The explorer-backend from cosmos-gaminghub

[Feature] Smartcontract

[feature] add community pool info in explorer

To get the community pool, we can use this endpoint.

/cosmos/distribution/v1beta1/community_pool

response

{
  "pool": [
    {
      "denom": "ugame",
      "amount": "15145127389.991045560904557260"
    }
  ]
}

[bug] update sns link

[refactor] missed block count

overview

Now we check validator set in every block and check they signed or not with for loop in SaveMissedBlock function.

However tendermint has beginBlockEvent API and it has liveness event if validator missed their blocks.

So we should use this feature for counting missed blocks.

ref

Example implementation in nodejs.
https://github.com/cosmos-gaminghub/node-graphql-api/blob/master/exporter/exporter.js#L115-L143

Begin block event spec
https://github.com/cosmos/cosmos-sdk/blob/master/x/slashing/spec/06_events.md

add coinpayments API for getting price

add github actions

release workflow
build workflow

[refactor] remove syncTotalMissedBlock

overview

We don't use this column now(it is mainly for neuron testnet).
So we can remove this feature.

remove syncTotalMissedBlock
remove saveTotalMissedBlock
remove column from UI

Research IBC transaction API

IBC transaction can be sent through relayer.

https://github.com/cosmos/relayer.git

Here is example transaction related ibc module.
https://www.mintscan.io/cosmos/txs/96CD68C1A2F26FDB1880F7D00EEE16EC5352E1850FE85B9513D09411E3F73BF0

https://www.mintscan.io/cosmos/txs/65516C0A4935D70E6B80EE32ABA5275D8CB77650D43E9B969FE5EB58B6CF3B04

Research node gRPC spec

At the stargate gaia version, there is gRPC endpoint.

https://docs.cosmos.network/v0.42/core/grpc_rest.html

https://docs.cosmos.network/v0.42/run-node/interact-node.html#using-grpc

Research GraphQL golang library

[bug] err msg in explorer-backend

error msg 1

Feb 03 10:51:59 egchain-2 exporter[2247814]: {"level":"error","ts":"2022-02-03T10:51:59.166Z","caller":"client/client.go:61","msg":"Unmarshal Tx error for height 255","err":"json: cannot unmarshal array into Go struct field .txs.body.messages of type string","stacktrace":"github.com/cosmos-gaminghub/explorer-backend/client.GetTxs\n\t/root/explorer-backend/client/client.go:61\ngithub.com/cosmos-gaminghub/explorer-backend/exporter.process\n\t/root/explorer-backend/exporter/exporter.go:119\ngithub.com/cosmos-gaminghub/explorer-backend/exporter.sync\n\t/root/explorer-backend/exporter/exporter.go:101\ngithub.com/cosmos-gaminghub/explorer-backend/exporter.Start.func1\n\t/root/explorer-backend/exporter/exporter.go:35"}

error msg 2

Feb 03 10:52:00 egchain-2 exporter[2247814]: {"level":"error","ts":"2022-02-03T10:52:00.645Z","caller":"utils/bech32.go:33","msg":"decoding Bech32 address failed: must provide an valid bech32 address","bech32str":"gamevaloper1lzcxeh6dtqnht93z8wykjwt2zpsw2fh","stacktrace":"github.com/cosmos-gaminghub/explorer-backend/utils.Convert\n\t/root/explorer-backend/utils/bech32.go:33\ngithub.com/cosmos-gaminghub/explorer-backend/exporter.getListAccountAddres\n\t/root/explorer-backend/exporter/account_transaction.go:36\ngithub.com/cosmos-gaminghub/explorer-backend/exporter.SaveAccountTransaction\n\t/root/explorer-backend/exporter/account_transaction.go:17\ngithub.com/cosmos-gaminghub/explorer-backend/exporter.process\n\t/root/explorer-backend/exporter/exporter.go:164\ngithub.com/cosmos-gaminghub/explorer-backend/exporter.sync\n\t/root/explorer-backend/exporter/exporter.go:101\ngithub.com/cosmos-gaminghub/explorer-backend/exporter.Start.func1\n\t/root/explorer-backend/exporter/exporter.go:35"}

