Add support for SLX, a fork of PIVX

[olegmitrakhovich]

Hello,

Would it be hard to make blockbook work with SLX cryptocurrency? https://github.com/slatecurrency/slate

SLX is a fork of PIVX. It looks like PIVX already works with blockbook, so maybe there is no need to even code anything just setup blockbook as PIVX but run a slated instance instead.

[martinboehm]

Sure, go ahead and create a pull request.

[olegmitrakhovich]

thank you for the response, is there a pull request number for PIVX? just want to have something follow along. @martinboehm

[martinboehm]

PIVX pull request is in this repo, I am quite sure that you can do the github search for it yourselves :)

[olegmitrakhovich]

thank you for the response, I found the two commits later :)

random-zebra/PIVX-BlockExplorer@818288c

random-zebra/PIVX-BlockExplorer@24bedfe

[olegmitrakhovich]

I made this fork https://github.com/SlateEntertainmentGroup/SLX-blockbook. I don't fully understand how the parser_test.go works. I am getting this error:

--- FAIL: TestParseBlock (0.00s)
slateparser_test.go:449: ParseBlock() block size: got 463, want 492
slateparser_test.go:453: ParseBlock() block time: got 1504351235, want 1578427428
slateparser_test.go:457: ParseBlock() number of transactions: got 0, want 2

where is the "463" and "1504351235" are coming from?

Any help is appreciated. please and thank you :) @martinboehm

[martinboehm]

The data to parse are loaded by helperLoadBlock from the folder testdata.

[olegmitrakhovich]

thank you for the response that got me a lot further.

I am now fully synced and attempting to install blockbook with "sudo apt install ./blockbook-slate_0.3.1_amd64.deb". I am getting this error:

"The following packages have unmet dependencies:
blockbook-slate : Depends: libgflags2v5 but it is not installable
E: Unable to correct problems, you have held broken packages."

I did some research and found this issue:

#45

I did go into this dockerfile and replaced "debian: 9" with "debian: 10" (I am running "Debian GNU/Linux 10 (buster)". here is the commit:

SlateEntertainmentGroup@3847838

I am still getting the same error (depends: libgflags2v5)

Not sure if I have to rebuild and resync again or something else is going on? @martinboehm

[olegmitrakhovich]

rebuilding did work, blockbook installed successfully :)

"internalState: database is in inconsistent state and cannot be used" is my next error but I think its due to low memory, I checked other issues looks like increasing memory will help. I am assuming this because blockbook stopped syncing around blocks which have over 3k transactions in them and bulk import probably failed due to low memory.

[olegmitrakhovich]

adding more memory did work! the explorer works great so far on main net....but how do I switch over between nets? I want it to sync with testnet.

[martinboehm]

Install 2nd instance of Blockbook for the testnet.

[olegmitrakhovich]

not sure how to do that, do I just "make all-slate --testnet" ? I added all the code already to make blockbook support slate on testnet. @martinboehm

[martinboehm]

make all-slate_testnet

[olegmitrakhovich]

perfect. thank you for the quick response. @martinboehm

[olegmitrakhovich]

what about "systemctl start backend-slate.service" how is that command different when starting blockbook on testnet? at this point "systemctl start backend-slate.service" just starts to sync with main net. @martinboehm

[martinboehm]

make all-slate_testnet will create two debian packages, one for backend, one for blockbook. They are called something like backend-slate-testnet_version.deb and blockbook-slate-testnet_0.3.1_amd64.deb. You install and run the backend first, let is synchronize and then install the blockbook package. If your config in slate_testnet.json is correct, everything will work fine.

[olegmitrakhovich]

thank you for the help. In my slate_testnet.json file I had "protect_memory": false ... and it should have been "protect_memory": true .... testnet explorer is working great now. I will clean up some of my commits and make a pull request soon.

[martinboehm]

Closing. Make a PR when you are ready.