Implement REST API to provide settings to the frontend, as defined in…

… openapi spec and unmarshalled from the config file

api/README.md

@@ -0,0 +1,14 @@
+# logstation API
+
+The logstation API provides access to restful actions for the logstation UI. All the logs go over the websocket, but certain things like the syntax colors are queried via REST, which this API provides. 
+
+## Building
+The REST API is codegen'd on the server and client side through [OpenAPITools/openapi-generator](https://github.com/OpenAPITools/openapi-generator). 
+
+### Generate API Server
+Install the openapi-generator and run the following in the `logstation` root folder:
+```
+java -jar .\openapi-generator-cli.jar generate -i .\api\logstation-rest-api.yaml -g go-echo-server -o api\server --additional-properties hideGenerationTimestamp=true
+```  
+This will create a `logstation/api/server` folder which gets imported into `main.go`.  
+> Note: You may need to remove the `go.mod` after codegen so go doesn't treat `api/server` as it's own go module 

api/server/handlers/api_settings.go

@@ -0,0 +1,22 @@
+package handlers
+
+import (
+	"github.com/jdrews/logstation/api/server/models"
+	"github.com/labstack/echo/v4"
+	"github.com/spf13/viper"
+	"net/http"
+)
+
+// GetLogstationName - Get Logstation Name
+func (c *Container) GetLogstationName(ctx echo.Context) error {
+	return ctx.JSON(http.StatusOK, models.LogstationName{
+		Name: viper.GetString("logStationName"),
+	})
+}
+
+// GetSettingsSyntax - Get Syntax Colors
+func (c *Container) GetSettingsSyntax(ctx echo.Context) error {
+	var syntaxColors models.SyntaxColors
+	viper.UnmarshalKey("syntaxColors", &syntaxColors)
+	return ctx.JSON(http.StatusOK, syntaxColors)
+}

api/server/handlers/container.go

@@ -0,0 +1,11 @@
+package handlers
+
+// Container will hold all dependencies for your application.
+type Container struct {
+}
+
+// NewContainer returns an empty or an initialized container for your handlers.
+func NewContainer() (Container, error) {
+    c := Container{}
+    return c, nil
+}

api/server/models/model_logstation_name.go

@@ -0,0 +1,8 @@
+package models
+
+// LogstationName - 
+type LogstationName struct {
+
+	// Name of the logstation server
+	Name string `json:"name"`
+}

api/server/models/model_syntax_color.go

@@ -0,0 +1,11 @@
+package models
+
+// SyntaxColor - A syntax color and regex string for highlighting text
+type SyntaxColor struct {
+	Color string `json:"color,omitempty"`
+
+	Regex string `json:"regex,omitempty"`
+}
+
+// SyntaxColors - An array/slice of syntax colors
+type SyntaxColors []SyntaxColor

main.go

@@ -8,6 +8,7 @@ import (
 	"github.com/fstab/grok_exporter/tailer/fswatcher"
 	"github.com/fstab/grok_exporter/tailer/glob"
 	"github.com/gorilla/websocket"
+	"github.com/jdrews/logstation/api/server/handlers"
 	"github.com/labstack/echo/v4"
 	"github.com/labstack/echo/v4/middleware"
 	"github.com/sirupsen/logrus"
@@ -40,6 +41,14 @@ func main() {
 
 	e.Use(middleware.Logger())
 
+	c, _ := handlers.NewContainer()
+
+	// GetLogstationName - Get Logstation Name
+	e.GET("/settings/logstation-name", c.GetLogstationName)
+
+	// GetSettingsSyntax - Get Syntax Colors
+	e.GET("/settings/syntax", c.GetSettingsSyntax)
+
 	fsys, err := fs.Sub(embeddedFiles, "web/build")
 	if err != nil {
 		panic(err)
@@ -84,7 +93,6 @@ func handleConfigFile() {
 		}
 	}
 	logger.Info("Loaded ", viper.ConfigFileUsed())
-	logger.Info(viper.AllKeys()) // TODO: Use all the configs to set parameters in logstation
 }
 
 func wshandler(c echo.Context, pubSub *pubsub.PubSub) error {