tinyagents 2.1.1

A durable agent + graph harness for Rust.
Documentation 
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use chrono::{DateTime, Utc};
use serde::{Deserialize, Serialize};

#[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize, Deserialize)]
#[serde(rename_all = "snake_case")]
pub enum SessionStatus {
    Running,
    Completed,
    Failed,
    Interrupted,
}

impl SessionStatus {
    pub fn as_str(&self) -> &'static str {
        match self {
            Self::Running => "running",
            Self::Completed => "completed",
            Self::Failed => "failed",
            Self::Interrupted => "interrupted",
        }
    }

    pub fn parse(s: &str) -> Self {
        match s {
            "completed" => Self::Completed,
            "failed" => Self::Failed,
            "interrupted" => Self::Interrupted,
            _ => Self::Running,
        }
    }
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct SessionRecord {
    pub id: String,
    pub agent_definition_id: String,
    pub agent_definition_name: String,
    pub session_key: String,
    pub parent_session_id: Option<String>,
    pub thread_id: Option<String>,
    pub source_channel: Option<String>,
    pub status: SessionStatus,
    pub model: Option<String>,
    pub turn_count: u32,
    pub input_tokens: u64,
    pub output_tokens: u64,
    pub cached_input_tokens: u64,
    pub cost_usd: f64,
    pub transcript_path: Option<String>,
    pub started_at: DateTime<Utc>,
    pub ended_at: Option<DateTime<Utc>>,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct SessionMessage {
    pub id: i64,
    pub session_id: String,
    pub role: String,
    pub content: String,
    pub model: Option<String>,
    pub input_tokens: Option<u64>,
    pub output_tokens: Option<u64>,
    pub cost_usd: Option<f64>,
    pub created_at: DateTime<Utc>,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct SessionToolCall {
    pub id: i64,
    pub session_id: String,
    pub message_id: Option<i64>,
    pub tool_name: String,
    pub tool_input: Option<String>,
    pub tool_output: Option<String>,
    pub status: String,
    pub duration_ms: Option<i64>,
    pub created_at: DateTime<Utc>,
}

#[derive(Debug, Clone, Default, Deserialize)]
#[serde(rename_all = "camelCase")]
pub struct SessionSearchParams {
    #[serde(default)]
    pub query: Option<String>,
    #[serde(default)]
    pub agent_id: Option<String>,
    #[serde(default)]
    pub tool_name: Option<String>,
    #[serde(default)]
    pub source_channel: Option<String>,
    #[serde(default)]
    pub parent_session_id: Option<String>,
    #[serde(default)]
    pub status: Option<String>,
    #[serde(default)]
    pub thread_id: Option<String>,
    #[serde(default)]
    pub limit: Option<u32>,
    #[serde(default)]
    pub offset: Option<u32>,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct SessionSearchResult {
    pub sessions: Vec<SessionRecord>,
    pub total: u64,
}