safe-migrate 0.4.2

Lint PostgreSQL migrations against live database statistics to prevent blocking locks
Documentation 
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#!/bin/sh
set -eu

verbosity=0
rule_filter=

usage() {
    printf '%s\n' \
        'Usage: scripts/live-differential [-v|-vv|-vvv] [--rule RULE_DIR]' \
        '' \
        '  -v     Show harness, rule, and fixture lifecycle.' \
        '  -vv    Also show scopes, search paths, and state counts.' \
        '  -vvv   Also dump complete normalized live and simulator states.' \
        '  --rule Run one enabled manifest rule in isolation.' \
        '' \
        'DATABASE_URL must identify the PostgreSQL database to validate.'
}

while [ "$#" -gt 0 ]; do
    case "$1" in
        -v)
            verbosity=1
            ;;
        -vv)
            verbosity=2
            ;;
        -vvv)
            verbosity=3
            ;;
        --rule)
            if [ "$#" -lt 2 ]; then
                usage >&2
                exit 2
            fi
            rule_filter=$2
            shift
            ;;
        -h|--help)
            usage
            exit 0
            ;;
        *)
            usage >&2
            exit 2
            ;;
    esac
    shift
done

export SAFE_MIGRATE_DIFF_VERBOSITY="$verbosity"
if [ -n "$rule_filter" ]; then
    export SAFE_MIGRATE_DIFF_RULE="$rule_filter"
fi
exec cargo test --test live_differential_harness -- --ignored --nocapture