feature: Add prometheus demo

demo/prometheus/prometheus-docker-compose.yaml

@@ -0,0 +1,27 @@
+#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.
+
+version: '3.3'
+services:
+  prometheus:
+    image: prom/prometheus
+    container_name: prometheus
+    restart: always
+    command:
+      - '--config.file=/etc/prometheus/prometheus.yml'
+    volumes:
+      - ./prometheus.yml:/etc/prometheus/prometheus.yml:ro
+    ports:
+      - '9090:9090'

demo/prometheus/prometheus.yml

@@ -0,0 +1,15 @@
+global:
+  scrape_interval: 15s
+  evaluation_interval: 15s
+
+scrape_configs:
+  - job_name: 'prometheus'
+    static_configs:
+      - targets:
+        - '127.0.0.1:9090'
+
+  - job_name: 'layotto'
+    scheme: http
+    static_configs:
+      - targets:
+        - 'docker.for.mac.localhost:34903'

docs/_sidebar.md

@@ -18,6 +18,8 @@
   - Flow Control on the 7th layer network
     - [Method Level Flow Control](en/start/stream_filter/flow_control.md)
   - [Observability (trace, metric)](en/start/trace/trace.md)
+    - [Prometheus metrics](en/start/trace/prometheus.md)
+    - [Skywalking trace](en/start/trace/skywalking.md)
   - [Health check and metadata query](en/start/actuator/start.md)
   - [Run business logic in Layotto using WASM](en/start/wasm/start.md)
   - [FaaS model based on WASM and Runtime](en/start/faas/start.md)

docs/en/start/trace/prometheus.md

@@ -0,0 +1,46 @@
+# Prometheus metrics 
+
+## Run prometheus
+
+window users need to change the layotto in prometheus.yml to 'docker.for.windows.localhost:34903'
+
+![](../../../img/trace/layotto.png)
+
+```shell
+cd ${project_path}/demo/prometheus
+
+docker-compose -f prometheus-docker-compose.yaml up -d
+```
+
+## Run layotto
+
+A layotto server can be started as follows.
+
+```shell
+cd ${project_path}/cmd/layotto
+go build -o layotto
+./layotto start -c ../../configs/runtime_config.json
+```
+
+## Run Demo
+
+The corresponding call-side code is in [client.go](https://github.com/mosn/layotto/blob/main/demo/flowcontrol/client.go), and running it calls layotto's SayHello interface.
+
+```shell
+ cd ${project_path}/demo/flowcontrol/
+ go build -o client
+ ./client
+```
+
+Access http://127.0.0.1:9090/graph?g0.expr=grpc_request_total
+
+![](https://gw.alipayobjects.com/mdn/rms_5891a1/afts/img/A*mEVNSZMvtvEAAAAAAAAAAAAAARQnAQ)
+
+
+## Clearance resources
+
+````shell
+cd ${project_path}/demo/prometheus
+
+docker-compose -f prometheus-docker-compose.yaml down
+````

docs/en/start/trace/skywalking.md

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+# Skywalking trace 
+
+## Configuration
+
+Example: configs/config_trace_skywalking.json
+
+````json
+{
+  "tracing": {
+    "enable": true,
+    "driver": "SkyWalking",
+    "config": {
+      "reporter": "gRPC",
+      "backend_service": "127.0.0.1:11800",
+      "service_name": "layotto"
+    }
+  }
+}
+````
+
+| Field            | Required fields | Description  |
+|------------------|-----|--------------------------|
+| reporter         | Y   | Reporting method grpc               |
+| backend_service  | Y   | skywalking oap server address |
+| service_name     | Y   | Service Name                     |
+
+## Run skywalking
+
+````shell
+cd ${project_path}/diagnostics/skywalking
+
+docker-compose -f skywalking-docker-compose.yaml up -d
+````
+
+## Run layotto
+
+````shell
+cd ${project_path}/cmd/layotto_multiple_api/
+go build -o layotto
+./layotto start -c ../../configs/config_trace_skywalking.json
+````
+
+## Run Demo
+
+````shell
+cd ${project_path}/demo/flowcontrol
+go run client.go
+````
+
+Access http://127.0.0.1:8080
+
+![](../../../img/trace/sky.png)
+
+## Clearance resources
+
+````shell
+cd ${project_path}/diagnostics/skywalking
+
+docker-compose -f skywalking-docker-compose.yaml down
+````

docs/zh/_sidebar.md

@@ -22,6 +22,7 @@
     - [健康检查、查询运行时元数据](zh/start/actuator/start.md)
     - 可观测性  
         - [Trace, Metrics](zh/start/trace/trace.md)
+        - [Metrics 接入 Prometheus](zh/start/trace/prometheus.md)
         - [Trace 接入 Skywalking](zh/start/trace/skywalking.md)
     - [将业务逻辑通过 WASM 下沉进sidecar](zh/start/wasm/start.md)
     - [基于 WASM 跟 Runtime 实现的 Faas 模型](zh/start/faas/start.md)

docs/zh/start/trace/prometheus.md

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+# Prometheus metrics 接入
+
+## 运行prometheus
+
+window用户需要将prometheus.yml中的layotto改成'docker.for.windows.localhost:34903'
+
+![](../../../img/trace/layotto.png)
+
+```shell
+cd ${project_path}/demo/prometheus
+
+docker-compose -f prometheus-docker-compose.yaml up -d
+```
+
+## 运行layotto
+
+可以按照如下方式启动一个layotto的server：
+
+```shell
+cd ${project_path}/cmd/layotto
+go build -o layotto
+./layotto start -c ../../configs/runtime_config.json
+```
+
+## 运行 Demo
+
+对应的调用端代码在[client.go](https://github.com/mosn/layotto/blob/main/demo/flowcontrol/client.go) 中，运行它会调用layotto的SayHello接口：
+
+```shell
+ cd ${project_path}/demo/flowcontrol/
+ go build -o client
+ ./client
+```
+访问 http://127.0.0.1:9090/graph?g0.expr=grpc_request_total
+
+![](https://gw.alipayobjects.com/mdn/rms_5891a1/afts/img/A*mEVNSZMvtvEAAAAAAAAAAAAAARQnAQ)
+
+
+## 清理资源
+
+````shell
+cd ${project_path}/demo/prometheus
+
+docker-compose -f prometheus-docker-compose.yaml down
+````