GraphQL for Thermodynamic in overview page. (#1068)

* Provide graphQL for Thermodynamic in overview page.

* Finish the Thermodynamic.

* `nodes` should not be null.

* Add initialized java bean for graphql protocol.

* Add license head.

* Fixed bean definition fault.

apm-collector/apm-collector-storage/collector-storage-define/src/main/java/org/apache/skywalking/apm/collector/storage/ui/common/ValueType.java

@@ -0,0 +1,28 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package org.apache.skywalking.apm.collector.storage.ui.common;
+
+/**
+ * @author peng-yongsheng
+ */
+public enum ValueType {
+    ALL,
+    RIGHT,
+    WRONG
+}

apm-collector/apm-collector-storage/collector-storage-define/src/main/java/org/apache/skywalking/apm/collector/storage/ui/overview/Thermodynamic.java

@@ -0,0 +1,51 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package org.apache.skywalking.apm.collector.storage.ui.overview;
+
+import java.util.LinkedList;
+import java.util.List;
+
+/**
+ * @author peng-yongsheng
+ */
+public class Thermodynamic {
+
+    private List<List<Long>> nodes;
+    private int responseTimeStep;
+
+    public Thermodynamic() {
+        this.nodes = new LinkedList<>();
+    }
+
+    public List<List<Long>> getNodes() {
+        return nodes;
+    }
+
+    public void setNodes(List<List<Long>> nodes) {
+        this.nodes = nodes;
+    }
+
+    public int getResponseTimeStep() {
+        return responseTimeStep;
+    }
+
+    public void setResponseTimeStep(int responseTimeStep) {
+        this.responseTimeStep = responseTimeStep;
+    }
+}

apm-collector/apm-collector-ui/collector-ui-jetty-provider/src/main/java/org/apache/skywalking/apm/collector/ui/query/OverViewLayerQuery.java

@@ -18,21 +18,26 @@
 
 package org.apache.skywalking.apm.collector.ui.query;
 
+import java.text.ParseException;
+import java.util.List;
 import org.apache.skywalking.apm.collector.core.module.ModuleManager;
 import org.apache.skywalking.apm.collector.storage.ui.common.Duration;
 import org.apache.skywalking.apm.collector.storage.ui.common.Topology;
+import org.apache.skywalking.apm.collector.storage.ui.common.ValueType;
 import org.apache.skywalking.apm.collector.storage.ui.overview.AlarmTrend;
 import org.apache.skywalking.apm.collector.storage.ui.overview.ApplicationTPS;
 import org.apache.skywalking.apm.collector.storage.ui.overview.ClusterBrief;
 import org.apache.skywalking.apm.collector.storage.ui.overview.ConjecturalAppBrief;
+import org.apache.skywalking.apm.collector.storage.ui.overview.Thermodynamic;
 import org.apache.skywalking.apm.collector.storage.ui.service.ServiceMetric;
 import org.apache.skywalking.apm.collector.ui.graphql.Query;
-import org.apache.skywalking.apm.collector.ui.service.*;
+import org.apache.skywalking.apm.collector.ui.service.AlarmService;
+import org.apache.skywalking.apm.collector.ui.service.ApplicationService;
+import org.apache.skywalking.apm.collector.ui.service.ClusterTopologyService;
+import org.apache.skywalking.apm.collector.ui.service.NetworkAddressService;
+import org.apache.skywalking.apm.collector.ui.service.ServiceNameService;
 import org.apache.skywalking.apm.collector.ui.utils.DurationUtils;
 
-import java.text.ParseException;
-import java.util.List;
-
 import static java.util.Objects.isNull;
 
 /**
@@ -143,4 +148,8 @@ public class OverViewLayerQuery implements Query {
 
         return getApplicationService().getTopNApplicationThroughput(duration.getStep(), startTimeBucket, endTimeBucket, topN);
     }
+
+    public Thermodynamic getThermodynamic(Duration duration, ValueType type) throws ParseException {
+        return new Thermodynamic();
+    }
 }

apm-protocol/apm-ui-protocol/src/main/resources/ui-graphql/common.graphqls

@@ -124,3 +124,9 @@ type Call {
     # Unit: millisecond
     avgResponseTime: Long!
 }
+
+enum ValueType {
+    ALL,
+    RIGHT,
+    WRONG
+}

apm-protocol/apm-ui-protocol/src/main/resources/ui-graphql/overview-layer.graphqls

@@ -49,6 +49,22 @@ type ApplicationTPS {
     callsPerSec: Int!
 }
 
+type Thermodynamic {
+    # Each element in nodes represents a point in Thermodynamic Diagram
+    # And the element includes three values:
+    # 1) Time Bucket based on query duration
+    # 2) Response time index.
+    #    Response time = [responseTimeStep * index, responseTimeStep * (index+1))
+    #    The last element: [Response Time * index, MAX)
+    # 3) The number of calls in this response time duration.
+    #
+    # Example:
+    # [ [0, 0, 10], [0, 1, 43], ...]
+    # These ^^^ two represent the left bottom element, and another element above it.
+    nodes: [[Long]!]!
+    responseTimeStep: Int!
+}
+
 extend type Query {
     getClusterTopology(duration: Duration!): Topology
     getClusterBrief(duration: Duration!): ClusterBrief
@@ -56,4 +72,5 @@ extend type Query {
     getConjecturalApps(duration: Duration!): ConjecturalAppBrief
     getTopNSlowService(duration: Duration!, topN: Int!): [ServiceMetric!]!
     getTopNApplicationThroughput(duration: Duration!, topN: Int!): [ApplicationTPS!]!
+    getThermodynamic(duration: Duration!, type: ValueType!): Thermodynamic!
 }