How to automate database migration?
How to version control your database? Database migration using Flyway.
Code
Step-by-Step guide
Add dependnacy in pom.xml
<dependency>
<groupId>org.apache.camel</groupId>
<artifactId>camel-openapi-java</artifactId>
<version>3.14.0</version> <!-- Same as Camel Core -->
</dependency>Java
@Component
public class RestDsl extends RouteBuilder {
@Override
public void configure() throws Exception {
restConfiguration()
.component("servlet")
.bindingMode(RestBindingMode.json)
.dataFormatProperty("prettyPrint", "true")
.apiContextPath("/api-doc")
.apiProperty("api.title", "Saggu.UK Camel Rest APIs")
.apiProperty("api.version", "1.0")
.apiContextListing(true)
;
rest()
.consumes("application/json").produces("application/json")
.get("/weather/{city}")
.responseMessage("200", "On good request")
.responseMessage("404", "For invalid city name")
.description("Get weather data for a given city")
.param()
.name("city").type(path).description("The name of the city e.g. London").dataType("string")
.endParam()
.outType(WeatherDto.class).to("direct:get-weather-data")
}
}What is Apache Camel Processor and how to use it? The Processor interface is used to implement consumers of message exchanges or to implement a Message Translator, and other use-cases.
Code
If you like to know more about Enterprise Integration Patterns and Apache Camel then see this video:
Testcontainers is a Java library that supports JUnit tests, providing lightweight, throwaway instances of common databases, Selenium web browsers, or anything else that can run in a Docker container.
Code
Apache Camel JMS Component
The Camel JMS component allows messages to be sent to (or consumed from) a JMS Queue or Topic. It uses Spring’s JMS support for declarative transactions, including Spring’s JmsTemplate for sending and a MessageListenerContainer for consuming.
Workshop
- Add Dependency
- Download and Install ActiveMQ
- Read and write Messages
Source Code
The Content Based Router from the EIP patterns allows you to route messages to the correct destination based on the contents of the message exchanges.
Code Available At
In this session you’ll discover how flexible, deep, and comprehensive Camel’s error handling is to deal with most situations.
We’ll cover all the error handlers Camel provides out of the box, and when they’re best used, so you can pick the ones suited to your applications.
