionName.equals(action)) return desp;
+            if (desp != null && desp.functionName.equals(action))
+                return desp;
         }
         return null;
     }
@@ -124,9 +119,10 @@ public class ContractMeta implements IDSerializable {
         contract = c;
         id = c.getID();
         status = ContractStatusEnum.HANGED;
-        isDebug = false;
     }
 
+    static Logger LOGGER = LogManager.getLogger(ContractMeta.class);
+
     public void setContractExecutor(ContractExecutor executor) {
         this.contractExecutor = executor;
     }

src/main/java/org/bdware/sc/ContractStatusEnum.java

@@ -1,10 +1,8 @@
 package org.bdware.sc;
 
 public enum ContractStatusEnum {
-    INIT(0, "初始化"),
-    RUNNING(1, "内存运行中"),
-    HANGED(2, "硬盘运行中"),
-    KILLED(3, "已停止");
+    INIT(0, "初始化"), RUNNING(1, "内存运行中"), HANGED(2, "硬盘运行中"), KILLED(3, "已停止");
+
     private Integer code;
     private String desc;
 

src/main/java/org/bdware/sc/ContractStatusRecorder.java

@@ -33,8 +33,7 @@ public class ContractStatusRecorder extends StatusRecorder<ContractMeta> {
     static {
         final Object flag = new Object();
         // 调度一个task，在delay（ms）后开始调度，每次调度完后，最少等待period（ms）后才开始调
-        ContractManager.scheduledThreadPool.scheduleWithFixedDelay(
-                () -> {
+        ContractManager.scheduledThreadPool.scheduleWithFixedDelay(() -> {
             boolean cleared = dealTimerContractProcess();
             if (cleared) {
                 synchronized (flag) {
@@ -45,10 +44,7 @@ public class ContractStatusRecorder extends StatusRecorder<ContractMeta> {
                     }
                 }
             }
-                },
-                0,
-                1,
-                TimeUnit.SECONDS);
+        }, 0, 1, TimeUnit.SECONDS);
     }
 
     // contract id to client, changes when some contract is started/stopped/resumed
@@ -102,7 +98,8 @@ public class ContractStatusRecorder extends StatusRecorder<ContractMeta> {
         // TODO 是不是还有别的？这只是在内存里的哦。
         try {
             for (ContractClient c : id2ContractClient.values()) {
-                if (Integer.parseInt(c.getPID()) == pid) return true;
+                if (Integer.parseInt(c.getPID()) == pid)
+                    return true;
             }
         } catch (Exception e) {
             // e.printStackTrace();
@@ -174,17 +171,23 @@ public class ContractStatusRecorder extends StatusRecorder<ContractMeta> {
 
     // TODO index name to contract
     public ContractMeta getContractMeta(String idOrNameOrDOI) {
-        if (idOrNameOrDOI == null) return null;
+        if (idOrNameOrDOI == null)
+            return null;
         ContractMeta meta = getStatus().get(idOrNameOrDOI);
-        if (meta != null) return meta;
+        if (meta != null)
+            return meta;
         for (ContractMeta cc : getStatus().values()) {
             if (cc.status == ContractStatusEnum.RUNNING || cc.status == ContractStatusEnum.HANGED)
-                if (idOrNameOrDOI.equals(cc.name) || idOrNameOrDOI.equals(cc.contract.getDOI())) {
+                if (idOrNameOrDOI.equals(cc.name)) {
                     return cc;
                 }
         }
         for (ContractMeta cc : getStatus().values()) {
-            if (idOrNameOrDOI.equals(cc.name) || idOrNameOrDOI.equals(cc.contract.getDOI())) {
+            if (cc.name == null)
+                continue;
+            if (cc.contract == null)
+                continue;
+            if (idOrNameOrDOI.equals(cc.name)) {
                 return cc;
             }
         }
@@ -222,9 +225,7 @@ public class ContractStatusRecorder extends StatusRecorder<ContractMeta> {
                 LOGGER.info("need dump when stop");
                 String contractName = client.getContractName();
                 SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd.HH:mm:ss");
-                File f =
-                        new File(
-                                ContractManager.dir + "/memory/" + contractName,
+                File f = new File(ContractManager.dir + "/memory/" + contractName,
                         df.format(new Date()));
                 client.get.syncGet("", "getMemoryDump", f.getAbsolutePath());
                 ContractManager.instance.addLocalContractLog("dumpContract", meta);
@@ -311,13 +312,12 @@ public class ContractStatusRecorder extends StatusRecorder<ContractMeta> {
                 client.saveTimesAndTraffic();
 
                 SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd.HH_mm_ss"); // 设置日期格式
-                File f =
-                        new File(
-                                ContractManager.dir + "/memory/" + contractMeta.name,
+                File f = new File(ContractManager.dir + "/memory/" + contractMeta.name,
                         df.format(new Date()));
                 File parent = f.getParentFile();
                 if (!parent.exists()) {
-                    LOGGER.trace("make directory " + parent.getAbsolutePath() + ":" + parent.mkdirs());
+                    LOGGER.trace(
+                            "make directory " + parent.getAbsolutePath() + ":" + parent.mkdirs());
                 }
                 ContractManager.instance.dumpContract(contract.getID(), f.getAbsolutePath());
                 ContractManager.instance.invokeContractSuicide(client);
@@ -342,27 +342,19 @@ public class ContractStatusRecorder extends StatusRecorder<ContractMeta> {
                     JsonUtil.fromJson(startContractResult, ContractResult.class);
             if (contractResult.status == ContractResult.Status.Error) {
                 // 记录错误日志
-                ContractManager.instance.addLocalContractLog(
-                        "resumeContract error",
-                        meta.contract.getID(),
-                        meta.name,
-                        meta.contract.getOwner());
+                ContractManager.instance.addLocalContractLog("resumeContract error",
+                        meta.contract.getID(), meta.name, meta.contract.getOwner());
             } else {
-                ContractManager.instance.addLocalContractLog(
-                        "resumeContract success",
-                        meta.contract.getID(),
-                        meta.name,
-                        meta.contract.getOwner());
+                ContractManager.instance.addLocalContractLog("resumeContract success",
+                        meta.contract.getID(), meta.name, meta.contract.getOwner());
                 // TODO 可能会重复load相同的镜像？
                 // 如果是killed 只根据manifest去判断是否加载memory
                 // 可增加一个判断，如果hanged朋manifest里是加载memory，这里就不再加载了。
                 ContractClient client = id2ContractClient.get(meta.getID());
                 if (preStatus == ContractStatusEnum.HANGED) {
-
-                    ContractManager.instance.loadMemory(
-                            client, ContractManager.instance.findNewestMemory(meta.name));
-
-
+                    String memory = ContractManager.instance.findNewestMemory(meta.name);
+                    if (memory != null)
+                        ContractManager.instance.loadMemory(client, memory);
                 }
                 client.contractMeta.setStatus(ContractStatusEnum.RUNNING);
                 updateValue(client.contractMeta);
@@ -389,6 +381,11 @@ public class ContractStatusRecorder extends StatusRecorder<ContractMeta> {
 
         @Override
         public boolean visit(int i) {
+            return visit("127.0.0.1", i);
+        }
+
+        @Override
+        public boolean visit(String host, int i) {
             if (i == ContractManager.cPort.getCMPort()) {
                 return false;
             }
@@ -396,7 +393,7 @@ public class ContractStatusRecorder extends StatusRecorder<ContractMeta> {
                 return true;
             }
             try {
-                ContractClient client = new ContractClient(i);
+                ContractClient client = new ContractClient(host, i);
                 // LOGGER.info("[CM重连] position-----1");
                 if (client.isRunning) {
                     LOGGER.debug("CP listened to port " + i + " is running");
@@ -411,26 +408,19 @@ public class ContractStatusRecorder extends StatusRecorder<ContractMeta> {
                         ContractManager.instance.invokeContractSuicide(client);
                         return false;
                     }
-                    LOGGER.debug(
-                            String.format(
+                    LOGGER.debug(String.format(
                             "CP listened to port %d:\n\tID=%s\n\tName=%s\n\tType=%s\n"
                                     + "\tKey=%s\n\tPubKey=%s\n\tCopies=%d\n\t%s",
-                                    i,
-                                    client.getContractID(),
-                                    client.contractMeta.name,
-                                    client.getContractType(),
-                                    client.getContractKey(),
-                                    client.getPubkey(),
-                                    client.getContractCopies(),
-                                    client.contractMeta.contract.startInfo));
+                            i, client.getContractID(), client.contractMeta.name,
+                            client.getContractType(), client.getContractKey(), client.getPubkey(),
+                            client.getContractCopies(), client.contractMeta.contract.startInfo));
                     client.get.syncGet("", "setDir", ContractManager.dir);
                     // String str = client.getIdentifier();
                     client.get.syncGet("", "getDumpPeriod", "a");
                     client.get.syncGet("", "startAutoDump", "a");
                     createContract(client);
-                    LOGGER.info(
-                            String.format("reconnect to port %d: contract %s",
-                                    i, client.contractMeta.name));
+                    LOGGER.info(String.format("reconnect to port %d: contract %s", i,
+                            client.contractMeta.name));
                     return true;
                 }
             } catch (Exception e) {

