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| author | James O'Beirne <james.obeirne@gmail.com> | 2019-04-25 15:32:09 -0400 |
|---|---|---|
| committer | James O'Beirne <james.obeirne@gmail.com> | 2019-11-05 13:36:04 -0500 |
| commit | c1ccbc3ddef931896a7e9dcfa6704e305a69fbff (patch) | |
| tree | 4db20e0e966f21b3240856489a742ec4f344206a /contrib/devtools | |
| parent | 57cf74c9918d10c69a46e6ceb3cb1a5e04edf5bc (diff) | |
devtools: add utxo_snapshot.sh
to allow easy (if not time-consuming) generation and verification of
snapshots.
Diffstat (limited to 'contrib/devtools')
| -rwxr-xr-x | contrib/devtools/utxo_snapshot.sh | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/contrib/devtools/utxo_snapshot.sh b/contrib/devtools/utxo_snapshot.sh new file mode 100755 index 0000000000..dee25ff67b --- /dev/null +++ b/contrib/devtools/utxo_snapshot.sh @@ -0,0 +1,44 @@ +#!/usr/bin/env bash +# +# Copyright (c) 2019 The Bitcoin Core developers +# Distributed under the MIT software license, see the accompanying +# file COPYING or http://www.opensource.org/licenses/mit-license.php. +# +export LC_ALL=C + +set -ueo pipefail + +if (( $# < 3 )); then + echo 'Usage: utxo_snapshot.sh <generate-at-height> <snapshot-out-path> <bitcoin-cli-call ...>' + echo + echo " if <snapshot-out-path> is '-', don't produce a snapshot file but instead print the " + echo " expected assumeutxo hash" + echo + echo 'Examples:' + echo + echo " ./contrib/devtools/utxo_snapshot.sh 570000 utxo.dat ./src/bitcoin-cli -datadir=\$(pwd)/testdata" + echo ' ./contrib/devtools/utxo_snapshot.sh 570000 - ./src/bitcoin-cli' + exit 1 +fi + +GENERATE_AT_HEIGHT="${1}"; shift; +OUTPUT_PATH="${1}"; shift; +# Most of the calls we make take a while to run, so pad with a lengthy timeout. +BITCOIN_CLI_CALL="${*} -rpcclienttimeout=9999999" + +# Block we'll invalidate/reconsider to rewind/fast-forward the chain. +PIVOT_BLOCKHASH=$($BITCOIN_CLI_CALL getblockhash $(( GENERATE_AT_HEIGHT + 1 )) ) + +(>&2 echo "Rewinding chain back to height ${GENERATE_AT_HEIGHT} (by invalidating ${PIVOT_BLOCKHASH}); this may take a while") +${BITCOIN_CLI_CALL} invalidateblock "${PIVOT_BLOCKHASH}" + +if [[ "${OUTPUT_PATH}" = "-" ]]; then + (>&2 echo "Generating txoutset info...") + ${BITCOIN_CLI_CALL} gettxoutsetinfo | grep hash_serialized_2 | sed 's/^.*: "\(.\+\)\+",/\1/g' +else + (>&2 echo "Generating UTXO snapshot...") + ${BITCOIN_CLI_CALL} dumptxoutset "${OUTPUT_PATH}" +fi + +(>&2 echo "Restoring chain to original height; this may take a while") +${BITCOIN_CLI_CALL} reconsiderblock "${PIVOT_BLOCKHASH}" |