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Support jclouds API for provisioning cloud locations
/*
* 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.location.jclouds;
import static org.apache.brooklyn.util.JavaGroovyEquivalents.groovyTruth;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;
import javax.annotation.Nullable;
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.core.location.BasicHardwareDetails;
import org.apache.brooklyn.core.location.BasicMachineDetails;
import org.apache.brooklyn.core.location.BasicOsDetails;
import org.apache.brooklyn.core.location.LocationConfigUtils;
import org.apache.brooklyn.core.location.LocationConfigUtils.OsCredential;
import org.apache.brooklyn.location.ssh.SshMachineLocation;
import org.apache.brooklyn.util.core.flags.SetFromFlag;
import org.apache.brooklyn.util.exceptions.Exceptions;
import org.apache.brooklyn.util.net.Networking;
import org.apache.brooklyn.util.text.Strings;
import org.jclouds.compute.ComputeServiceContext;
import org.jclouds.compute.callables.RunScriptOnNode;
import org.jclouds.compute.domain.ExecResponse;
import org.jclouds.compute.domain.Hardware;
import org.jclouds.compute.domain.Image;
import org.jclouds.compute.domain.NodeMetadata;
import org.jclouds.compute.domain.OperatingSystem;
import org.jclouds.compute.domain.OsFamily;
import org.jclouds.compute.domain.Processor;
import org.jclouds.compute.domain.Template;
import org.jclouds.compute.options.RunScriptOptions;
import org.jclouds.domain.LoginCredentials;
import org.jclouds.scriptbuilder.domain.InterpretableStatement;
import org.jclouds.scriptbuilder.domain.Statement;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.google.common.annotations.VisibleForTesting;
import com.google.common.base.Objects;
import com.google.common.base.Optional;
import com.google.common.base.Throwables;
import com.google.common.collect.ImmutableMap;
import com.google.common.collect.ImmutableSet;
import com.google.common.net.HostAndPort;
import com.google.common.util.concurrent.ListenableFuture;
public class JcloudsSshMachineLocation extends SshMachineLocation implements JcloudsMachineLocation {
private static final Logger LOG = LoggerFactory.getLogger(JcloudsSshMachineLocation.class);
@SetFromFlag
JcloudsLocation jcloudsParent;
/**
* @deprecated since 0.9.0; the node should not be persisted.
*/
@SetFromFlag
@Deprecated
NodeMetadata node;
/**
* @deprecated since 0.9.0; the template should not be persisted.
*/
@SetFromFlag
@Deprecated
Template template;
@SetFromFlag
String nodeId;
@SetFromFlag
String imageId;
@SetFromFlag
Set privateAddresses;
@SetFromFlag
Set publicAddresses;
@SetFromFlag
String hostname;
// Populated lazily, on first call to getSubnetHostname()
@SetFromFlag
String privateHostname;
/**
* Historically, "node" and "template" were persisted. However that is a very bad idea!
* It means we pull in lots of jclouds classes into the persisted state. We are at an
* intermediate stage, where we want to handle rebinding to old state that has "node"
* and new state that should not. We therefore leave in the {@code @SetFromFlag} on node
* so that we read it back, but we ensure the value is null when we write it out!
*
* TODO We will rename these to get rid of the ugly underscore when the old node/template
* fields are deleted.
*/
private transient Optional _node;
private transient Optional _template;
private transient Optional _image;
private RunScriptOnNode.Factory runScriptFactory;
public JcloudsSshMachineLocation() {
}
/**
* @deprecated since 0.6; use LocationSpec (which calls no-arg constructor)
*/
@Deprecated
public JcloudsSshMachineLocation(Map flags, JcloudsLocation jcloudsParent, NodeMetadata node) {
super(flags);
this.jcloudsParent = jcloudsParent;
init();
}
@Override
public void init() {
if (jcloudsParent != null) {
super.init();
ComputeServiceContext context = jcloudsParent.getComputeService().getContext();
runScriptFactory = context.utils().injector().getInstance(RunScriptOnNode.Factory.class);
if (node != null) {
setNode(node);
}
if (template != null) {
setTemplate(template);
}
} else {
// TODO Need to fix the rebind-detection, and not call init() on rebind.
