itering / substrate-api-rpc

When decode extrinsic, must fill metadataInstant ?
How to get the transaction fee only use RPC via http?

When decode extrinsic, must fill metadataInstant ?

How to get the transaction fee only use RPC via http?

Must fill metadataInstant, metadata info like ethereum contract Abi
You can find there

substrate-api-rpc/rpc/system.go

Line 97 in 3f2460e

func SystemPaymentQueryInfo(id int, encodedExtrinsic string) []byte {

.

Thanks, BTW, How to get the extrinsic status? success or failure?

@crossle https://github.com/itering/subscan-essentials/blob/ad1c7ccfa54c1bf34342ed007d47aad9101b5af1/internal/service/extrinsic.go#L110

	decodeEvent, err := substrate.DecodeEvent(event, metaInstant, specVersion)
	if err != nil {
		return nil, err
	}

When decode event like block 2088622, error:

Recovering from panic in DecodeEvent error is: runtime error: index out of range [5] with length 3

Sometime error Recovering from panic in DecodeEvent error is: Vec length 672001531 exceeds 1000

@crossle Your need to check using event relate metadata and custom type

How to use event metadata, i get the metadata from rpc state_getMetadata

@crossle state_getMetadata，you need use event block relate metadata
curl -X POST -H "Content-Type: application/json" --data '{"id":6,"jsonrpc":"2.0","method":"state_getMetadata","params":[blockHash]}'

@crossle state_getMetadata，you need use event block relate metadata
curl -X POST -H "Content-Type: application/json" --data '{"id":6,"jsonrpc":"2.0","method":"state_getMetadata","params":[blockHash]}'

Thanks, I lost the blockHash param...

Sometime error Recovering from panic in DecodeEvent error is: Vec length 672001531 exceeds 1000

@freehere107 spec version must match the metadata?

Sometime error Recovering from panic in DecodeEvent error is: Vec length 672001531 exceeds 1000

@freehere107 spec version must match the metadata?

@crossle Right!

@crossle Your need to check using event relate metadata and custom type

@freehere107 Can you commit the polkadot custom type to the project? like decode event, or where i can find the custom type?

@crossle you may reference https://github.com/itering/scale.go/tree/master/network

@crossle you may reference https://github.com/itering/scale.go/tree/master/network

Why not make the json to go file? others can import it

@crossle In fact, this custom JSON can only be used for testing. The custom JSON used by subscan.io is not open source.

@crossle In fact, this custom JSON can only be used for testing. The custom JSON used by subscan.io is not open source.

Any different?

@crossle https://github.com/itering/scale.go/tree/master/network Updates are not frequent

Updates are not frequent

How about make the json to *.go file?

Decode Extrinsic