37 lines
988 B
Bash
Executable File
37 lines
988 B
Bash
Executable File
#!/usr/bin/env bash
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# wait-for-url.sh — curl with retry until success or attempts exhausted.
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#
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# Usage: wait-for-url.sh <url> [<max-attempts>] [<delay-seconds>]
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# Env (optional): BASIC_AUTH_USER, BASIC_AUTH_PASS — if set, sent as basic auth.
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set -euo pipefail
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URL="${1:-}"
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MAX_ATTEMPTS="${2:-30}"
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DELAY="${3:-2}"
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if [ -z "$URL" ]; then
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echo "usage: $0 <url> [<max-attempts>] [<delay-seconds>]" >&2
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exit 2
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fi
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# bash 3.2-safe: expand array only when non-empty.
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AUTH_ARGS=()
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if [ -n "${BASIC_AUTH_USER:-}" ] && [ -n "${BASIC_AUTH_PASS:-}" ]; then
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AUTH_ARGS=(--user "${BASIC_AUTH_USER}:${BASIC_AUTH_PASS}")
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fi
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attempt=1
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while [ "$attempt" -le "$MAX_ATTEMPTS" ]; do
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if curl -fsS ${AUTH_ARGS[@]+"${AUTH_ARGS[@]}"} -o /dev/null "$URL"; then
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echo "ok: $URL ($attempt attempt(s))"
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exit 0
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fi
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if [ "$attempt" -lt "$MAX_ATTEMPTS" ]; then
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sleep "$DELAY"
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fi
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attempt=$((attempt + 1))
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done
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echo "fail: $URL did not return 2xx after $MAX_ATTEMPTS attempts" >&2
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exit 1
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