src/main/java/org/bdware/sc/LoggerPrintStream.java

@@ -0,0 +1,19 @@
+package org.bdware.sc;
+
+import org.apache.logging.log4j.Logger;
+
+import java.io.PrintStream;
+
+public class LoggerPrintStream extends PrintStream {
+    public LoggerPrintStream(Logger logger) {
+        super(System.out, true);
+        this.logger = logger;
+    }
+
+    Logger logger;
+
+    @Override
+    public void println(String str) {
+        logger.info(str);
+    }
+}

src/main/java/org/bdware/sc/MasterElectTimeRecorder.java

@@ -1,7 +1,5 @@
 package org.bdware.sc;
 
-import java.util.HashMap;
-import java.util.Map;
 
 
 // Node

src/main/java/org/bdware/sc/MultiContractRecorder.java

@@ -7,6 +7,9 @@ import org.bdware.sc.db.KeyValueDBUtil;
 import org.bdware.sc.db.StatusRecorder;
 import org.bdware.sc.units.MultiContractMeta;
 
+import java.util.HashSet;
+import java.util.Set;
+
 public class MultiContractRecorder extends StatusRecorder<MultiContractMeta> {
     static final String dbName = CMTables.UnitContracts.toString();
     static final String prefix = "Multi_C_Meta_";
@@ -17,26 +20,31 @@ public class MultiContractRecorder extends StatusRecorder<MultiContractMeta> {
         for (MultiContractMeta meta : getStatus().values()) {
             try {
                 meta.initQueue();
-                int lastExeSeq =
-                        Integer.parseInt(
-                                KeyValueDBUtil.instance.getValue(
-                                        CMTables.LastExeSeq.toString(), meta.getContractID()));
+                int lastExeSeq = Integer.parseInt(KeyValueDBUtil.instance
+                        .getValue(CMTables.LastExeSeq.toString(), meta.getContractID()));
                 meta.setLastExeSeq(lastExeSeq);
             } catch (Exception e) {
-                e.printStackTrace();
+                LOGGER.error(e);
             }
         }
     }
 
     public MultiContractMeta getMultiContractMeta(String idOrNameOrDOI) {
-        if (idOrNameOrDOI == null) return null;
+        if (idOrNameOrDOI == null)
+            return null;
         ContractMeta meta = ContractManager.instance.statusRecorder.getContractMeta(idOrNameOrDOI);
-        if (meta == null) return null;
+        return getMultiContractMeta(meta);
+    }
+
+    public MultiContractMeta getMultiContractMeta(ContractMeta meta) {
+        if (meta == null)
+            return null;
         return getStatus().get(meta.id);
     }
 
     public MultiContractMeta createIfNotExist(String contractID) {
-        MultiContractMeta ret = getMultiContractMeta(contractID);
+        ContractMeta meta = ContractManager.instance.statusRecorder.createIfNotExist(contractID);
+        MultiContractMeta ret = getMultiContractMeta(meta);
         if (null == ret) {
             LOGGER.info("requests don't contain contract " + contractID);
             ret = new MultiContractMeta(contractID);
@@ -44,4 +52,14 @@ public class MultiContractRecorder extends StatusRecorder<MultiContractMeta> {
         }
         return ret;
     }
+
+    public void removeNotExist(ContractStatusRecorder statusRecorder) {
+        Set<MultiContractMeta> toRemove = new HashSet<>();
+        for (String key : getStatus().keySet()) {
+            if (statusRecorder.getContractMeta(key) == null)
+                toRemove.add(getStatus().get(key));
+        }
+        for (MultiContractMeta meta : toRemove)
+            remove(meta);
+    }
 }

src/main/java/org/bdware/sc/YPKResourceManager.java

@@ -0,0 +1,92 @@
+package org.bdware.sc;
+
+import com.github.benmanes.caffeine.cache.Cache;
+import com.github.benmanes.caffeine.cache.Caffeine;
+import org.bdware.sc.bean.Contract;
+
+import java.io.*;
+import java.nio.file.Files;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+import java.util.concurrent.TimeUnit;
+import java.util.zip.ZipEntry;
+import java.util.zip.ZipInputStream;
+
+public class YPKResourceManager {
+    public static String ypkCacheDir = "./ypkcache";
+    static ExecutorService es = Executors.newFixedThreadPool(2);
+
+    public static void unzipYPK(Contract contract) {
+        es.execute(() -> unzip(contract.getScriptStr(), getUnzipDir(contract)));
+    }
+
+    public static String getUnzipDir(Contract contract) {
+        return ypkCacheDir + "/" + contract.getID();
+    }
+
+    private static final long MAX_CACHE_SIZE = 2L * 1024 * 1024 * 1024; // 2GB
+    private static final long MAX_FILE_SIZE = 10 * 1024 * 1024; // 10MB
+
+    private static final Cache<String, byte[]> cache = Caffeine.newBuilder()
+            .maximumSize(MAX_CACHE_SIZE).expireAfterAccess(30, TimeUnit.MINUTES).build();
+
+    public static InputStream getCachedStream(Contract c, String path) throws IOException {
+        File target = new File(getUnzipDir(c), path);
+        String key = target.getAbsolutePath();
+
+        if (target.length() > MAX_FILE_SIZE) {
+            // 文件过大，直接从文件系统读取
+            return new FileInputStream(target);
+        } else {
+            byte[] data = cache.get(key, k -> {
+                try {
+                    return Files.readAllBytes(target.toPath());
+                } catch (IOException e) {
+                    throw new RuntimeException(e);
+                }
+            });
+            // 从缓存中返回一个新的 ByteArrayInputStream
+            return new ByteArrayInputStream(data);
+        }
+    }
+
+    public static void unzip(String zipFilePath, String destDir) {
+        File dir = new File(destDir);
+        if (!dir.exists())
+            dir.mkdirs();
+        byte[] buffer = new byte[1024];
+        try {
+            ZipInputStream zis = new ZipInputStream(new FileInputStream(zipFilePath));
+            ZipEntry zipEntry = zis.getNextEntry();
+            while (zipEntry != null) {
+                String fileName = zipEntry.getName();
+                File newFile = new File(destDir + File.separator + fileName);
+                // 创建所有上级目录
+                new File(newFile.getParent()).mkdirs();
+
+                if (zipEntry.isDirectory()) {
+                    if (!newFile.isDirectory() && !newFile.mkdirs()) {
+                        throw new IOException("Failed to create directory " + newFile);
+                    }
+                } else {
+                    // 写入文件内容
+                    FileOutputStream fos = new FileOutputStream(newFile);
+                    int len;
+                    while ((len = zis.read(buffer)) > 0) {
+                        fos.write(buffer, 0, len);
+                    }
+                    fos.close();
+                }
+                zipEntry = zis.getNextEntry();
+            }
+            zis.closeEntry();
+            zis.close();
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
+
+    public static boolean existYPK(Contract contract) {
+        return new File(contract.getScriptStr()).exists();
+    }
+}

src/main/java/org/bdware/sc/consistency/pbft/PBFTAlgorithm.java

@@ -79,7 +79,8 @@ public class PBFTAlgorithm implements CommitAlgorithm {
                     prepareMsg = new PBFTMessage();
                     prepareMsg.order = allocatedID.incrementAndGet();
                     prepareMsg.type = PBFTType.PrePrepare;
-                    prepareMsg.content = (java.util.Arrays.hashCode(pbftMessage.content) + "").getBytes();
+                    prepareMsg.content =
+                            (java.util.Arrays.hashCode(pbftMessage.content) + "").getBytes();
 
