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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include "bm_message_bus.h"
#include "pending_tracker_hash.h"
#include "pending_tracker.h"
#include "storage_reply_error_checker.h"
#include <vespa/messagebus/emptyreply.h>
#include <vespa/messagebus/network/rpcnetworkparams.h>
#include <vespa/messagebus/rpcmessagebus.h>
#include <vespa/messagebus/ireplyhandler.h>
#include <vespa/documentapi/messagebus/documentprotocol.h>
#include <vespa/documentapi/messagebus/messages/documentmessage.h>
#include <vespa/storageapi/mbusprot/storagereply.h>
#include <vespa/vespalib/stllike/asciistream.h>
#include <vespa/log/log.h>
LOG_SETUP(".bm_message_bus");
using documentapi::DocumentProtocol;
using mbus::RPCMessageBus;
using mbus::Reply;
using mbus::SourceSession;
using storage::mbusprot::StorageReply;
namespace search::bmcluster {
namespace {
std::atomic<uint64_t> bm_message_bus_msg_id(0u);
vespalib::string reply_as_string(Reply &reply) {
vespalib::asciistream os;
if (reply.getType() == 0) {
os << "empty reply";
} else {
os << "reply=" << reply.toString() << ", protocol=" << reply.getProtocol();
}
os << ", ";
auto message = reply.getMessage();
if (message) {
os << "message=" << message->toString();
os << ", protocol=" << message->getProtocol();
} else {
os << "no message";
}
reply.setMessage(std::move(message));
os << ", ";
if (reply.hasErrors()) {
os << "errors=[";
for (uint32_t i = 0; i < reply.getNumErrors(); ++i) {
auto &error = reply.getError(i);
if (i > 0) {
os << ", ";
}
os << mbus::ErrorCode::getName(error.getCode()) << ": " << error.getMessage() << " (from " << error.getService() << ")";
}
os << "]";
} else {
os << "no errors";
}
return os.str();
}
}
class BmMessageBus::ReplyHandler : public mbus::IReplyHandler,
public StorageReplyErrorChecker
{
PendingTrackerHash _pending_hash;
public:
ReplyHandler();
~ReplyHandler() override;
void handleReply(std::unique_ptr<Reply> reply) override;
void retain(uint64_t msg_id, PendingTracker &tracker) { _pending_hash.retain(msg_id, tracker); }
void message_aborted(uint64_t msg_id);
};
BmMessageBus::ReplyHandler::ReplyHandler()
: mbus::IReplyHandler(),
StorageReplyErrorChecker(),
_pending_hash()
{
}
BmMessageBus::ReplyHandler::~ReplyHandler() = default;
void
BmMessageBus::ReplyHandler::handleReply(std::unique_ptr<Reply> reply)
{
auto msg_id = reply->getContext().value.UINT64;
auto tracker = _pending_hash.release(msg_id);
if (tracker != nullptr) {
bool failed = false;
if (reply->getType() == 0 || reply->hasErrors()) {
failed = true; // empty reply or error
} else {
auto protocol = reply->getProtocol();
if (protocol != DocumentProtocol::NAME) {
failed = true; // unexpected protocol
}
}
if (failed) {
++_errors;
if (_errors <= 10) {
LOG(error, "Unexpected %s", reply_as_string(*reply).c_str());
}
}
tracker->release();
} else {
++_errors;
LOG(error, "Untracked %s", reply_as_string(*reply).c_str());
}
}
void
BmMessageBus::ReplyHandler::message_aborted(uint64_t msg_id)
{
++_errors;
auto tracker = _pending_hash.release(msg_id);
tracker->release();
}
BmMessageBus::BmMessageBus(const config::ConfigUri& config_uri,
std::shared_ptr<const document::DocumentTypeRepo> document_type_repo)
: _reply_handler(std::make_unique<ReplyHandler>()),
_message_bus(),
_session()
{
mbus::RPCNetworkParams params(config_uri);
mbus::ProtocolSet protocol_set;
protocol_set.add(std::make_shared<DocumentProtocol>(document_type_repo));
params.setIdentity(mbus::Identity("vespa-bm-client"));
_message_bus = std::make_unique<mbus::RPCMessageBus>(
protocol_set,
params,
config_uri);
mbus::SourceSessionParams srcParams;
srcParams.setThrottlePolicy(mbus::IThrottlePolicy::SP());
srcParams.setReplyHandler(*_reply_handler);
_session = _message_bus->getMessageBus().createSourceSession(srcParams);
}
BmMessageBus::~BmMessageBus()
{
_session.reset();
_message_bus.reset();
_reply_handler.reset();
}
uint32_t
BmMessageBus::get_error_count() const
{
return _reply_handler->get_error_count();
}
void
BmMessageBus::send_msg(std::unique_ptr<mbus::Message> msg, const mbus::Route &route, PendingTracker &tracker)
{
auto msg_id = ++bm_message_bus_msg_id;
_reply_handler->retain(msg_id, tracker);
msg->setContext(mbus::Context(msg_id));
msg->setRetryEnabled(false);
auto result = _session->send(std::move(msg), route);
if (!result.isAccepted()) {
LOG(error, "Message not accepeted, error is '%s'", result.getError().toString().c_str());
_reply_handler->message_aborted(msg_id);
}
}
}
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