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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include "clusterstatehandler.h"
#include "iclusterstatechangedhandler.h"
#include <vespa/vespalib/util/lambdatask.h>
#include <sstream>
#include <vespa/log/log.h>
LOG_SETUP(".proton.server.clusterstatehandler");
using storage::spi::Bucket;
using storage::spi::BucketIdListResult;
using storage::spi::ClusterState;
using storage::spi::Result;
using vespalib::Executor;
using vespalib::makeLambdaTask;
namespace proton {
namespace {
class ClusterStateAdapter : public IBucketStateCalculator
{
private:
ClusterState _calc;
bool _clusterUp;
bool _nodeUp;
bool _nodeInitializing;
bool _nodeRetired;
bool _nodeMaintenance;
public:
ClusterStateAdapter(const ClusterState &calc)
: _calc(calc),
_clusterUp(_calc.clusterUp()),
_nodeUp(_calc.nodeUp()),
_nodeInitializing(_calc.nodeInitializing()),
_nodeRetired(_calc.nodeRetired()),
_nodeMaintenance(_calc.nodeMaintenance())
{
}
vespalib::Trinary shouldBeReady(const document::Bucket &bucket) const override {
return _calc.shouldBeReady(Bucket(bucket));
}
bool clusterUp() const override { return _clusterUp; }
bool nodeUp() const override { return _nodeUp; }
bool nodeInitializing() const override { return _nodeInitializing; }
bool nodeRetired() const override { return _nodeRetired; }
bool nodeMaintenance() const noexcept override { return _nodeMaintenance; }
bool node_retired_or_maintenance() const noexcept override { return _nodeRetired || _nodeMaintenance; }
};
}
void
ClusterStateHandler::performSetClusterState(const ClusterState *calc, IGenericResultHandler *resultHandler)
{
LOG(debug,
"performSetClusterState(): "
"clusterUp(%s), nodeUp(%s), nodeInitializing(%s), nodeMaintenance(%s)"
"changedHandlers.size() = %zu",
(calc->clusterUp() ? "true" : "false"),
(calc->nodeUp() ? "true" : "false"),
(calc->nodeInitializing() ? "true" : "false"),
(calc->nodeMaintenance() ? "true" : "false"),
_changedHandlers.size());
if (!_changedHandlers.empty()) {
auto newCalc = std::make_shared<ClusterStateAdapter>(*calc);
for (const auto & handler : _changedHandlers ) {
handler->notifyClusterStateChanged(newCalc);
}
}
resultHandler->handle(Result());
}
void
ClusterStateHandler::performGetModifiedBuckets(IBucketIdListResultHandler *resultHandler)
{
storage::spi::BucketIdListResult::List modifiedBuckets(_modifiedBuckets.begin(), _modifiedBuckets.end());
if (LOG_WOULD_LOG(debug) && !modifiedBuckets.empty()) {
std::ostringstream oss;
for (size_t i = 0; i < modifiedBuckets.size(); ++i) {
if (i != 0) {
oss << ",";
}
oss << modifiedBuckets[i];
}
LOG(debug, "performGetModifiedBuckets(): modifiedBuckets(%zu): %s",
modifiedBuckets.size(), oss.str().c_str());
}
resultHandler->handle(BucketIdListResult(std::move(modifiedBuckets)));
_modifiedBuckets.clear();
}
void
ClusterStateHandler::notifyBucketModified(const document::BucketId &bucket)
{
_modifiedBuckets.insert(bucket);
}
ClusterStateHandler::ClusterStateHandler(Executor &executor)
: IBucketModifiedHandler(),
IClusterStateChangedNotifier(),
_executor(executor),
_changedHandlers(),
_modifiedBuckets()
{
}
ClusterStateHandler::~ClusterStateHandler()
{
assert(_changedHandlers.empty());
}
void
ClusterStateHandler::
addClusterStateChangedHandler(IClusterStateChangedHandler *handler)
{
_changedHandlers.push_back(handler);
}
void
ClusterStateHandler::
removeClusterStateChangedHandler(IClusterStateChangedHandler *handler)
{
auto it = std::find(_changedHandlers.begin(), _changedHandlers.end(), handler);
if (it != _changedHandlers.end()) {
_changedHandlers.erase(it);
}
}
void
ClusterStateHandler::handleSetClusterState(const ClusterState &calc, IGenericResultHandler &resultHandler)
{
_executor.execute(makeLambdaTask([&]() {
performSetClusterState(&calc, &resultHandler);
}));
}
void
ClusterStateHandler::handleGetModifiedBuckets(IBucketIdListResultHandler &resultHandler)
{
_executor.execute(makeLambdaTask([&]() {
performGetModifiedBuckets(&resultHandler);
}));
}
}
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