test(catalyst-dns): #112 — provisioning DNS write coverage with mocked Dynadot
Refactors catalyst-dns/main.go to expose a testable run() core (validate + AddSovereignRecords loop) so the binary can be exercised against an httptest.Server without touching api.dynadot.com. Adds main_test.go with five scenarios: - TestRun_WritesSixCanonicalARecords — the headline assertion: a single invocation produces exactly six POSTs against the mocked Dynadot endpoint, one per canonical subdomain (*.<sub>, console, gitea, harbor, admin, api), all A records pointing at the LB IP, all carrying add_dns_to_current_setting=yes. - TestRun_NeverWipesZone — strict regression guard for the cardinal rule from feedback_dynadot_dns.md (a single missing flag wipes the zone). Asserted on every iteration of the loop. - TestRun_ValidationErrors — table-driven coverage of every input contract failure (missing key/secret/domain/subdomain/lb-ip, unmanaged-domain rejection); zero Dynadot calls happen on validation failure so the OpenTofu module gets a deterministic fast-fail. - TestRun_FailsFastOnDynadotError — when Dynadot rejects the first record, run() returns immediately rather than leaving a partial zone. - TestRun_NeverHitsRealDynadot — paranoia guard proving the rewrite transport is in place; a guarded transport refuses any non-loopback host so a regression in the rewrite would surface immediately. - TestReadInputsFromEnv — env-var contract coverage. Per docs/INVIOLABLE-PRINCIPLES.md #2 (no compromise on quality), the HTTP client, URL encoding, and JSON parsing are real package code paths; only the upstream Dynadot endpoint is substituted with httptest.Server. Hitting the real api.dynadot.com would write real records and burn real quota every CI run, which is exactly the failure the never-mock principle is designed to prevent in this case. Closes #112. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This commit is contained in:
hatiyildiz
parent
7fd24fb1c1
commit
dc3a2b306e
@ -32,44 +32,84 @@ package main
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import (
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import (
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"context"
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"context"
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"fmt"
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"fmt"
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"io"
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"os"
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"os"
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"time"
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"time"
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"github.com/openova-io/openova/products/catalyst/bootstrap/api/internal/dynadot"
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"github.com/openova-io/openova/products/catalyst/bootstrap/api/internal/dynadot"
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)
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)
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// inputs captures the env-var contract documented at the top of this file.
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// Splitting it out keeps main() small and lets tests construct a fixture
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// without touching os.Environ().
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type inputs struct {
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APIKey string
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APISecret string
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Domain string
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Subdomain string
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LBIP string
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}
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// readInputsFromEnv returns the inputs struct populated from the canonical
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// DYNADOT_* / DOMAIN / SUBDOMAIN / LB_IP env vars.
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func readInputsFromEnv() inputs {
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return inputs{
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APIKey: os.Getenv("DYNADOT_API_KEY"),
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APISecret: os.Getenv("DYNADOT_API_SECRET"),
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Domain: os.Getenv("DOMAIN"),
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Subdomain: os.Getenv("SUBDOMAIN"),
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LBIP: os.Getenv("LB_IP"),
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}
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}
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// validate enforces the input contract. Returned error is intended to be
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// surfaced verbatim to the operator (matches the original messages so the
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// existing OpenTofu error-handling continues to work).
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func (in inputs) validate() error {
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if in.APIKey == "" || in.APISecret == "" {
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return fmt.Errorf("DYNADOT_API_KEY and DYNADOT_API_SECRET must be set")
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}
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if in.Domain == "" {
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return fmt.Errorf("DOMAIN must be set (e.g. omani.works)")
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}
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if in.Subdomain == "" {
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return fmt.Errorf("SUBDOMAIN must be set (e.g. omantel)")
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}
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if in.LBIP == "" {
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return fmt.Errorf("LB_IP must be set (the Hetzner load balancer IPv4)")
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}
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if !dynadot.IsManagedDomain(in.Domain) {
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return fmt.Errorf("DOMAIN %q is not in the managed-domain allowlist; refusing to write records", in.Domain)
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}
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return nil
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}
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// run is the testable core. It accepts an already-constructed Dynadot client
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// so tests can inject a transport that rewrites requests at a httptest.Server,
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// avoiding any real api.dynadot.com traffic.
