Initial Inception provider support with working completions

rig-core/src/providers/inception/client.rs

@@ -0,0 +1,91 @@
+use schemars::JsonSchema;
+use serde::{Deserialize, Serialize};
+
+use crate::{
+    agent::AgentBuilder, extractor::ExtractorBuilder,
+    providers::inception::completion::CompletionModel,
+};
+
+const INCEPTION_API_BASE_URL: &str = "https://api.inceptionlabs.ai/v1";
+
+#[derive(Clone)]
+pub struct ClientBuilder<'a> {
+    api_key: &'a str,
+    base_url: &'a str,
+}
+
+impl<'a> ClientBuilder<'a> {
+    pub fn new(api_key: &'a str) -> Self {
+        Self {
+            api_key,
+            base_url: INCEPTION_API_BASE_URL,
+        }
+    }
+
+    pub fn base_url(mut self, base_url: &'a str) -> Self {
+        self.base_url = base_url;
+        self
+    }
+
+    pub fn build(self) -> Client {
+        Client::new(self.api_key, self.base_url)
+    }
+}
+
+#[derive(Clone)]
+pub struct Client {
+    base_url: String,
+    http_client: reqwest::Client,
+}
+
+impl Client {
+    pub fn new(api_key: &str, base_url: &str) -> Self {
+        Self {
+            base_url: base_url.to_string(),
+            http_client: reqwest::Client::builder()
+                .default_headers({
+                    let mut headers = reqwest::header::HeaderMap::new();
+                    headers.insert(
+                        "Content-Type",
+                        "application/json"
+                            .parse()
+                            .expect("Content-Type should parse"),
+                    );
+                    headers.insert(
+                        "Authorization",
+                        format!("Bearer {}", api_key)
+                            .parse()
+                            .expect("Authorization should parse"),
+                    );
+                    headers
+                })
+                .build()
+                .expect("Inception reqwest client should build"),
+        }
+    }
+
+    pub fn from_env() -> Self {
+        let api_key = std::env::var("INCEPTION_API_KEY").expect("INCEPTION_API_KEY not set");
+        ClientBuilder::new(&api_key).build()
+    }
+
+    pub fn post(&self, path: &str) -> reqwest::RequestBuilder {
+        let url = format!("{}/{}", self.base_url, path).replace("//", "/");
+        self.http_client.post(url)
+    }
+
+    pub fn completion_model(&self, model: &str) -> CompletionModel {
+        CompletionModel::new(self.clone(), model)
+    }
+
+    pub fn agent(&self, model: &str) -> AgentBuilder<CompletionModel> {
+        AgentBuilder::new(self.completion_model(model))
+    }
+
+    pub fn extractor<T: JsonSchema + for<'a> Deserialize<'a> + Serialize + Send + Sync>(
+        &self,
+        model: &str,
+    ) -> ExtractorBuilder<T, CompletionModel> {
+        ExtractorBuilder::new(self.completion_model(model))
+    }
+}

