Restore codebase deleted by bad auto-commit e4227cf

Commit e4227cf (a story creation auto-commit) erroneously deleted 175
files from master's tree, likely due to a race condition between
concurrent git operations. This commit re-adds all files from the
working directory.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
dave
2026-03-22 19:07:07 +00:00
parent 89f776b978
commit f610ef6046
174 changed files with 84280 additions and 0 deletions
+868
View File
@@ -0,0 +1,868 @@
use crate::llm::types::{
CompletionResponse, FunctionCall, Message, Role, ToolCall, ToolDefinition,
};
use futures::StreamExt;
use reqwest::header::{CONTENT_TYPE, HeaderMap, HeaderValue};
use serde::{Deserialize, Serialize};
use serde_json::json;
use tokio::sync::watch::Receiver;
const ANTHROPIC_API_URL: &str = "https://api.anthropic.com/v1/messages";
const ANTHROPIC_VERSION: &str = "2023-06-01";
pub struct AnthropicProvider {
api_key: String,
client: reqwest::Client,
api_url: String,
}
#[derive(Debug, Serialize, Deserialize)]
struct AnthropicMessage {
role: String, // "user" or "assistant"
content: AnthropicContent,
}
#[derive(Debug, Serialize, Deserialize)]
#[serde(untagged)]
enum AnthropicContent {
Text(String),
Blocks(Vec<AnthropicContentBlock>),
}
#[derive(Debug, Serialize, Deserialize)]
#[serde(tag = "type")]
enum AnthropicContentBlock {
#[serde(rename = "text")]
Text { text: String },
#[serde(rename = "tool_use")]
ToolUse {
id: String,
name: String,
input: serde_json::Value,
},
#[serde(rename = "tool_result")]
ToolResult {
tool_use_id: String,
content: String,
},
}
#[derive(Debug, Serialize)]
struct AnthropicTool {
name: String,
description: String,
input_schema: serde_json::Value,
}
#[derive(Debug, Deserialize)]
struct StreamEvent {
#[serde(rename = "type")]
event_type: String,
#[serde(flatten)]
data: serde_json::Value,
}
impl AnthropicProvider {
pub fn new(api_key: String) -> Self {
Self {
api_key,
client: reqwest::Client::new(),
api_url: ANTHROPIC_API_URL.to_string(),
}
}
#[cfg(test)]
fn new_with_url(api_key: String, api_url: String) -> Self {
Self {
api_key,
client: reqwest::Client::new(),
api_url,
}
}
fn convert_tools(tools: &[ToolDefinition]) -> Vec<AnthropicTool> {
tools
.iter()
.map(|tool| AnthropicTool {
name: tool.function.name.clone(),
description: tool.function.description.clone(),
input_schema: tool.function.parameters.clone(),
})
.collect()
}
fn convert_messages(messages: &[Message]) -> Vec<AnthropicMessage> {
let mut anthropic_messages: Vec<AnthropicMessage> = Vec::new();
for msg in messages {
match msg.role {
Role::System => {
continue;
}
Role::User => {
anthropic_messages.push(AnthropicMessage {
role: "user".to_string(),
content: AnthropicContent::Text(msg.content.clone()),
});
}
Role::Assistant => {
if let Some(tool_calls) = &msg.tool_calls {
let mut blocks = Vec::new();
if !msg.content.is_empty() {
blocks.push(AnthropicContentBlock::Text {
text: msg.content.clone(),
});
}
for call in tool_calls {
let input: serde_json::Value =
serde_json::from_str(&call.function.arguments).unwrap_or(json!({}));
blocks.push(AnthropicContentBlock::ToolUse {
id: call
.id
.clone()
.unwrap_or_else(|| uuid::Uuid::new_v4().to_string()),
name: call.function.name.clone(),
input,
});
}
anthropic_messages.push(AnthropicMessage {
role: "assistant".to_string(),
content: AnthropicContent::Blocks(blocks),
});
} else {
anthropic_messages.push(AnthropicMessage {
role: "assistant".to_string(),
content: AnthropicContent::Text(msg.content.clone()),
});
}
}
Role::Tool => {
let tool_use_id = msg.tool_call_id.clone().unwrap_or_default();
anthropic_messages.push(AnthropicMessage {
role: "user".to_string(),
content: AnthropicContent::Blocks(vec![
