Add env on grafana dashboard for all prometheus query

add_env.py

import argparse

# Create an argument parser
parser = argparse.ArgumentParser(description="Modify JSON file by adding environment variable")

# Add arguments
parser.add_argument("input_file", help="Path to the input JSON file")
parser.add_argument("output_file", help="Path to the output JSON file")

# Parse the command-line arguments
args = parser.parse_args()

# The environment variable value
env_value = "$env"

# Open the input and output files
with open(args.input_file, "r") as input_f, open(args.output_file, "w") as output_f:
    # Loop through the lines of the input file
    for line in input_f:
        if "expr" in line:
            modified_line = line.replace("{", '{env="' + env_value + '", ')
            output_f.write(modified_line)
        else:
            output_f.write(line)

print("Modified lines have been written to", args.output_file)

I think this deserve a directive in a Makefile nearby the dashboards' code.

Hey @alileza , this script is really helpful and I started to use it immediately :). I would like to propose one change to change count in replace method. Since our expressions can be multiline and can consists several queries in one expression we may need to replace multiple times. I just tested in several dashboards and it is working