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From geomacy <...@git.apache.org>
Subject [GitHub] brooklyn-server pull request #186: Rename SimpleShellCommandTest to TestSshC...
Date Tue, 07 Jun 2016 13:25:06 GMT
Github user geomacy commented on a diff in the pull request:

    https://github.com/apache/brooklyn-server/pull/186#discussion_r66069064
  
    --- Diff: test-framework/src/main/java/org/apache/brooklyn/test/framework/TestSshCommandImpl.java
---
    @@ -0,0 +1,269 @@
    +/*
    + * 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.brooklyn.test.framework;
    +
    +import static org.apache.brooklyn.core.entity.lifecycle.Lifecycle.ON_FIRE;
    +import static org.apache.brooklyn.core.entity.lifecycle.Lifecycle.RUNNING;
    +import static org.apache.brooklyn.core.entity.lifecycle.Lifecycle.STARTING;
    +import static org.apache.brooklyn.core.entity.lifecycle.Lifecycle.STOPPED;
    +import static org.apache.brooklyn.core.entity.lifecycle.ServiceStateLogic.setExpectedState;
    +import static org.apache.brooklyn.test.framework.TestFrameworkAssertions.checkAssertions;
    +import static org.apache.brooklyn.test.framework.TestFrameworkAssertions.getAssertions;
    +import static org.apache.brooklyn.util.text.Strings.isBlank;
    +import static org.apache.brooklyn.util.text.Strings.isNonBlank;
    +
    +import java.net.MalformedURLException;
    +import java.net.URL;
    +import java.util.Arrays;
    +import java.util.Collection;
    +import java.util.Collections;
    +import java.util.Iterator;
    +import java.util.List;
    +import java.util.Map;
    +
    +import org.apache.brooklyn.api.location.Location;
    +import org.apache.brooklyn.api.mgmt.TaskFactory;
    +import org.apache.brooklyn.core.effector.ssh.SshEffectorTasks;
    +import org.apache.brooklyn.core.entity.lifecycle.Lifecycle;
    +import org.apache.brooklyn.core.location.Machines;
    +import org.apache.brooklyn.location.ssh.SshMachineLocation;
    +import org.apache.brooklyn.test.framework.TestFrameworkAssertions.AssertionSupport;
    +import org.apache.brooklyn.util.collections.MutableList;
    +import org.apache.brooklyn.util.core.task.DynamicTasks;
    +import org.apache.brooklyn.util.core.task.ssh.SshTasks;
    +import org.apache.brooklyn.util.core.task.system.ProcessTaskWrapper;
    +import org.apache.brooklyn.util.exceptions.Exceptions;
    +import org.apache.brooklyn.util.text.Identifiers;
    +import org.apache.brooklyn.util.text.Strings;
    +import org.apache.brooklyn.util.time.Duration;
    +import org.slf4j.Logger;
    +import org.slf4j.LoggerFactory;
    +
    +import com.google.common.base.Joiner;
    +import com.google.common.base.Splitter;
    +import com.google.common.base.Suppliers;
    +import com.google.common.collect.ImmutableList;
    +import com.google.common.collect.ImmutableMap;
    +import com.google.common.collect.Iterables;
    +
    +// TODO assertions below should use TestFrameworkAssertions but that class needs to be
improved to give better error messages
    +public class TestSshCommandImpl extends TargetableTestComponentImpl implements TestSshCommand
{
    +
    +    private static final Logger LOG = LoggerFactory.getLogger(TestSshCommandImpl.class);
    +    private static final int A_LINE = 80;
    +    public static final String DEFAULT_NAME = "download.sh";
    +    private static final String CD = "cd";
    +
    +    @Override
    +    public void start(Collection<? extends Location> locations) {
    +        setExpectedState(this, STARTING);
    +        execute();
    +    }
    +
    +    @Override
    +    public void stop() {
    +        LOG.debug("{} Stopping simple command", this);
    +        setUpAndRunState(false, STOPPED);
    +    }
    +
    +    @Override
    +    public void restart() {
    +        LOG.debug("{} Restarting simple command", this);
    +        execute();
    +    }
    +
    +    private void setUpAndRunState(boolean up, Lifecycle status) {
    +        sensors().set(SERVICE_UP, up);
    +        setExpectedState(this, status);
    +    }
    +
    +    private static class Result {
    +        int exitCode;
    +        String stdout;
    +        String stderr;
    +        public Result(final ProcessTaskWrapper<Integer> job) {
    +            exitCode = job.get();
    +            stdout = job.getStdout().trim();
    +            stderr = job.getStderr().trim();
    +        }
    +        public int getExitCode() {
    +            return exitCode;
    +        }
    +        public String getStdout() {
    +            return stdout;
    +        }
    +        public String getStderr() {
    +            return stderr;
    +        }
    +    }
    +
    +    protected void handle(Result result) {
    +        LOG.debug("{}, Result is {}\nwith output [\n{}\n] and error [\n{}\n]", new Object[]
{
