Message state_req=new Message(target).putHeader(this.id, new StateHeader(StateHeader.STATE_REQ)) .setFlag(Message.Flag.DONT_BUNDLE, Message.Flag.OOB, Message.Flag.SKIP_BARRIER); log.debug("%s: asking %s for state", local_addr, target);
protected void getStateFromApplication(Address requester, Digest digest) { StateTransferInfo rsp=(StateTransferInfo)up_prot.up(new Event(Event.GET_APPLSTATE)); byte[] state=rsp.state; if(stats) { num_state_reqs.increment(); if(state != null) num_bytes_sent.add(state.length); avg_state_size=num_bytes_sent.doubleValue() / num_state_reqs.doubleValue(); } Message state_rsp=new Message(requester, state).putHeader(this.id, new StateHeader(StateHeader.STATE_RSP, digest)); log.trace("%s: sending state to %s (size=%s)", local_addr, state_rsp.getDest(), Util.printBytes(state != null? state.length : 0)); down_prot.down(state_rsp); }
private void handleViewChange(View v) { Address old_coord; Vector new_members=v.getMembers(); boolean send_up_null_state_rsp=false; synchronized(members) { old_coord=(Address)(!members.isEmpty()? members.firstElement() : null); members.clear(); members.addAll(new_members); // this handles the case where a coord dies during a state transfer; prevents clients from hanging forever // Note this only takes a coordinator crash into account, a getState(target, timeout), where target is not // null is not handled ! (Usually we get the state from the coordinator) // http://jira.jboss.com/jira/browse/JGRP-148 if(waiting_for_state_response && old_coord != null && !members.contains(old_coord)) { send_up_null_state_rsp=true; } } if(send_up_null_state_rsp) { if(log.isWarnEnabled()) log.warn("discovered that the state provider (" + old_coord + ") crashed; will return null state to application"); StateHeader hdr=new StateHeader(StateHeader.STATE_RSP, local_addr, 0, null, null); handleStateRsp(hdr, null); // sends up null GET_STATE_OK } }
state_req.putHeader(name, new StateHeader(StateHeader.STATE_REQ, local_addr, state_id++, null, info.state_id)); if(log.isDebugEnabled()) log.debug("GET_STATE: asking " + target + " for state");
requester=(Address)it.next(); Message state_rsp=new Message(requester, null, state); StateHeader hdr=new StateHeader(StateHeader.STATE_RSP, local_addr, 0, digest, id); state_rsp.putHeader(name, hdr); responses.add(state_rsp);
Message state_req=new Message(target).putHeader(this.id, new StateHeader(StateHeader.STATE_REQ)) .setFlag(Message.Flag.DONT_BUNDLE, Message.Flag.OOB, Message.Flag.SKIP_BARRIER); log.debug("%s: asking %s for state", local_addr, target);
protected void getStateFromApplication(Address requester, Digest digest) { StateTransferInfo rsp=(StateTransferInfo)up_prot.up(new Event(Event.GET_APPLSTATE)); byte[] state=rsp.state; if(stats) { num_state_reqs.increment(); if(state != null) num_bytes_sent.add(state.length); avg_state_size=num_bytes_sent.doubleValue() / num_state_reqs.doubleValue(); } Message state_rsp=new Message(requester, state).putHeader(this.id, new StateHeader(StateHeader.STATE_RSP, digest)); log.trace("%s: sending state to %s (size=%s)", local_addr, state_rsp.getDest(), Util.printBytes(state != null? state.length : 0)); down_prot.down(state_rsp); }
protected void sendException(Address requester, Throwable exception) { try { Message ex_msg=new Message(requester).setBuffer(Util.exceptionToBuffer(exception)) .putHeader(getId(), new StateHeader(StateHeader.STATE_EX)); down(ex_msg); } catch(Throwable t) { log.error("%s: failed sending exception %s to %s", local_addr, exception, requester); } }
protected void sendException(Address requester, Throwable exception) { try { Message ex_msg=new Message(requester).setBuffer(Util.exceptionToBuffer(exception)) .putHeader(getId(), new StateHeader(StateHeader.STATE_EX)); down(ex_msg); } catch(Throwable t) { log.error("%s: failed sending exception %s to %s", local_addr, exception, requester); } }