Claudio Ortolina
126 lines
3.4 KiB
Elixir
126 lines
3.4 KiB
Elixir
defmodule OpenAI.API do
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# Lifted from https://fly.io/phoenix-files/streaming-openai-responses/
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def gpt_stream(completion, api_key, cb) do
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fun = fn request, finch_request, finch_name, finch_options ->
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fun = fn
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{:status, status}, response ->
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%{response | status: status}
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{:headers, headers}, response ->
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%{response | headers: headers}
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{:data, data}, response ->
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body =
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data
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|> String.split("data: ")
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|> Enum.map(fn str ->
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str
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|> String.trim()
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|> decode_body(cb)
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end)
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|> Enum.filter(fn d -> d != :ok end)
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old_body = if response.body == "", do: [], else: response.body
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%{response | body: old_body ++ body}
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end
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case Finch.stream(finch_request, finch_name, Req.Response.new(), fun, finch_options) do
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{:ok, response} -> {request, response}
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{:error, exception, _response} -> {request, exception}
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end
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end
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Req.post!("https://api.openai.com/v1/chat/completions",
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receive_timeout: 1000,
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connect_options: [
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timeout: 2500
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],
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json: %{
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model: completion.model,
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messages: [Map.take(completion, [:content, :role])],
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response_format: %{type: "json_object"},
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stream: true,
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temperature: completion.temperature
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},
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auth: {:bearer, api_key},
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finch_request: fun
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)
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end
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def chat_stream(messages, model, temperature, api_key, cb) do
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fun = fn request, finch_request, finch_name, finch_options ->
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fun = fn
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{:status, status}, response ->
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%{response | status: status}
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{:headers, headers}, response ->
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%{response | headers: headers}
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{:data, data}, response ->
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data
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|> String.split("data: ")
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|> Enum.each(fn str ->
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str
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|> String.trim()
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|> decode_chat_chunk(cb)
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end)
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response
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end
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case Finch.stream(finch_request, finch_name, Req.Response.new(), fun, finch_options) do
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{:ok, response} -> {request, response}
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{:error, exception, _response} -> {request, exception}
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end
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end
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Req.post!("https://api.openai.com/v1/chat/completions",
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receive_timeout: 30_000,
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connect_options: [
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timeout: 5_000
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],
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json: %{
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model: model,
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messages: messages,
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stream: true,
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temperature: temperature
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},
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auth: {:bearer, api_key},
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finch_request: fun
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)
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end
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def get_embeddings(text, api_key) do
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resp =
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Req.post!("https://api.openai.com/v1/embeddings",
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json: %{
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input: text,
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model: "text-embedding-3-small"
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},
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auth: {:bearer, api_key}
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)
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if resp.status == 200 do
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embeddings = get_in(resp.body, ["data", Access.at(0), "embedding"])
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{:ok, embeddings}
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else
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{:error, resp.body}
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end
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end
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defp decode_body("", _), do: :ok
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defp decode_body("[DONE]", _), do: :ok
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defp decode_body(json, cb), do: cb.(JSON.decode!(json))
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defp decode_chat_chunk("", _cb), do: :ok
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defp decode_chat_chunk("[DONE]", _cb), do: :ok
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defp decode_chat_chunk(json, cb) do
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case get_in(JSON.decode!(json), ["choices", Access.at(0), "delta", "content"]) do
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nil -> :ok
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content -> cb.(content)
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end
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end
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end
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