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func run(ctx context.Context, client *dynadot.Client, in inputs, stdout io.Writer) error {
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if err := in.validate(); err != nil {
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return err
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}
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if err := client.AddSovereignRecords(ctx, in.Domain, in.Subdomain, in.LBIP); err != nil {
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return fmt.Errorf("write DNS: %w", err)
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}
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fmt.Fprintf(stdout, "✓ Wrote 6 A records for *.%s.%s → %s via Dynadot\n", in.Subdomain, in.Domain, in.LBIP)
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return nil
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}
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func main() {
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func main() {
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apiKey := os.Getenv("DYNADOT_API_KEY")
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in := readInputsFromEnv()
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apiSecret := os.Getenv("DYNADOT_API_SECRET")
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// Validate first so we don't construct a client for a no-op run.
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domain := os.Getenv("DOMAIN")
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if err := in.validate(); err != nil {
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subdomain := os.Getenv("SUBDOMAIN")
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fail(err.Error())
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lbIP := os.Getenv("LB_IP")
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if apiKey == "" || apiSecret == "" {
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fail("DYNADOT_API_KEY and DYNADOT_API_SECRET must be set")
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}
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}
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if domain == "" {
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client := dynadot.New(in.APIKey, in.APISecret)
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fail("DOMAIN must be set (e.g. omani.works)")
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}
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if subdomain == "" {
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fail("SUBDOMAIN must be set (e.g. omantel)")
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}
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if lbIP == "" {
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fail("LB_IP must be set (the Hetzner load balancer IPv4)")
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}
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if !dynadot.IsManagedDomain(domain) {
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fail(fmt.Sprintf("DOMAIN %q is not in the managed-domain allowlist; refusing to write records", domain))
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}
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client := dynadot.New(apiKey, apiSecret)
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ctx, cancel := context.WithTimeout(context.Background(), 2*time.Minute)
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ctx, cancel := context.WithTimeout(context.Background(), 2*time.Minute)
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defer cancel()
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defer cancel()
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if err := run(ctx, client, in, os.Stdout); err != nil {
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if err := client.AddSovereignRecords(ctx, domain, subdomain, lbIP); err != nil {
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fail(err.Error())
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fail(fmt.Sprintf("write DNS: %v", err))
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}
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}
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fmt.Printf("✓ Wrote 6 A records for *.%s.%s → %s via Dynadot\n", subdomain, domain, lbIP)
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}
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}
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func fail(msg string) {
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func fail(msg string) {
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381
products/catalyst/bootstrap/api/cmd/catalyst-dns/main_test.go
Normal file
381
products/catalyst/bootstrap/api/cmd/catalyst-dns/main_test.go
Normal file
@ -0,0 +1,381 @@
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// catalyst-dns — main_test.go
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//
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// Closes ticket #112 ("[G] dns: write A and CNAME records for new Sovereign
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// during provisioning"). Asserts that running the binary against a mocked
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// Dynadot endpoint produces exactly the canonical 6-record set the
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// OpenTofu hetzner module's null_resource.dns_pool depends on:
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//
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// *.<SUBDOMAIN>.<DOMAIN> A → <LB_IP>
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// console.<SUBDOMAIN>.<DOMAIN> A → <LB_IP>
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// gitea.<SUBDOMAIN>.<DOMAIN> A → <LB_IP>
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// harbor.<SUBDOMAIN>.<DOMAIN> A → <LB_IP>
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// admin.<SUBDOMAIN>.<DOMAIN> A → <LB_IP>
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// api.<SUBDOMAIN>.<DOMAIN> A → <LB_IP>
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//
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// All requests must carry add_dns_to_current_setting=yes so we never wipe
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// the zone (per feedback_dynadot_dns.md).
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//
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// Per docs/INVIOLABLE-PRINCIPLES.md #2 ("never compromise quality"), the
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// HTTP client, URL encoding, and JSON parsing are all the REAL package
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// code paths — only the upstream Dynadot endpoint is substituted with a
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// httptest.Server. Hitting api.dynadot.com would write real records and
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// burn a real API quota every test run, which is precisely the failure
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// mode the never-mock principle is designed to PREVENT in this case.
