BEST ORCHESTRATION OPEN SOURCE DOCKER TOOLS FOR 2018

ORCHESTRATION OPEN SOURCE DOCKER TOOLS FOR 2018

Docker is an open platform for all the developers bringing them thousands of open source project including the orchestration open source Docker tools, and the management framework with more than 85,000 Dockerized applications. Docker is even today believed to be something more than just an application platform. And the container eco system is continuing to grow so fast that with so many Docker tools being made available online, it begins to feel like a daunting task when you are just trying to understand the available options kept right in front of you.

In fact the Docker monitoring open source community offers the developers with a huge amount of tools that not just extends Dockers functionalities and can be tremendously important in case if you have just began with something. So regardless if you are a professional or a beginner through our blog post today we will here help you rounding up some of the best Docker tools that will make you get the most out of your business. Let’s have a look at them below. These tools are categorized among the following: Logging, Security, Storage/Volume Management, Networking, Service Discovery, Builds, and the last but not the least Management

CircleCI: CircleCI promises all the developers and the software teams to focus on delivering their clients and customers value rather than continuing to maintaining their CI infrastructure. The CircleCI tool also helps the developers to improve the productivity of their entire team by improving and making the CI system process quicker and much simpler. Not just this the tool also continues to integrate quickly allowing you to build and deploy immediately after a sign up. The developers here can debug manually via SSH and dynamically scale the number of containers at one shot before they actually go ahead and begin with the project.

CoreOS: Most of the Docker tools even today continue to use CoreOS, as a minimal operating system that is generally based on the Linux Kernel and is intended for running out various kind of container solutions just like Docker. The applications that run inside the Docker are allowing them to be easily moved within the cluster itself. The tool also assembles a huge variety or collection of the other open source tools that can be used with Docker serving as the foundation of the kubernetes clusters.

Sumo Logic: Sumo Logic is a cloud native and a long review tool that helps the developers in providing some of the best analysis, visualization, and alerting options. These solutions help the developers to gain some real time security and operational information, allowing them to diagnose, and troubleshoot all the problems related to the infrastructure and the other applications. The machine learning analytics would here also mean the quick discovery and future predictions of the various threats and anomalies before they actually turn out to be an issue and affecting the various end users.

Flocker: Flocker is again an open source container data volume orchestrator that allows the developers to make use of this tool in any container or in a cluster instead of being limited to just one server. Through Flocker you can go ahead and run the whole database within the Docker compartments leveraging the storage and utilising the tool in the right manner. This tool also helps the developers to utilise and move all the required information as the hosts continues to change. The tool helps to co-ordinate well with the other Docker management tools like kubernetes and Mesos. So thinking of bringing Docker into production for your business and really wish to have a better way of managing your data in an customized manner then do give flocker a try. I am sure you will not be disappointed.

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Docker Compose: Docker Compose is generally believed to be one of the most famous Docker deployment tool, and is considered to be incredible for creating, testing and arranging multi applications inside the Docker. This tool can go easily deal with the entire lifecycle of your application. And in order to have things set all you need here is the basic and the simple configuration file, and then you are all set to run the application in just one single command. Also Docker is never considered to be the best when you have the applications being scaled to different servers. With regard to the production you will here need to look out for tools that are considered to be the best for the CI environments.

Marathon: Marathon is generally believed to be a private production grade platform, a service that is being built on Apachi Mesos. This tool promises the developers to scale the various Dockerized applications, and helping them expand to more nodes when necessary in order to increase the available resource pool. The tool also continues to act as a container Docker orchestration tool in order to provide faulty recovery for all the containerized workloads. The tool with all the features involved in it automatically goes ahead and handles the hardware or the software failures ensuring that the application is always on and not off.

