minni 0.1.1

Local memory, task, and codebase indexing tool for AI agents
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52

use anyhow::{Context, Result};
use chrono::Utc;
use serde::{Deserialize, Serialize};
use std::fs;
use std::path::Path;

/// Serialized index metadata.
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct IndexMetadata {
    pub schema_signature: String,
    pub model_id: String,
    pub created_at: String,
}

impl IndexMetadata {
    pub fn expected(schema_signature: String, model_id: &str) -> Self {
        Self {
            schema_signature,
            model_id: model_id.to_string(),
            created_at: Utc::now().to_rfc3339(),
        }
    }

    pub fn matches(&self, other: &IndexMetadata) -> bool {
        self.schema_signature == other.schema_signature && self.model_id == other.model_id
    }
}

/// Read index metadata if present.
pub fn read_metadata(path: &Path) -> Result<Option<IndexMetadata>> {
    if !path.exists() {
        return Ok(None);
    }

    let content = fs::read_to_string(path)
        .with_context(|| format!("Failed to read index metadata at {:?}", path))?;
    match serde_json::from_str::<IndexMetadata>(&content) {
        Ok(meta) => Ok(Some(meta)),
        Err(_) => Ok(None),
    }
}

/// Write index metadata to disk.
pub fn write_metadata(path: &Path, meta: &IndexMetadata) -> Result<()> {
    if let Some(parent) = path.parent() {
        fs::create_dir_all(parent)?;
    }
    let content = serde_json::to_string_pretty(meta)?;
    fs::write(path, content)
        .with_context(|| format!("Failed to write index metadata at {:?}", path))?;
    Ok(())
}