Merge branch 'master' into feat/consistency-sdk

add second centers for event topics

build.gradle

@@ -2,7 +2,9 @@ plugins {
     id 'java'
     id 'java-library'
 }
-
+repositories {
+    mavenCentral()
+}
 sourceSets {
     main {
         java {
@@ -24,14 +26,12 @@ 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 'org.bdware.doip:doip-sdk:1.1.0'
+
     api fileTree(dir: 'libs', include: '*.jar')
     testImplementation 'junit:junit:4.13.2'
 }

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

@@ -75,7 +75,6 @@ public class ContractManager {
             Executors.newScheduledThreadPool(10);
 
 
-
     public static int logStage = 0;
     public static Sigar sigar = null; // 获取network等资源什么
 
@@ -1674,11 +1673,14 @@ public class ContractManager {
                     if (o2.id.equals(firstID)) {
                         return 1;
                     }
-                    if (o1.name != null && o2.name != null) {
-                        return o1.name.compareTo(o2.name);
-                    } else {
-                        return -1;
-                    }
+                    String str1 = o1.name;
+                    String str2 = o2.name;
+                    if (o1.name == null)
+                        str1 = "";
+                    if (o2.name == null)
+                        str2 = "";
+                    return str1.compareTo(str2);
+
                 });
     }
 

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

@@ -106,7 +106,7 @@ public class EventBroker {
                     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());
                 }
                 break;
             case UNSUBSCRIBE:

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

@@ -15,17 +15,18 @@ 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 +34,34 @@ 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
      */
-    public void subInCenter(String topic, REvent.REventSemantics semantics) {
+    public void subInCenter(String topic, REvent.REventSemantics semantics, String center) {
         if (null == instance.nodeCenterConn) {
             return;
         }
-        REvent msg = new REvent(
-                topic,
+        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)) && centers.length > 1) {
+            msg.setCenter(centers[0]);
+            instance.masterStub.deliverEvent(centers[1], JsonUtil.toJson(msg));
+        }
     }
 
     /**
@@ -61,8 +75,11 @@ 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/server/trustedmodel/ContractExecutor.java

@@ -5,9 +5,17 @@ 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 onRecover(Map<String, Object> args) {
+    }
+
+    default void onDeliverBlock(String data) {
+    }
+
     default void close() {
     }
 

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();
+    }
+}