mirror of
https://github.com/ggerganov/llama.cpp.git
synced 2024-11-11 21:39:52 +00:00
server : refactored the task processing logic (#5065)
* server: add llama_server_queue struct * server: add llama_server_response_event * server: add comments * server: move all mutexes away from server.cpp * server: correct multitask response * server: only add back deferred tasks when one slot is available * server: fix a race condition cause by "request_completion"
This commit is contained in:
Xuan Son Nguyen
GitHub
parent
413e7b0559
commit
48c857aa10
2
Makefile
2
Makefile
@ -619,7 +619,7 @@ embedding: examples/embedding/embedding.cpp ggml.o llama.o $(C
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save-load-state: examples/save-load-state/save-load-state.cpp ggml.o llama.o $(COMMON_DEPS) $(OBJS)
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$(CXX) $(CXXFLAGS) $(filter-out %.h,$^) -o $@ $(LDFLAGS)
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server: examples/server/server.cpp examples/server/httplib.h examples/server/json.hpp examples/server/index.html.hpp examples/server/index.js.hpp examples/server/completion.js.hpp examples/llava/clip.cpp examples/llava/clip.h common/stb_image.h ggml.o llama.o $(COMMON_DEPS) grammar-parser.o $(OBJS)
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server: examples/server/server.cpp examples/server/oai.hpp examples/server/utils.hpp examples/server/httplib.h examples/server/json.hpp examples/server/index.html.hpp examples/server/index.js.hpp examples/server/completion.js.hpp examples/llava/clip.cpp examples/llava/clip.h common/stb_image.h ggml.o llama.o $(COMMON_DEPS) grammar-parser.o $(OBJS)
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$(CXX) $(CXXFLAGS) -Iexamples/server $(filter-out %.h,$(filter-out %.hpp,$^)) -o $@ $(LDFLAGS) $(LWINSOCK2) -Wno-cast-qual
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gguf: examples/gguf/gguf.cpp ggml.o $(OBJS)
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@ -1,7 +1,7 @@
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set(TARGET server)
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option(LLAMA_SERVER_VERBOSE "Build verbose logging option for Server" ON)
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include_directories(${CMAKE_CURRENT_SOURCE_DIR})
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add_executable(${TARGET} server.cpp json.hpp httplib.h)
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add_executable(${TARGET} server.cpp oai.hpp utils.hpp json.hpp httplib.h)
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install(TARGETS ${TARGET} RUNTIME)
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target_compile_definitions(${TARGET} PRIVATE
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SERVER_VERBOSE=$<BOOL:${LLAMA_SERVER_VERBOSE}>
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208
examples/server/oai.hpp
Normal file
208
examples/server/oai.hpp
Normal file
@ -0,0 +1,208 @@
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#pragma once
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#include <string>
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#include <vector>
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#include <set>
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#include <mutex>
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#include <condition_variable>
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#include <unordered_map>
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#include "json.hpp"
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#include "utils.hpp"
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#define DEFAULT_OAICOMPAT_MODEL "gpt-3.5-turbo-0613"
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using json = nlohmann::json;
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inline static json oaicompat_completion_params_parse(
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const json &body /* openai api json semantics */)
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{
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json llama_params;
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llama_params["__oaicompat"] = true;
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// Map OpenAI parameters to llama.cpp parameters
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//
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// For parameters that are defined by the OpenAI documentation (e.g.
