Reusable packages and frameworks for Go services
go get github.com/delivery-much/dm-goImplemented packages in project, their use and some examples.
Package for log application, ready for production (JSON) and development. Construct the log with some parameters: if is json, the level and some base fields that will appear in all output logs. Using the Sugar zap package.
Level: debug, info (default), warn, error, fatal
Example:
config := logger.Configuration{
IsJSON: true,
Level: "info",
BaseFields: logger.BaseFields{
ServiceName: "default-service",
CodeVersion: "1.0.0",
Env: "production",
},
}
err := logger.NewLogger(config)
if err != nil {
panic(err)
}
logger.Infow("failed to fetch URL",
// Key and value after the message
"url", "www.google.com",
"attempt", 3,
"backoff", time.Second,
)Package with some middleware for routes and service.
Example:
// Middleware for generate or inject request id in context of request.
router.Use(
middleware.RequestID("Key-Request-Id"),
)Package with some helpers/middleware for send events to New Relic.
Example:
InitNewRelic("app-teste", "1234")
// Func for database monitoring
newRelicSegment := StartNewRelicDBSegment(ctx.Background(), "select", "user")
defer newRelicSegment()
// Middleware for instruments handler functions using transactions and monitoring the route
router.Post(newrelic.WrapHandleFunc("/test", h.handleTest()))Package with some helpers for render responses. To respond in JSON format.
Package with some utility functions for string transformation
- MaskString masks the last half of a given string, changing any letter or number character to '*' Example:
MaskString("examplestring") // returns "exampl*******"
MaskString("") // returns ""- MaskEmail masks an email string, leaving only the first four letters of the email id (i.e the part before the '@') and the email domain unmasked. if the email id has 4 or less characters, leaves only 1 character unmasked. Example:
MaskEmail("[email protected]") // returns "emai*_**@domain.com"
MaskEmail("[email protected]") // returns "0***@domain.com"
MaskEmail("notanemail.com") // returns "notanemail.com"
MaskEmail("") //returns ""