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| 1 | +use rohas_telemetry::error::{Result, TelemetryError}; |
| 2 | +use rohas_telemetry::storage::{IterateCallback, StorageAdapter}; |
| 3 | +use async_trait::async_trait; |
| 4 | +use rocksdb::{DB, IteratorMode, Options}; |
| 5 | +use std::path::PathBuf; |
| 6 | +use std::sync::Arc; |
| 7 | +use tokio::sync::RwLock; |
| 8 | + |
| 9 | +/// RocksDB storage adapter for telemetry data |
| 10 | +pub struct RocksDBAdapter { |
| 11 | + db: Arc<RwLock<DB>>, |
| 12 | +} |
| 13 | + |
| 14 | +impl RocksDBAdapter { |
| 15 | + pub async fn new(path: PathBuf) -> Result<Self> { |
| 16 | + if let Some(parent) = path.parent() { |
| 17 | + std::fs::create_dir_all(parent) |
| 18 | + .map_err(|e| TelemetryError::Io(e))?; |
| 19 | + } |
| 20 | + |
| 21 | + let mut opts = Options::default(); |
| 22 | + opts.create_if_missing(true); |
| 23 | + opts.create_missing_column_families(true); |
| 24 | + |
| 25 | + opts.set_write_buffer_size(64 * 1024 * 1024); // 64MB |
| 26 | + opts.set_max_write_buffer_number(3); |
| 27 | + opts.set_target_file_size_base(64 * 1024 * 1024); // 64MB |
| 28 | + |
| 29 | + opts.set_compression_type(rocksdb::DBCompressionType::Lz4); |
| 30 | + |
| 31 | + opts.optimize_for_point_lookup(1024); |
| 32 | + |
| 33 | + let db = DB::open(&opts, &path) |
| 34 | + .map_err(|e| TelemetryError::StorageBackend(e.to_string()))?; |
| 35 | + |
| 36 | + Ok(Self { |
| 37 | + db: Arc::new(RwLock::new(db)), |
| 38 | + }) |
| 39 | + } |
| 40 | +} |
| 41 | + |
| 42 | +#[async_trait] |
| 43 | +impl StorageAdapter for RocksDBAdapter { |
| 44 | + async fn put(&self, key: &[u8], value: &[u8]) -> Result<()> { |
| 45 | + let db = self.db.write().await; |
| 46 | + db.put(key, value) |
| 47 | + .map_err(|e| TelemetryError::StorageBackend(e.to_string()))?; |
| 48 | + Ok(()) |
| 49 | + } |
| 50 | + |
| 51 | + async fn get(&self, key: &[u8]) -> Result<Option<Vec<u8>>> { |
| 52 | + let db = self.db.read().await; |
| 53 | + match db.get(key) { |
| 54 | + Ok(Some(value)) => Ok(Some(value)), |
| 55 | + Ok(None) => Ok(None), |
| 56 | + Err(e) => Err(TelemetryError::StorageBackend(e.to_string())), |
| 57 | + } |
| 58 | + } |
| 59 | + |
| 60 | + async fn delete(&self, key: &[u8]) -> Result<()> { |
| 61 | + let db = self.db.write().await; |
| 62 | + db.delete(key) |
| 63 | + .map_err(|e| TelemetryError::StorageBackend(e.to_string()))?; |
| 64 | + Ok(()) |
| 65 | + } |
| 66 | + |
| 67 | + async fn get_by_prefix(&self, prefix: &[u8]) -> Result<Vec<Vec<u8>>> { |
| 68 | + let db = self.db.read().await; |
| 69 | + let iter = db.iterator(IteratorMode::From(prefix, rocksdb::Direction::Forward)); |
| 70 | + |
| 71 | + let mut keys = Vec::new(); |
| 72 | + for item in iter { |
| 73 | + let (key, _) = item.map_err(|e| TelemetryError::StorageBackend(e.to_string()))?; |
| 74 | + if key.starts_with(prefix) { |
| 75 | + keys.push(key.to_vec()); |
| 76 | + } else { |
| 77 | + break; |
| 78 | + } |
| 79 | + } |
| 80 | + |
| 81 | + Ok(keys) |
| 82 | + } |
| 83 | + |
| 84 | + async fn iterate(&self, prefix: &[u8], mut callback: Box<dyn IterateCallback>) -> Result<()> { |
| 85 | + let db = self.db.read().await; |
| 86 | + let iter = db.iterator(IteratorMode::From(prefix, rocksdb::Direction::Forward)); |
| 87 | + |
| 88 | + for item in iter { |
| 89 | + let (key, value) = item.map_err(|e| TelemetryError::StorageBackend(e.to_string()))?; |
| 90 | + if key.starts_with(prefix) { |
| 91 | + let should_continue = callback.call(&key, &value)?; |
| 92 | + if !should_continue { |
| 93 | + break; |
| 94 | + } |
| 95 | + } else { |
| 96 | + break; |
| 97 | + } |
| 98 | + } |
| 99 | + |
| 100 | + Ok(()) |
| 101 | + } |
| 102 | +} |
| 103 | + |
| 104 | +#[cfg(test)] |
| 105 | +mod tests { |
| 106 | + use super::*; |
| 107 | + use tempfile::TempDir; |
| 108 | + |
| 109 | + #[tokio::test] |
| 110 | + async fn test_rocksdb_adapter() { |
| 111 | + let temp_dir = TempDir::new().unwrap(); |
| 112 | + let db_path = temp_dir.path().join("test_db"); |
| 113 | + |
| 114 | + let adapter = RocksDBAdapter::new(db_path).await.unwrap(); |
| 115 | + |
| 116 | + adapter.put(b"test:key1", b"value1").await.unwrap(); |
| 117 | + let value = adapter.get(b"test:key1").await.unwrap(); |
| 118 | + assert_eq!(value, Some(b"value1".to_vec())); |
| 119 | + |
| 120 | + adapter.delete(b"test:key1").await.unwrap(); |
| 121 | + let value = adapter.get(b"test:key1").await.unwrap(); |
| 122 | + assert_eq!(value, None); |
| 123 | + |
| 124 | + adapter.put(b"test:key1", b"value1").await.unwrap(); |
| 125 | + adapter.put(b"test:key2", b"value2").await.unwrap(); |
| 126 | + adapter.put(b"other:key1", b"value3").await.unwrap(); |
| 127 | + |
| 128 | + let keys = adapter.get_by_prefix(b"test:").await.unwrap(); |
| 129 | + assert_eq!(keys.len(), 2); |
| 130 | + } |
| 131 | +} |
| 132 | + |
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