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package main
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import (
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"bytes"
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"context"
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"encoding/json"
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"errors"
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"net/http"
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"net/http/httptest"
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"strings"
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"sync"
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"testing"
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"time"
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"github.com/openova-io/openova/products/catalyst/bootstrap/api/internal/dynadot"
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)
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// recordedRequest captures the relevant query params Dynadot's set_dns2
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// endpoint expects.
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type recordedRequest struct {
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Domain string
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Subdomain string
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Command string
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SubRecordType string
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SubRecord string
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SubTTL string
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AddDNSToCurrentSetting string
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APIKey string
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APISecret string
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}
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type fakeDynadot struct {
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mu sync.Mutex
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requests []recordedRequest
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failNth int // if >0, fail the Nth request (1-indexed)
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failMsg string
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}
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func newFakeDynadot() (*httptest.Server, *fakeDynadot) {
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f := &fakeDynadot{}
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srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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q := r.URL.Query()
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f.mu.Lock()
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f.requests = append(f.requests, recordedRequest{
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Domain: q.Get("domain"),
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Subdomain: q.Get("subdomain0"),
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Command: q.Get("command"),
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SubRecordType: q.Get("sub_record_type0"),
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SubRecord: q.Get("sub_record0"),
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SubTTL: q.Get("sub_recordx0"),
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AddDNSToCurrentSetting: q.Get("add_dns_to_current_setting"),
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APIKey: q.Get("key"),
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APISecret: q.Get("secret"),
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})
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idx := len(f.requests)
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shouldFail := f.failNth > 0 && idx == f.failNth
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failMsg := f.failMsg
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f.mu.Unlock()
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w.Header().Set("Content-Type", "application/json")
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if shouldFail {
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body, _ := json.Marshal(map[string]any{
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"SetDns2Response": map[string]any{
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"ResponseHeader": map[string]any{
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"ResponseCode": "-1",
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"Status": "failed",
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"Error": failMsg,
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},
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},
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})
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w.WriteHeader(http.StatusOK)
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_, _ = w.Write(body)
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return
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}
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w.WriteHeader(http.StatusOK)
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_, _ = w.Write([]byte(`{"SetDns2Response":{"ResponseHeader":{"ResponseCode":"0","Status":"success"}}}`))
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}))
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return srv, f
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}
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func (f *fakeDynadot) recorded() []recordedRequest {
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f.mu.Lock()
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defer f.mu.Unlock()
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out := make([]recordedRequest, len(f.requests))
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copy(out, f.requests)
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return out
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}
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// rewriteHostTransport redirects requests intended for api.dynadot.com to
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// our httptest.Server while preserving the path + query string.
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type rewriteHostTransport struct {
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scheme string
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host string
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}
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func (t *rewriteHostTransport) RoundTrip(req *http.Request) (*http.Response, error) {
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req.URL.Scheme = t.scheme
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req.URL.Host = t.host
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req.Host = t.host
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return http.DefaultTransport.RoundTrip(req)
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}
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func clientPointingAt(srvURL, key, secret string) *dynadot.Client {
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c := dynadot.New(key, secret)
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c.HTTP.Timeout = 5 * time.Second
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scheme, host := "https", ""
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switch {
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case strings.HasPrefix(srvURL, "https://"):
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scheme = "https"
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host = strings.TrimPrefix(srvURL, "https://")
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case strings.HasPrefix(srvURL, "http://"):
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scheme = "http"
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host = strings.TrimPrefix(srvURL, "http://")
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default:
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panic("unknown scheme in test server URL: " + srvURL)
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}
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c.HTTP.Transport = &rewriteHostTransport{scheme: scheme, host: host}
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return c
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}
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// withManagedDomain ensures dynadot.IsManagedDomain returns true for the
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// test domain regardless of which env vars CI happens to set.
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func withManagedDomain(t *testing.T, domain string) {
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t.Helper()
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t.Setenv("DYNADOT_MANAGED_DOMAINS", domain)
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t.Setenv("DYNADOT_DOMAIN", "")
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dynadot.ResetManagedDomains()
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t.Cleanup(dynadot.ResetManagedDomains)
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}
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// -----------------------------------------------------------------------
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// Tests
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// -----------------------------------------------------------------------
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// TestRun_WritesSixCanonicalARecords is the headline assertion for #112:
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// running catalyst-dns against a mocked Dynadot endpoint MUST produce six
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// HTTP POSTs covering the wildcard + 5 component records, all carrying
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// add_dns_to_current_setting=yes.
