valor

Description

Valor is a tool that can be used to validate and evaluate resource.

Quick Start

1. Clone Repo

Clone this repository into the local by running the following command:

git clone github.com/gojek/optimus-extension-valor

2. Create Recipe

Copy the recipe example valor.example.yaml to valor.yaml. The resource that will be validated and evaluated from the recipe is like the following:

resources:
- name: user_account
  type: dir
  path: ./example/resource
  format: json
  framework_names:
  - user_account_evaluation
...

As stated in the recipe, the resource is available under directory ./example/resource. One example of the resource is like the following:

{
    "email": "[email protected]",
    "membership_id": 1,
    "is_active": true
}

Note that the membership_id is in numeric.

3. Prepare Valor

To execute the pipeline, one can either:

• download the latest binary from here and put it in this project directory, or
• try building it by following this guide

4. Execute Pipeline

After the preparation is done, try executing Valor from the CLI like the following:

./out/valor execute

And done. Based on the recipe, the output will be printed to the std out, or in other words in the CLI. The output should contain one of the modified input, like the following:

...
---------------------------
example/resource/valor.json
---------------------------
email: [email protected]
is_active: true
membership: premium
...

5. Explanation

What Valor does is actually stated in the recipe file valor.yaml. Behind the scene, the process is like the following:

1. read the first resource
2. execute framework pointed by field framework_names
3. in the framework, run validation based on schemas
4. if no error is found, load the required definition under definitions
5. if no error is found, execute procedures stated under procedures
6. if no error is found, write the result based on output

The explanation here is quite brief. For further explanation, try checkout the documentation here.

Documentation

The complete documentation is available like the following:

• recipe, which explains more about recipe and how to set it up for execution
• command, which explains more about the available commands to be run

Development

Community contribution is very welcome. Though, because of diverse background, one might not be able to easily understand the reasoning behind every decision or approach. So, the following is the general guideline to contribute:

1. create a dedicated branch
2. after all changes are done, create a PR
3. in that PR, please describes the issue or reasining or even approach for such changes
4. if no issue is found, merge will be done shortly

In order to follow the above steps, one might need to setup the local environment. The following is the general information to set it up.

Dependency

GO Language

The GO programming language version go1.17.1 need to be installed in the system. Go to this link and follow the instruction to install. To check GO version on the environment, run the following command:

go version

example output:

go version go1.17.1 darwin/amd64

How to Test

In this project root directory, run the following command to test:

make test

To show a more complete coverage and uncovered lines:

make coverage

You can check into coverage.html file in root project directory. This command also will open interactive coverage tool in the browser.

How to Build

To build the binary executable, in this project root directory, run the following command:

make bin

There will be a new directory named out with an executable file valor as the result of the built project.

Alternatively, distribution could also be made by running the following command:

make dist

There will be a new directory named dist with few executable files.

How to Run

In order to run this project, after building the binary executable, run the following command in this project root directory:

./out/valor