Support thread pool metric collect

CHANGES.md

@@ -46,6 +46,7 @@ Release Notes.
 * Add env variables `SW_CLUSTER_INTERNAL_COM_HOST` and `SW_CLUSTER_INTERNAL_COM_PORT` for cluster selectors `zookeeper`,`consul`,`etcd` and `nacos`.
 * Doc update: `configuration-vocabulary`,`backend-cluster` about env variables `SW_CLUSTER_INTERNAL_COM_HOST` and `SW_CLUSTER_INTERNAL_COM_PORT`.
 * Add Python MysqlClient component ID(7013) with mapping information.
+* Support Java thread pool metrics analysis.
 
 #### UI
 

docs/en/setup/backend/backend-meter.md

@@ -51,7 +51,7 @@ Note: `$name` is the original metric name.
 ## Configuration file
 The meter receiver is configured via a configuration file. The configuration file defines everything related to receiving 
  from agents, as well as which rule files to load.
- 
+
 The OAP can load the configuration at bootstrap. If the new configuration is not well-formed, the OAP may fail to start up. The files
 are located at `$CLASSPATH/meter-analyzer-config`.
 
@@ -66,12 +66,16 @@ New meter-analyzer-config files is **NOT** enabled by default, you should make m
 
 Meter-analyzer-config file is written in YAML format, defined by the scheme described below. Brackets indicate that a parameter is optional.
 
-An example can be found [here](../../../../oap-server/server-starter/src/main/resources/meter-analyzer-config/spring-sleuth.yaml).
-If you're using Spring Sleuth, see [Spring Sleuth Setup](spring-sleuth-setup.md).
+All available meter analysis scripts could be found [here](../../../../oap-server/server-starter/src/main/resources/meter-analyzer-config/).
 
 | Rule Name | Description | Configuration File | Data Source |
 |-----|-----|-----|-----|
 |spring-sleuth| Metrics of Spring Sleuth Application | meter-analyzer-config/spring-sleuth.yaml | Sprign Sleuth Application --meter format--> SkyWalking OAP Server |
+|satellite| Metrics of SkyWalking Satellite self-observability(so11y)| meter-analyzer-config/satellite.yaml| SkyWalking Satellite --meter format-->SkyWalking OAP Server|
+|threadpool| Metrics of Thread Pool | meter-analyzer-config/threadpool.yaml | Thread Pool --meter format--> SkyWalking OAP Server |
+
+An example can be found [here](../../../../oap-server/server-starter/src/main/resources/meter-analyzer-config/spring-sleuth.yaml).
+If you're using Spring Sleuth, see [Spring Sleuth Setup](spring-sleuth-setup.md).
 
 ### Meters configuration
 

oap-server/server-starter/src/main/resources/application.yml

@@ -272,7 +272,7 @@ agent-analyzer:
     # Nginx and Envoy agents can't get the real remote address.
     # Exit spans with the component in the list would not generate the client-side instance relation metrics.
     noUpstreamRealAddressAgents: ${SW_NO_UPSTREAM_REAL_ADDRESS:6000,9000}
-    meterAnalyzerActiveFiles: ${SW_METER_ANALYZER_ACTIVE_FILES:} # Which files could be meter analyzed, files split by ","
+    meterAnalyzerActiveFiles: ${SW_METER_ANALYZER_ACTIVE_FILES:threadpool} # Which files could be meter analyzed, files split by ","
 
 log-analyzer:
   selector: ${SW_LOG_ANALYZER:default}

oap-server/server-starter/src/main/resources/meter-analyzer-config/threadpool.yaml

@@ -0,0 +1,20 @@
+# 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.
+
+expSuffix: instance(['service'], ['instance'], Layer.GENERAL)
+metricPrefix: meter
+metricsRules:
+  - name: thread_pool
+    exp: thread_pool.avg(['metric_type', 'pool_name', 'instance', 'service'])

oap-server/server-starter/src/main/resources/ui-initialized-templates/apm.yml

@@ -448,6 +448,17 @@ templates:
                   "queryMetricType": "readMetricsValues",
                   "chartType": "ChartArea"
                 },
+                {
+                  "width": 3,
+                  "title": "Thread Pool(Java Service)",
+                  "height": "250",
+                  "entityType": "ServiceInstance",
+                  "independentSelector": false,
+                  "metricType": "LABELED_VALUE",
+                  "metricName": "meter_thread_pool",
+                  "queryMetricType": "readLabeledMetricsValues",
+                  "chartType": "ChartLine"
+                },      
                 {
                   "width": 3,
                   "title": "CLR CPU  (.NET Service)",