io.github.crabzilla:crabzilla-kotlin-example1-service

Yet another Event Sourcing experiment

License	MIT License
Categories	Kotlin Languages
GroupId	io.github.crabzilla
ArtifactId	crabzilla-kotlin-example1-service
Last Version	0.0.5
Release Date	Aug 21, 2017
Type	jar
Description	Yet another Event Sourcing experiment

Download crabzilla-kotlin-example1-service

Filename	Size
crabzilla-kotlin-example1-service-0.0.5.pom
crabzilla-kotlin-example1-service-0.0.5.jar	33 KB
crabzilla-kotlin-example1-service-0.0.5-sources.jar	7 KB
crabzilla-kotlin-example1-service-0.0.5-javadoc.jar	23 KB

How to add to project

Apache Maven

<!-- https://jarcasting.com/artifacts/io.github.crabzilla/crabzilla-kotlin-example1-service/ -->
<dependency>
    <groupId>io.github.crabzilla</groupId>
    <artifactId>crabzilla-kotlin-example1-service</artifactId>
    <version>0.0.5</version>
</dependency>

Gradle Groovy

// https://jarcasting.com/artifacts/io.github.crabzilla/crabzilla-kotlin-example1-service/
implementation 'io.github.crabzilla:crabzilla-kotlin-example1-service:0.0.5'

Gradle Kotlin

// https://jarcasting.com/artifacts/io.github.crabzilla/crabzilla-kotlin-example1-service/
implementation ("io.github.crabzilla:crabzilla-kotlin-example1-service:0.0.5")

Apache Buildr

'io.github.crabzilla:crabzilla-kotlin-example1-service:jar:0.0.5'

Apache Ivy

<dependency org="io.github.crabzilla" name="crabzilla-kotlin-example1-service" rev="0.0.5">
  <artifact name="crabzilla-kotlin-example1-service" type="jar" />
</dependency>

Groovy Grape

@Grapes(
@Grab(group='io.github.crabzilla', module='crabzilla-kotlin-example1-service', version='0.0.5')
)

Scala SBT

libraryDependencies += "io.github.crabzilla" % "crabzilla-kotlin-example1-service" % "0.0.5"

Leiningen

[io.github.crabzilla/crabzilla-kotlin-example1-service "0.0.5"]

Dependencies

compile (18)

Group / Artifact	Type	Version
io.github.crabzilla : crabzilla-kotlin-example1-database	jar	0.0.5
io.github.crabzilla : crabzilla-vertx	jar	0.0.5
org.jetbrains.kotlin : kotlin-stdlib	jar	1.1.4
org.jetbrains.kotlin : kotlin-reflect	jar	1.1.4
com.fasterxml.jackson.module : jackson-module-kotlin	jar	2.9.0.pr4
io.github.microutils : kotlin-logging	jar	1.4.6
org.jdbi : jdbi3-kotlin	jar	3.0.0-beta2
org.jdbi : jdbi3-kotlin-sqlobject	jar	3.0.0-beta2
org.slf4j : slf4j-simple	jar	1.7.8
com.typesafe : config	jar	1.3.1
com.google.inject : guice	jar	4.1.0
com.google.inject.extensions : guice-multibindings	jar	4.1.0
com.fasterxml.jackson.module : jackson-module-parameter-names	jar	2.9.0.pr4
com.fasterxml.jackson.datatype : jackson-datatype-jdk8	jar	2.9.0.pr4
com.fasterxml.jackson.core : jackson-annotations	jar	2.9.0.pr4
com.fasterxml.jackson.datatype : jackson-datatype-jsr310	jar	2.9.0.pr4
javax.inject : javax.inject	jar	1
org.slf4j : slf4j-api	jar	1.7.8

provided (1)

Group / Artifact	Type	Version
org.projectlombok : lombok	jar	1.16.18

test (5)

Group / Artifact	Type	Version
io.vertx : vertx-unit	jar	3.5.0.Beta1
org.junit.vintage : junit-vintage-engine	jar	4.12.0-RC2
org.junit.jupiter : junit-jupiter-api	jar	5.0.0-RC2
org.mockito : mockito-core	jar	2.7.4
org.assertj : assertj-core	jar	3.5.0

Project Modules

There are no modules declared in this project.

crabzilla

Goal for version 1.0.0

To help writing CQRS and Event Sourcing applications with Vert.x

Status

It's still in very early development stage. Do not use release 0.0.5, master branch is very different from that.

Example

• Accounts Example

Building

Requirements

• Java 8
• Maven (tested with 3.5.0+)
• Docker compose (tested with 1.18.0)
• Kotlin plugin for your IDE

Steps

1. Clone it:

git clone https://github.com/crabzilla/crabzilla
cd crabzilla

2. Start docker-compose running a Postgres database (port 5432 will be used):

docker-compose up

3. Open another terminal and build it, running both unit and integration tests:

mvn clean install -DskipTests=false

Random notes

1. Crabzilla tries to provide a chassis for wiring and running your domain by using plain verticles.
2. If your command handling functions are pure, all side effects will occurs within:
   • core.UnitOfWorkJournal: to save the events to a database using optimistic concurrency control
   • pgc.PgcUnitOfWorkProjector: to project events to a read model using a PostgreSql database using vertx-pg-client
   • jooq.JooqUowProjector: to project events to a read model using vertx-jooq-classic-reactive
3. So far events from all entities are written as an UnitOfWork in Json format into a single partitioned append only table.

Versions

Version
0.0.5 Aug 21, 2017