1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
|
// 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 "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(".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 std::chrono::milliseconds MODEL_TIMEOUT_MS = 1500ms;
} // namespace <unnamed>
Env::Env()
: _cfgOwner(),
_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);
// subscribe() should throw if something is not OK
for (int retry = 0; retry < maxRetryLoops; ++retry) {
_cfgOwner.checkForConfigUpdate();
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);
if (waitForConnectivity(retry)) {
_stateApi.myHealth.setOk();
return;
} else {
LOG(warning, "Bad network connectivity, retry from start");
}
}
throw InvalidConfigException("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);
}
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");
}
}
bool Env::waitForConnectivity(int outerRetry) {
auto up = ConfigOwner::fetchModelConfig(MODEL_TIMEOUT_MS);
if (! up) {
LOG(warning, "could not get model config, skipping connectivity checks");
return true;
}
Connectivity::CheckResult lastCheckResult;
Connectivity checker(_cfgOwner.getConfig().connectivity, *_rpcServer);
for (int retry = 0; retry < maxRetriesInsideLoop; ++retry) {
auto res = checker.checkConnectivity(*up);
if (res.enoughOk) {
LOG(info, "Connectivity check OK, proceeding with service startup");
if (retry > 0 || ! res.allOk) {
res.logDetails();
}
return true;
}
LOG(warning, "Connectivity check FAILED (try %d)", 1 + retry + maxRetriesInsideLoop*outerRetry);
_stateApi.myHealth.setFailed("FAILED connectivity check");
if (lastCheckResult.details != res.details) {
res.logDetails();
lastCheckResult = std::move(res);
}
for (int i = 0; i <= outerRetry; ++i) {
respondAsEmpty();
maybeStopNow();
std::this_thread::sleep_for(1s);
}
}
return false;
}
}
|