                     temp = new PCInfo();
                     temp.request = pbftMessage;
@@ -108,7 +109,8 @@ public class PBFTAlgorithm implements CommitAlgorithm {
                 break;
             case Prepare:
                 temp = info.get(pbftMessage.order);
-                LOGGER.info("receive Prepare from:" + pbftMessage.sendID + " -> " + pbftMessage.order);
+                LOGGER.info(
+                        "receive Prepare from:" + pbftMessage.sendID + " -> " + pbftMessage.order);
                 if (temp == null) {
                     PCInfo pcInfo = new PCInfo();
                     pcInfo.buff.add(pbftMessage);
@@ -155,7 +157,8 @@ public class PBFTAlgorithm implements CommitAlgorithm {
                     prepareMsg.order = pbftMessage.order;
                     prepareMsg.type = PBFTType.PrePrepare;
                     temp = info.get(prepareMsg.order);
-                    prepareMsg.content = (java.util.Arrays.hashCode(temp.request.content) + "").getBytes();
+                    prepareMsg.content =
+                            (java.util.Arrays.hashCode(temp.request.content) + "").getBytes();
                     broadcast(pbftMessage);
                 }
             default:
@@ -207,7 +210,8 @@ public class PBFTAlgorithm implements CommitAlgorithm {
     private void matchPrePrepareFromOriginReqeust(int hash, PBFTMessage pbftMessage) {
         for (PCInfo pcInfo : info.values()) {
             for (PBFTMessage msg : pcInfo.buff) {
-                if (msg.type == PBFTType.PrePrepare && Integer.parseInt(new String(msg.content)) == hash) {
+                if (msg.type == PBFTType.PrePrepare
+                        && Integer.parseInt(new String(msg.content)) == hash) {
                     handlePrePrepare(msg, original.get(hash).second);
                     return;
                 }
@@ -220,10 +224,8 @@ public class PBFTAlgorithm implements CommitAlgorithm {
     }
 
     private void retryLater(int delay, final Node sender, final PBFTMessage pbftMessage) {
-        ContractManager.scheduledThreadPool.schedule(
-                () -> onPBFTMessage(sender, pbftMessage),
-                delay,
-                TimeUnit.MILLISECONDS);
+        ContractManager.scheduledThreadPool.schedule(() -> onPBFTMessage(sender, pbftMessage),
+                delay, TimeUnit.MILLISECONDS);
     }
 
     private void handlePrePrepare(PBFTMessage pbftMessage, PBFTMessage req) {
@@ -399,8 +401,8 @@ public class PBFTAlgorithm implements CommitAlgorithm {
 
         public String getDisplayStr() {
             return "pSize:" + (prepare == null ? "null" : prepare.size()) + " cSize:"
-                    + (commit == null ? "null" : commit.size()) + " isSendCommit:" + isSendCommit + " isSendReply:"
-                    + isSendReply + " buffSize:" + buff.size();
+                    + (commit == null ? "null" : commit.size()) + " isSendCommit:" + isSendCommit
+                    + " isSendReply:" + isSendReply + " buffSize:" + buff.size();
         }
     }
 }

src/main/java/org/bdware/sc/consistency/pbft/PBFTType.java

@@ -2,6 +2,7 @@ package org.bdware.sc.consistency.pbft;
 
 public enum PBFTType {
     Request(0), PrePrepare(1), Prepare(2), Commit(3), Reply(4), Unknown(5), ReSend(6), AddMember(7);
+
     private int type;
 
     PBFTType(int i) {

src/main/java/org/bdware/sc/consistency/pbft/ViewAlgorithm.java

@@ -4,8 +4,6 @@ import org.bdware.sc.bean.ContractRequest;
 import org.bdware.sc.conn.Node;
 import org.bdware.sc.consistency.CommitAlgorithm;
 import org.bdware.sc.consistency.Committer;
-import org.bdware.sc.consistency.pbft.PBFTMessage;
-import org.bdware.sc.consistency.pbft.PBFTType;
 import org.bdware.sc.units.TrustfulExecutorConnection;
 
 public class ViewAlgorithm implements CommitAlgorithm {
@@ -13,8 +11,7 @@ public class ViewAlgorithm implements CommitAlgorithm {
     private Committer committer;
     private TrustfulExecutorConnection connection;
 
-    public ViewAlgorithm(boolean isMaster) {
-    }
+    public ViewAlgorithm(boolean isMaster) {}
 
     public void setCommitter(Committer c) {
         committer = c;

src/main/java/org/bdware/sc/event/EventBroker.java

@@ -49,22 +49,16 @@ public class EventBroker {
         tempTopics = recorder.recoverTempTopicsFromDb();
 
         // regularly check temporary topics and clean them
-        ContractManager.scheduledThreadPool.scheduleWithFixedDelay(
-                () -> {
+        ContractManager.scheduledThreadPool.scheduleWithFixedDelay(() -> {
             long current = System.currentTimeMillis();
             int oldSize = tempTopics.size();
             tempTopics.keySet().forEach(topic -> {
                 if (tempTopics.get(topic) + EXPIRED_TIME > current) {
-                            String reqID =
-                                    ContractManager.instance.nodeCenterConn.getNodeId() +
-                                            "_" + System.currentTimeMillis();
-                            REvent cleanEvent =
-                                    new REvent(
-                                            topic,
-                                            UNSUBSCRIBE,
-                                            null,
-                                            reqID);
-                            cleanEvent.doSignature(ContractManager.instance.nodeCenterConn.getNodeKeyPair());
+                    String reqID = ContractManager.instance.nodeCenterConn.getNodeId() + "_"
+                            + System.currentTimeMillis();
+                    REvent cleanEvent = new REvent(topic, UNSUBSCRIBE, null, reqID);
+                    cleanEvent
+                            .doSignature(ContractManager.instance.nodeCenterConn.getNodeKeyPair());
                     handle(cleanEvent);
                     tempTopics.remove(topic);
                 }
@@ -72,16 +66,11 @@ public class EventBroker {
             if (oldSize != tempTopics.size()) {
                 recorder.saveTempTopics(tempTopics);
             }
-                },
-                0L,
-                EXPIRED_TIME,
-                TimeUnit.MILLISECONDS);
+        }, 0L, EXPIRED_TIME, TimeUnit.MILLISECONDS);
         // regularly create check point in database
         ContractManager.scheduledThreadPool.scheduleAtFixedRate(
-                () -> recorder.createCheckPoint(topic2cIds, id2Consumers),
-                EXPIRED_TIME,
-                EXPIRED_TIME,
-                TimeUnit.MILLISECONDS);
+                () -> recorder.createCheckPoint(topic2cIds, id2Consumers), EXPIRED_TIME,
+                EXPIRED_TIME, TimeUnit.MILLISECONDS);
 
         NodeConsumer.setCenter(center);
 
@@ -103,10 +92,11 @@ public class EventBroker {
         switch (event.getType()) {
             case SUBSCRIBE:
                 if (null != topic && !topic.isEmpty()) {
-                    doSubscribe(event);
+                    IEventConsumer consumer = doSubscribe(event);
                     // save & try to sub in center
                     recorder.appendEvent(event);
-                    center.subInCenter(event.getTopic(), event.getSemantics());
+                    center.subInCenter(event.getTopic(), event.getSemantics(), event.getCenter(),
+                            consumer, event);
                 }
                 break;
             case UNSUBSCRIBE:
@@ -116,9 +106,10 @@ public class EventBroker {
             case PUBLISH:
             case PREPUB:
             case PRESUB:
-                LOGGER.info(String.format("Receive %s event from topic %s", event.getSemantics(), topic));
-                LOGGER.debug(String.format("Receive %s event %s: %s",
-                        event.getSemantics(), topic, event.getContent()));
+                LOGGER.info(String.format("Receive %s event from topic %s", event.getSemantics(),
+                        topic));
+                LOGGER.debug(String.format("Receive %s event %s: %s", event.getSemantics(), topic,
+                        event.getContent()));
                 if (event.isForward()) {
                     // send event to the event center
                     event.setForward(center.deliverEvent(topic, event));
@@ -133,13 +124,17 @@ public class EventBroker {
         }
     }
 
