Connect to db (not working yet)

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

@@ -40,7 +40,7 @@ api: api-start
 api-init:
 	cd src/api; go build -o ../../bin/engine_x_mgmt
 api-start:
-	./bin/engine_x_mgmt &
+	cd bin; ./engine_x_mgmt 
 api-stop:
 	
 # Setup UI

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/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 %}