39 lines
762 B
Bash
39 lines
762 B
Bash
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#!/usr/bin/env bash
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set -euo pipefail
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RPC_HOST="${RPC_HOST:-localhost}"
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RPC_PORT="${RPC_PORT:-8545}"
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RPC_URL="${RPC_URL:-http://${RPC_HOST}:${RPC_PORT}/}"
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METHOD="$1"
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shift
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PARAMS=("$@")
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if [[ -z "${METHOD}" ]]; then
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echo "No method specified!" >&2
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exit 1
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fi
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# Parameter expansion trick to avoid var unbound error.
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if [[ -z "${PARAMS-}" ]]; then
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PARAMS_STR=''
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else
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PARAMS_STR=$(printf '%s\",\"' "${PARAMS[@]}")
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PARAMS_STR="\"${PARAMS_STR%%\",\"}\""
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fi
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PAYLOAD="{
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\"id\": 1,
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\"jsonrpc\": \"2.0\",
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\"method\": \"${METHOD}\",
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\"params\": [${PARAMS_STR}]
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}"
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OUT=$(
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curl --fail --show-error --silent \
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-H "Content-type:application/json" \
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-X POST --data "${PAYLOAD}" \
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"${RPC_URL}"
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)
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echo "${OUT}" | jq .
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