Run a Node.js script for x amount of times, record each output to a file, and report the failure rate

runTimes.sh

#!/bin/bash

# Check if a number was provided as an argument
if [ $# -eq 0 ]
then
    echo "Please provide a number of times to run the script."
    exit 1
fi

# Directory where output files will be saved
output_dir="outputs"
mkdir -p "$output_dir"

# Files to store success and error counts
success_count_file="${output_dir}/success_count.txt"
error_count_file="${output_dir}/error_count.txt"

# Initialize success and error counters
success_count=0
error_count=0

start_time=$(date +%s)

# Main loop to run the Node.js script
for (( i=0; i<$1; i++ ))
do
    # Filename based on current timestamp
    timestamp=$(date +"%Y-%m-%dT%H:%M:%S%z")
    filename="${output_dir}/${timestamp}.txt"

    # Execute the Node.js script and capture its exit status
    pnpm test > "$filename"
    status=$?

    # Increment counters based on exit status
    if [ $status -eq 0 ]
    then
        ((success_count++))
        echo "Success: $filename"
    else
        ((error_count++))
        echo "Error: $filename"
    fi
done

# Calculate the duration in seconds
end_time=$(date +%s)
duration=$((end_time - start_time))

echo "Total execution time: ${duration}s"

# Save the counters to files
echo "Successes: $success_count" > "$success_count_file"
echo "Errors: $error_count" > "$error_count_file"

echo "Script execution complete."
echo "Total: $1"
echo "Successes: $success_count"
echo "Errors: $error_count"

# Calculate total operations
total_count=$((success_count + error_count))

# Calculate failing rate as a percentage
if [ "$total_count" -eq 0 ]; then
  failing_rate=0 # Avoid division by zero if total_count is 0
else
  failing_rate=$((100 * error_count / total_count))
fi

echo "Failing rate: $failing_rate%"