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// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.hosted.node.admin.docker;
import com.google.common.net.InetAddresses;
import com.yahoo.config.provision.DockerImage;
import com.yahoo.vespa.hosted.dockerapi.Container;
import com.yahoo.vespa.hosted.dockerapi.ContainerEngine;
import com.yahoo.vespa.hosted.dockerapi.ContainerName;
import com.yahoo.vespa.hosted.dockerapi.ProcessResult;
import com.yahoo.vespa.hosted.node.admin.nodeagent.ContainerData;
import com.yahoo.vespa.hosted.node.admin.nodeagent.NodeAgentContext;
import com.yahoo.vespa.hosted.node.admin.nodeagent.NodeAgentContextImpl;
import com.yahoo.vespa.hosted.node.admin.task.util.network.IPAddresses;
import com.yahoo.vespa.hosted.node.admin.task.util.network.IPAddressesMock;
import com.yahoo.vespa.hosted.node.admin.task.util.process.TestTerminal;
import com.yahoo.vespa.test.file.TestFileSystem;
import org.junit.Test;
import org.mockito.InOrder;
import java.net.InetAddress;
import java.nio.file.FileSystem;
import java.util.List;
import java.util.Optional;
import java.util.OptionalLong;
import java.util.Set;
import static org.hamcrest.core.Is.is;
import static org.junit.Assert.assertThat;
import static org.mockito.ArgumentMatchers.any;
import static org.mockito.ArgumentMatchers.eq;
import static org.mockito.Mockito.inOrder;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.times;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;
public class ContainerOperationsImplTest {
private final ContainerEngine containerEngine = mock(ContainerEngine.class);
private final TestTerminal terminal = new TestTerminal();
private final IPAddresses ipAddresses = new IPAddressesMock();
private final FileSystem fileSystem = TestFileSystem.create();
private final ContainerOperationsImpl containerOperations = new ContainerOperationsImpl(
containerEngine, terminal, ipAddresses, fileSystem);
@Test
public void processResultFromNodeProgramWhenSuccess() {
final NodeAgentContext context = new NodeAgentContextImpl.Builder("container-123.domain.tld").build();
final ProcessResult actualResult = new ProcessResult(0, "output", "errors");
when(containerEngine.executeInContainerAsUser(any(), any(), any(), any()))
.thenReturn(actualResult); // output from node program
ProcessResult result = containerOperations.executeNodeCtlInContainer(context, "start");
final InOrder inOrder = inOrder(containerEngine);
inOrder.verify(containerEngine, times(1)).executeInContainerAsUser(
eq(context.containerName()),
eq("root"),
eq(OptionalLong.empty()),
eq("/opt/vespa/bin/vespa-nodectl"),
eq("start"));
assertThat(result, is(actualResult));
}
@Test(expected = RuntimeException.class)
public void processResultFromNodeProgramWhenNonZeroExitCode() {
final NodeAgentContext context = new NodeAgentContextImpl.Builder("container-123.domain.tld").build();
final ProcessResult actualResult = new ProcessResult(3, "output", "errors");
when(containerEngine.executeInContainerAsUser(any(), any(), any(), any()))
.thenReturn(actualResult); // output from node program
containerOperations.executeNodeCtlInContainer(context, "start");
}
@Test
public void runsCommandInNetworkNamespace() {
NodeAgentContext context = new NodeAgentContextImpl.Builder("container-42.domain.tld").build();
makeContainer("container-42", Container.State.RUNNING, 42);
terminal.expectCommand("nsenter --net=/proc/42/ns/net -- iptables -nvL 2>&1");
containerOperations.executeCommandInNetworkNamespace(context, "iptables", "-nvL");
}
private Container makeContainer(String name, Container.State state, int pid) {
final Container container = new Container(name + ".fqdn", DockerImage.fromString("registry.example.com/mock"), null,
new ContainerName(name), state, pid);
when(containerEngine.getContainer(eq(container.name))).thenReturn(Optional.of(container));
return container;
}
@Test
public void verifyEtcHosts() {
ContainerData containerData = mock(ContainerData.class);
String hostname = "hostname";
InetAddress ipV6Local = InetAddresses.forString("::1");
InetAddress ipV4Local = InetAddresses.forString("127.0.0.1");
containerOperations.addEtcHosts(containerData, hostname, Optional.empty(), Optional.of(ipV6Local));
verify(containerData, times(1)).addFile(
fileSystem.getPath("/etc/hosts"),
"# This file was generated by com.yahoo.vespa.hosted.node.admin.docker.ContainerOperationsImpl\n" +
"127.0.0.1 localhost\n" +
"::1 localhost ip6-localhost ip6-loopback\n" +
"fe00::0 ip6-localnet\n" +
"ff00::0 ip6-mcastprefix\n" +
"ff02::1 ip6-allnodes\n" +
"ff02::2 ip6-allrouters\n" +
"0:0:0:0:0:0:0:1 hostname\n");
containerOperations.addEtcHosts(containerData, hostname, Optional.of(ipV4Local), Optional.of(ipV6Local));
verify(containerData, times(1)).addFile(
fileSystem.getPath("/etc/hosts"),
"# This file was generated by com.yahoo.vespa.hosted.node.admin.docker.ContainerOperationsImpl\n" +
"127.0.0.1 localhost\n" +
"::1 localhost ip6-localhost ip6-loopback\n" +
"fe00::0 ip6-localnet\n" +
"ff00::0 ip6-mcastprefix\n" +
"ff02::1 ip6-allnodes\n" +
"ff02::2 ip6-allrouters\n" +
"0:0:0:0:0:0:0:1 hostname\n" +
"127.0.0.1 hostname\n");
}
@Test
public void retainContainersTest() {
when(containerEngine.listManagedContainers(ContainerOperationsImpl.MANAGER_NAME))
.thenReturn(List.of(new ContainerName("cnt1"), new ContainerName("cnt2"), new ContainerName("cnt3")));
containerOperations.retainManagedContainers(any(), Set.of(new ContainerName("cnt2"), new ContainerName("cnt4")));
verify(containerEngine).stopContainer(eq(new ContainerName("cnt1")));
verify(containerEngine).deleteContainer(eq(new ContainerName("cnt1")));
verify(containerEngine).stopContainer(eq(new ContainerName("cnt3")));
verify(containerEngine).deleteContainer(eq(new ContainerName("cnt3")));
}
}
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