Shell script helper to compute the legacyCodec param for Pocket 0.6's protocol upgrade

legacycodec.sh

#!/usr/bin/env bash
#
# Requirements: have JQ somehow installed.

FULL_NODE="url_to_your_full_node"

# Best-effort solution to get the status of the gov/upgrade parameter
# and infer whether or not we should use the legacy codec in Pocket
# CLI. If some error was found during the process (timeout on the full
# node, unexpected parsing error), assume we use the legacy codec.
function get_legacy_codec_param {
    local is_upgraded=$(pocket query params --remoteCLIURL=${FULL_NODE} | tail +2 | jq '.gov_params[] | select(.param_key=="gov/upgrade") | .param_value | fromjson | .value.Height != "0"')

    if [ "${is_upgraded}" == "true" ]
    then
        echo "false"
    else
        # This is a best-effort solution, 'is_upgraded' can be null or
        # a strange value if there was some issue while getting the
        # status on the blockchain, by default, use the legacy codec.
        echo "true"
    fi
}

# pocket nodes stake ... legacyCodec=$(get_legacy_codec_param)