1 files changed, 84 insertions, 0 deletions
diff --git a/utils/runtime_config.go b/utils/runtime_config.go
new file mode 100644
index 0000000..42170f6
--- /dev/null
+++ b/utils/runtime_config.go
@@ -0,0 +1,84 @@
+
+package utils
+
+import (
+	"fmt"
+	"log"
+	"flag"
+	"os"
+	"io/ioutil"
+	"encoding/json"
+)
+
+type RuntimeConfig struct {
+	Path string
+	Debug bool
+	Http HttpConfig `json:"http"`
+	Database DatabaseConfig `json:"database"`
+}
+
+type HttpConfig struct {
+	Host string `json:"bind_host"`
+	Port string `json:"bind_port"`
+	Static string `json:"static"`
+	Templates string `json:"templates"`
+	Storage string `json:"storage"`
+}
+
+type DatabaseConfig struct {
+	Socket string `json:"socket"`
+	User string `json:"user"`
+	Database string `json:"database"`
+	Debug bool
+}
+
+func GetRuntimeConfig() RuntimeConfig {
+
+	// init empty return value
+	config := RuntimeConfig{}
+
+	// read command line flags
+	flag.StringVar(&config.Path, "c", "/etc/ceres/config.json", "Path to ceres configuration file")
+	flag.BoolVar(&config.Debug, "d", false, "Use this flag if you are in a development environment")
+	flag.Parse()
+
+	// open config file
+	configFile, err := os.Open(config.Path)
+	defer configFile.Close()
+	if err != nil {
+		log.Fatalf("Could not open configuration file %s", config.Path)
+	}
+
+	// read byte content
+	configData, err := ioutil.ReadAll(configFile)
+	if err != nil {
+		log.Fatalf("Could not read configuration file %s", config.Path)
+	}
+
+	// parse content to config structs
+	err = json.Unmarshal(configData, &config)
+	if err != nil {
+		log.Fatalf("Could not parse configuration file %s", config.Path)
+	}
+
+	// override defaults if in debugging mode
+	if config.Debug {
+		config.Http.Static = "./data/static"
+		config.Http.Templates = "./data/templates"
+		config.Http.Storage = "./data/storage"
+	}
+
+	// copy debug value
+	config.Database.Debug = config.Debug
+
+	// print config if in debug mode
+	if config.Debug {
+		configuration,err := json.MarshalIndent(config, "", "    ")
+		if err != nil {
+			log.Fatal(err)
+		}
+		fmt.Print("Used config: " + string(configuration) + "\n")
+	}
+
+	return config
+}