Fix alarm issues.

oap-server/server-alarm-plugin/src/main/java/org/apache/skywalking/oap/server/core/alarm/provider/AlarmCore.java

@@ -28,6 +28,8 @@ import org.apache.skywalking.oap.server.core.alarm.AlarmCallback;
 import org.apache.skywalking.oap.server.core.alarm.AlarmMessage;
 import org.joda.time.LocalDateTime;
 import org.joda.time.Minutes;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 /**
  * Alarm core includes metric values in certain time windows based on alarm settings. By using its internal timer
@@ -36,6 +38,8 @@ import org.joda.time.Minutes;
  * @author wusheng
  */
 public class AlarmCore {
+    private static final Logger logger = LoggerFactory.getLogger(AlarmCore.class);
+
     private Map<String, List<RunningRule>> runningContext;
     private LocalDateTime lastExecuteTime;
 
@@ -62,8 +66,8 @@ public class AlarmCore {
     public void start(List<AlarmCallback> allCallbacks) {
         LocalDateTime now = LocalDateTime.now();
         lastExecuteTime = now;
-        runningContext.values().forEach(ruleList -> ruleList.forEach(runningRule -> runningRule.start(now)));
         Executors.newSingleThreadScheduledExecutor().scheduleAtFixedRate(() -> {
+            try {
                 List<AlarmMessage> alarmMessageList = new ArrayList<>(30);
                 runningContext.values().forEach(ruleList -> ruleList.forEach(runningRule -> {
                     LocalDateTime checkTime = LocalDateTime.now();
@@ -71,20 +75,22 @@ public class AlarmCore {
                     if (minutes > 0) {
                         runningRule.moveTo(checkTime);
                         /**
-                     * Don't run in the first quarter per min, avoid to trigger alarm.
+                         * Don't run in the first quarter per min, avoid to trigger false alarm.
                          */
                         if (checkTime.getSecondOfMinute() > 15) {
-                        AlarmMessage alarmMessage = runningRule.check();
-                        if (alarmMessage != AlarmMessage.NONE) {
-                            alarmMessageList.add(alarmMessage);
-                        }
+                            alarmMessageList.addAll(runningRule.check());
                             // Set the last execute time, and make sure the second is `00`, such as: 18:30:00
                             lastExecuteTime = checkTime.minusSeconds(checkTime.getSecondOfMinute());
                         }
                     }
                 }));
 
+                if (alarmMessageList.size() > 0) {
                     allCallbacks.forEach(callback -> callback.doAlarm(alarmMessageList));
+                }
+            } catch (Exception e) {
+                logger.error(e.getMessage(), e);
+            }
         }, 10, 10, TimeUnit.SECONDS);
     }
 }

oap-server/server-alarm-plugin/src/main/java/org/apache/skywalking/oap/server/core/alarm/provider/AlarmRule.java

@@ -18,6 +18,7 @@
 
 package org.apache.skywalking.oap.server.core.alarm.provider;
 
+import java.util.ArrayList;
 import lombok.AccessLevel;
 import lombok.Getter;
 import lombok.Setter;
@@ -31,6 +32,7 @@ public class AlarmRule {
     private String alarmRuleName;
 
     private String indicatorName;
+    private ArrayList includeNames;
     private String threshold;
     private String op;
     private int period;

oap-server/server-alarm-plugin/src/main/java/org/apache/skywalking/oap/server/core/alarm/provider/RulesReader.java

@@ -58,7 +58,9 @@ public class RulesReader {
                     if (indicatorName == null) {
                         throw new IllegalArgumentException("indicator-name can't be null");
                     }
+
                     alarmRule.setIndicatorName((String)indicatorName);
+                    alarmRule.setIncludeNames((ArrayList)settings.getOrDefault("include-names", new ArrayList(0)));
                     alarmRule.setThreshold(settings.get("threshold").toString());
                     alarmRule.setOp((String)settings.get("op"));
                     alarmRule.setPeriod((Integer)settings.getOrDefault("period", 1));

oap-server/server-alarm-plugin/src/main/java/org/apache/skywalking/oap/server/core/alarm/provider/RunningRule.java

@@ -18,10 +18,12 @@
 
 package org.apache.skywalking.oap.server.core.alarm.provider;
 
