30 lines
882 B
Bash
Executable File
30 lines
882 B
Bash
Executable File
#!/bin/bash
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usage="Usage:
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$(basename "$0") [sequence]
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Fetch a governance VAA by sequence number, and print it as hex."
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sequence=$1
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if [ -z "$sequence" ]; then
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echo "$usage"
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exit 1
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fi
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mkdir -p "$TMPDIR/vaa"
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cached="$TMPDIR/vaa/$sequence"
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# We cache the result once it's ready, so we don't keep making requests if the
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# VAA has already been pulled
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if [ ! -f "$cached" ]; then
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result=$(curl -s "https://wormhole-v2-mainnet-api.certus.one/v1/signed_vaa/1/0000000000000000000000000000000000000000000000000000000000000004/$sequence" | jq '.vaaBytes' -r)
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# The 'vaaBytes' field is set once quorum has been reached. Otherwise, 'jq'
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# returns "null", in which case we just exit 1
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if [ "$result" == "null" ]; then
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exit 1
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fi
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# vaaBytes is base64, we convert it to hex and write it to cache
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echo "$result" | base64 -d | hexdump -v -e '/1 "%02x" ' > "$cached"
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fi
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cat "$cached"
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