rajadilipkolli / poc

My POC's against various concepts

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• 🔭 I’m currently working on Java, Spring Boot, Spring Cloud
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poc's Issues

Add validation while creating customer

Unable to access H2 console when spring security is enabled

Explore spring HATEOAS

Refer : https://spring.io/projects/spring-hateoas#overview

Fix travis build failure

Attempt to use maven wrapper in travis and it is failing https://travis-ci.org/rajadilipkolli/POC/builds/259852725

add Spring Security

Use csrf().disable() if we need authentication for spring rest else we will get 403 error, if we are using web then this is not necessary

Add jacoco plugin to pom.xml

This enables running test coverage by default when running codecov

Find How to release version in github

Check spring boot architecture

https://101.jqassistant.org/getting-started-spring-boot-maven/readme.html

add restdocs for spring-boot-rest-poc module

Reference :

https://blog.mimacom.com/api-documentation-with-spring-rest-docs/

Describe How To Setup a Project Using Lombok Jar

Refer :: https://projectlombok.org/setup/eclipse

Add Travis build to the project

add Travis build so that we can test everything in cloud

Use pooled-lo for sequence generation

Use pooled-lo-optimizer

Enable security for rest end points

Create Hybrid JOOQ-Hibernate sample

spring-projects/spring-boot#7107

Encrypt plaintext passwords

using http://www.baeldung.com/spring-boot-jasypt we can encrypt.

publish soap end points using Apache CXF and spring boot-ws.

Add Notes as well.

We can also enable logging feature using @feature annotation (@LoggingFeature).

Read junit-platform value from spring-boot dependencies

https://github.com/rajadilipkolli/POC/blob/master/poc-parent/pom.xml#L57

add compatible findbugs-maven-plugin

The current version(3.0.5) is not compatible with java8 +, hence removing it. Will add once there is a compatible version.

Create .gitignore at parent level

Duplicating gitIgnore at module level is not correct process instead declare at global level

Unable to create datasourceproxy after upgrading to 2.0.0.M3

After upgrading to 2.0.0.M3 creation of datasource proxy is failed with below exception

java.lang.ClassCastException: org.springframework.boot.context.event.ApplicationFailedEvent cannot be cast to org.springframework.boot.web.context.WebServerInitializedEvent
	at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:159) [spring-context-5.0.0.RC3.jar:5.0.0.RC3]
	at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:139) [spring-context-5.0.0.RC3.jar:5.0.0.RC3]
	at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:127) [spring-context-5.0.0.RC3.jar:5.0.0.RC3]
	at org.springframework.boot.context.event.EventPublishingRunListener.finished(EventPublishingRunListener.java:114) [spring-boot-2.0.0.M3.jar:2.0.0.M3]
	at org.springframework.boot.SpringApplicationRunListeners.callFinishedListener(SpringApplicationRunListeners.java:79) [spring-boot-2.0.0.M3.jar:2.0.0.M3]
	at org.springframework.boot.SpringApplicationRunListeners.finished(SpringApplicationRunListeners.java:72) [spring-boot-2.0.0.M3.jar:2.0.0.M3]
	at org.springframework.boot.SpringApplication.handleRunFailure(SpringApplication.java:803) [spring-boot-2.0.0.M3.jar:2.0.0.M3]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:338) [spring-boot-2.0.0.M3.jar:2.0.0.M3]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1245) [spring-boot-2.0.0.M3.jar:2.0.0.M3]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1233) [spring-boot-2.0.0.M3.jar:2.0.0.M3]
	at com.poc.restfulpoc.RestFulPOCApplication.main(RestFulPOCApplication.java:15) [classes/:na]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_101]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_101]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_101]
	at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_101]
	at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49) [spring-boot-devtools-2.0.0.M3.jar:2.0.0.M3]

2017-08-03 23:06:19.449  INFO 43512 --- [  restartedMain] utoConfigurationReportLoggingInitializer : 

