wasm-ql

+----------+    +------------+    +---------------+       +-------------------+
| database |    | database   |    | wasm-ql       |       | web browser       |
| filler   |    |            |    | ------------- |       | ---------------   |
|          | => | PostgreSQL | => | Server WASM A |  <=>  | Client WASM A     |
|          |    |     or     |    | Server WASM B |  <=>  | Client WASM B     |
|          |    |   RocksDB  |    | ...           |       |                   |
|          |    |            |    | Legacy WASM   |  <=>  | js using /v1/ RPC |
+----------+    +------------+    +---------------+       +-------------------+

wasm-ql listens on an http port and answers the following:

• POST binary data to http://host:port/wasmql/v1/query
  • The binary data includes a set of queries directed to particular server WASMs
  • wasm-ql passes each query to the appropriate WASM
  • wasm-ql collects the query replies and produces a binary response containing the replies
• POST JSON query to http://host:port/v1/*
  • The legacy server WASM handles these requests
  • The WASM produces a JSON response
  • wasm-ql forwards the response to the client

Client WASMs provide these functions to js clients:

• create_query_request(): Convert a JSON request to the binary format the server WASM expects
• decode_query_response(): Convert a binary response from the server WASM to JSON
• describe_query_request(): Describes the JSON request format to clients using JSON Schema
• describe_query_response(): Describes the JSON response format to clients using JSON Schema

These legacy API functions are available to clients:

• /v1/chain/get_abi: Retrieves the ABI of an account, if any.
• /v1/chain/get_account: Retrieves account information, including code and abi but not including quotas, weights, or permissions.
• /v1/chain/get_block: Retrieves block information. Does not include producer signature or transactions.
• /v1/chain/get_code: Retrieves the WASM of an account, if any.
• /v1/chain/get_currency_balance: Retrieves currency balance in the specified token for the given account accounted for with the given token account.
• /v1/chain/get_producer_schedule: Retrieves up to 21 producers sorted by most votes.
• /v1/chain/get_table_rows: Retrieves rows from arbitrary tables created by contracts.
• /v1/history/get_transaction: Retrieves a transaction by transaction id.
• /v1/history/get_actions: Retrieves transaction actions affecting the given receipt receiver.