swarm-advanced-features

name	swarm-advanced-features
description	Export/import, versioning, migrations, and backup/restore. Use when adding enterprise/production features.

Swarm: Advanced Features

Workflow

1. Design format specification (JSON schema or binary protocol)
2. Implement streaming for large datasets
3. Add migration runner with version tracking
4. Implement backup/restore with integrity checks
5. Add tests for all operations
6. Document usage and recovery procedures

Export/Import

pub async fn export_json(&self, path: &Path) -> Result<usize> {
    let file = File::create(path)?;
    let writer = BufWriter::new(file);
    let mut count = 0;
    
    // Stream concepts in chunks
    for chunk in self.singularity.concepts().chunks(1000) {
        for concept in chunk {
            serde_json::to_writer(&mut writer, concept)?;
            count += 1;
        }
    }
    
    Ok(count)
}

Versioning Schema

CREATE TABLE concept_versions (
    concept_id TEXT NOT NULL,
    version INTEGER NOT NULL,
    vector BLOB NOT NULL,
    metadata TEXT NOT NULL,
    modified_at INTEGER NOT NULL,
    PRIMARY KEY (concept_id, version),
    FOREIGN KEY (concept_id) REFERENCES concepts(id) ON DELETE CASCADE
);

Migration Runner

pub struct Migration {
    version: u32,
    up: &'static str,
    down: &'static str,
}

pub async fn run_migrations(&self, target: u32) -> Result<()> {
    let current = self.get_schema_version().await?;
    
    for migration in &MIGRATIONS[current as usize..target as usize] {
        let conn = self.connect().await?;
        conn.execute(migration.up, ()).await?;
        self.set_schema_version(migration.version).await?;
    }
    
    Ok(())
}

Backup/Restore

pub async fn backup(&self, path: &Path) -> Result<()> {
    // SQLite: VACUUM INTO
    let conn = self.connect().await?;
    conn.execute(&format!("VACUUM INTO '{}'", path.display()), ()).await?;
    self.verify_backup(path).await?;
    Ok(())
}

Format Specification

{
  "version": "0.1.0",
  "exported_at": 1700000000,
  "schema_version": 5,
  "concepts": [...],
  "associations": [...],
  "concept_versions": [...]
}

LOC Constraint

All files must remain ≤ 500 lines. Refactor to new modules if needed.