vbatts/llama.cpp
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Routes for hot-reloading and reading current vector composition

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trollkotze 2024-03-26 18:57:06 +01:00
parent bd9f6b9dcf
commit 7b9e8726d1
2 changed files with 75 additions and 0 deletions
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70
examples/server/server.cpp
View file

@ -3183,6 +3183,74 @@ int main(int argc, char ** argv) {
res.status = 200; // HTTP OK
};
const auto handle_get_control_vectors = [&ctx_server](const httplib::Request & req, httplib::Response & res) {
json vectors = json::array();
for (const auto & vec : ctx_server.params.control_vectors) {
vectors.push_back(json {
{ "fname", vec.fname },
{ "strength", vec.strength }
});
}
json data = {
{ "vectors", vectors },
{ "layer_start", ctx_server.params.control_vector_layer_start },
{ "layer_end", ctx_server.params.control_vector_layer_end }
};
res.set_content(data.dump(), "application/json; charset=utf-8");
};
const auto handle_set_control_vectors = [&ctx_server, &res_error, &handle_get_control_vectors](const httplib::Request & req, httplib::Response & res) {
res.set_header("Access-Control-Allow-Origin", req.get_header_value("Origin"));
json data = json::parse(req.body);
std::vector<llama_control_vector_load_info> vec_params;
if (data.contains("vectors") && data["vectors"].is_array()) {
for (const auto &item : data["vectors"]) {
auto v = item.get<llama_control_vector_load_info>();
std::cout << "Add vector: " << v.fname << " " << v.strength << "\n";
vec_params.push_back(v);
}
} else {
std::cerr << "No vectors passed\n";
res_error(res, format_error_response("No vectors passed", ERROR_TYPE_SERVER));
return;
}
const auto cvec = llama_control_vector_load(vec_params);
if (cvec.n_embd == -1) {
std::cerr << "Could not load control vector\n";
res_error(res, format_error_response("Could not load control vector", ERROR_TYPE_SERVER));
return;
}
if (ctx_server.params.control_vector_layer_start <= 0) {
ctx_server.params.control_vector_layer_start = 1;
}
if (ctx_server.params.control_vector_layer_end <= 0){
ctx_server.params.control_vector_layer_end = llama_n_layer(ctx_server.model);
}
int err = llama_control_vector_apply(ctx_server.ctx,
cvec.data.data(),
cvec.data.size(),
cvec.n_embd,
ctx_server.params.control_vector_layer_start,
ctx_server.params.control_vector_layer_end);
if (err) {
std::cerr << "Could not apply control vector\n";
res_error(res, format_error_response("Could not apply control vector", ERROR_TYPE_SERVER));
return;
}
ctx_server.params.control_vectors.clear();
for (auto v : vec_params) {
std::cout << "set vector param: " << v.fname << " " << v.strength << "\n";
ctx_server.params.control_vectors.push_back(v);
}
handle_get_control_vectors(req, res);
};
const auto handle_props = [&ctx_server](const httplib::Request & req, httplib::Response & res) {
res.set_header("Access-Control-Allow-Origin", req.get_header_value("Origin"));
json data = {
@ -3534,6 +3602,8 @@ int main(int argc, char ** argv) {
svr->Get ("/metrics", handle_metrics);
svr->Get ("/props", handle_props);
svr->Get ("/v1/models", handle_models);
svr->Get ("/control-vectors", handle_get_control_vectors);
svr->Post("/control-vectors", handle_set_control_vectors);
svr->Post("/completion", handle_completions); // legacy
svr->Post("/completions", handle_completions);
svr->Post("/v1/completions", handle_completions);

5
examples/server/utils.hpp
View file

@ -615,3 +615,8 @@ static json format_error_response(const std::string & message, const enum error_
{"type", type_str},
};
}
void from_json(const json& j, llama_control_vector_load_info& l) {
j.at("strength").get_to(l.strength);
j.at("fname").get_to(l.fname);
}