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// temperature), we explicitly specify OpenAI's intended default; we
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// need to do that because sometimes OpenAI disagrees with llama.cpp
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//
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// https://platform.openai.com/docs/api-reference/chat/create
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llama_sampling_params default_sparams;
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llama_params["model"] = json_value(body, "model", std::string("unknown"));
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llama_params["prompt"] = format_chatml(body["messages"]); // OpenAI 'messages' to llama.cpp 'prompt'
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llama_params["cache_prompt"] = json_value(body, "cache_prompt", false);
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llama_params["temperature"] = json_value(body, "temperature", 0.0);
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llama_params["top_k"] = json_value(body, "top_k", default_sparams.top_k);
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llama_params["top_p"] = json_value(body, "top_p", 1.0);
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llama_params["n_predict"] = json_value(body, "max_tokens", -1);
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llama_params["logit_bias"] = json_value(body, "logit_bias",json::object());
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llama_params["frequency_penalty"] = json_value(body, "frequency_penalty", 0.0);
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llama_params["presence_penalty"] = json_value(body, "presence_penalty", 0.0);
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llama_params["seed"] = json_value(body, "seed", LLAMA_DEFAULT_SEED);
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llama_params["stream"] = json_value(body, "stream", false);
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llama_params["mirostat"] = json_value(body, "mirostat", default_sparams.mirostat);
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llama_params["mirostat_tau"] = json_value(body, "mirostat_tau", default_sparams.mirostat_tau);
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llama_params["mirostat_eta"] = json_value(body, "mirostat_eta", default_sparams.mirostat_eta);
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llama_params["penalize_nl"] = json_value(body, "penalize_nl", default_sparams.penalize_nl);
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llama_params["typical_p"] = json_value(body, "typical_p", default_sparams.typical_p);
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llama_params["repeat_last_n"] = json_value(body, "repeat_last_n", default_sparams.penalty_last_n);
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llama_params["ignore_eos"] = json_value(body, "ignore_eos", false);
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llama_params["tfs_z"] = json_value(body, "tfs_z", default_sparams.tfs_z);
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if (body.count("grammar") != 0) {
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llama_params["grammar"] = json_value(body, "grammar", json::object());
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}
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// Handle 'stop' field
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if (body.contains("stop") && body["stop"].is_string()) {
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llama_params["stop"] = json::array({body["stop"].get<std::string>()});
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} else {
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llama_params["stop"] = json_value(body, "stop", json::array());
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}
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// Ensure there is ChatML-specific end sequence among stop words
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llama_params["stop"].push_back("<|im_end|>");
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return llama_params;
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}
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inline static json format_final_response_oaicompat(const json &request, const task_result &response, bool streaming = false)
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{
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json result = response.result_json;
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bool stopped_word = result.count("stopped_word") != 0;
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bool stopped_eos = json_value(result, "stopped_eos", false);
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int num_tokens_predicted = json_value(result, "tokens_predicted", 0);
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int num_prompt_tokens = json_value(result, "tokens_evaluated", 0);
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std::string content = json_value(result, "content", std::string(""));
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std::string finish_reason = "length";
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if (stopped_word || stopped_eos) {
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finish_reason = "stop";
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}
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json choices =
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streaming ? json::array({json{{"finish_reason", finish_reason},
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{"index", 0},
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{"delta", json::object()}}})
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: json::array({json{{"finish_reason", finish_reason},
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{"index", 0},
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{"message", json{{"content", content},
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{"role", "assistant"}}}}});
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std::time_t t = std::time(0);
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json res =
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json{{"choices", choices},
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{"created", t},
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{"model",
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json_value(request, "model", std::string(DEFAULT_OAICOMPAT_MODEL))},
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{"object", streaming ? "chat.completion.chunk" : "chat.completion"},
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{"usage",
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json{{"completion_tokens", num_tokens_predicted},
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{"prompt_tokens", num_prompt_tokens},
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{"total_tokens", num_tokens_predicted + num_prompt_tokens}}},
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{"id", gen_chatcmplid()}};
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if (server_verbose) {
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res["__verbose"] = result;
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}
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if (result.contains("completion_probabilities")) {
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res["completion_probabilities"] = json_value(result, "completion_probabilities", json::array());
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}
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return res;
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}
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// return value is vector as there is one case where we might need to generate two responses
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inline static std::vector<json> format_partial_response_oaicompat(const task_result &response) {
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json result = response.result_json;
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if (!result.contains("model") || !result.contains("oaicompat_token_ctr")) {
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return std::vector<json>({response.result_json});
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}
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bool first = json_value(result, "oaicompat_token_ctr", 0) == 0;
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std::string modelname = json_value(result, "model", std::string(DEFAULT_OAICOMPAT_MODEL));
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bool stopped_word = json_value(result, "stopped_word", false);
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bool stopped_eos = json_value(result, "stopped_eos", false);
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bool stopped_limit = json_value(result, "stopped_limit", false);
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std::string content = json_value(result, "content", std::string(""));
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std::string finish_reason;
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if (stopped_word || stopped_eos) {
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finish_reason = "stop";
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}
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if (stopped_limit) {
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finish_reason = "length";
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}
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std::time_t t = std::time(0);
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json choices;
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if (!finish_reason.empty()) {
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choices = json::array({json{{"finish_reason", finish_reason},
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{"index", 0},
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{"delta", json::object()}}});
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} else {
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if (first) {
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if (content.empty()) {
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choices = json::array({json{{"finish_reason", nullptr},
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{"index", 0},
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{"delta", json{{"role", "assistant"}}}}});
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} else {
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// We have to send this as two updates to conform to openai behavior
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json initial_ret = json{{"choices", json::array({json{
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{"finish_reason", nullptr},
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{"index", 0},
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{"delta", json{
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{"role", "assistant"}
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}}}})},
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{"created", t},
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{"id", gen_chatcmplid()},
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{"model", modelname},
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{"object", "chat.completion.chunk"}};
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json second_ret = json{
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{"choices", json::array({json{{"finish_reason", nullptr},
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{"index", 0},
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{"delta", json{
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{"content", content}}}
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}})},
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{"created", t},
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{"id", gen_chatcmplid()},
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{"model", modelname},
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{"object", "chat.completion.chunk"}};
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return std::vector<json>({initial_ret, second_ret});
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}
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} else {
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// Some idiosyncrasy in task processing logic makes several trailing calls
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// with empty content, we ignore these at the calee site.
