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Merge pull request #910 from ywc689/udpping_checker
healthcheck: more checker methods and bugfix
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,182 @@ | ||
| // Copyright 2023 IQiYi Inc. All Rights Reserved. | ||
| // | ||
| // Licensed 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. | ||
| // | ||
| // The healthcheck package refers to the framework of "github.com/google/ | ||
| // seesaw/healthcheck" heavily, with only some adaption changes for DPVS. | ||
|
|
||
| package hc | ||
|
|
||
| import ( | ||
| "crypto/tls" | ||
| "errors" | ||
| "fmt" | ||
| "io" | ||
| "net/http" | ||
| "net/url" | ||
| "strings" | ||
| "time" | ||
| ) | ||
|
|
||
| var _ CheckMethod = (*HttpChecker)(nil) | ||
|
|
||
| type HttpCodeRange struct { | ||
| start int // inclusive | ||
| end int // inclusive | ||
| } | ||
|
|
||
| // HttpChecker contains configuration specific to a HTTP(S) healthcheck. | ||
| type HttpChecker struct { | ||
| Config *CheckerConfig | ||
|
|
||
| Method string | ||
| Host string | ||
| Uri string | ||
| ResponseCodes []HttpCodeRange | ||
| Response string | ||
|
|
||
| Secure bool | ||
| TLSVerify bool | ||
| Proxy bool | ||
| } | ||
|
|
||
| // NewHttpChecker returns an initialised HttpChecker. | ||
| func NewHttpChecker(method, host, uri string) *HttpChecker { | ||
| if len(method) == 0 { | ||
| method = "GET" | ||
| } | ||
| if len(uri) == 0 { | ||
| uri = "/" | ||
| } | ||
| return &HttpChecker{ | ||
| Method: method, | ||
| Uri: uri, | ||
| ResponseCodes: []HttpCodeRange{{200, 299}, {300, 399}, {400, 499}}, | ||
| Response: "", | ||
| Secure: false, | ||
| TLSVerify: true, | ||
| Proxy: false, | ||
| } | ||
| } | ||
|
|
||
| func (hc *HttpChecker) BindConfig(conf *CheckerConfig) { | ||
| hc.Config = conf | ||
| if len(hc.Host) == 0 { | ||
| hc.Host = conf.Target.Addr() | ||
| } | ||
| } | ||
|
|
||
| // String returns the string representation of a HTTP healthcheck. | ||
| func (hc *HttpChecker) String() string { | ||
| attr := []string{hc.Method, hc.Host, hc.Uri} | ||
| if hc.Secure { | ||
| attr = append(attr, "secure") | ||
| if hc.TLSVerify { | ||
| attr = append(attr, "tls-verify") | ||
| } | ||
| } | ||
| if hc.Proxy { | ||
| attr = append(attr, "proxy") | ||
| } | ||
|
|
||
| return fmt.Sprintf("HTTP checker for %v [%s]", hc.Config.Id, strings.Join(attr, ", ")) | ||
| } | ||
|
|
||
| // Check executes a HTTP healthcheck. | ||
| func (hc *HttpChecker) Check(target Target, timeout time.Duration) *Result { | ||
| var msg string | ||
| if hc.Secure { | ||
| msg = fmt.Sprintf("HTTPS %s to %s", hc.Method, hc.Host) | ||
| } else { | ||
| msg = fmt.Sprintf("HTTP %s to %s", hc.Method, hc.Host) | ||
| } | ||
|
|
||
| start := time.Now() | ||
| if timeout == time.Duration(0) { | ||
| timeout = DefaultCheckConfig.Timeout | ||
| } | ||
|
|
||
| u, err := url.Parse(hc.Uri) | ||
| if err != nil { | ||
| return NewResult(start, fmt.Sprintf("%s; url parse failed", msg), false, err) | ||
| } | ||
| if hc.Secure { | ||
| u.Scheme = "https" | ||
| } else { | ||
| u.Scheme = "http" | ||
| } | ||
| if len(u.Host) == 0 { | ||
| u.Host = hc.Host | ||
| } | ||
|
|
||
| proxy := (func(*http.Request) (*url.URL, error))(nil) | ||
| if hc.Proxy { | ||
| proxy = http.ProxyURL(u) | ||
| } | ||
|
|
||
| tlsConfig := &tls.Config{ | ||
| InsecureSkipVerify: !hc.TLSVerify, | ||
| } | ||
| client := &http.Client{ | ||
| Transport: &http.Transport{ | ||
| Proxy: proxy, | ||
| TLSClientConfig: tlsConfig, | ||
| }, | ||
| Timeout: timeout, | ||
| CheckRedirect: func(req *http.Request, via []*http.Request) error { | ||
| return errors.New("redirect not permitted") | ||
| }, | ||
| } | ||
|
|
||
