Pivotal Spring Boot Application for Google Cloud Platform
Google App Engine applications are easy to create, easy to maintain, and easy to scale as your traffic and data storage needs change. With App Engine, there are no servers to maintain. You simply upload your application and it's ready to go.
You can run an App Engine application in two environments, the standard environment and the flexible environment. This is an example of Java with Spring Boot in the App Engine [Flexible Environment]. The following table summarizes some of the differences between the two environments
Feature Standard environment Flexible environment
---------------------------------------------------------------------------------------------------------
Instance startup time Milliseconds Minutes
Scaling Manual, Basic, Automatic Manual, Automatic
Writing to local disk No Yes, ephemeral (disk initialized on each VM startup)
Customizable serving stack No Yes (built by customizing a Dockerfile)
First time deployment may take several minutes. This is because App Engine Flexible environment will automatically provision a Google Compute Engine virtual machine for you behind the scenes to run this application.
Steps
Note: You will need Maven and Google Cloud SDK installed
- Set the correct config for your new empty project as shown below. Sign-in to Google Cloud Platform (GCP) console and Create a new project as shown in the image below using your own name.
pasapicella@pas-macbook:~/pivotal/GCP$ gcloud projects list
PROJECT_ID NAME PROJECT_NUMBER
pas-spring-boot-on-gcp Pas Spring Boot on GCP 1043917887789
proven-impact-143410 My First Project 736758822305
pasapicella@pas-macbook:~/pivotal/GCP$ gcloud config set project pas-spring-boot-on-gcp
- Clone this project as shown below
git clone https://github.com/papicella/PivotalSpringBoot.git
- Edit the pom.xml and specify the location directory of the GCP SDK
<!-- START plugin -->
<plugin>
<groupId>com.google.appengine</groupId>
<artifactId>gcloud-maven-plugin</artifactId>
<version>2.0.9.111.v20160525</version>
<configuration>
<gcloud_directory>/Users/pasapicella/pivotal/GCP/sdk/google-cloud-sdk</gcloud_directory>
</configuration>
</plugin>
<!-- END plugin -->
- Package as shown below
$ mvn package
- Deploy as shown below
$ mvn gcloud:deploy
Sample output of deploy
[INFO] Scanning for projects...
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building PivotalSpringBoot 0.0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] >>> gcloud-maven-plugin:2.0.9.111.v20160525:deploy (default-cli) > package @ pivotalspringboot >>>
[INFO]
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ pivotalspringboot ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 1 resource
[INFO] Copying 4 resources
[INFO]
[INFO] --- maven-compiler-plugin:3.1:compile (default-compile) @ pivotalspringboot ---
[INFO] Nothing to compile - all classes are up to date
...
[INFO]
[INFO]
[INFO]
[INFO] Updating service [default]...
[INFO]
[INFO] Updating service [default]...done.
[INFO] Deployed service [default] to [https://pas-spring-boot-on-gcp.appspot.com]
[INFO]
[INFO] You can read logs from the command line by running:
[INFO] $ gcloud app logs read
[INFO]
[INFO] To view your application in the web browser run:
[INFO] $ gcloud app browse
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 09:50 min
[INFO] Finished at: 2016-09-15T22:18:21+10:00
[INFO] Final Memory: 24M/397M
[INFO] ------------------------------------------------------------------------
- View logs as follows
pasapicella@pas-macbook:~/temp$ gcloud app logs read
2016-09-15 12:17:16 default[20160915t220835] ' |____| .__|_| |_|_| |_\__, | / / / /
2016-09-15 12:17:16 default[20160915t220835] =========|_|==============|___/=/_/_/_/
2016-09-15 12:17:16 default[20160915t220835] :: Spring Boot :: (v1.4.0.RELEASE)
2016-09-15 12:17:16 default[20160915t220835]
2016-09-15 12:17:17 default[20160915t220835] 2016-09-15 12:17:17.316 INFO 1 --- [ main] p.a.p.p.s.PivotalSpringBootApplication : Starting PivotalSpringBootApplication v0.0.1-SNAPSHOT on 143e1a0ea62a with PID 1 (/app/pivotalspringboot-0.0.1-SNAPSHOT.jar started by root in /)
...
2016-09-15 12:17:33 default[20160915t220835] 2016-09-15 12:17:33.709 INFO 1 --- [ main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat started on port(s): 8080 (http)
2016-09-15 12:17:33 default[20160915t220835] 2016-09-15 12:17:33.720 INFO 1 --- [ main] p.a.p.p.s.PivotalSpringBootApplication : Started PivotalSpringBootApplication in 15.716 seconds (JVM running for 18.249)
2016-09-15 12:17:35 default[20160915t220835] 2016-09-15 12:17:35.313 INFO 1 --- [nio-8080-exec-1] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring FrameworkServlet 'dispatcherServlet'
2016-09-15 12:17:35 default[20160915t220835] 2016-09-15 12:17:35.313 INFO 1 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : FrameworkServlet 'dispatcherServlet': initialization started
2016-09-15 12:17:35 default[20160915t220835] 2016-09-15 12:17:35.351 INFO 1 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : FrameworkServlet 'dispatcherServlet': initialization completed in 38 ms
2016-09-15 12:17:35 default[20160915t220835] 2016-09-15 12:17:35.513 INFO 1 --- [nio-8080-exec-1] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring FrameworkServlet 'dispatcherServlet'
2016-09-15 12:17:35 default[20160915t220835] 2016-09-15 12:17:35.514 INFO 1 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : FrameworkServlet 'dispatcherServlet': initialization started
2016-09-15 12:17:35 default[20160915t220835] 2016-09-15 12:17:35.551 INFO 1 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : FrameworkServlet 'dispatcherServlet': initialization completed in 37 ms
2016-09-15 12:35:20 default[20160915t220835] 2016-09-15 12:35:20.796 INFO 1 --- [nio-8080-exec-8] o.h.h.i.QueryTranslatorFactoryInitiator : HHH000397: Using ASTQueryTranslatorFactory
Pas Apicella [papicella at pivotal.io] is a Senior Platform Architect at Pivotal Australia