LaconicNetwork/cosmjs-util
10
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases 1 Wiki Activity

Add some provable queries to IBC querier

Browse Source
This commit is contained in:
Ethan Frey 2020-08-24 22:21:56 +02:00
parent 6d6a6be2f4
commit 23bafbf5b0
2 changed files with 56 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

50
packages/stargate/src/queries/ibc.ts
View File

@ -1,3 +1,4 @@
import { toAscii } from "@cosmjs/encoding";
import Long from "long";
import { ibc } from "../codec";
@ -6,9 +7,16 @@ import { toObject } from "./utils";
export interface IbcExtension {
readonly ibc: {
readonly channel: (portId: string, channelId: string) => Promise<ibc.channel.IChannel | null>;
readonly packetCommitment: (portId: string, channelId: string, sequence: number) => Promise<Uint8Array>;
readonly packetAcknowledgement: (
portId: string,
channelId: string,
sequence: number,
) => Promise<Uint8Array>;
readonly nextSequenceReceive: (portId: string, channelId: string) => Promise<number | null>;
readonly unverified: {
// Queries for ibc.channel
readonly channel: (portId: string, channelId: string) => Promise<ibc.channel.IQueryChannelResponse>;
readonly channels: () => Promise<ibc.channel.IQueryChannelsResponse>;
readonly connectionChannels: (
@ -50,6 +58,14 @@ export interface IbcExtension {
};
}
// TODO: pull this into encoding helpers
function parseUint64BigEndian(bytes: Uint8Array): number {
const d = new DataView(bytes.buffer);
// Note: this will have rounding issues after 2**53, but we never hit these numbers
// when we do, support for bigints (eg. 1234n) will be stabilized
return 2 ** 32 * d.getUint32(0) + d.getUint32(4);
}
export function setupIbcExtension(base: QueryClient): IbcExtension {
// Use this service to get easy typed access to query methods
// This cannot be used to for proof verification
@ -74,9 +90,39 @@ export function setupIbcExtension(base: QueryClient): IbcExtension {
return {
ibc: {
channel: async (portId: string, channelId: string) => {
// keeper: https://github.com/cosmos/cosmos-sdk/blob/3bafd8255a502e5a9cee07391cf8261538245dfd/x/ibc/04-channel/keeper/keeper.go#L55-L65
// key: https://github.com/cosmos/cosmos-sdk/blob/ef0a7344af345882729598bc2958a21143930a6b/x/ibc/24-host/keys.go#L117-L120
const key = toAscii(`channelEnds/ports/${portId}/channels/${channelId}`);
const responseData = await base.queryVerified("ibc", key);
return responseData.length ? toObject(ibc.channel.Channel.decode(responseData)) : null;
},
packetCommitment: async (portId: string, channelId: string, sequence: number) => {
// keeper: https://github.com/cosmos/cosmos-sdk/blob/3bafd8255a502e5a9cee07391cf8261538245dfd/x/ibc/04-channel/keeper/keeper.go#L128-L133
// key: https://github.com/cosmos/cosmos-sdk/blob/ef0a7344af345882729598bc2958a21143930a6b/x/ibc/24-host/keys.go#L183-L185
const key = toAscii(`commitments/ports/${portId}/channels/${channelId}/packets/${sequence}`);
const responseData = await base.queryVerified("ibc", key);
// keeper code doesn't parse, but returns raw
return responseData;
},
packetAcknowledgement: async (portId: string, channelId: string, sequence: number) => {
// keeper: https://github.com/cosmos/cosmos-sdk/blob/3bafd8255a502e5a9cee07391cf8261538245dfd/x/ibc/04-channel/keeper/keeper.go#L159-L166
// key: https://github.com/cosmos/cosmos-sdk/blob/ef0a7344af345882729598bc2958a21143930a6b/x/ibc/24-host/keys.go#L153-L156
const key = toAscii(`acks/ports/${portId}/channels/${channelId}/acknowledgements/${sequence}`);
const responseData = await base.queryVerified("ibc", key);
// keeper code doesn't parse, but returns raw
return responseData;
},
nextSequenceReceive: async (portId: string, channelId: string) => {
// keeper: https://github.com/cosmos/cosmos-sdk/blob/3bafd8255a502e5a9cee07391cf8261538245dfd/x/ibc/04-channel/keeper/keeper.go#L92-L101
// key: https://github.com/cosmos/cosmos-sdk/blob/ef0a7344af345882729598bc2958a21143930a6b/x/ibc/24-host/keys.go#L133-L136
const key = toAscii(`seqAcks/ports/${portId}/channels/${channelId}/nextSequenceAck`);
const responseData = await base.queryVerified("ibc", key);
return responseData.length ? parseUint64BigEndian(responseData) : null;
},
unverified: {
// Queries for ibc.channel
channel: async (portId: string, channelId: string) => {
const response = await channelQuerySerice.channel({ portId: portId, channelId: channelId });
return toObject(response);

8
packages/stargate/types/queries/ibc.d.ts vendored
View File

@ -2,6 +2,14 @@ import { ibc } from "../codec";
import { QueryClient } from "./queryclient";
export interface IbcExtension {
readonly ibc: {
readonly channel: (portId: string, channelId: string) => Promise<ibc.channel.IChannel | null>;
readonly packetCommitment: (portId: string, channelId: string, sequence: number) => Promise<Uint8Array>;
readonly packetAcknowledgement: (
portId: string,
channelId: string,
sequence: number,
) => Promise<Uint8Array>;
readonly nextSequenceReceive: (portId: string, channelId: string) => Promise<number | null>;
readonly unverified: {
readonly channel: (portId: string, channelId: string) => Promise<ibc.channel.IQueryChannelResponse>;
readonly channels: () => Promise<ibc.channel.IQueryChannelsResponse>;