Convoy: This is generally believed to be a Docker volume plugin that has been created by Rancher, in order to manage various persistent container volumes. Convoy is for this known to be a Docker volume driver that helps the developers in the various processes of snapshot, backup and restoring the volumes anywhere where ever they wish to do so. Have the various Docker volumes being created using the Docker volumes on AWS that are being supported by various features and performances of the elastic book store. In fact the developers here can also go ahead and take an existing EB volume in order to generate a volume that is being attached to generate an Docker container.

Logspot: When compared to Kitematics, Logspot can turn out to be a great tool helping the developers manage all their logs generated program that has been running inside the Dockers containers. This also helps the developers to enable all the route containers app logs into a single location say for example the JSON object or a streamed end point that is made available over the HTTP. The tool is currently made available to Stdout and Stderr due to the Dockers logging API and with more number of hooks being planned within the given time, as this generally continues to increase.

Jenkins: Jenkins is a leading CI Tool that enables all the developers and the various opt teams to automate and build various test cycles for the existing applications. Jenkins to this has turned out to become a synonymous with the DevOps movement. Jenkins is a tool that really works right when it comes to the concept of thinking out of the box and delivers hundreds of plugins that are being designed to integrate various other tools across the strack. This tool also helps the developers to quickly build provisions building agents, deploying the artifacts, and then tearing down things quickly and easily.

Weave Cloud: Weave cloud is another great tool that helps the developers and the members of the software team to deploy, troubleshoot, monitor and the last but not the least secure your Dockers containers across the hosts. This platform offers its developers with each and everything that they love when it comes to weave cloud, and combining it into a flexible and a cloud native service application. This also helps in simplifying the entire process of deploying the various applications into the cloud by integrating it on regular basis on your CI system. Docker registry and container orchestrator along with all the other trouble shooting and monitoring applications in real time using weaving scope. This also integrates tool like the weave net and weave cortex in order to secure and monitor the applications respectively.

The above mentioned were some of the best tools that will help you get a clear shot when it comes to Docker. However the list for the best do not end here. These tools continue to play a different role, when it comes to the process of making applications, customizing them, and the last but not the least deploying them to the distributed clusters. We hope that the above mentioned tools will help you make your work much more proficient, quicker and less complex when compared to the others. So what other tools would you like to add to the blog post above. Have you tried any of the above mentioned Docker tools? If yes how have the above mentioned 9 major Docker tools turned out to work for you? Do Share your experiences in the comments section given below. Remember we would love to hear from you.

Norjimm is a popular Software development company India with years of experience in this field. The expertise has helped us develop several amazing apps which have helped meet the needs of different businesses with their innovative ideas. Apart from developing apps, we also provide eCommerce Portal Development and Big Data Analytics services.

HOW TO DO DATA BINDING IN PURE JAVASCRIPT?

How to do data binding in JavaScript?

How to do data binding in JavaScript?
Data binding plays an imperative role in today’s modern applications. It would be absurd if you want to write an application without it. A related to data binding is one of the most fundamental architectural patterns that have birth dozens of progeny, the Model-View-Controller (MVC) pattern.

In this article, we are going to describe how effectively you can do data binding in JavaScript?

One-way data binding

As a language, JavaScript is evolving day by day and that’s why the need for frameworks has been significantly mitigated. Data binding is not an intricated thing rather it is a very facile subject. In data binding, you have a data model on one side and on the other side, you have an interface which is often called a view. The prime idea of data binding is that you want to bind some parts of data to something on the view so that when the data changes, the view also changes automatically. This is typical for read-only data.

