Handling Deployment Order

Handling Deployment Order is a tool to deploy different components (services), each of which requires on some other components.

You can add YAML or JSON file to be deploy and give back components sequence.

Package requires

To get the package, execute:

go get gopkg.in/yaml.v2

To import this package, add the following line to your code:

import "gopkg.in/yaml.v2"

For more details, see gopkg.in/yaml.v2.

How To Use

In package:

Call function YamlFileReader(path string)Components then DeployOrder(components Components)Components in main function.

var components = repository.YamlFileReader("resource/YamlFileReader_Test.yaml")
var orderComponents = service.DeployOrder(components)

Examples

Yaml file:

components:
  - component: A
    requires:
      - D
      - E
  - component: C
    requires:
      - B
  - component: D
    requires:
      - B
  - component: E
    requires:
  - component: F
    requires:
  - component: B
    requires:

Main file:

var components = repository.YamlFileReader("YamlFile.yaml")
var orderComponents = service.DeployOrder(components)
	
for index, component := range orderComponents {
	fmt.Println(index, ":", component.Name)
}

Output:

0 : B
1 : D
2 : E
3 : A
4 : C
5 : F

With HTTP request:

Web server which handles an http request via rest api.

Listen on 8081 port.

It take JSON format as format below:

{
  "components": [
    {
      "component": "A",
      "requires": [
        "D",
        "E"
      ]
    },
    {
      "component": "C",
      "requires": [
        "B"
      ]
    },
    {
      "component": "D",
      "requires": [
        "B"
      ]
    },
    {
      "component": "E",
      "requires": null
    },
    {
      "component": "F",
      "requires": null
    },
    {
      "component": "B",
      "requires": null
    }
  ]
}

Console Client which sends requests to a web server:

Choose type of read data. NOTE: Pick up with number.
1. Read from file
2. Read from console
3. Auto generated YAML files with Components

Choose 1

Give absolute path of file:
    Here you can give path.

Choose 2

Тhe program will stop to read after you are writing an END!
{
  "components": [
    {
      "component": "A",
      "requires": [
        "D",
        "E"
      ]
    },
    {
      "component": "C",
      "requires": [
        "B"
      ]
    },
    {
      "component": "D",
      "requires": [
        "B"
      ]
    },
    {
      "component": "E",
      "requires": null
    },
    {
      "component": "F",
      "requires": null
    },
    {
      "component": "B",
      "requires": null
    }
  ]
}
end

Choose 3

How many files to generated ?
 Here you should give number of generated YAML files, you want it.

Slack Message Sender

gives result of determining components

SendMessageInSlackChannel(url string, message string)