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if (content.empty()) {
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return std::vector<json>({json::object()});
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}
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choices = json::array({json{
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{"finish_reason", nullptr},
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{"index", 0},
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{"delta",
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json{
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{"content", content},
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}},
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}});
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}
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}
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json ret = json{{"choices", choices},
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{"created", t},
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{"id", gen_chatcmplid()},
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{"model", modelname},
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{"object", "chat.completion.chunk"}};
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return std::vector<json>({ret});
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}
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File diff suppressed because it is too large
Load Diff
507
examples/server/utils.hpp
Normal file
507
examples/server/utils.hpp
Normal file
@ -0,0 +1,507 @@
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#pragma once
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#include <string>
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#include <vector>
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#include <set>
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#include <mutex>
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#include <condition_variable>
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#include <unordered_map>
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#include "json.hpp"
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#include "../llava/clip.h"
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using json = nlohmann::json;
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extern bool server_verbose;
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#ifndef SERVER_VERBOSE
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#define SERVER_VERBOSE 1
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#endif
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#if SERVER_VERBOSE != 1
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#define LOG_VERBOSE(MSG, ...)
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#else
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#define LOG_VERBOSE(MSG, ...) \
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do \
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{ \
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if (server_verbose) \
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{ \
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server_log("VERBOSE", __func__, __LINE__, MSG, __VA_ARGS__); \
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} \
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} while (0)
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#endif
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#define LOG_ERROR( MSG, ...) server_log("ERROR", __func__, __LINE__, MSG, __VA_ARGS__)
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#define LOG_WARNING(MSG, ...) server_log("WARNING", __func__, __LINE__, MSG, __VA_ARGS__)
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#define LOG_INFO( MSG, ...) server_log("INFO", __func__, __LINE__, MSG, __VA_ARGS__)
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//
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// parallel
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//
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enum server_state {
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SERVER_STATE_LOADING_MODEL, // Server is starting up, model not fully loaded yet
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SERVER_STATE_READY, // Server is ready and model is loaded
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SERVER_STATE_ERROR // An error occurred, load_model failed
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};
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enum task_type {
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TASK_TYPE_COMPLETION,
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TASK_TYPE_CANCEL,
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TASK_TYPE_NEXT_RESPONSE
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};
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struct task_server {
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int id = -1; // to be filled by llama_server_queue
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int target_id;
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task_type type;
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json data;
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bool infill_mode = false;
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bool embedding_mode = false;
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int multitask_id = -1;
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};
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struct task_result {
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int id;
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int multitask_id = -1;
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bool stop;
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bool error;
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json result_json;
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};
