lucifer-server, sqlite3, config: Added database initialization.

.gitignore

@@ -1,3 +1,5 @@
 lucifer-server
 !cmd/**/*
-vendor
+vendor
+/config.yaml
+/sqlite3.db

Gopkg.lock

@@ -1,6 +1,21 @@
 # This file is autogenerated, do not edit; changes may be undone by the next 'dep ensure'.
 
 
+[[projects]]
+  name = "github.com/jmoiron/sqlx"
+  packages = [
+    ".",
+    "reflectx"
+  ]
+  revision = "d161d7a76b5661016ad0b085869f77fd410f3e6a"
+  version = "v1.2.0"
+
+[[projects]]
+  name = "github.com/mattn/go-sqlite3"
+  packages = ["."]
+  revision = "c7c4067b79cc51e6dfdcef5c702e74b1e0fa7c75"
+  version = "v1.10.0"
+
 [[projects]]
   branch = "master"
   name = "golang.org/x/crypto"
@@ -13,6 +28,6 @@
 [solve-meta]
   analyzer-name = "dep"
   analyzer-version = 1
-  inputs-digest = "a0b0b08de3e66a9e5558eaca40ab59cab7d27dbafe9eaf33270a314437c749a0"
+  inputs-digest = "8237f2aa046d402c0ec32f98a3e48419917aeab2979b0b394ce6f7873bc989c2"
   solver-name = "gps-cdcl"
   solver-version = 1

cmd/lucifer-server/main.go

@@ -1,5 +1,20 @@
 package main
 
+import (
+	"log"
+
+	"git.aiterp.net/lucifer/lucifer/database/sqlite"
+	"git.aiterp.net/lucifer/lucifer/internal/config"
+)
+
 func main() {
+	conf, err := config.Load("./config.yaml", "/etc/lucifer/lucifer.yaml")
+	if err != nil {
+		log.Fatalln("Failed to load configuration:", err)
+	}
 
+	err = sqlite.Initialize(conf.DB.FileName)
+	if err != nil {
+		log.Fatalln("Failed to set up database:", err)
+	}
 }

database/sqlite/init.go

@@ -1,5 +1,60 @@
 package sqlite
 
-func Initialize() {
+import (
+	"strings"
 
+	"github.com/jmoiron/sqlx"
+
+	// sqlite driver
+	_ "github.com/mattn/go-sqlite3"
+)
+
+var db *sqlx.DB
+
+// Initialize sets up the sqlite database.
+func Initialize(filename string) (err error) {
+	if db != nil {
+		panic("sqlite.Initialize called twice!")
+	}
+
+	db, err = sqlx.Open("sqlite3", filename)
+	if err != nil {
+		db = nil
+		return err
+	}
+
+	err = db.Ping()
+	if err != nil {
+		db.Close()
+		db = nil
+		return err
+	}
+
+	tableDefs := strings.Split(tableDefStr, ";")
+	for _, tableDef := range tableDefs {
+		_, err := db.Exec(strings.Trim(tableDef, "\n  "))
+		if err != nil {
+			db.Close()
+			db = nil
+			return err
+		}
+	}
+
+	return nil
 }
+
+const tableDefStr = `
+
+CREATE TABLE IF NOT EXISTS "user" (
+	id INTEGER PRIMARY KEY AUTOINCREMENT,
+	name VARCHAR(64) NOT NULL UNIQUE,
+	hash VARCHAR(128) NOT NULL
+);
+
+CREATE TABLE IF NOT EXISTS "session" (
+	id CHAR(64) PRIMARY KEY,
+	user_id INTEGER NOT NULL,
+	expire_date DATE NOT NULL
+);
+
+`

internal/config/config.go

@@ -0,0 +1,38 @@
+package config
+
+import (
+	"os"
+
+	"gopkg.in/yaml.v2"
+)
+
+// Config is application configuration.
+type Config struct {
+	DB struct {
+		FileName string `yaml:"file_name"`
+	} `yaml:"db"`
+}
+
+// Load loads the first valid config file from the list of file paths.
+func Load(filePaths ...string) (Config, error) {
+	file, err := os.Open(filePaths[0])
+	if err != nil {
+		if len(filePaths) > 1 {
+			return Load(filePaths[1:]...)
+		}
+
+		return Config{}, err
+	}
+
+	config := Config{}
+	err = yaml.NewDecoder(file).Decode(&config)
+	if err != nil {
+		if len(filePaths) > 1 {
+			return Load(filePaths[1:]...)
+		}
+
+		return Config{}, err
+	}
+
+	return config, nil
+}