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
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
|
#include "interconnect.h"
#include "interconnect_impl.h"
#include "interconnect_address.h"
#include "interconnect_nameserver_base.h"
#include "events_local.h"
#include "logging.h"
#include <library/cpp/actors/core/hfunc.h>
#include <library/cpp/actors/core/log.h>
namespace NActors {
class TInterconnectDynamicNameserver
: public TInterconnectNameserverBase<TInterconnectDynamicNameserver>
, public TInterconnectLoggingBase
{
struct TPendingRequest {
TEvInterconnect::TEvResolveNode::TPtr Request;
TInstant Deadline;
TPendingRequest(TEvInterconnect::TEvResolveNode::TPtr request, const TInstant& deadline)
: Request(request), Deadline(deadline)
{
}
};
TMap<ui32, TTableNameserverSetup::TNodeInfo> NodeTable;
TVector<TPendingRequest> PendingRequests;
TDuration PendingPeriod;
void PrintInfo() {
TString logMsg = TStringBuilder() << "Table size: " << NodeTable.size();
for (const auto& [nodeId, node] : NodeTable) {
TString str = TStringBuilder() << "\n > Node " << nodeId << " `" << node.Address << "`:" << node.Port << ", host: " << node.Host << ", resolveHost: " << node.ResolveHost;
logMsg += str;
}
LOG_TRACE_IC("ICN01", "%s", logMsg.c_str());
}
bool IsNodeUpdated(const ui32 nodeId, const TString& address, const ui32 port) {
bool printInfo = false;
auto it = NodeTable.find(nodeId);
if (it == NodeTable.end()) {
LOG_TRACE_IC("ICN02", "New node %u `%s`: %u",
nodeId, address.c_str(), port);
printInfo = true;
} else if (it->second.Address != address || it->second.Port != port) {
LOG_TRACE_IC("ICN03", "Updated node %u `%s`: %u (from `%s`: %u)",
nodeId, address.c_str(), port, it->second.Address.c_str(), it->second.Port);
printInfo = true;
Send(TActivationContext::InterconnectProxy(nodeId), new TEvInterconnect::TEvDisconnect);
}
return printInfo;
}
void DiscardTimedOutRequests(const TActorContext& ctx, ui32 compactionCount = 0) {
auto now = Now();
for (auto& pending : PendingRequests) {
if (pending.Request && pending.Deadline > now) {
LOG_ERROR_IC("ICN06", "Unknown nodeId: %u", pending.Request->Get()->Record.GetNodeId());
auto reply = new TEvLocalNodeInfo;
reply->NodeId = pending.Request->Get()->Record.GetNodeId();
ctx.Send(pending.Request->Sender, reply);
pending.Request.Reset();
compactionCount++;
}
}
if (compactionCount) {
TVector<TPendingRequest> requests;
if (compactionCount < PendingRequests.size()) { // sanity check
requests.reserve(PendingRequests.size() - compactionCount);
}
for (auto& pending : PendingRequests) {
if (pending.Request) {
requests.emplace_back(pending.Request, pending.Deadline);
}
}
PendingRequests.swap(requests);
}
}
void SchedulePeriodic() {
Schedule(TDuration::MilliSeconds(200), new TEvents::TEvWakeup());
}
public:
static constexpr EActivityType ActorActivityType() {
return EActivityType::NAMESERVICE;
}
TInterconnectDynamicNameserver(const TIntrusivePtr<TTableNameserverSetup>& setup, const TDuration& pendingPeriod, ui32 /*resolvePoolId*/ )
: TInterconnectNameserverBase<TInterconnectDynamicNameserver>(&TInterconnectDynamicNameserver::StateFunc, NodeTable)
, NodeTable(setup->StaticNodeTable)
, PendingPeriod(pendingPeriod)
{
Y_ABORT_UNLESS(setup->IsEntriesUnique());
}
STFUNC(StateFunc) {
try {
switch (ev->GetTypeRewrite()) {
HFunc(TEvInterconnect::TEvResolveNode, Handle);
HFunc(TEvResolveAddress, Handle);
HFunc(TEvInterconnect::TEvListNodes, Handle);
HFunc(TEvInterconnect::TEvGetNode, Handle);
HFunc(TEvInterconnect::TEvNodesInfo, HandleUpdate);
CFunc(TEvents::TEvWakeup::EventType, HandlePeriodic);
}
} catch (...) {
LOG_ERROR_IC("ICN09", "%s", CurrentExceptionMessage().c_str());
}
}
void HandleMissedNodeId(TEvInterconnect::TEvResolveNode::TPtr& ev,
const TActorContext& ctx,
const TInstant& deadline) {
if (PendingPeriod) {
if (PendingRequests.size() == 0) {
SchedulePeriodic();
}
PendingRequests.emplace_back(std::move(ev), Min(deadline, Now() + PendingPeriod));
} else {
LOG_ERROR_IC("ICN07", "Unknown nodeId: %u", ev->Get()->Record.GetNodeId());
TInterconnectNameserverBase::HandleMissedNodeId(ev, ctx, deadline);
}
}
void HandleUpdate(TEvInterconnect::TEvNodesInfo::TPtr& ev,
const TActorContext& ctx) {
auto request = ev->Get();
LOG_TRACE_IC("ICN04", "Update TEvNodesInfo with sz: %lu ", request->Nodes.size());
bool printInfo = false;
ui32 compactionCount = 0;
for (const auto& node : request->Nodes) {
printInfo |= IsNodeUpdated(node.NodeId, node.Address, node.Port);
NodeTable[node.NodeId] = TTableNameserverSetup::TNodeInfo(
node.Address, node.Host, node.ResolveHost, node.Port, node.Location);
for (auto& pending : PendingRequests) {
if (pending.Request && pending.Request->Get()->Record.GetNodeId() == node.NodeId) {
LOG_TRACE_IC("ICN05", "Pending nodeId: %u discovered", node.NodeId);
RegisterWithSameMailbox(
CreateResolveActor(node.NodeId, NodeTable[node.NodeId], pending.Request->Sender, SelfId(), pending.Deadline));
pending.Request.Reset();
compactionCount++;
}
}
}
if (printInfo) {
PrintInfo();
}
DiscardTimedOutRequests(ctx, compactionCount);
}
void HandlePeriodic(const TActorContext& ctx) {
DiscardTimedOutRequests(ctx, 0);
if (PendingRequests.size()) {
SchedulePeriodic();
}
}
};
IActor* CreateDynamicNameserver(const TIntrusivePtr<TTableNameserverSetup>& setup,
const TDuration& pendingPeriod,
ui32 poolId) {
return new TInterconnectDynamicNameserver(setup, pendingPeriod, poolId);
}
}
|