| req, err := http.NewRequest(hc.Method, hc.Uri, nil) | ||
| req.URL = u | ||
|
|
||
| // If we received a response we want to process it, even in the | ||
| // presence of an error - a redirect 3xx will result in both the | ||
| // response and an error being returned. | ||
| resp, err := client.Do(req) | ||
| if resp == nil { | ||
| return NewResult(start, fmt.Sprintf("%s; got no response", msg), false, err) | ||
| } | ||
| if resp.Body != nil { | ||
| defer resp.Body.Close() | ||
| } | ||
|
|
||
| // Check response code. | ||
| codeOk := false | ||
| for _, cr := range hc.ResponseCodes { | ||
| if resp.StatusCode >= cr.start && resp.StatusCode <= cr.end { | ||
| codeOk = true | ||
| break | ||
| } | ||
| } | ||
|
|
||
| // Check response body. | ||
| bodyOk := false | ||
| msg = fmt.Sprintf("%s; got %s", msg, resp.Status) | ||
| if len(hc.Response) == 0 { | ||
| bodyOk = true | ||
| } else if resp.Body != nil { | ||
| buf := make([]byte, len(hc.Response)) | ||
| n, err := io.ReadFull(resp.Body, buf) | ||
| if err != nil && err != io.ErrUnexpectedEOF { | ||
| msg = fmt.Sprintf("%s; failed to read HTTP response", msg) | ||
| } else if string(buf) != hc.Response { | ||
| msg = fmt.Sprintf("%s; unexpected response - %q", msg, string(buf[0:n])) | ||
| } else { | ||
| bodyOk = true | ||
| } | ||
| } | ||
|
|
||
| return NewResult(start, msg, codeOk && bodyOk, nil) | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,78 @@ | ||
| // Copyright 2023 IQiYi Inc. All Rights Reserved. | ||
| // | ||
| // Licensed 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. | ||
| // | ||
| // The healthcheck package refers to the framework of "github.com/google/ | ||
| // seesaw/healthcheck" heavily, with only some adaption changes for DPVS. | ||
|
|
||
| package hc | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "net" | ||
| "strings" | ||
| "testing" | ||
| "time" | ||
|
|
||
| "github.com/iqiyi/dpvs/tools/healthcheck/pkg/utils" | ||
| ) | ||
|
|
||
| var http_targets = []Target{ | ||
| {net.ParseIP("192.168.88.30"), 80, utils.IPProtoTCP}, | ||
| {net.ParseIP("192.168.88.30"), 443, utils.IPProtoTCP}, | ||
| {net.ParseIP("2001::30"), 80, utils.IPProtoTCP}, | ||
| {net.ParseIP("2001::30"), 443, utils.IPProtoTCP}, | ||
| } | ||
|
|
||
| var http_url_targets = []string{ | ||
| "http://www.baidu.com", | ||
| "https://www.baidu.com", | ||
| "http://www.iqiyi.com", | ||
| "https://www.iqiyi.com", | ||
| } | ||
|
|
||
| func TestHttpChecker(t *testing.T) { | ||
| for _, target := range http_targets { | ||
| checker := NewHttpChecker("", "", "") | ||
| checker.Host = target.Addr() | ||
| /* | ||
| if target.Port == 443 { | ||
| checker.Secure = true | ||
| } | ||
| */ | ||
| id := Id(target.String()) | ||
| config := NewCheckerConfig(&id, checker, &target, StateUnknown, | ||
| 0, 3*time.Second, 2*time.Second, 3) | ||
| result := checker.Check(target, config.Timeout) | ||
| fmt.Printf("[ HTTP ] %s ==> %v\n", target, result) | ||
| } | ||
|
|
||
| for _, target := range http_url_targets { | ||
| host := target[strings.Index(target, "://")+3:] | ||
| checker := NewHttpChecker("GET", target, "") | ||
| checker.Host = host | ||
| checker.ResponseCodes = []HttpCodeRange{{200, 200}} | ||
| if strings.HasPrefix(target, "https") { | ||
| checker.Secure = true | ||
| } | ||
| id := Id(host) | ||
| config := NewCheckerConfig(&id, checker, &Target{}, StateUnknown, | ||
| 0, 3*time.Second, 2*time.Second, 3) | ||
| result := checker.Check(Target{}, config.Timeout) | ||
| if result.Success == false { | ||
| t.Errorf("[ HTTP ] %s ==> %v\n", target, result) | ||
| } else { | ||
| fmt.Printf("[ HTTP ] %s ==> %v\n", target, result) | ||
| } | ||
| } | ||
| } |
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