Program Listing for File llm_engine.cpp
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/*
* SPDX-FileCopyrightText: Copyright (c) 2023-2024, NVIDIA CORPORATION & AFFILIATES. All rights reserved.
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "morpheus/llm/llm_engine.hpp"
#include "morpheus/llm/llm_context.hpp" // for LLMContext
#include "morpheus/llm/llm_task.hpp"
#include "morpheus/llm/llm_task_handler.hpp" // for LLMTaskHandler
#include "morpheus/llm/llm_task_handler_runner.hpp" // for LLMTaskHandlerRunner
#include "morpheus/llm/utils.hpp"
#include "morpheus/messages/control.hpp" // for ControlMessage
#include <mrc/coroutines/task.hpp> // IWYU pragma: keep
#include <nlohmann/json.hpp>
#include <coroutine>
#include <optional>
#include <stdexcept>
#include <string>
#include <utility>
namespace morpheus::llm {
LLMEngine::LLMEngine() = default;
LLMEngine::~LLMEngine() = default;
void LLMEngine::add_task_handler(user_input_mappings_t inputs, std::shared_ptr<LLMTaskHandler> task_handler)
{
auto input_names = task_handler->get_input_names();
auto final_inputs = process_input_names(inputs, input_names);
m_task_handlers.push_back(std::make_shared<LLMTaskHandlerRunner>(std::move(final_inputs), task_handler));
}
Task<std::vector<std::shared_ptr<ControlMessage>>> LLMEngine::run(std::shared_ptr<ControlMessage> input_message)
{
if (!input_message)
{
throw std::runtime_error("LLMEngine::run() called with a null message");
}
if (!input_message->has_task("llm_engine"))
{
throw std::runtime_error("LLMEngine::run() called with a message that does not have the 'llm_engine' task");
}
std::vector<std::shared_ptr<ControlMessage>> output_messages;
while (input_message->has_task("llm_engine"))
{
auto current_task = input_message->remove_task("llm_engine");
// Temp create an instance of LLMTask for type safety
LLMTask tmp_task(current_task["task_type"].get<std::string>(), current_task.at("task_dict"));
// Set the name, task, control_message and inputs on the context
auto context = std::make_shared<LLMContext>(tmp_task, input_message);
// Call the base node
co_await this->execute(context);
// Pass the outputs into the task generators
auto tasks = co_await this->handle_tasks(context);
output_messages.insert(output_messages.end(), tasks.begin(), tasks.end());
}
co_return output_messages;
}
Task<std::vector<std::shared_ptr<ControlMessage>>> LLMEngine::handle_tasks(std::shared_ptr<LLMContext> context)
{
// Wait for the base node outputs (This will yield if not already available)
// auto outputs = context->get_outputs();
for (auto& task_handler : m_task_handlers)
{
auto new_tasks = co_await task_handler->try_handle(context);
if (new_tasks.has_value())
{
co_return new_tasks.value();
}
}
throw std::runtime_error("No task handler was able to handle the input message and responses generated");
}
} // namespace morpheus::llm