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/*
* Copyright (c) 2010-2015 Pivotal Software, Inc. All rights reserved.
*
* 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. See accompanying
* LICENSE file.
*/
package com.gemstone.gemfire.admin.internal;
import java.net.InetAddress;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Properties;
import java.util.Set;
import com.gemstone.gemfire.CancelException;
import com.gemstone.gemfire.SystemFailure;
import com.gemstone.gemfire.admin.AdminDistributedSystem;
import com.gemstone.gemfire.admin.AdminException;
import com.gemstone.gemfire.admin.CacheDoesNotExistException;
import com.gemstone.gemfire.admin.ConfigurationParameter;
import com.gemstone.gemfire.admin.RuntimeAdminException;
import com.gemstone.gemfire.admin.StatisticResource;
import com.gemstone.gemfire.admin.SystemMemberCache;
import com.gemstone.gemfire.admin.SystemMemberType;
import com.gemstone.gemfire.distributed.DistributedMember;
import com.gemstone.gemfire.distributed.Role;
import com.gemstone.gemfire.distributed.internal.DistributionConfig;
import com.gemstone.gemfire.distributed.internal.DistributionConfigImpl;
import com.gemstone.gemfire.distributed.internal.membership.InternalDistributedMember;
import com.gemstone.gemfire.i18n.LogWriterI18n;
import com.gemstone.gemfire.internal.Config;
import com.gemstone.gemfire.internal.ConfigSource;
import com.gemstone.gemfire.internal.admin.GemFireVM;
import com.gemstone.gemfire.internal.admin.StatResource;
import com.gemstone.gemfire.internal.i18n.LocalizedStrings;
/**
* Member of a GemFire system.
*
* @author Kirk Lund
* @since 3.5
*/
public class SystemMemberImpl
implements com.gemstone.gemfire.admin.SystemMember,
com.gemstone.gemfire.admin.internal.ConfigurationParameterListener {
/** Identifying name of this member.
* Note that by default this is the string form of internalId but the
* ManagedSystemMemberImpl subclass resets it to getNewId()
*/
protected String id;
/** Unique internal id that the system impl identifies this member with */
protected InternalDistributedMember internalId;
/** The name of this system member */
protected String name;
/** Host name of the machine this member resides on */
protected String host;
/** The internal configuration this impl delegates to for runtime config */
// private Config config;
/** The configuration parameters for this member. Maps the name of
the ConfigurationParameter to the ConfigurationParameter. */
protected Map parms = new HashMap();
/** The {@link AdminDistributedSystem} this is a member of */
protected AdminDistributedSystem system;
/** Internal GemFire vm to delegate to */
private GemFireVM vm;
// -------------------------------------------------------------------------
// Constructor(s)
// -------------------------------------------------------------------------
/**
* Constructs new SystemMemberImpl for a
* ManagedEntity that has yet to be started.
*
* @param system the distributed system this member belongs to
*/
protected SystemMemberImpl(AdminDistributedSystem system)
throws AdminException {
this.system = system;
refreshConfig(getDefaultConfig());
}
/**
* Constructs new SystemMemberImpl from the given
* GemFireVM. This constructor is invoked when we
* discover a new member of the distributed system.
*
* @param system the distributed system this member belongs to
* @param vm internal GemFire vm to delegate to
*/
public SystemMemberImpl(AdminDistributedSystem system,
GemFireVM vm)
throws AdminException {
this(system);
setGemFireVM(vm);
}
/**
* Constructs the instance of SystemMember using the corresponding
* InternalDistributedMember instance of a DS member for the given
* AdminDistributedSystem.
*
* @param system
* Current AdminDistributedSystem instance
* @param member
* InternalDistributedMember instance for which a SystemMember
* instance is to be constructed.
* @throws AdminException
* if construction of SystemMember fails
*
* @since 6.5
*/
protected SystemMemberImpl(AdminDistributedSystem system,
InternalDistributedMember member)
throws AdminException {
this(system);
updateByInternalDistributedMember(member);
}
// -------------------------------------------------------------------------
// Attribute accessors and mutators
// -------------------------------------------------------------------------
/**
* Returns a Config object with the appropriate default
* values for a newly-created system member.
