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More show commad for http (#1939)
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### What problem does this PR solve?

- add show and set command for session variables for http
- fix show global variables bug 

Issue link:#1937

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)
- [x] New Feature (non-breaking change which adds functionality)
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@Ami11111
Ami11111 authored Sep 29, 2024
1 parent e4a128a commit 4834a90
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Showing 3 changed files with 150 additions and 7 deletions.
2 changes: 1 addition & 1 deletion python/infinity_http.py
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Original file line number Diff line number Diff line change
Expand Up @@ -533,7 +533,7 @@ def add_columns(self, columns_definition = {}):
tmp[param_name.lower()] = columns_definition[col][param_name]
fields.append(tmp)
d = self.set_up_data([], {"fields": fields})
r = self.request(url, "put", h, d)
r = self.request(url, "post", h, d)
return self.get_database_result(r)

def drop_columns(self, column_name: list[str] | str):
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3 changes: 2 additions & 1 deletion src/executor/operator/physical_show.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -4520,7 +4520,8 @@ void PhysicalShow::ExecuteShowGlobalVariables(QueryContext *query_context, ShowO
break;
}
case GlobalVariable::kFollowerNum: {
if(InfinityContext::instance().cluster_manager()->ThisNode()->node_role_ == NodeRole::kLeader) {
if(InfinityContext::instance().IsClusterRole()
&& InfinityContext::instance().cluster_manager()->ThisNode()->node_role_ == NodeRole::kLeader) {
{
// option name
Value value = Value::MakeVarchar(var_name);
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152 changes: 147 additions & 5 deletions src/network/http_server.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -3095,6 +3095,146 @@ class SetGlobalVariableHandler final : public HttpRequestHandler {
}
};

class ShowSessionVariablesHandler final : public HttpRequestHandler {
public:
SharedPtr<OutgoingResponse> handle(const SharedPtr<IncomingRequest> &request) final {
auto infinity = Infinity::RemoteConnect();
DeferFn defer_fn([&]() { infinity->RemoteDisconnect(); });

auto result = infinity->ShowVariables(SetScope::kSession);

nlohmann::json json_response;
HTTPStatus http_status;

if (result.IsOk()) {
json_response["error_code"] = 0;
DataBlock *data_block = result.result_table_->GetDataBlockById(0).get(); // Assume the variables output data only included in one data block
auto row_count = data_block->row_count();
for (int row = 0; row < row_count; ++row) {
// variable name
Value name_value = data_block->GetValue(0, row);
const String& config_name = name_value.ToString();
// variable value
Value value = data_block->GetValue(1, row);
const String &config_value = value.ToString();
json_response[config_name] = config_value;
}
http_status = HTTPStatus::CODE_200;
} else {
json_response["error_code"] = result.ErrorCode();
json_response["error_message"] = result.ErrorMsg();
http_status = HTTPStatus::CODE_500;
}
return ResponseFactory::createResponse(http_status, json_response.dump());
}
};

class ShowSessionVariableHandler final : public HttpRequestHandler {
public:
SharedPtr<OutgoingResponse> handle(const SharedPtr<IncomingRequest> &request) final {
auto infinity = Infinity::RemoteConnect();
DeferFn defer_fn([&]() { infinity->RemoteDisconnect(); });

auto variable_name = request->getPathVariable("variable_name");
auto result = infinity->ShowVariable(variable_name, SetScope::kSession);

nlohmann::json json_response;
HTTPStatus http_status;

if (result.IsOk()) {
json_response["error_code"] = 0;
DataBlock *data_block = result.result_table_->GetDataBlockById(0).get();
Value value = data_block->GetValue(0, 0);
const String &variable_value = value.ToString();
json_response[variable_name] = variable_value;

http_status = HTTPStatus::CODE_200;
} else {
json_response["error_code"] = result.ErrorCode();
json_response["error_message"] = result.ErrorMsg();
http_status = HTTPStatus::CODE_500;
}
return ResponseFactory::createResponse(http_status, json_response.dump());
}
};

class SetSessionVariableHandler final : public HttpRequestHandler {
public:
SharedPtr<OutgoingResponse> handle(const SharedPtr<IncomingRequest> &request) final {
auto infinity = Infinity::RemoteConnect();
DeferFn defer_fn([&]() { infinity->RemoteDisconnect(); });

nlohmann::json json_response;
HTTPStatus http_status;
QueryResult result;

