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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 <vespa/vespalib/util/stringfmt.h>
#include <thread>
#include <chrono>
LOG_SETUP(".env");
using vespalib::make_string_short::fmt;
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");
}
}
namespace {
const char *toString(CcResult value) {
switch (value) {
case CcResult::UNKNOWN: return "unknown";
case CcResult::CONN_FAIL: return "failed to connect";
case CcResult::REVERSE_FAIL: return "connect OK, but reverse check FAILED";
case CcResult::REVERSE_UNAVAIL: return "connect OK, but reverse check unavailable";
case CcResult::ALL_OK: return "both ways connectivity OK";
}
LOG(error, "Unknown CcResult enum value: %d", (int)value);
LOG_ABORT("Unknown CcResult enum value");
}
std::map<std::string, std::string> specsFrom(const ModelConfig &model) {
std::map<std::string, std::string> checkSpecs;
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) {
auto spec = fmt("tcp/%s:%d", h.name.c_str(), p.number);
checkSpecs[h.name] = spec;
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());
}
}
return checkSpecs;
}
}
void Env::waitForConnectivity(const ModelConfig &model) {
auto checkSpecs = specsFrom(model);
OutwardCheckContext checkContext(checkSpecs.size(),
vespa::Defaults::vespaHostname(),
_rpcServer->getPort(),
_rpcServer->orb());
std::map<std::string, OutwardCheck> connectivityMap;
for (const auto & [ hn, spec ] : checkSpecs) {
connectivityMap.try_emplace(hn, spec, checkContext);
}
checkContext.latch.await();
for (const auto & [hostname, check] : connectivityMap) {
LOG(info, "outward check status for host %s is: %s",
hostname.c_str(), toString(check.result()));
}
}
}
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