YDB FQ: Support MDB MySQL in DatabaseResolver

ydb/core/fq/libs/actors/database_resolver.cpp

@@ -459,6 +459,54 @@ class TDatabaseResolver: public TActor<TDatabaseResolver>
 
             return TDatabaseDescription{"", endpoint.first, endpoint.second, "", useTls};
         };
+        Parsers[NYql::EDatabaseType::MySQL] = [](
+            NJson::TJsonValue& databaseInfo,
+            const NYql::IMdbEndpointGenerator::TPtr& mdbEndpointGenerator,
+            bool useTls,
+            NConnector::NApi::EProtocol protocol
+            ) {
+            NYql::IMdbEndpointGenerator::TEndpoint endpoint;
+            TVector<TString> aliveHosts;
+
+            const auto& hostsArray = databaseInfo.GetMap().at("hosts").GetArraySafe();
+
+            for (const auto& host : hostsArray) {
+                const auto& hostMap = host.GetMap();
+
+            if (!hostMap.contains("services")) {
+                // indicates that cluster is down
+                continue;
+            }
+
+            // check if all services of a particular host are alive
+            const bool alive = std::all_of(
+                hostMap.at("services").GetArraySafe().begin(),
+                hostMap.at("services").GetArraySafe().end(),
+                [](const auto& service) {
+                    return service["health"].GetString() == "ALIVE";
+                }
+            );
+
+            if (alive) {
+                aliveHosts.push_back(host["name"].GetString());
+            }
+        }
+
+        if (aliveHosts.empty()) {
+            ythrow TCodeLineException(TIssuesIds::INTERNAL_ERROR) << "No ALIVE MySQL hosts found";
+        }
+
+        NYql::IMdbEndpointGenerator::TParams params = {
+            .DatabaseType = NYql::EDatabaseType::MySQL,
+            .MdbHost = aliveHosts[std::rand() % static_cast<int>(aliveHosts.size())],
+            .UseTls = useTls,
+            .Protocol = protocol,
+        };
+
+        endpoint = mdbEndpointGenerator->ToEndpoint(params);
+
+        return TDatabaseDescription{"", endpoint.first, endpoint.second, "", useTls};
+        };
     }
 
     static constexpr char ActorName[] = "YQ_DATABASE_RESOLVER";
@@ -538,7 +586,7 @@ class TDatabaseResolver: public TActor<TDatabaseResolver>
                     url = TUrlBuilder(ev->Get()->YdbMvpEndpoint + "/database")
                             .AddUrlParam("databaseId", databaseId)
                             .Build();
-                } else if (IsIn({NYql::EDatabaseType::ClickHouse, NYql::EDatabaseType::PostgreSQL}, databaseType)) {
+                } else if (IsIn({NYql::EDatabaseType::ClickHouse, NYql::EDatabaseType::PostgreSQL, NYql::EDatabaseType::MySQL}, databaseType)) {
                     YQL_ENSURE(ev->Get()->MdbGateway, "empty MDB Gateway");
                     url = TUrlBuilder(
                         ev->Get()->MdbGateway + "/managed-" + NYql::DatabaseTypeLowercase(databaseType) + "/v1/clusters/")

