Replace old named collections code for mongo

src/Storages/ExternalDataSourceConfiguration.h

@@ -46,12 +46,6 @@ struct StorageMySQLConfiguration : ExternalDataSourceConfiguration
     String on_duplicate_clause;
 };
 
-struct StorageMongoDBConfiguration : ExternalDataSourceConfiguration
-{
-    String options;
-};
-
-
 using StorageSpecificArgs = std::vector<std::pair<String, ASTPtr>>;
 
 struct ExternalDataSourceInfo

src/Storages/StorageMongoDB.cpp

@@ -2,6 +2,7 @@
 #include <Storages/StorageMongoDBSocketFactory.h>
 #include <Storages/StorageFactory.h>
 #include <Storages/checkAndGetLiteralArgument.h>
+#include <Storages/NamedCollectionsHelpers.h>
 
 #include <Poco/MongoDB/Connection.h>
 #include <Poco/MongoDB/Cursor.h>
@@ -11,6 +12,7 @@
 #include <Core/Settings.h>
 #include <Interpreters/Context.h>
 #include <Common/parseAddress.h>
+#include <Common/NamedCollections/NamedCollections.h>
 #include <IO/Operators.h>
 #include <Parsers/ASTLiteral.h>
 #include <QueryPipeline/Pipe.h>
@@ -27,6 +29,19 @@ namespace ErrorCodes
     extern const int BAD_ARGUMENTS;
 }
 
+static const std::unordered_set<std::string_view> required_configuration_keys = {
+    "host",
+    "port",
+    "username",
+    "passowrd",
+    "database",
+    "collection",
+    "table",
+};
+static const std::unordered_set<std::string_view> optional_configuration_keys = {
+    "options",
+};
+
 StorageMongoDB::StorageMongoDB(
     const StorageID & table_id_,
     const std::string & host_,
@@ -172,24 +187,21 @@ SinkToStoragePtr StorageMongoDB::write(const ASTPtr & /* query */, const Storage
     return std::make_shared<StorageMongoDBSink>(collection_name, database_name, metadata_snapshot, connection);
 }
 
-StorageMongoDBConfiguration StorageMongoDB::getConfiguration(ASTs engine_args, ContextPtr context)
+StorageMongoDB::Configuration StorageMongoDB::getConfiguration(ASTs engine_args, ContextPtr context)
 {
-    StorageMongoDBConfiguration configuration;
+    Configuration configuration;
-    if (auto named_collection = getExternalDataSourceConfiguration(engine_args, context))
-    {
-        auto [common_configuration, storage_specific_args, _] = named_collection.value();
-        configuration.set(common_configuration);
 
-        for (const auto & [arg_name, arg_value] : storage_specific_args)
+    if (auto named_collection = tryGetNamedCollectionWithOverrides(engine_args))
     {
-            if (arg_name == "options")
+        validateNamedCollection(*named_collection, required_configuration_keys, optional_configuration_keys);
-                configuration.options = checkAndGetLiteralArgument<String>(arg_value, "options");
+
-            else
+        configuration.host = named_collection->get<String>("host");
-                throw Exception(ErrorCodes::BAD_ARGUMENTS,
+        configuration.port = static_cast<UInt16>(named_collection->get<UInt64>("port"));
-                        "Unexpected key-value argument."
+        configuration.username = named_collection->get<String>("username");
-                        "Got: {}, but expected one of:"
+        configuration.password = named_collection->get<String>("password");
-                        "host, port, username, password, database, table, options.", arg_name);
+        configuration.database = named_collection->get<String>("database");
-        }
+        configuration.table = named_collection->getOrDefault<String>("collection", named_collection->get<String>("table"));
+        configuration.options = named_collection->getOrDefault<String>("options", "");
     }
     else
     {

src/Storages/StorageMongoDB.h

@@ -44,7 +44,18 @@ public:
         const StorageMetadataPtr & /*metadata_snapshot*/,
         ContextPtr context) override;
 
-    static StorageMongoDBConfiguration getConfiguration(ASTs engine_args, ContextPtr context);
+    struct Configuration
+    {
+        std::string host;
+        UInt16 port;
+        std::string username;
+        std::string password;
+        std::string database;
+        std::string table;
+        std::string options;
+    };
+
+    static Configuration getConfiguration(ASTs engine_args, ContextPtr context);
 
 private:
     void connectIfNotConnected();

src/Storages/StorageS3.cpp

@@ -80,7 +80,7 @@ static const String PARTITION_ID_WILDCARD = "{_partition_id}";
 static const std::unordered_set<std::string_view> required_configuration_keys = {
     "url",
 };
-static std::unordered_set<std::string_view> optional_configuration_keys = {
+static const std::unordered_set<std::string_view> optional_configuration_keys = {
     "format",
     "compression",
     "compression_method",

src/TableFunctions/TableFunctionMongoDB.h

@@ -24,7 +24,7 @@ private:
     ColumnsDescription getActualTableStructure(ContextPtr context) const override;
     void parseArguments(const ASTPtr & ast_function, ContextPtr context) override;
 
-    std::optional<StorageMongoDBConfiguration> configuration;
+    std::optional<StorageMongoDB::Configuration> configuration;
     String structure;
 };