mirror of
https://gitee.com/rainbond/Rainbond.git
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124 lines
3.4 KiB
Go
124 lines
3.4 KiB
Go
// RAINBOND, Application Management Platform
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// Copyright (C) 2014-2017 Goodrain Co., Ltd.
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version. For any non-GPL usage of Rainbond,
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// one or multiple Commercial Licenses authorized by Goodrain Co., Ltd.
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// must be obtained first.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package probe
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import (
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"context"
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"net"
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"net/http"
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"net/url"
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"strings"
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"time"
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"github.com/Sirupsen/logrus"
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"github.com/goodrain/rainbond/node/nodem/service"
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"github.com/goodrain/rainbond/util/prober/types/v1"
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)
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// HTTPProbe probes through the http protocol
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type HTTPProbe struct {
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Name string
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Address string
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ResultsChan chan *v1.HealthStatus
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Ctx context.Context
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Cancel context.CancelFunc
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TimeInterval int
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MaxErrorsNum int
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}
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//Check starts http probe.
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func (h *HTTPProbe) Check() {
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go h.HTTPCheck()
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}
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//Stop stops http probe.
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func (h *HTTPProbe) Stop() {
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h.Cancel()
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}
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//HTTPCheck http check
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func (h *HTTPProbe) HTTPCheck() {
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if h.TimeInterval == 0 {
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h.TimeInterval = 5
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}
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timer := time.NewTimer(time.Second * time.Duration(h.TimeInterval))
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defer timer.Stop()
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for {
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HealthMap := GetHTTPHealth(h.Address)
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result := &v1.HealthStatus{
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Name: h.Name,
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Status: HealthMap["status"],
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Info: HealthMap["info"],
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}
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h.ResultsChan <- result
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timer.Reset(time.Second * time.Duration(h.TimeInterval))
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select {
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case <-h.Ctx.Done():
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return
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case <-timer.C:
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}
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}
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}
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// Return true if the underlying error indicates a http.Client timeout.
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//
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// Use for errors returned from http.Client methods (Get, Post).
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func isClientTimeout(err error) bool {
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if uerr, ok := err.(*url.Error); ok {
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if nerr, ok := uerr.Err.(net.Error); ok && nerr.Timeout() {
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return true
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}
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}
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return false
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}
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//GetHTTPHealth get http health
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func GetHTTPHealth(address string) map[string]string {
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c := &http.Client{
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Timeout: 10 * time.Second,
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}
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if !strings.HasPrefix(address, "http") {
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address = "http://" + address
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}
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addr, err := url.Parse(address)
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if err != nil {
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logrus.Errorf("%s is invalid %s", address, err.Error())
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return map[string]string{"status": service.Stat_healthy, "info": "check url is invalid"}
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}
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if addr.Scheme == "" {
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addr.Scheme = "http"
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}
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resp, err := c.Get(addr.String())
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if err != nil {
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if isClientTimeout(err) {
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return map[string]string{"status": service.Stat_death, "info": "Request service timeout"}
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}
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logrus.Errorf("http probe request error %s", err.Error())
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return map[string]string{"status": service.Stat_unhealthy, "info": err.Error()}
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}
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if resp.Body != nil {
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defer resp.Body.Close()
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}
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if resp.StatusCode >= 500 {
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logrus.Debugf("http probe check address %s return code %d", address, resp.StatusCode)
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return map[string]string{"status": service.Stat_unhealthy, "info": "Service unhealthy"}
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}
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return map[string]string{"status": service.Stat_healthy, "info": "service health"}
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}
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