+import java.util.ArrayList;
 import java.util.LinkedList;
 import java.util.List;
+import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.locks.ReentrantLock;
-import org.apache.skywalking.oap.server.core.alarm.AlarmCallback;
 import org.apache.skywalking.oap.server.core.alarm.AlarmMessage;
 import org.apache.skywalking.oap.server.core.alarm.MetaInAlarm;
 import org.apache.skywalking.oap.server.core.analysis.indicator.DoubleValueHolder;
@@ -46,22 +48,27 @@ public class RunningRule {
     private static DateTimeFormatter TIME_BUCKET_FORMATTER = DateTimeFormat.forPattern("yyyyMMddHHmm");
 
     private String ruleName;
+    private int period;
+    private String indicatorName;
     private final Threshold threshold;
     private final OP op;
     private final int countThreshold;
     private final int silencePeriod;
     private int counter;
     private int silenceCountdown;
-    private Window window;
-    private volatile boolean isStarted = false;
+    private Map<MetaInAlarm, Window> windows;
     private volatile IndicatorValueType valueType;
     private Scope targetScope;
+    private List<String> includeNames;
 
     public RunningRule(AlarmRule alarmRule) {
+        indicatorName = alarmRule.getIndicatorName();
         this.ruleName = alarmRule.getAlarmRuleName();
 
         // Init the empty window for alarming rule.
-        window = new Window(alarmRule.getPeriod());
+        windows = new ConcurrentHashMap<>();
+
+        period = alarmRule.getPeriod();
 
         threshold = new Threshold(alarmRule.getAlarmRuleName(), alarmRule.getThreshold());
         op = OP.get(alarmRule.getOp());
@@ -70,6 +77,8 @@ public class RunningRule {
         this.silencePeriod = alarmRule.getSilencePeriod();
         // -1 means silence countdown is not running.
         silenceCountdown = -1;
+
+        this.includeNames = alarmRule.getIncludeNames();
     }
 
     /**
@@ -79,7 +88,8 @@ public class RunningRule {
      * @param indicator
      */
     public void in(MetaInAlarm meta, Indicator indicator) {
-        if (!isStarted) {
+        if (!meta.getIndicatorName().equals(indicatorName)) {
+            //Don't match rule, exit.
             return;
         }
 
@@ -98,18 +108,21 @@ public class RunningRule {
         }
 
         if (valueType != null) {
-            window.add(indicator);
+            Window window = windows.get(meta);
+            if (window == null) {
+                window = new Window(period);
+                Window ifAbsent = windows.putIfAbsent(meta, window);
+                if (ifAbsent == null) {
+                    LocalDateTime timebucket = TIME_BUCKET_FORMATTER.parseLocalDateTime(indicator.getTimeBucket() + "");
+                    window.moveTo(timebucket);
+                } else {
+                    window = windows.get(meta);
                 }
+
             }
 
-    /**
-     * Start this rule in running mode.
-     *
-     * @param current
-     */
-    public void start(LocalDateTime current) {
-        window.start(current);
-        isStarted = true;
+            window.add(indicator);
+        }
     }
 
     /**
@@ -118,14 +131,21 @@ public class RunningRule {
      * @param targetTime of moving target
      */
     public void moveTo(LocalDateTime targetTime) {
-        window.moveTo(targetTime);
+        windows.values().forEach(window -> window.moveTo(targetTime));
     }
 
     /**
      * Check the conditions, decide to whether trigger alarm.
      */
-    public AlarmMessage check() {
-        boolean isMatched = window.isMatch();
+    public List<AlarmMessage> check() {
+        List<AlarmMessage> alarmMessageList = new ArrayList<>(30);
+
+        windows.values().forEach(window -> {
+            AlarmMessage alarmMessage = window.checkAlarm();
+            if (alarmMessage != AlarmMessage.NONE) {
+                alarmMessageList.add(alarmMessage);
+            }
+        });
 
         /**
          * When
@@ -133,10 +153,11 @@ public class RunningRule {
          * 2. Counter reaches the count threshold;
          * 3. Isn't in silence stage, judged by SilenceCountdown(!=0).
          */
-        if (isMatched) {
+        if (alarmMessageList.size() > 0) {
             counter++;
             if (counter >= countThreshold && silenceCountdown < 1) {
-                return triggerAlarm();
+                silenceCountdown = silencePeriod;
+                return alarmMessageList;
             } else {
                 silenceCountdown--;
             }
@@ -146,16 +167,7 @@ public class RunningRule {
                 counter--;
             }
         }
-        return AlarmMessage.NONE;
-    }
-
-    /**
-     * Trigger alarm callbacks.
-     */
-    private AlarmMessage triggerAlarm() {
-        silenceCountdown = silencePeriod;
-        AlarmMessage message = new AlarmMessage();
-        return message;
+        return new ArrayList<>(0);
     }
 
