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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include "cluster_controller_api_rpc_service.h"
#include "shared_rpc_resources.h"
#include "slime_cluster_state_bundle_codec.h"
#include <vespa/storage/storageserver/communicationmanager.h>
#include <vespa/storage/storageserver/message_dispatcher.h>
#include <vespa/storage/storageserver/rpcrequestwrapper.h>
#include <vespa/vdslib/state/clusterstate.h>
#include <vespa/fnet/frt/supervisor.h>
#include <vespa/fnet/frt/require_capabilities.h>
#include <vespa/fnet/frt/rpcrequest.h>
#include <vespa/storageapi/message/state.h>
#include <vespa/vespalib/util/host_name.h>
#include <vespa/vespalib/util/stringfmt.h>
#include <vespa/log/log.h>
LOG_SETUP(".storage.cluster_controller_api_rpc_service");
namespace storage::rpc {
ClusterControllerApiRpcService::ClusterControllerApiRpcService(
MessageDispatcher& message_dispatcher,
SharedRpcResources& rpc_resources)
: _message_dispatcher(message_dispatcher),
_closed(false)
{
register_server_methods(rpc_resources);
}
ClusterControllerApiRpcService::~ClusterControllerApiRpcService() = default;
void ClusterControllerApiRpcService::close() {
_closed.store(true);
}
namespace {
std::unique_ptr<FRT_RequireCapabilities> make_cc_api_capability_filter() {
return FRT_RequireCapabilities::of(vespalib::net::tls::Capability::content_cluster_controller_internal_state_api());
}
}
void ClusterControllerApiRpcService::register_server_methods(SharedRpcResources& rpc_resources) {
FRT_ReflectionBuilder rb(&rpc_resources.supervisor());
rb.DefineMethod("getnodestate3", "sii", "ss", FRT_METHOD(ClusterControllerApiRpcService::RPC_getNodeState2), this);
rb.RequestAccessFilter(make_cc_api_capability_filter());
rb.MethodDesc("Get state of this node");
rb.ParamDesc("nodestate", "Expected state of given node. If correct, the "
"request will be queued on target until it changes. To not give "
"any state use the string 'unknown', enforcing a direct reply.");
rb.ParamDesc("timeout", "Timeout of message in milliseconds, set by the state requester");
rb.ReturnDesc("nodestate", "State string for this node");
rb.ReturnDesc("hostinfo", "Information about host this node is running on");
//-------------------------------------------------------------------------
rb.DefineMethod("getnodestate2", "si", "s", FRT_METHOD(ClusterControllerApiRpcService::RPC_getNodeState2), this);
rb.RequestAccessFilter(make_cc_api_capability_filter());
rb.MethodDesc("Get state of this node");
rb.ParamDesc("nodestate", "Expected state of given node. If correct, the "
"request will be queued on target until it changes. To not give "
"any state use the string 'unknown', enforcing a direct reply.");
rb.ParamDesc("timeout", "Timeout of message in milliseconds, set by the state requester");
rb.ReturnDesc("nodestate", "State string for this node");
//-------------------------------------------------------------------------
rb.DefineMethod("setsystemstate2", "s", "", FRT_METHOD(ClusterControllerApiRpcService::RPC_setSystemState2), this);
rb.RequestAccessFilter(make_cc_api_capability_filter());
rb.MethodDesc("Set systemstate on this node");
rb.ParamDesc("systemstate", "New systemstate to set");
//-------------------------------------------------------------------------
rb.DefineMethod("setdistributionstates", "bix", "", FRT_METHOD(ClusterControllerApiRpcService::RPC_setDistributionStates), this);
rb.RequestAccessFilter(make_cc_api_capability_filter());
rb.MethodDesc("Set distribution states for cluster and bucket spaces");
rb.ParamDesc("compressionType", "Compression type for payload");
rb.ParamDesc("uncompressedSize", "Uncompressed size for payload");
rb.ParamDesc("payload", "Binary Slime format payload");
//-------------------------------------------------------------------------
rb.DefineMethod("activate_cluster_state_version", "i", "i", FRT_METHOD(ClusterControllerApiRpcService::RPC_activateClusterStateVersion), this);
rb.RequestAccessFilter(make_cc_api_capability_filter());
rb.MethodDesc("Explicitly activates an already prepared cluster state version");
rb.ParamDesc("activate_version", "Expected cluster state version to activate");
rb.ReturnDesc("actual_version", "Cluster state version that was prepared on the node prior to receiving RPC");
}
void ClusterControllerApiRpcService::detach_and_forward_to_enqueuer(
