#!/bin/bash
# File: monitor_multiple_tenants_size.sh

OUTPUT_DIR="../node_exporter"  # Directory where the metrics file will be written
METRICS_FILE="$OUTPUT_DIR/tenants_size.prom"  # The file containing metrics

# Tenant folders and names - provide each tenant's name and the corresponding folder path
declare -A TENANTS
TENANTS=(
    ["Tenant1"]="/path/to/tenant1"
    ["Tenant2"]="/another/path/to/tenant2"
    ["Tenant3"]="/some/other/path/to/tenant3"
    # Add more tenants as needed
)

# Ensure output directory exists
mkdir -p "$OUTPUT_DIR"

# Clear the metrics file to start fresh
> "$METRICS_FILE"

# Iterate through the tenants
for tenant_name in "${!TENANTS[@]}"; do
  tenant_folder="${TENANTS[$tenant_name]}"
  if [ -d "$tenant_folder" ]; then  # Check if the folder exists
    folder_size=$(du -sb "$tenant_folder" | awk '{print $1}')  # Get the size in bytes
    # Write the metric to the metrics file
    echo "tenant_folder_size_bytes{tenant=\"$tenant_name\",folder=\"$tenant_folder\"} $folder_size" >> "$METRICS_FILE"
  else
    echo "Directory $tenant_folder for tenant $tenant_name does not exist!"
  fi
done