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https://github.com/discourse/discourse-ai.git
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e0bf6adb5b
This PR adds tool support to available LLMs. We'll buffer tool invocations and return them instead of making users of this service parse the response. It also adds support for conversation context in the generic prompt. It includes bot messages, user messages, and tool invocations, which we'll trim to make sure it doesn't exceed the prompt limit, then translate them to the correct dialect. Finally, It adds some buffering when reading chunks to handle cases when streaming is extremely slow.:M
77 lines
2.0 KiB
Ruby
77 lines
2.0 KiB
Ruby
# frozen_string_literal: true
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module DiscourseAi
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module Completions
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module Dialects
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class Llama2Classic < Dialect
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class << self
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def can_translate?(model_name)
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%w[Llama2-*-chat-hf Llama2-chat-hf].include?(model_name)
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end
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def tokenizer
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DiscourseAi::Tokenizer::Llama2Tokenizer
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end
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end
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def translate
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llama2_prompt = +<<~TEXT
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[INST]
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<<SYS>>
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#{prompt[:insts]}
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#{build_tools_prompt}#{prompt[:post_insts]}
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<</SYS>>
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[/INST]
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TEXT
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if prompt[:examples]
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prompt[:examples].each do |example_pair|
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llama2_prompt << "[INST]#{example_pair.first}[/INST]\n"
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llama2_prompt << "#{example_pair.second}\n"
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end
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end
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llama2_prompt << conversation_context if prompt[:conversation_context].present?
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llama2_prompt << "[INST]#{prompt[:input]}[/INST]\n"
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end
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def conversation_context
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return "" if prompt[:conversation_context].blank?
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trimmed_context = trim_context(prompt[:conversation_context])
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trimmed_context
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.reverse
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.reduce(+"") do |memo, context|
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if context[:type] == "tool"
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memo << <<~TEXT
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[INST]
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<function_results>
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<result>
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<tool_name>#{context[:name]}</tool_name>
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<json>
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#{context[:content]}
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</json>
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</result>
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</function_results>
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[/INST]
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TEXT
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elsif context[:type] == "assistant"
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memo << "[INST]" << context[:content] << "[/INST]\n"
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else
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memo << context[:content] << "\n"
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end
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memo
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end
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end
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def max_prompt_tokens
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SiteSetting.ai_hugging_face_token_limit
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end
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end
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end
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end
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end
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