// This will all change when locations become entities.
if (LOG.isDebugEnabled()) LOG.debug("Not doing init() of {} because parent not set; presuming rebinding", this);
}
}
@Override
public void rebind() {
super.rebind();
if (jcloudsParent != null) {
// can be null on rebind, if location has been "orphaned" somehow
ComputeServiceContext context = jcloudsParent.getComputeService().getContext();
runScriptFactory = context.utils().injector().getInstance(RunScriptOnNode.Factory.class);
} else {
LOG.warn("Location {} does not have parent; cannot retrieve jclouds compute-service or "
+ "run-script factory; later operations may fail (continuing)", this);
}
if (node != null) {
setNode(node);
node = null;
}
if (template != null) {
setTemplate(template);
template = null;
}
}
@Override
public String toVerboseString() {
return Objects.toStringHelper(this).omitNullValues()
.add("id", getId()).add("name", getDisplayName())
.add("user", getUser()).add("address", getAddress()).add("port", getConfig(SSH_PORT))
.add("node", _node)
.add("nodeId", getJcloudsId())
.add("imageId", getImageId())
.add("privateAddresses", getPrivateAddresses())
.add("publicAddresses", getPublicAddresses())
.add("parentLocation", getParent())
.add("osDetails", getOptionalOsDetails())
.toString();
}
protected void setNode(NodeMetadata node) {
this.node = null;
nodeId = node.getId();
imageId = node.getImageId();
privateAddresses = node.getPrivateAddresses();
publicAddresses = node.getPublicAddresses();
_node = Optional.of(node);
}
protected void setTemplate(Template template) {
this.template = null;
_template = Optional.of(template);
_image = Optional.fromNullable(template.getImage());
}
@Override
public Optional getOptionalNode() {
if (_node == null) {
_node = Optional.fromNullable(getParent().getComputeService().getNodeMetadata(nodeId));
}
return _node;
}
protected Optional getOptionalImage() {
if (_image == null) {
_image = Optional.fromNullable(getParent().getComputeService().getImage(imageId));
}
return _image;
}
/**
* @since 0.9.0
* @deprecated since 0.9.0 (only added as aid until the deprecated {@link #getTemplate()} is deleted)
*/
@Deprecated
protected Optional getOptionalTemplate() {
if (_template == null) {
_template = Optional.absent();
}
return _template;
}
/**
* @deprecated since 0.9.0
*/
@Override
@Deprecated
public NodeMetadata getNode() {
Optional result = getOptionalNode();
if (result.isPresent()) {
return result.get();
} else {
throw new IllegalStateException("Node "+nodeId+" not present in "+getParent());
}
}
@VisibleForTesting
Optional peekNode() {
return _node;
}
/**
* @deprecated since 0.9.0
*/
@Override
@Deprecated
public Template getTemplate() {
Optional result = getOptionalTemplate();
if (result.isPresent()) {
String msg = "Deprecated use of getTemplate() for "+this;
LOG.warn(msg + " - see debug log for stacktrace");
LOG.debug(msg, new Exception("for stacktrace"));
return result.get();
} else {
throw new IllegalStateException("Template for "+nodeId+" (in "+getParent()+") not cached (deprecated use of getTemplate())");
}
}
@Override
public JcloudsLocation getParent() {
return jcloudsParent;
}
@Override
public String getHostname() {
// Changed behaviour in Brooklyn 0.9.0. Previously it just did node.getHostname(), which
// was wrong on some clouds (e.g. vcloud-director, where VMs are often given a random
// hostname that does not resolve on the VM and is not in any DNS).
// Now delegates to jcloudsParent.getPublicHostname(node).
if (hostname == null) {
Optional node = getOptionalNode();
if (node.isPresent()) {
HostAndPort sshHostAndPort = getSshHostAndPort();
LoginCredentials creds = getLoginCredentials();
hostname = jcloudsParent.getPublicHostname(node.get(), Optional.of(sshHostAndPort), creds, config().getBag());
requestPersist();
} else {
// Fallback: impl taken (mostly) from jcloudsParent.getPublicHostnameGeneric(NodeMetadata, ConfigBag).
