private static Optional<Protos.Credential> readCredentials() {
if (System.getenv("MESOS_AUTHENTICATE") != null) {
LOGGER.debug("Enabling authentication for the framework");
final String principal = System.getenv("DEFAULT_PRINCIPAL");
final String secret = System.getenv("DEFAULT_SECRET");
if (principal == null) {
LOGGER.error("Expecting authentication principal in the environment");
System.exit(1);
}
Protos.Credential.Builder credential = Protos.Credential.newBuilder().setPrincipal(principal);
if (secret == null) {
LOGGER.error("Expecting authentication secret in the environment");
} else {
credential.setSecret(ByteString.copyFrom(secret.getBytes()));
}
return Optional.of(credential.build());
} else {
return Optional.absent();
}
}
public static void main(String[] args) throws Exception {
Configuration configuration = new Configuration(args);
Protos.FrameworkInfo.Builder frameworkBuilder =
Protos.FrameworkInfo.newBuilder()
.setUser("") // Have Mesos fill in the current user.
.setName("Hello world example")
.setCheckpoint(true);
String principal = configuration.getFrameworkPrincipal();
if (principal != null) {
frameworkBuilder.setPrincipal(principal);
}
org.apache.mesos.Scheduler scheduler = new FrameworkScheduler(configuration);
Protos.FrameworkInfo frameworkInfo = frameworkBuilder.build();
String mesosMaster = configuration.getMesosMaster();
MesosSchedulerDriver driver =
principal != null
? new MesosSchedulerDriver(
scheduler,
frameworkInfo,
mesosMaster,
Protos.Credential.newBuilder()
.setPrincipal(principal)
.setSecret(configuration.getFrameworkSecret())
.build())
: new MesosSchedulerDriver(scheduler, frameworkInfo, mesosMaster);
// Ensure that the driver process terminates.
driver.stop();
if (driver.run() != Protos.Status.DRIVER_STOPPED) {
throw new RuntimeException("Mesos Scheduler Driver is not stopped");
}
}