internal: Annotate all components with groups

This commit ensures that the compiler has to check every component
against the groups they implement by explicitly annotating the
appropriate interfaces.

internal/dis/component.go

@@ -13,6 +13,12 @@ import (
 func (dis *Distillery) init() {
 	dis.poolInit.Do(func() {
 		dis.pool.Init = component.Init
+		lazy.RegisterPoolGroup[component.Backupable](&dis.pool)
+		lazy.RegisterPoolGroup[component.Snapshotable](&dis.pool)
+		lazy.RegisterPoolGroup[component.DistilleryFetcher](&dis.pool)
+		lazy.RegisterPoolGroup[component.Installable](&dis.pool)
+		lazy.RegisterPoolGroup[component.Provisionable](&dis.pool)
+		lazy.RegisterPoolGroup[component.Servable](&dis.pool)
 	})
 }
 

internal/dis/component/control/control.go

@@ -16,6 +16,10 @@ type Control struct {
 	Servables []component.Servable
 }
 
+var (
+	_ component.Installable = (*Control)(nil)
+)
+
 func (control Control) Path() string {
 	return filepath.Join(control.Still.Config.DeployRoot, "core", "dis")
 }

internal/dis/component/control/home/home.go

@@ -24,6 +24,10 @@ type Home struct {
 	homeBytes     lazy.Lazy[[]byte]
 }
 
+var (
+	_ component.Servable = (*Home)(nil)
+)
+
 func (*Home) Routes() []string { return []string{"/"} }
 
 func (home *Home) Handler(ctx context.Context, route string, io stream.IOStream) (http.Handler, error) {

internal/dis/component/control/info/info.go

@@ -26,6 +26,11 @@ type Info struct {
 	SnapshotsLog *logger.Logger
 }
 
+var (
+	_ component.DistilleryFetcher = (*Info)(nil)
+	_ component.Servable          = (*Info)(nil)
+)
+
 func (*Info) Routes() []string { return []string{"/dis/"} }
 
 func (info *Info) Handler(ctx context.Context, route string, io stream.IOStream) (handler http.Handler, err error) {

internal/dis/component/control/static/static.go

@@ -15,6 +15,10 @@ type Static struct {
 	component.Base
 }
 
+var (
+	_ component.Servable = (*Static)(nil)
+)
+
 func (*Static) Routes() []string { return []string{"/static/"} }
 
 //go:embed dist

internal/dis/component/exporter/extras_bookkeeping.go

@@ -13,6 +13,10 @@ type Bookkeeping struct {
 	component.Base
 }
 
+var (
+	_ component.Snapshotable = (*Bookkeeping)(nil)
+)
+
 // SnapshotNeedsRunning returns if this Snapshotable requires a running instance.
 func (Bookkeeping) SnapshotNeedsRunning() bool { return false }
 

internal/dis/component/exporter/extras_config.go

@@ -12,6 +12,10 @@ type Config struct {
 	component.Base
 }
 
+var (
+	_ = (component.Backupable)((*Config)(nil))
+)
+
 func (*Config) BackupName() string {
 	return "config"
 }

internal/dis/component/exporter/extras_filesystem.go

@@ -10,6 +10,10 @@ type Filesystem struct {
 	component.Base
 }
 
+var (
+	_ component.Snapshotable = (*Filesystem)(nil)
+)
+
 // SnapshotNeedsRunning returns if this Snapshotable requires a running instance.
 func (Filesystem) SnapshotNeedsRunning() bool { return false }
 

internal/dis/component/exporter/extras_pathbuilders.go

@@ -14,6 +14,10 @@ type Pathbuilders struct {
 	Instances *instances.Instances
 }
 
+var (
+	_ component.Snapshotable = (*Pathbuilders)(nil)
+)
+
 func (Pathbuilders) SnapshotNeedsRunning() bool { return true }
 
 func (Pathbuilders) SnapshotName() string { return "pathbuilders" }

internal/dis/component/resolver/resolver.go

@@ -26,6 +26,10 @@ type Resolver struct {
 	handler lazy.Lazy[wdresolve.ResolveHandler] // handler
 }
 
