Updating date for blog post (#17816)

2019-11-26 11:55:28 -08:00
parent 69c5c7945e
commit f9a08761ee
1 changed files with 26 additions and 27 deletions
@@ -2,31 +2,31 @@
 ---
 layout: blog
 title: "Develop a Kubernetes controller in Java"
-date: 2019-08-28
+date: 2019-11-26
 slug: Develop-A-Kubernetes-Controller-in-Java
 ---
 **Authors:** Min Kim (Ant Financial), Tony Ado (Ant Financial)
-The official [Kubernetes Java SDK](https://github.com/kubernetes-client/java) project 
+The official [Kubernetes Java SDK](https://github.com/kubernetes-client/java) project
-recently released their latest work on providing the Java Kubernetes developers 
+recently released their latest work on providing the Java Kubernetes developers
-a handy Kubernetes controller-builder SDK which is helpful for easily developing 
+a handy Kubernetes controller-builder SDK which is helpful for easily developing
 advanced workloads or systems.  
 ## Overall
 Java is no doubt one of the most popular programming languages in the world but
-it's been difficult for a period time for those non-Golang developers to build up 
+it's been difficult for a period time for those non-Golang developers to build up
 their customized controller/operator due to the lack of library resources in the 
-community. In the world of Golang, there're already some excellent controller 
+community. In the world of Golang, there're already some excellent controller
 frameworks, for example, [controller runtime](https://github.com/kubernetes-sigs/controller-runtime),
 [operator SDK](https://github.com/operator-framework/operator-sdk). These
-existing Golang frameworks are relying on the various utilities from the 
+existing Golang frameworks are relying on the various utilities from the
-[Kubernetes Golang SDK](https://github.com/kubernetes/client-go) proven to 
+[Kubernetes Golang SDK](https://github.com/kubernetes/client-go) proven to
-be stable over years. Driven by the emerging need of further integration into 
+be stable over years. Driven by the emerging need of further integration into
-the platform of Kubernetes, we not only ported many essential toolings from the Golang 
+the platform of Kubernetes, we not only ported many essential toolings from the Golang
-SDK into the kubernetes Java SDK including informers, work-queues, leader-elections, 
+SDK into the kubernetes Java SDK including informers, work-queues, leader-elections,
-etc. but also developed a controller-builder SDK which wires up everything into 
+etc. but also developed a controller-builder SDK which wires up everything into
 a runnable controller without hiccups.
@@ -34,19 +34,19 @@ a runnable controller without hiccups.
 Why use Java to implement Kubernetes tooling? You might pick Java for:
- __Integrating legacy enterprise Java systems__: Many companies have their legacy 
+- __Integrating legacy enterprise Java systems__: Many companies have their legacy
-systems or frameworks written in Java in favor of stability. We are not able to 
+systems or frameworks written in Java in favor of stability. We are not able to
 move everything to Golang easily.
- __More open-source community resources__: Java is mature and has accumulated abundant open-source 
+- __More open-source community resources__: Java is mature and has accumulated abundant open-source
-libraries over decades, even though Golang is getting more and more fancy and 
+libraries over decades, even though Golang is getting more and more fancy and
-popular for developers. Additionally, nowadays developers are able to develop 
+popular for developers. Additionally, nowadays developers are able to develop
 their aggregated-apiservers over SQL-storage and Java has way better support on SQLs.
 ## How to use?
-Take maven project as example, adding the following dependencies into your dependencies: 
+Take maven project as example, adding the following dependencies into your dependencies:
 ```xml
 <dependency>
@@ -56,8 +56,8 @@ Take maven project as example, adding the following dependencies into your depen
 </dependency>
 ```
-Then we can make use of the provided builder libraries to write your own controller. 
+Then we can make use of the provided builder libraries to write your own controller.
-For example, the following one is a simple controller prints out node information 
+For example, the following one is a simple controller prints out node information
 on watch notification, see complete example [here](https://github.com/kubernetes-client/java/blob/master/examples/src/main/java/io/kubernetes/client/examples/ControllerExample.java):
 ```java
@@ -81,14 +81,14 @@ on watch notification, see complete example [here](https://github.com/kubernetes
            .build();
 ```
-If you notice, the new Java controller framework learnt a lot from the design of 
+If you notice, the new Java controller framework learnt a lot from the design of
 [controller-runtime](https://github.com/kubernetes-sigs/controller-runtime) which
-successfully encapsulates the complex components inside controller into several 
+successfully encapsulates the complex components inside controller into several
-clean interfaces. With the help of Java Generics, we even move on a bit and simply 
+clean interfaces. With the help of Java Generics, we even move on a bit and simply
 the encapsulation in a better way.
-As for more advanced usage, we can wrap multiple controllers into a controller-manager 
+As for more advanced usage, we can wrap multiple controllers into a controller-manager
-or a leader-electing controller which helps deploying in HA setup. In a word, we can 
+or a leader-electing controller which helps deploying in HA setup. In a word, we can
 basically find most of the equivalence implementations here from Golang SDK and
 more advanced features are under active development by us.
@@ -96,7 +96,6 @@ more advanced features are under active development by us.
 The community behind the official Kubernetes Java SDK project will be focusing on
 providing more useful utilities for developers who hope to program cloud native
-Java applications to extend Kubernetes. If you are interested in more details, 
+Java applications to extend Kubernetes. If you are interested in more details,
 please look at our repo [kubernetes-client/java](https://github.com/kubernetes-client/java).
 Feel free to share also your feedback with us, through Issues or [Slack](http://kubernetes.slack.com/messages/kubernetes-client/).