-    private void doSubscribe(REvent e) {
-        subInReg(e.getTopic(), parseConsumer(e.getContent()), this.topic2cIds, this.id2Consumers);
+    private IEventConsumer doSubscribe(REvent e) {
+        IEventConsumer consumer = parseConsumer(e.getContent());
+        if (subInReg(e.getTopic(), consumer, this.topic2cIds, this.id2Consumers)) {
             // for events with semantics ONLY_ONCE, mark the topic is a temporary topic
             if (ONLY_ONCE.equals(e.getSemantics()) && !tempTopics.containsKey(e.getTopic())) {
                 tempTopics.put(e.getTopic(), System.currentTimeMillis());
                 recorder.saveTempTopics(tempTopics);
             }
+            return consumer;
+        }
+        return null;
     }
 
     public void doSubscribe(String topic, IEventConsumer consumer) {
@@ -155,11 +150,8 @@ public class EventBroker {
      * @param id2Consumers consumer registry of broker or a check point in event recorder
      * @return if the subscribing succeeds
      */
-    public boolean subInReg(
-            String topic,
-            IEventConsumer consumer,
-            Map<String, Set<String>> topic2cIds,
-            Map<String, IEventConsumer> id2Consumers) {
+    public boolean subInReg(String topic, IEventConsumer consumer,
+            Map<String, Set<String>> topic2cIds, Map<String, IEventConsumer> id2Consumers) {
         if (null == consumer) {
             return false;
         }
@@ -173,8 +165,8 @@ public class EventBroker {
         topic2cIds.get(topic).add(cId);
         switch (consumer.getType()) {
             case Contract:
-                LOGGER.info("contract " + ((ContractConsumer) consumer).getContract() +
-                        " subscribes topic " + topic);
+                LOGGER.info("contract " + ((ContractConsumer) consumer).getContract()
+                        + " subscribes topic " + topic);
                 break;
             case Node:
                 LOGGER.info("node " + consumer.getId() + " subscribes topic " + topic);
@@ -195,10 +187,11 @@ public class EventBroker {
      * do subscribing in registry<br/>
      * topic and consumer must not be null at the same time
      * <ul>
-     *     <li>if consumer is null and topic is not, it means the topic is a temporary topic, remove it</li>
-     *     <li>if topic is null and consumer is not,
-     *     it means a consumer or a contract wants to unsubscribe all topics,
-     *     remove all related consumers in topic registry and consumer registry</li>
+     * <li>if consumer is null and topic is not, it means the topic is a temporary topic, remove
+     * it</li>
+     * <li>if topic is null and consumer is not, it means a consumer or a contract wants to
+     * unsubscribe all topics, remove all related consumers in topic registry and consumer
+     * registry</li>
      * <li>if two of them is not null, do unsubscribing in two registries</li>
      * </ul>
      *
@@ -208,11 +201,8 @@ public class EventBroker {
      * @param id2Consumers consumer registry of broker or a check point in event recorder
      * @return if the subscribing succeeds
      */
-    public boolean unsubInReg(
-            String topic,
-            IEventConsumer consumer,
-            Map<String, Set<String>> topic2cIds,
-            Map<String, IEventConsumer> id2Consumers) {
+    public boolean unsubInReg(String topic, IEventConsumer consumer,
+            Map<String, Set<String>> topic2cIds, Map<String, IEventConsumer> id2Consumers) {
         if (null == topic && null == consumer) {
             return false;
         }
@@ -232,7 +222,8 @@ public class EventBroker {
             // if cId belongs to a contract, find all related consumers
             toRmIds = new ArrayList<>();
             id2Consumers.forEach((k, c) -> {
-                if (c instanceof ContractConsumer && ((ContractConsumer) c).getContract().equals(cId)) {
+                if (c instanceof ContractConsumer
+                        && ((ContractConsumer) c).getContract().equals(cId)) {
                     toRmIds.add(k);
                 }
             });
@@ -255,7 +246,8 @@ public class EventBroker {
 
     /**
      * parse consumer information from content str<br/>
-     * if caller wants to select all consumers of a contract, the content str is also parsed into a node consumer
+     * if caller wants to select all consumers of a contract, the content str is also parsed into a
+     * node consumer
      *
      * @param content json string, {"subscriber": "[subscriber]", "handler?": "[handler]"}
      * @return a node consumer or contract consumer, or null if exception is thrown
@@ -275,6 +267,9 @@ public class EventBroker {
             if (null != handler && !handler.isEmpty()) {
                 consumer = new ContractConsumer(subscriber, handler);
             } else {
+                if (subscriber.equals(ContractManager.instance.nodeCenterConn.getNodeId())) {
+                    return null;
+                }
                 consumer = new NodeConsumer(subscriber);
             }
             return consumer;
@@ -298,19 +293,16 @@ public class EventBroker {
             case AT_LEAST_ONCE:
             case NEED_RETRY:
                 // send events to all
-                topicConsumers.forEach(cId ->
-                        deliverEvent(event, cEvent, nEventStr, cId, topic, true));
+                topicConsumers
+                        .forEach(cId -> deliverEvent(event, cEvent, nEventStr, cId, topic, true));
                 break;
             case AT_MOST_ONCE:
                 // send event to a random consumer
                 // AT_MOST_ONCE, so broker don't need to do anything when delivering fails
-                deliverEvent(
-                        event,
-                        cEvent,
-                        nEventStr,
-                        topicConsumers.toArray()[(int) (Math.random() * topicConsumers.size())].toString(),
-                        topic,
-                        true);
+                deliverEvent(event, cEvent, nEventStr,
+                        topicConsumers.toArray()[(int) (Math.random() * topicConsumers.size())]
+                                .toString(),
+                        topic, true);
                 break;
             case ONLY_ONCE:
                 switch (event.getType()) {
@@ -336,20 +328,14 @@ public class EventBroker {
                             // send PREPUB events to all consumers
                             // TODO if there are no consumers to receive the ONLY_ONCE events?
                             ContractManager.threadPool.execute(() -> {
-                                REvent prePubMsg = new REvent(event.getTopic(),
-                                        PREPUB,
-                                        contentHash,
+                                REvent prePubMsg = new REvent(event.getTopic(), PREPUB, contentHash,
                                         event.getRequestID());
-                                prePubMsg.doSignature(ContractManager.instance.nodeCenterConn.getNodeKeyPair());
-                                topicConsumers.forEach(cId ->
-                                        deliverEvent(prePubMsg,
-                                                new Event(event.getTopic(),
-                                                        contentHash,
+                                prePubMsg.doSignature(
+                                        ContractManager.instance.nodeCenterConn.getNodeKeyPair());
+                                topicConsumers.forEach(cId -> deliverEvent(prePubMsg,
+                                        new Event(event.getTopic(), contentHash,
                                                 prePubMsg.getSemantics()),
-                                                JsonUtil.toJson(prePubMsg),
-                                                cId,
-                                                topic,
-                                                false));
+                                        JsonUtil.toJson(prePubMsg), cId, topic, false));
                                 // wait for responses from contracts (PRESUB events)
                                 while (true) {
                                     try {
@@ -357,20 +343,20 @@ public class EventBroker {
                                             flag.wait(30 * 1000L);
                                         }
                                         if (!flag.get().isEmpty()) {
-                                            REvent finalMsg = new REvent(flag.get(),
-                                                    PUBLISH,
-                                                    event.getContent(),
-                                                    HashUtil.sha3(
-                                                            contentHash + System.currentTimeMillis()));
+                                            REvent finalMsg = new REvent(flag.get(), PUBLISH,
+                                                    event.getContent(), HashUtil.sha3(contentHash
+                                                            + System.currentTimeMillis()));
                                             // if the delivering fails, retry publishing
                                             finalMsg.setSemantics(NEED_RETRY);
                                             finalMsg.doSignature(
-                                                    ContractManager.instance.nodeCenterConn.getNodeKeyPair());
+                                                    ContractManager.instance.nodeCenterConn
+                                                            .getNodeKeyPair());
                                             handle(finalMsg);
                                             break;
                                         }
                                     } catch (InterruptedException e) {
-                                        LOGGER.warn("ONLY_ONE event delivering is interrupted: " + e.getMessage());
+                                        LOGGER.warn("ONLY_ONE event delivering is interrupted: "
+                                                + e.getMessage());
                                         // e.printStackTrace();
                                     }
                                 }
@@ -389,19 +375,15 @@ public class EventBroker {
      * publish the event to the consumer
      *
      * @param event event message
-     * @param cEvent    simple event message to the contract consumer, only topic, content and semantics
+     * @param cEvent simple event message to the contract consumer, only topic, content and
+     *        semantics
      * @param nEventStr event message to the node
      * @param cId consumer id
      * @param topic topic of the event
      * @param isPub if the event is published or pre-published
      */
-    private void deliverEvent(
-            REvent event,
-            Event cEvent,
-            String nEventStr,
-            String cId,
-            String topic,
-            boolean isPub) {
+    private void deliverEvent(REvent event, Event cEvent, String nEventStr, String cId,
+            String topic, boolean isPub) {
         if (id2Consumers.containsKey(cId)) {
             IEventConsumer consumer = id2Consumers.get(cId);
             if (consumer instanceof ContractConsumer) {
@@ -412,31 +394,24 @@ public class EventBroker {
                         public void onResult(String unused) {
                             // if the delivering fails, unsubscribe the consumer
                             ContractConsumer c = (ContractConsumer) consumer;
-                            ContractClient client = ContractManager.instance.getClient(c.getContract());
-                            String reqID =
-                                    ContractManager.instance.nodeCenterConn.getNodeKeyPair().getPublicKeyStr() +
-                                            "_" + System.currentTimeMillis();
-                            REvent unsubEvent =
-                                    new REvent(
-                                            topic,
-                                            UNSUBSCRIBE,
-                                            "{\"subscriber\":\"" + cId + "\"}",
-                                            reqID);
+                            ContractClient client =
+                                    ContractManager.instance.getClient(c.getContract());
+                            String reqID = ContractManager.instance.nodeCenterConn.getNodeKeyPair()
+                                    .getPublicKeyStr() + "_" + System.currentTimeMillis();
+                            REvent unsubEvent = new REvent(topic, UNSUBSCRIBE,
+                                    "{\"subscriber\":\"" + cId + "\"}", reqID);
                             unsubEvent.doSignature(client.getPubkey(), client.getContractKey());
                             handle(unsubEvent);
 