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struct task_multi {
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int id;
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std::set<int> subtasks_remaining{};
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std::vector<task_result> results{};
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};
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// TODO: can become bool if we can't find use of more states
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enum slot_state
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{
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IDLE,
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PROCESSING,
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};
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enum slot_command
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{
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NONE,
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LOAD_PROMPT,
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RELEASE,
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};
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struct slot_params
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{
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bool stream = true;
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bool cache_prompt = false; // remember the prompt to avoid reprocessing all prompt
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uint32_t seed = -1; // RNG seed
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int32_t n_keep = 0; // number of tokens to keep from initial prompt
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int32_t n_predict = -1; // new tokens to predict
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std::vector<std::string> antiprompt;
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json input_prefix;
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json input_suffix;
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};
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struct slot_image
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{
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int32_t id;
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bool request_encode_image = false;
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float * image_embedding = nullptr;
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int32_t image_tokens = 0;
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clip_image_u8 * img_data;
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std::string prefix_prompt; // before of this image
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};
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// completion token output with probabilities
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struct completion_token_output
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{
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struct token_prob
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{
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llama_token tok;
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float prob;
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};
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std::vector<token_prob> probs;
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llama_token tok;
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std::string text_to_send;
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};
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static inline void server_log(const char *level, const char *function, int line,
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const char *message, const nlohmann::ordered_json &extra)
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{
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nlohmann::ordered_json log
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{
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{"timestamp", time(nullptr)},
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{"level", level},
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{"function", function},
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{"line", line},
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{"message", message},
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};
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if (!extra.empty())
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{
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log.merge_patch(extra);
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}
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const std::string str = log.dump(-1, ' ', false, json::error_handler_t::replace);
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printf("%.*s\n", (int)str.size(), str.data());
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fflush(stdout);
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}
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//
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// server utils
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//
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template <typename T>
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static T json_value(const json &body, const std::string &key, const T &default_value)
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{
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// Fallback null to default value
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return body.contains(key) && !body.at(key).is_null()
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? body.value(key, default_value)
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: default_value;
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}
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inline std::string format_chatml(std::vector<json> messages)
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{