+var (
+	_ component.Servable = (*Resolver)(nil)
+)
+
 func (resolver *Resolver) Routes() []string { return []string{"/go/", "/wisski/get/"} }
 
 func (resolver *Resolver) Handler(ctx context.Context, route string, io stream.IOStream) (http.Handler, error) {

internal/dis/component/solr/solr.go

@@ -17,6 +17,10 @@ type Solr struct {
 	PollInterval time.Duration // duration to wait for during wait
 }
 
+var (
+	_ component.Installable = (*Solr)(nil)
+)
+
 func (s *Solr) Path() string {
 	return filepath.Join(s.Still.Config.DeployRoot, "core", "solr")
 }

internal/dis/component/sql/sql.go

@@ -20,6 +20,12 @@ type SQL struct {
 	lazyNetwork lazy.Lazy[string]
 }
 
+var (
+	_ component.Backupable   = (*SQL)(nil)
+	_ component.Snapshotable = (*SQL)(nil)
+	_ component.Installable  = (*SQL)(nil)
+)
+
 func (sql *SQL) Path() string {
 	return filepath.Join(sql.Still.Config.DeployRoot, "core", "sql")
 }

internal/dis/component/ssh2/ssh2.go

@@ -14,6 +14,10 @@ type SSH2 struct {
 	Instances *instances.Instances
 }
 
+var (
+	_ component.Installable = (*SSH2)(nil)
+)
+
 // GlobalKeys returns the global authorized keys
 func (s *SSH2) GlobalKeys() ([]ssh.PublicKey, error) {
 	file, err := s.Environment.Open(s.Config.GlobalAuthorizedKeysFile)

internal/dis/component/triplestore/triplestore.go

@@ -17,6 +17,12 @@ type Triplestore struct {
 	PollInterval time.Duration // duration to wait for during wait
 }
 
+var (
+	_ component.Backupable   = (*Triplestore)(nil)
+	_ component.Snapshotable = (*Triplestore)(nil)
+	_ component.Installable  = (*Triplestore)(nil)
+)
+
 func (ts *Triplestore) Path() string {
 	return filepath.Join(ts.Still.Config.DeployRoot, "core", "triplestore")
 }

internal/dis/component/web/web.go

@@ -15,6 +15,10 @@ type Web struct {
 	component.Base
 }
 
+var (
+	_ component.Installable = (*Web)(nil)
+)
+
 func (web *Web) Path() string {
 	return filepath.Join(web.Still.Config.DeployRoot, "core", "web")
 }

internal/wisski/ingredient/barrel/drush/cron.go

@@ -45,6 +45,10 @@ type LastCronFetcher struct {
 	Drush *Drush
 }
 
+var (
+	_ ingredient.WissKIFetcher = (*LastCronFetcher)(nil)
+)
+
 func (lbr *LastCronFetcher) Fetch(flags ingredient.FetcherFlags, info *status.WissKI) (err error) {
 	if flags.Quick {
 		return

internal/wisski/ingredient/barrel/drush/update.go

@@ -56,6 +56,10 @@ type LastUpdateFetcher struct {
 	Drush *Drush
 }
 
+var (
+	_ ingredient.WissKIFetcher = (*LastUpdateFetcher)(nil)
+)
+
 func (lbr *LastUpdateFetcher) Fetch(flags ingredient.FetcherFlags, info *status.WissKI) (err error) {
 	info.LastUpdate, err = lbr.Drush.LastUpdate(flags.Context)
 	return

internal/wisski/ingredient/barrel/running.go

@@ -23,6 +23,10 @@ type RunningFetcher struct {
 	Barrel *Barrel
 }
 
+var (
+	_ ingredient.WissKIFetcher = (*RunningFetcher)(nil)
+)
+
 func (rf *RunningFetcher) Fetch(flags ingredient.FetcherFlags, info *status.WissKI) (err error) {
 	info.Running, err = rf.Barrel.Running(flags.Context)
 	return

internal/wisski/ingredient/barrel/ssh/ssh.go

@@ -17,6 +17,10 @@ type SSH struct {
 	Barrel *barrel.Barrel
 }
 
+var (
+	_ ingredient.WissKIFetcher = (*SSH)(nil)
+)
+
 func (ssh *SSH) Keys() ([]ssh.PublicKey, error) {
 	file, err := ssh.Environment.Open(ssh.Barrel.AuthorizedKeysPath())
 	if environment.IsNotExist(err) {

