mirror of
https://github.com/logos-co/nomos-specs.git
synced 2025-01-09 23:26:01 +00:00
53b8be7a05
* Tests for da api full flow * Fix test issues * Da api ext tests (#85) * Index store links blob to cert_id * Tests for multiple indexes pointing to the same blob * Test multiple indexes to the same blob in the full flow * Update bytes_per_chunk to 31 bytes --------- Co-authored-by: Daniel Sanchez Quiros <sanchez.quiros.daniel@gmail.com>
59 lines
1.8 KiB
Python
59 lines
1.8 KiB
Python
from abc import ABC, abstractmethod
|
|
from dataclasses import dataclass
|
|
from typing import Optional, List, Sequence
|
|
|
|
from da.common import Certificate
|
|
from da.verifier import DABlob
|
|
|
|
|
|
@dataclass
|
|
class Metadata:
|
|
# app identifier
|
|
app_id: bytes
|
|
# index of VID certificate blob
|
|
index: int
|
|
|
|
|
|
@dataclass
|
|
class VID:
|
|
# da certificate id
|
|
cert_id: bytes
|
|
# application + index information
|
|
metadata: Metadata
|
|
|
|
|
|
class BlobStore(ABC):
|
|
@abstractmethod
|
|
def add(self, certificate: Certificate, metadata: Metadata):
|
|
"""
|
|
Raises: ValueError if there is already a registered certificate fot the given metadata
|
|
"""
|
|
pass
|
|
|
|
@abstractmethod
|
|
def get_multiple(self, app_id: bytes, indexes: Sequence[int]) -> List[Optional[DABlob]]:
|
|
pass
|
|
|
|
|
|
class DAApi:
|
|
def __init__(self, bs: BlobStore):
|
|
self.store = bs
|
|
|
|
def write(self, certificate: Certificate, metadata: Metadata):
|
|
"""
|
|
Write method should be used by a service that is able to retrieve verified certificates
|
|
from the latest Block. Once a certificate is retrieved, api creates a relation between
|
|
the blob of an original data, certificate and index for the app_id of the certificate.
|
|
Raises: ValueError if there is already a registered certificate for a given metadata
|
|
"""
|
|
self.store.add(certificate, metadata)
|
|
|
|
def read(self, app_id, indexes) -> List[Optional[DABlob]]:
|
|
"""
|
|
Read method should accept only `app_id` and a list of indexes. The returned list of
|
|
blobs should be ordered in the same sequence as `indexes` in a request.
|
|
If node does not have the blob for some indexes, then it should add None object as an
|
|
item.
|
|
"""
|
|
return self.store.get_multiple(app_id, indexes)
|