Create statesync.bash #264
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daeMOn63
suggested changes
Aug 5, 2022
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Hey @faddat good catch thanks!
I just started working on this as well, we have some lock on fetchd preventing using statesync for now (due to wasmd not supporting it until recently), see #265
The script looks good! I guess just need to adjust URLs to point to some fetch nodes, and I'm wondering how much we want pebbledb
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| #!/bin/bash | |||
| # microtick and bitcanna contributed significantly here. | |||
| # Pebbledb state sync script for evmos | |||
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Suggested change
| # Pebbledb state sync script for evmos | |
| # Pebbledb state sync script for fetchd |
| export GOPATH=~/go | ||
| export PATH=$PATH:~/go/bin | ||
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| # Install Juno with pebbledb |
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Suggested change
| # Install Juno with pebbledb | |
| # Install fetchd with pebbledb |
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What is pebbledb? I don't think it's required to have it but curious of its advantages over default db
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| # Get "trust_hash" and "trust_height". | ||
| INTERVAL=1000 | ||
| LATEST_HEIGHT="$(curl -s https://evmos-rpc.polkachu.com/block | jq -r .result.block.header.height)" |
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| LATEST_HEIGHT="$(curl -s https://evmos-rpc.polkachu.com/block | jq -r .result.block.header.height)" | |
| LATEST_HEIGHT="$(curl -s https://rpc-fetchhub.fetch.ai/block | jq -r .result.block.header.height)" |
| INTERVAL=1000 | ||
| LATEST_HEIGHT="$(curl -s https://evmos-rpc.polkachu.com/block | jq -r .result.block.header.height)" | ||
| BLOCK_HEIGHT="$((LATEST_HEIGHT-INTERVAL))" | ||
| TRUST_HASH="$(curl -s "https://evmos-rpc.polkachu.com/block?height=$BLOCK_HEIGHT" | jq -r .result.block_id.hash)" |
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| TRUST_HASH="$(curl -s "https://evmos-rpc.polkachu.com/block?height=$BLOCK_HEIGHT" | jq -r .result.block_id.hash)" | |
| TRUST_HASH="$(curl -s "https://rpc-fetchhub.fetch.ai//block?height=$BLOCK_HEIGHT" | jq -r .result.block_id.hash)" |
| # Export state sync variables. | ||
| export FETCHD_STATESYNC_ENABLE=true | ||
| export FETCHD_P2P_MAX_NUM_OUTBOUND_PEERS=200 | ||
| export FETCHD_STATESYNC_RPC_SERVERS="https://rpc-juno-ia.notional.ventures:443,https://juno-rpc.polkachu.com:443" |
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I guess we can discover these the same way we pull seeds below?
Suggested change
| export FETCHD_STATESYNC_RPC_SERVERS="https://rpc-juno-ia.notional.ventures:443,https://juno-rpc.polkachu.com:443" | |
| export FETCHD_STATESYNC_RPC_SERVERS="$(curl -s https://raw.githubusercontent.com/cosmos/chain-registry/master/fetchhub/chain.json | jq -r '[foreach .apis.rpc[] as $item (""; "\($item.address)")] | join(",")')" |
| export FETCHD_P2P_SEEDS | ||
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| # Start chain. | ||
| fetchd start --x-crisis-skip-assert-invariants --db_backend pebbledb |
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slow but safe?
Suggested change
| fetchd start --x-crisis-skip-assert-invariants --db_backend pebbledb | |
| fetchd start --db_backend pebbledb |
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Fetch can now be fetched rapidly, and enjoys best in class endpoints.
https://github.com/cosmos/chain-registry/blob/master/fetchhub/chain.json