/**
* A non-null file name indicates that recording be enabled. The file must also be present and
* have the appropriate permissions.
*
* @param file
*/
public void record(final File file) {
if (file == null) {
majorLogger.info("no recorder file specified");
return;
}
if (file.exists()) {
majorLogger.warn("the recorder file is being overwritten", file);
if (!file.canWrite()) {
majorLogger.warn("the recorder file path provided is not writable: {}", file);
return;
}
}
final SyntheticData.Recorder old = this.recorder.getAndSet(new SyntheticData.Recorder(file));
if (old != null) {
old.stopRecording();
}
}
/**
* Send the data to all channels except the incoming channel.
*
* <p>Write the message to the recorder file for later study and playback. This involves
* converting the binary payload to a textual representation.
*
* <p>If the inbound message is an INTEREST message then it is not sent. Instead it is responded
* to in a way indicated by the ?.
*
* @param sourceCtx
* @param originalMsg
*/
public void distribute(ChannelHandlerContext sourceCtx, final MetaLinkMsg.Edit originalMsg) {
majorLogger.trace(
"incoming message to distribute(): {}\n {}",
sourceCtx.channel().remoteAddress(),
originalMsg);
if (originalMsg == null) {
majorLogger.warn("attempt to distribute null message");
return;
}
try {
final SyntheticData.Recorder recorder = this.recorder.get();
final MetaLinkMsg.Edit.Builder editBuilder = originalMsg.toBuilder();
final MetaLinkMsg.Edit msg;
if (originalMsg.getModeCount() < 1) {
if (originalMsg.hasEditMode()) {
editBuilder.addMode(originalMsg.getEditMode());
msg = editBuilder.build();
} else {
majorLogger.warn("no edit mode provided, assuming POST");
editBuilder.addMode(MetaLinkMsg.Edit.EditMode.POST);
editBuilder.setEditMode(MetaLinkMsg.Edit.EditMode.POST);
msg = editBuilder.build();
}
} else {
if (originalMsg.hasEditMode()) {
if (originalMsg.getEditMode() == originalMsg.getMode(originalMsg.getModeCount() - 1)) {
msg = editBuilder.build();
} else {
majorLogger.info("edit mode mismatch, set the last mode");
editBuilder.addMode(originalMsg.getEditMode());
msg = editBuilder.build();
}
} else {
majorLogger.info("edit mode provided, using the last mode");
editBuilder.setEditMode(originalMsg.getMode(originalMsg.getModeCount() - 1));
msg = editBuilder.build();
}
}
if (null != recorder) {
recorder.record(sourceCtx, msg);
}
final String trackingGuid =
msg.hasGuid() ? msg.getGuid().toString() : UUID.randomUUID().toString();
final String origin = (msg.getOriginCount() > 0) ? msg.getOrigin(0) : "";
switch (msg.getEditMode()) {
case NOTICE:
{
final Interest topic = new Interest(msg.getTopicList());
final Interest.InterestedChannelSet channelSet = this.interestedChannelMap.get(topic);
if (channelSet == null) {
majorLogger.warn("no interested channel set");
editBuilder
.addMode(MetaLinkMsg.Edit.EditMode.NOTICE)
.setEditMode(MetaLinkMsg.Edit.EditMode.NOTICE)
.addOrigin(METALINK_BRIDGE_NAME)
.setSequence(sequenceNumber.incrementAndGet());
final MetaLinkMsg.Notice.Builder noticeBuilder =
MetaLinkMsg.Notice.newBuilder()
.setNoticeMode(MetaLinkMsg.Notice.NoticeMode.ACK)
.setCode(NO_INTEREST_PRESENT)
.setMsg("no interest in topic")
.setId(msg.getGuid());
editBuilder.addNotices(noticeBuilder);
final MetaLinkMsg.Edit updatedEdit = editBuilder.build();