Error starting ApplicationContext. To display the auto-configuration report re-run your application with 'debug' enabled.
2017-08-03 23:06:19.458 ERROR 43512 --- [  restartedMain] o.s.boot.SpringApplication               : Application startup failed

org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'org.springframework.boot.autoconfigure.jdbc.DataSourceJmxConfiguration$Hikari': Unsatisfied dependency expressed through constructor parameter 0; nested exception is org.springframework.beans.factory.BeanNotOfRequiredTypeException: Bean named 'dataSource' is expected to be of type 'com.zaxxer.hikari.HikariDataSource' but was actually of type 'net.ttddyy.dsproxy.support.ProxyDataSource'
	at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:726) ~[spring-beans-5.0.0.RC3.jar:5.0.0.RC3]
	at org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:191) ~[spring-beans-5.0.0.RC3.jar:5.0.0.RC3]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:1281) ~[spring-beans-5.0.0.RC3.jar:5.0.0.RC3]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1137) ~[spring-beans-5.0.0.RC3.jar:5.0.0.RC3]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:543) ~[spring-beans-5.0.0.RC3.jar:5.0.0.RC3]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:499) ~[spring-beans-5.0.0.RC3.jar:5.0.0.RC3]
	at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:312) ~[spring-beans-5.0.0.RC3.jar:5.0.0.RC3]
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.0.0.RC3.jar:5.0.0.RC3]
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:310) ~[spring-beans-5.0.0.RC3.jar:5.0.0.RC3]
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:200) ~[spring-beans-5.0.0.RC3.jar:5.0.0.RC3]
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:755) ~[spring-beans-5.0.0.RC3.jar:5.0.0.RC3]
	at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:868) ~[spring-context-5.0.0.RC3.jar:5.0.0.RC3]
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:549) ~[spring-context-5.0.0.RC3.jar:5.0.0.RC3]
	at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:122) ~[spring-boot-2.0.0.M3.jar:2.0.0.M3]
	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:750) [spring-boot-2.0.0.M3.jar:2.0.0.M3]
	at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:386) [spring-boot-2.0.0.M3.jar:2.0.0.M3]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:327) [spring-boot-2.0.0.M3.jar:2.0.0.M3]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1245) [spring-boot-2.0.0.M3.jar:2.0.0.M3]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1233) [spring-boot-2.0.0.M3.jar:2.0.0.M3]
	at com.poc.restfulpoc.RestFulPOCApplication.main(RestFulPOCApplication.java:15) [classes/:na]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_101]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_101]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_101]
	at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_101]
	at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49) [spring-boot-devtools-2.0.0.M3.jar:2.0.0.M3]
Caused by: org.springframework.beans.factory.BeanNotOfRequiredTypeException: Bean named 'dataSource' is expected to be of type 'com.zaxxer.hikari.HikariDataSource' but was actually of type 'net.ttddyy.dsproxy.support.ProxyDataSource'
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.checkBeanNotOfRequiredType(DefaultListableBeanFactory.java:1503) ~[spring-beans-5.0.0.RC3.jar:5.0.0.RC3]
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoMatchingBeanFound(DefaultListableBeanFactory.java:1482) ~[spring-beans-5.0.0.RC3.jar:5.0.0.RC3]
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1097) ~[spring-beans-5.0.0.RC3.jar:5.0.0.RC3]
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1058) ~[spring-beans-5.0.0.RC3.jar:5.0.0.RC3]
	at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:812) ~[spring-beans-5.0.0.RC3.jar:5.0.0.RC3]
	at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:718) ~[spring-beans-5.0.0.RC3.jar:5.0.0.RC3]
	... 24 common frames omitted

Migrate to JUNIT5 Completely

Currently below are the issues when attempting to migrate to JUNIT5

1. There is no alternative to @rule -> Currently disabled to pass tests
2. Tests are not running with maven-surefire-plugin that comes with spring-boot2 -> downgraded to 2.19.1 version to make it work

Notes: To make JunitTest pass added junit-migration-support module to mongoredis integration code, junit-platform-launcher module dependency is used to launch JUNIT5 in IDE or Maven or gradle

