Availability Gateway

This is the StarkEx Services HTTP gateway for committee interactions.

approve_new_roots

Process committee signature for a batch.

Parameters

data– Committee signature data in message body (CommitteeSignature)

Returns

Acknowledgement.

Return type

Example

POST /availability_gateway/approve_new_roots HTTP/1.1
Host: localhost:9414
Accept: application/json

{"batch_id": 5678, "signature": "0x1256a4d7d152a0aafa2b75eb06eddbd0abb5621572fd4292",
 "member_key": "0xb2849CBc25853685bfc4815Ab51d28E810606A48",
 "claim_hash": "0x476a9f237758279caadaa21ecadd0126fe7ae99eb5c41b7cfdf1f42fd63db577"}

curl -i -X POST https://localhost:9414/availability_gateway/approve_new_roots -H "Accept: application/json" --data-raw '{"batch_id": 5678, "signature": "0x1256a4d7d152a0aafa2b75eb06eddbd0abb5621572fd4292",

 "member_key": "0xb2849CBc25853685bfc4815Ab51d28E810606A48",

 "claim_hash": "0x476a9f237758279caadaa21ecadd0126fe7ae99eb5c41b7cfdf1f42fd63db577"}'

wget -S -O- https://localhost:9414/availability_gateway/approve_new_roots --header="Accept: application/json" --post-data='{"batch_id": 5678, "signature": "0x1256a4d7d152a0aafa2b75eb06eddbd0abb5621572fd4292",

 "member_key": "0xb2849CBc25853685bfc4815Ab51d28E810606A48",

 "claim_hash": "0x476a9f237758279caadaa21ecadd0126fe7ae99eb5c41b7cfdf1f42fd63db577"}'

echo '{"batch_id": 5678, "signature": "0x1256a4d7d152a0aafa2b75eb06eddbd0abb5621572fd4292",

 "member_key": "0xb2849CBc25853685bfc4815Ab51d28E810606A48",

 "claim_hash": "0x476a9f237758279caadaa21ecadd0126fe7ae99eb5c41b7cfdf1f42fd63db577"}' | http POST https://localhost:9414/availability_gateway/approve_new_roots Accept:application/json

requests.post('https://localhost:9414/availability_gateway/approve_new_roots', headers={'Accept': 'application/json'}, data='{"batch_id": 5678, "signature": "0x1256a4d7d152a0aafa2b75eb06eddbd0abb5621572fd4292",\r\n\n "member_key": "0xb2849CBc25853685bfc4815Ab51d28E810606A48",\r\n\n "claim_hash": "0x476a9f237758279caadaa21ecadd0126fe7ae99eb5c41b7cfdf1f42fd63db577"}')

HTTP/1.1 200 OK
Content-Type: application/str

signature accepted

get_batch_data

Get the data availability information for a specific batch.

The availability information includes the ID of the previous batch in chronological order and the list of tree leaves (Validium vaults tree and orders tree) that were modified in the requested batch.

If validate_rollup is set to True, the list of rollup vault tree leaves that were modified is also returned. prev_batch_id of -1 indicates that there is no previous state.

Note that prev_batch_id might differ from batch_id - 1. This happens when a previously submitted batch is rejected on-chain.

Parameters

batch_id(int) – Batch ID to query.
validate_rollup(bool) – Boolean string (either “True” or “False”) indicating whether or not to respond with rollup vault modification data.

Returns

Batch information (StateUpdate)

Example

GET /availability_gateway/get_batch_data?batch_id=5678&validate_rollup=True HTTP/1.1
Host: localhost:9414
Accept: application/json

curl -i -X GET 'https://localhost:9414/availability_gateway/get_batch_data?batch_id=5678&validate_rollup=True' -H "Accept: application/json"

wget -S -O- 'https://localhost:9414/availability_gateway/get_batch_data?batch_id=5678&validate_rollup=True' --header="Accept: application/json"

http 'https://localhost:9414/availability_gateway/get_batch_data?batch_id=5678&validate_rollup=True' Accept:application/json

requests.get('https://localhost:9414/availability_gateway/get_batch_data?batch_id=5678&validate_rollup=True', headers={'Accept': 'application/json'})

HTTP/1.1 200 OK
Content-Type: application/json

    {
        "update": {
            "order_root": "000AB5B4CE84EB13D24D4DC89BC96BA10756A91CF180BE92E015F7941D7E",
            "orders": {
                "54850": {
                    "fulfilled_amount": "845"
                },
                "54851": {
                    "fulfilled_amount": "1975"
                }
            },
            "prev_batch_id": 5677,
            "rollup_vault_root": "DEADBEEF",
            "rollup_vaults": {
                "9223372037023444327": {
                    "balance": "9",
                    "stark_key": "0x1234",
                    "token": "0x5678"
                }
            },
            "vault_root": "037912467B7B3CC02DEEC7B56829E3AE494B8D96F4E79D6CA7CC766C64D1",
            "vaults": {
                "168668519": {
                    "balance": "300",
                    "stark_key": "0xc35327b2be68ae537e02f0d16dd81cf6baac5e02ba28d0342ec8e",
                    "token": "0x31e95e8dc9447dfb706f0dfa2d8243c832de7d8da4edd87aa8f3f0008"
                },
                "694774812": {
                    "balance": "1000",
                    "stark_key": "0x7c5a4b3c65e46bc7b7b1e5dce60b5b5c56d9429f27acf53ec45b9",
                    "token": "0x31e95e8dc9447dfb706f0dfa2d8243c832de7d8da4edd87aa8f3f0008"
                }
            }
        }
    }

Additional resource

More about Validium on StarkWare’s site.

get_blockchain_type

API to query on which blockchain the system is based on. Starknet or Ethereum.

Returns

Type of the blockchain.

order_tree_height

API to query the height of the order tree.

Returns

Height of the order tree.

CommitteeSignature

The information describing a committee signature.

Parameters

batch_id(int) – ID of signed batch.
signature(Union[str_,_SignatureOverStarknet]) – Committee signature for the batch.
member_key(str) – Committee member address used for identification.
claim_hash(str) – Claim hash being signed used for validating the expected claim.

StateUpdateVersion2

The information describing a state update with volition. Includes both Validium and rollup updates and tree roots; Validium updates/root is still referred to as ‘vaults’/’vault_root’ for backwards compatability.

Parameters

rollup_vaults(dict) – Dictionary mapping vault_id to vault state.
rollup_vault_root(str) – expected rollup vault root after update (hex str without prefix).

StateUpdate

alias of starkware.starkware_utils.objects.starkex_state.StateUpdateVersion2

VaultState

Vault state.

Parameters

stark_key(int) – Public key of the party as registered on the StarkEx contract.
token(int) – Unique token ID as registered on the StarkEx contract.
balance(int) – Vault balance.

OrderState

A leaf of the orders tree. May represent either the fulfillment state of an order or the minted state of a mintable asset.

Parameters

fulfilled_amount(int) – If the leaf represents an order, this is the amount fulfilled; if the leaf represents a mintable asset, this is the amount minted.

SignatureOverStarknet

The information describing a signature over Starknet.

Parameters

signature(Tuple[int,int_]_) – An EC Signature.
signer_stark_key(int) – The stark key of the signer.