AnthropicContentBlock::ToolResult {
tool_use_id,
content: msg.content.clone(),
},
]),
});
}
}
}
anthropic_messages
}
fn extract_system_prompt(messages: &[Message]) -> String {
messages
.iter()
.filter(|m| matches!(m.role, Role::System))
.map(|m| m.content.as_str())
.collect::<Vec<_>>()
.join("\n\n")
}
pub async fn chat_stream<F, A>(
&self,
model: &str,
messages: &[Message],
tools: &[ToolDefinition],
cancel_rx: &mut Receiver<bool>,
mut on_token: F,
mut on_activity: A,
) -> Result<CompletionResponse, String>
where
F: FnMut(&str),
A: FnMut(&str),
{
let anthropic_messages = Self::convert_messages(messages);
let anthropic_tools = Self::convert_tools(tools);
let system_prompt = Self::extract_system_prompt(messages);
let mut request_body = json!({
"model": model,
"max_tokens": 4096,
"messages": anthropic_messages,
"stream": true,
});
if !system_prompt.is_empty() {
request_body["system"] = json!(system_prompt);
}
if !anthropic_tools.is_empty() {
request_body["tools"] = json!(anthropic_tools);
}
let mut headers = HeaderMap::new();
headers.insert(CONTENT_TYPE, HeaderValue::from_static("application/json"));
headers.insert(
"x-api-key",
HeaderValue::from_str(&self.api_key).map_err(|e| e.to_string())?,
);
headers.insert(
"anthropic-version",
HeaderValue::from_static(ANTHROPIC_VERSION),
);
let response = self
.client
.post(&self.api_url)
.headers(headers)
.json(&request_body)
.send()
.await
.map_err(|e| format!("Failed to send request to Anthropic: {e}"))?;
if !response.status().is_success() {
let status = response.status();
let error_text = response
.text()
.await
.unwrap_or_else(|_| "Unknown error".to_string());
return Err(format!("Anthropic API error {status}: {error_text}"));
}
let mut stream = response.bytes_stream();
let mut accumulated_text = String::new();
let mut tool_calls: Vec<ToolCall> = Vec::new();
let mut current_tool_use: Option<(String, String, String)> = None;
loop {
let chunk = tokio::select! {
result = stream.next() => {
match result {
Some(c) => c,
None => break,
}
}
_ = cancel_rx.changed() => {
if *cancel_rx.borrow() {
return Err("Chat cancelled by user".to_string());
}
continue;
}
};
let bytes = chunk.map_err(|e| format!("Stream error: {e}"))?;
let text = String::from_utf8_lossy(&bytes);
for line in text.lines() {
if let Some(json_str) = line.strip_prefix("data: ") {
if json_str == "[DONE]" {
break;
}
let event: StreamEvent = match serde_json::from_str(json_str) {
Ok(e) => e,
Err(_) => continue,
};
match event.event_type.as_str() {
"content_block_start" => {
if let Some(content_block) = event.data.get("content_block")
&& content_block.get("type") == Some(&json!("tool_use"))
{
let id = content_block["id"].as_str().unwrap_or("").to_string();
let name = content_block["name"].as_str().unwrap_or("").to_string();
on_activity(&name);
current_tool_use = Some((id, name, String::new()));
}
}
"content_block_delta" => {
if let Some(delta) = event.data.get("delta") {
if delta.get("type") == Some(&json!("text_delta")) {
if let Some(text) = delta.get("text").and_then(|t| t.as_str()) {
accumulated_text.push_str(text);
on_token(text);
}
} else if delta.get("type") == Some(&json!("input_json_delta"))
&& let Some((_, _, input_json)) = &mut current_tool_use
&& let Some(partial) =
delta.get("partial_json").and_then(|p| p.as_str())
{
input_json.push_str(partial);
}
}
}
"content_block_stop" => {
if let Some((id, name, input_json)) = current_tool_use.take() {
tool_calls.push(ToolCall {
id: Some(id),
kind: "function".to_string(),
function: FunctionCall {
name,
arguments: input_json,
},
});
}
}
_ => {}
}
}
}
}
Ok(CompletionResponse {
content: if accumulated_text.is_empty() {
None
} else {
Some(accumulated_text)
},
tool_calls: if tool_calls.is_empty() {
