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Automatically configure and use Chain Registry CHAIN_JSON #913

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Automatically configure and use Chain Registry CHAIN_JSON #913

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dc9958a
Automatically configure and use Chain Registry CHAIN_JSON
tombeynon Nov 17, 2024
17969c1
Add 0.5 second sleep to avoid any CHAIN_JSON rate limiting
tombeynon Nov 18, 2024
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2 changes: 1 addition & 1 deletion README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -163,7 +163,7 @@ The omnibus images allow some specific variables and shortcuts to configure extr

### Chain configuration

Chain config can be sourced from a `chain.json` file [as seen in the Cosmos Chain Registry](https://github.com/cosmos/chain-registry).
Chain config can be sourced from a `chain.json` file [as seen in the Cosmos Chain Registry](https://github.com/cosmos/chain-registry). The [Chain Registry](https://github.com/cosmos/chain-registry) will be used automatically for all pre-built images, or whenever the `PROJECT` environment variable matches a [Chain Registry](https://github.com/cosmos/chain-registry) ID. Set `CHAIN_JSON` to an alternative URL if required, or `0` to disable this behaviour entirely.

|Variable|Description|Default|Examples|
|---|---|---|---|
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15 changes: 14 additions & 1 deletion run.sh
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Expand Up @@ -5,7 +5,20 @@ set -e
[ "$DEBUG" == "2" ] && set -x

export CHAIN_JSON="${CHAIN_JSON:-$CHAIN_URL}" # deprecate CHAIN_URL
if [ -n "$CHAIN_JSON" ]; then
if [[ -z "$CHAIN_JSON" && -n "$PROJECT" ]]; then
CHAIN_JSON="https://raw.githubusercontent.com/cosmos/chain-registry/master/${PROJECT}/chain.json"
fi

CHAIN_JSON_EXISTS=false
if [[ -n "$CHAIN_JSON" && "$CHAIN_JSON" != "0" ]]; then
if curl --output /dev/null --silent --head --fail "$CHAIN_JSON"; then
CHAIN_JSON_EXISTS=true
else
echo "Chain JSON not found"
fi
fi
if [[ $CHAIN_JSON_EXISTS == true ]]; then
sleep 0.5 # avoid rate limiting
CHAIN_METADATA=$(curl -Ls $CHAIN_JSON)
export CHAIN_ID="${CHAIN_ID:-$(echo $CHAIN_METADATA | jq -r .chain_id)}"
export P2P_SEEDS="${P2P_SEEDS:-$(echo $CHAIN_METADATA | jq -r '.peers.seeds | map(.id+"@"+.address) | join(",")')}"
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