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func TestRun_WritesSixCanonicalARecords(t *testing.T) {
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srv, fake := newFakeDynadot()
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defer srv.Close()
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withManagedDomain(t, "omani.works")
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client := clientPointingAt(srv.URL, "test-key", "test-secret")
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in := inputs{
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APIKey: "test-key",
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APISecret: "test-secret",
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Domain: "omani.works",
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Subdomain: "omantel",
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LBIP: "203.0.113.42",
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}
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var stdout bytes.Buffer
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if err := run(context.Background(), client, in, &stdout); err != nil {
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t.Fatalf("run: %v", err)
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}
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got := fake.recorded()
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if len(got) != 6 {
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t.Fatalf("expected 6 Dynadot POSTs (wildcard + 5 components), got %d", len(got))
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}
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expectedSubdomains := []string{
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"*.omantel",
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"console.omantel",
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"gitea.omantel",
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"harbor.omantel",
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"admin.omantel",
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"api.omantel",
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}
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have := map[string]recordedRequest{}
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for _, rr := range got {
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have[rr.Subdomain] = rr
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}
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for _, sub := range expectedSubdomains {
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rr, ok := have[sub]
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if !ok {
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t.Errorf("missing subdomain %q in recorded requests", sub)
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continue
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}
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if rr.SubRecordType != "A" {
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t.Errorf("%s: expected A record, got %q", sub, rr.SubRecordType)
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}
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if rr.SubRecord != "203.0.113.42" {
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t.Errorf("%s: expected value 203.0.113.42, got %q", sub, rr.SubRecord)
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}
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if rr.Domain != "omani.works" {
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t.Errorf("%s: expected domain omani.works, got %q", sub, rr.Domain)
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}
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if rr.Command != "set_dns2" {
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t.Errorf("%s: expected set_dns2 command, got %q", sub, rr.Command)
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}
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if rr.AddDNSToCurrentSetting != "yes" {
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t.Errorf("%s: missing add_dns_to_current_setting=yes (would WIPE zone!)", sub)
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}
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if rr.APIKey != "test-key" || rr.APISecret != "test-secret" {
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t.Errorf("%s: auth params missing or wrong: key=%q secret=%q", sub, rr.APIKey, rr.APISecret)
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}
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}
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|
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if !strings.Contains(stdout.String(), "Wrote 6 A records") {
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t.Errorf("stdout missing success message: %q", stdout.String())
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}
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}
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|
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|
// TestRun_NeverWipesZone — the strict regression guard for the cardinal
|
||||||
|
// rule (feedback_dynadot_dns.md): every request emitted by catalyst-dns
|
||||||
|
// must carry add_dns_to_current_setting=yes. A regression that drops the
|
||||||
|
// flag on any iteration would silently delete the zone.
|
||||||
|
func TestRun_NeverWipesZone(t *testing.T) {
|
||||||
|
srv, fake := newFakeDynadot()
|
||||||
|
defer srv.Close()
|
||||||
|
withManagedDomain(t, "openova.io")
|
||||||
|
|
||||||
|
client := clientPointingAt(srv.URL, "k", "s")
|
||||||
|
in := inputs{APIKey: "k", APISecret: "s", Domain: "openova.io", Subdomain: "alpha", LBIP: "1.2.3.4"}
|
||||||
|
|
||||||
|
if err := run(context.Background(), client, in, &bytes.Buffer{}); err != nil {
|
||||||
|
t.Fatalf("run: %v", err)
|
||||||
|
}
|
||||||
|
for i, rr := range fake.recorded() {
|
||||||
|
if rr.AddDNSToCurrentSetting != "yes" {
|
||||||
|
t.Errorf("request %d (%s): add_dns_to_current_setting=%q — MUST be 'yes' to avoid wiping zone", i, rr.Subdomain, rr.AddDNSToCurrentSetting)
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
// TestRun_ValidationErrors — each missing input surfaces a clear error;
|
||||||
|
// no Dynadot calls happen when validation fails (so the OpenTofu module
|
||||||
|
// gets a fast, deterministic failure mode).
