Connect to db (not working yet)

.gitignore

@@ -29,4 +29,7 @@ config/__pycache__
 
 # Template generated files:
 src/docker-compose.yml
-src/clean-data.sh
+src/clean-data.sh
+
+# NGINX API Binary
+bin

config/config.py

@@ -7,7 +7,7 @@
 
 ## Database Variables
 db = {}
-#- db['root_pw'] = 'RootPassWord'
+db['root_pw'] = 'RootPassWord'
 db['enabled'] = True
 db['user'] = 'DBUser'
 db['user_pw'] = 'DBUserPassWord'
@@ -15,3 +15,9 @@ db['db'] = 'Database Name'
 #- db['data_path_mysql'] = '/var/lib/mysql'
 #- db['data_path_mysql_backup'] = '/var/lib/mysql'
 #- db['port'] = 3306
+#- db['host'] = localhost
+
+## Api Configuration
+api = {}
+#- api['ip'] = '0.0.0.0'
+#- api['port'] = 81

config/template.py

@@ -14,7 +14,7 @@ def template(filename, target_path):
     # Load Template
     template = env.get_template(filename)
     # Render Output
-    content = template.render(db=config.db)
+    content = template.render(db=config.db,api=config.api)
     # Write Template to file
     filename_without_ext = os.path.splitext(filename)[0]
     cooked_file = target_path+filename_without_ext
@@ -25,4 +25,7 @@ def template(filename, target_path):
 # Render the templates:
 ## Create Docker-Compose
 template("docker-compose.yml.j2", "./src/")
+## Create API Config
+template(".env.j2", "./bin/")
+## Create Cleanup script
 template("clean-data.sh.j2", "./src/")

makefile

@@ -37,10 +37,12 @@ db-stop:
 # Setup API
 api: api-start
 
+api-init:
+	cd src/api; go build -o ../../bin/engine_x_mgmt
 api-start:
-
+	cd bin; ./engine_x_mgmt 
 api-stop:
-
+	
 # Setup UI
 ui: ui-start
 

src/api/go.mod

@@ -0,0 +1,8 @@
+module api
+
+go 1.19
+
+require (
+	github.com/go-sql-driver/mysql v1.6.0
+	github.com/joho/godotenv v1.4.0
+)

src/api/go.sum

@@ -0,0 +1,4 @@
+github.com/go-sql-driver/mysql v1.6.0 h1:BCTh4TKNUYmOmMUcQ3IipzF5prigylS7XXjEkfCHuOE=
+github.com/go-sql-driver/mysql v1.6.0/go.mod h1:DCzpHaOWr8IXmIStZouvnhqoel9Qv2LBy8hT2VhHyBg=
+github.com/joho/godotenv v1.4.0 h1:3l4+N6zfMWnkbPEXKng2o2/MR5mSwTrBih4ZEkkz1lg=
+github.com/joho/godotenv v1.4.0/go.mod h1:f4LDr5Voq0i2e/R5DDNOoa2zzDfwtkZa6DnEwAbqwq4=

src/api/helper/10_ConnectDB.go

@@ -0,0 +1,18 @@
+package helper
+
+import (
+	"database/sql"
+	"fmt"
+
+	_ "github.com/go-sql-driver/mysql"
+)
+
+// docker run --name mysqldb -e MYSQL_ROOT_PASSWORD=rootpw -p 3307:3306 -d mysql:latest
+func ConnectDB() {
+	db_string := fmt.Sprintf("%s:%s@tcp(%s:%s)/%s", Db_User, Db_Pass, Db_Host, Db_Port, Db_Default_Db)
+	Db, err := sql.Open("mysql", db_string)
+	if err != nil {
+		LogErrorFatal(err)
+	}
+	defer Db.Close()
+}

src/api/helper/10_LoadEnv.go

@@ -0,0 +1,42 @@
+package helper
+
+import (
+	"log"
+	"os"
+
+	"github.com/joho/godotenv"
+)
+
+func Loadenv() {
+	GetConfigFile()
+	err := godotenv.Load()
+	LogErrorWarning(err)
+}
+
+func GetConfigFile() {
+	dotenv_exists := FileExists(".env")
+	if dotenv_exists {
+		godotenv.Load(".env")
+		LogInfo(".env file found, using prefered values")
+	} else {
+		LogInfo("No .env file found, using default values")
+	}
+	GetDefaults()
+}
+
+func Set_logfile() {
+	f, err := os.OpenFile(Log_file, os.O_RDWR|os.O_CREATE|os.O_APPEND, 0666)
+	if err != nil {
+		log.Fatalf("error opening file: %v", err)
+	}
+	defer f.Close()
+	log.SetOutput(f)
+}
+
+func FileExists(filename string) bool {
+	info, err := os.Stat(filename)
+	if os.IsNotExist(err) {
+		return false
+	}
+	return !info.IsDir()
+}