majorLogger.trace(
"notice no-interest notice {} to {}",
trackingGuid,
sourceCtx.channel().remoteAddress());
sourceCtx.write(updatedEdit);
sourceCtx.flush();
detailLogger.info("update edit\n{}", updatedEdit);
if (null != recorder) {
recorder.record(sourceCtx, updatedEdit);
}
break;
}
majorLogger.trace("posting notice to all interested channels except source");
boolean anyInterest = false;
for (final ChannelHandlerContext ctx : channelSet.getContextSet()) {
if (isSameChannel(ctx, sourceCtx)) {
continue;
}
anyInterest = true;
majorLogger.trace(
"notice forward {} to {}", trackingGuid, ctx.channel().remoteAddress());
ctx.write(msg);
ctx.flush();
detailLogger.info("message sent:\n{}", msg);
}
if (!anyInterest) {
editBuilder
.addMode(MetaLinkMsg.Edit.EditMode.NOTICE)
.setEditMode(MetaLinkMsg.Edit.EditMode.NOTICE)
.addOrigin(METALINK_BRIDGE_NAME)
.setSequence(sequenceNumber.incrementAndGet());
final MetaLinkMsg.Notice.Builder noticeBuilder =
MetaLinkMsg.Notice.newBuilder()
.setNoticeMode(MetaLinkMsg.Notice.NoticeMode.ACK)
.setCode(NO_INTEREST_PRESENT)
.setMsg("no pending interest for topic")
.setId(msg.getGuid());
editBuilder.addNotices(noticeBuilder);
final MetaLinkMsg.Edit updatedEdit = editBuilder.build();
majorLogger.trace(
"notice no interest {} to {}", trackingGuid, sourceCtx.channel().remoteAddress());
sourceCtx.write(updatedEdit);
sourceCtx.flush();
detailLogger.info("message sent:\n{}", updatedEdit);
majorLogger.trace("cannot post, no other interest \n{}", updatedEdit);
if (null != recorder) {
recorder.record(sourceCtx, updatedEdit);
}
}
break;
}
case POST:
{
final Interest topic = new Interest(msg.getTopicList());
final Interest.InterestedChannelSet channelSet = this.interestedChannelMap.get(topic);
if (channelSet == null || channelSet.size() == 0) {
majorLogger.warn("no interested channel set");
editBuilder
.addMode(MetaLinkMsg.Edit.EditMode.NOTICE)
.setEditMode(MetaLinkMsg.Edit.EditMode.NOTICE)
.addOrigin(METALINK_BRIDGE_NAME)
.setSequence(sequenceNumber.incrementAndGet());
final MetaLinkMsg.Notice.Builder noticeBuilder =
MetaLinkMsg.Notice.newBuilder()
.setNoticeMode(MetaLinkMsg.Notice.NoticeMode.ACK)
.setCode(NO_INTEREST_PRESENT)
.setMsg("no interest in the posted topic")
.setId(msg.getGuid());
editBuilder.addNotices(noticeBuilder);
final MetaLinkMsg.Edit updatedEdit = editBuilder.build();
majorLogger.trace(
"post no-interest {} to {}", trackingGuid, sourceCtx.channel().remoteAddress());
sourceCtx.write(updatedEdit);
sourceCtx.flush();
detailLogger.info("message sent:\n{}", updatedEdit);
if (null != recorder) {
recorder.record(sourceCtx, updatedEdit);
}
break;
} else {
majorLogger.trace("posting edit to all interested channels except source");
for (final ChannelHandlerContext ctx : channelSet.getContextSet()) {
if (isSameChannel(ctx, sourceCtx)) {
continue;
}
majorLogger.trace("post all {} to {}", trackingGuid, ctx.channel().remoteAddress());
ctx.write(msg);
ctx.flush();
detailLogger.info("message sent:\n{}", msg);
}
}
/*
if (! anyInterest) {
editBuilder
.addMode(MetaLinkMsg.Edit.EditMode.NOTICE)
.setEditMode(MetaLinkMsg.Edit.EditMode.NOTICE)
.addOrigin(METALINK_BRIDGE_NAME)
.setSequence(sequenceNumber.incrementAndGet());
final MetaLinkMsg.Notice.Builder noticeBuilder = MetaLinkMsg.Notice.newBuilder()
.setNoticeMode(MetaLinkMsg.Notice.NoticeMode.ACK)
