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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include "storageprotocol.h"
#include "serializationhelper.h"
#include "storagecommand.h"
#include "storagereply.h"
#include <vespa/vespalib/util/exceptions.h>
#include <vespa/document/util/stringutil.h>
#include <vespa/document/bucket/fixed_bucket_spaces.h>
#include <cassert>
#include <sstream>
#include <vespa/log/bufferedlogger.h>
LOG_SETUP(".storage.api.mbusprot.protocol");
namespace storage::mbusprot {
mbus::string StorageProtocol::NAME = "StorageProtocol";
StorageProtocol::StorageProtocol(const std::shared_ptr<const document::DocumentTypeRepo> repo)
: _serializer7_0(repo)
{
}
StorageProtocol::~StorageProtocol() = default;
mbus::IRoutingPolicy::UP
StorageProtocol::createPolicy(const mbus::string&, const mbus::string&) const
{
return mbus::IRoutingPolicy::UP();
}
namespace {
vespalib::Version version7_0(7, 41, 19);
}
static mbus::Blob
encodeMessage(const ProtocolSerialization & serializer,
const mbus::Routable & routable,
const StorageMessage & message,
const vespalib::Version & serializerVersion,
const vespalib::Version & actualVersion)
{
mbus::Blob blob(serializer.encode(*message.getInternalMessage()));
if (LOG_WOULD_LOG(spam)) {
std::ostringstream messageStream;
document::StringUtil::printAsHex(messageStream, blob.data(), blob.size());
LOG(spam, "Encoded message of protocol %s type %s using "
"%s serialization as version is %s:\n%s",
routable.getProtocol().c_str(),
message.getInternalMessage()->getType().toString().c_str(),
serializerVersion.toString().c_str(),
actualVersion.toString().c_str(),
messageStream.str().c_str());
}
return blob;
}
mbus::Blob
StorageProtocol::encode(const vespalib::Version& version,
const mbus::Routable& routable) const
{
const StorageMessage & message(dynamic_cast<const StorageMessage &>(routable));
try {
assert(message.getInternalMessage());
if (version < version7_0) {
LOGBP(error,
"Cannot encode message on version %s."
"Minimum version is %s. Cannot serialize %s.",
version.toString().c_str(),
version7_0.toString().c_str(),
message.getInternalMessage()->toString().c_str());
return mbus::Blob(0);
}
return encodeMessage(_serializer7_0, routable, message, version7_0, version);
} catch (std::exception & e) {
LOGBP(warning, "Failed to encode %s storage protocol message %s: %s",
version.toString().c_str(),
message.getInternalMessage()->toString().c_str(),
e.what());
}
return mbus::Blob(0);
}
static mbus::Routable::UP
decodeMessage(const ProtocolSerialization & serializer,
mbus::BlobRef data,
const api::MessageType & type,
const vespalib::Version & serializerVersion,
const vespalib::Version & actualVersion)
{
if (LOG_WOULD_LOG(spam)) {
std::ostringstream messageStream;
document::StringUtil::printAsHex(messageStream, data.data(), data.size());
LOG(spam,
"Decoding %s of version %s "
"using %s decoder from:\n%s",
type.toString().c_str(),
actualVersion.toString().c_str(),
serializerVersion.toString().c_str(),
messageStream.str().c_str());
}
if (type.isReply()) {
return std::make_unique<StorageReply>(data, serializer);
} else {
auto command = serializer.decodeCommand(data);
if (command && command->getInternalMessage()) {
command->getInternalMessage()->setApproxByteSize(data.size());
}
return mbus::Routable::UP(command.release());
}
}
mbus::Routable::UP
StorageProtocol::decode(const vespalib::Version & version,
mbus::BlobRef data) const
{
try {
document::ByteBuffer buf(data.data(), data.size());
auto & type = api::MessageType::get(
static_cast<api::MessageType::Id>(SerializationHelper::getInt(buf)));
StorageMessage::UP message;
if (version < version7_0) {
LOGBP(error,
"Cannot decode message on version %s. Minimum version is %s.",
version.toString().c_str(),
version7_0.toString().c_str());
return mbus::Routable::UP();
}
return decodeMessage(_serializer7_0, data, type, version7_0, version);
} catch (std::exception & e) {
std::ostringstream ost;
ost << "Failed to decode " << version.toString() << " messagebus "
<< "storage protocol message: " << e.what() << "\n";
document::StringUtil::printAsHex(ost, data.data(), data.size());
LOGBP(warning, "%s", ost.str().c_str());
}
return mbus::Routable::UP();
}
}
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