org.jgroups.conf.PropertyConverters Maven / Gradle / Ivy
package org.jgroups.conf;
import org.jgroups.Global;
import org.jgroups.View;
import org.jgroups.stack.Configurator;
import org.jgroups.stack.IpAddress;
import org.jgroups.stack.Protocol;
import org.jgroups.util.StackType;
import org.jgroups.util.Util;
import java.lang.reflect.Field;
import java.net.*;
import java.util.*;
import java.util.Map.Entry;
import java.util.concurrent.Callable;
import java.util.function.Supplier;
/**
* Groups a set of standard PropertyConverter(s) supplied by JGroups.
*
*
* Third parties can provide their own converters if such need arises by implementing
* {@link PropertyConverter} interface and by specifying that converter as converter on a specific
* Property annotation of a field or a method instance.
*
* @author Vladimir Blagojevic
*/
public final class PropertyConverters {
private PropertyConverters() {
throw new InstantiationError( "Must not instantiate this class" );
}
public static class NetworkInterfaceList implements PropertyConverter {
public Object convert(Object obj, Class propertyFieldType, String propertyName, String propertyValue, boolean check_scope) throws Exception {
return Util.parseInterfaceList(propertyValue);
}
public String toString(Object value) {
List list=(List)value;
return Util.print(list);
}
}
public static class FlushInvoker implements PropertyConverter {
public Object convert(Object obj, Class propertyFieldType, String propertyName, String propertyValue, boolean check_scope) throws Exception {
if (propertyValue == null) {
return null;
} else {
Class> invoker = (Class>) Class.forName(propertyValue);
invoker.getDeclaredConstructor(View.class);
return invoker;
}
}
public String toString(Object value) {
return value.getClass().getName();
}
}
public static class InitialHosts implements PropertyConverter {
public Object convert(Object obj, Class propertyFieldType, String propertyName, String prop_val, boolean check_scope) throws Exception {
if(prop_val == null)
return null;
int port_range = getPortRange((Protocol)obj) ;
return Util.parseCommaDelimitedHosts(prop_val, port_range);
}
public String toString(Object value) {
if(value instanceof Collection) {
StringBuilder sb=new StringBuilder();
Collection list=(Collection)value;
boolean first=true;
for(IpAddress addr: list) {
if(first)
first=false;
else
sb.append(",");
sb.append(addr.getIpAddress().getHostAddress()).append("[").append(addr.getPort()).append("]");
}
return sb.toString();
}
else
return value.getClass().getName();
}
private static int getPortRange(Protocol protocol) throws Exception {
Field f = Util.getField(protocol.getClass(), "port_range");
return (Integer)Util.getField(f, protocol);
}
}
public static class InitialHosts2 implements PropertyConverter {
public Object convert(Object obj, Class propertyFieldType, String propertyName, String prop_val, boolean check_scope) throws Exception {
// port range is 1
return Util.parseCommaDelimitedHosts2(prop_val, 1);
}
public String toString(Object value) {
if(value instanceof Collection) {
StringBuilder sb=new StringBuilder();
Collection list=(Collection)value;
boolean first=true;
for(InetSocketAddress addr: list) {
if(first)
first=false;
else
sb.append(",");
sb.append(addr.getAddress().getHostAddress()).append("[").append(addr.getPort()).append("]");
}
return sb.toString();
}
else
return value.getClass().getName();
}
}
public static class BindInterface implements PropertyConverter {
public Object convert(Object obj, Class propertyFieldType, String propertyName, String propertyValue, boolean check_scope) throws Exception {
// get the existing bind address - possibly null
InetAddress old_bind_addr = (InetAddress)Configurator.getValueFromProtocol((Protocol)obj, "bind_addr");
// apply a bind interface constraint
InetAddress new_bind_addr = Util.validateBindAddressFromInterface(old_bind_addr, propertyValue);
if (new_bind_addr != null)
setBindAddress((Protocol)obj, new_bind_addr) ;
// if no bind_interface specified, set it to the empty string to avoid exception
// from @Property processing
if (propertyValue != null)
return propertyValue ;
else
return "" ;
}
private static void setBindAddress(Protocol protocol, InetAddress bind_addr) throws Exception {
Field f=Util.getField(protocol.getClass(), "bind_addr");
Util.setField(f, protocol, bind_addr) ;
}
// return a String version of the converted value
public String toString(Object value) {
return (String) value ;
}
}
/*public static class IntegerArray implements PropertyConverter {
public Object convert(Object obj, Class propertyFieldType, String propertyName, String propertyValue, boolean check_scope) throws Exception {
int[] tmp=Util.parseCommaDelimitedInts(propertyValue);
if(tmp != null && tmp.length > 0){
return tmp;
}
else
return null;
}
public String toString(Object value) {
if(value == null)
return null;
int[] val=(int[])value;
StringBuilder sb=new StringBuilder();
boolean first=true;
for(int l: val) {
if(first)
first=false;
else
sb.append(",");
sb.append(l);
}
return sb.toString();