.setCode(NO_INTEREST_PRESENT)
.setMsg("no pending interest for topic")
.setId(msg.getGuid());
editBuilder.addNotices(noticeBuilder);
final MetaLinkMsg.Edit updatedEdit = editBuilder.build();
majorLogger.trace("post no interest {} to {}",
trackingGuid, sourceCtx.channel().remoteAddress());
sourceCtx.write(updatedEdit);
sourceCtx.flush();
detailLogger.info("message sent:\n{}", updatedEdit);
majorLogger.trace("cannot post, no other interest \n{}", updatedEdit);
if (null != recorder) {
recorder.record(sourceCtx, updatedEdit);
}
}
*/
break;
}
case INTEREST:
{
final Interest interest = new Interest(msg.getTopicList());
playback(sourceCtx, interest);
majorLogger.trace("determine if there is a client which already is interested?");
final Interest.InterestedChannelSet ics = this.interestedChannelMap.get(interest);
boolean anyInterest = false;
if (ics != null) {
for (final ChannelHandlerContext ctx : ics.getContextSet()) {
if (isSameChannel(ctx, sourceCtx)) {
continue;
}
anyInterest = true;
majorLogger.trace(
"interest in {} from {} to {}",
trackingGuid,
ctx.channel().remoteAddress(),
sourceCtx.channel().remoteAddress());
sourceCtx.write(msg);
sourceCtx.flush();
detailLogger.info("message sent:\n{}", msg);
}
}
if (!anyInterest) {
editBuilder
.addMode(MetaLinkMsg.Edit.EditMode.NOTICE)
.setEditMode(MetaLinkMsg.Edit.EditMode.NOTICE)
.addOrigin(METALINK_BRIDGE_NAME)
.setSequence(sequenceNumber.incrementAndGet());
final MetaLinkMsg.Notice.Builder noticeBuilder =
MetaLinkMsg.Notice.newBuilder()
.setNoticeMode(MetaLinkMsg.Notice.NoticeMode.ACK)
.setCode(NO_INTEREST_PRESENT)
.setMsg("no pending interest for topic")
.setId(msg.getGuid());
editBuilder.addNotices(noticeBuilder);
final MetaLinkMsg.Edit updatedEdit = editBuilder.build();
majorLogger.trace(
"interest notice {} to {}", trackingGuid, sourceCtx.channel().remoteAddress());
sourceCtx.write(updatedEdit);
sourceCtx.flush();
detailLogger.info("message sent:\n{}", updatedEdit);
majorLogger.trace("no other interest");
if (null != recorder) {
recorder.record(sourceCtx, updatedEdit);
}
}
setInterest(sourceCtx, interest);
majorLogger.trace("interest recorded");
majorLogger.trace("expressing interest to all channels except source");
for (final Map.Entry<SocketAddress, Interest.ChannelInterestSet> entry :
this.channelInterestMap.entrySet()) {
final ChannelHandlerContext ctx = entry.getValue().context;
if (isSameChannel(ctx, sourceCtx)) {
continue;
}
majorLogger.trace("interest {} to {}", trackingGuid, ctx.channel().remoteAddress());
ctx.write(msg);
ctx.flush();
detailLogger.info("message sent:\n{}", msg);
}
break;
}
case DISINTEREST:
{
final Interest interest = new Interest(msg.getTopicList());
majorLogger.trace("expressing disinterest to all channels except source");
for (final Map.Entry<SocketAddress, Interest.ChannelInterestSet> entry :
this.channelInterestMap.entrySet()) {
final ChannelHandlerContext ctx = entry.getValue().context;
if (isSameChannel(ctx, sourceCtx)) {
continue;
}
majorLogger.trace(
"disinterest {} to {}", trackingGuid, ctx.channel().remoteAddress());
ctx.write(msg);
ctx.flush();
detailLogger.info("message sent:\n{}", msg);
}
setDisinterest(sourceCtx, interest);
}
}
} catch (Exception ex) {
majorLogger.warn("problem distributing message", ex);
}
majorLogger.info("MESSAGE PROCESSED");
}