One-way data binding though looks simpler, it is probably the harder one to implement. This is because it requires hooking into JavaScript getters and setters for properties. JavaScript has for a long time had Object.defineProperty. This particular function allows the developers to create custom getters and setters for an object. By using this function, they can even replace them for existing properties. Take a look at the following code which uses this method to change the getter and setter for a previously defined property.

function Binding(b) {
_this = this
this.element = b.element
this.value = b.object[b.property]
this.attribute = b.attribute
this.valueGetter = function(){
return _this.value;
}
this.valueSetter = function(val){
_this.value = val
_this.element[_this.attribute] = val
}

Object.defineProperty(b.object, b.property, {
get: this.valueGetter,
set: this.valueSetter
});
b.object[b.property] = this.value;

this.element[this.attribute] = this.value

}

If you can check the code, then you must understand that the code is creating a shadow property to store the value in the Binding object and the using defineProperty to set the getter and setter for the property. Now, whenever the property is set with the equals sign (=), it will call the setter function. The function will set the property as well as the DOM element to the value.

Limited Two-way binding

In two-way data binding, changes are made on the view or model. The same basic code can be used to setup a two-way binding.

java script binding

In order to get DOM feedback, at first, the binding needs an event to listen for. You need to carefully call ‘addEventListener’. This adds an event listener to the element that was passed in. Whenever the event is called, the event handler will set the shadow copy of the object value that is data bound to the element. In two-way data binding, changes that you have made to the model will also update the DOM element.

function Binding(b) {
_this = this
this.element = b.element
this.value = b.object[b.property]
this.attribute = b.attribute
this.valueGetter = function(){
return _this.value;
}
this.valueSetter = function(val){
_this.value = val
_this.element[_this.attribute] = val
}

if(b.event){
this.element.addEventListener(b.event, function(event){
_this.value = _this.element[_this.attribute]
})
}

Object.defineProperty(b.object, b.property, {
get: this.valueGetter,
set: this.valueSetter
});
b.object[b.property] = this.value;

this.element[this.attribute] = this.value
}

Though this code is useful, still it is limited because it only allows mostly a single one-way or two-way data binding for the element and property.

Better two-way data binding or data

This is a better and advanced approach two-way data binding which allows a property to be bound to one or more elements. This means that the data binding can update multiple elements on the DOM when the value is changed either when a DOM event is fired or the model changes.

Now, the addBinding function will allow new elements to be added to the binding with events. These are added to to the elementBindings array. The setter function now iterates over the elementBindings array and updates the property whenever a new value is set. You can even use it for one-way data bindings by simply omitting the event parameter when calling addBinding.

function Binding(b) {
_this = this
this.elementBindings = []
this.value = b.object[b.property]
this.valueGetter = function(){
return _this.value;
}
this.valueSetter = function(val){
_this.value = val
for (var i = 0; i < _this.elementBindings.length; i++) {
var binding=_this.elementBindings[i]
binding.element[binding.attribute] = val
}
}
this.addBinding = function(element, attribute, event){
var binding = {
element: element,
attribute: attribute
}
if (event){
element.addEventListener(event, function(event){
_this.valueSetter(element[attribute]);
})
binding.event = event
}
this.elementBindings.push(binding)
element[attribute] = _this.value
return _this
}

Object.defineProperty(b.object, b.property, {
get: this.valueGetter,
set: this.valueSetter
});

b.object[b.property] = this.value;
}

JavaScript data binding without a framework

You really don’t need a framework or fancy cutting-edge JavaScript features to do two-way data binding. This can be done via Observer pattern, but a complete implementation of that is a little chunky. So, if native getters/setters are out, the only mechanism that you have are accessors, Check the below code.

var n = 5;
function getN() { return n; }
function setN(newN) { n = newN; }

console.log(getN()); // 5
setN(10);
console.log(getN()); // 10
If you find this code boring, then you can rearrange it to a single function.
var _n = 5;
function n(n) {
if (arguments.length) _n = n;
return _n;
}
console.log(n()); // 5
n(10);
console.log(n()); // 10
Now, you want to notify stuff when the value changes, then your code should be like this
var _n = 5, _nListeners = [];
function n(n) {
if (arguments.length && n !== _n) {
_n = n;
_nListeners.forEach(function(listener) { listener(n); });
}
return _n;
}
n.subscribe = function(listener) { _nListeners.push(listener); }

