feaT: Allow specifying custom headers in the rio.json

internal/context/cache.go

@@ -0,0 +1,38 @@
+package context
+
+import (
+	"time"
+
+	"github.com/patrickmn/go-cache"
+)
+
+type RepositoryInformation struct {
+	// Headers to include in every response
+	Headers map[string]string
+}
+
+func repoInfoKey(owner, name string) string {
+	return owner + ":" + name
+}
+
+func (c *CacheContext) GetRepositoryInformation(owner, repoName string) *RepositoryInformation {
+	data, found := c.RepositoryInformationCache.Get(repoInfoKey(owner, repoName))
+	if !found {
+		return nil
+	}
+
+	typedData := data.(RepositoryInformation)
+	return &typedData
+}
+
+func (c *CacheContext) SetRepositoryInformation(owner, repoName string, info RepositoryInformation) {
+	c.RepositoryInformationCache.Set(
+		repoInfoKey(owner, repoName),
+		info,
+		cache.DefaultExpiration,
+	)
+}
+
+func MakeRepoInfoCache() cache.Cache {
+	return *cache.New(24*time.Hour, 12*time.Hour)
+}

internal/context/context.go

@@ -3,15 +3,22 @@ package context
 import (
 	"net/http"
 
+	"git.polynom.me/rio/internal/gitea"
 	"git.polynom.me/rio/internal/metrics"
-	"git.polynom.me/rio/internal/repo"
+	"github.com/patrickmn/go-cache"
 )
 
+type CacheContext struct {
+	// Cache for general repository information
+	RepositoryInformationCache cache.Cache
+}
+
 type GlobalContext struct {
 	DefaultCSP   string
 	PagesDomain  string
-	Gitea        *repo.GiteaClient
+	Gitea        *gitea.GiteaClient
 	MetricConfig *metrics.LokiMetricConfig
+	Cache        *CacheContext
 }
 
 type Context struct {