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https://github.com/k3s-io/kubernetes.git
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client-go: remove no longer used finalURLTemplate
The restclient metrics were updated to track only the host field of the url, the finalURLTemplate is not longer needed, its only goal was to replace name and namespace in the path to avoid cardinality.
This commit is contained in:
Antonio Ojea
parent
227deba223
commit
bebf5a608f
@ -496,84 +496,6 @@ func (r *Request) URL() *url.URL {
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return finalURL
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}
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// finalURLTemplate is similar to URL(), but will make all specific parameter values equal
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// - instead of name or namespace, "{name}" and "{namespace}" will be used, and all query
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// parameters will be reset. This creates a copy of the url so as not to change the
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// underlying object.
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func (r Request) finalURLTemplate() url.URL {
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newParams := url.Values{}
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v := []string{"{value}"}
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for k := range r.params {
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newParams[k] = v
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}
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r.params = newParams
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url := r.URL()
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segments := strings.Split(url.Path, "/")
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groupIndex := 0
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index := 0
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trimmedBasePath := ""
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if url != nil && r.c.base != nil && strings.Contains(url.Path, r.c.base.Path) {
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p := strings.TrimPrefix(url.Path, r.c.base.Path)
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if !strings.HasPrefix(p, "/") {
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p = "/" + p
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}
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// store the base path that we have trimmed so we can append it
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// before returning the URL
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trimmedBasePath = r.c.base.Path
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segments = strings.Split(p, "/")
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groupIndex = 1
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}
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if len(segments) <= 2 {
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return *url
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}
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const CoreGroupPrefix = "api"
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const NamedGroupPrefix = "apis"
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isCoreGroup := segments[groupIndex] == CoreGroupPrefix
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isNamedGroup := segments[groupIndex] == NamedGroupPrefix
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if isCoreGroup {
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// checking the case of core group with /api/v1/... format
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index = groupIndex + 2
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} else if isNamedGroup {
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// checking the case of named group with /apis/apps/v1/... format
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index = groupIndex + 3
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} else {
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// this should not happen that the only two possibilities are /api... and /apis..., just want to put an
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// outlet here in case more API groups are added in future if ever possible:
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// https://kubernetes.io/docs/concepts/overview/kubernetes-api/#api-groups
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// if a wrong API groups name is encountered, return the {prefix} for url.Path
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url.Path = "/{prefix}"
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url.RawQuery = ""
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return *url
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}
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//switch segLength := len(segments) - index; segLength {
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switch {
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// case len(segments) - index == 1:
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// resource (with no name) do nothing
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case len(segments)-index == 2:
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// /$RESOURCE/$NAME: replace $NAME with {name}
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segments[index+1] = "{name}"
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case len(segments)-index == 3:
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if segments[index+2] == "finalize" || segments[index+2] == "status" {
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// /$RESOURCE/$NAME/$SUBRESOURCE: replace $NAME with {name}
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segments[index+1] = "{name}"
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} else {
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// /namespace/$NAMESPACE/$RESOURCE: replace $NAMESPACE with {namespace}
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segments[index+1] = "{namespace}"
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}
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case len(segments)-index >= 4:
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segments[index+1] = "{namespace}"
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// /namespace/$NAMESPACE/$RESOURCE/$NAME: replace $NAMESPACE with {namespace}, $NAME with {name}
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if segments[index+3] != "finalize" && segments[index+3] != "status" {
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// /$RESOURCE/$NAME/$SUBRESOURCE: replace $NAME with {name}
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segments[index+3] = "{name}"
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}
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}
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url.Path = path.Join(trimmedBasePath, path.Join(segments...))
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return *url
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}
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func (r *Request) tryThrottleWithInfo(ctx context.Context, retryInfo string) error {
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if r.rateLimiter == nil {
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return nil
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@ -601,7 +523,7 @@ func (r *Request) tryThrottleWithInfo(ctx context.Context, retryInfo string) err
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// but we use a throttled logger to prevent spamming.
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globalThrottledLogger.Infof("%s", message)
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}
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metrics.RateLimiterLatency.Observe(ctx, r.verb, r.finalURLTemplate(), latency)
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metrics.RateLimiterLatency.Observe(ctx, r.verb, *r.URL(), latency)
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return err
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}
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@ -929,7 +851,7 @@ func (r *Request) request(ctx context.Context, fn func(*http.Request, *http.Resp
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//Metrics for total request latency
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start := time.Now()
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defer func() {
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metrics.RequestLatency.Observe(ctx, r.verb, r.finalURLTemplate(), time.Since(start))
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metrics.RequestLatency.Observe(ctx, r.verb, *r.URL(), time.Since(start))
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}()
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if r.err != nil {
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@ -337,206 +337,6 @@ func TestResultIntoWithNoBodyReturnsErr(t *testing.T) {
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}
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}
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func TestURLTemplate(t *testing.T) {
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uri, _ := url.Parse("http://localhost/some/base/url/path")
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uriSingleSlash, _ := url.Parse("http://localhost/")
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testCases := []struct {
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Request *Request
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ExpectedFullURL string
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ExpectedFinalURL string
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}{
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{
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// non dynamic client
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Request: NewRequestWithClient(uri, "", ClientContentConfig{GroupVersion: schema.GroupVersion{Group: "test"}}, nil).Verb("POST").
