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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.model;
import com.yahoo.config.model.producer.TreeConfigProducer;
import com.yahoo.config.model.test.MockRoot;
import com.yahoo.config.provision.NetworkPorts;
import org.junit.jupiter.api.Test;
import java.util.ArrayList;
import java.util.List;
import static org.hamcrest.Matchers.containsString;
import static org.hamcrest.Matchers.is;
import static org.junit.jupiter.api.Assertions.assertThrows;
import static org.hamcrest.MatcherAssert.assertThat;
/**
* @author arnej
*/
public class HostPortsTest {
@Test
void next_available_baseport_is_BASE_PORT_when_no_ports_have_been_reserved() {
HostPorts host = new HostPorts("myhostname");
assertThat(host.nextAvailableBaseport(1), is(HostPorts.BASE_PORT));
}
@Test
void next_available_baseport_is_BASE_PORT_plus_one_when_one_port_has_been_reserved() {
HostPorts host = new HostPorts("myhostname");
MockRoot root = new MockRoot();
host.reservePort(new TestService(root, 1), HostPorts.BASE_PORT);
assertThat(host.nextAvailableBaseport(1), is(HostPorts.BASE_PORT + 1));
}
@Test
void no_available_baseport_when_service_requires_more_consecutive_ports_than_available() {
HostPorts host = new HostPorts("myhostname");
MockRoot root = new MockRoot();
for (int p = HostPorts.BASE_PORT; p < HostPorts.BASE_PORT + HostPorts.MAX_PORTS; p += 2) {
host.reservePort(new TestService(root, 1), p);
}
assertThat(host.nextAvailableBaseport(2), is(0));
try {
host.reservePort(new TestService(root, 2), HostPorts.BASE_PORT);
} catch (RuntimeException e) {
assertThat(e.getMessage(), containsString("Too many ports are reserved"));
}
}
@Test
void port_above_vespas_port_range_can_be_reserved() {
HostPorts host = new HostPorts("myhostname");
MockRoot root = new MockRoot();
host.allocatePorts(new TestService(root, 1), HostPorts.BASE_PORT + HostPorts.MAX_PORTS + 1);
}
@Test
void allocating_same_port_throws_exception() {
assertThrows(RuntimeException.class, () -> {
HostPorts host = new HostPorts("myhostname");
MockRoot root = new MockRoot();
TestService service1 = new TestService(root, 1);
TestService service2 = new TestService(root, 1);
host.allocatePorts(service1, HostPorts.BASE_PORT);
host.allocatePorts(service2, HostPorts.BASE_PORT);
});
}
@Test
void allocating_overlapping_ports_throws_exception() {
assertThrows(RuntimeException.class, () -> {
HostPorts host = new HostPorts("myhostname");
MockRoot root = new MockRoot();
TestService service2 = new TestService(root, 2);
TestService service1 = new TestService(root, 1);
host.allocatePorts(service2, HostPorts.BASE_PORT);
host.allocatePorts(service1, HostPorts.BASE_PORT + 1);
});
}
NetworkPorts emulOldPorts() {
List<NetworkPorts.Allocation> list = new ArrayList<>();
list.add(new NetworkPorts.Allocation(8080, "qrs", "foo", "http"));
list.add(new NetworkPorts.Allocation(19101, "slobrok", "slobrok.0", "http"));
return new NetworkPorts(list);
}
@Test
void use_old_port_when_available() {
HostPorts host = new HostPorts("myhostname");
host.addNetworkPorts(emulOldPorts());
MockRoot root = new MockRoot();
Service service = new MockSlobrok(root, 0);
assertThat(service.getConfigId(), is("slobrok.0"));
// check that matching service get port from saved allocations
List<Integer> ports = host.allocatePorts(service, 0);
assertThat(ports.size(), is(1));
assertThat(ports.get(0), is(19101));
// check that new service get next free port
ports = host.allocatePorts(new MockSlobrok(root, 1), 0);
assertThat(ports.get(0), is(19100));
// check that new service get next free port, skipping the allocated one
ports = host.allocatePorts(new MockSlobrok(root, 2), 0);
assertThat(ports.get(0), is(19102));
}
private static class MockSlobrok extends AbstractService {
MockSlobrok(TreeConfigProducer parent, int number) {
super(parent, "slobrok."+number);
}
@Override public int getPortCount() { return 1; }
@Override public String getServiceType() { return "slobrok"; }
@Override
public void allocatePorts(int start, PortAllocBridge from) {
from.allocatePort("http");
}
}
private static int counter = 0;
int getCounter() { return ++counter; }
private class TestService extends AbstractService {
private final int portCount;
TestService(TreeConfigProducer parent, int portCount) {
super(parent, "testService" + getCounter());
this.portCount = portCount;
}
@Override
public boolean requiresWantedPort() {
return true;
}
@Override
public int getPortCount() { return portCount; }
@Override
public void allocatePorts(int start, PortAllocBridge from) {
for (int i = 0; i < portCount; i++) {
String suffix = "generic." + i;
if (start == 0) {
from.allocatePort(suffix);
} else {
from.requirePort(start++, suffix);
}
}
}
}
}
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