@ManagedOperation(
description =
"Sends a STABLE message to all senders. This causes message purging and potential"
+ " retransmissions from senders")
public void sendStableMessages() {
for (Map.Entry<Address, ReceiverEntry> entry : recv_table.entrySet()) {
Address dest = entry.getKey();
ReceiverEntry val = entry.getValue();
NakReceiverWindow win = val != null ? val.received_msgs : null;
if (win != null) {
long[] tmp = win.getDigest();
long low = tmp[0], high = tmp[1];
if (val.last_highest == high) {
if (val.num_stable_msgs >= val.max_stable_msgs) {
continue;
} else val.num_stable_msgs++;
} else {
val.last_highest = high;
val.num_stable_msgs = 1;
}
sendStableMessage(dest, val.recv_conn_id, low, high);
}
}
}
@ManagedOperation
public String printConnections() {
StringBuilder sb = new StringBuilder();
if (!send_table.isEmpty()) {
sb.append("send connections:\n");
for (Map.Entry<Address, SenderEntry> entry : send_table.entrySet()) {
sb.append(entry.getKey()).append(": ").append(entry.getValue()).append("\n");
}
}
if (!recv_table.isEmpty()) {
sb.append("\nreceive connections:\n");
for (Map.Entry<Address, ReceiverEntry> entry : recv_table.entrySet()) {
sb.append(entry.getKey()).append(": ").append(entry.getValue()).append("\n");
}
}
return sb.toString();
}
@ManagedOperation(description = "Prints the contents of the send windows for all members")
public String printSendWindowMessages() {
StringBuilder ret = new StringBuilder(local_addr + ":\n");
for (Map.Entry<Address, SenderEntry> entry : send_table.entrySet()) {
Address addr = entry.getKey();
Table<Message> buf = entry.getValue().sent_msgs;
ret.append(addr).append(": ").append(buf.toString()).append('\n');
}
return ret.toString();
}
public void run() {
for (Map.Entry<Address, ReceiverEntry> entry : recv_table.entrySet()) {
Address target = entry.getKey(); // target to send retransmit requests to
ReceiverEntry val = entry.getValue();
Table<Message> buf = val != null ? val.received_msgs : null;
if (buf != null && buf.getNumMissing() > 0) {
SeqnoList missing = buf.getMissing();
if (missing != null) retransmit(missing, target);
}
}
}
@ManagedOperation(description = "Returns the sizes of all NakReceiverWindow.RetransmitTables")
public String printRetransmitTableSizes() {
StringBuilder sb = new StringBuilder();
for (Map.Entry<Address, ReceiverEntry> entry : recv_table.entrySet()) {
NakReceiverWindow win = entry.getValue().received_msgs;
sb.append(entry.getKey() + ": ")
.append(win.getRetransmitTableSize())
.append(" (capacity=" + win.getRetransmitTableCapacity())
.append(", fill factor=" + win.getRetransmitTableFillFactor() + "%)\n");
}
return sb.toString();
}
@ManagedOperation(
description = "Closes connections that have been idle for more than conn_expiry_timeout ms")
public void reapIdleConnections() {
if (conn_expiry_timeout <= 0) return;
// remove expired connections from send_table
for (Map.Entry<Address, SenderEntry> entry : send_table.entrySet()) {
SenderEntry val = entry.getValue();
long age = val.age();
if (age >= conn_expiry_timeout) {
removeSendConnection(entry.getKey());
if (log.isDebugEnabled())
log.debug(
local_addr
+ ": removed expired connection for "
+ entry.getKey()
+ " ("
+ age
+ " ms old) from send_table");
}
}
// remove expired connections from recv_table
for (Map.Entry<Address, ReceiverEntry> entry : recv_table.entrySet()) {
ReceiverEntry val = entry.getValue();
long age = val.age();
if (age >= conn_expiry_timeout) {
removeReceiveConnection(entry.getKey());
if (log.isDebugEnabled())
log.debug(
local_addr
+ ": removed expired connection for "
+ entry.getKey()
+ " ("
+ age
+ " ms old) from recv_table");
}
}
}
String dumpMessages(HashMap map) {
StringBuffer sb = new StringBuffer();
Map.Entry entry;
List l;
if (map != null) {
synchronized (map) {
