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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include "env.h"
#include "check-completion-handler.h"
#include "connectivity.h"
#include <vespa/defaults.h>
#include <vespa/log/log.h>
#include <vespa/config/common/exceptions.h>
#include <vespa/vespalib/util/exceptions.h>
#include <vespa/vespalib/util/signalhandler.h>
#include <vespa/vespalib/util/stringfmt.h>
#include <thread>
#include <chrono>
LOG_SETUP(".sentinel.env");
using vespalib::make_string_short::fmt;
using namespace std::chrono_literals;
namespace config::sentinel {
namespace {
void maybeStopNow() {
if (vespalib::SignalHandler::INT.check() ||
vespalib::SignalHandler::TERM.check())
{
throw vespalib::FatalException("got signal during boot()");
}
}
constexpr std::chrono::milliseconds CONFIG_TIMEOUT_MS = 3min;
constexpr int maxConnectivityRetries = 100;
} // namespace <unnamed>
Env::Env()
: _cfgOwner(),
_modelOwner("admin/model"),
_rpcCommandQueue(),
_rpcServer(),
_stateApi(),
_startMetrics(),
_stateServer(),
_statePort(0)
{
_startMetrics.startedTime = vespalib::steady_clock::now();
_stateApi.myHealth.setFailed("initializing...");
}
Env::~Env() = default;
void Env::boot(const std::string &configId) {
LOG(debug, "Reading configuration for ID: %s", configId.c_str());
_cfgOwner.subscribe(configId, CONFIG_TIMEOUT_MS);
_modelOwner.start(CONFIG_TIMEOUT_MS, true);
// subscribe() should throw if something is not OK
vespalib::SignalHandler::TERM.hook();
vespalib::SignalHandler::INT.hook();
Connectivity checker;
for (int retry = 0; retry < maxConnectivityRetries; ++retry) {
bool changed = _cfgOwner.checkForConfigUpdate();
LOG_ASSERT(changed || retry > 0);
if (changed) {
LOG_ASSERT(_cfgOwner.hasConfig());
const auto & cfg = _cfgOwner.getConfig();
LOG(config, "Booting sentinel '%s' with [stateserver port %d] and [rpc port %d]",
configId.c_str(), cfg.port.telnet, cfg.port.rpc);
rpcPort(cfg.port.rpc);
statePort(cfg.port.telnet);
_modelOwner.checkForUpdates();
auto model = _modelOwner.getModelConfig();
if (model.has_value()) {
checker.configure(cfg.connectivity, model.value());
}
}
if (checker.checkConnectivity(*_rpcServer)) {
_stateApi.myHealth.setOk();
return;
} else {
_stateApi.myHealth.setFailed("FAILED connectivity check");
if ((retry % 10) == 0) {
LOG(warning, "Bad network connectivity (try %d)", 1+retry);
}
for (int i = 0; i < 5; ++i) {
respondAsEmpty();
maybeStopNow();
std::this_thread::sleep_for(600ms);
}
}
}
throw vespalib::FatalException("Giving up - too many connectivity check failures");
}
void Env::rpcPort(int port) {
if (port < 0 || port > 65535) {
throw vespalib::FatalException("Bad port " + std::to_string(port) + ", expected range [1, 65535]", VESPA_STRLOC);
}
if (port == 0) {
port = 19097; // default in config
}
if (_rpcServer && port == _rpcServer->getPort()) {
return; // ok already
}
_rpcServer = std::make_unique<RpcServer>(port, _rpcCommandQueue, _modelOwner);
}
void Env::statePort(int port) {
if (port < 0 || port > 65535) {
throw vespalib::FatalException("Bad port " + std::to_string(port) + ", expected range [1, 65535]", VESPA_STRLOC);
}
if (port == 0) {
port = 19098; // default in config
}
if (_stateServer && port == _statePort) {
return; // ok already
}
LOG(debug, "Config-sentinel accepts state connections on port %d", port);
_stateServer = std::make_unique<vespalib::StateServer>(
port, _stateApi.myHealth, _startMetrics.producer, _stateApi.myComponents);
_statePort = port;
}
void Env::notifyConfigUpdated() {
vespalib::ComponentConfigProducer::Config current("sentinel", _cfgOwner.getGeneration(), "ok");
_stateApi.myComponents.addConfig(current);
}
void Env::respondAsEmpty() {
auto commands = _rpcCommandQueue.drain();
for (Cmd::UP &cmd : commands) {
cmd->retError("still booting, not ready for all RPC commands");
}
}
}
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