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-rw-r--r--qpid/cpp/src/qpid/ha/BrokerReplicator.cpp99
1 files changed, 63 insertions, 36 deletions
diff --git a/qpid/cpp/src/qpid/ha/BrokerReplicator.cpp b/qpid/cpp/src/qpid/ha/BrokerReplicator.cpp
index 609a3378ad..9d0043a827 100644
--- a/qpid/cpp/src/qpid/ha/BrokerReplicator.cpp
+++ b/qpid/cpp/src/qpid/ha/BrokerReplicator.cpp
@@ -19,6 +19,7 @@
*
*/
#include "BrokerReplicator.h"
+#include "HaBroker.h"
#include "QueueReplicator.h"
#include "qpid/broker/Broker.h"
#include "qpid/broker/Queue.h"
@@ -37,6 +38,7 @@
#include "qmf/org/apache/qpid/broker/EventQueueDelete.h"
#include "qmf/org/apache/qpid/broker/EventSubscribe.h"
#include <algorithm>
+#include <sstream>
namespace qpid {
namespace ha {
@@ -87,6 +89,7 @@ const string QUEUE("queue");
const string RHOST("rhost");
const string TYPE("type");
const string USER("user");
+const string HA_BROKER("habroker");
const string AGENT_IND_EVENT_ORG_APACHE_QPID_BROKER("agent.ind.event.org_apache_qpid_broker.#");
const string QMF2("qmf2");
@@ -100,6 +103,7 @@ const string _PACKAGE_NAME("_package_name");
const string _SCHEMA_ID("_schema_id");
const string OBJECT("OBJECT");
const string ORG_APACHE_QPID_BROKER("org.apache.qpid.broker");
+const string ORG_APACHE_QPID_HA("org.apache.qpid.ha");
const string QMF_DEFAULT_DIRECT("qmf.default.direct");
const string _QUERY_REQUEST("_query_request");
const string BROKER("broker");
@@ -113,36 +117,13 @@ template <class T> bool match(Variant::Map& schema) {
return T::match(schema[CLASS_NAME], schema[PACKAGE_NAME]);
}
-enum ReplicateLevel { RL_NONE=0, RL_CONFIGURATION, RL_ALL };
-const string S_NONE="none";
-const string S_CONFIGURATION="configuration";
-const string S_ALL="all";
-
-ReplicateLevel replicateLevel(const string& level) {
- if (level == S_NONE) return RL_NONE;
- if (level == S_CONFIGURATION) return RL_CONFIGURATION;
- if (level == S_ALL) return RL_ALL;
- throw Exception("Invalid value for "+QPID_REPLICATE+": "+level);
-}
-
-ReplicateLevel replicateLevel(const framing::FieldTable& f) {
- if (f.isSet(QPID_REPLICATE)) return replicateLevel(f.getAsString(QPID_REPLICATE));
- else return RL_NONE;
-}
-
-ReplicateLevel replicateLevel(const Variant::Map& m) {
- Variant::Map::const_iterator i = m.find(QPID_REPLICATE);
- if (i != m.end()) return replicateLevel(i->second.asString());
- else return RL_NONE;
-}
-
-void sendQuery(const string className, const string& queueName, SessionHandler& sessionHandler) {
+void sendQuery(const string& packageName, const string& className, const string& queueName, SessionHandler& sessionHandler) {
framing::AMQP_ServerProxy peer(sessionHandler.out);
Variant::Map request;
request[_WHAT] = OBJECT;
Variant::Map schema;
schema[_CLASS_NAME] = className;
- schema[_PACKAGE_NAME] = ORG_APACHE_QPID_BROKER;
+ schema[_PACKAGE_NAME] = packageName;
request[_SCHEMA_ID] = schema;
AMQFrame method((MessageTransferBody(ProtocolVersion(), QMF_DEFAULT_DIRECT, 0, 0)));
@@ -181,10 +162,33 @@ Variant::Map asMapVoid(const Variant& value) {
} // namespace
+
+ReplicateLevel BrokerReplicator::replicateLevel(const std::string& str) {
+ ReplicateLevel rl;
+ if (qpid::ha::replicateLevel(str, rl)) return rl;
+ else return haBroker.getSettings().replicateDefault;
+}
+
+ReplicateLevel BrokerReplicator::replicateLevel(const framing::FieldTable& f) {
+ if (f.isSet(QPID_REPLICATE))
+ return replicateLevel(f.getAsString(QPID_REPLICATE));
+ else
+ return haBroker.getSettings().replicateDefault;
+}
+
+ReplicateLevel BrokerReplicator::replicateLevel(const Variant::Map& m) {
+ Variant::Map::const_iterator i = m.find(QPID_REPLICATE);
+ if (i != m.end())
+ return replicateLevel(i->second.asString());
+ else
+ return haBroker.getSettings().replicateDefault;
+}
+
BrokerReplicator::~BrokerReplicator() {}
-BrokerReplicator::BrokerReplicator(const boost::shared_ptr<Link>& l)
- : Exchange(QPID_CONFIGURATION_REPLICATOR), broker(*l->getBroker()), link(l)
+BrokerReplicator::BrokerReplicator(HaBroker& hb, const boost::shared_ptr<Link>& l)
+ : Exchange(QPID_CONFIGURATION_REPLICATOR),
+ haBroker(hb), broker(hb.getBroker()), link(l)
{
QPID_LOG(info, "HA: Backup replicating from " <<
link->getTransport() << ":" << link->getHost() << ":" << link->getPort());
@@ -211,17 +215,21 @@ void BrokerReplicator::initializeBridge(Bridge& bridge, SessionHandler& sessionH
const qmf::org::apache::qpid::broker::ArgsLinkBridge& args(bridge.getArgs());
