From d87149abed0aabc9b9f25165821c8759f7c94612 Mon Sep 17 00:00:00 2001
From: cchen <chenmudu@gmail.com>
Date: Fri, 12 Jul 2024 17:29:32 +0800
Subject: [PATCH] add metrics example for demo.

---
 .../docker-compose-java-demo.yaml             | 15 +++++++++++++
 otel-simple-webmvc/pom.xml                    |  1 +
 .../OtelTestSpringMvcController.java          | 22 +++++++++++++++----
 pom.xml                                       |  2 ++
 4 files changed, 36 insertions(+), 4 deletions(-)
 create mode 100644 otel-simple-webmvc/docker-compose-java-demo.yaml

diff --git a/otel-simple-webmvc/docker-compose-java-demo.yaml b/otel-simple-webmvc/docker-compose-java-demo.yaml
new file mode 100644
index 0000000..fe40cf5
--- /dev/null
+++ b/otel-simple-webmvc/docker-compose-java-demo.yaml
@@ -0,0 +1,15 @@
+version: "2.4"
+
+services:
+  otel-demo:
+    image: cchen1996/otel-simple-webmvc-demo:0.0.2
+    container_name: otel-simple-webmvc
+    environment:
+      - OTEL.RESOURCE.ATTRIBUTES=service.name=otel-simple-webmvc，service.version=0.0.2
+      - OTEL.LOGS.EXPORTER=otlp
+      - OTEL.METRICS.EXPORTER=otlp
+      - OTEL.EXPORTER.OTLP.ENDPOINT=http://192.168.117.18:4317
+    restart: on-failure
+    ports:
+      - "10001:10001"
+
diff --git a/otel-simple-webmvc/pom.xml b/otel-simple-webmvc/pom.xml
index d41025c..9e5cb77 100644
--- a/otel-simple-webmvc/pom.xml
+++ b/otel-simple-webmvc/pom.xml
@@ -34,6 +34,7 @@
             <artifactId>opentelemetry-logback-appender-1.0</artifactId>
         </dependency>
 
+
     </dependencies>
 
 </project>
\ No newline at end of file
diff --git a/otel-simple-webmvc/src/main/java/org/chenmudu/otel/webmvc/controller/OtelTestSpringMvcController.java b/otel-simple-webmvc/src/main/java/org/chenmudu/otel/webmvc/controller/OtelTestSpringMvcController.java
index e1248f7..8a0ec43 100644
--- a/otel-simple-webmvc/src/main/java/org/chenmudu/otel/webmvc/controller/OtelTestSpringMvcController.java
+++ b/otel-simple-webmvc/src/main/java/org/chenmudu/otel/webmvc/controller/OtelTestSpringMvcController.java
@@ -17,6 +17,10 @@
 package org.chenmudu.otel.webmvc.controller;
 
 import ch.qos.logback.classic.Logger;
+import io.opentelemetry.api.GlobalOpenTelemetry;
+import io.opentelemetry.api.OpenTelemetry;
+import io.opentelemetry.api.metrics.LongCounter;
+import io.opentelemetry.api.metrics.Meter;
 import io.opentelemetry.instrumentation.annotations.SpanAttribute;
 import io.opentelemetry.instrumentation.annotations.WithSpan;
 import org.slf4j.LoggerFactory;
@@ -32,11 +36,20 @@ public class OtelTestSpringMvcController {
     private volatile long counter = 0;
     private static Logger log     = (Logger) LoggerFactory
                                       .getLogger(OtelTestSpringMvcController.class);
+    private final Meter meter;
+
+    private final LongCounter longCounter;
+
+    {
+        meter = GlobalOpenTelemetry.get().getMeter(Class.class.getSimpleName());
+        longCounter = meter.counterBuilder("web_mvc_success_query_counter")
+                .setDescription("test").build();
+    }
 
     @GetMapping("/webmvc")
     public String webmvc() {
-        counter++;
-        if (counter % 2 == 0) {
+        this.counter++;
+        if (this.counter % 2 == 0) {
             try {
                 final int i = 1 / 0;
             } catch (Exception e) {
@@ -46,9 +59,10 @@ public String webmvc() {
         }
         log.info("OtelTestSpringMvcController webmvc!");
         this.calledHi();
-        if (counter > 100) {
-            counter = 0;
+        if (this.counter > 100) {
+            this.counter = 0;
         }
+        longCounter.add(1L);
         return "OtelTestSpringMvcController hello !";
     }
 
diff --git a/pom.xml b/pom.xml
index 79b5a5e..31402fe 100644
--- a/pom.xml
+++ b/pom.xml
@@ -104,6 +104,8 @@
             <artifactId>opentelemetry-logback-appender-1.0</artifactId>
         </dependency>
 
+
+
         <dependency>
             <groupId>org.apache.commons</groupId>
             <artifactId>commons-lang3</artifactId>