Profiles

Managing Application with Profiles

• For example, you want to set different log level in Development and Production Environments.

Log Level Spring Framework	Description
trace	more detailed information about the flow of the system
debug	Information about the flow of the system
info	events occurring at the run time
warning	warning for the errors caused due to the usage of deprecated APIs.
error	runtime errors
off	turn off the log

• For example, you have 2 environments, dev and prod. Then, you can create 2 (two) properties. application-dev.properties and application-prod.properties

application-dev.properties

logging.level.org.springframework=info

nestapp-service.url=http://localhost:8081

application-prod.properties

server.port=8085 // custom port
logging.level.org.springframework=info

application.properties

server.port=8081 // custom port
spring.profiles.active=dev // or prod or other environments

package com.alibaihaqi.springboot.springapp;

import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.stereotype.Component;

@ConfigurationProperties(prefix = "nestapp-service")
@Component
public class NestAppConfiguration {
    private String url;


    public String getUrl() {
        return url;
    }

    public void setUrl(String url) {
        this.url = url;
    }
}

package com.alibaihaqi.springboot.springapp;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

//nestapp-service.url=
@RestController
public class NestAppConfigurationController {

    @Autowired
    private NestAppConfiguration configuration;

    /**
     * @return: NestAppConfiguration -> { url: string }
     */
    @GetMapping("/nestapp-configuration") // Path Implementation
    public NestAppConfiguration nestappcConfigurationResponse() {
        return configuration;
    }
}

Maven Build (on IntelliJ IDEA CE)

You can try to execute the Maven Build with these following steps:

• Open the Run/Debug Configurations, and click + button
• Select the Maven option
• You'll see the display something like this

• Add clean install to the command line section make sure the build runs
  • clean: attempts to clean the files and directories generated by Maven during its build
  • install: compile, test, and package the Java project and copy .jar file into your local Maven repository
• You need to select the maven build runner to trigger the build (not the previous one)
• After finished, you can see the jar SNAPSHOT will be generated and moved into your local repository

• You can start your built .jar file by going to the directory first
• Then, run the command java -jar <jar_name_to_run>.jar

Actuator

To help you monitor your application in Production, you can use Spring Boot Actuator, by add the dependency through your pom.xml file

<dependencies>
	<dependency>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-web</artifactId>
	</dependency>

    <dependency>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-actuator</artifactId>
	</dependency>
</dependencies>

• For example, after you rebuild the package, run the application, and open the path http://localhost:8080/actuator, you might see the response like this:

{
	"_links": {
		"self": {
			"href": "http://localhost:8080/actuator",
			"templated": false
		},
		"health-path": {
			"href": "http://localhost:8080/actuator/health/{*path}",
			"templated": true
		},
		"health": {
			"href": "http://localhost:8080/actuator/health",
			"templated": false
		}
	}
}

• You can use the /actuator/health path as your health check, you might get response like this:

{
    "status": "UP"
}

• You can enable another features from actuator package by activating it through application.properties

application-dev.properties

management.endpoints.web.exposure.include=*

application-prod.properties

management.endpoints.web.exposure.include=health,metrics // specific property might be great to minimize load

• You might see additional properties and link

Response

{
	"_links": {
		"self": {
			"href": "http://localhost:8080/actuator",
			"templated": false
		},
		"beans": {
			"href": "http://localhost:8080/actuator/beans",
			"templated": false
		},
		"caches-cache": {
			"href": "http://localhost:8080/actuator/caches/{cache}",
			"templated": true
		},
		"caches": {
			"href": "http://localhost:8080/actuator/caches",
			"templated": false
		},
		"health": {
			"href": "http://localhost:8080/actuator/health",
			"templated": false
		},
		"health-path": {
			"href": "http://localhost:8080/actuator/health/{*path}",
			"templated": true
		},
		"info": {
			"href": "http://localhost:8080/actuator/info",
			"templated": false
		},
		"conditions": {
			"href": "http://localhost:8080/actuator/conditions",
			"templated": false
		},
		"configprops": {
			"href": "http://localhost:8080/actuator/configprops",
			"templated": false
		},
		"configprops-prefix": {
			"href": "http://localhost:8080/actuator/configprops/{prefix}",
			"templated": true
		},
		"env": {
			"href": "http://localhost:8080/actuator/env",
			"templated": false
		},
		"env-toMatch": {
			"href": "http://localhost:8080/actuator/env/{toMatch}",
			"templated": true
		},
		"loggers": {
			"href": "http://localhost:8080/actuator/loggers",
			"templated": false
		},
		"loggers-name": {
			"href": "http://localhost:8080/actuator/loggers/{name}",
			"templated": true
		},
		"heapdump": {
			"href": "http://localhost:8080/actuator/heapdump",
			"templated": false
		},
		"threaddump": {
			"href": "http://localhost:8080/actuator/threaddump",
			"templated": false
		},
		"metrics-requiredMetricName": {
			"href": "http://localhost:8080/actuator/metrics/{requiredMetricName}",
			"templated": true
		},
		"metrics": {
			"href": "http://localhost:8080/actuator/metrics",
			"templated": false
		},
		"scheduledtasks": {
			"href": "http://localhost:8080/actuator/scheduledtasks",
			"templated": false
		},
		"mappings": {
			"href": "http://localhost:8080/actuator/mappings",
			"templated": false
		}
	}
}