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std::ostringstream chatml_msgs;
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for (auto it = messages.begin(); it != messages.end(); ++it) {
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chatml_msgs << "<|im_start|>"
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<< json_value(*it, "role", std::string("user")) << '\n';
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chatml_msgs << json_value(*it, "content", std::string(""))
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<< "<|im_end|>\n";
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}
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chatml_msgs << "<|im_start|>assistant" << '\n';
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return chatml_msgs.str();
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}
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//
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// work queue utils
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//
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struct llama_server_queue {
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int id = 0;
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std::mutex mutex_tasks;
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// queues
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std::vector<task_server> queue_tasks;
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std::vector<task_server> queue_tasks_deferred;
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std::vector<task_multi> queue_multitasks;
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std::condition_variable condition_tasks;
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// callback functions
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std::function<void(task_server&)> callback_new_task;
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std::function<void(task_multi&)> callback_finish_multitask;
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std::function<void(void)> callback_all_task_finished;
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// Add a new task to the end of the queue
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int post(task_server task) {
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std::unique_lock<std::mutex> lock(mutex_tasks);
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if (task.id == -1) {
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task.id = id++;
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}
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queue_tasks.push_back(std::move(task));
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condition_tasks.notify_one();
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return task.id;
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}
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// Add a new task, but defer until one slot is available
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void defer(task_server task) {
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std::unique_lock<std::mutex> lock(mutex_tasks);
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queue_tasks_deferred.push_back(std::move(task));
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}
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// Get the next id for creating anew task
|
||||
int get_new_id() {
|
||||
std::unique_lock<std::mutex> lock(mutex_tasks);
|
||||
return id++;
|
||||
}
|
||||
|
||||
// Register function to process a new task
|
||||
void on_new_task(std::function<void(task_server&)> callback) {
|
||||
callback_new_task = callback;
|
||||
}
|
||||
|
||||
// Register function to process a multitask
|
||||
void on_finish_multitask(std::function<void(task_multi&)> callback) {
|
||||
callback_finish_multitask = callback;
|
||||
}
|
||||
|
||||
// Register the function to be called when the batch of tasks is finished
|
||||
void on_all_tasks_finished(std::function<void(void)> callback) {
|
||||
callback_all_task_finished = callback;
|
||||
}
|
||||
|
||||
// Call when the state of one slot is changed
|
||||
void notify_slot_changed() {
|
||||
// move deferred tasks back to main loop
|
||||
std::unique_lock<std::mutex> lock(mutex_tasks);
|
||||
for (auto & task : queue_tasks_deferred) {
|
||||
queue_tasks.push_back(std::move(task));
|
||||
}
|
||||
queue_tasks_deferred.clear();
|
||||
}
|
||||
|
||||
// Start the main loop. This call is blocking
|
||||
void start_loop() {
|
||||
while (true) {
|
||||
// new task arrived
|
||||
LOG_VERBOSE("have new task", {});
|
||||
{
|
||||
while (true)
|
||||
{
|
||||
std::unique_lock<std::mutex> lock(mutex_tasks);
|
||||
if (queue_tasks.empty()) {
|
||||
lock.unlock();
|
||||
break;
|
||||
}
|
||||
task_server task = queue_tasks.front();
|
||||
queue_tasks.erase(queue_tasks.begin());
|
||||
lock.unlock();
|
||||
LOG_VERBOSE("callback_new_task", {});
|
||||
callback_new_task(task);
|
||||
}
|
||||
LOG_VERBOSE("callback_all_task_finished", {});
|
||||
// process and update all the multitasks
|
||||
auto queue_iterator = queue_multitasks.begin();
|
||||
while (queue_iterator != queue_multitasks.end())
|
||||
{
|
||||
if (queue_iterator->subtasks_remaining.empty())
|
||||
{
|
||||
// all subtasks done == multitask is done
|
||||
task_multi current_multitask = *queue_iterator;
|
||||
callback_finish_multitask(current_multitask);
|
||||
// remove this multitask
|
||||
queue_iterator = queue_multitasks.erase(queue_iterator);
|
||||
}
|
||||
else
|
||||
{
|
||||
++queue_iterator;
|
||||
}
|
||||
}
|
||||
// all tasks in the current loop is finished
|
||||
callback_all_task_finished();
|
||||
}
|
||||
LOG_VERBOSE("wait for new task", {});
|
||||
// wait for new task
|
||||
{
|
||||
std::unique_lock<std::mutex> lock(mutex_tasks);
|
||||
if (queue_tasks.empty()) {
|
||||
condition_tasks.wait(lock, [&]{
|
||||
return !queue_tasks.empty();
|
||||
});
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
//
|
||||
// functions to manage multitasks
|
||||
//
|
||||
|
||||
// add a multitask by specifying the id of all subtask (subtask is a task_server)
