mirror of
https://github.com/aaronpo97/the-biergarten-app.git
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Aaron Po
cae6d5e110
* add brewery coordinates * Add openai mode * Add coordinates to schema * Fix C++ review findings in pipeline: k-prefixed enum values, include ordering, populated validation error messages, conventional const notation, and endl replaced with newline
105 lines
4.1 KiB
C++
105 lines
4.1 KiB
C++
#ifndef BIERGARTEN_PIPELINE_INCLUDES_DATA_GENERATION_OPENAI_GENERATOR_H_
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#define BIERGARTEN_PIPELINE_INCLUDES_DATA_GENERATION_OPENAI_GENERATOR_H_
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/**
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* @file data_generation/openai_generator.h
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* @brief OpenAI Chat Completions API-backed implementation of DataGenerator.
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*/
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#include <memory>
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#include <string>
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#include <string_view>
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#include "data_generation/data_generator.h"
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#include "data_model/models.h"
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#include "services/logging/logger.h"
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#include "services/prompting/prompt_directory.h"
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#include "web_client/web_client.h"
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/**
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* @brief Data generator implementation backed by the OpenAI Chat
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* Completions API.
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*
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* Unlike LlamaGenerator, this generator has no local model state and no
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* chat-template formatting step -- Chat Completions takes system/user
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* messages directly, and Structured Outputs (response_format: json_schema,
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* strict: true) guarantee schema-valid JSON, replacing llama.cpp's GBNF
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* grammar constraint.
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*/
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class OpenAIGenerator final : public DataGenerator {
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public:
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/**
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* @brief Constructs a generator that calls the OpenAI Chat Completions
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* API.
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*
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* @param api_key OpenAI API key (from the OPENAI_API_KEY environment
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* variable -- never accepted as a CLI argument).
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* @param model OpenAI model ID, e.g. "gpt-4o-mini".
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* @param logger Sink for pipeline diagnostics.
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* @param prompt_directory Directory service for loading named prompt
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* files (the same BREWERY_GENERATION/USER_GENERATION prompts Llama
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* uses -- they're backend-agnostic).
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* @param web_client HTTP client used to reach the Chat Completions API.
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*/
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OpenAIGenerator(std::string api_key, std::string model,
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std::shared_ptr<ILogger> logger,
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std::unique_ptr<IPromptDirectory> prompt_directory,
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std::unique_ptr<WebClient> web_client);
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~OpenAIGenerator() override = default;
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OpenAIGenerator(const OpenAIGenerator&) = delete;
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OpenAIGenerator& operator=(const OpenAIGenerator&) = delete;
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OpenAIGenerator(OpenAIGenerator&&) = delete;
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OpenAIGenerator& operator=(OpenAIGenerator&&) = delete;
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/**
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* @brief Generates brewery data for a specific location.
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*
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* @param enriched_city Enriched city the brewery is associated with.
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* @return Generated brewery result.
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*/
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BreweryResult GenerateBrewery(const EnrichedCity& enriched_city) override;
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/**
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* @brief Generates a user profile grounded in a sampled name and persona.
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*
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* @param city Enriched city the user is associated with.
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* @param persona Persona archetype grounding the generated bio.
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* @param name Sampled first/last name -- not LLM-invented.
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* @return Generated user profile.
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*/
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UserResult GenerateUser(const EnrichedCity& city, const UserPersona& persona,
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const Name& name) override;
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private:
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/**
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* @brief Sends a single Chat Completions request with a Structured
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* Outputs schema and returns the raw JSON text of the response.
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*
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* @param system_prompt System role message content.
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* @param user_prompt User role message content.
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* @param json_schema Raw JSON Schema text constraining the response
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* shape (see data_generation/openai_json_schemas.h).
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* @param schema_name Identifier for the schema, required by the
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* response_format.json_schema wrapper.
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* @param max_tokens Maximum completion tokens to generate.
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* @return Raw JSON text produced by the model.
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* @throws std::runtime_error on a request/HTTP failure, a safety-policy
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* refusal, or a response with no message content.
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*/
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std::string CallChatCompletionsApi(const std::string& system_prompt,
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const std::string& user_prompt,
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std::string_view json_schema,
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std::string_view schema_name,
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int max_tokens);
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std::string api_key_;
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std::string model_;
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std::shared_ptr<ILogger> logger_;
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std::unique_ptr<IPromptDirectory> prompt_directory_;
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std::unique_ptr<WebClient> web_client_;
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};
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#endif // BIERGARTEN_PIPELINE_INCLUDES_DATA_GENERATION_OPENAI_GENERATOR_H_
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