feat: add echo example

Author: 54m

example/echo/main.go

@@ -0,0 +1,48 @@
+package main
+
+import (
+	"fmt"
+	"net/http"
+	"os"
+
+	"github.com/gcp-kit/stalog"
+	"github.com/labstack/echo/v4"
+)
+
+func main() {
+	e := echo.New()
+
+	// Set request handler
+	e.GET("/", func(c echo.Context) error {
+		// Get request context logger
+		logger := stalog.RequestContextLogger(c.Request())
+
+		// These logs are grouped with the request log
+		logger.Debugf("Hi")
+		logger.Infof("Hello")
+		logger.Warnf("World")
+
+		return c.String(http.StatusOK, "OK")
+	})
+
+	projectId := "my-gcp-project"
+
+	// Make config for this library
+	config := stalog.NewConfig(projectId)
+	config.RequestLogOut = os.Stderr               // request log to stderr
+	config.ContextLogOut = os.Stdout               // context log to stdout
+	config.Severity = stalog.SeverityInfo          // only over INFO logs are logged
+	config.AdditionalData = stalog.AdditionalData{ // set additional fields for all logs
+		"service": "foo",
+		"version": 1.0,
+	}
+
+	// Set middleware for the request log to be automatically logged
+	e.Use(stalog.RequestLoggingWithEcho(config))
+
+	// Run server
+	fmt.Println("Waiting requests on port 8080...")
+	if err := e.Start(":8080"); err != nil {
+		panic(err)
+	}
+}