LogMetrics framework for Microservices (Java)— part 1
Tags: java, spring, logmetrics, devxchange
Published: 2020-08-28 21:17:39

![Alt Text](https://dev-to-uploads.s3.amazonaws.com/i/q7b59wz94vu2oioyhxbo.png)

LogMetrics Framework provides simplified configuration to log payload and metrics data.

**Maven Repo**
` maven { url "https://dl.bintray.com/m2/release/"} `

**Dependencies**
```
compile ("io.devxchange:logmetrics:0.0.2")
Enable logmetrics — Add below property to your application.properties file
logmetrics.logging.enabled=true
logmetrics.logging.request.enabled=true
logmetrics.logging.response.enabled=true
logmetrics.logging.obfuscate.enabled=false
logmetrics.logging.obfuscate.md5.fields= #comma seperated fields
logmetrics.logging.obfuscate.sha256.fields= #comma seperated fields
logmetrics.logging.obfuscate.fields= #comma seperated fields
```
**SpringBoot Application**
```
@SpringBootApplication
@ComponentScan(basePackages = { "io.devxchange.logmetrics.demo", "io.devxchange.logmetrics" })
public class LoggingDemoApplication {

   public static void main(String[] args) {
      SpringApplication.run(LoggingDemoApplication.class, args);
   }
}
```
**Injecting the LogWriterManager & adding Interceptors**
```
@Configuration
@EnableWebMvc
public class AppConfig extends WebMvcConfigurerAdapter {

   @Autowired
   @Qualifier("manager.logwriter")
   private LogWriterManager logWriterManager;

   @Override
   public void addInterceptors(InterceptorRegistry registry) {
      registry.addInterceptor(new FrontendRestInterceptor(logWriterManager));
   }
}
```


**LogMetrics json schema**

```
{
  "$schema": "http://json-schema.org/draft-04/schema#",
  "type": "LogMetrics",
  "properties": {
    "Node": {
      "type": "string",
      "description": "Application Host IP Address"
    },
    "message_type": {
      "type": "string",
      "description": "Logmetrics message type",
      "value": "LOGMETRICS_MESSAGE"
    },
    "Duration": {
      "type": "integer",
      "description": "Response time of the API"
    },
    "Host": {
      "type": "string",
      "description": "Application Host Name"
    },
    "Fault": {
      "type": "boolean",
      "description": "API Success or Failed status "
    },
    "Method": {
      "type": "string",
      "description": "API Method name"
    },
    "ResponseBody": {
      "type": "string",
      "description": "API Response Body"
    },
    "StartDateTime": {
      "type": "string",
      "description": "API Start Time"
    },
    "EndDateTime": {
      "type": "string",
      "description": "API End time"
    },
    "HttpMethod": {
      "type": "string",
      "description": "Http Method Type"
    },
    "RequestBody": {
      "type": "string",
      "description": "API Request Body"
    }
  }
}
```
**sample logmetrics message**

```
{
  "Node": "127.0.0.1",
  "message_type": "LOGMETRICS_MESSAGE",
  "Duration": 106,
  "Host": "hostname",
  "Fault": false,
  "Method": "/user-service/api/v1/user/{id}",
  "ResponseBody": "{\"id\":1,\"name\":\"02adcec2263d2127269fcd769c33f029\",\"age\":\"35135aaa6cc23891b40cb3f378c53a17a1127210ce60e125ccf03efcfdaec458\",\"salary\":\"********\"}",
  "StartDateTime": "Tue Nov 26 23:22:54 EST 2019",
  "EndDateTime": "Tue Nov 26 23:22:54 EST 2019",
  "HttpMethod": "GET",
  "RequestBody": ""
}
```

**Demo Project**

![Alt Text](https://dev-to-uploads.s3.amazonaws.com/i/bbt10shsnyxd2ohp4ree.gif)

[LINK](https://github.com/devxchangeio-blog/logmetrics-java-demo)