public static VoldemortConfig loadFromEnvironmentVariable() {
String voldemortHome = System.getenv(VoldemortConfig.VOLDEMORT_HOME_VAR_NAME);
if (voldemortHome == null)
throw new ConfigurationException(
"No environment variable "
+ VoldemortConfig.VOLDEMORT_HOME_VAR_NAME
+ " has been defined, set it!");
String voldemortConfigDir = System.getenv(VoldemortConfig.VOLDEMORT_CONFIG_DIR);
if (voldemortConfigDir != null) {
if (!Utils.isReadableDir(voldemortConfigDir))
throw new ConfigurationException(
"Attempt to load configuration from VOLDEMORT_CONFIG_DIR, "
+ voldemortConfigDir
+ " failed. That is not a readable directory.");
}
return loadFromVoldemortHome(voldemortHome, voldemortConfigDir);
}
private int getIntEnvVariable(String name) {
String var = System.getenv(name);
if (var == null)
throw new ConfigurationException("The environment variable " + name + " is not defined.");
try {
return Integer.parseInt(var);
} catch (NumberFormatException e) {
throw new ConfigurationException(
"Invalid format for environment variable " + name + ", expecting an integer.", e);
}
}