                             // if the event is an ONLY_ONCE event, retry publishing
                             if (NEED_RETRY.equals(event.getSemantics())) {
-                                REvent newMsg =
-                                        new REvent(
-                                                topic.split("\\|")[0],
-                                                PUBLISH,
-                                                event.getContent(),
-                                                event.getRequestID());
+                                REvent newMsg = new REvent(topic.split("\\|")[0], PUBLISH,
+                                        event.getContent(), event.getRequestID());
                                 newMsg.setSemantics(ONLY_ONCE);
                                 newMsg.setHash(event.getHash());
                                 newMsg.setTxHash(event.getTxHash());
-                                newMsg.doSignature(ContractManager.instance.nodeCenterConn.getNodeKeyPair());
+                                newMsg.doSignature(
+                                        ContractManager.instance.nodeCenterConn.getNodeKeyPair());
                                 handle(newMsg);
                             }
                         }
@@ -458,8 +433,8 @@ public class EventBroker {
                 });
             } else if (isPub) {
                 // client consumer
-                ContractManager.threadPool.execute(() ->
-                        consumer.publishEvent(nEventStr, new ResultCallback() {
+                ContractManager.threadPool
+                        .execute(() -> consumer.publishEvent(nEventStr, new ResultCallback() {
                             @Override
                             public void onResult(String unused) {
                                 unsubInReg(null, consumer, topic2cIds, id2Consumers);

src/main/java/org/bdware/sc/event/EventCenter.java

@@ -1,5 +1,8 @@
 package org.bdware.sc.event;
 
+import org.bdware.sc.event.clients.ContractConsumer;
+import org.bdware.sc.event.clients.IEventConsumer;
+import org.bdware.sc.event.clients.NodeConsumer;
 import org.bdware.sc.util.DHTUtil;
 import org.bdware.sc.util.JsonUtil;
 
@@ -15,17 +18,18 @@ public class EventCenter {
      * get the nearest node to the topic in the hash function range
      *
      * @param topic the topic
+     * @param k the number of centers
      * @return id of the node
      */
-    public String getCenterByTopic(String topic) {
+    public String[] getCenterByTopic(String topic, int k) {
         if (null == instance.nodeCenterConn) {
             return null;
         }
-        String[] centers = DHTUtil.getClusterByKey(topic, 1);
+        String[] centers = DHTUtil.getClusterByKey(topic, k);
         if (null == centers || centers.length == 0) {
             return null;
         }
-        return centers[0];
+        return centers;
     }
 
     /**
@@ -33,21 +37,39 @@ public class EventCenter {
      *
      * @param topic event topic
      * @param semantics event semantics, used to mark PRESUB events
+     * @param center id of event center if the subscribing has been handled
+     * @param consumer consumer
+     * @param event original event
      */
-    public void subInCenter(String topic, REvent.REventSemantics semantics) {
+    public void subInCenter(String topic, REvent.REventSemantics semantics, String center,
+            IEventConsumer consumer, REvent event) {
         if (null == instance.nodeCenterConn) {
             return;
         }
-        REvent msg = new REvent(
-                topic,
-                REvent.REventType.SUBSCRIBE,
-                String.format("{\"subscriber\":\"%s\"}",
-                        instance.nodeCenterConn.getNodeId()),
-                "");
+        REvent msg = new REvent(topic, REvent.REventType.SUBSCRIBE,
+                String.format("{\"subscriber\":\"%s\"}", instance.nodeCenterConn.getNodeId()), "");
         msg.setSemantics(semantics);
         msg.doSignature(instance.nodeCenterConn.getNodeKeyPair());
-        String nodeId = getCenterByTopic(topic);
-        instance.masterStub.deliverEvent(nodeId, JsonUtil.toJson(msg));
+        msg.setCenter(center);
+        String[] centers = getCenterByTopic(topic, 2);
+        if (null == centers) {
+            return;
+        }
+        if (null != center) {
+            if (centers[0].equals(center) && centers.length > 1) {
+                instance.masterStub.deliverEvent(centers[1], JsonUtil.toJson(msg));
+            } else {
+                instance.masterStub.deliverEvent(centers[0], JsonUtil.toJson(msg));
+            }
+        } else if (!instance.masterStub.deliverEvent(centers[0], JsonUtil.toJson(msg))) {
+            if (consumer instanceof NodeConsumer) {
+                event.setCenter(centers[0]);
+                instance.masterStub.deliverEvent(consumer.getId(), JsonUtil.toJson(event));
+            } else if (consumer instanceof ContractConsumer && centers.length > 1) {
+                msg.setCenter(centers[0]);
+                instance.masterStub.deliverEvent(centers[1], JsonUtil.toJson(msg));
+            }
+        }
     }
 
     /**
@@ -61,8 +83,11 @@ public class EventCenter {
         if (null == instance.masterStub) {
             return false;
         }
-        String nodeId = getCenterByTopic(topic);
-        return instance.masterStub.deliverEvent(nodeId, JsonUtil.toJson(event));
+        String[] centers = getCenterByTopic(topic, 1);
+        if (null == centers) {
+            return false;
+        }
+        return instance.masterStub.deliverEvent(centers[0], JsonUtil.toJson(event));
     }
 
