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use data_encoding::BASE64;
use std::{
collections::HashMap,
sync::{Arc, RwLock},
};
use tracing::instrument;
use crate::{proto, Error};
use super::BlobService;
#[derive(Clone)]
pub struct MemoryBlobService {
db: Arc<RwLock<HashMap<Vec<u8>, proto::BlobMeta>>>,
}
impl MemoryBlobService {
pub fn new() -> Self {
let db = Arc::new(RwLock::new(HashMap::default()));
Self { db }
}
}
impl BlobService for MemoryBlobService {
#[instrument(skip(self, req), fields(blob.digest=BASE64.encode(&req.digest)))]
fn stat(&self, req: &proto::StatBlobRequest) -> Result<Option<proto::BlobMeta>, Error> {
if req.include_bao {
todo!("not implemented yet")
}
let db = self.db.read().unwrap();
// if include_chunks is also false, the user only wants to know if the
// blob is present at all.
if !req.include_chunks {
Ok(if db.contains_key(&req.digest) {
Some(proto::BlobMeta::default())
} else {
None
})
} else {
match db.get(&req.digest) {
None => Ok(None),
Some(blob_meta) => Ok(Some(blob_meta.clone())),
}
}
}
#[instrument(skip(self, blob_meta, blob_digest), fields(blob.digest = BASE64.encode(blob_digest)))]
fn put(&self, blob_digest: &[u8], blob_meta: proto::BlobMeta) -> Result<(), Error> {
let mut db = self.db.write().unwrap();
db.insert(blob_digest.to_vec(), blob_meta);
Ok(())
// TODO: make sure all callers make sure the chunks exist.
// TODO: where should we calculate the bao?
}
}
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