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#include "raw_client.h"
#include <yt/cpp/mapreduce/client/client.h>
#include <yt/cpp/mapreduce/client/init.h>
#include <yt/cpp/mapreduce/common/retry_lib.h>
#include <yt/cpp/mapreduce/interface/client_method_options.h>
#include <yt/cpp/mapreduce/interface/logging/yt_log.h>
#include <yt/cpp/mapreduce/interface/tvm.h>
#include <yt/yt/client/api/rpc_proxy/config.h>
#include <yt/yt/client/api/rpc_proxy/connection.h>
namespace NYT::NDetail {
////////////////////////////////////////////////////////////////////////////////
struct TConnectionCacheKey
{
public:
TMaybe<TString> JobProxySocketPath;
TString ClusterUrl;
TMaybe<TString> RpcProxyRole;
TMaybe<TString> ProxyAddress;
// N.B. we want to compute hash of this struct, so we use sorted map.
TMap<TString, TString> ProxyUrlAliasingRules;
public:
TConnectionCacheKey() = default;
TConnectionCacheKey(const TClientContext& context)
: JobProxySocketPath(context.JobProxySocketPath)
, ClusterUrl(context.ServerName)
, RpcProxyRole(context.RpcProxyRole)
, ProxyAddress(context.ProxyAddress)
, ProxyUrlAliasingRules(context.Config->ProxyUrlAliasingRules.begin(), context.Config->ProxyUrlAliasingRules.end())
{ }
bool operator==(const TConnectionCacheKey& other) const = default;
};
////////////////////////////////////////////////////////////////////////////////
} // namespace NYT::NDetail
template <>
struct THash<NYT::NDetail::TConnectionCacheKey>
{
size_t operator()(const NYT::NDetail::TConnectionCacheKey& key) const
{
using NYT::HashCombine;
size_t result = 0;
HashCombine(result, key.JobProxySocketPath);
HashCombine(result, key.ClusterUrl);
HashCombine(result, key.RpcProxyRole);
HashCombine(result, key.ProxyAddress);
for (const auto& [k, v] : key.ProxyUrlAliasingRules) {
HashCombine(result, k);
HashCombine(result, v);
}
return result;
}
};
namespace NYT {
////////////////////////////////////////////////////////////////////////////////
namespace NDetail {
////////////////////////////////////////////////////////////////////////////////
NApi::IConnectionPtr GetOrCreateConnection(const TConnectionCacheKey& key)
{
static TMutex lock;
static THashMap<TConnectionCacheKey, TWeakPtr<NApi::IConnection>> cache;
static size_t maxCacheSize = 32;
auto g = Guard(lock);
auto it = cache.find(key);
if (it != cache.end()) {
auto connection = it->second.Lock();
if (connection) {
return connection;
}
}
auto connectionConfig = New<NApi::NRpcProxy::TConnectionConfig>();
connectionConfig->SetDefaults();
if (key.JobProxySocketPath) {
connectionConfig->ProxyUnixDomainSocket = *key.JobProxySocketPath;
connectionConfig->EnableProxyDiscovery = false;
} else {
connectionConfig->ClusterUrl = key.ClusterUrl;
}
if (key.RpcProxyRole) {
connectionConfig->ProxyRole = *key.RpcProxyRole;
}
if (key.ProxyAddress) {
connectionConfig->ProxyAddresses = {*key.ProxyAddress};
}
for (const auto& [clusterName, url] : key.ProxyUrlAliasingRules) {
connectionConfig->ProxyUrlAliasingRules.emplace(clusterName, url);
}
auto connection = NApi::NRpcProxy::CreateConnection(connectionConfig);
if (it != cache.end()) {
it->second = connection;
} else if (cache.size() < maxCacheSize) {
// N.B. once cache size exceeds limit we disable caching.
// We believe such cases are rare but if it is the case we don't want to leak memory
// (memory is leaked since we never clear the cache).
cache.emplace(key, connection);
} else {
YT_LOG_WARNING("Cannot cache IConnection since connection cache reached maximum size");
}
return connection;
}
NYT::NApi::IClientPtr CreateApiClient(const TClientContext& context)
{
auto key = TConnectionCacheKey(context);
auto connection = GetOrCreateConnection(key);
NApi::TClientOptions clientOptions;
clientOptions.Token = context.Token;
if (context.ServiceTicketAuth) {
clientOptions.ServiceTicketAuth = context.ServiceTicketAuth->Ptr;
}
if (context.ImpersonationUser) {
clientOptions.User = *context.ImpersonationUser;
}
if (context.JobProxySocketPath) {
clientOptions.MultiproxyTargetCluster = context.MultiproxyTargetCluster;
}
return connection->CreateClient(clientOptions);
}
////////////////////////////////////////////////////////////////////////////////
} // namespace NDetail
////////////////////////////////////////////////////////////////////////////////
IClientPtr CreateRpcClient(
const TString& serverName,
const TCreateClientOptions& options)
{
auto context = NDetail::CreateClientContext(serverName, options);
auto globalTxId = GetGuid(context.Config->GlobalTxId);
auto retryConfigProvider = options.RetryConfigProvider_;
if (!retryConfigProvider) {
retryConfigProvider = CreateDefaultRetryConfigProvider();
}
NDetail::EnsureInitialized();
auto rawClient = MakeIntrusive<NDetail::TRpcRawClient>(
NDetail::CreateApiClient(context),
context.Config);
return new NDetail::TClient(
std::move(rawClient),
context,
globalTxId,
CreateDefaultClientRetryPolicy(retryConfigProvider, context.Config));
}
////////////////////////////////////////////////////////////////////////////////
} // namespace NYT
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