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server : fallback to default if client param is null (#2688)

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* server : fallback to default if client param is null

* server : do not overwrite 404 if status is 500 from exception_handler
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Jhen-Jie Hong 2023-08-22 08:32:00 +08:00 committed by GitHub
parent 930523c8e1
commit 226255b44e
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1 changed files with 33 additions and 24 deletions
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examples/server/server.cpp
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@ -1056,33 +1056,42 @@ static json format_tokenizer_response(const std::vector<llama_token> &tokens)
{"tokens", tokens}}; {"tokens", tokens}};
} }
template <typename T>
static T json_value(const json &body, const std::string &key, const T &default_value)
{
// Fallback null to default value
return body.contains(key) && !body.at(key).is_null()
? body.value(key, default_value)
: default_value;
}
static void parse_options_completion(const json &body, llama_server_context &llama) static void parse_options_completion(const json &body, llama_server_context &llama)
{ {
gpt_params default_params; gpt_params default_params;
llama.stream = body.value("stream", false); llama.stream = json_value(body, "stream", false);
llama.params.n_predict = body.value("n_predict", default_params.n_predict); llama.params.n_predict = json_value(body, "n_predict", default_params.n_predict);
llama.params.top_k = body.value("top_k", default_params.top_k); llama.params.top_k = json_value(body, "top_k", default_params.top_k);
llama.params.top_p = body.value("top_p", default_params.top_p); llama.params.top_p = json_value(body, "top_p", default_params.top_p);
llama.params.tfs_z = body.value("tfs_z", default_params.tfs_z); llama.params.tfs_z = json_value(body, "tfs_z", default_params.tfs_z);
llama.params.typical_p = body.value("typical_p", default_params.typical_p); llama.params.typical_p = json_value(body, "typical_p", default_params.typical_p);
llama.params.repeat_last_n = body.value("repeat_last_n", default_params.repeat_last_n); llama.params.repeat_last_n = json_value(body, "repeat_last_n", default_params.repeat_last_n);
llama.params.temp = body.value("temperature", default_params.temp); llama.params.temp = json_value(body, "temperature", default_params.temp);
llama.params.repeat_penalty = body.value("repeat_penalty", default_params.repeat_penalty); llama.params.repeat_penalty = json_value(body, "repeat_penalty", default_params.repeat_penalty);
llama.params.presence_penalty = body.value("presence_penalty", default_params.presence_penalty); llama.params.presence_penalty = json_value(body, "presence_penalty", default_params.presence_penalty);
llama.params.frequency_penalty = body.value("frequency_penalty", default_params.frequency_penalty); llama.params.frequency_penalty = json_value(body, "frequency_penalty", default_params.frequency_penalty);
llama.params.mirostat = body.value("mirostat", default_params.mirostat); llama.params.mirostat = json_value(body, "mirostat", default_params.mirostat);
llama.params.mirostat_tau = body.value("mirostat_tau", default_params.mirostat_tau); llama.params.mirostat_tau = json_value(body, "mirostat_tau", default_params.mirostat_tau);
llama.params.mirostat_eta = body.value("mirostat_eta", default_params.mirostat_eta); llama.params.mirostat_eta = json_value(body, "mirostat_eta", default_params.mirostat_eta);
llama.params.penalize_nl = body.value("penalize_nl", default_params.penalize_nl); llama.params.penalize_nl = json_value(body, "penalize_nl", default_params.penalize_nl);
llama.params.n_keep = body.value("n_keep", default_params.n_keep); llama.params.n_keep = json_value(body, "n_keep", default_params.n_keep);
llama.params.seed = body.value("seed", default_params.seed); llama.params.seed = json_value(body, "seed", default_params.seed);
llama.params.prompt = body.value("prompt", default_params.prompt); llama.params.prompt = json_value(body, "prompt", default_params.prompt);
llama.params.grammar = body.value("grammar", default_params.grammar); llama.params.grammar = json_value(body, "grammar", default_params.grammar);
llama.params.n_probs = body.value("n_probs", default_params.n_probs); llama.params.n_probs = json_value(body, "n_probs", default_params.n_probs);
llama.params.logit_bias.clear(); llama.params.logit_bias.clear();
if (body.value("ignore_eos", false)) if (json_value(body, "ignore_eos", false))
{ {
llama.params.logit_bias[llama_token_eos(llama.ctx)] = -INFINITY; llama.params.logit_bias[llama_token_eos(llama.ctx)] = -INFINITY;
} }
@ -1337,7 +1346,7 @@ int main(int argc, char **argv)
auto lock = llama.lock(); auto lock = llama.lock();
const json body = json::parse(req.body); const json body = json::parse(req.body);
const std::string content = body.value("content", ""); const std::string content = json_value<std::string>(body, "content", "");
const std::vector<llama_token> tokens = llama_tokenize(llama.ctx, content, false); const std::vector<llama_token> tokens = llama_tokenize(llama.ctx, content, false);
const json data = format_tokenizer_response(tokens); const json data = format_tokenizer_response(tokens);
return res.set_content(data.dump(), "application/json"); }); return res.set_content(data.dump(), "application/json"); });
@ -1350,7 +1359,7 @@ int main(int argc, char **argv)
llama.rewind(); llama.rewind();
llama_reset_timings(llama.ctx); llama_reset_timings(llama.ctx);
llama.params.prompt = body.value("content", ""); llama.params.prompt = json_value<std::string>(body, "content", "");
llama.params.n_predict = 0; llama.params.n_predict = 0;
llama.loadPrompt(); llama.loadPrompt();
llama.beginCompletion(); llama.beginCompletion();
@ -1379,7 +1388,7 @@ int main(int argc, char **argv)
{ {
if (res.status == 400) { if (res.status == 400) {
res.set_content("Invalid request", "text/plain"); res.set_content("Invalid request", "text/plain");
} else { } else if (res.status != 500) {
res.set_content("File Not Found", "text/plain"); res.set_content("File Not Found", "text/plain");
res.status = 404; res.status = 404;
} }); } });