}
}*/
public static class LongArray implements PropertyConverter {
public Object convert(Object obj, Class propertyFieldType, String propertyName, String propertyValue, boolean check_scope) throws Exception {
long tmp [] = Util.parseCommaDelimitedLongs(propertyValue);
if(tmp != null && tmp.length > 0){
return tmp;
}else{
// throw new Exception ("Invalid long array specified in " + propertyValue);
return null;
}
}
public String toString(Object value) {
if(value == null)
return null;
long[] val=(long[])value;
StringBuilder sb=new StringBuilder();
boolean first=true;
for(long l: val) {
if(first)
first=false;
else
sb.append(",");
sb.append(l);
}
return sb.toString();
}
}
public static class StringProperties implements PropertyConverter {
@Override
public Object convert(Object obj, Class propertyFieldType, String propertyName, String propertyValue, boolean check_scope) throws Exception {
return Util.parseCommaDelimitedProps(propertyValue);
}
@Override
public String toString(Object value) {
if (value == null)
return null;
Map v = (Map) value;
StringBuilder sb = new StringBuilder();
boolean first = true;
for(Entry entry : v.entrySet()) {
if (!first)
sb.append(",");
else
first = false;
sb.append(entry.getKey()).append("=").append(entry.getValue());
}
return sb.toString();
}
}
public static class Default implements PropertyConverter {
static final String prefix;
static {
String tmp="FF0e::";
try {
tmp=System.getProperty(Global.IPV6_MCAST_PREFIX);
}
catch(Throwable t) {
tmp="FF0e::";
}
prefix=tmp != null? tmp : "FF0e::";
}
public Object convert(Object obj, Class propertyFieldType, String propertyName, String propertyValue, boolean check_scope) throws Exception {
if(propertyValue == null)
throw new NullPointerException("Property value cannot be null");
if(Boolean.TYPE.equals(propertyFieldType)) {
return Boolean.parseBoolean(propertyValue);
} else if (Integer.TYPE.equals(propertyFieldType)) {
return Util.readBytesInteger(propertyValue);
} else if (Long.TYPE.equals(propertyFieldType)) {
return Util.readBytesLong(propertyValue);
} else if (Byte.TYPE.equals(propertyFieldType)) {
return Byte.parseByte(propertyValue);
} else if (Double.TYPE.equals(propertyFieldType)) {
return Util.readBytesDouble(propertyValue);
} else if (Short.TYPE.equals(propertyFieldType)) {
return Short.parseShort(propertyValue);
} else if (Float.TYPE.equals(propertyFieldType)) {
return Float.parseFloat(propertyValue);
} else if(InetAddress.class.equals(propertyFieldType)) {
InetAddress retval=null;
if(propertyValue.contains(",")) {
List addrs=Util.parseCommaDelimitedStrings(propertyValue);
for(String addr: addrs) {
try {
retval=convertBindAddress(addr);
if(retval != null)
break;
}
catch(Throwable ignored) {
}
}
if(retval == null)
throw new IllegalArgumentException(String.format("failed parsing attribute %s with value %s", propertyName, propertyValue));
}
else
retval=convertBindAddress(propertyValue);
if(check_scope && retval instanceof Inet6Address && retval.isLinkLocalAddress()) {
// check scope
Inet6Address addr=(Inet6Address)retval;
int scope=addr.getScopeId();
if(scope == 0) {
// fix scope
Inet6Address ret=getScopedInetAddress(addr);
if(ret != null)
retval=ret;
}
}
return retval;
}
return propertyValue;
}
protected static InetAddress convertBindAddress(String value) throws Exception {
InetAddress retval=null;
Util.AddressScope addr_scope=null;
try {
addr_scope=Util.AddressScope.valueOf(value.toUpperCase());
}
catch(Throwable ignored) {
}
if(addr_scope != null)
retval=Util.getAddress(addr_scope);
else {
if(value.startsWith("match"))
retval=Util.getAddressByPatternMatch(value);
else if(value.startsWith("custom:"))
retval=getAddressByCustomCode(value.substring("custom:".length()));
else
retval=InetAddress.getByName(value);
}
if(retval instanceof Inet4Address && retval.isMulticastAddress() && Util.getIpStackType() == StackType.IPv6) {
String tmp=prefix + value;
retval=InetAddress.getByName(tmp);
return retval;
}
return retval;
}
protected static InetAddress getAddressByCustomCode(String value) throws Exception {
Class> clazz=(Class>)Util.loadClass(value, (ClassLoader)null);
Supplier supplier=clazz.newInstance();
return supplier.get();
}
protected static Inet6Address getScopedInetAddress(Inet6Address addr) {
if(addr == null)
return null;
Enumeration en;
List retval=new ArrayList<>();
try {
en=NetworkInterface.getNetworkInterfaces();
while(en.hasMoreElements()) {
NetworkInterface intf=en.nextElement();
Enumeration addrs=intf.getInetAddresses();
while(addrs.hasMoreElements()) {
InetAddress address=addrs.nextElement();
if(address.isLinkLocalAddress() && address instanceof Inet6Address &&
address.equals(addr) && ((Inet6Address)address).getScopeId() != 0) {
retval.add(address);
}
}
}
if(retval.size() == 1) {
return (Inet6Address)retval.get(0);
}
else
return null;
}
catch(SocketException e) {
return null;
}
}
public String toString(Object value) {
if(value instanceof InetAddress)
return ((InetAddress)value).getHostAddress();
return value != null? value.toString() : null;
}
}
}