130 lines
4.0 KiB
Rust
130 lines
4.0 KiB
Rust
use async_stream::stream;
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use futures_util::{Stream, StreamExt};
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use serde::{Serialize, de::DeserializeOwned};
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use tokio_util::{
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codec::{FramedRead, LinesCodec},
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io::StreamReader,
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};
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use tracing::info;
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use crate::{
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error::{OllamaError, OllamaResult},
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types::{
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chat::{ChatRequest, ChatResponse},
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generate::{GenerateRequest, GenerateResponse},
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ps::PsResponse,
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pull::{PullRequest, PullResponse},
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tags::TagsResponse,
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version::VersionResponse,
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},
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};
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pub mod error;
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pub mod types;
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pub struct OllamaClient {
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server_address: String,
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}
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impl OllamaClient {
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pub fn new<S: AsRef<str>>(server_address: S) -> Self {
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Self {
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server_address: server_address.as_ref().to_string(),
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}
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}
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/// Retrieve the version of the Ollama
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pub async fn version(&self) -> OllamaResult<VersionResponse> {
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let request_address = format!("{}/api/version", self.server_address);
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Ok(reqwest::get(request_address)
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.await?
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.error_for_status()?
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.json()
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.await?)
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}
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/// Fetch a list of models and their details
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pub async fn tags(&self) -> OllamaResult<TagsResponse> {
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let request_address = format!("{}/api/tags", self.server_address);
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info!("List models: {}", request_address);
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Ok(reqwest::get(request_address)
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.await?
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.error_for_status()?
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.json()
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.await?)
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}
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/// Retrieve a list of models that are currently running
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pub async fn ps(&self) -> OllamaResult<PsResponse> {
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let request_address = format!("{}/api/ps", self.server_address);
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info!("List models: {}", request_address);
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Ok(reqwest::get(request_address)
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.await?
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.error_for_status()?
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.json()
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.await?)
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}
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async fn stream_response<R: Serialize, T: DeserializeOwned>(
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&self,
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endpoint: String,
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request: R,
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) -> impl Stream<Item = OllamaResult<T>> {
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let client = reqwest::Client::new();
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Box::pin(stream! {
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let response = client
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.post(endpoint)
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.json(&request)
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.send()
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.await
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.map_err(OllamaError::from)?; // Adjust based on your error type
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let bytes_stream = response.bytes_stream();
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let body_reader = StreamReader::new(
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bytes_stream.map(|res| res.map_err(std::io::Error::other)),
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);
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let mut lines_stream = FramedRead::new(body_reader, LinesCodec::new());
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while let Some(line_result) = lines_stream.next().await {
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match line_result {
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Ok(line_content) => {
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if let Ok(parsed) = serde_json::from_str::<T>(&line_content) {
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yield Ok(parsed);
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}
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}
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Err(e) => yield Err(OllamaError::from(e)),
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}
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}
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})
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}
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/// Generates a response for the provided prompt
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pub async fn generate(
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&self,
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request: GenerateRequest,
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) -> impl Stream<Item = OllamaResult<GenerateResponse>> {
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let request_address = format!("{}/api/generate", self.server_address);
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self.stream_response(request_address, request).await
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}
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/// Generate the next chat message in a conversation between a user and an assistant.
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pub async fn chat(
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&self,
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request: ChatRequest,
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) -> impl Stream<Item = OllamaResult<ChatResponse>> {
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let request_address = format!("{}/api/chat", self.server_address);
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self.stream_response(request_address, request).await
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}
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/// Pull a model
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pub async fn pull(
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&self,
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request: PullRequest,
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) -> impl Stream<Item = OllamaResult<PullResponse>> {
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let request_address = format!("{}/api/pull", self.server_address);
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self.stream_response(request_address, request).await
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}
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}
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