ydb/core/fq/libs/actors/ut/database_resolver_ut.cpp

@@ -537,6 +537,79 @@ Y_UNIT_TEST_SUITE(TDatabaseResolverTests) {
                 NYql::TDatabaseResolverResponse::TDatabaseDescription{},
                 issues);
         }
+    Y_UNIT_TEST(MySQL) {
+        Test(
+            NYql::EDatabaseType::MySQL,
+            NYql::NConnector::NApi::EProtocol::NATIVE,
+            "https://mdb.api.cloud.yandex.net:443/managed-mysql/v1/clusters/etn021us5r9rhld1vgbh/hosts",
+            "200",
+            R"({
+                "hosts": [
+                {
+                "services": [
+                    {
+                    "type": "POOLER",
+                    "health": "ALIVE"
+                    },
+                    {
+                    "type": "MYSQL",
+                    "health": "ALIVE"
+                    }
+                ],
+                "name": "rc1b-eyt6dtobu96rwydq.mdb.yandexcloud.net",
+                "clusterId": "c9qb2bjghs8onbncpamk",
+                "zoneId": "ru-central1-b",
+                "role": "MASTER",
+                "health": "ALIVE"
+                }
+                ]
+                })",
+            NYql::TDatabaseResolverResponse::TDatabaseDescription{
+                TString{""},
+                TString{"rc1b-eyt6dtobu96rwydq.db.yandex.net"},
+                3306,
+                TString(""),
+                true
+                },
+                {}
+            );
+    }
+
+    Y_UNIT_TEST(MySQL_PermissionDenied) {
+        NYql::TIssues issues{
+            NYql::TIssue(
+                TStringBuilder{} << MakeErrorPrefix(
+                    "mdb.api.cloud.yandex.net:443",
+                    "/managed-mysql/v1/clusters/etn021us5r9rhld1vgbh/hosts",
+                    "etn021us5r9rhld1vgbh",
+                    NYql::EDatabaseType::MySQL
+                ) << NoPermissionStr
+            )
+        };
+
+        Test(
+            NYql::EDatabaseType::MySQL,
+            NYql::NConnector::NApi::EProtocol::NATIVE,
+            "https://mdb.api.cloud.yandex.net:443/managed-mysql/v1/clusters/etn021us5r9rhld1vgbh/hosts",
+            "403",
+            R"(
+                {
+                    "code": 7,
+                    "message": "Permission denied",
+                    "details": [
+                        {
+                            "@type": "type.googleapis.com/google.rpc.RequestInfo",
+                            "requestId": "a943c092-d596-4e0e-ae7b-1f67f9d8164e"
+                        }
+                    ]
+                }
+            )",
+            NYql::TDatabaseResolverResponse::TDatabaseDescription{
+                },
+                issues
+            );
+    }
+
 
     Y_UNIT_TEST(DataStreams_PermissionDenied) {
         NYql::TIssues issues{

ydb/core/fq/libs/db_id_async_resolver_impl/mdb_endpoint_generator.cpp

@@ -18,6 +18,8 @@ namespace NFq {
 
     constexpr ui32 GREENPLUM_PORT = 6432;
 
+    constexpr ui32 MYSQL_PORT = 3306;
+
     // TMdbEndpointGeneratorLegacy implements behavior required by YQL legacy ClickHouse provider
     class TMdbEndpointGeneratorLegacy: public NYql::IMdbEndpointGenerator {
         TEndpoint ToEndpoint(const NYql::IMdbEndpointGenerator::TParams& params) const override {
@@ -76,13 +78,21 @@ namespace NFq {
                             ythrow yexception() << "Unexpected protocol for PostgreSQL " << NYql::NConnector::NApi::EProtocol_Name(params.Protocol);
                     }
                 case NYql::EDatabaseType::Greenplum:
-                    // https://cloud.yandex.ru/docs/managed-postgresql/operations/connect
+                    // https://cloud.yandex.ru/docs/managed-greenplum/operations/connect
                     switch (params.Protocol) {
                         case NYql::NConnector::NApi::EProtocol::NATIVE:
                             return TEndpoint(fixedHost, GREENPLUM_PORT);
                         default:
                             ythrow yexception() << "Unexpected protocol for Greenplum: " << NYql::NConnector::NApi::EProtocol_Name(params.Protocol);
                     }
+                case NYql::EDatabaseType::MySQL:
+                    // https://cloud.yandex.ru/docs/managed-mysql/operations/connect
+                    switch (params.Protocol) {
+                        case NYql::NConnector::NApi::EProtocol::NATIVE:
+                            return TEndpoint(fixedHost, MYSQL_PORT);
+                        default:
+                            ythrow yexception() << "Unexpected protocol for MySQL: " << NYql::NConnector::NApi::EProtocol_Name(params.Protocol);
+                    }
                 default:
                     ythrow yexception() << "Unexpected database type: " << ToString(params.DatabaseType);
             };