568 lines · 19.0 KB · Rust
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use anyhow::{anyhow, Result};use collections::BTreeMap;use editor::{Editor, EditorElement, EditorStyle};use futures::{future::BoxFuture, FutureExt, StreamExt};use gpui::{    AnyView, AppContext, AsyncAppContext, FontStyle, ModelContext, Subscription, Task, TextStyle,    View, WhiteSpace,};use http_client::HttpClient;use language_model::{    LanguageModel, LanguageModelCompletionEvent, LanguageModelId, LanguageModelName,    LanguageModelProvider, LanguageModelProviderId, LanguageModelProviderName,    LanguageModelProviderState, LanguageModelRequest, RateLimiter, Role,};use open_ai::{    stream_completion, FunctionDefinition, ResponseStreamEvent, ToolChoice, ToolDefinition,};use schemars::JsonSchema;use serde::{Deserialize, Serialize};use settings::{Settings, SettingsStore};use std::sync::Arc;use strum::IntoEnumIterator;use theme::ThemeSettings;use ui::{prelude::*, Icon, IconName, Tooltip};use util::ResultExt; use crate::AllLanguageModelSettings; const PROVIDER_ID: &str = "openai";const PROVIDER_NAME: &str = "OpenAI"; #[derive(Default, Clone, Debug, PartialEq)]pub struct OpenAiSettings {    pub api_url: String,    pub available_models: Vec<AvailableModel>,    pub needs_setting_migration: bool,} #[derive(Clone, Debug, PartialEq, Serialize, Deserialize, JsonSchema)]pub struct AvailableModel {    pub name: String,    pub display_name: Option<String>,    pub max_tokens: usize,    pub max_output_tokens: Option<u32>,    pub max_completion_tokens: Option<u32>,} pub struct OpenAiLanguageModelProvider {    http_client: Arc<dyn HttpClient>,    state: gpui::Model<State>,} pub struct State {    api_key: Option<String>,    api_key_from_env: bool,    _subscription: Subscription,} const OPENAI_API_KEY_VAR: &str = "OPENAI_API_KEY"; impl State {    fn is_authenticated(&self) -> bool {        self.api_key.is_some()    }     fn reset_api_key(&self, cx: &mut ModelContext<Self>) -> Task<Result<()>> {        let settings = &AllLanguageModelSettings::get_global(cx).openai;        let delete_credentials = cx.delete_credentials(&settings.api_url);        cx.spawn(|this, mut cx| async move {            delete_credentials.await.log_err();            this.update(&mut cx, |this, cx| {                this.api_key = None;                this.api_key_from_env = false;                cx.notify();            })        })    }     fn set_api_key(&mut self, api_key: String, cx: &mut ModelContext<Self>) -> Task<Result<()>> {        let settings = &AllLanguageModelSettings::get_global(cx).openai;        let write_credentials =            cx.write_credentials(&settings.api_url, "Bearer", api_key.as_bytes());         cx.spawn(|this, mut cx| async move {            write_credentials.await?;            this.update(&mut cx, |this, cx| {                this.api_key = Some(api_key);                cx.notify();            })        })    }     fn authenticate(&self, cx: &mut ModelContext<Self>) -> Task<Result<()>> {        if self.is_authenticated() {            Task::ready(Ok(()))        } else {            let api_url = AllLanguageModelSettings::get_global(cx)                .openai                .api_url                .clone();            cx.spawn(|this, mut cx| async move {                let (api_key, from_env) = if let Ok(api_key) = std::env::var(OPENAI_API_KEY_VAR) {                    (api_key, true)                } else {                    let (_, api_key) = cx                        .update(|cx| cx.read_credentials(&api_url))?                        .await?                        .ok_or_else(|| anyhow!("credentials not found"))?;                    (String::from_utf8(api_key)?, false)                };                this.update(&mut cx, |this, cx| {                    this.api_key = Some(api_key);                    this.api_key_from_env = from_env;                    cx.notify();                })            })        }    }} impl OpenAiLanguageModelProvider {    pub fn new(http_client: Arc<dyn HttpClient>, cx: &mut AppContext) -> Self {        let state = cx.new_model(|cx| State {            api_key: None,            api_key_from_env: false,            _subscription: cx.observe_global::<SettingsStore>(|_this: &mut State, cx| {                cx.notify();            }),        });         Self { http_client, state }    }} impl LanguageModelProviderState for OpenAiLanguageModelProvider {    type ObservableEntity = State;     fn observable_entity(&self) -> Option<gpui::Model<Self::ObservableEntity>> {        Some(self.state.clone())    }} impl LanguageModelProvider for OpenAiLanguageModelProvider {    fn id(&self) -> LanguageModelProviderId {        LanguageModelProviderId(PROVIDER_ID.into())    }     fn name(&self) -> LanguageModelProviderName {        LanguageModelProviderName(PROVIDER_NAME.into())    }     fn icon(&self) -> IconName {        IconName::AiOpenAi    }     fn provided_models(&self, cx: &AppContext) -> Vec<Arc<dyn LanguageModel>> {        let mut models = BTreeMap::default();         // Add base models from open_ai::Model::iter()        for model in open_ai::Model::iter() {            if !matches!