     /**

src/main/java/org/bdware/sc/event/EventRecorder.java

@@ -79,9 +79,11 @@ public class EventRecorder {
         String key = KeyValueRocksDBUtil.instance.getValue(dbName, LATEST_EVENT_KEY);
         latestEvent.set(key);
         CheckPoint cp = new CheckPoint();
-        Type topic2cIdsType = TypeToken.getParameterized(ConcurrentHashMap.class, String.class,
-                TypeToken.getParameterized(Set.class, String.class,
-                        String.class).getType()).getType();
+        Type topic2cIdsType =
+                TypeToken
+                        .getParameterized(ConcurrentHashMap.class, String.class,
+                                TypeToken.getParameterized(Set.class, String.class).getType())
+                        .getType();
         // retrieving transactions from database
         while (null != key && !key.isEmpty()) {
             String json = KeyValueRocksDBUtil.instance.getValue(dbName, key);
@@ -93,14 +95,16 @@ public class EventRecorder {
                 if (json.startsWith("cp")) {
                     // create check point by the transaction and stop retrieving
                     JsonObject data = JsonUtil.parseStringAsJsonObject(json.substring(2));
-                    cp.topic2cIds = JsonUtil.fromJson(data.get("topic2cIds").toString(), topic2cIdsType);
+                    cp.topic2cIds =
+                            JsonUtil.fromJson(data.get("topic2cIds").toString(), topic2cIdsType);
                     JsonObject id2Consumers = data.getAsJsonObject("id2Consumers");
                     for (String k : id2Consumers.keySet()) {
                         JsonObject consumer = id2Consumers.getAsJsonObject(k);
                         if (!consumer.has("type")) {
                             continue;
                         }
-                        ConsumerType type = ConsumerType.valueOf(consumer.get("type").getAsString());
+                        ConsumerType type =
+                                ConsumerType.valueOf(consumer.get("type").getAsString());
                         switch (type) {
                             case Contract:
                                 cp.id2Consumers.put(k,
@@ -145,7 +149,8 @@ public class EventRecorder {
             // if empty, return the check point
             latestEvent.setCp(true);
         } else {
-            // on the base of old check point, process following sub or unsub events to recover registry
+            // on the base of old check point, process following sub or unsub events to recover
+            // registry
             while (!stack.empty()) {
                 Object record = stack.pop();
                 if (record instanceof CheckPoint) {
@@ -155,15 +160,19 @@ public class EventRecorder {
                     IEventConsumer consumer = broker.parseConsumer(tran.content);
                     switch (tran.type) {
                         case SUBSCRIBE:
-                            if (!broker.subInReg(tran.topic, consumer, cp.topic2cIds, cp.id2Consumers)) {
+                            if (!broker.subInReg(tran.topic, consumer, cp.topic2cIds,
+                                    cp.id2Consumers)) {
                                 LOGGER.warn("record damaged! " + key);
-                                LOGGER.debug("record damaged! " + key + ": " + JsonUtil.toJson(tran));
+                                LOGGER.debug(
+                                        "record damaged! " + key + ": " + JsonUtil.toJson(tran));
                             }
                             break;
                         case UNSUBSCRIBE:
-                            if (!broker.unsubInReg(tran.topic, consumer, cp.topic2cIds, cp.id2Consumers)) {
+                            if (!broker.unsubInReg(tran.topic, consumer, cp.topic2cIds,
+                                    cp.id2Consumers)) {
                                 LOGGER.warn("record damaged! " + key);
-                                LOGGER.debug("record damaged! " + key + ": " + JsonUtil.toJson(tran));
+                                LOGGER.debug(
+                                        "record damaged! " + key + ": " + JsonUtil.toJson(tran));
                             }
                         default:
                             break;

src/main/java/org/bdware/sc/event/clients/ContractConsumer.java

@@ -1,5 +1,6 @@
 package org.bdware.sc.event.clients;
 
+import com.google.gson.Gson;
 import com.google.gson.annotations.Expose;
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
@@ -80,6 +81,7 @@ public class ContractConsumer implements IEventConsumer {
             return;
         }
         AtomicInteger callCount = new AtomicInteger(0);
+        LOGGER.info("ContractConsumer!" + new Gson().toJson(cr));
         // TODO sending requests at a high frequency maybe cause that some requests are ignored
         ScheduledFuture<?> future = ContractManager.scheduledThreadPool.scheduleAtFixedRate(
                 () -> ContractManager.instance.executeContractInternal(cr, new ResultCallback() {
@@ -89,19 +91,20 @@ public class ContractConsumer implements IEventConsumer {
                         try {
                             ContractResult result = JsonUtil.fromJson(str, ContractResult.class);
                             if (!result.status.equals(ContractResult.Status.Success)) {
-                                if (callCount.get() == TIMEOUT_COUNT ||
-                                        (result.status == ContractResult.Status.Exception &&
-                                                result.result.toString().contains("not exported"))) {
-                                    LOGGER.error(String.format(
-                                            "receiving event error! %s.%s: %s", contract, handler, str));
+                                if (callCount.get() == TIMEOUT_COUNT
+                                        || (result.status == ContractResult.Status.Exception
+                                                && result.result.toString()
+                                                        .contains("not exported"))) {
+                                    LOGGER.error(String.format("receiving event error! %s.%s: %s",
+                                            contract, handler, str));
                                     rc.onResult((String) null);
                                 } else {
                                     ret = false;
                                 }
                             }
                         } catch (Exception e) {
-                            LOGGER.error(String.format(
-                                    "receiving event error! %s.%s: %s", contract, handler, e.getMessage()));
+                            LOGGER.error(String.format("receiving event error! %s.%s: %s", contract,
+                                    handler, e.getMessage()));
                             rc.onResult((String) null);
                         }
                         callCount.incrementAndGet();
@@ -119,10 +122,7 @@ public class ContractConsumer implements IEventConsumer {
                         }
                     }
                 }, (reqID, hashStr) -> {
-                }),
-                500L,
-                2500L,
-                TimeUnit.MILLISECONDS);
+                }), 500L, 2500L, TimeUnit.MILLISECONDS);
         scheduledFutures.put(getId(), future);
         synchronized (flag) {
             flag.notify();

src/main/java/org/bdware/sc/event/clients/IEventConsumer.java

@@ -1,7 +1,6 @@
 package org.bdware.sc.event.clients;
 
 import org.bdware.sc.conn.ResultCallback;
-import org.bdware.sc.event.Event;
 
 public interface IEventConsumer {
     String getId();
@@ -13,8 +12,6 @@ public interface IEventConsumer {
     void competeSub(Object msg, ResultCallback rc, String... options);
 
     enum ConsumerType {
-        Contract,
-        Node,
-        WSClient
+        Contract, Node, WSClient
     }
 }

src/main/java/org/bdware/sc/event/clients/WSClientConsumer.java

@@ -47,6 +47,5 @@ public class WSClientConsumer implements IEventConsumer {
     }
 
     @Override
-    public void competeSub(Object msg, ResultCallback rc, String... options) {
-    }
+    public void competeSub(Object msg, ResultCallback rc, String... options) {}
 }

src/main/java/org/bdware/sc/handler/ManagerHandler.java

@@ -6,7 +6,6 @@ import org.bdware.sc.bean.ContractRequest;
 import org.bdware.sc.conn.Description;
 import org.bdware.sc.conn.MsgHandler;
 import org.bdware.sc.conn.ResultCallback;
-import org.bdware.sc.event.REvent;
 import org.bdware.sc.get.GetMessage;
 import org.bdware.sc.util.JsonUtil;
 
@@ -35,8 +34,7 @@ public class ManagerHandler extends MsgHandler {
         cb.onResult(cm.getTimesOfExecution(msg.arg));
     }
 
-    @Description(
-            value = "execute Contract, {\"contractID\":\"112233\",\"arg\":\"\"}",
+    @Description(value = "execute Contract, {\"contractID\":\"112233\",\"arg\":\"\"}",
             isAsync = true)
     public void executeContract(GetMessage msg, ResultCallback cb) {
         ContractRequest c;
@@ -89,4 +87,10 @@ public class ManagerHandler extends MsgHandler {
         ContractRequest cr = JsonUtil.fromJson(msg.arg, ContractRequest.class);
         cb.onResult(cm.addDEMember(cr.getContractID(), cr.getArg().getAsString()));
     }
+
+    @Description("add distributed execution member, sample: {contractID:id/name, arg:ipAndPort}")
+    public void getLedgerParams(GetMessage msg, ResultCallback cb) {
+
+        cb.onResult(ContractManager.instance.getLedgerParams().toString());
+    }
 }

src/main/java/org/bdware/sc/units/ContractRecord.java

@@ -4,81 +4,51 @@ package org.bdware.sc.units;
 import java.io.*;
 
