dm-go

README

dm-go

Reusable packages and frameworks for Go services

Installation

go get github.com/delivery-much/dm-go

Packages

Implemented packages in project, their use and some examples.

Logger

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,
)

Middleware

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"),
)

New Relic

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()))

Render

Package with some helpers for render responses. To respond in JSON format.