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#include "interconnect_mon.h"
#include "interconnect_tcp_proxy.h"
#include <library/cpp/json/json_value.h>
#include <library/cpp/json/json_writer.h>
#include <library/cpp/monlib/service/pages/templates.h>
#include <openssl/ssl.h>
#include <openssl/pem.h>
namespace NInterconnect {
using namespace NActors;
class TInterconnectMonActor : public TActor<TInterconnectMonActor> {
class TQueryProcessor : public TActorBootstrapped<TQueryProcessor> {
const TActorId Sender;
const bool Json;
TMap<ui32, TInterconnectProxyTCP::TProxyStats> Stats;
ui32 PendingReplies = 0;
public:
static constexpr IActor::EActorActivity ActorActivityType() {
return INTERCONNECT_MONACTOR;
}
TQueryProcessor(const TActorId& sender, bool json)
: Sender(sender)
, Json(json)
{}
void Bootstrap(const TActorContext& ctx) {
Become(&TThis::StateFunc, ctx, TDuration::Seconds(5), new TEvents::TEvWakeup);
Send(GetNameserviceActorId(), new TEvInterconnect::TEvListNodes);
}
void Handle(TEvInterconnect::TEvNodesInfo::TPtr ev, const TActorContext& ctx) {
TActorSystem* const as = ctx.ExecutorThread.ActorSystem;
for (const auto& node : ev->Get()->Nodes) {
Send(as->InterconnectProxy(node.NodeId), new TInterconnectProxyTCP::TEvQueryStats, IEventHandle::FlagTrackDelivery);
++PendingReplies;
}
GenerateResultWhenReady(ctx);
}
STRICT_STFUNC(StateFunc,
HFunc(TEvInterconnect::TEvNodesInfo, Handle)
HFunc(TInterconnectProxyTCP::TEvStats, Handle)
CFunc(TEvents::TSystem::Undelivered, HandleUndelivered)
CFunc(TEvents::TSystem::Wakeup, HandleWakeup)
)
void Handle(TInterconnectProxyTCP::TEvStats::TPtr& ev, const TActorContext& ctx) {
auto *msg = ev->Get();
Stats.emplace(msg->PeerNodeId, std::move(msg->ProxyStats));
--PendingReplies;
GenerateResultWhenReady(ctx);
}
void HandleUndelivered(const TActorContext& ctx) {
--PendingReplies;
GenerateResultWhenReady(ctx);
}
void HandleWakeup(const TActorContext& ctx) {
PendingReplies = 0;
GenerateResultWhenReady(ctx);
}
void GenerateResultWhenReady(const TActorContext& ctx) {
if (!PendingReplies) {
if (Json) {
ctx.Send(Sender, new NMon::TEvHttpInfoRes(GenerateJson(), 0, NMon::IEvHttpInfoRes::EContentType::Custom));
} else {
ctx.Send(Sender, new NMon::TEvHttpInfoRes(GenerateHtml()));
}
Die(ctx);
}
}
TString GenerateHtml() {
TStringStream str;
HTML(str) {
TABLE_CLASS("table-sortable table") {
TABLEHEAD() {
TABLER() {
TABLEH() { str << "Peer node id"; }
TABLEH() { str << "State"; }
TABLEH() { str << "Ping"; }
TABLEH() { str << "Clock skew"; }
TABLEH() { str << "Scope id"; }
TABLEH() { str << "Encryption"; }
TABLEH() { str << "LastSessionDieTime"; }
TABLEH() { str << "TotalOutputQueueSize"; }
TABLEH() { str << "Connected"; }
TABLEH() { str << "Host"; }
TABLEH() { str << "Port"; }
TABLEH() { str << "LastErrorTimestamp"; }
TABLEH() { str << "LastErrorKind"; }
TABLEH() { str << "LastErrorExplanation"; }
}
}
TABLEBODY() {
for (const auto& kv : Stats) {
TABLER() {
TABLED() { str << "<a href='" << kv.second.Path << "'>" << kv.first << "</a>"; }
TABLED() { str << kv.second.State; }
TABLED() {
if (kv.second.Ping != TDuration::Zero()) {
str << kv.second.Ping;
}
}
TABLED() {
if (kv.second.ClockSkew < 0) {
str << "-" << TDuration::MicroSeconds(-kv.second.ClockSkew);
} else {
str << "+" << TDuration::MicroSeconds(kv.second.ClockSkew);
}
}
TABLED() { str << ScopeIdToString(kv.second.PeerScopeId); }
TABLED() {
const char *color = kv.second.Encryption != "none" ? "green" : "red";
str << "<font color='" << color << "'>" << kv.second.Encryption << "</font>";
}
TABLED() {
if (kv.second.LastSessionDieTime != TInstant::Zero()) {
str << kv.second.LastSessionDieTime;
}
}
TABLED() { str << kv.second.TotalOutputQueueSize; }
TABLED() { str << (kv.second.Connected ? "yes" : "<strong>no</strong>"); }
TABLED() { str << kv.second.Host; }
TABLED() { str << kv.second.Port; }
TABLED() {