error msg 3

Feb 03 10:52:00 egchain-2 exporter[2247814]: {"level":"error","ts":"2022-02-03T10:52:00.646Z","caller":"utils/bech32.go:33","msg":"decoding Bech32 address failed: must provide an valid bech32 address","bech32str":"gamevaloper1qtw56r8sg6rts8kxjwkrpdpeqz2gc02","stacktrace":"github.com/cosmos-gaminghub/explorer-backend/utils.Convert\n\t/root/explorer-backend/utils/bech32.go:33\ngithub.com/cosmos-gaminghub/explorer-backend/exporter.getListAccountAddres\n\t/root/explorer-backend/exporter/account_transaction.go:36\ngithub.com/cosmos-gaminghub/explorer-backend/exporter.SaveAccountTransaction\n\t/root/explorer-backend/exporter/account_transaction.go:17\ngithub.com/cosmos-gaminghub/explorer-backend/exporter.process\n\t/root/explorer-backend/exporter/exporter.go:164\ngithub.com/cosmos-gaminghub/explorer-backend/exporter.sync\n\t/root/explorer-backend/exporter/exporter.go:101\ngithub.com/cosmos-gaminghub/explorer-backend/exporter.Start.func1\n\t/root/explorer-backend/exporter/exporter.go:35"}
Feb 03 10:52:00 egchain-2 exporter[2247814]: panic: runtime error: slice bounds out of range [:92] with length 55
Feb 03 10:52:00 egchain-2 exporter[2247814]: goroutine 23 [running]:
Feb 03 10:52:00 egchain-2 exporter[2247814]: github.com/cosmos-gaminghub/explorer-backend/exporter.getListAccountAddres({0xc00016e780, 0x13})
Feb 03 10:52:00 egchain-2 exporter[2247814]:         /root/explorer-backend/exporter/account_transaction.go:36 +0x27b
Feb 03 10:52:00 egchain-2 exporter[2247814]: github.com/cosmos-gaminghub/explorer-backend/exporter.SaveAccountTransaction({0xc0004bb740, 0x32, 0xc00042b230}, {0xc000022200, 0x10, 0x32})
Feb 03 10:52:00 egchain-2 exporter[2247814]:         /root/explorer-backend/exporter/account_transaction.go:17 +0x6e
Feb 03 10:52:00 egchain-2 exporter[2247814]: github.com/cosmos-gaminghub/explorer-backend/exporter.process(0x7f9180)
Feb 03 10:52:00 egchain-2 exporter[2247814]:         /root/explorer-backend/exporter/exporter.go:164 +0xd06
Feb 03 10:52:00 egchain-2 exporter[2247814]: github.com/cosmos-gaminghub/explorer-backend/exporter.sync()
Feb 03 10:52:00 egchain-2 exporter[2247814]:         /root/explorer-backend/exporter/exporter.go:101 +0x41e
Feb 03 10:52:00 egchain-2 exporter[2247814]: github.com/cosmos-gaminghub/explorer-backend/exporter.Start.func1()
Feb 03 10:52:00 egchain-2 exporter[2247814]:         /root/explorer-backend/exporter/exporter.go:35 +0xaa
Feb 03 10:52:00 egchain-2 exporter[2247814]: created by github.com/cosmos-gaminghub/explorer-backend/exporter.Start
Feb 03 10:52:00 egchain-2 exporter[2247814]:         /root/explorer-backend/exporter/exporter.go:32 +0x65
Feb 03 10:52:00 egchain-2 systemd[1]: explorer-backend.service: Main process exited, code=exited, status=2/INVALIDARGUMENT
Feb 03 10:52:00 egchain-2 systemd[1]: explorer-backend.service: Failed with result 'exit-code'.
Feb 03 10:52:10 egchain-2 systemd[1]: explorer-backend.service: Scheduled restart job, restart counter is at 4.
Feb 03 10:52:10 egchain-2 systemd[1]: Stopped exploder-backend.