 /*
- * 节点启动后记录自己的units信息和合约的一些信息
- * 节点重新上线后，NC发要求让其恢复，则从本地读取自己的这些信息进行恢复
+ * 节点启动后记录自己的units信息和合约的一些信息 节点重新上线后，NC发要求让其恢复，则从本地读取自己的这些信息进行恢复
  */
 public class ContractRecord implements Serializable {
-/*    private static final long serialVersionUID = 704775241674568688L;
-
-    public transient RecoverFlag recoverFlag = RecoverFlag.Fine;
-
-    public String contractID;
-    public String contractName;
-    public String key;
-    public String contractpubKey;
-    public ContractType type;
-    public int copies = 1;
-    public int lastExeSeq = -1;
-    public boolean isPrivate = false;
-    public String pubKeyPath;
-    public String ypkName;
-
-    //public Map<String,String> members;   //k-udpid,v-udpaddress
-
-    public String memory = "";
-
-    //JavaScriptEntry
-    public String invokeID;
-
-    public ContractRecord(String id){
-        this.contractID = id;
-    }
-
-    public ContractRecord(String id,String contractName,String key,String contractpubKey,ContractType type,int copies){
-        this.contractID = id;
-        this.contractName = contractName;
-        this.key = key;
-        this.contractpubKey = contractpubKey;
-        this.type = type;
-        this.copies = copies;
-    }
-
-    public void printContent(){
-        System.out.println("==========ContractRecord========");
-
-        System.out.println("contractID=" + contractID == null ? "null" : contractID);
-        System.out.println("contractName=" + contractName == null ? "null" : contractName);
-        System.out.println("key=" + key == null ? "null" : key);
-        System.out.println("contractPubKey=" + contractpubKey == null ? "null" : contractpubKey);
-        System.out.println("type=" + type == null ? "null" : type);
-        System.out.println("lastExeSeq=" + lastExeSeq == null ? "null" : lastExeSeq);
-        System.out.println("invokeID=" + invokeID == null ? "null" : invokeID);
-        System.out.println("copies=" + copies);
-        System.out.println("isPrivate=" + isPrivate);
-        System.out.println("pubKeyPath=" + pubKeyPath == null ? "null" : pubKeyPath);
-        System.out.println("ypkName=" + ypkName == null ? "null" : ypkName);
-        if(members != null){
-            for(String k : members.keySet()){
-                System.out.println("members " + k + "-" + members.get(k));
-            }
-        }
-        System.out.println("memory=" + memory == null ? "null" : memory);
-        System.out.println("==========ContractRecord print finish=======");
-    }
-
-    public static void getContentFromFile(String path){
-        File file = new File(path);
-        try{
-            FileInputStream os = new FileInputStream(file);
-            ObjectInputStream oos = new ObjectInputStream(os);
-            ContractRecord record = (ContractRecord) oos.readObject();
-            record.printContent();
-        } catch (FileNotFoundException e) {
-            e.printStackTrace();
-        } catch (IOException e) {
-            e.printStackTrace();
-        } catch (ClassNotFoundException e) {
-            e.printStackTrace();
-        }
-    }*/
+    /*
+     * private static final long serialVersionUID = 704775241674568688L;
+     * 
+     * public transient RecoverFlag recoverFlag = RecoverFlag.Fine;
+     * 
+     * public String contractID; public String contractName; public String key; public String
+     * contractpubKey; public ContractType type; public int copies = 1; public int lastExeSeq = -1;
+     * public boolean isPrivate = false; public String pubKeyPath; public String ypkName;
+     * 
+     * //public Map<String,String> members; //k-udpid,v-udpaddress
+     * 
+     * public String memory = "";
+     * 
+     * //JavaScriptEntry public String invokeID;
+     * 
+     * public ContractRecord(String id){ this.contractID = id; }
+     * 
+     * public ContractRecord(String id,String contractName,String key,String
+     * contractpubKey,ContractType type,int copies){ this.contractID = id; this.contractName =
+     * contractName; this.key = key; this.contractpubKey = contractpubKey; this.type = type;
+     * this.copies = copies; }
+     * 
+     * public void printContent(){ System.out.println("==========ContractRecord========");
+     * 
+     * System.out.println("contractID=" + contractID == null ? "null" : contractID);
+     * System.out.println("contractName=" + contractName == null ? "null" : contractName);
+     * System.out.println("key=" + key == null ? "null" : key); System.out.println("contractPubKey="
+     * + contractpubKey == null ? "null" : contractpubKey); System.out.println("type=" + type ==
+     * null ? "null" : type); System.out.println("lastExeSeq=" + lastExeSeq == null ? "null" :
+     * lastExeSeq); System.out.println("invokeID=" + invokeID == null ? "null" : invokeID);
+     * System.out.println("copies=" + copies); System.out.println("isPrivate=" + isPrivate);
+     * System.out.println("pubKeyPath=" + pubKeyPath == null ? "null" : pubKeyPath);
+     * System.out.println("ypkName=" + ypkName == null ? "null" : ypkName); if(members != null){
+     * for(String k : members.keySet()){ System.out.println("members " + k + "-" + members.get(k));
+     * } } System.out.println("memory=" + memory == null ? "null" : memory);
+     * System.out.println("==========ContractRecord print finish======="); }
+     * 
+     * public static void getContentFromFile(String path){ File file = new File(path); try{
+     * FileInputStream os = new FileInputStream(file); ObjectInputStream oos = new
+     * ObjectInputStream(os); ContractRecord record = (ContractRecord) oos.readObject();
+     * record.printContent(); } catch (FileNotFoundException e) { e.printStackTrace(); } catch
+     * (IOException e) { e.printStackTrace(); } catch (ClassNotFoundException e) {
+     * e.printStackTrace(); } }
+     */
 }

src/main/java/org/bdware/sc/units/ContractUnitController.java

@@ -16,9 +16,7 @@ public class ContractUnitController {
     ContractManager manager;
     SequencingAlgorithmFactory algorithmFactory;
 
-    public ContractUnitController(
-            TrustfulExecutorConnection connection,
-            ContractManager manager,
+    public ContractUnitController(TrustfulExecutorConnection connection, ContractManager manager,
             SequencingAlgorithmFactory factory) {
         this.connection = connection;
         this.manager = manager;
@@ -39,13 +37,8 @@ public class ContractUnitController {
                 unit.node2member = new HashMap<>();
                 units.put(req.contract.getID(), unit);
 
-                System.out.println(
-                        "[ContractUnitController] startContract:"
-                                + result
-                                + " isMaster:"
-                                + req.isMaster
-                                + " cid:"
-                                + req.contract.getID());
+                System.out.println("[ContractUnitController] startContract:" + result + " isMaster:"
+                        + req.isMaster + " cid:" + req.contract.getID());
                 break;
             case AddMember:
                 LOGGER.debug("contractID:" + cumsg.getContractID());
@@ -68,12 +61,8 @@ public class ContractUnitController {
                 unit.node2member = new HashMap<>();
                 units.put(req2.contract.getID(), unit);
 
-                System.out.println(
-                        "[ContractUnitController] startContract:"
-                                + " isMaster:"
-                                + req2.isMaster
-                                + " cid:"
-                                + req2.contract.getID());
+                System.out.println("[ContractUnitController] startContract:" + " isMaster:"
+                        + req2.isMaster + " cid:" + req2.contract.getID());
                 break;
         }
     }
@@ -148,16 +137,9 @@ public class ContractUnitController {
         }
 
         public String getDisplayStr() {
-            return "pSize:"
-                    + (prepare == null ? "null" : prepare.size())
-                    + " cSize:"
-                    + (commit == null ? "null" : commit.size())
-                    + " isSendCommit:"
-                    + isSendCommit
-                    + " isSendReply:"
-                    + isSendReply
-                    + " buffSize:"
-                    + buff.size();
+            return "pSize:" + (prepare == null ? "null" : prepare.size()) + " cSize:"
+                    + (commit == null ? "null" : commit.size()) + " isSendCommit:" + isSendCommit
+                    + " isSendReply:" + isSendReply + " buffSize:" + buff.size();
         }
     }
 }

src/main/java/org/bdware/sc/units/ContractUnitMessage.java

@@ -61,7 +61,8 @@ public class ContractUnitMessage implements Serializable {
     // }
 
     public boolean verify(ContractUnitMember member) {
-		ECPublicKeyParameters param = BCECUtil.createECPublicKeyFromStrParameters(member.pubKey,SM2Util.CURVE,SM2Util.DOMAIN_PARAMS);
+        ECPublicKeyParameters param = BCECUtil.createECPublicKeyFromStrParameters(member.pubKey,
+                SM2Util.CURVE, SM2Util.DOMAIN_PARAMS);
 
         return SM2Util.verify(param, content, signature.getBytes());
     }

src/main/java/org/bdware/sc/units/ContractUnitType.java

@@ -5,6 +5,7 @@ import java.io.Serializable;
 public enum ContractUnitType implements Serializable {
 
