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Rpc: add getMultipleAccounts endpoint (#12005)

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* Add rpc endpoint to return the state of multiple accounts from the same bank

* Add docs

* Review comments: Dedupe account code, default to base64, add max const

* Add get_multiple_accounts to rpc-client
This commit is contained in:
Tyera Eulberg
2020-09-03 11:35:06 -06:00
committed by GitHub
parent b940da4040
commit b22de369b7
4 changed files with 282 additions and 27 deletions
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44
docs/src/apps/jsonrpc-api.md
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@ -39,6 +39,7 @@ To interact with a Solana node inside a JavaScript application, use the [solana-
- [getLargestAccounts](jsonrpc-api.md#getlargestaccounts)
- [getLeaderSchedule](jsonrpc-api.md#getleaderschedule)
- [getMinimumBalanceForRentExemption](jsonrpc-api.md#getminimumbalanceforrentexemption)
- [getMultipleAccounts](jsonrpc-api.md#getmultipleaccounts)
- [getProgramAccounts](jsonrpc-api.md#getprogramaccounts)
- [getRecentBlockhash](jsonrpc-api.md#getrecentblockhash)
- [getSignatureStatuses](jsonrpc-api.md#getsignaturestatuses)
@ -836,6 +837,49 @@ curl -X POST -H "Content-Type: application/json" -d '{"jsonrpc":"2.0", "id":1, "
{"jsonrpc":"2.0","result":500,"id":1}
```
### getMultipleAccounts
Returns the account information for a list of Pubkeys
#### Parameters:
- `<array>` - An array of Pubkeys to query, as base-58 encoded strings
- `<object>` - (optional) Configuration object containing the following optional fields:
- (optional) [Commitment](jsonrpc-api.md#configuring-state-commitment)
- `encoding: <string>` - encoding for Account data, either "base58" (*slow*), "base64", or jsonParsed". "base58" is limited to Account data of less than 128 bytes. "base64" will return base64 encoded data for Account data of any size.
Parsed-JSON encoding attempts to use program-specific state parsers to return more human-readable and explicit account state data. If parsed-JSON is requested but a parser cannot be found, the field falls back to base64 encoding, detectable when the `data` field is type `<string>`. **jsonParsed encoding is UNSTABLE**
- (optional) `dataSlice: <object>` - limit the returned account data using the provided `offset: <usize>` and `length: <usize>` fields; only available for "base58" or "base64" encoding.
#### Results:
The result will be an RpcResponse JSON object with `value` equal to:
An array of:
- `<null>` - if the account at that Pubkey doesn't exist
- `<object>` - otherwise, a JSON object containing:
- `lamports: <u64>`, number of lamports assigned to this account, as a u64
- `owner: <string>`, base-58 encoded Pubkey of the program this account has been assigned to
- `data: <[string, encoding]|object>`, data associated with the account, either as encoded binary data or JSON format `{<program>: <state>}`, depending on encoding parameter
- `executable: <bool>`, boolean indicating if the account contains a program \(and is strictly read-only\)
- `rentEpoch: <u64>`, the epoch at which this account will next owe rent, as u64
#### Example:
```bash
// Request
curl -X POST -H "Content-Type: application/json" -d '{"jsonrpc":"2.0", "id":1, "method":"getMultipleAccounts", "params":[["vines1vzrYbzLMRdu58ou5XTby4qAqVRLmqo36NKPTg", "4fYNw3dojWmQ4dXtSGE9epjRGy9pFSx62YypT7avPYvA"],{"dataSlice":{"offset":0,"length":0}}]}' http://localhost:8899
// Result
{"jsonrpc":"2.0","result":{"context":{"slot":1},"value":[{"data":["AAAAAAEAAAACtzNsyJrW0g==","base64"],"executable":false,"lamports":1000000000,"owner":"11111111111111111111111111111111","rentEpoch":2}},{"data":["","base64"],"executable":false,"lamports":5000000000,"owner":"11111111111111111111111111111111","rentEpoch":2}}],"id":1}
// Request
curl -X POST -H "Content-Type: application/json" -d '{"jsonrpc":"2.0", "id":1, "method":"getMultipleAccounts", "params":[["vines1vzrYbzLMRdu58ou5XTby4qAqVRLmqo36NKPTg", "4fYNw3dojWmQ4dXtSGE9epjRGy9pFSx62YypT7avPYvA"],{"encoding": "base58"}]}' http://localhost:8899
// Result
{"jsonrpc":"2.0","result":{"context":{"slot":1},"value":[{"data":["11116bv5nS2h3y12kD1yUKeMZvGcKLSjQgX6BeV7u1FrjeJcKfsHRTPuR3oZ1EioKtYGiYxpxMG5vpbZLsbcBYBEmZZcMKaSoGx9JZeAuWf","base58"],"executable":false,"lamports":1000000000,"owner":"11111111111111111111111111111111","rentEpoch":2}},{"data":["","base58"],"executable":false,"lamports":5000000000,"owner":"11111111111111111111111111111111","rentEpoch":2}}],"id":1}
```
### getProgramAccounts
Returns all accounts owned by the provided program Pubkey