for (Iterator it = map.entrySet().iterator(); it.hasNext(); ) {
entry = (Map.Entry) it.next();
l = (List) entry.getValue();
sb.append(entry.getKey()).append(": ");
sb.append(l.size()).append(" msgs\n");
}
}
}
return sb.toString();
}
void bundleAndSend() {
Map.Entry entry;
IpAddress dest;
ObjectOutputStream out;
InetAddress addr;
int port;
byte[] data;
List l;
if (Trace.trace) {
Trace.info(
"UDP.BundlingOutgoingPacketHandler.bundleAndSend()",
"\nsending msgs:\n" + dumpMessages(msgs));
}
synchronized (msgs) {
stopTimer();
if (msgs.size() == 0) {
return;
}
for (Iterator it = msgs.entrySet().iterator(); it.hasNext(); ) {
entry = (Map.Entry) it.next();
dest = (IpAddress) entry.getKey();
addr = dest.getIpAddress();
port = dest.getPort();
l = (List) entry.getValue();
try {
out_stream.reset();
// BufferedOutputStream bos=new BufferedOutputStream(out_stream);
out_stream.write(Version.version_id, 0, Version.version_id.length); // write the version
// bos.write(Version.version_id, 0, Version.version_id.length); // write the version
out = new ObjectOutputStream(out_stream);
// out=new ObjectOutputStream(bos);
l.writeExternal(out);
out.close(); // needed if out buffers its output to out_stream
data = out_stream.toByteArray();
doSend(data, addr, port);
} catch (IOException e) {
Trace.error(
"UDP.BundlingOutgoingPacketHandle.bundleAndSend()",
"exception sending msg (to dest=" + dest + "): " + e);
}
}
msgs.clear();
}
}
protected void handleJmx(Map<String, String> map, String input) {
Map<String, Object> tmp_stats;
int index = input.indexOf("=");
if (index > -1) {
List<String> list = null;
String protocol_name = input.substring(index + 1);
index = protocol_name.indexOf(".");
if (index > -1) {
String rest = protocol_name;
protocol_name = protocol_name.substring(0, index);
String attrs = rest.substring(index + 1); // e.g. "num_sent,msgs,num_received_msgs"
list = Util.parseStringList(attrs, ",");
// check if there are any attribute-sets in the list
for (Iterator<String> it = list.iterator(); it.hasNext(); ) {
String tmp = it.next();
index = tmp.indexOf("=");
if (index != -1) {
String attrname = tmp.substring(0, index);
String attrvalue = tmp.substring(index + 1);
Protocol prot = prot_stack.findProtocol(protocol_name);
Field field = prot != null ? Util.getField(prot.getClass(), attrname) : null;
if (field != null) {
Object value = MethodCall.convert(attrvalue, field.getType());
if (value != null) prot.setValue(attrname, value);
} else {
// try to find a setter for X, e.g. x(type-of-x) or setX(type-of-x)
ResourceDMBean.Accessor setter =
ResourceDMBean.findSetter(
prot, attrname); // Util.getSetter(prot.getClass(), attrname);
if (setter != null) {
try {
Class<?> type =
setter instanceof ResourceDMBean.FieldAccessor
? ((ResourceDMBean.FieldAccessor) setter).getField().getType()
: setter instanceof ResourceDMBean.MethodAccessor
? ((ResourceDMBean.MethodAccessor) setter)
.getMethod()
.getParameterTypes()[0]
.getClass()
: null;
Object converted_value = MethodCall.convert(attrvalue, type);
setter.invoke(converted_value);
} catch (Exception e) {
log.error("unable to invoke %s() on %s: %s", setter, protocol_name, e);
}
} else log.warn(Util.getMessage("FieldNotFound"), attrname, protocol_name);
}
it.remove();
}
}
}
tmp_stats = dumpStats(protocol_name, list);
if (tmp_stats != null) {
for (Map.Entry<String, Object> entry : tmp_stats.entrySet()) {
Map<String, Object> tmp_map = (Map<String, Object>) entry.getValue();
String key = entry.getKey();
map.put(key, tmp_map != null ? tmp_map.toString() : null);
}
}
} else {
tmp_stats = dumpStats();
if (tmp_stats != null) {
for (Map.Entry<String, Object> entry : tmp_stats.entrySet()) {
Map<String, Object> tmp_map = (Map<String, Object>) entry.getValue();
String key = entry.getKey();
map.put(key, tmp_map != null ? tmp_map.toString() : null);
}
}
}
}