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server.go
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server.go
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package gorush
import (
"fmt"
"net/http"
"github.com/gin-gonic/gin"
"github.com/prometheus/client_golang/prometheus"
"github.com/prometheus/client_golang/prometheus/promhttp"
api "gopkg.in/appleboy/gin-status-api.v1"
)
func init() {
// Support metrics
m := NewMetrics()
prometheus.MustRegister(m)
}
func abortWithError(c *gin.Context, code int, message string) {
c.JSON(code, gin.H{
"code": code,
"message": message,
})
c.Abort()
}
func rootHandler(c *gin.Context) {
c.JSON(http.StatusOK, gin.H{
"text": "Welcome to notification server.",
})
}
func pushHandler(c *gin.Context) {
var form RequestPush
var msg string
if err := c.BindJSON(&form); err != nil {
msg = "Missing notifications field."
LogAccess.Debug(msg)
abortWithError(c, http.StatusBadRequest, msg)
return
}
if len(form.Notifications) == 0 {
msg = "Notifications field is empty."
LogAccess.Debug(msg)
abortWithError(c, http.StatusBadRequest, msg)
return
}
if int64(len(form.Notifications)) > PushConf.Core.MaxNotification {
msg = fmt.Sprintf("Number of notifications(%d) over limit(%d)", len(form.Notifications), PushConf.Core.MaxNotification)
LogAccess.Debug(msg)
abortWithError(c, http.StatusBadRequest, msg)
return
}
// queue notification.
go queueNotification(form)
c.JSON(http.StatusOK, gin.H{
"success": "ok",
})
}
func configHandler(c *gin.Context) {
c.YAML(http.StatusCreated, PushConf)
}
func metricsHandler(c *gin.Context) {
promhttp.Handler().ServeHTTP(c.Writer, c.Request)
}
func routerEngine() *gin.Engine {
// set server mode
gin.SetMode(PushConf.Core.Mode)
r := gin.New()
// Global middleware
r.Use(gin.Logger())
r.Use(gin.Recovery())
r.Use(VersionMiddleware())
r.Use(LogMiddleware())
r.Use(StatMiddleware())
r.GET(PushConf.API.StatGoURI, api.StatusHandler)
r.GET(PushConf.API.StatAppURI, appStatusHandler)
r.GET(PushConf.API.ConfigURI, configHandler)
r.GET(PushConf.API.SysStatURI, sysStatsHandler)
r.POST(PushConf.API.PushURI, pushHandler)
r.GET(PushConf.API.MetricURI, metricsHandler)
r.GET("/", rootHandler)
return r
}