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PodExecTest.java
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/*
* Copyright (C) 2015 Red Hat, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package io.fabric8.kubernetes.client.mock;
import io.fabric8.kubernetes.api.model.PodBuilder;
import io.fabric8.kubernetes.api.model.PodStatus;
import io.fabric8.kubernetes.api.model.PodStatusBuilder;
import io.fabric8.kubernetes.api.model.Status;
import io.fabric8.kubernetes.api.model.StatusBuilder;
import io.fabric8.kubernetes.client.KubernetesClient;
import io.fabric8.kubernetes.client.KubernetesClientException;
import io.fabric8.kubernetes.client.dsl.ContainerResource;
import io.fabric8.kubernetes.client.dsl.ExecWatch;
import io.fabric8.kubernetes.client.dsl.PodResource;
import io.fabric8.kubernetes.client.server.mock.EnableKubernetesMockClient;
import io.fabric8.kubernetes.client.server.mock.KubernetesMockServer;
import io.fabric8.kubernetes.client.utils.Serialization;
import io.fabric8.mockwebserver.internal.WebSocketMessage;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.DisplayName;
import org.junit.jupiter.api.Test;
import java.util.concurrent.TimeUnit;
import static org.assertj.core.api.Assertions.assertThat;
import static org.assertj.core.api.Assertions.assertThatThrownBy;
import static org.junit.jupiter.api.Assertions.assertThrows;
@SuppressWarnings("unused")
@EnableKubernetesMockClient(crud = true)
class PodExecTest {
private static PodStatus READY = new PodStatusBuilder().addNewCondition().withType("Ready").withStatus("True").endCondition()
.build();
private KubernetesMockServer server;
private KubernetesClient client;
@BeforeEach
void setUp() {
client.pods().inAnyNamespace().delete();
}
@Test
@DisplayName("With no containers, should throw exception")
void withNoContainers() {
client.pods().resource(new PodBuilder().withNewMetadata().withName("no-containers").endMetadata().withStatus(READY).build())
.createOrReplace();
final PodResource pr = client.pods().withName("no-containers");
assertThatThrownBy(() -> pr.exec("sh", "-c", "echo Greetings Professor Falken"))
.isInstanceOf(KubernetesClientException.class)
.hasMessage("Pod has no containers!");
}
@Test
@DisplayName("With single container, should exec in the single container")
void withSingleContainer() throws Exception {
client.pods().resource(new PodBuilder().withNewMetadata().withName("single-container").endMetadata()
.withNewSpec()
.addNewContainer()
.withName("the-single-container")
.endContainer()
.endSpec().withStatus(READY)
.build())
.createOrReplace();
server.expect()
.get()
.withPath(
"/api/v1/namespaces/test/pods/single-container/exec?command=sleep%201&container=the-single-container&stderr=true")
.andUpgradeToWebSocket()
.open()
.immediately().andEmit(exitZeroEvent())
.done()
.always();
final ExecWatch result = client.pods().withName("single-container").redirectingError().exec("sleep 1");
assertThat(result.exitCode().get(1, TimeUnit.SECONDS)).isZero();
}
@Test
@DisplayName("With single container and inContainer with non-existent name, should throw exception")
void withSingleContainerAndInContainer() {
client.pods().resource(new PodBuilder().withNewMetadata().withName("single-container").endMetadata()
.withNewSpec()
.addNewContainer()
.withName("the-single-container")
.endContainer()
.endSpec().withStatus(READY)
.build())
.createOrReplace();
final ContainerResource cr = client.pods().withName("single-container").inContainer("non-existent");
assertThatThrownBy(() -> cr.exec("exit 0"))
.isInstanceOf(KubernetesClientException.class)
.hasMessage("container non-existent not found in pod single-container");
}
@Test
void execNoStreams() throws Exception {
client.pods().resource(new PodBuilder().withNewMetadata().withName("name").endMetadata()
.withNewSpec()
.addNewContainer()
.withName("the-first-container")
.endContainer()
.endSpec().withStatus(READY)
.build())
.createOrReplace();
PodResource op = client.pods().withName("name");
assertThrows(KubernetesClientException.class, () -> op.exec("sleep 1"));
}
@Test
@DisplayName("With multiple containers, should exec in the first container")
void withMultipleContainers() throws Exception {
client.pods().resource(new PodBuilder().withNewMetadata().withName("multiple-containers").endMetadata()
.withNewSpec()
.addNewContainer()
.withName("the-first-container")
.endContainer()
.addNewContainer()
.withName("the-second-container")
.endContainer()
.endSpec().withStatus(READY)
.build())
.createOrReplace();
server.expect()
.get()
.withPath(
"/api/v1/namespaces/test/pods/multiple-containers/exec?command=sleep%201&container=the-first-container&stderr=true")
.andUpgradeToWebSocket()
.open()
.immediately().andEmit(exitZeroEvent())
.done()
.always();
final ExecWatch result = client.pods().withName("multiple-containers").redirectingError().exec("sleep 1");
assertThat(result.exitCode().get(1, TimeUnit.SECONDS)).isZero();
}
@Test
@DisplayName("With multiple containers and inContainer with existent name, should exec in the selected container")
void withMultipleContainersAndInContainer() throws Exception {
client.pods().resource(new PodBuilder().withNewMetadata().withName("multiple-containers").endMetadata()
.withNewSpec()
.addNewContainer()
.withName("the-first-container")
.endContainer()
.addNewContainer()
.withName("the-second-container")
.endContainer()
.endSpec().withStatus(READY)
.build())
.createOrReplace();
server.expect()
.get()
.withPath(
"/api/v1/namespaces/test/pods/multiple-containers/exec?command=sleep%201&container=the-second-container&stderr=true")
.andUpgradeToWebSocket()
.open()
.immediately().andEmit(exitZeroEvent())
.done()
.always();
final ExecWatch result = client.pods().withName("multiple-containers").inContainer("the-second-container")
.redirectingError().exec("sleep 1");
assertThat(result.exitCode().get(1, TimeUnit.SECONDS)).isZero();
}
private static WebSocketMessage exitZeroEvent() {
final Status success = new StatusBuilder().withStatus("Success").build();
return new WebSocketMessage(0L, "\u0003" + Serialization.asJson(success), false, true);
}
}