None
} else {
Some(tool_calls)
},
session_id: None,
})
}
}
#[cfg(test)]
mod tests {
use super::{AnthropicContent, AnthropicContentBlock, AnthropicProvider};
use crate::llm::types::{
FunctionCall, Message, Role, ToolCall, ToolDefinition, ToolFunctionDefinition,
};
use serde_json::json;
fn user_msg(content: &str) -> Message {
Message {
role: Role::User,
content: content.to_string(),
tool_calls: None,
tool_call_id: None,
}
}
fn system_msg(content: &str) -> Message {
Message {
role: Role::System,
content: content.to_string(),
tool_calls: None,
tool_call_id: None,
}
}
fn assistant_msg(content: &str) -> Message {
Message {
role: Role::Assistant,
content: content.to_string(),
tool_calls: None,
tool_call_id: None,
}
}
fn make_tool_def(name: &str) -> ToolDefinition {
ToolDefinition {
kind: "function".to_string(),
function: ToolFunctionDefinition {
name: name.to_string(),
description: format!("{name} description"),
parameters: json!({"type": "object", "properties": {}}),
},
}
}
// ── convert_tools ────────────────────────────────────────────────────────
#[test]
fn test_convert_tools_empty() {
let result = AnthropicProvider::convert_tools(&[]);
assert!(result.is_empty());
}
#[test]
fn test_convert_tools_single() {
let tool = make_tool_def("search_files");
let result = AnthropicProvider::convert_tools(&[tool]);
assert_eq!(result.len(), 1);
assert_eq!(result[0].name, "search_files");
assert_eq!(result[0].description, "search_files description");
assert_eq!(
result[0].input_schema,
json!({"type": "object", "properties": {}})
);
}
#[test]
fn test_convert_tools_multiple() {
let tools = vec![make_tool_def("read_file"), make_tool_def("write_file")];
let result = AnthropicProvider::convert_tools(&tools);
assert_eq!(result.len(), 2);
assert_eq!(result[0].name, "read_file");
assert_eq!(result[1].name, "write_file");
}
// ── convert_messages ─────────────────────────────────────────────────────
#[test]
fn test_convert_messages_user() {
let msgs = vec![user_msg("Hello")];
let result = AnthropicProvider::convert_messages(&msgs);
assert_eq!(result.len(), 1);
assert_eq!(result[0].role, "user");
match &result[0].content {
AnthropicContent::Text(t) => assert_eq!(t, "Hello"),
_ => panic!("Expected text content"),
}
}
#[test]
fn test_convert_messages_system_skipped() {
let msgs = vec![system_msg("You are helpful"), user_msg("Hi")];
let result = AnthropicProvider::convert_messages(&msgs);
assert_eq!(result.len(), 1);
assert_eq!(result[0].role, "user");
}
#[test]
fn test_convert_messages_assistant_text() {
let msgs = vec![assistant_msg("I can help with that")];
let result = AnthropicProvider::convert_messages(&msgs);
assert_eq!(result.len(), 1);
assert_eq!(result[0].role, "assistant");
match &result[0].content {
AnthropicContent::Text(t) => assert_eq!(t, "I can help with that"),
_ => panic!("Expected text content"),
}
}
#[test]
fn test_convert_messages_assistant_with_tool_calls_no_content() {
let msgs = vec![Message {
role: Role::Assistant,
content: String::new(),
tool_calls: Some(vec![ToolCall {
id: Some("toolu_abc".to_string()),
kind: "function".to_string(),
function: FunctionCall {
name: "search_files".to_string(),
arguments: r#"{"pattern": "*.rs"}"#.to_string(),
},
}]),
tool_call_id: None,
}];
let result = AnthropicProvider::convert_messages(&msgs);
assert_eq!(result.len(), 1);
assert_eq!(result[0].role, "assistant");
match &result[0].content {
AnthropicContent::Blocks(blocks) => {
assert_eq!(blocks.len(), 1);
match &blocks[0] {
AnthropicContentBlock::ToolUse { id, name, .. } => {
assert_eq!(id, "toolu_abc");
assert_eq!(name, "search_files");
}
_ => panic!("Expected ToolUse block"),
}
}
_ => panic!("Expected blocks content"),
}