// But we won't have a node object (e.g. after rebind, and VM has been terminated).
// We also resort to address.getHostAddress as final fallback.
if (groovyTruth(getPublicAddresses())) {
hostname = getPublicAddresses().iterator().next();
} else if (groovyTruth(getPrivateAddresses())) {
hostname = getPrivateAddresses().iterator().next();
} else {
hostname = getAddress().getHostAddress();
}
}
LOG.debug("Resolved hostname {} for {}", hostname, this);
requestPersist();
}
return hostname;
}
/** In clouds like AWS, the public hostname is the only way to ensure VMs in different zones can access each other. */
@Override
public Set getPublicAddresses() {
return (publicAddresses == null) ? ImmutableSet.of() : publicAddresses;
}
@Override
public Set getPrivateAddresses() {
return (privateAddresses == null) ? ImmutableSet.of() : privateAddresses;
}
@Override
public String getSubnetHostname() {
if (privateHostname == null) {
Optional node = getOptionalNode();
if (node.isPresent()) {
// Prefer jcloudsLocation.getPrivateHostname(): it handles AWS hostname in a special way,
// by querying AWS for the hostname that resolves both inside and outside of the region.
// If we can't get the node (i.e. the cloud provider doesn't know that id, because it has
// been terminated), then we don't care as much about getting the right id!
HostAndPort sshHostAndPort = getSshHostAndPort();
LoginCredentials creds = getLoginCredentials();
privateHostname = jcloudsParent.getPrivateHostname(node.get(), Optional.of(sshHostAndPort), creds, config().getBag());
} else {
// Fallback: impl taken from jcloudsParent.getPrivateHostnameGeneric(NodeMetadata, ConfigBag).
// But we won't have a node object (e.g. after rebind, and VM has been terminated).
//prefer the private address to the hostname because hostname is sometimes wrong/abbreviated
//(see that javadoc; also e.g. on rackspace/cloudstack, the hostname is not registered with any DNS).
//Don't return local-only address (e.g. never 127.0.0.1)
for (String p : getPrivateAddresses()) {
if (Networking.isLocalOnly(p)) continue;
privateHostname = p;
break;
}
if (Strings.isBlank(privateHostname) && groovyTruth(getPublicAddresses())) {
privateHostname = getPublicAddresses().iterator().next();
} else if (Strings.isBlank(privateHostname)) {
privateHostname = getHostname();
}
}
requestPersist();
LOG.debug("Resolved subnet hostname {} for {}", privateHostname, this);
}
return privateHostname;
}
@Override
public String getSubnetIp() {
// Previous to Brooklyn 0.9.0, this could return the hostname or would try to do
// jcloudsParent.getPublicHostname, and return the resolved IP. That was clearly
// not a "subnet ip"!
Optional privateAddress = getPrivateAddress();
if (privateAddress.isPresent()) {
return privateAddress.get();
}
if (groovyTruth(node.getPublicAddresses())) {
return node.getPublicAddresses().iterator().next();
}
return null;
}
protected Optional getPrivateAddress() {
for (String p : getPrivateAddresses()) {
// disallow local only addresses
if (Networking.isLocalOnly(p)) continue;
// other things may be public or private, but either way, return it
return Optional.of(p);
}
return Optional.absent();
}
@Override
public String getJcloudsId() {
return nodeId;
}
protected String getImageId() {
return imageId;
}
/** executes the given statements on the server using jclouds ScriptBuilder,
* wrapping in a script which is polled periodically.
* the output is returned once the script completes (disadvantage compared to other methods)
* but the process is nohupped and the SSH session is not kept,
* so very useful for long-running processes
*
* @deprecated since 0.9.0; use standard {@link #execScript(String, List)} and the other variants.
