engram/
error.rs

1//! Error types for Engram
2
3use thiserror::Error;
4
5/// Result type alias for Engram operations
6pub type Result<T> = std::result::Result<T, EngramError>;
7
8/// Main error type for Engram
9#[derive(Error, Debug)]
10pub enum EngramError {
11    #[error("Database error: {0}")]
12    Database(#[from] rusqlite::Error),
13
14    #[error("Storage error: {0}")]
15    Storage(String),
16
17    #[error("Memory not found: {0}")]
18    NotFound(i64),
19
20    #[error("Invalid input: {0}")]
21    InvalidInput(String),
22
23    #[error("Embedding error: {0}")]
24    Embedding(String),
25
26    #[error("Search error: {0}")]
27    Search(String),
28
29    #[error("Sync error: {0}")]
30    Sync(String),
31
32    #[error("Cloud storage error: {0}")]
33    CloudStorage(String),
34
35    #[error("Encryption error: {0}")]
36    Encryption(String),
37
38    #[error("Serialization error: {0}")]
39    Serialization(#[from] serde_json::Error),
40
41    #[error("IO error: {0}")]
42    Io(#[from] std::io::Error),
43
44    #[error("HTTP request error: {0}")]
45    #[cfg(feature = "openai")]
46    Http(#[from] reqwest::Error),
47
48    #[error("HTTP request error: {0}")]
49    #[cfg(not(feature = "openai"))]
50    Http(String),
51
52    #[error("Configuration error: {0}")]
53    Config(String),
54
55    #[error("Conflict: {0}")]
56    Conflict(String),
57
58    #[error("Duplicate memory detected (existing_id={existing_id}): {message}")]
59    Duplicate { existing_id: i64, message: String },
60
61    #[error("Authentication error: {0}")]
62    Auth(String),
63
64    #[error("Unauthorized: {0}")]
65    Unauthorized(String),
66
67    #[error("Rate limited: retry after {0} seconds")]
68    RateLimited(u64),
69
70    #[error("Internal error: {0}")]
71    Internal(String),
72}
73
74impl EngramError {
75    /// Check if error is retryable
76    pub fn is_retryable(&self) -> bool {
77        matches!(
78            self,
79            EngramError::Sync(_)
80                | EngramError::CloudStorage(_)
81                | EngramError::Http(_)
82                | EngramError::RateLimited(_)
83        )
84    }
85
86    /// Get error code for MCP protocol
87    pub fn code(&self) -> i64 {
88        match self {
89            EngramError::NotFound(_) => -32001,
90            EngramError::InvalidInput(_) => -32602,
91            EngramError::Auth(_) => -32003,
92            EngramError::Unauthorized(_) => -32003,
93            EngramError::RateLimited(_) => -32004,
94            EngramError::Conflict(_) => -32005,
95            EngramError::Duplicate { .. } => -32006,
96            _ => -32000,
97        }
98    }
99}
engram/error.rs

engram/
error.rs