}
#[test]
fn test_convert_messages_assistant_with_tool_calls_and_content() {
let msgs = vec![Message {
role: Role::Assistant,
content: "Let me search for that".to_string(),
tool_calls: Some(vec![ToolCall {
id: Some("toolu_xyz".to_string()),
kind: "function".to_string(),
function: FunctionCall {
name: "read_file".to_string(),
arguments: r#"{"path": "main.rs"}"#.to_string(),
},
}]),
tool_call_id: None,
}];
let result = AnthropicProvider::convert_messages(&msgs);
assert_eq!(result.len(), 1);
match &result[0].content {
AnthropicContent::Blocks(blocks) => {
assert_eq!(blocks.len(), 2);
match &blocks[0] {
AnthropicContentBlock::Text { text } => {
assert_eq!(text, "Let me search for that");
}
_ => panic!("Expected Text block first"),
}
match &blocks[1] {
AnthropicContentBlock::ToolUse { id, name, .. } => {
assert_eq!(id, "toolu_xyz");
assert_eq!(name, "read_file");
}
_ => panic!("Expected ToolUse block second"),
}
}
_ => panic!("Expected blocks content"),
}
}
#[test]
fn test_convert_messages_assistant_tool_call_invalid_json_args() {
// Invalid JSON args fall back to {}
let msgs = vec![Message {
role: Role::Assistant,
content: String::new(),
tool_calls: Some(vec![ToolCall {
id: None,
kind: "function".to_string(),
function: FunctionCall {
name: "my_tool".to_string(),
arguments: "not valid json".to_string(),
},
}]),
tool_call_id: None,
}];
let result = AnthropicProvider::convert_messages(&msgs);
match &result[0].content {
AnthropicContent::Blocks(blocks) => match &blocks[0] {
AnthropicContentBlock::ToolUse { input, .. } => {
assert_eq!(*input, json!({}));
}
_ => panic!("Expected ToolUse block"),
},
_ => panic!("Expected blocks"),
}
}
#[test]
fn test_convert_messages_assistant_tool_call_no_id_generates_uuid() {
let msgs = vec![Message {
role: Role::Assistant,
content: String::new(),
tool_calls: Some(vec![ToolCall {
id: None, // no id provided
kind: "function".to_string(),
function: FunctionCall {
name: "my_tool".to_string(),
arguments: "{}".to_string(),
},
}]),
tool_call_id: None,
}];
let result = AnthropicProvider::convert_messages(&msgs);
match &result[0].content {
AnthropicContent::Blocks(blocks) => match &blocks[0] {
AnthropicContentBlock::ToolUse { id, .. } => {
assert!(!id.is_empty(), "Should have generated a UUID");
}
_ => panic!("Expected ToolUse block"),
},
_ => panic!("Expected blocks"),
}
}
#[test]
fn test_convert_messages_tool_role() {
let msgs = vec![Message {
role: Role::Tool,
content: "file content here".to_string(),
tool_calls: None,
tool_call_id: Some("toolu_123".to_string()),
}];
let result = AnthropicProvider::convert_messages(&msgs);
assert_eq!(result.len(), 1);
assert_eq!(result[0].role, "user");
match &result[0].content {
AnthropicContent::Blocks(blocks) => {
assert_eq!(blocks.len(), 1);
match &blocks[0] {
AnthropicContentBlock::ToolResult {
tool_use_id,
content,
} => {
assert_eq!(tool_use_id, "toolu_123");
assert_eq!(content, "file content here");
}
_ => panic!("Expected ToolResult block"),
}
}
_ => panic!("Expected blocks content"),
}
}
#[test]
fn test_convert_messages_tool_role_no_id_defaults_empty() {
let msgs = vec![Message {
role: Role::Tool,
content: "result".to_string(),
tool_calls: None,
tool_call_id: None,
}];
let result = AnthropicProvider::convert_messages(&msgs);
match &result[0].content {
AnthropicContent::Blocks(blocks) => match &blocks[0] {
AnthropicContentBlock::ToolResult { tool_use_id, .. } => {
assert_eq!(tool_use_id, "");
}
_ => panic!("Expected ToolResult block"),
},
_ => panic!("Expected blocks"),
}
}
#[test]
fn test_convert_messages_mixed_roles() {
let msgs = vec![
system_msg("Be helpful"),
user_msg("What is the time?"),
assistant_msg("I can check that."),
];