*/
protected Config getDefaultConfig() {
Properties props = new Properties();
return new DistributionConfigImpl(props);
}
public final AdminDistributedSystem getDistributedSystem() {
return this.system;
}
public final InternalDistributedMember getInternalId() {
return internalId;
}
public final String getId() {
return this.id;
}
public final String getName() {
return this.name;
}
public String getHost() {
return this.host;
}
public final InetAddress getHostAddress() {
return InetAddressUtil.toInetAddress(this.getHost());
}
// -------------------------------------------------------------------------
// Operations
// -------------------------------------------------------------------------
public final String getLog() {
String childTail = null;
String mainTail = null;
GemFireVM vm = getGemFireVM();
if (vm != null) {
String[] log = vm.getSystemLogs();
if (log != null && log.length > 0) mainTail = log[0];
if (log != null && log.length > 1) childTail = log[1];
}
if (childTail == null && mainTail == null) {
return LocalizedStrings.SystemMemberImpl_NO_LOG_FILE_CONFIGURED_LOG_MESSAGES_WILL_BE_DIRECTED_TO_STDOUT.toLocalizedString();
}
else {
StringBuffer result = new StringBuffer();
if (mainTail != null) {
result.append(mainTail);
}
if (childTail != null) {
result.append("\n" + LocalizedStrings.SystemMemberImpl_TAIL_OF_CHILD_LOG.toLocalizedString() + "\n");
result.append(childTail);
}
return result.toString();
}
}
public final String getVersion() {
GemFireVM vm = getGemFireVM();
if (vm == null) return null;
return vm.getVersionInfo();
}
public StatisticResource[] getStat(String statisticsTypeName)
throws com.gemstone.gemfire.admin.AdminException {
StatisticResource[] res = new StatisticResource[0];
if (this.vm != null) {
res = getStatsImpl(this.vm.getStats(statisticsTypeName));
}
return res.length==0 ? null : res;
}
public StatisticResource[] getStats()
throws com.gemstone.gemfire.admin.AdminException {
StatisticResource[] statsImpl = new StatisticResource[0];
if (this.vm != null) {
statsImpl = getStatsImpl(this.vm.getStats(null));
}
return statsImpl;
}
public final boolean hasCache() {
GemFireVM member = getGemFireVM();
if (member == null) {
return false;
} else {
return member.getCacheInfo() != null;
}
}
public final SystemMemberCache getCache()
throws com.gemstone.gemfire.admin.AdminException
{
GemFireVM vm = getGemFireVM(); // fix for bug 33505
if (vm == null) return null;
try {
return createSystemMemberCache(vm);
} catch (CancelException ex) {
return null;
} catch (CacheDoesNotExistException ex) {
return null;
}
}
public void refreshConfig()
throws com.gemstone.gemfire.admin.AdminException {
GemFireVM vm = getGemFireVM();
if (vm == null) return;
refreshConfig(vm.getConfig());
}
/**
* Sets the value of this system member's distribution-related
* configuration based on the given Config object.
*/
public final void refreshConfig(Config config)
throws com.gemstone.gemfire.admin.AdminException {
if (config == null) {
throw new AdminException(LocalizedStrings.SystemMemberImpl_FAILED_TO_REFRESH_CONFIGURATION_PARAMETERS_FOR_0.toLocalizedString(new Object[] {getId()}));
}
String[] names = config.getAttributeNames();
if (names == null || names.length < 1) {
throw new AdminException(LocalizedStrings.SystemMemberImpl_FAILED_TO_REFRESH_CONFIGURATION_PARAMETERS_FOR_0.toLocalizedString(new Object[] {getId()}));
}
for (int i = 0; i < names.length; i++) {
String name = names[i];
ConfigurationParameter parm = createConfigurationParameter(
name, // name
config.getAttributeDescription(name), // description
config.getAttributeObject(name), // value
config.getAttributeType(name), // valueType
config.isAttributeModifiable(name) ); // isModifiable
((ConfigurationParameterImpl) parm).addConfigurationParameterListener(this);
this.parms.put(name, parm);
}
}
public final ConfigurationParameter[] getConfiguration() {
ConfigurationParameter[] array =
new ConfigurationParameter[this.parms.size()];
this.parms.values().toArray(array);
return array;
}
public ConfigurationParameter[]
setConfiguration(ConfigurationParameter[] parms)
throws AdminException {
for (int i = 0; i < parms.length; i++) {
ConfigurationParameter parm = parms[i];
this.parms.put(parm.getName(), parm);
}
GemFireVM vm = getGemFireVM();
if (vm != null) {
// update internal vm's config...
Config config = vm.getConfig();
for (int i = 0; i < parms.length; i++) {
config.setAttributeObject(parms[i].getName(), parms[i].getValue(), ConfigSource.runtime());
}
vm.setConfig(config);
}
return this.getConfiguration();
}
public SystemMemberType getType() {
return SystemMemberType.APPLICATION;
}
// -------------------------------------------------------------------------
// Listener callbacks
// -------------------------------------------------------------------------
// -- com.gemstone.gemfire.admin.internal.ConfigurationParameterListener ---
public void configurationParameterValueChanged(ConfigurationParameter parm) {
LogWriterI18n logWriter = this.system.getLogWriter().convertToLogWriterI18n();
try {
setConfiguration(new ConfigurationParameter[] { parm });
} catch (com.gemstone.gemfire.admin.AdminException e) {
// this shouldn't occur since this is a config listener method...