console.log(n()); // 5
n.subscribe(function(newN) { console.log(newN); });
n(10); // logs 10
n(10); // no output, value didn’t change.
This could be a daunting job if you need to do it in a large volume, now, modify it to a neat little generator function.
function observable(value) {
var listeners = [];

function notify(newValue) {
listeners.forEach(function(listener){ listener(newValue); });
}
function accessor(newValue) {
if (arguments.length && newValue !== value) {
value = newValue;
notify(newValue);
}
return value;
}
accessor.subscribe = function(listener) { listeners.push(listener); };

return accessor;
}
var n = observable(5);
n.subscribe(function(newN) { console.log(newN); });
n(10); // logs 10

Now, by using observable(), you can have as many little pre-packaged observable values as you want.
The next, you need to combine them. Your code should be like this,
var a = observable(3), b = observable(2);

var c = observable(a() + b());

a.subscribe(function(){ c(a() + b()); });
b.subscribe(function(){ c(a() + b()); });

console.log(c()); // 5
a(10);
console.log(c()); // 12
b(7);
console.log(c()); // 17
There are a lot of repetition, you can fix it by puling out the functions.
var a = observable(3), b = observable(2);

function calculation() { return a() + b(); }

var c = observable(calculation());

function listener() { c(calculation()); }
a.subscribe(listener);
b.subscribe(listener);

Now, you need a way to calculate the value of the observable, and need to know the observables that participate in that calculation. You will call this variation on an observable a computed value:

function computed(calculation, dependencies) {
// start with the initial value
var value = observable(calculation());

// register a listener for each dependency, that updates the value
function listener() { value(calculation()); }
dependencies.forEach(function(dependency) {
dependency.subscribe(listener);
});

// now, wrap the value so that users of computed() can’t manually update the value
function getter() { return value(); }
getter.subscribe = value.subscribe;

return getter;
}
Data binding
Now, you need to keep focus on Data binding. Let’s discuss it with examples. Let’s continue with the adding example, but now let’s represent it with text boxes:

+

=

Now, you need to add observable into the boxes which is a very daunting task.
var aText = document.getElementById(‘a-text’);
aText.value = a();
a.subscribe(function(_a){ aText.value = _a; });

var bText = document.getElementById(‘b-text’);
bText.value = b();
b.subscribe(function(_b){ bText.value = _b; });

var cText = document.getElementById(‘c-text’);
cText.value = c();
c.subscribe(function(_c){ cText.value = _c; });
Again, there is some repetition, so you need to clean it up.
function bindValue(input, observable) {
input.value = observable();
observable.subscribe(function(){ input.value = observable(); });
}

bindValue(aText, a);
bindValue(bText, b);
bindValue(cText, c);

Now, you need to update the values when the text boxes change. That’s pretty easy too, actually. All you need to do is listen to events on the input, and update the observable accordingly.

function bindValue(input, observable) {
input.value = observable();
observable.subscribe(function(){ input.value = observable(); });

input.addEventListener(‘input’, function() {
observable(input.value);
});
}
Now, whenever the textbox value changes, you will update the observable, and when the observable changes, you update the textbox. But this will actually only in theory. You need to make a slight adjustment to our bindValue. Let’s do a little sniffing to figure out what you want to do.
function bindValue(input, observable) {
var initial = observable();
input.value = initial;
observable.subscribe(function(){ input.value = observable(); });

var converter = function(v) { return v; };
if (typeof initial == ‘number’) {
converter = function(n){ return isNaN(n = parseFloat(n)) ? 0 : n; };
}

input.addEventListener(‘input’, function() {
observable(converter(input.value));
});
}

Now, if the initial value of the observable is a number, you try to interpret further values of the input as a number as well.
In this way, you will be able to implement a proof-of-concept two-way data-binding example using only vanilla JavaScript which is compatible for all the devices.

Hope, now you have an adequate knowledge of data binding and how to do data binding in JavaScript.