|
||||
void add_multitask(int multitask_id, std::vector<int>& sub_ids)
|
||||
{
|
||||
std::lock_guard<std::mutex> lock(mutex_tasks);
|
||||
task_multi multi;
|
||||
multi.id = multitask_id;
|
||||
std::copy(sub_ids.begin(), sub_ids.end(), std::inserter(multi.subtasks_remaining, multi.subtasks_remaining.end()));
|
||||
queue_multitasks.push_back(multi);
|
||||
}
|
||||
|
||||
// updatethe remaining subtasks, while appending results to multitask
|
||||
void update_multitask(int multitask_id, int subtask_id, task_result& result)
|
||||
{
|
||||
std::lock_guard<std::mutex> lock(mutex_tasks);
|
||||
for (auto& multitask : queue_multitasks)
|
||||
{
|
||||
if (multitask.id == multitask_id)
|
||||
{
|
||||
multitask.subtasks_remaining.erase(subtask_id);
|
||||
multitask.results.push_back(result);
|
||||
}
|
||||
}
|
||||
}
|
||||
};
|
||||
|
||||
struct llama_server_response {
|
||||
typedef std::function<void(int, int, task_result&)> callback_multitask_t;
|
||||
callback_multitask_t callback_update_multitask;
|
||||
// for keeping track of all tasks waiting for the result
|
||||
std::set<int> waiting_task_ids;
|
||||
// the main result queue
|
||||
std::vector<task_result> queue_results;
|
||||
std::mutex mutex_results;
|
||||
std::condition_variable condition_results;
|
||||
|
||||
void add_waiting_task_id(int task_id) {
|
||||
std::unique_lock<std::mutex> lock(mutex_results);
|
||||
waiting_task_ids.insert(task_id);
|
||||
}
|
||||
|
||||
void remove_waiting_task_id(int task_id) {
|
||||
std::unique_lock<std::mutex> lock(mutex_results);
|
||||
waiting_task_ids.erase(task_id);
|
||||
}
|
||||
|
||||
// This function blocks the thread until there is a response for this task_id
|
||||
task_result recv(int task_id) {
|
||||
while (true)
|
||||
{
|
||||
std::unique_lock<std::mutex> lock(mutex_results);
|
||||
condition_results.wait(lock, [&]{
|
||||
return !queue_results.empty();
|
||||
});
|
||||
LOG_VERBOSE("condition_results unblock", {});
|
||||
|
||||
for (int i = 0; i < (int) queue_results.size(); i++)
|
||||
{
|
||||
if (queue_results[i].id == task_id)
|
||||
{
|
||||
assert(queue_results[i].multitask_id == -1);
|
||||
task_result res = queue_results[i];
|
||||
queue_results.erase(queue_results.begin() + i);
|
||||
return res;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// should never reach here
|
||||
}
|
||||
|
||||
// Register the function to update multitask
|
||||
void on_multitask_update(callback_multitask_t callback) {
|
||||
callback_update_multitask = callback;
|
||||
}
|
||||
|
||||
// Send a new result to a waiting task_id
|
||||
void send(task_result result) {
|
||||
std::unique_lock<std::mutex> lock(mutex_results);
|
||||
LOG_VERBOSE("send new result", {});
|
||||
for (auto& task_id : waiting_task_ids) {
|
||||
// LOG_TEE("waiting task id %i \n", task_id);
|
||||
// for now, tasks that have associated parent multitasks just get erased once multitask picks up the result
|
||||
if (result.multitask_id == task_id)
|
||||
{
|
||||
LOG_VERBOSE("callback_update_multitask", {});
|
||||
callback_update_multitask(task_id, result.id, result);
|
||||
continue;
|
||||
}
|
||||
|
||||
if (result.id == task_id)
|
||||
{
|
||||
LOG_VERBOSE("queue_results.push_back", {});
|
||||
queue_results.push_back(result);
|
||||
condition_results.notify_one();
|
||||
return;
|
||||
}
|
||||
}
|
||||
}
|
||||
};
|
||||
|
||||
//
|
||||
// base64 utils (TODO: move to common in the future)
|
||||
//
|
||||
|
||||
static const std::string base64_chars =
|
||||
"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
|
||||
"abcdefghijklmnopqrstuvwxyz"
|
||||
"0123456789+/";
|
||||
|
||||
static inline bool is_base64(uint8_t c)
|
||||
{
|
||||
return (isalnum(c) || (c == '+') || (c == '/'));
|
||||
}
|
||||
|
||||
static inline std::vector<uint8_t> base64_decode(const std::string & encoded_string)
|
||||
{
|
||||
int i = 0;
|
||||
int j = 0;
|
||||
int in_ = 0;
|
||||
|
||||
int in_len = encoded_string.size();
|
||||
|
||||
uint8_t char_array_4[4];
|
||||
uint8_t char_array_3[3];
|
||||
|
||||
std::vector<uint8_t> ret;
|
||||
|
||||
while (in_len-- && (encoded_string[in_] != '=') && is_base64(encoded_string[in_]))
|
||||
{
|
||||
char_array_4[i++] = encoded_string[in_]; in_++;
|
||||
if (i == 4)
|
||||
{
|
||||
for (i = 0; i <4; i++)
|
||||
{
|
||||
char_array_4[i] = base64_chars.find(char_array_4[i]);
|
||||
}
|
||||
|
||||
char_array_3[0] = ((char_array_4[0] ) << 2) + ((char_array_4[1] & 0x30) >> 4);
|
||||
char_array_3[1] = ((char_array_4[1] & 0xf) << 4) + ((char_array_4[2] & 0x3c) >> 2);
|
||||
char_array_3[2] = ((char_array_4[2] & 0x3) << 6) + char_array_4[3];
|
||||
|
||||
for (i = 0; (i < 3); i++)
|
||||
{
|
||||
ret.push_back(char_array_3[i]);
|
||||
}
|
||||
i = 0;
|
||||
}
|
||||
}
|
||||
|
||||
if (i)
|
||||
{
|
||||
for (j = i; j <4; j++)
|
||||
{
|
||||
char_array_4[j] = 0;
|
||||
}
|
||||
|
||||
for (j = 0; j <4; j++)
|
||||
{
|
||||
char_array_4[j] = base64_chars.find(char_array_4[j]);
|
||||
}
|
||||
|
||||
char_array_3[0] = ((char_array_4[0] ) << 2) + ((char_array_4[1] & 0x30) >> 4);
|
||||
char_array_3[1] = ((char_array_4[1] & 0xf) << 4) + ((char_array_4[2] & 0x3c) >> 2);
|
||||
char_array_3[2] = ((char_array_4[2] & 0x3) << 6) + char_array_4[3];
|
||||
|
||||
for (j = 0; (j < i - 1); j++)
|
||||
{
|
||||
ret.push_back(char_array_3[j]);
|
||||
}
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
//
|
||||
// random string / id
|
||||
//
|
||||
|
||||
static std::string random_string()
|
||||
{
|
||||
static const std::string str("0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz");
|
||||
|
||||
std::random_device rd;
|
||||
std::mt19937 generator(rd());
|
||||
|
||||
std::string result(32, ' ');
|
||||
|
||||
for (int i = 0; i < 32; ++i) {
|
||||
result[i] = str[generator() % str.size()];
|
||||
}
|
||||
|
||||
return result;
|
||||
}
|
||||
|
||||
static std::string gen_chatcmplid()
|
||||
{
|
||||
std::stringstream chatcmplid;
|
||||
chatcmplid << "chatcmpl-" << random_string();
|
||||
return chatcmplid.str();
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user