//declare and bind an event queue
- peer.getQueue().declare(queueName, "", false, false, true, true, FieldTable());
+ FieldTable declareArgs;
+ declareArgs.setString(QPID_REPLICATE, str(RL_NONE));
+ peer.getQueue().declare(queueName, "", false, false, true, true, declareArgs);
peer.getExchange().bind(queueName, QMF_DEFAULT_TOPIC, AGENT_IND_EVENT_ORG_APACHE_QPID_BROKER, FieldTable());
//subscribe to the queue
peer.getMessage().subscribe(queueName, args.i_dest, 1, 0, false, "", 0, FieldTable());
peer.getMessage().flow(args.i_dest, 0, 0xFFFFFFFF);
peer.getMessage().flow(args.i_dest, 1, 0xFFFFFFFF);
- //issue a query request for queues and another for exchanges using event queue as the reply-to address
- sendQuery(QUEUE, queueName, sessionHandler);
- sendQuery(EXCHANGE, queueName, sessionHandler);
- sendQuery(BINDING, queueName, sessionHandler);
+ // Issue a query request for queues, exchanges, bindings and the habroker
+ // using event queue as the reply-to address
+ sendQuery(ORG_APACHE_QPID_HA, HA_BROKER, queueName, sessionHandler);
+ sendQuery(ORG_APACHE_QPID_BROKER, QUEUE, queueName, sessionHandler);
+ sendQuery(ORG_APACHE_QPID_BROKER, EXCHANGE, queueName, sessionHandler);
+ sendQuery(ORG_APACHE_QPID_BROKER, BINDING, queueName, sessionHandler);
QPID_LOG(debug, "HA: Backup activated configuration bridge: " << queueName);
}
@@ -257,6 +265,7 @@ void BrokerReplicator::route(Deliverable& msg) {
if (type == QUEUE) doResponseQueue(values);
else if (type == EXCHANGE) doResponseExchange(values);
else if (type == BINDING) doResponseBind(values);
+ else if (type == HA_BROKER) doResponseHaBroker(values);
else QPID_LOG(error, "HA: Backup received unknown response type=" << type
<< " values=" << values);
}
@@ -288,7 +297,6 @@ void BrokerReplicator::doEventQueueDeclare(Variant::Map& values) {
// re-create from event.
// Events are always up to date, whereas responses may be
// out of date.
- QPID_LOG(debug, "HA: Backup created queue: " << name);
startQueueReplicator(result.first);
} else {
// FIXME aconway 2011-12-02: what's the right way to handle this?
@@ -400,7 +408,6 @@ void BrokerReplicator::doEventUnbind(Variant::Map& values) {
void BrokerReplicator::doResponseQueue(Variant::Map& values) {
QPID_LOG(debug, "HA: Backup queue response " << values);
- // FIXME aconway 2011-11-22: more flexible ways & defaults to indicate replication
Variant::Map argsMap(asMapVoid(values[ARGUMENTS]));
if (!replicateLevel(argsMap)) return;
framing::FieldTable args;
@@ -417,7 +424,6 @@ void BrokerReplicator::doResponseQueue(Variant::Map& values) {
""/*TODO: who is the user?*/,
""/*TODO: what should we use as connection id?*/);
if (result.second) {
- QPID_LOG(debug, "HA: Backup created catch-up queue: " << values[NAME]);
startQueueReplicator(result.first);
} else {
// FIXME aconway 2011-11-22: Normal to find queue already
@@ -474,7 +480,6 @@ void BrokerReplicator::doResponseBind(Variant::Map& values) {
std::string qName = getRefName(QUEUE_REF_PREFIX, values[QUEUE_REF]);
boost::shared_ptr<Exchange> exchange = broker.getExchanges().find(exName);
boost::shared_ptr<Queue> queue = broker.getQueues().find(qName);
- // FIXME aconway 2011-11-24: more flexible configuration for binding replication.
// Automatically replicate binding if queue and exchange exist and are replicated
if (exchange && replicateLevel(exchange->getArgs()) &&
@@ -490,6 +495,28 @@ void BrokerReplicator::doResponseBind(Variant::Map& values) {
}
}
+namespace {
+const string REPLICATE_DEFAULT="replicateDefault";
+}
+
+// Received the ha-broker configuration object for the primary broker.
+void BrokerReplicator::doResponseHaBroker(Variant::Map& values) {
+ try {
+ ReplicateLevel mine = haBroker.getSettings().replicateDefault;
+ ReplicateLevel primary = replicateLevel(values[REPLICATE_DEFAULT].asString());
+ if (mine != primary) {
+ std::ostringstream os;
+ os << "Replicate default on backup (" << mine
+ << ") does not match primary (" << primary << ")";
+ haBroker.shutdown(os.str());
+ }
+ } catch (const std::exception& e) {
+ std::ostringstream os;
+ os << "Received invalid replicate default from primary: " << e.what();
+ haBroker.shutdown(os.str());
+ }
+}
+
void BrokerReplicator::startQueueReplicator(const boost::shared_ptr<Queue>& queue) {
if (replicateLevel(queue->getSettings()) == RL_ALL) {
boost::shared_ptr<QueueReplicator> qr(new QueueReplicator(queue, link));
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