dsserver

This is a Go boilerplate project using the Echo web framework with pre-configured middlewares, custom error handling, custom logging and commonly used utils for creating an API service in DS Platform.

Features

• Echo web framework: Fast and minimalist web framework for Go.
• Pre-configured middlewares:
  • Auth middleware: JWT authentication middleware.
  • Context middleware: Custom context middleware for handling request context.
  • Usage middleware: Custom middleware for logging request and response.
  • Audit middleware: Custom middleware for logging audit logs.
  • Entitlement middleware: Custom middleware for checking entitlements.
• Custom error handling:
  • UnauthorizedError: Custom error for unauthorized access.
  • MissingTenantError: Custom error for missing tenant.
  • ValidationError: Custom error for validation errors.
  • ServerError: Custom error for server errors.
  • EntitlementError: Custom error for entitlement errors.
  • NotFoundError: Custom error for not found errors.
• Custom logging: customized zerolog logging.
• Commonly used utils:
  • AWS dynamodb client: Custom dynamodb client for interacting with dynamodb.
  • AWS parameter store client: Custom parameter store client for interacting with parameter store.
  • AWS sqs client: Custom sqs client for interacting with sqs.
  • Cache Manager: Custom cache manager using bigcache package.

Project Structure

Copy code
.
├── config/             # Configuration files (environment variables, etc.)
├── errors/             # Custom error handling (error response formatting)
├── middlewares/        # Predefined middleware functions
├── models/             # Data models and schemas
├── routes/             # Routing logic for Echo
├── server/             # Echo server with predefined health check routes
├── utils/              # Utility functions (AWS, etc.)
│   ├── aws/            # AWS-specific utilities (e.g., SQS, S3)
│   ├── cache_manager/  # Cache specific utilities (e.g., SQS, S3)
│   └── log/            # Custom logger setup (zerolog)
├── go.mod              # Go module dependencies
└── main.go             # Application entry point

Usage

1. Given that you have a Go project, you could get this package by running the following command:

   go get github.com/grasp-labs/dsserver
   

2. Install dependencies:

   go mod tidy
   

3. Create your own main.go file and import the package:

   package main
   
   import (
       "github.com/grasp-labs/dsserver"
       "github.com/grasp-labs/ds-boilerplate-api-go/utils/log"
       "github.com/creasty/defaults"
   )
   
   func main() {
       cfg := config.Config{
   	    AppRootPath: "/app",
   	    Port:        ":8081",
       }
       log.InitLogger()
       logger := log.GetLogger()
   
       err := defaults.Set(&cfg) // Set default values
       logger.Info().Msgf("Config: %+v", cfg)
       if err != nil {
   	    return
       }
       if err := srv.Start(cfg.Port); !errors.Is(err, http.ErrServerClosed) {
           logger.Fatal().Err(err).Msg("Server stopped")
       }	    
   }
   

Then you get a basic server running on port 8081 with predefined health check routes.

4. Add your own routes.

import "github.com/grasp-labs/ds-boilerplate-api-go/models"

type SampleController struct {
	*models.DefaultController
}

func NewSampleController() models.Controller {
	return &SampleController{}
}

func (c *SampleController) GetRoutes() models.Routes {
	routes := models.Routes{
		models.Route{
			Path:                      "/test",
			Method:                    "GET",
			AllowUnauthenticatedUsers: false,
			HandlerFunc: func(c echo.Context) error {
				return c.JSON(http.StatusOK, "ok")
			},
			RequiredPermissions: []string{"service.log.admin"},
		},
	}
	return routes
}

Then you can add the controller to the server.

    // in main.go
	sampleController := NewSampleController()
	server.RegisterRoutes(&cfg, server.Protected, sampleController)

5. Run the server

go run main.go