let result = AnthropicProvider::convert_messages(&msgs);
// System is skipped
assert_eq!(result.len(), 2);
assert_eq!(result[0].role, "user");
assert_eq!(result[1].role, "assistant");
}
// ── extract_system_prompt ─────────────────────────────────────────────────
#[test]
fn test_extract_system_prompt_no_messages() {
let msgs: Vec<Message> = vec![];
let prompt = AnthropicProvider::extract_system_prompt(&msgs);
assert!(prompt.is_empty());
}
#[test]
fn test_extract_system_prompt_no_system_messages() {
let msgs = vec![user_msg("Hello"), assistant_msg("Hi there")];
let prompt = AnthropicProvider::extract_system_prompt(&msgs);
assert!(prompt.is_empty());
}
#[test]
fn test_extract_system_prompt_single() {
let msgs = vec![system_msg("You are a helpful assistant"), user_msg("Hi")];
let prompt = AnthropicProvider::extract_system_prompt(&msgs);
assert_eq!(prompt, "You are a helpful assistant");
}
#[test]
fn test_extract_system_prompt_multiple_joined() {
let msgs = vec![
system_msg("First instruction"),
system_msg("Second instruction"),
user_msg("Hello"),
];
let prompt = AnthropicProvider::extract_system_prompt(&msgs);
assert_eq!(prompt, "First instruction\n\nSecond instruction");
}
// ── chat_stream (HTTP mocked) ─────────────────────────────────────────────
#[tokio::test]
async fn test_chat_stream_text_response() {
let mut server = mockito::Server::new_async().await;
let delta1 = json!({
"type": "content_block_delta",
"delta": {"type": "text_delta", "text": "Hello"}
});
let delta2 = json!({
"type": "content_block_delta",
"delta": {"type": "text_delta", "text": " world"}
});
let body = format!("data: {delta1}\ndata: {delta2}\ndata: [DONE]\n");
let _m = server
.mock("POST", "/v1/messages")
.with_status(200)
.with_header("content-type", "text/event-stream")
.with_body(body)
.create_async()
.await;
let provider = AnthropicProvider::new_with_url(
"test-key".to_string(),
format!("{}/v1/messages", server.url()),
);
let (_tx, mut cancel_rx) = tokio::sync::watch::channel(false);
let mut tokens = Vec::<String>::new();
let result = provider
.chat_stream(
"claude-3-5-sonnet-20241022",
&[user_msg("Hello")],
&[],
&mut cancel_rx,
|t| tokens.push(t.to_string()),
|_| {},
)
.await;
assert!(result.is_ok());
let response = result.unwrap();
assert_eq!(response.content, Some("Hello world".to_string()));
assert!(response.tool_calls.is_none());
assert_eq!(tokens, vec!["Hello", " world"]);
}
#[tokio::test]
async fn test_chat_stream_error_response() {
let mut server = mockito::Server::new_async().await;
let _m = server
.mock("POST", "/v1/messages")
.with_status(401)
.with_body(r#"{"error":{"type":"authentication_error","message":"Invalid API key"}}"#)
.create_async()
.await;
let provider = AnthropicProvider::new_with_url(
"bad-key".to_string(),
format!("{}/v1/messages", server.url()),
);
let (_tx, mut cancel_rx) = tokio::sync::watch::channel(false);
let result = provider
.chat_stream(
"claude-3-5-sonnet-20241022",
&[user_msg("Hello")],
&[],
&mut cancel_rx,
|_| {},
|_| {},
)
.await;
assert!(result.is_err());
assert!(result.unwrap_err().contains("401"));
}
#[tokio::test]
async fn test_chat_stream_tool_use_response() {
let mut server = mockito::Server::new_async().await;
let start_event = json!({
"type": "content_block_start",
"content_block": {"type": "tool_use", "id": "toolu_abc", "name": "search_files"}
});
let delta_event = json!({
"type": "content_block_delta",
"delta": {"type": "input_json_delta", "partial_json": "{}"}
});
let stop_event = json!({"type": "content_block_stop"});
let body = format!(
"data: {start_event}\ndata: {delta_event}\ndata: {stop_event}\ndata: [DONE]\n"
);
let _m = server
.mock("POST", "/v1/messages")
.with_status(200)