Check spring boot best practices

https://www.e4developer.com/2018/08/06/spring-boot-best-practices/

Infinispan Cache Solution

add inmemory infinispan cache solution to rest api

Change licensed to MIT license

Convert Date to LocalDateTime

Use below code to serialize and deserialize. jsr310 module will handle the code

@JsonSerialize(using = ToStringSerializer.class)
@JsonDeserialize(using = LocalDateTimeDeserializer.class)
private LocalDateTime dateOfBirth;

download source files of jars used in project

add maven source plugin so that all source files of jars are downloaded and easier for debugging

Upgrade maven wrapper to Maven 3.5.3

Implement all Hibernate Mappings (one-to-one, one-to-many, many-to-many)

Include both Bi-Directional and Uni-Directional

• For @OnetoOne associations, you should always share the Primary Key with the parent table, and you should avoid the bidirectional association if you don’t plan to use bytecode enhancement.

• Bidirectional mapping will lead to infinite loops in JSON so that should be handled

Add Validation and custom messages for validation

produce XML responses apart from JSON response

Adding below dependency solves generating the response in XML format. This is for demonstration only

<dependency>
    <groupId>com.fasterxml.jackson.dataformat</groupId>
    <artifactId>jackson-dataformat-xml</artifactId>
    <version>2.4.6</version>
</dependency>

Organize code as per recommendation

https://docs.spring.io/spring-boot/docs/current/reference/htmlsingle/#using-boot-locating-the-main-class

Refactor according to the instructions provided

Create Web application using MongoDB and spring security, bootstrap

https://www.djamware.com/post/5b2f000880aca77b083240b2/spring-boot-security-and-data-mongodb-authentication-example

Convert to modules

https://medium.com/criciumadev/its-time-migrating-to-java-11-5eb3868354f9?platform=hootsuite

Enable JDBC Batching

In current setup when running the application each statement is executed as single sql call. Take advantage of JDBC batching to reduce number of sql calls to server.

Add Check style by default

Adding Checkstyle with IDE helps to fix issue on the fly and for better coding standard to follow

Implement CAFFEINE Cache Solution

https://github.com/ben-manes/caffeine/wiki

Explore Liquibase

sample

• http://www.baeldung.com/liquibase-refactor-schema-of-java-app
• http://www.liquibase.org/

Enable Liquibase with r2db module

Sort Maven declaration

See https://github.com/Ekryd/sortpom

Explore query dsl

Disable spring.jpa.open-in-view

enabling spring.jpa.open-in-view is anti-pattern so avoid it

Below properties should be removed

• spring.jpa.hibernate.properties.enable_lazy_load_no_trans: true
• spring.jackson.serialization.fail-on-empty-beans: false

Add readme markdown at module level

adding readme markdown for each module level helps to integrate in parent pom

explore datasource-proxy-spring-boot-starter

https://github.com/gavlyukovskiy/spring-boot-data-source-decorator

Remove unnecessary properties from jdbc logging

Revisit application.properties

Convert one module to use BDD Mokito

https://thepracticaldeveloper.com/2018/05/10/write-bdd-unit-tests-with-bddmockito-and-assertj/

Explore JMH

https://github.com/openjdk/jmh

Fix Order of Tests in JUnit

Fix the order of JUnit test cases so that we can reduce dependency and improve the time taken to execute.

https://www.baeldung.com/junit-5-test-order

Create WebFlux programming model of type Functional with Java 8 lambda style

With Spring WebFlux Functional, we use {HandlerFunctions, RouterFunctions} to develop.

HandlerFunctions will handle incoming HTTP requests through ServerRequest, and return a Mono

RouterFunction handle all incoming requests. It takes a ServerRequest and returns a Mono. If a request matches a particular route, a handler function is returned; otherwise, it returns an empty Mono.

Use properties for compiling instead of specifying version in plugin

Add Sonar Cloud

http://www.sonarlint.org/eclipse/index.html for reference

remove cobertura-maven-plugin and use jacoco