wehub-resource-sync
f99010fae1
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101 lines
2.7 KiB
Bash
101 lines
2.7 KiB
Bash
#!/bin/bash
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set -euo pipefail
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SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
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TMP_DIR="$(mktemp -d)"
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trap 'rm -rf "$TMP_DIR"' EXIT
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export ATTEMPT_FILE="$TMP_DIR/attempts"
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export ARGUMENT_FILE="$TMP_DIR/arguments"
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export SLEEP_FILE="$TMP_DIR/sleeps"
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cat > "$TMP_DIR/eventually_succeeds" <<'EOF'
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#!/bin/bash
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attempt=0
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if [ -f "$ATTEMPT_FILE" ]; then
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attempt="$(cat "$ATTEMPT_FILE")"
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fi
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attempt=$((attempt + 1))
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printf '%s\n' "$attempt" > "$ATTEMPT_FILE"
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printf '%s\n' "$#" >> "$ARGUMENT_FILE"
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printf '<%s>\n' "$@" >> "$ARGUMENT_FILE"
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[ "$attempt" -ge 3 ]
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EOF
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cat > "$TMP_DIR/always_fails" <<'EOF'
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#!/bin/bash
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attempt=0
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if [ -f "$ATTEMPT_FILE" ]; then
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attempt="$(cat "$ATTEMPT_FILE")"
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fi
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printf '%s\n' "$((attempt + 1))" > "$ATTEMPT_FILE"
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exit 17
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EOF
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cat > "$TMP_DIR/sleep" <<'EOF'
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#!/bin/bash
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printf '%s\n' "$@" >> "$SLEEP_FILE"
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EOF
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cat > "$TMP_DIR/invalid_command" <<'EOF'
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#!/bin/bash
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touch "$INVALID_COMMAND_FILE"
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EOF
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chmod +x "$TMP_DIR/eventually_succeeds" "$TMP_DIR/always_fails" \
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"$TMP_DIR/invalid_command" "$TMP_DIR/sleep"
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export INVALID_COMMAND_FILE="$TMP_DIR/invalid-command-ran"
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EXPECTED_USAGE="usage: retry.sh <max-attempts> <base-delay-seconds> <command> [args...]"
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assert_invalid() {
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local description="$1"
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shift
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local output status
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rm -f "$INVALID_COMMAND_FILE"
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set +e
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output="$(bash "$SCRIPT_DIR/retry.sh" "$@" 2>&1)"
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status=$?
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set -e
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if [ "$status" -ne 2 ]; then
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printf 'FAIL: %s returned %s instead of 2\n' "$description" "$status" >&2
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return 1
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fi
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if [ "$output" != "$EXPECTED_USAGE" ]; then
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printf 'FAIL: %s emitted unexpected error: %s\n' "$description" "$output" >&2
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return 1
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fi
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if [ -e "$INVALID_COMMAND_FILE" ]; then
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printf 'FAIL: %s ran the wrapped command\n' "$description" >&2
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return 1
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fi
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}
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assert_invalid "nonnumeric max attempts" nope 0 "$TMP_DIR/invalid_command"
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assert_invalid "zero max attempts" 0 0 "$TMP_DIR/invalid_command"
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assert_invalid "negative max attempts" -1 0 "$TMP_DIR/invalid_command"
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assert_invalid "nonnumeric base delay" 3 nope "$TMP_DIR/invalid_command"
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assert_invalid "negative base delay" 3 -1 "$TMP_DIR/invalid_command"
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assert_invalid "missing command" 3 0
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PATH="$TMP_DIR:$PATH" bash "$SCRIPT_DIR/retry.sh" \
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3 10 "$TMP_DIR/eventually_succeeds" "argument with spaces"
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[ "$(cat "$ATTEMPT_FILE")" = "3" ]
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[ "$(cat "$ARGUMENT_FILE")" = $'1\n<argument with spaces>\n1\n<argument with spaces>\n1\n<argument with spaces>' ]
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[ "$(cat "$SLEEP_FILE")" = $'10\n20' ]
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rm -f "$ATTEMPT_FILE" "$SLEEP_FILE"
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set +e
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PATH="$TMP_DIR:$PATH" bash "$SCRIPT_DIR/retry.sh" \
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3 0 "$TMP_DIR/always_fails"
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status=$?
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set -e
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[ "$status" -eq 17 ]
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[ "$(cat "$ATTEMPT_FILE")" = "3" ]
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echo "retry tests passed"
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