Initial Commit

pkg/cache.go

@@ -3,8 +3,10 @@ package main
 import (
 	"crypto/sha1"
 	"encoding/hex"
+	"encoding/json"
 	"time"
 
+	"github.com/grafana/grafana_plugin_model/go/datasource"
 	cache "github.com/patrickmn/go-cache"
 )
 
@@ -30,9 +32,18 @@ func (c *Cache) Get(request string) (interface{}, bool) {
 	return c.cache.Get(request)
 }
 
-// Hash converts the given text string to hash string
-func Hash(text string) string {
+// HashString converts the given text string to hash string
+func HashString(text string) string {
 	hash := sha1.New()
 	hash.Write([]byte(text))
 	return hex.EncodeToString(hash.Sum(nil))
 }
+
+// HashDatasourceInfo converts the given datasource info to hash string
+func HashDatasourceInfo(dsInfo *datasource.DatasourceInfo) string {
+	digester := sha1.New()
+	if err := json.NewEncoder(digester).Encode(dsInfo); err != nil {
+		panic(err) // This shouldn't be possible but just in case DatasourceInfo changes
+	}
+	return hex.EncodeToString(digester.Sum(nil))
+}