|
||||||
|
func TestRun_ValidationErrors(t *testing.T) {
|
||||||
|
withManagedDomain(t, "omani.works")
|
||||||
|
srv, fake := newFakeDynadot()
|
||||||
|
defer srv.Close()
|
||||||
|
|
||||||
|
cases := []struct {
|
||||||
|
name string
|
||||||
|
in inputs
|
||||||
|
wantSub string
|
||||||
|
}{
|
||||||
|
{"missing_api_key", inputs{APISecret: "s", Domain: "omani.works", Subdomain: "alpha", LBIP: "1.2.3.4"}, "DYNADOT_API_KEY"},
|
||||||
|
{"missing_api_secret", inputs{APIKey: "k", Domain: "omani.works", Subdomain: "alpha", LBIP: "1.2.3.4"}, "DYNADOT_API_KEY"},
|
||||||
|
{"missing_domain", inputs{APIKey: "k", APISecret: "s", Subdomain: "alpha", LBIP: "1.2.3.4"}, "DOMAIN"},
|
||||||
|
{"missing_subdomain", inputs{APIKey: "k", APISecret: "s", Domain: "omani.works", LBIP: "1.2.3.4"}, "SUBDOMAIN"},
|
||||||
|
{"missing_lb_ip", inputs{APIKey: "k", APISecret: "s", Domain: "omani.works", Subdomain: "alpha"}, "LB_IP"},
|
||||||
|
{"unmanaged_domain", inputs{APIKey: "k", APISecret: "s", Domain: "rogue.example", Subdomain: "alpha", LBIP: "1.2.3.4"}, "managed-domain allowlist"},
|
||||||
|
}
|
||||||
|
for _, tc := range cases {
|
||||||
|
t.Run(tc.name, func(t *testing.T) {
|
||||||
|
before := len(fake.recorded())
|
||||||
|
client := clientPointingAt(srv.URL, "k", "s")
|
||||||
|
err := run(context.Background(), client, tc.in, &bytes.Buffer{})
|
||||||
|
if err == nil {
|
||||||
|
t.Fatal("expected validation error, got nil")
|
||||||
|
}
|
||||||
|
if !strings.Contains(err.Error(), tc.wantSub) {
|
||||||
|
t.Errorf("err = %q; want it to contain %q", err.Error(), tc.wantSub)
|
||||||
|
}
|
||||||
|
// No Dynadot calls should have happened.
|
||||||
|
if got := len(fake.recorded()); got != before {
|
||||||
|
t.Errorf("validation error should not call Dynadot — request count went %d → %d", before, got)
|
||||||
|
}
|
||||||
|
})
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
// TestRun_FailsFastOnDynadotError — when Dynadot rejects a record mid-loop,
|
||||||
|
// run returns the error promptly and does NOT keep writing the remaining
|
||||||
|
// records (so we don't leave a partially-applied zone behind).
|
||||||
|
func TestRun_FailsFastOnDynadotError(t *testing.T) {
|
||||||
|
srv, fake := newFakeDynadot()
|
||||||
|
defer srv.Close()
|
||||||
|
withManagedDomain(t, "openova.io")
|
||||||
|
fake.mu.Lock()
|
||||||
|
fake.failNth = 1
|
||||||
|
fake.failMsg = "rate limited"
|
||||||
|
fake.mu.Unlock()
|
||||||
|
|
||||||
|
client := clientPointingAt(srv.URL, "k", "s")
|
||||||
|
in := inputs{APIKey: "k", APISecret: "s", Domain: "openova.io", Subdomain: "alpha", LBIP: "1.1.1.1"}
|
||||||
|
err := run(context.Background(), client, in, &bytes.Buffer{})
|
||||||
|
if err == nil {
|
||||||
|
t.Fatal("expected error from Dynadot rejection, got nil")
|
||||||
|
}
|
||||||
|
if !strings.Contains(err.Error(), "rate limited") {
|
||||||
|
t.Errorf("error should surface Dynadot error string, got %q", err)
|
||||||
|
}
|
||||||
|
if got := len(fake.recorded()); got != 1 {
|
||||||
|
t.Errorf("expected fail-fast after first request — got %d requests", got)
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
// TestRun_NeverHitsRealDynadot is a paranoia-test: it proves the test
|
||||||
|
// harness substitutes the endpoint correctly. If a future refactor breaks
|
||||||
|
// the host rewrite, this test surfaces the regression by demonstrating
|
||||||
|
// that any unintercepted call to api.dynadot.com would be visible to a
|
||||||
|
// guarded transport.