src/api/helper/11_QueryDB.go

@@ -0,0 +1,40 @@
+package helper
+
+import (
+	"database/sql"
+	"encoding/json"
+	"fmt"
+
+	_ "github.com/go-sql-driver/mysql"
+)
+
+func QueryString(queryStr string) []byte {
+	db_string := fmt.Sprintf("%s:%s@tcp(%s:%s)/%s", Db_User, Db_Pass, Db_Host, Db_Port, Db_Default_Db)
+	conn, err := sql.Open("mysql", db_string)
+	if err != nil {
+		LogErrorWarning(err)
+		return []byte("Error while connecting to database")
+	}
+	defer conn.Close()
+
+	qdata, err := conn.Query(queryStr)
+	LogErrorWarning(err)
+	defer qdata.Close()
+
+	kvp := make(map[string]string)
+
+	for qdata.Next() {
+		var key string
+		var value string
+
+		err = qdata.Scan(&key, &value)
+		LogErrorWarning(err)
+		kvp[key] = value
+	}
+
+	jsonData, err := json.Marshal(kvp)
+	if err != nil {
+		return []byte("Error while generating json")
+	}
+	return jsonData
+}

src/api/helper/20_CheckError.go

@@ -0,0 +1,21 @@
+package helper
+
+import "log"
+
+func LogErrorWarning(err error) {
+	if err != nil {
+		log.Printf("WARNING: %v \n", err)
+	}
+}
+
+func LogErrorFatal(err error) {
+	if err != nil {
+		log.Fatalf("ERROR: %v \n", err)
+	}
+}
+
+func LogInfo(info string) {
+	if info != "" {
+		log.Printf("INFO: %v \n", info)
+	}
+}

src/api/helper/20_GetDefaults.go

@@ -0,0 +1,72 @@
+package helper
+
+import "os"
+
+func GetDefaults() {
+	// Gin Variables
+	// Set IP
+	env_ip, present := os.LookupEnv("LISTEN_IP")
+	if present {
+		Ip = env_ip
+	} else {
+		Ip = default_ip
+	}
+	// Set Port
+	env_port, present := os.LookupEnv("LISTEN_PORT")
+	if present {
+		Http_port = env_port
+	} else {
+		Http_port = default_port
+	}
+	// Log Variables
+	// Set Logfile
+	env_log_file, present := os.LookupEnv("LOG_FILE")
+	if present {
+		Log_file = env_log_file
+	} else {
+		Log_file = default_log_file
+	}
+	// Set Gin log file
+	env_gin_log_file, present := os.LookupEnv("GIN_LOG_FILE")
+	if present {
+		Gin_log_file = env_gin_log_file
+	} else {
+		Gin_log_file = default_gin_log_file
+	}
+	// DB Variables
+	// Set DB User
+	env_db_user, present := os.LookupEnv("DB_USER")
+	if present {
+		Db_User = env_db_user
+	} else {
+		Db_User = default_DB_User
+	}
+	// Set DB Password
+	env_db_pass, present := os.LookupEnv("DB_PASSWORD")
+	if present {
+		Db_Pass = env_db_pass
+	} else {
+		Db_Pass = default_DB_Pass
+	}
+	// Set DB Port
+	env_db_port, present := os.LookupEnv("DB_PORT")
+	if present {
+		Db_Port = env_db_port
+	} else {
+		Db_Port = default_DB_Port
+	}
+	// Set DB Host
+	env_db_host, present := os.LookupEnv("DB_HOST")
+	if present {
+		Db_Host = env_db_host
+	} else {
+		Db_Host = default_DB_Host
+	}
+	// Set DB Default Database
+	env_db_default_db, present := os.LookupEnv("DB_DEFAULT_DATABASE")
+	if present {
+		Db_Default_Db = env_db_default_db
+	} else {
+		Db_Default_Db = default_DB_Default_db
+	}
+}

src/api/helper/90_vars.go

@@ -0,0 +1,5 @@
+package helper
+
+import "database/sql"
+
+var Db *sql.DB

src/api/helper/91_default_vars.go

@@ -0,0 +1,33 @@
+package helper
+
+// Default Vars
+// --- Default Gin Vars ---
+var default_port string = "8081"
+var default_ip string = "0.0.0.0"
+
+// --- Default Log Vars ---
+var default_log_file string = "/var/log/gonodeinfo.log"
+var default_gin_log_file string = "/var/log/gonodeinfo.gin.log"
+
+// --- Default DB Vars ---
+var default_DB_User string = "root"
+var default_DB_Pass string = "rootpw"
+var default_DB_Host string = "127.0.0.1"
+var default_DB_Port string = "3307"
+var default_DB_Default_db string = "sys"
+
+// Vars
+// --- Gin Vars ---
+var Http_port string
+var Ip string
+
+// --- Log Vars ---
+var Log_file string
+var Gin_log_file string
+
+// --- DB Vars ---
+var Db_User string
+var Db_Pass string
+var Db_Host string
+var Db_Port string
+var Db_Default_Db string

