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// Copyright Verizon Media. 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 "outward-check.h"
#include <vespa/defaults.h>
#include <vespa/log/log.h>
#include <vespa/config/common/exceptions.h>
#include <vespa/vespalib/util/exceptions.h>
#include <thread>
#include <chrono>
LOG_SETUP(".env");
using namespace std::chrono_literals;
namespace config::sentinel {
constexpr std::chrono::milliseconds CONFIG_TIMEOUT_MS = 3min;
constexpr std::chrono::milliseconds MODEL_TIMEOUT_MS = 1500ms;
Env::Env()
: _cfgOwner(),
_rpcCommandQueue(),
_rpcServer(),
_stateApi(),
_startMetrics(),
_stateServer(),
_statePort(0)
{
_startMetrics.startedTime = vespalib::steady_clock::now();
}
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);
bool ok = _cfgOwner.checkForConfigUpdate();
// subscribe() should throw if something is not OK
LOG_ASSERT(ok && _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);
if (auto up = ConfigOwner::fetchModelConfig(MODEL_TIMEOUT_MS)) {
waitForConnectivity(*up);
}
}
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);
}
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");
}
}
void Env::waitForConnectivity(const ModelConfig &model) {
std::map<std::string, OutwardCheck> connectivityMap;
for (const auto & h : model.hosts) {
bool foundSentinelPort = false;
for (const auto & s : h.services) {
if (s.name == "config-sentinel") {
for (const auto & p : s.ports) {
if (p.tags.find("rpc") != p.tags.npos) {
connectivityMap.try_emplace(h.name, h.name, p.number, _rpcServer->orb());
foundSentinelPort = true;
}
}
}
}
if (! foundSentinelPort) {
LOG(warning, "Did not find 'config-sentinel' RPC port in model for host %s [%zd services]",
h.name.c_str(), h.services.size());
}
}
size_t cntOk = 0;
size_t cntBad = 0;
for (int retry = 1; retry <= 100; ++retry) {
cntOk = 0;
cntBad = 0;
for (const auto & [hostname, check] : connectivityMap) {
if (check.ok()) {
++cntOk;
} else if (check.bad()) {
++cntBad;
}
}
if (cntOk + cntBad == connectivityMap.size()) break;
respondAsEmpty();
std::this_thread::sleep_for(15ms);
if ((retry % 20) == 0) {
LOG(warning, "still waiting for connectivity checks after %d retries", retry);
}
}
for (const auto & [hostname, check] : connectivityMap) {
const char *s = "unknown";
if (check.ok()) { s = "ok"; }
if (check.bad()) { s = "bad"; }
LOG(info, "outward check status for host %s is: %s",
hostname.c_str(), s);
}
LOG_ASSERT(cntOk + cntBad == connectivityMap.size());
const char *myName = vespa::Defaults::vespaHostname();
int myPort = _rpcServer->getPort();
OutwardCheck selfCheck(myName, myPort, _rpcServer->orb());
for (int retry = 0; retry < 1000; ++retry) {
if (selfCheck.bad()) {
LOG(error, "Could not connect to '%s' (myself) at port %d", myName, myPort);
throw InvalidConfigException("failed to self-connect");
}
if (selfCheck.ok()) {
break;
}
std::this_thread::sleep_for(5ms);
}
LOG_ASSERT(selfCheck.ok());
}
}
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