     Start(0), AddMember(1), Sequencing(2), Unknown(3);
+
     private int type;
 
     private ContractUnitType(int i) {

src/main/java/org/bdware/sc/units/MultiContractMeta.java

@@ -101,10 +101,9 @@ public class MultiContractMeta implements IDSerializable {
 
     public void setLastExeSeq(int lastExeSeq) {
         this.lastExeSeq.set(lastExeSeq);
-        if (KeyValueDBUtil.instance.containsKey(
-                CMTables.LastExeSeq.toString(), contractID)) { // 如果现在是Stable模式就同步刷到磁盘
-            KeyValueDBUtil.instance.setValue(
-                    CMTables.LastExeSeq.toString(), contractID, String.valueOf(lastExeSeq));
+        if (KeyValueDBUtil.instance.containsKey(CMTables.LastExeSeq.toString(), contractID)) { // 如果现在是Stable模式就同步刷到磁盘
+            KeyValueDBUtil.instance.setValue(CMTables.LastExeSeq.toString(), contractID,
+                    String.valueOf(lastExeSeq));
         }
     }
 
@@ -154,19 +153,18 @@ public class MultiContractMeta implements IDSerializable {
     public String[] getMembers() {
         return members;
     }
+
     public String joinMembers(String delimiter) {
         StringBuilder sb = new StringBuilder();
         if (members.length > 0)
             sb.append(members[0]);
-        else return "";
+        else
+            return "";
         for (int i = 1; i < members.length; i++) {
             sb.append(delimiter).append(members[i]);
         }
         return sb.toString();
     }
-    public void setMembers(String[] m) {
-        members = m;
-    }
 
     public void setMembers(JsonArray members) {
         String[] copied = new String[members.size()];

src/main/java/org/bdware/sc/units/RespCache.java

@@ -24,7 +24,8 @@ public class RespCache {
                 } else {
                     waiter.wait(5000L);
                     timeout &= waiter.get() * 2 > count;
-                    if (!timeout) waiter.notifyAll();
+                    if (!timeout)
+                        waiter.notifyAll();
                     return timeout;
                 }
             }

src/main/java/org/bdware/sc/util/DHTUtil.java

@@ -25,9 +25,8 @@ public class DHTUtil {
 
         String hash = HashUtil.sha3ToFixedLen(key, nodes[0].length() - 2);
 
-        int l = 0, r = nodes.length - 1, m,
-                h2l = hash.compareTo(nodes[l].substring(2)), r2h = nodes[r].substring(2).compareTo(hash),
-                h2m;
+        int l = 0, r = nodes.length - 1, m, h2l = hash.compareTo(nodes[l].substring(2)),
+                r2h = nodes[r].substring(2).compareTo(hash), h2m;
         BigInteger bigH = null;
         String selected;
         do {
@@ -42,8 +41,7 @@ public class DHTUtil {
                 break;
             }
             if (l + 1 == r) {
-                BigInteger bigL = getBigInteger(nodes[l]),
-                        bigR = getBigInteger(nodes[r]);
+                BigInteger bigL = getBigInteger(nodes[l]), bigR = getBigInteger(nodes[r]);
                 bigH = new BigInteger(hash, 16);
                 if (bigR.subtract(bigH).compareTo(bigH.subtract(bigL)) > -1) {
                     selected = nodes[l];

src/main/java/org/bdware/server/trustedmodel/ContractExecutor.java

@@ -5,12 +5,16 @@ import org.bdware.sc.conn.Node;
 import org.bdware.sc.conn.OnHashCallback;
 import org.bdware.sc.conn.ResultCallback;
 
+import java.util.Map;
+
 public interface ContractExecutor {
     void execute(String requestID, ContractRequest req, ResultCallback rcb, OnHashCallback hcb);
 
-    default void close() {
-    }
+    default void onRecover(Map<String, Object> args) {}
 
-    default void onSyncMessage(Node node, byte[] data) {
-    }
+    default void onDeliverBlock(String data) {}
+
+    default void close() {}
+
+    default void onSyncMessage(Node node, byte[] data) {}
 }

src/main/java/org/bdware/server/trustedmodel/ContractUnitStatus.java

@@ -3,6 +3,5 @@ package org.bdware.server.trustedmodel;
 import java.io.Serializable;
 
 public enum ContractUnitStatus implements Serializable {
-    CommonMode,
-    StableMode;
+    CommonMode, StableMode;
 }

src/main/java/org/bdware/server/trustedmodel/MultiReqSeq.java

@@ -0,0 +1,11 @@
+package org.bdware.server.trustedmodel;
+
+public class MultiReqSeq {
+    public final int seq;
+    public final long startTime;
+
+    public MultiReqSeq(int s) {
+        seq = s;
+        startTime = System.currentTimeMillis();
+    }
+}

src/main/java/org/bdware/server/trustedmodel/SingleNodeExecutor.java

@@ -14,7 +14,8 @@ public class SingleNodeExecutor implements ContractExecutor {
     }
 
     @Override
-    public void execute(String requestID, ContractRequest req, ResultCallback rcb, OnHashCallback hcb) {
+    public void execute(String requestID, ContractRequest req, ResultCallback rcb,
+            OnHashCallback hcb) {
         cm.executeLocallyAsync(req, rcb, hcb);
     }
 }

src/test/java/org/bdware/sc/test/ContractManagerTest.java

@@ -2,9 +2,11 @@ package org.bdware.sc.test;
 
 import org.bdware.sc.ContractManager;
 
+
 public class ContractManagerTest {
     public static void main(String[] args) {
         ContractManager.yjsPath = "./generatedlib/yjs.jar";
         ContractManager.instance = new ContractManager();
     }
+
 }

src/test/java/org/bdware/sc/test/ReflectionTest.java

@@ -0,0 +1,20 @@
+package org.bdware.sc.test;
+
+import com.google.gson.Gson;
+
+import java.lang.reflect.Method;
+
+public class ReflectionTest {
+    public static class Test {
+        public static void go(String... args) {
+            System.out.println(new Gson().toJson(args));
+        }
+    }
+
+    @org.junit.Test
+    public void go() throws Exception {
+        Method m = Test.class.getDeclaredMethod("go", String[].class);
+        String[] abc = new String[] {"ab", "cd"};
+        m.invoke(null, new Object[] {abc});
+    }
+}

src/test/java/org/bdware/sc/units/RespCacheTest.java

@@ -12,17 +12,15 @@ public class RespCacheTest {
             new Thread(() -> {
                 try {
                     Thread.sleep(j * 1000);
-                    if (j > 2) Thread.sleep(6 * 1000);
+                    if (j > 2)
+                        Thread.sleep(6 * 1000);
 
                 } catch (InterruptedException e) {
                     e.printStackTrace();
                 }
                 boolean waitResult = cache.waitForHalf();
-                System.out.println(
-                        "tid:"
-                                + Thread.currentThread().getId()
-                                + " reach target, waitResult:"
-                                + waitResult);
+                System.out.println("tid:" + Thread.currentThread().getId()
+                        + " reach target, waitResult:" + waitResult);
             }).start();
         }
         Thread.sleep(20000);
@@ -37,17 +35,15 @@ public class RespCacheTest {
             new Thread(() -> {
                 try {
                     Thread.sleep(j * 1000);
-                    if (j > 2) Thread.sleep(1900);
+                    if (j > 2)
+                        Thread.sleep(1900);
 
                 } catch (InterruptedException e) {
                     e.printStackTrace();
                 }
                 boolean waitResult = cache.waitForHalf();
-                System.out.println(
-                        "tid:"
-                                + Thread.currentThread().getId()
-                                + " reach target, waitResult:"
-                                + waitResult);
+                System.out.println("tid:" + Thread.currentThread().getId()
+                        + " reach target, waitResult:" + waitResult);
             }).start();
         }
         Thread.sleep(20000);
@@ -66,11 +62,8 @@ public class RespCacheTest {
                     e.printStackTrace();
                 }
                 boolean waitResult = cache.waitForHalf();
-                System.out.println(
-                        "tid:"
-                                + Thread.currentThread().getId()
-                                + " reach target, waitResult:"
-                                + waitResult);
+                System.out.println("tid:" + Thread.currentThread().getId()
+                        + " reach target, waitResult:" + waitResult);
             }).start();
         }
         Thread.sleep(10000);