.with_header("content-type", "text/event-stream")
.with_body(body)
.create_async()
.await;
let provider = AnthropicProvider::new_with_url(
"test-key".to_string(),
format!("{}/v1/messages", server.url()),
);
let (_tx, mut cancel_rx) = tokio::sync::watch::channel(false);
let mut activities = Vec::<String>::new();
let result = provider
.chat_stream(
"claude-3-5-sonnet-20241022",
&[user_msg("Find Rust files")],
&[make_tool_def("search_files")],
&mut cancel_rx,
|_| {},
|a| activities.push(a.to_string()),
)
.await;
assert!(result.is_ok());
let response = result.unwrap();
assert!(response.content.is_none());
let tool_calls = response.tool_calls.expect("Expected tool calls");
assert_eq!(tool_calls.len(), 1);
assert_eq!(tool_calls[0].id, Some("toolu_abc".to_string()));
assert_eq!(tool_calls[0].function.name, "search_files");
assert_eq!(activities, vec!["search_files"]);
}
#[tokio::test]
async fn test_chat_stream_includes_system_prompt() {
let mut server = mockito::Server::new_async().await;
let delta = json!({
"type": "content_block_delta",
"delta": {"type": "text_delta", "text": "ok"}
});
let body = format!("data: {delta}\ndata: [DONE]\n");
let _m = server
.mock("POST", "/v1/messages")
.with_status(200)
.with_header("content-type", "text/event-stream")
.with_body(body)
.create_async()
.await;
let provider = AnthropicProvider::new_with_url(
"test-key".to_string(),
format!("{}/v1/messages", server.url()),
);
let (_tx, mut cancel_rx) = tokio::sync::watch::channel(false);
let messages = vec![system_msg("Be concise"), user_msg("Hello")];
let result = provider
.chat_stream(
"claude-3-5-sonnet-20241022",
&messages,
&[],
&mut cancel_rx,
|_| {},
|_| {},
)
.await;
assert!(result.is_ok());
assert_eq!(result.unwrap().content, Some("ok".to_string()));
}
#[tokio::test]
async fn test_chat_stream_empty_response_gives_none_content() {
let mut server = mockito::Server::new_async().await;
let _m = server
.mock("POST", "/v1/messages")
.with_status(200)
.with_header("content-type", "text/event-stream")
.with_body("data: [DONE]\n")
.create_async()
.await;
let provider = AnthropicProvider::new_with_url(
"test-key".to_string(),
format!("{}/v1/messages", server.url()),
);
let (_tx, mut cancel_rx) = tokio::sync::watch::channel(false);
let result = provider
.chat_stream(
"claude-3-5-sonnet-20241022",
&[user_msg("Hello")],
&[],
&mut cancel_rx,
|_| {},
|_| {},
)
.await;
assert!(result.is_ok());
let response = result.unwrap();
assert!(response.content.is_none());
assert!(response.tool_calls.is_none());
}
}
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pub mod anthropic;
pub mod claude_code;
pub mod ollama;
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use crate::llm::types::{
CompletionResponse, FunctionCall, Message, ModelProvider, Role, ToolCall, ToolDefinition,
};
use async_trait::async_trait;
use futures::StreamExt;
use serde::{Deserialize, Serialize};
use serde_json::Value;
pub struct OllamaProvider {
base_url: String,
}
impl OllamaProvider {
pub fn new(base_url: String) -> Self {
Self { base_url }
}
pub async fn get_models(base_url: &str) -> Result<Vec<String>, String> {
let client = reqwest::Client::new();
let url = format!("{}/api/tags", base_url.trim_end_matches('/'));
let res = client
.get(&url)
.send()
.await
.map_err(|e| format!("Request failed: {}", e))?;
if !res.status().is_success() {
let status = res.status();
let text = res.text().await.unwrap_or_default();
return Err(format!("Ollama API error {}: {}", status, text));
}
let body: OllamaTagsResponse = res
.json()
.await
.map_err(|e| format!("Failed to parse response: {}", e))?;
Ok(body.models.into_iter().map(|m| m.name).collect())
}
/// Streaming chat that calls `on_token` for each token chunk.
