import java.util.HashMap;

import java.util.Map;

public class EnvValidator {

/**

* Wraps environment variable access to handle potential errors during hypothesis validation.

* @param envVars A map containing environment variables.

* @param requiredVars A map containing required environment variables.

* @return A map containing the validated environment variables. Returns null if critical errors occur.

*/

public static Map<String, String> validateEnvVars(Map<String, String> envVars, Map<String, String> requiredVars) {

Map<String, String> validatedVars = new HashMap<>();

// Validate required environment variables

for (Map.Entry<String, String> entry : requiredVars.entrySet()) {

String varName = entry.getKey();

String varValue = envVars.get(varName);

if (varValue == null || varValue.trim().isEmpty()) {

// Handle missing or empty required variable

System.err.println("Error: Required environment variable '" + varName + "' is missing or empty.");

return null; // Indicate critical error

}

validatedVars.put(varName, varValue); // Add validated variable to the result

}

return validatedVars;

}

public static void main(String[] args) {

// Example usage:

Map<String, String> environment = new HashMap<>();

environment.put("API_KEY", "your_api_key");

environment.put("DEBUG_MODE", "true");

environment.put("DATABASE_URL", "jdbc:mysql://localhost:3306/mydb");

Map<String, String> required = new HashMap<>();

required.put("API_KEY", ""); // Simulate a missing API key

required.put("DEBUG_MODE", "false");

Map<String, String> validated = validateEnvVars(environment, required);

if (validated != null) {

System.out.println("Validated environment variables:");

for (Map.Entry<String, String> entry : validated.entrySet()) {

System.out.println(entry.getKey() + ": " + entry.getValue());

}

} else {

System.err.println("Validation failed. Check error messages.");

}

}

}