str << "<strong>";
if (kv.second.LastErrorTimestamp != TInstant::Zero()) {
str << kv.second.LastErrorTimestamp;
}
str << "</strong>";
}
TABLED() { str << "<strong>" << kv.second.LastErrorKind << "</strong>"; }
TABLED() { str << "<strong>" << kv.second.LastErrorExplanation << "</strong>"; }
}
}
}
}
}
return str.Str();
}
TString GenerateJson() {
NJson::TJsonValue json;
for (const auto& [nodeId, info] : Stats) {
NJson::TJsonValue item;
item["NodeId"] = nodeId;
auto id = [](const auto& x) { return x; };
auto toString = [](const auto& x) { return x.ToString(); };
#define JSON(NAME, FUN) item[#NAME] = FUN(info.NAME);
JSON(Path, id)
JSON(State, id)
JSON(PeerScopeId, ScopeIdToString)
JSON(LastSessionDieTime, toString)
JSON(TotalOutputQueueSize, id)
JSON(Connected, id)
JSON(Host, id)
JSON(Port, id)
JSON(LastErrorTimestamp, toString)
JSON(LastErrorKind, id)
JSON(LastErrorExplanation, id)
JSON(Ping, toString)
JSON(ClockSkew, id)
JSON(Encryption, id)
#undef JSON
json[ToString(nodeId)] = item;
}
TStringStream str(NMonitoring::HTTPOKJSON);
NJson::WriteJson(&str, &json);
return str.Str();
}
};
private:
TIntrusivePtr<TInterconnectProxyCommon> Common;
public:
static constexpr IActor::EActorActivity ActorActivityType() {
return INTERCONNECT_MONACTOR;
}
TInterconnectMonActor(TIntrusivePtr<TInterconnectProxyCommon> common)
: TActor(&TThis::StateFunc)
, Common(std::move(common))
{}
STRICT_STFUNC(StateFunc,
HFunc(NMon::TEvHttpInfo, Handle)
)
void Handle(NMon::TEvHttpInfo::TPtr& ev, const TActorContext& ctx) {
const auto& params = ev->Get()->Request.GetParams();
int certinfo = 0;
if (TryFromString(params.Get("certinfo"), certinfo) && certinfo) {
ctx.Send(ev->Sender, new NMon::TEvHttpInfoRes(GetCertInfoJson(), ev->Get()->SubRequestId,
NMon::TEvHttpInfoRes::Custom));
} else {
const bool json = params.Has("fmt") && params.Get("fmt") == "json";
ctx.Register(new TQueryProcessor(ev->Sender, json));
}
}
TString GetCertInfoJson() const {
NJson::TJsonValue json(NJson::JSON_MAP);
if (const TString cert = Common ? Common->Settings.Certificate : TString()) {
struct TEx : yexception {};
try {
const auto& cert = Common->Settings.Certificate;
std::unique_ptr<BIO, void(*)(BIO*)> bio(BIO_new_mem_buf(cert.data(), cert.size()), &BIO_vfree);
if (!bio) {
throw TEx() << "BIO_new_mem_buf failed";
}
std::unique_ptr<X509, void(*)(X509*)> x509(PEM_read_bio_X509(bio.get(), nullptr, nullptr, nullptr),
&X509_free);
if (!x509) {
throw TEx() << "PEM_read_bio_X509 failed";
}
X509_NAME *name = X509_get_subject_name(x509.get());
if (!name) {
throw TEx() << "X509_get_subject_name failed";
}
char buffer[4096];
if (char *p = X509_NAME_oneline(name, buffer, sizeof(buffer))) {
json["Subject"] = p;
}
if (int loc = X509_NAME_get_index_by_NID(name, NID_commonName, -1); loc >= 0) {
if (X509_NAME_ENTRY *entry = X509_NAME_get_entry(name, loc)) {
if (ASN1_STRING *data = X509_NAME_ENTRY_get_data(entry)) {
unsigned char *cn;
if (const int len = ASN1_STRING_to_UTF8(&cn, data); len >= 0) {
json["CommonName"] = TString(reinterpret_cast<char*>(cn), len);
OPENSSL_free(cn);
}
}
}
}
auto time = [](const ASN1_TIME *t, const char *name) -> TString {
if (t) {
struct tm tm;
if (ASN1_TIME_to_tm(t, &tm)) {
return Strftime("%Y-%m-%dT%H:%M:%S%z", &tm);
} else {
throw TEx() << "ASN1_TIME_to_tm failed";
}
} else {
throw TEx() << name << " failed";
}
};
json["NotBefore"] = time(X509_get0_notBefore(x509.get()), "X509_get0_notBefore");
json["NotAfter"] = time(X509_get0_notAfter(x509.get()), "X509_get0_notAfter");
} catch (const TEx& ex) {
json["Error"] = ex.what();
}
}
TStringStream str(NMonitoring::HTTPOKJSON);
NJson::WriteJson(&str, &json);
return str.Str();
}
};
IActor *CreateInterconnectMonActor(TIntrusivePtr<TInterconnectProxyCommon> common) {
return new TInterconnectMonActor(std::move(common));
}
} // NInterconnect
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