Introduction to Multilingual Retrieval Augmented Generation (RAG)
Spring boot 3g
1. SpringBoot
+ Groovy, Gorm, Gradle
Presented by: Vasu Srinivasan, Texas NIC Usa
For: Austin Groovy-Grails User Group (AGGUG), 2014-06-12
2. about:me
Vasu Srinivasan
Sr Tech Consultant at Texas NIC, USA
Twitter: @vasya10
Blog: http://vasya10.wordpress.com
Slides: http://www.slideshare.net/vasya10/
Videos:
Battle of Programming Languages -https://www.youtube.com/watch?v=dKftGfU0giA
Along with Eric Kelm (@asoftwareguy, asoftwareguy.com)
Current interests
Grails/Groovy, AngularJS, SharePoint, Java, MongoDB, NodeJs
3. about:Texas NIC, USA
NIC is in 29 states, specializing in e-government
scrum teams
Grails, SpringBoot, Spring, Oracle SOA, SharePoint, .Net stack
major applications
www.texas.gov
licensing applications
driver license renewals and reinstatements
concealed handgun
occupational and renewal licenses
birth and death certificates
vehicle inspections
texas department of criminal justice - Inmates App
and many many more!
our work benefits and impacts Texans directly
4.
5. why-not:spring
scalability has become a key issue for enterprise applications
stateless services provide better scalability
stand-alone monolithic servlet container and cluster management has in
some cases become a specialized job (WebSphere anyone?)
a simple http server is sufficient for many small-to-medium applications
how application is deployed, forces how to write code
conceptually this will not change, but a certain level of freedom goes a long way
in maintenance and extensibility
ramp up time to create a simple starter app is pretty high
many modern web frameworks have < 5 minutes to download the libraries and
create a simple application
6. why:spring-boot
xml as a configuration – an idea’s time has passed (long ago)
obviously verbose, bloated and error-prone
many post-Spring web frameworks use zero xml for configuration
Rails, Grails, Play, Wicket, etc.
ramp up time is a very important criteria
Play? play install run !
Or Grails? grails create-app !
opinionated frameworks are becoming fashionable, again?
Spring had to do something to compete with fast evolving frameworks such
as DropWizard, Ratpack, Sinatra, Scalatra with the concept of “micro-
services architecture” (MSA)
With its vast supporting frameworks/libraries including a solid DI
mechanism, it needed a simple way to tie them all
7. opinionated frameworks
frameworks that have
strong opinions about
themselves
framework by developers
who have strong opinions
about what goes in
8. why:boot
spring booted xml out:
so “SpringBoot”
of course, that’s the unofficial version of the story
9. about:spring-boot
container project for creating new Spring based applications
embedded servlet container: Tomcat or Jetty
starter POMs for many libraries (web, jdbc, log, data etc)
auto configurations
actuators (health, metrics, beans, shutdown, ssh, etc.)
xml, java annotated, groovy bean configurations
xml configuration not mandatory anymore
supports many dbs via spring-data
helps blend web and non-web (eg. batch) functionality
supports many views
jsp (limited), thymeleaf, and groovy template engine too! (1.1.0)
10. using:groovy
traditional Spring apps are mostly in Java, but Groovy is a
smoother, richer language
Groovy enriches Spring Boot in many ways
11. using:boot-with-groovy
Groovy in Boot How?
Using spring-cli, run Groovy
scripts
spring run app.groovy
but would anyone do this in prod? not sure.
Use groovy as the
language, instead of Java,
the language
apply plugin: ‘groovy’
compile (“org.codehaus.groovy:groovy:$groovyVersion)
Use Groovy Bean
configuration instead of xml
Boot’s GroovyBeanDefinitionReader wires the
beans
Just like Grails resources.groovy
Use Groovy Template
Engine
since Boot 1.1.0 and
Groovy 2.3.2
easy to create html via markup template.
templates in src/main/resources/templates/*.tpl
practical in cases where html is an overkill (email
templates, display history data etc.)
