openethereum-node-status/internal/server/router.go

package server

import (
	"net/http"

	"github.com/gin-gonic/gin"
)

func Start(port string, ginMode string) error {
	gin.SetMode(ginMode)
	gin.DisableConsoleColor()

	router := gin.Default()

	router.GET("/metrics", metricsHandler)
	router.GET("/health", healthHandler)

	return router.Run(port)
}

func healthHandler(c *gin.Context) {
	allOk, data := batchHealthCall()

	if !allOk {
		// choose a better status code if available
		c.JSON(http.StatusExpectationFailed, gin.H{
			"message": "could not get node health status",
		})
		return
	}

	c.JSON(http.StatusOK, gin.H{
		"syncComplete": data.SyncComplete,
		"chainName":    data.ChainName,
	})
}

func metricsHandler(c *gin.Context) {
	allOk, data := batchMetricsCall()

	if !allOk {
		// choose a better status code if available
		c.JSON(http.StatusExpectationFailed, gin.H{
			"message": "could not get node metrics",
		})
		return
	}

	c.JSON(http.StatusOK, gin.H{
		"gasPrice":    data.GasPrice,
		"blockNumber": data.BlockNumber,
	})
}