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polkadot-js / api

Promise and RxJS APIs around Polkadot and Substrate based chains via RPC calls. It is dynamically generated based on what the Substrate runtime provides in terms of metadata.
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Error: findMetaCall: Unable to find Call with index [0, 0]/[0,0] #4793

Closed CertainLach closed 2 years ago

CertainLach commented 2 years ago

Running

polkadot-types-from-chain --endpoint metadata.json --output src/ --package .

Using polkadot.js v8.3.1 (fails with same error on older versions)

With this metadata (Also can be obtained from https://quartz.unique.network): https://gist.githubusercontent.com/CertainLach/a1fef8a3d48a6ba899d205a7420be5b2/raw/5e55bd6a7f75a3e3d10d73d049b55ff84c008db7/metadata.json

Fails with this error:

Error: findMetaCall: Unable to find Call with index [0, 0]/[0,0]
    at assert (node_modules/@polkadot/util/cjs/assert.js:37:11)
    at assertReturn (node_modules/@polkadot/util/cjs/assert.js:47:3)
    at TypeRegistry.findMetaCall (node_modules/@polkadot/types/cjs/create/registry.js:329:35)
    at decodeCallViaU8a (node_modules/@polkadot/types/cjs/generic/Call.js:62:34)
    at decodeCall (node_modules/@polkadot/types/cjs/generic/Call.js:90:12)
    at new GenericCall (node_modules/@polkadot/types/cjs/generic/Call.js:121:21)
    at new Type (node_modules/@polkadot/types/cjs/create/registry.js:368:16)
    at getSimilarTypes (node_modules/@polkadot/typegen/cjs/util/derived.js:102:15)
    at node_modules/@polkadot/typegen/cjs/generate/tx.js:94:59
    at Array.map (<anonymous>)
jacogr commented 2 years ago

This is something that needs investigation as to "why". (However did spot an issue with the types-from-defs, where BTreeSet is incorrectly handled, this addresses that issue - https://github.com/polkadot-js/api/pull/4794)

jacogr commented 2 years ago

This happens in the cases where an index 0/0 is not available (this is generally the system pallet in Substrate chains) - since indexes can be specified at any value, relying on the default is probably not great... as seen here.

polkadot-js-bot commented 2 years ago

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