78ce5da988
A lot of packages use StringSet, but they don't use anything else from the util package. Moving StringSet into another package will shrink their dependency trees significantly.
136 lines
3.8 KiB
Go
136 lines
3.8 KiB
Go
/*
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Copyright 2014 The Kubernetes Authors All rights reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package unversioned
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import (
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"fmt"
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"net/http"
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"time"
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"github.com/golang/glog"
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"k8s.io/kubernetes/pkg/util/sets"
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)
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// RequestInfo keeps track of information about a request/response combination
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type RequestInfo struct {
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RequestHeaders http.Header
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RequestVerb string
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RequestURL string
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ResponseStatus string
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ResponseHeaders http.Header
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ResponseErr error
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Duration time.Duration
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}
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// NewRequestInfo creates a new RequestInfo based on an http request
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func NewRequestInfo(req *http.Request) *RequestInfo {
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reqInfo := &RequestInfo{}
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reqInfo.RequestURL = req.URL.String()
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reqInfo.RequestVerb = req.Method
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reqInfo.RequestHeaders = req.Header
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return reqInfo
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}
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// Complete adds information about the response to the RequestInfo
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func (r *RequestInfo) Complete(response *http.Response, err error) {
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if err != nil {
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r.ResponseErr = err
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return
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}
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r.ResponseStatus = response.Status
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r.ResponseHeaders = response.Header
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}
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// ToCurl returns a string that can be run as a command in a terminal (minus the body)
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func (r RequestInfo) ToCurl() string {
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headers := ""
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for key, values := range map[string][]string(r.RequestHeaders) {
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for _, value := range values {
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headers += fmt.Sprintf(` -H %q`, fmt.Sprintf("%s: %s", key, value))
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}
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}
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return fmt.Sprintf("curl -k -v -X%s %s %s", r.RequestVerb, headers, r.RequestURL)
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}
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// DebuggingRoundTripper will display information about the requests passing through it based on what is configured
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type DebuggingRoundTripper struct {
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delegatedRoundTripper http.RoundTripper
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Levels sets.String
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}
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const (
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JustURL string = "url"
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URLTiming string = "urltiming"
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CurlCommand string = "curlcommand"
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RequestHeaders string = "requestheaders"
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ResponseStatus string = "responsestatus"
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ResponseHeaders string = "responseheaders"
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)
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func NewDebuggingRoundTripper(rt http.RoundTripper, levels ...string) *DebuggingRoundTripper {
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return &DebuggingRoundTripper{rt, sets.NewString(levels...)}
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}
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func (rt *DebuggingRoundTripper) RoundTrip(req *http.Request) (*http.Response, error) {
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reqInfo := NewRequestInfo(req)
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if rt.Levels.Has(JustURL) {
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glog.Infof("%s %s", reqInfo.RequestVerb, reqInfo.RequestURL)
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}
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if rt.Levels.Has(CurlCommand) {
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glog.Infof("%s", reqInfo.ToCurl())
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}
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if rt.Levels.Has(RequestHeaders) {
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glog.Infof("Request Headers:")
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for key, values := range reqInfo.RequestHeaders {
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for _, value := range values {
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glog.Infof(" %s: %s", key, value)
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}
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}
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}
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startTime := time.Now()
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response, err := rt.delegatedRoundTripper.RoundTrip(req)
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reqInfo.Duration = time.Since(startTime)
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reqInfo.Complete(response, err)
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if rt.Levels.Has(URLTiming) {
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glog.Infof("%s %s %s in %d milliseconds", reqInfo.RequestVerb, reqInfo.RequestURL, reqInfo.ResponseStatus, reqInfo.Duration.Nanoseconds()/int64(time.Millisecond))
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}
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if rt.Levels.Has(ResponseStatus) {
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glog.Infof("Response Status: %s in %d milliseconds", reqInfo.ResponseStatus, reqInfo.Duration.Nanoseconds()/int64(time.Millisecond))
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}
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if rt.Levels.Has(ResponseHeaders) {
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glog.Infof("Response Headers:")
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for key, values := range reqInfo.ResponseHeaders {
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for _, value := range values {
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glog.Infof(" %s: %s", key, value)
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}
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}
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}
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return response, err
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}
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