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Work around backend issue with minHeight in the future

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This commit is contained in:
Simon Warta 2020-08-18 10:29:53 +02:00
parent 1b8130c790
commit a3171c2f56
1 changed files with 15 additions and 6 deletions
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21
packages/stargate/src/queries/queryclient.ts
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@ -229,6 +229,7 @@ export class QueryClient {
throw new Error("Query returned height 0, cannot prove it");
}
const searchHeight = height + 1;
let nextHeader: Header;
let headersSubscription: Stream<NewBlockHeaderEvent> | undefined;
try {
@ -241,17 +242,25 @@ export class QueryClient {
// get the header for height+1
nextHeader = await firstEvent(headersSubscription); // TODO: fall back on polling if this returns a too high header
} else {
let metas = (await this.tmClient.blockchain(height + 1, height + 1)).blockMetas;
while (metas.length === 0) {
// start from current height to avoid backend error for minHeight in the future
let header = (await this.tmClient.blockchain(height, searchHeight)).blockMetas
.map((meta) => meta.header)
.find((h) => h.height === searchHeight);
while (!header) {
await sleep(1000);
metas = (await this.tmClient.blockchain(height + 1, height + 1)).blockMetas;
header = (await this.tmClient.blockchain(height, searchHeight)).blockMetas
.map((meta) => meta.header)
.find((h) => h.height === searchHeight);
}
nextHeader = metas[0].header;
nextHeader = header;
}
if (nextHeader.height !== height + 1) {
throw new Error(`Query returned height ${height}, but next header was ${nextHeader.height}`);
if (nextHeader.height !== searchHeight) {
throw new Error(
`Query requires header at height ${searchHeight} for proof verification, but next header was ${nextHeader.height}`,
);
}
return nextHeader;
}
}