     /**
@@ -176,13 +188,13 @@ public class RunningRule {
             init();
         }
 
-        public void start(LocalDateTime current) {
-            this.endTime = current;
-        }
-
         public void moveTo(LocalDateTime current) {
             lock.lock();
             try {
+                if (endTime == null) {
+                    init();
+                    endTime = current;
+                } else {
                     int minutes = Minutes.minutesBetween(endTime, current).getMinutes();
                     if (minutes <= 0) {
                         return;
@@ -197,6 +209,7 @@ public class RunningRule {
                         }
                     }
                     endTime = current;
+                }
             } finally {
                 lock.unlock();
             }
@@ -216,9 +229,8 @@ public class RunningRule {
             lock.lock();
             try {
                 if (minutes < 0) {
-                    // At any moment, should NOT be here
-                    // Add this code just because of my obsession :P
-                    return;
+                    moveTo(timebucket);
+                    minutes = 0;
                 }
 
                 if (minutes >= values.size()) {
@@ -233,7 +245,16 @@ public class RunningRule {
             }
         }
 
-        public boolean isMatch() {
+        public AlarmMessage checkAlarm() {
+            if (isMatch()) {
+                AlarmMessage message = new AlarmMessage();
+                return message;
+            } else {
+                return AlarmMessage.NONE;
+            }
+        }
+
+        private boolean isMatch() {
             int matchCount = 0;
             for (Indicator indicator : values) {
                 if (indicator == null) {

oap-server/server-alarm-plugin/src/test/java/org/apache/skywalking/oap/server/core/alarm/provider/AlarmCoreTest.java

@@ -65,7 +65,7 @@ public class AlarmCoreTest {
                 if (isAdd[0]) {
                     checkTime.add(LocalDateTime.now());
                 }
-                return null;
+                return new ArrayList<>(0);
             }
         }).when(mockRule).check();
 
@@ -81,6 +81,9 @@ public class AlarmCoreTest {
                 Assert.assertTrue(checkTimePoints(checkTime));
                 break;
             }
+            if(i == 9){
+                Assert.assertTrue(false);
+            }
         }
     }
 

oap-server/server-alarm-plugin/src/test/java/org/apache/skywalking/oap/server/core/alarm/provider/AlarmRuleInitTest.java

@@ -33,6 +33,9 @@ public class AlarmRuleInitTest {
         Assert.assertEquals(2, ruleList.size());
         Assert.assertEquals("85", ruleList.get(1).getThreshold());
         Assert.assertEquals("endpoint_percent_rule", ruleList.get(0).getAlarmRuleName());
+        Assert.assertEquals(0, ruleList.get(0).getIncludeNames().size());
+
+        Assert.assertEquals("service_b", ruleList.get(1).getIncludeNames().get(1));
 
         List<String> rulesWebhooks = rules.getWebhooks();
         Assert.assertEquals(2, rulesWebhooks.size());

oap-server/server-alarm-plugin/src/test/java/org/apache/skywalking/oap/server/core/alarm/provider/RunningRuleTest.java

@@ -20,6 +20,8 @@ package org.apache.skywalking.oap.server.core.alarm.provider;
 
 import java.util.LinkedList;
 import java.util.List;
+import java.util.Map;
+import java.util.Objects;
 import org.apache.skywalking.oap.server.core.alarm.AlarmCallback;
 import org.apache.skywalking.oap.server.core.alarm.AlarmMessage;
 import org.apache.skywalking.oap.server.core.alarm.MetaInAlarm;
@@ -55,10 +57,13 @@ public class RunningRuleTest {
         alarmRule.setPeriod(15);
 