rig-core/src/providers/inception/completion.rs

@@ -0,0 +1,197 @@
+use serde::{Deserialize, Serialize};
+use serde_json::json;
+
+use crate::{
+    completion::{self, CompletionError},
+    message::{self, MessageError},
+    OneOrMany,
+};
+
+use super::client::Client;
+
+// ================================================================
+// Inception Completion API
+// ================================================================
+/// `mercury-coder-small` completion model
+pub const MERCURY_CODER_SMALL: &str = "mercury-coder-small";
+
+#[derive(Debug, Deserialize)]
+pub struct CompletionResponse {
+    pub id: String,
+    pub choices: Vec<Choice>,
+    pub object: String,
+    pub created: u64,
+    pub model: String,
+    pub usage: Usage,
+}
+
+#[derive(Debug, Deserialize)]
+pub struct Choice {
+    pub index: usize,
+    pub message: Message,
+    pub finish_reason: String,
+}
+
+impl From<Choice> for completion::AssistantContent {
+    fn from(choice: Choice) -> Self {
+        completion::AssistantContent::from(&choice)
+    }
+}
+
+impl From<&Choice> for completion::AssistantContent {
+    fn from(choice: &Choice) -> Self {
+        completion::AssistantContent::Text(completion::message::Text {
+            text: choice.message.content.clone(),
+        })
+    }
+}
+
+#[derive(Debug, Deserialize, Serialize)]
+pub struct Message {
+    pub role: Role,
+    pub content: String,
+}
+
+#[derive(Debug, Deserialize, Serialize, Clone, PartialEq)]
+#[serde(rename_all = "lowercase")]
+pub enum Role {
+    User,
+    Assistant,
+}
+
+#[derive(Debug, Deserialize)]
+pub struct Usage {
+    pub prompt_tokens: u32,
+    pub completion_tokens: u32,
+    pub total_tokens: u32,
+}
+
+impl std::fmt::Display for Usage {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        write!(
+            f,
+            "Prompt tokens: {}\nCompletion tokens: {}\nTotal tokens: {}",
+            self.prompt_tokens, self.completion_tokens, self.total_tokens
+        )
+    }
+}
+
+impl TryFrom<message::Message> for Message {
+    type Error = MessageError;
+
+    fn try_from(message: message::Message) -> Result<Self, Self::Error> {
+        Ok(match message {
+            message::Message::User { content } => Message {
+                role: Role::User,
+                content: match content.first() {
+                    message::UserContent::Text(message::Text { text }) => text.clone(),
+                    _ => {
+                        return Err(MessageError::ConversionError(
+                            "User message content must be a text message".to_string(),
+                        ))
+                    }
+                },
+            },
+            message::Message::Assistant { content } => Message {
+                role: Role::Assistant,
+                content: match content.first() {
+                    message::AssistantContent::Text(message::Text { text }) => text.clone(),
+                    _ => {
+                        return Err(MessageError::ConversionError(
+                            "Assistant message content must be a text message".to_string(),
+                        ))
+                    }
+                },
+            },
+        })
+    }
+}
+
+impl TryFrom<CompletionResponse> for completion::CompletionResponse<CompletionResponse> {
+    type Error = CompletionError;
+
+    fn try_from(response: CompletionResponse) -> Result<Self, Self::Error> {
+        let content = response.choices.iter().map(Into::into).collect::<Vec<_>>();
+
+        let choice = OneOrMany::many(content).map_err(|_| {
+            CompletionError::ResponseError(
+                "Response contained no message or tool call (empty)".to_owned(),
+            )
+        })?;
+
+        Ok(completion::CompletionResponse {
+            choice,
+            raw_response: response,
+        })
+    }
+}
+
+const MAX_TOKENS: u64 = 8192;
+
+#[derive(Clone)]
+pub struct CompletionModel {
+    pub(crate) client: Client,
+    pub model: String,
+}
+
+impl CompletionModel {
+    pub fn new(client: Client, model: &str) -> Self {
+        Self {
+            client,
+            model: model.to_string(),
+        }
+    }
+}
+
+impl completion::CompletionModel for CompletionModel {
+    type Response = CompletionResponse;
+
+    #[cfg_attr(feature = "worker", worker::send)]
+    async fn completion(
+        &self,
+        completion_request: completion::CompletionRequest,
+    ) -> Result<completion::CompletionResponse<CompletionResponse>, CompletionError> {
+        let max_tokens = completion_request.max_tokens.unwrap_or(MAX_TOKENS);
+
+        let prompt_message: Message = completion_request
+            .prompt_with_context()
+            .try_into()
+            .map_err(|e: MessageError| CompletionError::RequestError(e.into()))?;
+
+        let mut messages = completion_request
+            .chat_history
+            .into_iter()
+            .map(|message| {
+                message
+                    .try_into()
+                    .map_err(|e: MessageError| CompletionError::RequestError(e.into()))
+            })
+            .collect::<Result<Vec<Message>, _>>()?;
+
+        messages.push(prompt_message);
+
+        let request = json!({
+            "model": self.model,
+            "messages": messages,
+            "max_tokens": max_tokens,
+        });
+
+        let response = self
+            .client
+            .post("/chat/completions")
+            .json(&request)
+            .send()
+            .await?;
+
+        if response.status().is_success() {
+            let response = response.json::<CompletionResponse>().await?;
+            tracing::info!(target: "rig",
+                "Inception completion token usage: {}",
+                response.usage
+            );
+            Ok(response.try_into()?)
+        } else {
+            Err(CompletionError::ProviderError(response.text().await?))
+        }
+    }
+}

rig-core/src/providers/inception/mod.rs

@@ -0,0 +1,2 @@
+pub mod client;
+pub mod completion;

rig-core/src/providers/mod.rs

@@ -11,6 +11,7 @@
 //! - DeepSeek
 //! - Azure OpenAI
 //! - Mira
+//! - Inception
 //!
 //! Each provider has its own module, which contains a `Client` implementation that can
 //! be used to initialize completion and embedding models and execute requests to those models.
@@ -54,6 +55,7 @@ pub mod gemini;
 pub mod groq;
 pub mod huggingface;
 pub mod hyperbolic;
+pub mod inception;
 pub mod mira;
 pub mod moonshot;
 pub mod ollama;