support stats using Block/BlockStat table

[hackmod]

WARNING

this is a experimental fix to serve statistics without external apis (http://drawpie.com/etc_hash_rate_api is currently broken)

Please do not merge it, execpt for testing.

• migrate public/js/stats/*.js javascripts into angular directives. (almost no change except external apis)
• fixed getMinerStats() using the Block table (instead of BlockStat table)
• support getHashrates() using the BlockStat table.
• The bomb chart is not work correctly. fixed.
  • See also ECIP-1010 Delay Difficulty Bomb Explosion ethereumproject/ECIPs#4 (comment)

---

prepare & run

• node tools/stats.js : initialize BlockStat table to show the network hashrate chart
  • you can rescan after drop the BlockStat table like as following
  • RESCAN=10000:1000000 node tools/stats.js (interval:steps)
• npm start

screenshot

[ghost]

ACK

[ghost]

Epic commit! Will update https://classic.chainkorea.kr when we merge this one 😄

[pyskell]

Excellent work!

Here's my initial comments:

1. Mining hashrate appears accurate and in line with what we see on other explorers (ex. gastracker.io)
2. Can we do labeling of miners? I'm thinking an addition to config.json that ties an address to a string (miner name).
3. Is the bomb chart needed for any Ethereum-based blockchains?
4. The hashrate chart isn't rendering for me at the moment but it looks like it may need to a minimal amount of data first in order to display. Is this correct?

[ghost]

@hackmod @pyskell Since Classic defuses the difficulty bomb on block 5900000, I think using the ECIP-1010 chart is useless for now & the future ( also the alt-chains ). Instead, we can change them to the gaslimit chart or block time chart ( if we have them on our database ).

[hackmod]

Can we do labeling of miners? I'm thinking an addition to config.json that ties an address to a string (miner name).

yes. l have already made some fix, push it later soon.

Is the bomb chart needed for any Ethereum-based blockchains?

nope. anyway it is easy to make it configurable in config.json.

The hashrate chart isn't rendering for me at the moment but it looks like it may need to a minimal amount of data first in order to display. Is this correct?

correct.
simply you could run node tools/stats.js or RESCAN=1000:1000000 node tools/stats.js to make hashrate chart work.

[hackmod]

rebased onto the master
rebased onto the dev again

[hackmod]

• support mobile layout
• show high rank miners first. hide low rank miners.

[ghost]

@hackmod show high rank miners first. hide low rank miners. - This part was pretty annoying until it solved now 😄