Why Go
- Case Studies
  
  Common problems companies solve with Go
- Use Cases
  
  Stories about how and why companies use Go
- Security
  
  How Go can help keep you secure by default
Learn
Docs
- Effective Go
  
  Tips for writing clear, performant, and idiomatic Go code
- Go User Manual
  
  A complete introduction to building software with Go
- Standard library
  
  Reference documentation for Go's standard library
- Release Notes
  
  Learn what's new in each Go release
Packages
Community
- Recorded Talks
  
  Videos from prior events
- Meetups
  
  Meet other local Go developers
- Conferences
  
  Learn and network with Go developers from around the world
- Go blog
  
  The Go project's official blog.
- Go project
  
  Get help and stay informed from Go
- Get connected

handler

package module

Go to main page

Versions in this module

v1

v1.0.5

Dec 15, 2025

Changes in this version

+ func GetEnv(key string) string

+ func IsErrorRetryable(err error) bool

+ func MustGetEnvBool(key string) bool

+ func MustGetEnvFloat(key string) float64

+ func MustGetEnvMap(envVar string) map[string]string

+ type BasicHandler func(ctx context.Context, event T) (U, error)

+ type Builder struct

+ func Build[T interface{}, U interface{}](getHandler func(awsConfig aws.Config) Handler[T, U]) *Builder[T, U]

+ func (b *Builder[T, U]) Start()

+ func (b *Builder[T, U]) WithLogWriter(getWriter func(aws.Config) *io.Writer) *Builder[T, U]

+ type Context struct

+ func Get(ctx context.Context) *Context

+ func GetJSONTestLogger(ctx context.Context) (*Context, func())

+ func GetWithSlogLogger(ctx context.Context, slogger *slog.Logger) *Context

+ func GetWithSuppressedLogging(ctx context.Context) *Context

+ func (h *Context) GetLogger() *Logger

+ func (h *Context) Metric(metricName string) *MetricBuilder

+ func (h *Context) Split(ctx context.Context) (*Context, func())

+ type Logger struct

+ func (s *Logger) AddParam(key any, value any) *Logger

+ func (s *Logger) AddStage(description string) *Logger

+ func (s *Logger) AddStageIfNoError(description string, err error) error

+ func (s *Logger) Debug(msg string, args ...any)

+ func (s *Logger) DisableCombinedMode()

+ func (s *Logger) Error(msg string, args ...any)

+ func (s *Logger) Errorf(format string, args ...any)

+ func (s *Logger) Info(msg string, args ...any)

+ func (s *Logger) Infof(format string, args ...any)

+ func (s *Logger) Log()

+ func (s *Logger) Warn(msg string, args ...any)

+ func (s *Logger) With(args ...any) *Logger

+ func (s *Logger) WithLineParams(args ...any) *Logger

+ type LoggerParams struct

+ func NewLoggerParams() *LoggerParams

+ func (lp *LoggerParams) Add(key string, value any)

+ type MetricBuilder struct

+ func (m *MetricBuilder) Dimension(key string, value any) *MetricBuilder

+ func (m *MetricBuilder) Unit(value string) *MetricBuilder

+ func (m *MetricBuilder) Value(value any)

+ type RetryableError interface

+ IsRetryable func() bool

+ type SQSHandlerStruct interface

+ ProcessSQSEvent func(ctx *Context, genericType T, attributes map[string]events.SQSMessageAttribute) error

v1.0.4

Sep 27, 2025

Changes in this version

+ func IsLambda() bool

v1.0.3

Jun 7, 2024

v1.0.2

Apr 1, 2024

v1.0.1

Dec 22, 2023

Changes in this version

+ func BuildAndStartCustomResource(getHandler func(awsConfig aws.Config) cfn.CustomResourceFunction)

+ func BuildAndStart[T interface{}, U interface{}](getHandler func(awsConfig aws.Config) Handler[T, U])

+ func ContextWithLogger(ctx context.Context) context.Context

+ func GetLogger(ctx context.Context) *slog.Logger

+ func GetNewContextWithLogger(parent context.Context, logger *slog.Logger) context.Context

+ func MustGetEnv(key string) string

+ func MustGetEnvInt(key string) int

+ func SQSAllFail(event events.SQSEvent) events.SQSEventResponse

+ type Handler func(ctx context.Context, event T) (U, error)

+ func GetSQSHandler(processRecord SQSRecordProcessor) Handler[events.SQSEvent, events.SQSEventResponse]

+ func WithLogger[T interface{}, U interface{}](handlerFunc Handler[T, U]) Handler[T, U]

+ type SQSHandler = Handler[events.SQSEvent, events.SQSEventResponse]

+ type SQSRecordProcessor func(ctx context.Context, record events.SQSMessage) error

v1.0.0

Dec 22, 2023

v0

v0.0.2

Dec 22, 2023