Validate packages to only use predefined categories (#100)

This required to move the categories to util package.

CHANGELOG.md

@@ -10,6 +10,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 * Add validation check that Kibana min/max are valid semver versions. [#99](https://github.com/elastic/integrations-registry/pull/99)
 * Adding Cache-Control max-age headers to all http responses set to 1h. [#101](https://github.com/elastic/integrations-registry/pull/101)
+* Validate packages to guarantee only predefined categories can be used. [#100](https://github.com/elastic/integrations-registry/pull/100)
 
 ### Changed
 

categories.go

@@ -9,10 +9,7 @@ import (
 	"github.com/elastic/integrations-registry/util"
 )
 
-var categoryTitles = map[string]string{
-	"logs":    "Logs",
-	"metrics": "Metrics",
-}
+
 
 type Category struct {
 	Id    string `yaml:"id" json:"id"`
@@ -85,7 +82,7 @@ func getCategoriesOutput(categories map[string]*Category) ([]byte, error) {
 	var outputCategories []*Category
 	for _, k := range keys {
 		c := categories[k]
-		if title, ok := categoryTitles[c.Title]; ok {
+		if title, ok := util.CategoryTitles[c.Title]; ok {
 			c.Title = title
 		}
 		outputCategories = append(outputCategories, c)

util/package.go

@@ -16,6 +16,11 @@ import (
 
 const defaultType = "integration"
 
+var CategoryTitles = map[string]string{
+	"logs":    "Logs",
+	"metrics": "Metrics",
+}
+
 type Package struct {
 	Name          string  `yaml:"name" json:"name"`
 	Title         *string `yaml:"title,omitempty" json:"title,omitempty"`
@@ -217,5 +222,11 @@ func (p *Package) Validate() error {
 		}
 	}
 
+	for _, c := range p.Categories {
+		if _, ok := CategoryTitles[c]; !ok {
+			return fmt.Errorf("invalid category: %s", c)
+		}
+	}
+
 	return nil
 }

util/package_test.go

@@ -62,6 +62,16 @@ var packageTests = []struct {
 					Max: "4.5.6",
 				},
 			},
+			Categories: []string{"metrics", "logs", "foo"},
+		},
+		false,
+		"invalid category ",
+	},
+	{
+		Package{
+			Title:       &title,
+			Description: "my description",
+			Categories:  []string{"metrics", "logs"},
 		},
 		true,
 		"complete",