pub async fn chat_stream<F>(
&self,
model: &str,
messages: &[Message],
tools: &[ToolDefinition],
cancel_rx: &mut tokio::sync::watch::Receiver<bool>,
mut on_token: F,
) -> Result<CompletionResponse, String>
where
F: FnMut(&str) + Send,
{
let client = reqwest::Client::new();
let url = format!("{}/api/chat", self.base_url.trim_end_matches('/'));
let ollama_messages: Vec<OllamaRequestMessage> = messages
.iter()
.map(|m| {
let tool_calls = m.tool_calls.as_ref().map(|calls| {
calls
.iter()
.map(|tc| {
let args_val: Value = serde_json::from_str(&tc.function.arguments)
.unwrap_or(Value::String(tc.function.arguments.clone()));
OllamaRequestToolCall {
kind: tc.kind.clone(),
function: OllamaRequestFunctionCall {
name: tc.function.name.clone(),
arguments: args_val,
},
}
})
.collect()
});
OllamaRequestMessage {
role: m.role.clone(),
content: m.content.clone(),
tool_calls,
tool_call_id: m.tool_call_id.clone(),
}
})
.collect();
let request_body = OllamaRequest {
model,
messages: ollama_messages,
stream: true,
tools,
};
let res = client
.post(&url)
.json(&request_body)
.send()
.await
.map_err(|e| format!("Request failed: {}", e))?;
if !res.status().is_success() {
let status = res.status();
let text = res.text().await.unwrap_or_default();
return Err(format!("Ollama API error {}: {}", status, text));
}
let mut stream = res.bytes_stream();
let mut buffer = String::new();
let mut accumulated_content = String::new();
let mut final_tool_calls: Option<Vec<ToolCall>> = None;
loop {
if *cancel_rx.borrow() {
return Err("Chat cancelled by user".to_string());
}
let chunk_result = tokio::select! {
chunk = stream.next() => {
match chunk {
Some(c) => c,
None => break,
}
}
_ = cancel_rx.changed() => {
if *cancel_rx.borrow() {
return Err("Chat cancelled by user".to_string());
} else {
continue;
}
}
};
let chunk = chunk_result.map_err(|e| format!("Stream error: {}", e))?;
buffer.push_str(&String::from_utf8_lossy(&chunk));
while let Some(newline_pos) = buffer.find('\n') {
let line = buffer[..newline_pos].trim().to_string();
buffer = buffer[newline_pos + 1..].to_string();
if line.is_empty() {
continue;
}
let stream_msg: OllamaStreamResponse =
serde_json::from_str(&line).map_err(|e| format!("JSON parse error: {}", e))?;
if !stream_msg.message.content.is_empty() {
accumulated_content.push_str(&stream_msg.message.content);
on_token(&stream_msg.message.content);
}
if let Some(tool_calls) = stream_msg.message.tool_calls {
final_tool_calls = Some(
tool_calls
.into_iter()
.map(|tc| ToolCall {
id: None,
kind: "function".to_string(),
function: FunctionCall {
name: tc.function.name,
arguments: tc.function.arguments.to_string(),
},
})
.collect(),
);
}
if stream_msg.done {
break;
}
}
}
Ok(CompletionResponse {
content: if accumulated_content.is_empty() {
None
} else {
Some(accumulated_content)
},
tool_calls: final_tool_calls,
session_id: None,
})
}
}
#[derive(Deserialize)]
struct OllamaTagsResponse {
models: Vec<OllamaModelTag>,
}
#[derive(Deserialize)]
struct OllamaModelTag {
name: String,
}
#[derive(Serialize)]
struct OllamaRequest<'a> {
model: &'a str,
messages: Vec<OllamaRequestMessage>,
stream: bool,
#[serde(skip_serializing_if = "is_empty_tools")]
tools: &'a [ToolDefinition],
}
fn is_empty_tools(tools: &&[ToolDefinition]) -> bool {
tools.is_empty()
}
#[derive(Serialize)]
struct OllamaRequestMessage {
role: Role,
content: String,
#[serde(skip_serializing_if = "Option::is_none")]
tool_calls: Option<Vec<OllamaRequestToolCall>>,
#[serde(skip_serializing_if = "Option::is_none")]
tool_call_id: Option<String>,
}
#[derive(Serialize)]
struct OllamaRequestToolCall {
function: OllamaRequestFunctionCall,
#[serde(rename = "type")]
kind: String,
}
#[derive(Serialize)]
struct OllamaRequestFunctionCall {
name: String,
arguments: Value,
}
#[derive(Deserialize)]
struct OllamaStreamResponse {
message: OllamaStreamMessage,
done: bool,
}
#[derive(Deserialize)]
struct OllamaStreamMessage {
#[serde(default)]
content: String,
#[serde(default)]
tool_calls: Option<Vec<OllamaResponseToolCall>>,
}
#[derive(Deserialize)]
struct OllamaResponseToolCall {
function: OllamaResponseFunctionCall,
}
#[derive(Deserialize)]
struct OllamaResponseFunctionCall {
name: String,
arguments: Value,
}
#[async_trait]
impl ModelProvider for OllamaProvider {
async fn chat(
&self,
_model: &str,
_messages: &[Message],
_tools: &[ToolDefinition],
) -> Result<CompletionResponse, String> {
Err("Non-streaming Ollama chat not implemented for server".to_string())
}
}