GoLang Workshops

Course objectives

The aim of the Golang language workshop is to enhance participants’ skills in the practical use of the language’s built-in mechanisms and selected packages and tools. Participants will acquire relevant knowledge and perform practical exercises in: multithreading and error handling, application configuration, testing, database handling, implementation of services in the RESTful model and the use of tools for building and analysing applications.

Trainings scope

Basic Concepts

• Code architecture
  • Structures, interfaces and methods,
  • Embedding and method promotion

•  Concurrency
  • Goroutine lifecycle control and data propagation: contexts and wait groups
  • Shared data synchronization: Mutex, RWMutex
  • Inter-process communication: channels and select

• Time based events: timers and tickers
• Error handling
  • Custom error hierarchies,
  • Checking error type,
  • Unexpected errors: panic and recover

• Structural logging using slog
• Embedded resources
• Application configuration using koanf package

Testing

• Table and map driven tests
• Concurrent test execution,
• Data assertions: deep equal and golden files
• Test Doubles
  • Mocks vs Stubs vs Fakes
  • Higher-order function replacement
  • Monkey patching

• HTTP testing
  • Request emulation
  • Client tests

• Benchmarking
• Fuzz testing

Databases

• Object-relational mappings: gorm or ent package
• Model/query code generation from SQL:  sqlc package
• Schema and migration management: atlas package

RESTful Services

• Handling HTTP Requests
  • Routing: paths and handlers
  • Request parameter extraction
  • Serving files and embedded resources,
  • Request contexts and middlewares

• Security
  • TLS Server
  • JSON Web Token Access Control

• OpenAPI code generation
• Serving Swagger UI

Tools

• Project building support: mage
• Static code analysis using golangci-lint
• Profiling

Benefits

Workshop participants will learn to:

• Create correct code in the Golang language using custom extended types, concurrency mechanisms, error handling system and timed events.
•  Test code using a set of tools offered by the Go language like unit testing, benchmarking and fuzzing
•  Implement effective RESTful services and use tools to analyze their performance
•  Use relational databases in their Golang applications

Audience

Programmers at an intermediate or higher level, with experience in other programming languages, familiar with the basic syntax of the Golang language.