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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 org.apache.hadoop.hbase;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import java.io.File;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.Optional;
import java.util.function.Consumer;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.client.AsyncAdmin;
import org.apache.hadoop.hbase.client.AsyncConnection;
import org.apache.hadoop.hbase.coprocessor.protobuf.generated.ShellExecEndpoint.ShellExecRequest;
import org.apache.hadoop.hbase.coprocessor.protobuf.generated.ShellExecEndpoint.ShellExecResponse;
import org.apache.hadoop.hbase.coprocessor.protobuf.generated.ShellExecEndpoint.ShellExecService;
import org.apache.hadoop.hbase.testclassification.MediumTests;
import org.junit.ClassRule;
import org.junit.Rule;
import org.junit.Test;
import org.junit.experimental.categories.Category;
/**
* Test for the {@link ShellExecEndpointCoprocessor}.
*/
@Category(MediumTests.class)
public class TestShellExecEndpointCoprocessor {
@ClassRule
public static final HBaseClassTestRule testRule =
HBaseClassTestRule.forClass(TestShellExecEndpointCoprocessor.class);
@ClassRule
public static final MiniClusterRule miniClusterRule = MiniClusterRule.newBuilder()
.setConfiguration(createConfiguration())
.build();
@Rule
public final ConnectionRule connectionRule =
new ConnectionRule(miniClusterRule::createConnection);
@Test
public void testShellExecUnspecified() {
testShellExecForeground(b -> {});
}
@Test
public void testShellExecForeground() {
testShellExecForeground(b -> b.setAwaitResponse(true));
}
private void testShellExecForeground(final Consumer<ShellExecRequest.Builder> consumer) {
final AsyncConnection conn = connectionRule.getConnection();
final AsyncAdmin admin = conn.getAdmin();
final String command = "echo -n \"hello world\"";
final ShellExecRequest.Builder builder = ShellExecRequest.newBuilder()
.setCommand(command);
consumer.accept(builder);
final ShellExecResponse resp = admin
.<ShellExecService.Stub, ShellExecResponse>coprocessorService(
ShellExecService::newStub,
(stub, controller, callback) -> stub.shellExec(controller, builder.build(), callback))
.join();
assertEquals(0, resp.getExitCode());
assertEquals("hello world", resp.getStdout());
}
@Test
public void testShellExecBackground() throws IOException {
final AsyncConnection conn = connectionRule.getConnection();
final AsyncAdmin admin = conn.getAdmin();
final File testDataDir = ensureTestDataDirExists(miniClusterRule.getTestingUtility());
final File testFile = new File(testDataDir, "shell_exec_background.txt");
assertTrue(testFile.createNewFile());
assertEquals(0, testFile.length());
final String command = "echo \"hello world\" >> " + testFile.getAbsolutePath();
final ShellExecRequest req = ShellExecRequest.newBuilder()
.setCommand(command)
.setAwaitResponse(false)
.build();
final ShellExecResponse resp = admin
.<ShellExecService.Stub, ShellExecResponse>coprocessorService(
ShellExecService::newStub,
(stub, controller, callback) -> stub.shellExec(controller, req, callback))
.join();
assertFalse("the response from a background task should have no exit code", resp.hasExitCode());
assertFalse("the response from a background task should have no stdout", resp.hasStdout());
assertFalse("the response from a background task should have no stderr", resp.hasStderr());
Waiter.waitFor(conn.getConfiguration(), 5_000, () -> testFile.length() > 0);
final String content = new String(Files.readAllBytes(testFile.toPath())).trim();
assertEquals("hello world", content);
}
private static File ensureTestDataDirExists(
final HBaseTestingUtility testingUtility
) throws IOException {
final Path testDataDir = Optional.of(testingUtility)
.map(HBaseTestingUtility::getDataTestDir)
.map(Object::toString)
.map(val -> Paths.get(val))
.orElseThrow(() -> new RuntimeException("Unable to locate temp directory path."));
final File testDataDirFile = Files.createDirectories(testDataDir).toFile();
assertTrue(testDataDirFile.exists());
return testDataDirFile;
}
private static Configuration createConfiguration() {
final Configuration conf = HBaseConfiguration.create();
conf.set("hbase.coprocessor.master.classes", ShellExecEndpointCoprocessor.class.getName());
return conf;
}
}