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| 1 | +#include "kqp_proxy_service_impl.h" |
| 2 | + |
| 3 | +#include <ydb/core/kqp/workload_service/actors/actors.h> |
| 4 | +#include <ydb/core/kqp/workload_service/common/events.h> |
| 5 | + |
| 6 | +#include <ydb/core/tx/scheme_cache/scheme_cache.h> |
| 7 | + |
| 8 | + |
| 9 | +namespace NKikimr::NKqp { |
| 10 | + |
| 11 | +namespace { |
| 12 | + |
| 13 | +class TDatabaseSubscriberActor : public TActor<TDatabaseSubscriberActor> { |
| 14 | + using TBase = TActor<TDatabaseSubscriberActor>; |
| 15 | + |
| 16 | + struct TDatabaseState { |
| 17 | + bool FetchRequestIsRunning = false; |
| 18 | + TPathId WatchPathId; |
| 19 | + |
| 20 | + TString DatabaseId; |
| 21 | + bool Serverless = false; |
| 22 | + std::unordered_set<TActorId> Subscribers; |
| 23 | + }; |
| 24 | + |
| 25 | +public: |
| 26 | + TDatabaseSubscriberActor() |
| 27 | + : TBase(&TDatabaseSubscriberActor::StateFunc) |
| 28 | + {} |
| 29 | + |
| 30 | + void Handle(TEvKqp::TEvSubscribeOnDatabase::TPtr& ev) { |
| 31 | + const TString& database = CanonizePath(ev->Get()->Database); |
| 32 | + auto& databaseState = Subscriptions[database]; |
| 33 | + |
| 34 | + if (databaseState.DatabaseId) { |
| 35 | + SendSubscriberInfo(database, ev->Sender, databaseState, Ydb::StatusIds::SUCCESS); |
| 36 | + } else if (!databaseState.FetchRequestIsRunning) { |
| 37 | + Register(NWorkload::CreateDatabaseFetcherActor(SelfId(), database)); |
| 38 | + databaseState.FetchRequestIsRunning = true; |
| 39 | + } |
| 40 | + |
| 41 | + databaseState.Subscribers.insert(ev->Sender); |
| 42 | + } |
| 43 | + |
| 44 | + void Handle(NWorkload::TEvPrivate::TEvFetchDatabaseResponse::TPtr& ev) { |
| 45 | + const TString& database = CanonizePath(ev->Get()->Database); |
| 46 | + auto& databaseState = Subscriptions[database]; |
| 47 | + |
| 48 | + UpdateDatabaseState(databaseState, database, ev->Get()->PathId, ev->Get()->Serverless); |
| 49 | + UpdateSubscribersInfo(database, databaseState, ev->Get()->Status, ev->Get()->Issues); |
| 50 | + |
| 51 | + databaseState.FetchRequestIsRunning = false; |
| 52 | + databaseState.WatchPathId = ev->Get()->PathId; |
| 53 | + |
| 54 | + if (ev->Get()->Status == Ydb::StatusIds::SUCCESS) { |
| 55 | + WatchKey++; |
| 56 | + Send(MakeSchemeCacheID(), new TEvTxProxySchemeCache::TEvWatchPathId(databaseState.WatchPathId, WatchKey)); |
| 57 | + WatchDatabases.insert({WatchKey, database}); |
| 58 | + } |
| 59 | + } |
| 60 | + |
| 61 | + void Handle(TEvTxProxySchemeCache::TEvWatchNotifyUpdated::TPtr& ev) { |
| 62 | + auto it = WatchDatabases.find(ev->Get()->Key); |
| 63 | + if (it == WatchDatabases.end()) { |
| 64 | + return; |
| 65 | + } |
| 66 | + |
| 67 | + const auto& result = ev->Get()->Result; |
| 68 | + if (!result || result->GetStatus() != NKikimrScheme::StatusSuccess) { |
| 69 | + return; |
| 70 | + } |
| 71 | + |
| 72 | + if (result->GetPathDescription().HasDomainDescription()) { |
| 73 | + NSchemeCache::TDomainInfo description(result->GetPathDescription().GetDomainDescription()); |
| 74 | + |
| 75 | + auto& databaseState = Subscriptions[it->second]; |
| 76 | + UpdateDatabaseState(databaseState, it->second, description.DomainKey, description.IsServerless()); |
| 77 | + UpdateSubscribersInfo(it->second, databaseState, Ydb::StatusIds::SUCCESS); |
| 78 | + } |
| 79 | + } |
| 80 | + |
| 81 | + void Handle(TEvTxProxySchemeCache::TEvWatchNotifyDeleted::TPtr& ev) { |