internal/wisski/ingredient/info/info.go

@@ -20,6 +20,10 @@ type Info struct {
 	Analytics *lazy.PoolAnalytics
 }
 
+var (
+	_ ingredient.WissKIFetcher = (*Info)(nil)
+)
+
 // Information fetches information about this WissKI.
 // TODO: Rework this to be able to determine what kind of information is available.
 func (wisski *Info) Information(ctx context.Context, quick bool) (info status.WissKI, err error) {

internal/wisski/ingredient/info/snapshots.go

@@ -11,6 +11,10 @@ type SnapshotsFetcher struct {
 	Info *Info
 }
 
+var (
+	_ ingredient.WissKIFetcher = (*SnapshotsFetcher)(nil)
+)
+
 func (lbr *SnapshotsFetcher) Fetch(flags ingredient.FetcherFlags, info *status.WissKI) (err error) {
 	if flags.Quick {
 		return

internal/wisski/ingredient/locker/lock.go

@@ -13,6 +13,10 @@ type Locker struct {
 	ingredient.Base
 }
 
+var (
+	_ = (ingredient.WissKIFetcher)((*Locker)(nil))
+)
+
 var Locked = exit.Error{
 	Message:  "WissKI Instance is locked for administrative operations",
 	ExitCode: exit.ExitGeneric,

internal/wisski/ingredient/php/extras/pathbuilder.go

@@ -17,6 +17,10 @@ type Pathbuilder struct {
 	PHP *php.PHP
 }
 
+var (
+	_ ingredient.WissKIFetcher = (*Pathbuilder)(nil)
+)
+
 //go:embed pathbuilder.php
 var pathbuilderPHP string
 

internal/wisski/ingredient/php/extras/prefixes.go

@@ -25,6 +25,10 @@ type Prefixes struct {
 	MStore *mstore.MStore
 }
 
+var (
+	_ ingredient.WissKIFetcher = (*Prefixes)(nil)
+)
+
 // NoPrefix checks if this WissKI instance is excluded from generating prefixes.
 // TODO: Move this to the database!
 func (prefixes *Prefixes) NoPrefix() bool {

internal/wisski/ingredient/php/extras/stats.go

@@ -16,6 +16,10 @@ type Stats struct {
 	PHP *php.PHP
 }
 
+var (
+	_ ingredient.WissKIFetcher = (*Stats)(nil)
+)
+
 //go:embed stats.php
 var statsPHP string
 

internal/wisski/ingredient/php/users/users.go

@@ -18,6 +18,10 @@ type Users struct {
 	PHP *php.PHP
 }
 
+var (
+	_ ingredient.WissKIFetcher = (*Users)(nil)
+)
+
 //go:embed users.php
 var usersPHP string
 

internal/wisski/ingredients.go

@@ -14,6 +14,7 @@ import (
 func (wisski *WissKI) init() {
 	wisski.poolInit.Do(func() {
 		wisski.pool.Init = ingredient.Init
+		lazy.RegisterPoolGroup[ingredient.WissKIFetcher](&wisski.pool)
 	})
 }
 

pkg/lazy/pool.go

@@ -2,6 +2,8 @@ package lazy
 
 import (
 	"reflect"
+
+	"github.com/tkw1536/goprogram/lib/reflectx"
 )
 
 // Pool represents a pool of laziliy initialized and potentially referencing Component instances.
@@ -18,12 +20,23 @@ type Pool[Component any, InitParams any] struct {
 	// Init is called on every component to be initialized.
 	Init func(Component, InitParams) Component
 
-	// Analytics are written on the first retrieval operation on this Pool
-	Analytics PoolAnalytics
+	// Analytics are written on the first retrieval operation on this Pool.
+	//
+	// Contains all groups and structs that are referenced during initialization.
+	// To add extra groups, call RegisterPoolGroup.
+	Analytics   PoolAnalytics
+	extraGroups []reflect.Type
 
 	all Lazy[[]Component]
 }
 
+// RegisterPoolGroup registers the given group type to be added to the pools' analytics.
+//
+// Only groups not referenced during initialization need to be registered explicitly.
+func RegisterPoolGroup[Group any, Component any, InitParams any](p *Pool[Component, InitParams]) {
+	p.extraGroups = append(p.extraGroups, reflectx.TypeOf[Group]())
+}
+
 // All initializes or returns all components stored in this pool.
 //
 // The All function should return an array of calls to [Make] with the provided context.
@@ -48,7 +61,7 @@ func (p *Pool[Component, InitParams]) All(Params InitParams, All func(context *P
 		context.process(all)
 