*/
@Deprecated
public ListenableFuture submitRunScript(String ...statements) {
return submitRunScript(new InterpretableStatement(statements));
}
/**
* @deprecated since 0.9.0; use standard {@link #execScript(String, List)} and the other variants.
*/
@Deprecated
public ListenableFuture submitRunScript(Statement script) {
return submitRunScript(script, new RunScriptOptions());
}
/**
* @deprecated since 0.9.0; use standard {@link #execScript(String, List)} and the other variants.
*/
@Deprecated
public ListenableFuture submitRunScript(Statement script, RunScriptOptions options) {
Optional node = getOptionalNode();
if (node.isPresent()) {
return runScriptFactory.submit(node.get(), script, options);
} else {
throw new IllegalStateException("Node "+nodeId+" not present in "+getParent());
}
}
/**
* Uses submitRunScript to execute the commands, and throws error if it fails or returns non-zero
*
* @deprecated since 0.9.0; use standard {@link #execScript(String, List)} and the other variants.
*/
@Deprecated
public void execRemoteScript(String ...commands) {
try {
ExecResponse result = submitRunScript(commands).get();
if (result.getExitStatus()!=0)
throw new IllegalStateException("Error running remote commands (code "+result.getExitStatus()+"): "+commands);
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
throw Throwables.propagate(e);
} catch (ExecutionException e) {
throw Throwables.propagate(e);
}
}
/**
* Retrieves the password for this VM, if one exists. The behaviour/implementation is different for different clouds.
* e.g. on Rackspace, the password for a windows VM is available immediately; on AWS-EC2, for a Windows VM you need
* to poll repeatedly until the password is available which can take up to 15 minutes.
*
* @deprecated since 0.9.0; use the machine to execute commands, so no need to extract the password
*/
@Deprecated
public String waitForPassword() {
Optional node = getOptionalNode();
if (node.isPresent()) {
// TODO Hacky; don't want aws specific stuff here but what to do?!
if (jcloudsParent.getProvider().equals("aws-ec2")) {
try {
return JcloudsUtil.waitForPasswordOnAws(jcloudsParent.getComputeService(), node.get(), 15, TimeUnit.MINUTES);
} catch (TimeoutException e) {
throw Throwables.propagate(e);
}
} else {
LoginCredentials credentials = node.get().getCredentials();
return (credentials != null) ? credentials.getOptionalPassword().orNull() : null;
}
} else {
throw new IllegalStateException("Node "+nodeId+" not present in "+getParent());
}
}
private LoginCredentials getLoginCredentials() {
OsCredential creds = LocationConfigUtils.getOsCredential(config().getBag());
return LoginCredentials.builder()
.user(getUser())
.privateKey(creds.hasKey() ? creds.getPrivateKeyData() : null)
.password(creds.hasPassword() ? creds.getPassword() : null)
.build();
}
/**
* Returns the known OsDetails, without any attempt to retrieve them if not known.
*/
protected Optional getOptionalOsDetails() {
Optional machineDetails = getOptionalMachineDetails();
OsDetails result = machineDetails.isPresent() ? machineDetails.get().getOsDetails() : null;
return Optional.fromNullable(result);
}
protected Optional getOptionalOperatingSystem() {
Optional node = getOptionalNode();
OperatingSystem os = node.isPresent() ? node.get().getOperatingSystem() : null;
if (os == null) {
// some nodes (eg cloudstack, gce) might not get OS available on the node,
// so also try taking it from the image if available
Optional image = getOptionalImage();
if (image.isPresent()) {
os = image.get().getOperatingSystem();
}
}
return Optional.fromNullable(os);
}
protected Optional getOptionalHardware() {
Optional node = getOptionalNode();
return Optional.fromNullable(node.isPresent() ? node.get().getHardware() : null);
}
@Override
protected MachineDetails inferMachineDetails() {
Optional name = Optional.absent();
Optional version = Optional.absent();
Optional architecture = Optional.absent();
Optional os = getOptionalOperatingSystem();
Optional hardware = getOptionalHardware();
if (os.isPresent()) {
// Note using family rather than name. Name is often unset.