| 82 | + auto it = WatchDatabases.find(ev->Get()->Key); |
| 83 | + if (it == WatchDatabases.end()) { |
| 84 | + return; |
| 85 | + } |
| 86 | + |
| 87 | + Send(MakeSchemeCacheID(), new TEvTxProxySchemeCache::TEvWatchRemove(ev->Get()->Key)); |
| 88 | + |
| 89 | + auto databaseStateIt = Subscriptions.find(it->second); |
| 90 | + if (databaseStateIt != Subscriptions.end()) { |
| 91 | + UpdateSubscribersInfo(it->second, databaseStateIt->second, Ydb::StatusIds::NOT_FOUND, {NYql::TIssue{"Database was dropped"}}); |
| 92 | + Subscriptions.erase(databaseStateIt); |
| 93 | + } |
| 94 | + |
| 95 | + WatchDatabases.erase(it); |
| 96 | + } |
| 97 | + |
| 98 | + void HandlePoison() { |
| 99 | + if (!WatchDatabases.empty()) { |
| 100 | + Send(MakeSchemeCacheID(), new TEvTxProxySchemeCache::TEvWatchRemove(0)); |
| 101 | + } |
| 102 | + |
| 103 | + TBase::PassAway(); |
| 104 | + } |
| 105 | + |
| 106 | + STRICT_STFUNC(StateFunc, |
| 107 | + hFunc(TEvKqp::TEvSubscribeOnDatabase, Handle); |
| 108 | + hFunc(NWorkload::TEvPrivate::TEvFetchDatabaseResponse, Handle); |
| 109 | + hFunc(TEvTxProxySchemeCache::TEvWatchNotifyUpdated, Handle); |
| 110 | + hFunc(TEvTxProxySchemeCache::TEvWatchNotifyDeleted, Handle); |
| 111 | + sFunc(TEvents::TEvPoison, HandlePoison); |
| 112 | + ) |
| 113 | + |
| 114 | +private: |
| 115 | + void UpdateDatabaseState(TDatabaseState& databaseState, const TString& database, TPathId pathId, bool serverless) { |
| 116 | + databaseState.DatabaseId = (serverless ? TStringBuilder() << pathId.OwnerId << ":" << pathId.LocalPathId << ":" : TStringBuilder()) << database; |
| 117 | + databaseState.Serverless = serverless; |
| 118 | + } |
| 119 | + |
| 120 | + void UpdateSubscribersInfo(const TString& database, const TDatabaseState& databaseState, Ydb::StatusIds::StatusCode status, NYql::TIssues issues = {}) { |
| 121 | + for (const auto& subscriber : databaseState.Subscribers) { |
| 122 | + SendSubscriberInfo(database, subscriber, databaseState, status, issues); |
| 123 | + } |
| 124 | + } |
| 125 | + |
| 126 | + void SendSubscriberInfo(const TString& database, TActorId subscriber, const TDatabaseState& databaseState, Ydb::StatusIds::StatusCode status, NYql::TIssues issues = {}) { |
| 127 | + if (status == Ydb::StatusIds::SUCCESS || status == Ydb::StatusIds::UNSUPPORTED) { |
| 128 | + Send(subscriber, new TEvKqp::TEvUpdateDatabaseInfo(database, databaseState.DatabaseId, databaseState.Serverless)); |
| 129 | + } else { |
| 130 | + NYql::TIssue rootIssue(TStringBuilder() << "Failed to describe database" << database); |
| 131 | + for (const auto& issue : issues) { |
| 132 | + rootIssue.AddSubIssue(MakeIntrusive<NYql::TIssue>(issue)); |
| 133 | + } |
| 134 | + Send(subscriber, new TEvKqp::TEvUpdateDatabaseInfo(database, status, {rootIssue})); |
| 135 | + } |
| 136 | + } |
| 137 | + |
| 138 | +private: |
| 139 | + std::unordered_map<TString, TDatabaseState> Subscriptions; |
| 140 | + std::unordered_map<ui32, TString> WatchDatabases; |
| 141 | + ui32 WatchKey = 0; |
| 142 | +}; |
| 143 | + |
| 144 | +} // anonymous namespace |
| 145 | + |
| 146 | +void TDatabasesCache::CreateDatabaseSubscriberActor(TActorContext actorContext) { |
| 147 | + SubscriberActor = actorContext.Register(new TDatabaseSubscriberActor()); |
| 148 | +} |
| 149 | + |
| 150 | +} // namespace NKikimr::NKqp |
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