 		// write out analytics
-		context.anal(&p.Analytics)
+		context.anal(&p.Analytics, p.extraGroups)
 		return all
 	})
 }
@@ -58,10 +71,6 @@ type PoolContext[Component any] struct {
 	init func(Component) Component                         // initializes a new component
 	all  func(context *PoolContext[Component]) []Component // initializes all components
 
-	// cache for metas
-
-	// function to return all components
-
 	metaCache map[reflect.Type]meta[Component]
 	cache     map[string]Component     // cached components
 	queue     []delayedInit[Component] // init queue

pkg/lazy/pool_anal.go

@@ -29,7 +29,7 @@ type PoolAnalyticsGroup struct {
 }
 
 // anal writes analytics about this context to anal
-func (context *PoolContext[Component]) anal(anal *PoolAnalytics) {
+func (context *PoolContext[Component]) anal(anal *PoolAnalytics, groups []reflect.Type) {
 	anal.Components = make(map[string]*PoolAnalyticsComponent, len(context.metaCache))
 	anal.Groups = make(map[string]*PoolAnalyticsGroup)
 
@@ -51,6 +51,10 @@ func (context *PoolContext[Component]) anal(anal *PoolAnalytics) {
 		}
 	}
 
+	// collect interfaces to analyze
+	ifaces := make([]reflect.Type, len(groups))
+	copy(ifaces, groups)
+
 	// take all of the components out of the cache
 	for _, meta := range context.metaCache {
 		anal.Components[meta.Name].Type = meta.Name
@@ -59,34 +63,39 @@ func (context *PoolContext[Component]) anal(anal *PoolAnalytics) {
 		})
 
 		anal.Components[meta.Name].IFields = collection.MapValues(meta.IFields, func(key string, iface reflect.Type) string {
-			name := nameOf(iface)
-
-			if _, ok := anal.Groups[name]; !ok {
-				types := collection.FilterClone(tpPointers, func(tp reflect.Type) bool {
-					return tp.AssignableTo(iface)
-				})
-
-				anal.Groups[name] = &PoolAnalyticsGroup{
-					Type: name,
-					Components: collection.MapSlice(types, func(tp reflect.Type) string {
-						cname := nameOf(tp.Elem())
-						anal.Components[cname].Groups = append(anal.Components[cname].Groups, name)
-						return cname
-					}),
-				}
-
-				mcount := iface.NumMethod()
-				anal.Groups[name].Methods = make(map[string]string, mcount)
-				for i := 0; i < mcount; i++ {
-					method := iface.Method(i)
-					anal.Groups[name].Methods[method.Name] = method.Type.String()
-				}
-			}
-
-			return name
+			ifaces = append(ifaces, iface)
+			return nameOf(iface)
 		})
 	}
 
+	// and analyze all ifaces
+	for _, iface := range ifaces {
+		name := nameOf(iface)
+		if _, ok := anal.Groups[name]; ok {
+			continue
+		}
+
+		types := collection.FilterClone(tpPointers, func(tp reflect.Type) bool {
+			return tp.AssignableTo(iface)
+		})
+
+		anal.Groups[name] = &PoolAnalyticsGroup{
+			Type: name,
+			Components: collection.MapSlice(types, func(tp reflect.Type) string {
+				cname := nameOf(tp.Elem())
+				anal.Components[cname].Groups = append(anal.Components[cname].Groups, name)
+				return cname
+			}),
+		}
+
+		mcount := iface.NumMethod()
+		anal.Groups[name].Methods = make(map[string]string, mcount)
+		for i := 0; i < mcount; i++ {
+			method := iface.Method(i)
+			anal.Groups[name].Methods[method.Name] = method.Type.String()
+		}
+	}
+
 	for _, comp := range anal.Components {
 		slices.Sort(comp.Groups)
 	}