GET /explorer/blocks/height response not consistent

[cedricfung]

BUG REPORT

Stack Trace or error message

GET /explorer/blocks/151739 the block fields are all empty, except transactions

Expected Behavior

GET /explorer/blocks/151738 is expected response

How to reproduce it (as minimally and precisely as possible)

Environment

• Sia version: Git master
• OS: Linux

[cedricfung]

The explorer says the block 151739 hash is 0000000000000000780e884a62fc626afe5a16b7dc7baf5d2e6062bfa4b3b010 https://explorer.siahub.info/block/151739

Then the GET /explorer/hashes/0000000000000000780e884a62fc626afe5a16b7dc7baf5d2e6062bfa4b3b010 return {"message":"unrecognized hash used as input to /explorer/hash"}

Maybe the explorer module didn't full index all the blocks?

[sanasol]

explorer module is buggy and laggy, need total rework. Or something like.

So you can only delete explorer DB and build it again until it will work correctly.

[cedricfung]

Are there any methods to get public transaction info without explorer module? How does the official Sia explorer website work?

[sanasol]

Official made by Luxor (@eddiewang) They did some fixes in explorer module: https://github.com/LuxorLabs/Sia/tree/luxor-explorer

I did my custom build too for SiaHub, but just as new endpoint in api, not via explorer fixes. https://github.com/S-anasol/Sia/tree/siahub

without explorer module

use explorer api :D https://siahub.readme.io/v1.0/reference#block

[cedricfung]

If there are fixes, why don't the team merge to the official sia repo?

[DavidVorick]

We're not confident the fixes are an overall step in the right direction. Anything we merge, we'll be stuck with for a long time, and the fixes had issues and inconsistencies of their own.

[DavidVorick]

better the devil you know than the one you don't, I guess.

Another contributor is taking a stab at making their own explorer module. I'm not sure how far they are or how committed, but they know the codebase well and have a good shot at making something that's better than everything else currently available.

fingers crossed

[cedricfung]

I have got a panic log

goroutine 1 [running]:
runtime/debug.Stack(0x446007, 0x0, 0xc42b8b0e00)
	/snap/go/1688/src/runtime/debug/stack.go:24 +0xa7
runtime/debug.PrintStack()
	/snap/go/1688/src/runtime/debug/stack.go:16 +0x22
github.com/NebulousLabs/Sia/build.Critical(0xc42b8b0ea8, 0x2, 0x2)
	/home/one/GOPATH/src/github.com/NebulousLabs/Sia/build/critical.go:16 +0x93
github.com/NebulousLabs/Sia/modules/explorer.(*Explorer).ProcessConsensusChange(0xc420097c80, 0xc914d81931bbde74, 0x612a5aa14c8e1cb8, 0x4f3ad19124dc71a3, 0xc740bc5209ecd807, 0xc44c602d80, 0x1, 0x1, 0xc47e416a80, 0x2, ...)
	/home/one/GOPATH/src/github.com/NebulousLabs/Sia/modules/explorer/update.go:282 +0xd4
github.com/NebulousLabs/Sia/modules/consensus.(*ConsensusSet).managedInitializeSubscribe.func2(0xc48529a0e0, 0xad6b38, 0xc48529a0e0)
	/home/one/GOPATH/src/github.com/NebulousLabs/Sia/modules/consensus/subscribe.go:187 +0x236
github.com/NebulousLabs/Sia/vendor/github.com/coreos/bbolt.(*DB).View(0xc420156780, 0xc443479378, 0x0, 0x0)
	/home/one/GOPATH/src/github.com/NebulousLabs/Sia/vendor/github.com/coreos/bbolt/db.go:704 +0x90
github.com/NebulousLabs/Sia/modules/consensus.(*ConsensusSet).managedInitializeSubscribe(0xc42018c780, 0xb3d420, 0xc420097c80, 0x0, 0x0, 0x0, 0x0, 0x0, 0xc420155490, 0x5d35f2)
	/home/one/GOPATH/src/github.com/NebulousLabs/Sia/modules/consensus/subscribe.go:176 +0x264
github.com/NebulousLabs/Sia/modules/consensus.(*ConsensusSet).ConsensusSetSubscribe(0xc42018c780, 0xb3d420, 0xc420097c80, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0)
	/home/one/GOPATH/src/github.com/NebulousLabs/Sia/modules/consensus/subscribe.go:216 +0xee
github.com/NebulousLabs/Sia/modules/explorer.New(0xb47e80, 0xc42018c780, 0xc420022400, 0x18, 0x18, 0x1a, 0x0)
	/home/one/GOPATH/src/github.com/NebulousLabs/Sia/modules/explorer/explorer.go:80 +0x197
main.(*Server).loadModules(0xc4200c20f0, 0xad6ec0, 0xc42008c300)
	/home/one/GOPATH/src/github.com/NebulousLabs/Sia/cmd/siad/server.go:514 +0x194d
main.startDaemon(0x0, 0x0, 0xaa9599, 0xe, 0xa998e6, 0x5, 0xa998eb, 0x5, 0x0, 0x7ffd642457a4, ...)
	/home/one/GOPATH/src/github.com/NebulousLabs/Sia/cmd/siad/daemon.go:188 +0x2b3
main.startDaemonCmd(0xc420101b80, 0xc420070780, 0x0, 0x4)
	/home/one/GOPATH/src/github.com/NebulousLabs/Sia/cmd/siad/daemon.go:236 +0x162
github.com/spf13/cobra.(*Command).execute(0xc420101b80, 0xc42001e150, 0x4, 0x4, 0xc420101b80, 0xc42001e150)
	/home/one/GOPATH/src/github.com/spf13/cobra/command.go:766 +0x2c1
github.com/spf13/cobra.(*Command).ExecuteC(0xc420101b80, 0xac72e3, 0x3b, 0xc4200bbb80)
	/home/one/GOPATH/src/github.com/spf13/cobra/command.go:852 +0x30a
github.com/spf13/cobra.(*Command).Execute(0xc420101b80, 0xefb640, 0xaae618)
	/home/one/GOPATH/src/github.com/spf13/cobra/command.go:800 +0x2b
main.main()
	/home/one/GOPATH/src/github.com/NebulousLabs/Sia/cmd/siad/main.go:174 +0x6fe
Critical error: explorer update failed: runtime error: invalid memory address or nil pointer dereference
Please submit a bug report here: https://github.com/NebulousLabs/Sia/issues