Added documentation to functions and basic JWT generation

server/environment.go

@@ -0,0 +1,31 @@
+package server
+
+import (
+	"os"
+	"strconv"
+)
+
+// Get an environment variable, specifying a default value if its not set
+func GetEnvDefault(key string, defaultValue string) string {
+	val, exists := os.LookupEnv(key)
+	if !exists {
+		return defaultValue
+	}
+	return val
+}
+
+// Get an environment variable as an int64, specifying a default value if its
+// not set or can't be parsed properly into an int64
+func GetEnvInt64(key string, defaultValue int64) int64 {
+	val, exists := os.LookupEnv(key)
+	if !exists {
+		return defaultValue
+	}
+
+	intVal, err := strconv.ParseInt(val, 10, 64)
+	if err != nil {
+		return defaultValue
+	}
+	return intVal
+
+}