Support config values via ENV
Change-Id: I95940c27b9ab36469ffedb564188533259a3544f
diff --git a/config/config.go b/config/config.go
index a4f9f77..cebf10d 100644
--- a/config/config.go
+++ b/config/config.go
@@ -3,6 +3,7 @@
import (
"fmt"
"os"
+ "strconv"
"github.com/KorAP/Koral-Mapper/ast"
"github.com/KorAP/Koral-Mapper/parser"
@@ -196,6 +197,9 @@
Lists: allLists,
}
+ // Apply environment variable overrides (ENV > config file)
+ ApplyEnvOverrides(result)
+
// Apply defaults if not specified
ApplyDefaults(result)
@@ -224,6 +228,32 @@
}
}
+// ApplyEnvOverrides overrides configuration fields from environment variables.
+// All environment variables are uppercase and prefixed with KORAL_MAPPER_.
+// Non-empty environment values override any previously loaded config values.
+func ApplyEnvOverrides(config *MappingConfig) {
+ envMappings := map[string]*string{
+ "KORAL_MAPPER_SERVER": &config.Server,
+ "KORAL_MAPPER_SDK": &config.SDK,
+ "KORAL_MAPPER_STYLESHEET": &config.Stylesheet,
+ "KORAL_MAPPER_SERVICE_URL": &config.ServiceURL,
+ "KORAL_MAPPER_COOKIE_NAME": &config.CookieName,
+ "KORAL_MAPPER_LOG_LEVEL": &config.LogLevel,
+ }
+
+ for envKey, field := range envMappings {
+ if val := os.Getenv(envKey); val != "" {
+ *field = val
+ }
+ }
+
+ if val := os.Getenv("KORAL_MAPPER_PORT"); val != "" {
+ if port, err := strconv.Atoi(val); err == nil {
+ config.Port = port
+ }
+ }
+}
+
// validateMappingLists validates a slice of mapping lists (without duplicate ID checking)
func validateMappingLists(lists []MappingList) error {
for i, list := range lists {