(model, open_ai::Model::Custom { .. }) {                models.insert(model.id().to_string(), model);            }        }         // Override with available models from settings        for model in &AllLanguageModelSettings::get_global(cx)            .openai            .available_models        {            models.insert(                model.name.clone(),                open_ai::Model::Custom {                    name: model.name.clone(),                    display_name: model.display_name.clone(),                    max_tokens: model.max_tokens,                    max_output_tokens: model.max_output_tokens,                    max_completion_tokens: model.max_completion_tokens,                },            );        }         models            .into_values()            .map(|model| {                Arc::new(OpenAiLanguageModel {                    id: LanguageModelId::from(model.id().to_string()),                    model,                    state: self.state.clone(),                    http_client: self.http_client.clone(),                    request_limiter: RateLimiter::new(4),                }) as Arc<dyn LanguageModel>            })            .collect()    }     fn is_authenticated(&self, cx: &AppContext) -> bool {        self.state.read(cx).is_authenticated()    }     fn authenticate(&self, cx: &mut AppContext) -> Task<Result<()>> {        self.state.update(cx, |state, cx| state.authenticate(cx))    }     fn configuration_view(&self, cx: &mut WindowContext) -> AnyView {        cx.new_view(|cx| ConfigurationView::new(self.state.clone(), cx))            .into()    }     fn reset_credentials(&self, cx: &mut AppContext) -> Task<Result<()>> {        self.state.update(cx, |state, cx| state.reset_api_key(cx))    }} pub struct OpenAiLanguageModel {    id: LanguageModelId,    model: open_ai::Model,    state: gpui::Model<State>,    http_client: Arc<dyn HttpClient>,    request_limiter: RateLimiter,} impl OpenAiLanguageModel {    fn stream_completion(        &self,        request: open_ai::Request,        cx: &AsyncAppContext,    ) -> BoxFuture<'static, Result<futures::stream::BoxStream<'static, Result<ResponseStreamEvent>>>>    {        let http_client = self.http_client.clone();        let Ok((api_key, api_url)) = cx.read_model(&self.state, |state, cx| {            let settings = &AllLanguageModelSettings::get_global(cx).openai;            (state.api_key.clone(), settings.api_url.clone())        }) else {            return futures::future::ready(Err(anyhow!("App state dropped"))).boxed();        };         let future = self.request_limiter.stream(async move {            let api_key = api_key.ok_or_else(|| anyhow!("Missing OpenAI API Key"))?;            let request = stream_completion(http_client.as_ref(), &api_url, &api_key, request);            let response = request.await?;            Ok(response)        });         async move { Ok(future.await?.boxed()) }.boxed()    }} impl LanguageModel for OpenAiLanguageModel {    fn id(&self) -> LanguageModelId {        self.id.clone()    }     fn name(&self) -> LanguageModelName {        LanguageModelName::from(self.model.display_name().to_string())    }     fn provider_id(&self) -> LanguageModelProviderId {        LanguageModelProviderId(PROVIDER_ID.into())    }     fn provider_name(&self) -> LanguageModelProviderName {        LanguageModelProviderName(PROVIDER_NAME.into())    }     fn telemetry_id(&self) -> String {        format!("openai/{}", self.model.id())    }     fn max_token_count(&self) -> usize {        self.model.max_token_count()    }     fn max_output_tokens(&self) -> Option<u32> {        self.model.max_output_tokens()    }     fn count_tokens(        &self,        request: LanguageModelRequest,        cx: &AppContext,    ) -> BoxFuture<'static, Result<usize>> {        count_open_ai_tokens(request, self.model.clone(), cx)    }     fn stream_completion(        &self,        request: LanguageModelRequest,        cx: &AsyncAppContext,    ) -> BoxFuture<        'static,        Result<futures::stream::BoxStream<'static, Result<LanguageModelCompletionEvent>>>,    > {        let request = request.into_open_ai(self.model.id().into(), self.max_output_tokens());        let completions = self.stream_completion(request, cx);        async move {            Ok(open_ai::extract_text_from_events(completions.await?)                .map(|result| result.map(LanguageModelCompletionEvent::Text))                .boxed())        }        .boxed()    }     fn use_any_tool(        &self,        request: LanguageModelRequest,        tool_name: String,        tool_description: String,        schema: serde_json::Value,        cx: &AsyncAppContext,    ) -> BoxFuture<'static, Result<futures::stream::BoxStream<'static, Result<String>>>> {        let mut request = request.into_open_ai(self.model.id().into(), self.max_output_tokens());        request.tool_choice = Some(ToolChoice::Other(ToolDefinition::Function {            function: FunctionDefinition {                name: tool_name.clone(),                description: None,                parameters: None,            },        }));        request.tools = vec![ToolDefinition::Function {            function: FunctionDefinition {                name: tool_name.clone(),                description: Some(tool_description),                parameters: Some(schema),            },        }];         let response = self.stream_completion(request, cx);        self.request_limiter            .run(async move {                let response = response.await?;                Ok(                    open_ai::extract_tool_args_from_events(tool_name, Box::pin(response))                        .await?                        .boxed(),                )            })            .boxed()    }} pub fn count_open_ai_tokens(    request: LanguageModelRequest,    model: open_ai::Model,    cx: &AppContext,) -> BoxFuture<'static, Result<usize>> {    cx.background_executor()        .spawn(async move {            let messages = request                .messages                .into_iter()                .map(|message| tiktoken_rs::ChatCompletionRequestMessage {                    role: match message.role {                        Role::User => "user".into(),                        Role::Assistant => "assistant".into(),                        Role::System => "system".into(),                    },                    content: Some(message.string_contents()),                    name: None,                    function_call: None,                })                .collect::<Vec<_>>();             match model {                open_ai::Model::Custom { .. }                | open_ai::Model::O1Mini                | open_ai::Model::O1Preview => {                    tiktoken_rs::num_tokens_from_messages("gpt-4", &messages)                }                _ => tiktoken_rs::num_tokens_from_messages(model.id(), &messages),            }        })        .boxed()} struct ConfigurationView {    api_key_editor: View<Editor>,    state: gpui::Model<State>,    load_credentials_task: Option<Task<()>>,} impl ConfigurationView {    fn new(state: gpui::Model<State>, cx: &mut ViewContext<Self>) -> Self {        let api_key_editor = cx.new_view(|cx| {            let mut editor = Editor::single_line(cx);            editor.set_placeholder_text("sk-000000000000000000000000000000000000000000000000", cx);            editor        });         cx.observe(&state, |_, _, cx| {            cx.notify();        })        .detach();         let load_credentials_task = Some(cx.spawn({            let state = state.clone();            |this, mut cx| async move {                if let Some(task) = state                    .update(&mut cx, |state, cx| state.authenticate(cx))                    .log_err()                {                    // We don't log an error, because "not signed in" is also an error.                    let _ = task.await;                }                 this.update(&mut cx, |this, cx| {                    this.load_credentials_task = None;                    cx.notify();                })                .log_err();            }        }));         Self {            api_key_editor,            state,            load_credentials_task,        }    }     fn save_api_key(&mut self, _: &menu::Confirm, cx: &mut ViewContext<Self>) {        let api_key = self.api_key_editor.read(cx).text(cx);        if api_key.is_empty() {            return;        }         let state = self.state.clone();        cx.spawn(|_, mut cx| async move {            state                .update(&mut cx, |state, cx| state.set_api_key(api_key, cx))?                .await        })        .detach_and_log_err(cx);         cx.notify();    }     fn reset_api_key(&mut self, cx: &mut ViewContext<Self>) {        self.api_key_editor            .update(cx, |editor, cx| editor.set_text("", cx));         let state = self.state.clone();        cx.spawn(|_, mut cx| async move {            state                .update(&mut cx, |state, cx| state.reset_api_key(cx))?                .await        })        .detach_and_log_err(cx);         cx.notify();    }     fn render_api_key_editor(&self, cx: &mut ViewContext<Self>) -> impl IntoElement {        let settings = ThemeSettings::get_global(cx);        let text_style = TextStyle {            color: cx.theme().colors().text,            font_family: settings.ui_font.family.clone(),            font_features: settings.ui_font.features.clone(),            font_fallbacks: settings.ui_font.fallbacks.clone(),            font_size: rems(0.875).into(),            font_weight: settings.ui_font.weight,            font_style: FontStyle::Normal,            line_height: relative(1.3),            background_color: None,            underline: None,            strikethrough: None,            white_space: WhiteSpace::Normal,            truncate: None,        };        EditorElement::new(            &self.api_key_editor,            EditorStyle {                background: cx.theme().colors().editor_background,                local_player: cx.theme().players().local(),                text: text_style,                ..Default::default()            },        )    }     fn should_render_editor(&self, cx: &mut ViewContext<Self>) -> bool {        !self.state.read(cx).is_authenticated()    }} impl Render for ConfigurationView {    fn render(&mut self, cx: &mut ViewContext<Self>) -> impl IntoElement {        const OPENAI_CONSOLE_URL: &str = "https://platform.openai.com/api-keys";        const INSTRUCTIONS: [&str; 4] = [            "To use Zed's assistant with OpenAI, you need to add an API key. Follow these steps:",            " - Create one by visiting:",            " - Ensure your OpenAI account has credits",            " - Paste your API key below and hit enter to start using the assistant",        ];         let env_var_set = self.state.read(cx).api_key_from_env;         if self.load_credentials_task.is_some() {            div().child(Label::new("Loading credentials...")).into_any()        } else if self.should_render_editor(cx) {

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