String data_body = request->readBodyToString();
try {

nlohmann::json http_body_json = nlohmann::json::parse(data_body);
if(http_body_json.size() != 1) {
json_response["error_code"] = 3076;
json_response["error_message"] = "No variable will be set";
http_status = HTTPStatus::CODE_500;
return ResponseFactory::createResponse(http_status, json_response.dump());
}

for (const auto &set_variable : http_body_json.items()) {
String var_name = set_variable.key();
const auto &var_value = set_variable.value();
switch (var_value.type()) {
case nlohmann::json::value_t::boolean: {
bool bool_value = var_value.template get<bool>();
result = infinity->SetVariableOrConfig(var_name, bool_value, SetScope::kSession);
break;
}
case nlohmann::json::value_t::number_integer: {
i64 integer_value = var_value.template get<i64>();
result = infinity->SetVariableOrConfig(var_name, integer_value, SetScope::kSession);
break;
}
case nlohmann::json::value_t::number_unsigned: {
i64 integer_value = var_value.template get<u64>();
result = infinity->SetVariableOrConfig(var_name, integer_value, SetScope::kSession);
break;
}
case nlohmann::json::value_t::number_float: {
f64 double_value = var_value.template get<f64>();
result = infinity->SetVariableOrConfig(var_name, double_value, SetScope::kSession);
break;
}
case nlohmann::json::value_t::string: {
String str_value = var_value.template get<std::string>();
result = infinity->SetVariableOrConfig(var_name, str_value, SetScope::kSession);
break;
}
case nlohmann::json::value_t::array:
case nlohmann::json::value_t::object:
case nlohmann::json::value_t::binary:
case nlohmann::json::value_t::null:
case nlohmann::json::value_t::discarded: {
json_response["error_code"] = ErrorCode::kInvalidExpression;
json_response["error_message"] = fmt::format("Invalid set variable expression");
return ResponseFactory::createResponse(http_status, json_response.dump());
}
}
}
} catch (nlohmann::json::exception &e) {
json_response["error_code"] = ErrorCode::kInvalidJsonFormat;
json_response["error_message"] = e.what();
}
if (result.IsOk()) {
json_response["error_code"] = 0;
http_status = HTTPStatus::CODE_200;
} else {
json_response["error_code"] = result.ErrorCode();
json_response["error_message"] = result.ErrorMsg();
http_status = HTTPStatus::CODE_500;
}
return ResponseFactory::createResponse(http_status, json_response.dump());
}
};

class SetConfigHandler final : public HttpRequestHandler {
public:
SharedPtr<OutgoingResponse> handle(const SharedPtr<IncomingRequest> &request) final {
Expand Down Expand Up @@ -3220,7 +3360,7 @@ void HTTPServer::Start(const String& ip_address, u16 port) {
router->route("PUT", "/databases/{database_name}/tables/{table_name}/indexes/{index_name}", MakeShared<OptimizeIndexHandler>());

// alter
router->route("PUT", "/databases/{database_name}/tables/{table_name}/columns", MakeShared<AddColumnsHandler>());
router->route("POST", "/databases/{database_name}/tables/{table_name}/columns", MakeShared<AddColumnsHandler>());
router->route("DELETE", "/databases/{database_name}/tables/{table_name}/columns", MakeShared<DropColumnsHandler>());

// segment
Expand All @@ -3243,10 +3383,12 @@ void HTTPServer::Start(const String& ip_address, u16 port) {
router->route("POST", "/configs", MakeShared<SetConfigHandler>());

// variable
router->route("GET", "/variables", MakeShared<ShowGlobalVariablesHandler>());
router->route("GET", "/variables/{variable_name}", MakeShared<ShowGlobalVariableHandler>());

router->route("POST", "/variables", MakeShared<SetGlobalVariableHandler>());
router->route("GET", "/variables/global", MakeShared<ShowGlobalVariablesHandler>());
router->route("GET", "/variables/global/{variable_name}", MakeShared<ShowGlobalVariableHandler>());
router->route("SET", "/variables/global", MakeShared<SetGlobalVariableHandler>());
router->route("GET", "/variables/session", MakeShared<ShowSessionVariablesHandler>());
router->route("GET", "/variables/session/{variable_name}", MakeShared<ShowSessionVariableHandler>());
router->route("SET", "/variables/session", MakeShared<SetSessionVariableHandler>());

SharedPtr<HttpConnectionProvider> connection_provider = HttpConnectionProvider::createShared({ip_address, port, WebAddress::IP_4});
SharedPtr<HttpConnectionHandler> connection_handler = HttpConnectionHandler::createShared(router);
Expand Down

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