         RunningRule runningRule = new RunningRule(alarmRule);
-        LocalDateTime startTime = TIME_BUCKET_FORMATTER.parseLocalDateTime("201808301440");
-        runningRule.start(startTime);
+        LocalDateTime startTime = TIME_BUCKET_FORMATTER.parseLocalDateTime("201808301434");
+        long timeInPeriod1 = 201808301434L;
+        runningRule.in(getMetaInAlarm(123), getIndicator(timeInPeriod1, 70));
+
+        Map<MetaInAlarm, RunningRule.Window> windows = Whitebox.getInternalState(runningRule, "windows");
 
-        RunningRule.Window window = Whitebox.getInternalState(runningRule, "window");
+        RunningRule.Window window = windows.get(getMetaInAlarm(123));
         LocalDateTime endTime = Whitebox.getInternalState(window, "endTime");
         int period = Whitebox.getInternalState(window, "period");
         LinkedList<Indicator> indicatorBuffer = Whitebox.getInternalState(window, "values");
@@ -81,23 +86,22 @@ public class RunningRuleTest {
         RunningRule runningRule = new RunningRule(alarmRule);
         LocalDateTime startTime = TIME_BUCKET_FORMATTER.parseLocalDateTime("201808301440");
 
-        runningRule.start(startTime);
-
         long timeInPeriod1 = 201808301434L;
         long timeInPeriod2 = 201808301436L;
         long timeInPeriod3 = 201808301438L;
-        runningRule.in(getMetaInAlarm(), getIndicator(timeInPeriod1, 70));
-        runningRule.in(getMetaInAlarm(), getIndicator(timeInPeriod2, 71));
-        runningRule.in(getMetaInAlarm(), getIndicator(timeInPeriod3, 74));
+
+        runningRule.in(getMetaInAlarm(123), getIndicator(timeInPeriod1, 70));
+        runningRule.in(getMetaInAlarm(123), getIndicator(timeInPeriod2, 71));
+        runningRule.in(getMetaInAlarm(123), getIndicator(timeInPeriod3, 74));
 
         // check at 201808301440
-        Assert.assertEquals(AlarmMessage.NONE, runningRule.check());
+        Assert.assertEquals(0, runningRule.check().size());
         runningRule.moveTo(TIME_BUCKET_FORMATTER.parseLocalDateTime("201808301441"));
         // check at 201808301441
-        Assert.assertEquals(AlarmMessage.NONE, runningRule.check());
+        Assert.assertEquals(0, runningRule.check().size());
         runningRule.moveTo(TIME_BUCKET_FORMATTER.parseLocalDateTime("201808301442"));
         // check at 201808301442
-        Assert.assertNotEquals(AlarmMessage.NONE, runningRule.check());
+        Assert.assertEquals(1, runningRule.check().size());
 
     }
 
@@ -123,27 +127,26 @@ public class RunningRuleTest {
         };
         LinkedList<AlarmCallback> callbackList = new LinkedList<>();
         callbackList.add(assertCallback);
-        runningRule.start(startTime);
 
         long timeInPeriod1 = 201808301434L;
         long timeInPeriod2 = 201808301436L;
         long timeInPeriod3 = 201808301438L;
         long timeInPeriod4 = 201808301432L;
         long timeInPeriod5 = 201808301440L;
-        runningRule.in(getMetaInAlarm(), getIndicator(timeInPeriod1, 70));
-        runningRule.in(getMetaInAlarm(), getIndicator(timeInPeriod2, 71));
-        runningRule.in(getMetaInAlarm(), getIndicator(timeInPeriod3, 74));
-        runningRule.in(getMetaInAlarm(), getIndicator(timeInPeriod4, 90));
-        runningRule.in(getMetaInAlarm(), getIndicator(timeInPeriod5, 95));
+        runningRule.in(getMetaInAlarm(123), getIndicator(timeInPeriod1, 70));
+        runningRule.in(getMetaInAlarm(123), getIndicator(timeInPeriod2, 71));
+        runningRule.in(getMetaInAlarm(123), getIndicator(timeInPeriod3, 74));
+        runningRule.in(getMetaInAlarm(123), getIndicator(timeInPeriod4, 90));
+        runningRule.in(getMetaInAlarm(123), getIndicator(timeInPeriod5, 95));
 