    +            this, result.getExitCode(), shorten(result.getStdout()), shorten(result.getStderr())
    +        });
    +        ImmutableMap<String, Duration> flags = ImmutableMap.of("timeout", getConfig(TIMEOUT));
    +        AssertionSupport support = new AssertionSupport();
    +        checkAssertions(support, flags, exitCodeAssertions(), "exit code", Suppliers.ofInstance(result.getExitCode()));
    +        checkAssertions(support, flags, getAssertions(this, ASSERT_OUT), "stdout", Suppliers.ofInstance(result.getStdout()));
    +        checkAssertions(support, flags, getAssertions(this, ASSERT_ERR), "stderr", Suppliers.ofInstance(result.getStderr()));
    +        support.validate();
    +    }
    +
    +    private String shorten(String text) {
    +        return Strings.maxlenWithEllipsis(text, A_LINE);
    +    }
    +
    +    public void execute() {
    +        try {
    +            SshMachineLocation machineLocation =
    +                Machines.findUniqueMachineLocation(resolveTarget().getLocations(), SshMachineLocation.class).get();
    +            executeCommand(machineLocation);
    +            setUpAndRunState(true, RUNNING);
    +        } catch (Throwable t) {
    +            setUpAndRunState(false, ON_FIRE);
    +            throw Exceptions.propagate(t);
    +        }
    +    }
    +
    +    private void executeCommand(SshMachineLocation machineLocation) {
    +
    +        Result result = null;
    +        String downloadUrl = getConfig(DOWNLOAD_URL);
    +        String command = getConfig(COMMAND);
    +
    +        String downloadName = DOWNLOAD_URL.getName();
    +        String commandName = COMMAND.getName();
    +
    +        Map<String, Object> env = getConfig(SHELL_ENVIRONMENT);
    +        if (env == null) env = ImmutableMap.of();
    +        
    +        if (!(isNonBlank(downloadUrl) ^ isNonBlank(command))) {
    +            throw illegal("Must specify exactly one of", downloadName, "and", commandName);
    +        }
    +
    +        if (isNonBlank(downloadUrl)) {
    +            String scriptDir = getConfig(SCRIPT_DIR);
    +            String scriptPath = calculateDestPath(downloadUrl, scriptDir);
    +            result = executeDownloadedScript(machineLocation, downloadUrl, scriptPath,
env);
    +        }
    +
    +        if (isNonBlank(command)) {
    +            result = executeShellCommand(machineLocation, command, env);
    +        }
    +
    +        handle(result);
    +    }
    +
    +    private Result executeDownloadedScript(SshMachineLocation machineLocation, String
url, String scriptPath, Map<String, Object> env) {
    +
    +        TaskFactory<?> install = SshTasks.installFromUrl(ImmutableMap.<String,
Object>of(), machineLocation, url, scriptPath);
    +        DynamicTasks.queue(install);
    +        DynamicTasks.waitForLast();
    +
    +        List<String> commands = ImmutableList.<String>builder()
    +                .add("chmod u+x " + scriptPath)
    +                .addAll(maybeCdToRunDirCmd())
    +                .add(scriptPath)
    +                .build();
    +
    +        return runCommands(machineLocation, commands, env);
    +    }
    +
    +    private Result executeShellCommand(SshMachineLocation machineLocation, String command,
Map<String, Object> env) {
    +
    +        List<String> commands = ImmutableList.<String>builder()
    +                .addAll(maybeCdToRunDirCmd())
    +                .add(command)
    +                .build();
    +
    +        return runCommands(machineLocation, commands, env);
    +    }
    +
    +    private List<String> maybeCdToRunDirCmd() {
    +        String runDir = getConfig(RUN_DIR);
    +        if (!isBlank(runDir)) {
    +            return ImmutableList.of(CD + " " + runDir);
    +        } else {
    +            return ImmutableList.of();
    +        }
    +    }
    +
    +    private Result runCommands(SshMachineLocation machine, List<String> commands,
Map<String, Object> env) {
    +        @SuppressWarnings({ "unchecked", "rawtypes" })
    +        SshEffectorTasks.SshEffectorTaskFactory<Integer> etf = SshEffectorTasks.ssh(commands.toArray(new
String[]{}))
    +                .environmentVariables((Map<String, String>)(Map)env)
    +                .machine(machine);
    +
    +        ProcessTaskWrapper<Integer> job = DynamicTasks.queue(etf);
    +        job.asTask().blockUntilEnded();
    +        return new Result(job);
    +    }
    +
    +
    +
    +    private IllegalArgumentException illegal(String message, String... messages) {
    +        Iterable<String> allmsgs = Iterables.concat(MutableList.of(this.toString()
+ ":", message), Arrays.asList(messages));
    --- End diff --
    
    Just for interest, why change this from the previous implementation that just joined the
arrays?


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