std::shared_ptr<api::StorageMessage> cmd,
FRT_RPCRequest* req)
{
// Create a request object to avoid needing a separate transport type
cmd->setTransportContext(std::make_unique<StorageTransportContext>(std::make_unique<RPCRequestWrapper>(req)));
req->Detach();
_message_dispatcher.dispatch_async(std::move(cmd));
}
void ClusterControllerApiRpcService::RPC_getNodeState2(FRT_RPCRequest* req) {
if (_closed) {
LOG(debug, "Not handling RPC call getNodeState2() as we have closed");
req->SetError(RPCRequestWrapper::ERR_NODE_SHUTTING_DOWN, "Node shutting down");
return;
}
vespalib::string expected(req->GetParams()->GetValue(0)._string._str,
req->GetParams()->GetValue(0)._string._len);
auto cmd = std::make_shared<api::GetNodeStateCommand>(expected != "unknown"
? std::make_unique<lib::NodeState>(expected)
: std::unique_ptr<lib::NodeState>());
cmd->setPriority(api::StorageMessage::VERYHIGH);
cmd->setTimeout(std::chrono::milliseconds(req->GetParams()->GetValue(1)._intval32));
if (req->GetParams()->GetNumValues() > 2) {
cmd->setSourceIndex(req->GetParams()->GetValue(2)._intval32);
}
detach_and_forward_to_enqueuer(std::move(cmd), req);
}
void ClusterControllerApiRpcService::RPC_setSystemState2(FRT_RPCRequest* req) {
if (_closed) {
LOG(debug, "Not handling RPC call setSystemState2() as we have closed");
req->SetError(RPCRequestWrapper::ERR_NODE_SHUTTING_DOWN, "Node shutting down");
return;
}
vespalib::string systemStateStr(req->GetParams()->GetValue(0)._string._str,
req->GetParams()->GetValue(0)._string._len);
lib::ClusterState systemState(systemStateStr);
auto cmd = std::make_shared<api::SetSystemStateCommand>(lib::ClusterStateBundle(systemState));
cmd->setPriority(api::StorageMessage::VERYHIGH);
detach_and_forward_to_enqueuer(std::move(cmd), req);
}
namespace {
std::shared_ptr<const lib::ClusterStateBundle> decode_bundle_from_params(const FRT_Values& params) {
const uint32_t uncompressed_length = params[1]._intval32;
if (uncompressed_length > ClusterControllerApiRpcService::StateBundleMaxUncompressedSize) {
throw std::range_error(vespalib::make_string("RPC ClusterStateBundle uncompressed size (%u) is "
"greater than max size (%u)", uncompressed_length,
ClusterControllerApiRpcService::StateBundleMaxUncompressedSize));
}
SlimeClusterStateBundleCodec codec;
EncodedClusterStateBundle encoded_bundle;
encoded_bundle._compression_type = vespalib::compression::CompressionConfig::toType(params[0]._intval8);
encoded_bundle._uncompressed_length = uncompressed_length;
// Caution: type cast to const ptr is essential or DataBuffer behavior changes!
encoded_bundle._buffer = std::make_unique<vespalib::DataBuffer>(
static_cast<const char*>(params[2]._data._buf), params[2]._data._len);
return codec.decode(encoded_bundle);
}
}
void ClusterControllerApiRpcService::RPC_setDistributionStates(FRT_RPCRequest* req) {
if (_closed) {
LOG(debug, "Not handling RPC call setDistributionStates() as we have closed");
req->SetError(RPCRequestWrapper::ERR_NODE_SHUTTING_DOWN, "Node shutting down");
return;
}
std::shared_ptr<const lib::ClusterStateBundle> state_bundle;
try {
state_bundle = decode_bundle_from_params(*req->GetParams());
} catch (std::exception& e) {
LOG(error, "setDistributionStates RPC failed decoding: %s", e.what());
req->SetError(RPCRequestWrapper::ERR_BAD_REQUEST, e.what());
return;
}
LOG(debug, "Got state bundle %s", state_bundle->toString().c_str());
// TODO add constructor taking in shared_ptr directly instead?
auto cmd = std::make_shared<api::SetSystemStateCommand>(*state_bundle);
cmd->setPriority(api::StorageMessage::VERYHIGH);
detach_and_forward_to_enqueuer(std::move(cmd), req);
}
void ClusterControllerApiRpcService::RPC_activateClusterStateVersion(FRT_RPCRequest* req) {
if (_closed) {
LOG(debug, "Not handling RPC call activate_cluster_state_version() as we have closed");
req->SetError(RPCRequestWrapper::ERR_NODE_SHUTTING_DOWN, "Node shutting down");
return;
}
const uint32_t activate_version = req->GetParams()->GetValue(0)._intval32;
auto cmd = std::make_shared<api::ActivateClusterStateVersionCommand>(activate_version);
cmd->setPriority(api::StorageMessage::VERYHIGH);
LOG(debug, "Got state activation request for version %u", activate_version);
detach_and_forward_to_enqueuer(std::move(cmd), req);
}
}
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