Helm Parametrize Script

This script is designed to parametrize Helm chart values by reading configuration and secrets files from a specified directory. It encodes the content of these files if necessary and outputs them in a key-value format, suitable for use with Helm charts.

Prerequisites

• Bash environment
• Perl installed (for inline editing of strings)

Usage

The script expects two primary arguments: an environment identifier and a configuration file path.

./helm_parametrize.sh [environment] -f [config_path]

Arguments

• [environment]: Environment identifier (e.g., "dev", "prod").
• -f [config_path]: Path to the configuration files. This is a required argument.

Example

./helm_parametrize.sh dev -f /path/to/config

Description

Here's a detailed breakdown of the script:

1. Error Handling and Usage Message:

   • Exits immediately if any command has a non-zero status.
   • Prints a usage message and exits when invalid arguments are input or help is requested.

2. Parsing Arguments:

   • Parses command-line options, ensuring the environment identifier and configuration file path are provided.

3. Validating Inputs:

   • Checks if the environment identifier and configuration path are given and valid.

4. Processing Files:

   • Processes files within the given directory, differentiating between configurations and secrets.
   • Encodes secret files in base64. Replaces newlines with \n in config files.
   • Outputs each file's content in the format type.key=content.

5. Executing for Configs and Secrets:

   • Iterates over two types: "configs" and "secrets", processing files accordingly.