Documentation
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Index ¶
Constants ¶
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Variables ¶
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Functions ¶
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Types ¶
type Context ¶
type Context struct {
Context context.Context
EventRecord events.DynamoDBEventRecord
}
func (*Context) BindNewImage ¶
func (*Context) BindOldImage ¶
type HandlerFunc ¶
func (HandlerFunc) Middleware ¶
func (hf HandlerFunc) Middleware(middleware ...Middleware) HandlerFunc
Apply middleware to the handler func.
Middleware is called in the order it is given to this function.
func (HandlerFunc) Start ¶
func (hf HandlerFunc) Start()
func (HandlerFunc) ToLambdaHandler ¶
func (hf HandlerFunc) ToLambdaHandler() func(ctx context.Context, event events.DynamoDBEvent) error
Get the AWS Lambda handler of the handler func.
Useful if you need to call AWS lambda.Start(...) directly, not required in most cases.
type Middleware ¶
type Middleware func(h HandlerFunc) HandlerFunc
func CorrelationIDMiddleware ¶
func CorrelationIDMiddleware() Middleware
Middleware to attach a correlation ID to the event, useful for tracing requests through distributed systems if it is passed along in further requests. You can also access the correlation ID directly in your handlers and middlewares by calling log.CorrelationIDFromContext(c.Context).
If used with the LoggerMiddleware, Correlation IDs are logged in each message. To ensure logs have correlation ID field, this middleware should be called first.
func LoggerMiddleware ¶
func LoggerMiddleware(w io.Writer, fields map[string]string) Middleware
Middleware to configure a logger in the context.Context.
The middleware logs on each event handled, and on errors. In addition to the default log messages, you can access the logger in your handlers/middleware by calling log.LoggerFromContext(c.Context). The logger we use is github.com/rs/zerolog
w io.Writer is the log output, for example os.Stdout field map[string]string is a list of key value fields to include in each log message
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