| /* |
| * 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.core.location; |
| |
| import static com.google.common.base.Preconditions.checkNotNull; |
| |
| import java.io.BufferedReader; |
| import java.io.IOException; |
| import java.util.AbstractMap; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Map.Entry; |
| |
| import javax.annotation.Nonnull; |
| import javax.annotation.concurrent.Immutable; |
| |
| import org.apache.brooklyn.api.location.HardwareDetails; |
| import org.apache.brooklyn.api.location.MachineDetails; |
| import org.apache.brooklyn.api.location.OsDetails; |
| import org.apache.brooklyn.api.mgmt.Task; |
| import org.apache.brooklyn.location.ssh.SshMachineLocation; |
| import org.apache.brooklyn.util.core.ResourceUtils; |
| import org.apache.brooklyn.util.core.task.DynamicTasks; |
| import org.apache.brooklyn.util.core.task.TaskTags; |
| import org.apache.brooklyn.util.core.task.ssh.internal.PlainSshExecTaskFactory; |
| import org.apache.brooklyn.util.core.task.system.ProcessTaskWrapper; |
| import org.apache.brooklyn.util.stream.Streams; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import com.google.common.annotations.Beta; |
| import com.google.common.base.CharMatcher; |
| import com.google.common.base.Function; |
| import com.google.common.base.Joiner; |
| import com.google.common.base.Objects; |
| import com.google.common.base.Optional; |
| import com.google.common.base.Splitter; |
| import com.google.common.base.Throwables; |
| import com.google.common.collect.Maps; |
| import com.google.common.io.CharStreams; |
| |
| @Immutable |
| public class BasicMachineDetails implements MachineDetails { |
| |
| public static final Logger LOG = LoggerFactory.getLogger(BasicMachineDetails.class); |
| |
| private final HardwareDetails hardwareDetails; |
| private final OsDetails osDetails; |
| |
| public BasicMachineDetails(HardwareDetails hardwareDetails, OsDetails osDetails) { |
| this.hardwareDetails = checkNotNull(hardwareDetails, "hardwareDetails"); |
| this.osDetails = checkNotNull(osDetails, "osDetails"); |
| } |
| |
| @Nonnull |
| @Override |
| public HardwareDetails getHardwareDetails() { |
| return hardwareDetails; |
| } |
| |
| @Nonnull |
| @Override |
| public OsDetails getOsDetails() { |
| return osDetails; |
| } |
| |
| @Override |
| public String toString() { |
| return Objects.toStringHelper(MachineDetails.class) |
| .add("os", osDetails) |
| .add("hardware", hardwareDetails) |
| .toString(); |
| } |
| |
| /** |
| * Creates a MachineDetails for the given location by SSHing to the machine and |
| * running a Bash script to gather data. Should only be called from within a |
| * task context. If this might not be the case then use {@link |
| * #taskForSshMachineLocation(SshMachineLocation)} instead. |
| */ |
| @Beta |
| public static BasicMachineDetails forSshMachineLocationLive(SshMachineLocation location) { |
| return TaskTags.markInessential(DynamicTasks.queueIfPossible(taskForSshMachineLocation(location)) |
| .orSubmitAsync() |
| .asTask()) |
| .getUnchecked(); |
| } |
| |
| /** |
| * @return A task that gathers machine details by SSHing to the machine and running |
| * a Bash script to gather data. |
| */ |
| public static Task<BasicMachineDetails> taskForSshMachineLocation(SshMachineLocation location) { |
| BufferedReader reader = new BufferedReader(Streams.reader( |
| new ResourceUtils(BasicMachineDetails.class).getResourceFromUrl( |
| "classpath://org/apache/brooklyn/location/basic/os-details.sh"))); |
| List<String> script; |
| try { |
| script = CharStreams.readLines(reader); |
| } catch (IOException e) { |
| LOG.error("Error reading os-details script", e); |
| throw Throwables.propagate(e); |
| } finally { |
| try { |
| reader.close(); |
| } catch (IOException e) { |
| // Not rethrowing e because it might obscure an exception caught by the first catch |
| LOG.error("Error closing os-details script reader", e); |
| } |
| } |
| Task<BasicMachineDetails> task = new PlainSshExecTaskFactory<String>(location, script) |
| .summary("Getting machine details for: " + location) |
| .requiringZeroAndReturningStdout() |
| .returning(taskToMachineDetailsFunction(location)) |
| .newTask() |
| .asTask(); |
| |
| return task; |
| } |
| |
| private static Function<ProcessTaskWrapper<?>, BasicMachineDetails> taskToMachineDetailsFunction(final SshMachineLocation location) { |
| return new Function<ProcessTaskWrapper<?>, BasicMachineDetails>() { |
| @Override |
| public BasicMachineDetails apply(ProcessTaskWrapper<?> input) { |
| if (input.getExitCode() != 0) { |
| LOG.warn("Non-zero exit code when fetching machine details for {}; guessing anonymous linux", location); |
| return new BasicMachineDetails(new BasicHardwareDetails(null, null), |
| BasicOsDetails.Factory.ANONYMOUS_LINUX); |
| } |
| |
| String stdout = input.getStdout(); |
| if (LOG.isDebugEnabled()) { |
| LOG.debug("Found following details at {}: {}", location, stdout); |
| } |
| |
| // See https://issues.apache.org/jira/browse/BROOKLYN-475: |
| // If using splitter.withKeyValueSeparator, it fails with "Chunk ... is not a valid entry" |
| // if a line contains more than one ":"; therefore filter those out ourselves. |
| Iterable<String> lines = Splitter.on(CharMatcher.anyOf("\r\n")) |
| .omitEmptyStrings() |
| .split(stdout); |
| |
| Map<String, String> details = Maps.newHashMap(); |
| for (String line : lines) { |
| Optional<Entry<String, String>> detail = splitLine(line, ":"); |
| if (detail.isPresent()) { |
| details.put(detail.get().getKey(), detail.get().getValue()); |
| } |
| } |
| |
| String name = details.remove("name"); |
| String version = details.remove("version"); |
| String architecture = details.remove("architecture"); |
| Integer ram = intOrNull(details, "ram"); |
| Integer cpuCount = intOrNull(details, "cpus"); |
| if (!details.isEmpty()) { |
| LOG.debug("Unused keys from os-details script: " + Joiner.on(", ").join(details.keySet())); |
| } |
| |
| OsDetails osDetails = new BasicOsDetails(name, architecture, version); |
| HardwareDetails hardwareDetails = new BasicHardwareDetails(cpuCount, ram); |
| BasicMachineDetails machineDetails = new BasicMachineDetails(hardwareDetails, osDetails); |
| |
| if (LOG.isDebugEnabled()) |
| LOG.debug("Machine details for {}: {}", location, machineDetails); |
| |
| return machineDetails; |
| } |
| |
| private Integer intOrNull(Map<String, String> details, String key) { |
| try { |
| return Integer.valueOf(details.remove(key)); |
| } catch (NumberFormatException e) { |
| return null; |
| } |
| } |
| |
| private Optional<Map.Entry<String, String>> splitLine(String sequence, String separator) { |
| int index = sequence.indexOf(separator); |
| if (index < 0) { |
| return Optional.absent(); // ignore |
| } else { |
| String key = sequence.substring(0, index).trim(); |
| String value = sequence.substring(index+1).trim(); |
| return Optional.<Map.Entry<String, String>>of(new AbstractMap.SimpleEntry<>(key, value)); |
| } |
| } |
| }; |
| } |
| |
| } |