src/api/main.go

@@ -0,0 +1,9 @@
+package main
+
+import (
+	helper "api/helper"
+)
+
+func main() {
+	helper.Loadenv()
+}

src/api/test/main.go

@@ -0,0 +1,5 @@
+package main
+
+func main() {
+	Test()
+}

src/api/test/test.go

@@ -0,0 +1,7 @@
+package main
+
+import "fmt"
+
+func Test() {
+	fmt.Println("test")
+}

src/templates/.env.j2

@@ -0,0 +1,39 @@
+# Nginx API
+## Listen IP
+{%- if api.ip is defined %}
+NGINX_API_LISTEN_IP={{ api.ip }}
+{%- else %}
+NGINX_API_LISTEN_IP=localhost
+{%- endif %}
+## Listen Port
+{%- if api.port is defined %}
+NGINX_API_LISTEN_PORT={{ api.port }}
+{%- else %}
+NGINX_API_LISTEN_PORT=79
+{%- endif %}
+
+# Database
+## Database Host
+{%- if db.host is defined %}
+DB_HOST={{ db.host }}
+{%- else %}
+DB_HOST=localhost
+{%- endif %}
+## Database Port
+{%- if db.port is defined %}
+DB_PORT={{ db.port }}
+{%- else %}
+DB_PORT=3306
+{%- endif %}
+## Database User
+{%- if db.user is defined %}
+DB_USER={{ db.user }}
+{%- else %}
+DB_USER={{0/0}} # Throw error if not set / can be overwritten by envrionment variable
+{%- endif %}
+## Database Password
+{%- if db.user_pw is defined %}
+DB_USERPW={{ db.user_pw }}
+{%- else %}
+DB_USERPW={{0/0}} # Throw error if not set / can be overwritten by envrionment variable
+{%- endif %}

src/templates/clean-data.sh.j2

@@ -14,9 +14,12 @@ echo "Executing Clean tasks"
 rm -rf src/docker-compose.yml || CLEAN_ERROR_ID=1
 
 ## Clean DB-Data
-rm -rf {% if db.data_path_mysql is defined %}{{ data_path_mysql }}{% else %}./src/db/cache/mysql_data{% endif %} || CLEAN_ERROR_ID=3
+sudo rm -rf {% if db.data_path_mysql is defined %}{{ data_path_mysql }}{% else %}./src/db/cache/mysql_data{% endif %} || CLEAN_ERROR_ID=3
 rm -rf {% if db.data_path_mysql_backup is defined %}{{ data_path_mysql_backup }}{% else %}./src/db/cache/mysql_backup{% endif %} || CLEAN_ERROR_ID=4
 
+## Remove everything in binary directory
+rm -rf bin/* || CLEAN_ERROR_ID=5
+rm -rf bin/.env || CLEAN_ERROR_ID=6
 # Post Task
 ## Remove Clean script itself
 rm -rf src/clean-data.sh || CLEAN_ERROR_ID=2

src/templates/docker-compose.yml.j2

@@ -2,32 +2,30 @@
 version: '3.1'
 
 services:
-{% if db.enabled == true %}
+{%- if db.enabled == true %}
   ngx_mgmt_db:
     image: mariadb:latest
     restart: always
     environment:
-  {% if db.root_pw is defined %}
       MARIADB_ROOT_PASSWORD: {{ db.root_pw }}
-  {% endif %}
+      MARIADB_USER: {{ db.user }}
-      MARIADB_USER: {{ TMPL_DB_USER }}
+      MARIADB_PASSWORD: {{ db.user_pw }}
-      MARIADB_PASSWORD: {{ TMPL_DB_USER_PW }}
+      MARIADB_DATABASE: {{ db.db }}
-      MARIADB_DATABASE: {{ TMPL_DB_DB }}
     volumes:
-  {% if db.data_path_mysql is defined %}
+  {%- if db.data_path_mysql is defined %}
-    - {{ data_path_mysql }}:/var/lib/mysql
+    - {{ db.data_path_mysql }}:/var/lib/mysql
-  {% else %}
+  {%- else %}
-    - ./src/db/cache/mysql_data:/var/lib/mysql
+    - ./db/cache/mysql_data:/var/lib/mysql
-  {% endif %}
+  {%- endif %}
-  {% if db.data_path_mysql_backup is defined %}
+  {%- if db.data_path_mysql_backup is defined %}
-    - {{ data_path_mysql_backup }}:/var/lib/mysql
+    - {{ db.data_path_mysql_backup }}:/var/lib/mysql
-  {% else %}
+  {%- else %}
-    - ./src/db/cache/mysql_backup:/var/lib/mysql
+    - ./db/cache/mysql_backup:/var/lib/mysql
-  {% endif %}
+  {%- endif %}
     ports:
-  {% if db.port is defined %}
+  {%- if db.port is defined %}
-    - {{ port }}:3306
+    - {{ db.port }}:3306
-  {% else %}
+  {%- else %}
     - 3306:3306
-  {% endif %}
+  {%- endif %}
-{% endif %}
+{%- endif %}