Move code into new component package

This commit cleans up the resources in the 'embed' package, and instead
moves them into subpackages of a new 'compose' package. This makes sure
that '.env' templates and docker compose contexts are located in the
same location.

env/component.go

@@ -2,15 +2,27 @@ package env
 
 import (
 	"path/filepath"
+	"time"
 
+	"github.com/FAU-CDI/wisski-distillery/component"
+	"github.com/FAU-CDI/wisski-distillery/component/dis"
+	"github.com/FAU-CDI/wisski-distillery/component/resolver"
+	"github.com/FAU-CDI/wisski-distillery/component/self"
+	"github.com/FAU-CDI/wisski-distillery/component/sql"
+	"github.com/FAU-CDI/wisski-distillery/component/ssh"
+	"github.com/FAU-CDI/wisski-distillery/component/triplestore"
+	"github.com/FAU-CDI/wisski-distillery/component/web"
 	"github.com/FAU-CDI/wisski-distillery/embed"
 	"github.com/FAU-CDI/wisski-distillery/internal/stack"
 )
 
+// TODO: Remove me when migration is complete
+type Component = component.Component
+
 // TODO: Move everything into specific subpackages
 
 // Stacks returns the Stacks of this distillery
-func (dis *Distillery) Components() []Component {
+func (dis *Distillery) Components() []component.Component {
 	// TODO: Do we want to cache these components?
 	return []Component{
 		dis.Web(),
@@ -23,17 +35,69 @@ func (dis *Distillery) Components() []Component {
 	}
 }
 
-// Component represents a component of the distillery
-type Component interface {
-	Name() string // Name is the name of this component
+// Web returns the web component belonging to this distillery
+func (dis *Distillery) Web() (web web.Web) {
+	dis.makeComponent(web, &web.ComponentBase)
+	return
+}
 
-	Stack() stack.Installable                                           // Stack returns the installable stack representing this component
-	Context(parent stack.InstallationContext) stack.InstallationContext // context for installation
+// Self returns the self component belonging to this distillery
+func (dis *Distillery) Self() (self self.Self) {
+	dis.makeComponent(self, &self.ComponentBase)
+	return
+}
 
-	Path() string // Path returns the path to this component
+// Resolver returns the resolver component belonging to this distillery
+func (dis *Distillery) Resolver() (resolver resolver.Resolver) {
+	resolver.ConfigName = "prefix.cfg" // TODO: Move into core?
+	resolver.Executable = dis.CurrentExecutable()
+
+	dis.makeComponent(resolver, &resolver.ComponentBase)
+	return
+}
+
+// Dis returns the dis component belonging to this distillery
+func (dis *Distillery) Dis() (ddis dis.Dis) {
+	ddis.Executable = dis.CurrentExecutable()
+
+	dis.makeComponent(ddis, &ddis.ComponentBase)
+	return
+}
+
+// SSH returns the SSH component belonging to this distillery
+func (dis *Distillery) SSH() (ssh ssh.SSH) {
+	dis.makeComponent(ssh, &ssh.ComponentBase)
+	return
+}
+
+// SQL returns the SQL component belonging to this distillery
+func (dis *Distillery) SQL() (sql sql.SQL) {
+	sql.ServerURL = dis.Upstream.SQL
+	sql.PollContext = dis.Context()
+	sql.PollInterval = time.Second
+
+	dis.makeComponent(sql, &sql.ComponentBase)
+	return
+}
+
+// Triplestore returns the TriplestoreComponent belonging to this distillery
+func (dis *Distillery) Triplestore() (ts triplestore.Triplestore) {
+	ts.BaseURL = "http://" + dis.Upstream.Triplestore
+	ts.PollContext = dis.Context()
+	ts.PollInterval = time.Second
+
+	dis.makeComponent(ts, &ts.ComponentBase)
+	return
+}
+
+// makeComponent updates the baseComponent belonging to component
+func (dis *Distillery) makeComponent(component component.Component, base *component.ComponentBase) {
+	base.Dir = dis.getComponentPath(component)
+	base.Config = dis.Config
 }
 
 // asCoreStack treats the provided stack as a core component of this distillery.
+// TODO: this should no longer be used
 func (dis *Distillery) makeComponentStack(component Component, stack stack.Installable) stack.Installable {
 	stack.Dir = dis.getComponentPath(component)