compile "org.codehaus.groovy:groovy-
templates:${groovyVersion}"
Using Gorm Spin-off from Grails
compile("org.grails:gorm-hibernate4-spring-
boot:1.0.0.GA")
12. using:boot-with-groovy highlights
Some immediate advantages using Groovy
Practical and time-saving annotations
@ToString, @Log, @EqualsAndHashCode
Faster Json conversions (with Groovy 2.3)
Null-safe operations
Groovy Strings
Test using Spock
Many classes can apply @CompileStatic and be as fast as
Java
14. spring-boot:demo1
Actuators
/beans
/metrics
/health
/shutdown
/trace
/dump
Auto-configures database for HSQL DB
Auto-configures a bunch of other beans
Adds a default Tomcat servlet container to run on port
8080
15. spring-boot:demo2
Star Catalog
Simple Rest Service (Get and Post)
AngularJS as client
Batch Processing
Groovy Bean Configuration
Groovy Template Engine as View layer
17. spring-boot:good
traditional Spring MVC (xml) developers will
surely see advantages in reduced / manual
configurations
rest made easy
deployment made easy
auto-configurations largely reduce initial
dependency management
java annotated configurations provide type-
safety check
well modularized, instead of a “kitchen-sink”
approach
gradle support is awesome
18. spring-boot:baffling
Multiple ways to setup properties
application.properties, application.yml
Decide on early. Go YAML.
Too many logging frameworks are
included in classpath
Strongly recommend to use logback as
standard, logback.groovy works fine
No out of the box support for profiles
Grails by default provides environment blocks in the configurations, making it
super easy to configure for different environments
In SpringBoot, some handcraft is required to create profiles (development
section in yml or application-development.properties)
Power of grailsApplication.config will be missed
19. spring-boot:baffling
Too many @configuration related annotations
@AutoConfigure, @Configuration, @EnableConfiguration,
@EnableConfigurationProperties, @ConfigurationProperties, @PropertySource,
@Value
Annotations cannot be intuitively applied, reference documentation is the main
guide
Too many annotations in general – sometimes I wonder what is my business
logic (@Bean, @PostConstruct, @ComponentScan)
once you get past the auto-configuration magic, overriding the
configurations takes a bit of discovery time
what to wire?
what properties are required?
20. spring-boot:baffling
what are my views?
jsp (anyone still using this???!)
thymeleaf (good and clean library)
groovy template engine
gsp (stand-alone spin-off from grails)
where are my views?
recommended path is src/main/resources/static
too deep in the IDE view
IDE settings can mistake static to be a java package, resulting in undesirable refactors
(rename for eg)
or use webjars for javascript jars
UI Team may like to use bower like js dependency package tools
are webjars always current?
need build customizations if using bower, sass
no out of box support (yet) or grails plugin like asset-pipeline (opportunity to develop!)
21. spring-boot:unexpected
Grails Domain objects cannot be converted to
Json directly
needs a custom mapper in between
Not all xml configuration enhancements
translate to Groovy Bean DSL
eg. <ctx:annotation-config/> works
but not <batch:/>
Broke in Spring Boot 1.1.x
Gorm @Transactional is broke – throws Proxy error
Gorm methods are not available at startup time (Bootstrap/InitializingBean)
substitute with a manual restful controller initiated call to initialize records
22. spring-boot:ide tricks (IntelliJ)
run the main application directly, not via gradle bootRun
For debugging add VM option
-javaagent:/path/springloaded-1.2.0.RELEASE.jar -noverify
then, debug the main application
sometimes port is not released (Windows)
netstat –o –a –n | findstr “8080”
stop-process $id
Associate groovy template .tpl files with “Groovy” for
auto-formatting
23. spring-boot:nice-to-have
faster creation of project templates, instead of browser
groovy configuration support (like .properties, .yaml)
richer runtime evaluations, environment block support
out of the box support for common active profiles
expose entities as Rest Entities for prototypes (like Grails
@Resource)
tooling support for Groovy Bean DSL and GTE
Well, perhaps they are already in the making … ?
grails-boot?
24. spring-boot:should we?
already a heavily invested traditional Spring shop?
desperately want to scale your apps now?
xml configurations giving you nightmares or headaches?
want a better deployment strategy?
want to hop on the micro-services wagon?
can’t wait for grails-boot?
all of the above?
any one of the above?
25. Links, References, Acknowledgements
Spring Initializr - http://start.spring.io
http://www.infoq.com/articles/microservices-intro
http://docs.spring.io/spring-boot/docs/current-
SNAPSHOT/reference/htmlsingle/
Demo Application (StarCatalog) - https://github.com/vasya10/spring-boot-
batch-sample
Testing SpringBoot with Spock -
http://fbflex.wordpress.com/2013/09/18/testing-spring-boot-applications-
with-spock/
Google Image search for cute Puss in Boots images
Disney / Dreamworks for Puss in Boots images
Images are used in good intention only to illustrate context of topic
26. Thank you!
Austin Groovy/Grails User Group
ReachForce, Austin
Texas NIC, Austin (Sponsor)
SpringBoot, Groovy, Grails, Gradle team!