// Using is64Bit rather then getArch because getArch often returns "paravirtual"
OsFamily family = os.get().getFamily();
String versionRaw = os.get().getVersion();
boolean is64Bit = os.get().is64Bit();
name = Optional.fromNullable(family != null && !OsFamily.UNRECOGNIZED.equals(family) ? family.toString() : null);
version = Optional.fromNullable(Strings.isNonBlank(versionRaw) ? versionRaw : null);
architecture = Optional.fromNullable(is64Bit ? BasicOsDetails.OsArchs.X_86_64 : BasicOsDetails.OsArchs.I386);
}
Optional ram = hardware.isPresent() ? Optional.fromNullable(hardware.get().getRam()) : Optional.absent();
Optional cpus = hardware.isPresent() ? Optional.fromNullable(hardware.get().getProcessors() != null ? hardware.get().getProcessors().size() : null) : Optional.absent();
// Skip superclass' SSH to machine if all data is present, otherwise defer to super
if (name.isPresent() && version.isPresent() && architecture.isPresent() && ram.isPresent() && cpus.isPresent()) {
if (LOG.isTraceEnabled()) {
LOG.trace("Gathered machine details from Jclouds, skipping SSH test on {}", this);
}
OsDetails osD = new BasicOsDetails(name.get(), architecture.get(), version.get());
HardwareDetails hwD = new BasicHardwareDetails(cpus.get(), ram.get());
return new BasicMachineDetails(hwD, osD);
} else if ("false".equalsIgnoreCase(getConfig(JcloudsLocation.WAIT_FOR_SSHABLE))) {
if (LOG.isTraceEnabled()) {
LOG.trace("Machine details for {} missing from Jclouds, but skipping SSH test because waitForSshable=false. name={}, version={}, " +
"arch={}, ram={}, #cpus={}",
new Object[]{this, name, version, architecture, ram, cpus});
}
OsDetails osD = new BasicOsDetails(name.orNull(), architecture.orNull(), version.orNull());
HardwareDetails hwD = new BasicHardwareDetails(cpus.orNull(), ram.orNull());
return new BasicMachineDetails(hwD, osD);
} else {
if (LOG.isTraceEnabled()) {
LOG.trace("Machine details for {} missing from Jclouds, using SSH test instead. name={}, version={}, " +
"arch={}, ram={}, #cpus={}",
new Object[]{this, name, version, architecture, ram, cpus});
}
return super.inferMachineDetails();
}
}
@Override
public Map toMetadataRecord() {
Optional node = getOptionalNode();
Optional hardware = getOptionalHardware();
List processors = hardware.isPresent() ? hardware.get().getProcessors() : null;
ImmutableMap.Builder builder = ImmutableMap.builder();
builder.putAll(super.toMetadataRecord());
putIfNotNull(builder, "provider", getParent().getProvider());
putIfNotNull(builder, "account", getParent().getIdentity());
putIfNotNull(builder, "region", getParent().getRegion());
putIfNotNull(builder, "serverId", getJcloudsId());
putIfNotNull(builder, "imageId", getImageId());
putIfNotNull(builder, "instanceTypeName", (hardware.isPresent() ? hardware.get().getName() : null));
putIfNotNull(builder, "instanceTypeId", (hardware.isPresent() ? hardware.get().getProviderId() : null));
putIfNotNull(builder, "ram", "" + (hardware.isPresent() ? hardware.get().getRam() : null));
putIfNotNull(builder, "cpus", "" + (processors != null ? processors.size() : null));
try {
OsDetails osDetails = getOsDetails();
putIfNotNull(builder, "osName", osDetails.getName());
putIfNotNull(builder, "osArch", osDetails.getArch());
putIfNotNull(builder, "is64bit", osDetails.is64bit() ? "true" : "false");
} catch (Exception e) {
Exceptions.propagateIfFatal(e);
LOG.warn("Unable to get OS Details for "+node+"; continuing", e);
}
return builder.build();
}
private void putIfNotNull(ImmutableMap.Builder builder, String key, @Nullable String value) {
if (value != null) builder.put(key, value);
}
}
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