alexei.dolgolyov
e3d140c57a
Add a deploy_strategy field to each source's config blob — "" (default), "recreate", or "blue-green" — validated in each source's Validate and read on the deploy path. No new DB column, no migration: the field rides inside the existing SourceConfig JSON and every existing workload decodes "" to its historical behavior (image -> blue-green, others -> recreate). The real gap this closes: dockerfile and static stopped the old container before creating the new one on every redeploy — a downtime window image never had. Their blue-green branch now: - names the new "green" container with a unique suffix so it coexists with the still-serving blue (plumbed into both the container name AND the proxy forwardHost); - skips the collision teardown that destroyed blue early; - gates green — an HTTP readiness probe (deps.Health.Check) when a healthcheck is configured, else the existing liveness window; - swaps the route via a pure upsert (no pre-DeleteRoute) so NPM repoints in place with no gap; - persists green into the single runtime-state row BEFORE reaping blue, so a crash mid-swap can never orphan green or leave the row pointing at a removed container (state.go/teardown.go/reconcile.go stay untouched). image honors explicit "recreate" (reap existing containers after pull, before cutover); its default blue-green path is unchanged. compose stays stack-managed and rejects "blue-green" at Validate so the contract is honest. static forces recreate for storage-backed deno sites — blue-green would mount the same RW volume into both containers at once. Shared helper internal/workload/plugin/strategy.go (ValidateStrategy + BuildGreenName). Backend-only (phase 1); the field is usable today via the app's advanced-JSON editor — a friendly toggle + i18n follow in phase 2. Tests: ValidateStrategy matrix, per-source Validate (incl. the empty-key backward-compat lock), and effectiveStrategy defaults + the deno gate. Design + adversarial review: docs/plans/DEPLOY_STRATEGY_PLAN.md.
50 lines
1.3 KiB
Go
50 lines
1.3 KiB
Go
package image
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import (
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"encoding/json"
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"testing"
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"github.com/alexei/tinyforge/internal/workload/plugin"
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)
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func imageCfg(strategy string) json.RawMessage {
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m := map[string]any{"image": "registry.example.com/o/app", "port": 8080}
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if strategy != "" {
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m["deploy_strategy"] = strategy
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}
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b, _ := json.Marshal(m)
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return b
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}
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func TestValidate_Strategy(t *testing.T) {
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cases := []struct {
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strategy string
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wantErr bool
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}{
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{"", false},
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{"recreate", false},
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{"blue-green", false},
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{"rolling", true},
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{"junk", true},
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}
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for _, c := range cases {
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t.Run("strategy="+c.strategy, func(t *testing.T) {
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err := (&source{}).Validate(imageCfg(c.strategy))
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if (err != nil) != c.wantErr {
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t.Fatalf("Validate(strategy=%q) err=%v, wantErr=%v", c.strategy, err, c.wantErr)
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}
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})
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}
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}
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func TestEffectiveStrategy_DefaultsToBlueGreen(t *testing.T) {
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// image's historical default is blue-green — empty must NOT flip it to
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// recreate (the load-bearing per-source default).
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if got := effectiveStrategy(Config{}); got != plugin.StrategyBlueGreen {
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t.Fatalf("empty strategy = %q, want blue-green (image default)", got)
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}
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if got := effectiveStrategy(Config{DeployStrategy: plugin.StrategyRecreate}); got != plugin.StrategyRecreate {
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t.Fatalf("explicit recreate = %q, want recreate", got)
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}
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}
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