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Fail loudly on set-but-unparseable env config values (closes #80 )

The config env helpers silently substituted the documented default
whenever a variable was set but could not be parsed, so a typo in an
operator-supplied value produced a running daemon with configuration
nobody asked for instead of a startup failure. `PORT=eighty` quietly
listened on 8080 and `DEBUG=ture` quietly disabled debug logging.

Defaults now apply only to variables that are unset or empty. Any
variable that is set but unparseable is a hard error that names the
key and the offending value and aborts startup through fx.

- add `envPositiveInt` with `ErrNonPositiveValue`, copied verbatim
  from the definition on the unmerged #87 so that rebasing after it
  lands is a delete-one-copy operation rather than a semantic merge
- remove `envInt` entirely; `PORT` is parsed by a new `envPort`,
  which adds the TCP upper bound (`ErrInvalidPort`, 1..65535)
- change `envBool` to return an error and parse with
  `strconv.ParseBool`, so `yes`, `on`, and typos are rejected rather
  than silently treated as false; callers are `DEBUG` and
  `MAINTENANCE_MODE`
- move env loading into `loadFromEnv`, with the environment check
  extracted to `resolveEnvironment` (also as #87 defines it), keeping
  `New` within the funlen budget

`envString` parses nothing and `envDuration` was already fail-loud,
so both are unchanged. A repo-wide audit of `os.Getenv`/`os.LookupEnv`
found no parse sites outside `internal/config`.

Tests cover each helper with a table (unset, valid, set-but-invalid)
plus `config.New`-level cases proving a bad `PORT`, `DEBUG`, or
`MAINTENANCE_MODE` aborts startup while unset variables still get
their defaults. README documents the fail-loud rule and the accepted
boolean spellings.

2026-08-09 01:45:27 +00:00

3.8 KiB

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Workflow

branch (from main)
do the work in Next Step
move Next Step to the top of Completed Steps
move the top item of Future Steps into Next Step
commit (TODO.md changes in the same commit as the work)
merge to main if the branch is not protected, otherwise open a PR
push

Status

pre-1.0. No git tags exist. main (4f5ecb1) is a working webhook proxy with auth, CSRF/SSRF protections, login rate limiting, Slack target, policy compliance (#6), pinned lint tooling (#55), a per-webhook event retention reaper (#63), and fail-loud configuration parsing (#80). Note: TODO.md was deliberately deleted from this repo in f9a9569 (2026-03-01, #6); its content was folded into the README TODO section, which this draft reconstructs as of 2026-07-06.

Next Step

Manual event redelivery from the web UI (replay is a core promised capability in the README rationale).

Completed Steps

2026-08-09 Configuration parsing fails loudly on set-but-unparseable environment values: envInt removed in favour of envPositiveInt plus a PORT range check, envBool now parses with strconv.ParseBool, and defaults apply only to unset variables (#80)
2026-08-07 Automatic event retention cleanup based on retention_days, deleting expired events, deliveries, and delivery results from each per-webhook event database (#63)
2026-08-07 Update golangci-lint to v2.12.2 (Docker image digest in Dockerfile, release-archive sha256 pins in script/bootstrap), adopt the canonical .golangci.yml (v2 linters.settings layout so lll/funlen/cyclop/dupl thresholds actually apply), and fix all newly surfaced lint findings
2026-07-07 Adopted scripts-to-rule-them-all: script/ entrypoints, Makefile shims, README Entrypoints section
2026-03-25 pin golangci-lint Docker image for linting (#55)
2026-03-18 CSRF middleware detects TLS per-request, fixing login over plain HTTP and behind reverse proxies (#54)
2026-03-17 root path redirects based on auth state (#52)
2026-03-17 CSRF protection, SSRF prevention for HTTP delivery targets with DNS rebinding defense, and per-IP login rate limiting (#42)
2026-03-17 Slack target type for incoming webhook notifications (#47)
2026-03-17 Dockerfile absolute paths and static linking (#49); absolute dev DATA_DIR default and clarified env docs (#46)
2026-03-05 security headers middleware, session regeneration on login, request body size limits (#41)
2026-03-04 tests for delivery, middleware, and session packages (#32); removed globals.Buildarch (#31)
2026-03-04 1.0 MVP merge: Webhook/Entrypoint/Target rename, core delivery engine with bounded worker pool and circuit breaker, parallel fan-out, per-webhook event databases, management UI (#16)
2026-03-01 repo brought to REPO_POLICIES standards; TODO.md folded into README (#6)

Future Steps

Delivery status and retry management UI
Per-webhook rate limiting in the receiver handler (per-webhook config plus handler enforcement; global limits must not apply to receiver endpoints)
Webhook signature verification for GitHub and Stripe HMAC formats
API key authentication for programmatic access (APIKey model exists; Bearer token middleware does not)
REST API v1
- CRUD for webhooks, entrypoints, targets
- event viewing and filtering endpoints
- event redelivery endpoint
- OpenAPI specification
Analytics dashboard: success rates, response times, volume
Session expiration tuning and a remember-me option
Password change and reset flow
Later, nice to have
- email delivery target type
- SNS and S3 delivery targets
- data transformations (e.g. webhook to Slack message formatting)
- JSONL file delivery with periodic S3 upload
- webhook event search and filtering
- multi-user with role-based access control