| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package health |
| |
| import ( |
| "context" |
| "errors" |
| "github.com/apache/servicecomb-mesher/proxy/config" |
| "github.com/go-chassis/foundation/httpclient" |
| "github.com/go-chassis/openlog" |
| "io/ioutil" |
| "regexp" |
| "strconv" |
| ) |
| |
| //HTTPCheck checks http service |
| func HTTPCheck(check *config.HealthCheck, address string) error { |
| c, err := httpclient.New(&httpclient.DefaultOptions) |
| if err != nil { |
| openlog.Error("can not get http client: " + err.Error()) |
| //must not return error, because it is mesher error |
| return nil |
| } |
| var url = "http://" + address |
| if check.URI != "" { |
| url = url + check.URI |
| } |
| resp, err := c.Get(context.Background(), url, nil) |
| if err != nil { |
| openlog.Error("server can not be connected: " + err.Error()) |
| return err |
| } |
| body, err := ioutil.ReadAll(resp.Body) |
| if err != nil { |
| return err |
| } |
| defer resp.Body.Close() |
| if check.Match != nil { |
| if check.Match.Status != "" { |
| n, _ := strconv.Atoi(check.Match.Status) |
| if resp.StatusCode != n { |
| return errors.New("status is not " + check.Match.Status) |
| } |
| } |
| if check.Match.Body != "" { |
| re := regexp.MustCompile(check.Match.Body) |
| if !re.Match(body) { |
| return errors.New("body does not match " + check.Match.Body) |
| } |
| } |
| } else { |
| if resp.StatusCode == 200 { |
| return nil |
| } |
| } |
| return nil |
| } |