         // check at 201808301440
-        Assert.assertEquals(AlarmMessage.NONE, runningRule.check());
+        Assert.assertEquals(0, runningRule.check().size());
         runningRule.moveTo(TIME_BUCKET_FORMATTER.parseLocalDateTime("201808301442"));
         // check at 201808301441
-        Assert.assertEquals(AlarmMessage.NONE, runningRule.check());
+        Assert.assertEquals(0, runningRule.check().size());
         runningRule.moveTo(TIME_BUCKET_FORMATTER.parseLocalDateTime("201808301443"));
         // check at 201808301442
-        Assert.assertEquals(AlarmMessage.NONE, runningRule.check());
+        Assert.assertEquals(0, runningRule.check().size());
     }
 
     @Test
@@ -158,42 +161,38 @@ public class RunningRuleTest {
         alarmRule.setSilencePeriod(2);
 
         RunningRule runningRule = new RunningRule(alarmRule);
-        LocalDateTime startTime = TIME_BUCKET_FORMATTER.parseLocalDateTime("201808301440");
-
-        runningRule.start(startTime);
 
         long timeInPeriod1 = 201808301434L;
         long timeInPeriod2 = 201808301436L;
         long timeInPeriod3 = 201808301438L;
-        runningRule.in(getMetaInAlarm(), getIndicator(timeInPeriod1, 70));
-        runningRule.in(getMetaInAlarm(), getIndicator(timeInPeriod2, 71));
-        runningRule.in(getMetaInAlarm(), getIndicator(timeInPeriod3, 74));
+        runningRule.in(getMetaInAlarm(123), getIndicator(timeInPeriod1, 70));
+        runningRule.in(getMetaInAlarm(123), getIndicator(timeInPeriod2, 71));
+        runningRule.in(getMetaInAlarm(123), getIndicator(timeInPeriod3, 74));
 
         // check at 201808301440
-        Assert.assertEquals(AlarmMessage.NONE, runningRule.check()); //check matches, no alarm
+        Assert.assertEquals(0, runningRule.check().size()); //check matches, no alarm
         runningRule.moveTo(TIME_BUCKET_FORMATTER.parseLocalDateTime("201808301441"));
         // check at 201808301441
-        Assert.assertEquals(AlarmMessage.NONE, runningRule.check()); //check matches, no alarm
+        Assert.assertEquals(0,  runningRule.check().size()); //check matches, no alarm
         runningRule.moveTo(TIME_BUCKET_FORMATTER.parseLocalDateTime("201808301442"));
         // check at 201808301442
-        Assert.assertNotEquals(AlarmMessage.NONE, runningRule.check()); //alarm
-        Assert.assertEquals(AlarmMessage.NONE, runningRule.check()); //silence, no alarm
-        Assert.assertEquals(AlarmMessage.NONE, runningRule.check()); //silence, no alarm
-        runningRule.check(); //alarm
-        Assert.assertEquals(AlarmMessage.NONE, runningRule.check()); //silence, no alarm
-        Assert.assertEquals(AlarmMessage.NONE, runningRule.check()); //silence, no alarm
-        Assert.assertNotEquals(AlarmMessage.NONE, runningRule.check()); //alarm
+        Assert.assertNotEquals(0, runningRule.check().size()); //alarm
+        Assert.assertEquals(0, runningRule.check().size()); //silence, no alarm
+        Assert.assertEquals(0, runningRule.check().size()); //silence, no alarm
+        Assert.assertNotEquals(0, runningRule.check().size()); //alarm
+        Assert.assertEquals(0, runningRule.check().size()); //silence, no alarm
+        Assert.assertEquals(0, runningRule.check().size()); //silence, no alarm
+        Assert.assertNotEquals(0, runningRule.check().size()); //alarm
     }
 
-    private MetaInAlarm getMetaInAlarm() {
+    private MetaInAlarm getMetaInAlarm(int id) {
         return new MetaInAlarm() {
-
             @Override public Scope getScope() {
                 return Scope.Service;
             }
 
             @Override public String getName() {
-                return "Service_123";
+                return "Service_" + id;
             }
 
             @Override public String getIndicatorName() {
@@ -201,12 +200,21 @@ public class RunningRuleTest {
             }
 
             @Override public int getId0() {
-                return 123;
+                return id;
             }
 