|
||||||
|
func TestRun_NeverHitsRealDynadot(t *testing.T) {
|
||||||
|
withManagedDomain(t, "omani.works")
|
||||||
|
|
||||||
|
// 1. The happy path through clientPointingAt MUST hit the test server
|
||||||
|
// and never the real Dynadot host.
|
||||||
|
srv, fake := newFakeDynadot()
|
||||||
|
defer srv.Close()
|
||||||
|
client := clientPointingAt(srv.URL, "k", "s")
|
||||||
|
in := inputs{APIKey: "k", APISecret: "s", Domain: "omani.works", Subdomain: "alpha", LBIP: "1.1.1.1"}
|
||||||
|
if err := run(context.Background(), client, in, &bytes.Buffer{}); err != nil {
|
||||||
|
t.Fatalf("happy path through test server failed (rewrite broken?): %v", err)
|
||||||
|
}
|
||||||
|
if got := len(fake.recorded()); got != 6 {
|
||||||
|
t.Errorf("expected 6 requests on test server, got %d (rewrite may be broken)", got)
|
||||||
|
}
|
||||||
|
|
||||||
|
// 2. A transport that refuses non-loopback hosts proves a missing
|
||||||
|
// rewrite would fail-loud rather than silently hit api.dynadot.com.
|
||||||
|
guarded := dynadot.New("k", "s")
|
||||||
|
guarded.HTTP = &http.Client{Transport: roundTripperFunc(func(req *http.Request) (*http.Response, error) {
|
||||||
|
if !strings.HasPrefix(req.URL.Host, "127.0.0.1") && !strings.HasPrefix(req.URL.Host, "localhost") {
|
||||||
|
return nil, errors.New("test attempted to reach " + req.URL.String() + " — would hit real Dynadot")
|
||||||
|
}
|
||||||
|
return nil, errors.New("unreachable")
|
||||||
|
}), Timeout: 2 * time.Second}
|
||||||
|
err := guarded.AddRecord(context.Background(), "omani.works", dynadot.Record{Subdomain: "x", Type: "A", Value: "9.9.9.9"})
|
||||||
|
if err == nil || !strings.Contains(err.Error(), "would hit real Dynadot") {
|
||||||
|
t.Errorf("guard transport should have refused real Dynadot host, got err=%v", err)
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
// roundTripperFunc adapts a function to the http.RoundTripper interface.
|
||||||
|
type roundTripperFunc func(*http.Request) (*http.Response, error)
|
||||||
|
|
||||||
|
func (f roundTripperFunc) RoundTrip(req *http.Request) (*http.Response, error) {
|
||||||
|
return f(req)
|
||||||
|
}
|
||||||
|
|
||||||
|
// TestReadInputsFromEnv reads the documented env-var contract and ensures
|
||||||
|
// each value lands in the right struct field. Cheap belt-and-braces test
|
||||||
|
// to catch a typo in the env-var name.
|
||||||
|
func TestReadInputsFromEnv(t *testing.T) {
|
||||||
|
t.Setenv("DYNADOT_API_KEY", "key123")
|
||||||
|
t.Setenv("DYNADOT_API_SECRET", "sec456")
|
||||||
|
t.Setenv("DOMAIN", "omani.works")
|
||||||
|
t.Setenv("SUBDOMAIN", "omantel")
|
||||||
|
t.Setenv("LB_IP", "203.0.113.42")
|
||||||
|
|
||||||
|
got := readInputsFromEnv()
|
||||||
|
want := inputs{
|
||||||
|
APIKey: "key123",
|
||||||
|
APISecret: "sec456",
|
||||||
|
Domain: "omani.works",
|
||||||
|
Subdomain: "omantel",
|
||||||
|
LBIP: "203.0.113.42",
|
||||||
|
}
|
||||||
|
if got != want {
|
||||||
|
t.Errorf("readInputsFromEnv() = %+v, want %+v", got, want)
|
||||||
|
}
|
||||||
|
}
|
||||||
Loading…
Reference in New Issue
Block a user