feat: add spec definition api with versioning

internal/agent/controller/persistence/controller.go

@@ -9,13 +9,12 @@ import (
 	"path/filepath"
 
 	"forge.cadoles.com/Cadoles/emissary/internal/agent"
-	"forge.cadoles.com/Cadoles/emissary/internal/spec"
 	"github.com/pkg/errors"
 	"gitlab.com/wpetit/goweb/logger"
 )
 
 type Controller struct {
-	trackedSpecRevisions map[spec.Name]int
+	trackedSpecRevisions map[string]map[string]int
 	filename             string
 	loaded               bool
 }
@@ -78,36 +77,39 @@ func (c *Controller) specChanged(specs agent.Specs) bool {
 		return true
 	}
 
-	for name, spec := range specs {
-		trackedRevision, exists := c.trackedSpecRevisions[name]
+	for name, specVersions := range specs {
+		trackedSpecs, exists := c.trackedSpecRevisions[name]
 		if !exists {
 			return true
 		}
 
-		if trackedRevision != spec.SpecRevision() {
-			return true
-		}
-	}
+		for version, spec := range specVersions {
+			trackedRevision, exists := trackedSpecs[version]
+			if !exists {
+				return true
+			}
 
-	for trackedSpecName, trackedRevision := range c.trackedSpecRevisions {
-		spec, exists := specs[trackedSpecName]
-		if !exists {
-			return true
+			if trackedRevision != spec.SpecRevision() {
+				return true
+			}
 		}
 
-		if trackedRevision != spec.SpecRevision() {
-			return true
-		}
 	}
 
 	return false
 }
 
 func (c *Controller) trackSpecsRevisions(specs agent.Specs) {
-	c.trackedSpecRevisions = make(map[spec.Name]int)
+	c.trackedSpecRevisions = make(map[string]map[string]int)
 
-	for name, spec := range specs {
-		c.trackedSpecRevisions[name] = spec.SpecRevision()
+	for name, specVersions := range specs {
+		if _, exists := c.trackedSpecRevisions[name]; !exists {
+			c.trackedSpecRevisions[name] = make(map[string]int)
+		}
+
+		for version, spec := range specVersions {
+			c.trackedSpecRevisions[name][version] = spec.SpecRevision()
+		}
 	}
 }
 
@@ -167,7 +169,7 @@ func (c *Controller) writeState(ctx context.Context, state *agent.State) error {
 	}
 
 	name := f.Name()
-	if err := ioutil.WriteFile(name, data, os.ModePerm); err != nil {
+	if err := os.WriteFile(name, data, os.ModePerm); err != nil {
 		return errors.Errorf("cannot write data to temporary file %q: %v", name, err)
 	}
 
@@ -213,7 +215,7 @@ func (c *Controller) writeState(ctx context.Context, state *agent.State) error {
 func NewController(filename string) *Controller {
 	return &Controller{
 		filename:             filename,
-		trackedSpecRevisions: make(map[spec.Name]int),
+		trackedSpecRevisions: make(map[string]map[string]int),
 	}
 }