logWriter.warning(e);
throw new RuntimeAdminException(e);
} catch (java.lang.Exception e) {
logWriter.warning(e);
// }
// catch (java.lang.RuntimeException e) {
// logWriter.warning(e);
// throw e;
// }
} catch (java.lang.Error e) {
if (SystemFailure.isJVMFailureError(e)) {
SystemFailure.initiateFailure(e);
// If this ever returns, rethrow the error. We're poisoned
// now, so don't let this thread continue.
throw e;
}
// Whenever you catch Error or Throwable, you must also
// check for fatal JVM error (see above). However, there is
// _still_ a possibility that you are dealing with a cascading
// error condition, so you also need to check to see if the JVM
// is still usable:
SystemFailure.checkFailure();
logWriter.error(e);
throw e;
}
}
// -------------------------------------------------------------------------
// Overridden method(s) from java.lang.Object
// -------------------------------------------------------------------------
@Override
public String toString() {
return getName();
}
// -------------------------------------------------------------------------
// Template methods with default behavior impl'ed. Override if needed.
// -------------------------------------------------------------------------
/**
* Returns the GemFireVM that underlies this
* SystemMember.
*/
protected final GemFireVM getGemFireVM() {
return this.vm;
}
/**
* Sets the GemFireVM that underlies this
* SystemMember. This method is used when a member,
* such as a cache server, is started by the admin API.
*/
void setGemFireVM(GemFireVM vm) throws AdminException {
this.vm = vm;
if (vm != null) {
this.internalId = vm.getId();
this.id = this.internalId.toString();
this.name = vm.getName();
this.host = InetAddressUtil.toString(vm.getHost());
} else {
this.internalId = null;
this.id = null;
// leave this.name set to what it is (how come?)
this.host = this.getHost();
}
if (DistributionConfig.DEFAULT_NAME.equals(this.name)) {
// Fix bug 32877
this.name = this.id;
}
if (vm != null) {
this.refreshConfig();
}
}
/**
* Updates this SystemMember instance using the corresponding
* InternalDistributedMember
*
* @param member
* InternalDistributedMember instance to update this SystemMember
*
* @since 6.5
*/
private void updateByInternalDistributedMember(
InternalDistributedMember member) {
if (member != null) {
this.internalId = member;
this.id = this.internalId.toString();
this.host = this.internalId.getHost();
this.name = this.internalId.getName();
if (this.name == null ||
DistributionConfig.DEFAULT_NAME.equals(this.name)) {
/*
* name could be null & referring to description of a fix for 32877
*/
this.name = this.id;
}
}
}
/**
* Template method for creating {@link StatisticResource}.
*
* @param stat the internal stat resource to wrap with {@link StatisticResource}
* @return new impl instance of {@link StatisticResource}
*/
protected StatisticResource createStatisticResource(StatResource stat)
throws com.gemstone.gemfire.admin.AdminException {
return new StatisticResourceImpl(stat, this);
}
/**
* Template method for creating {@link ConfigurationParameter}.
*
* @param name the name of this parameter which cannot change
* @param description full description to use
* @param value the value of this parameter
* @param type the class type of the value
* @param userModifiable true if this is modifiable; false if read-only
* @return new impl instance of {@link ConfigurationParameter}
*/
protected ConfigurationParameter createConfigurationParameter(String name,
String description,
Object value,
Class type,
boolean userModifiable) {
return new ConfigurationParameterImpl(
name, description, value, type, userModifiable);
}
/**
* Template method for creating {@link SystemMemberCache}.
*
* @param vm the GemFire vm to retrieve cache info from
* @return new impl instance of {@link SystemMemberCache}
*/
protected SystemMemberCache createSystemMemberCache(GemFireVM vm)
throws com.gemstone.gemfire.admin.AdminException
{
return new SystemMemberCacheImpl(vm);
}
/** Wrap the internal stats with impls of {@link StatisticResource} */
protected StatisticResource[] getStatsImpl(StatResource[] stats)
throws com.gemstone.gemfire.admin.AdminException {
List statList = new ArrayList();
for (int i = 0; i < stats.length; i++) {
statList.add(createStatisticResource(stats[i]));
}
return (StatisticResource[]) statList.toArray(new StatisticResource[0]);
}
public String[] getRoles() {
Set roles = this.internalId.getRoles();
String[] roleNames = new String[roles.size()];
Iterator iter = roles.iterator();
for (int i = 0; i < roleNames.length; i++) {
Role role = (Role) iter.next();
roleNames[i] = role.getName();
}
return roleNames;
}
public DistributedMember getDistributedMember() {
return this.internalId;
}
}