             @Override public int getId1() {
                 return 0;
             }
+
+            @Override public boolean equals(Object o) {
+                MetaInAlarm target = (MetaInAlarm)o;
+                return id == target.getId0();
+            }
+
+            @Override public int hashCode() {
+                return Objects.hash(id);
+            }
         };
     }
 

oap-server/server-alarm-plugin/src/test/resources/alarm-settings.yml

@@ -29,6 +29,10 @@ rules:
     silence-period: 10
   service_percent_rule:
     indicator-name: service_percent
+    # [Optional] Default, match all services in this indicator
+    include-names:
+      - service_a
+      - service_b
     threshold: 85
     op: <
     period: 10

oap-server/server-core/src/main/java/org/apache/skywalking/oap/server/core/alarm/AlarmMeta.java

@@ -18,6 +18,7 @@
 
 package org.apache.skywalking.oap.server.core.alarm;
 
+import java.util.Objects;
 import lombok.Getter;
 import lombok.Setter;
 import org.apache.skywalking.oap.server.core.source.Scope;
@@ -35,4 +36,18 @@ public class AlarmMeta {
         this.scope = scope;
         this.ids = new ScopeIDs(ids);
     }
+
+    @Override public boolean equals(Object o) {
+        if (this == o)
+            return true;
+        if (o == null || getClass() != o.getClass())
+            return false;
+        AlarmMeta meta = (AlarmMeta)o;
+        return Objects.equals(ids, meta.ids);
+    }
+
+    @Override public int hashCode() {
+
+        return Objects.hash(ids);
+    }
 }

oap-server/server-core/src/main/java/org/apache/skywalking/oap/server/core/alarm/MetaInAlarm.java

@@ -18,31 +18,41 @@
 
 package org.apache.skywalking.oap.server.core.alarm;
 
+import java.util.Objects;
 import org.apache.skywalking.oap.server.core.source.Scope;
 
-public interface MetaInAlarm {
-    Scope getScope();
+public abstract class MetaInAlarm {
+    public abstract Scope getScope();
 
-    String getName();
+    public abstract String getName();
 
-    String getIndicatorName();
+    public abstract String getIndicatorName();
 
     /**
-     * In most scopes, there is only id0, as primary id. Such as Service, Endpoint.
-     * But in relation, the ID includes two, actually.
-     * Such as ServiceRelation,
-     * id0 represents the source service id
+     * In most scopes, there is only id0, as primary id. Such as Service, Endpoint. But in relation, the ID includes
+     * two, actually. Such as ServiceRelation, id0 represents the source service id
      *
      * @return the primary id.
      */
-    int getId0();
+    public abstract int getId0();
 
     /**
-     * Only exist in multiple IDs case,
-     * Such as ServiceRelation,
-     * id1 represents the dest service id
+     * Only exist in multiple IDs case, Such as ServiceRelation, id1 represents the dest service id
      *
      * @return
      */
-    int getId1();
+    public abstract int getId1();
+
+    @Override public boolean equals(Object o) {
+        if (this == o)
+            return true;
+        if (o == null || getClass() != o.getClass())
+            return false;
+        MetaInAlarm that = (MetaInAlarm)o;
+        return getId0() == that.getId0() && getId1() == that.getId1();
+    }
+
+    @Override public int hashCode() {
+        return Objects.hash(getId0(), getId1());
+    }
 }

oap-server/server-core/src/main/java/org/apache/skywalking/oap/server/core/alarm/ScopeIDs.java

@@ -18,6 +18,8 @@
 
 package org.apache.skywalking.oap.server.core.alarm;
 
+import java.util.Arrays;
+
 /**
  * Scope IDs represent IDs of this scope.
  * Such as:
@@ -34,4 +36,17 @@ public class ScopeIDs {
     public int getID(int idx) {
         return ids[idx];
     }
+
+    @Override public boolean equals(Object o) {
+        if (this == o)
+            return true;
+        if (o == null || getClass() != o.getClass())
+            return false;
+        ScopeIDs ds = (ScopeIDs)o;
+        return Arrays.equals(ids, ds.ids);
+    }
+
+    @Override public int hashCode() {
+        return Arrays.hashCode(ids);
+    }
 }

oap-server/server-core/src/main/java/org/apache/skywalking/oap/server/core/alarm/ServiceMetaInAlarm.java

@@ -25,7 +25,7 @@ import org.apache.skywalking.oap.server.core.source.Scope;
 
 @Getter(AccessLevel.PUBLIC)
 @Setter(AccessLevel.PUBLIC)
-public class ServiceMetaInAlarm implements MetaInAlarm {
+public class ServiceMetaInAlarm extends MetaInAlarm {
     private String indicatorName;
 
     private int id;