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Prefix("api", "v1").Resource("r1").Namespace("ns").Name("nm").Param("p0", "v0"),
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ExpectedFullURL: "http://localhost/some/base/url/path/api/v1/namespaces/ns/r1/nm?p0=v0",
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ExpectedFinalURL: "http://localhost/some/base/url/path/api/v1/namespaces/%7Bnamespace%7D/r1/%7Bname%7D?p0=%7Bvalue%7D",
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},
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{
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// non dynamic client with wrong api group
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Request: NewRequestWithClient(uri, "", ClientContentConfig{GroupVersion: schema.GroupVersion{Group: "test"}}, nil).Verb("POST").
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Prefix("pre1", "v1").Resource("r1").Namespace("ns").Name("nm").Param("p0", "v0"),
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ExpectedFullURL: "http://localhost/some/base/url/path/pre1/v1/namespaces/ns/r1/nm?p0=v0",
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ExpectedFinalURL: "http://localhost/%7Bprefix%7D",
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},
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{
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// dynamic client with core group + namespace + resourceResource (with name)
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// /api/$RESOURCEVERSION/namespaces/$NAMESPACE/$RESOURCE/%NAME
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Request: NewRequestWithClient(uri, "", ClientContentConfig{GroupVersion: schema.GroupVersion{Group: "test"}}, nil).Verb("DELETE").
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Prefix("/api/v1/namespaces/ns/r1/name1"),
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ExpectedFullURL: "http://localhost/some/base/url/path/api/v1/namespaces/ns/r1/name1",
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ExpectedFinalURL: "http://localhost/some/base/url/path/api/v1/namespaces/%7Bnamespace%7D/r1/%7Bname%7D",
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},
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{
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// dynamic client with named group + namespace + resourceResource (with name)
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// /apis/$NAMEDGROUPNAME/$RESOURCEVERSION/namespaces/$NAMESPACE/$RESOURCE/%NAME
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Request: NewRequestWithClient(uri, "", ClientContentConfig{GroupVersion: schema.GroupVersion{Group: "test"}}, nil).Verb("DELETE").
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Prefix("/apis/g1/v1/namespaces/ns/r1/name1"),
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ExpectedFullURL: "http://localhost/some/base/url/path/apis/g1/v1/namespaces/ns/r1/name1",
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ExpectedFinalURL: "http://localhost/some/base/url/path/apis/g1/v1/namespaces/%7Bnamespace%7D/r1/%7Bname%7D",
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},
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{
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// dynamic client with core group + namespace + resourceResource (with NO name)
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// /api/$RESOURCEVERSION/namespaces/$NAMESPACE/$RESOURCE
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Request: NewRequestWithClient(uri, "", ClientContentConfig{GroupVersion: schema.GroupVersion{Group: "test"}}, nil).Verb("DELETE").
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Prefix("/api/v1/namespaces/ns/r1"),
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ExpectedFullURL: "http://localhost/some/base/url/path/api/v1/namespaces/ns/r1",
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ExpectedFinalURL: "http://localhost/some/base/url/path/api/v1/namespaces/%7Bnamespace%7D/r1",
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},
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{
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// dynamic client with named group + namespace + resourceResource (with NO name)
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// /apis/$NAMEDGROUPNAME/$RESOURCEVERSION/namespaces/$NAMESPACE/$RESOURCE
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Request: NewRequestWithClient(uri, "", ClientContentConfig{GroupVersion: schema.GroupVersion{Group: "test"}}, nil).Verb("DELETE").
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Prefix("/apis/g1/v1/namespaces/ns/r1"),
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ExpectedFullURL: "http://localhost/some/base/url/path/apis/g1/v1/namespaces/ns/r1",
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ExpectedFinalURL: "http://localhost/some/base/url/path/apis/g1/v1/namespaces/%7Bnamespace%7D/r1",
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},
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{
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// dynamic client with core group + resourceResource (with name)
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// /api/$RESOURCEVERSION/$RESOURCE/%NAME
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Request: NewRequestWithClient(uri, "", ClientContentConfig{GroupVersion: schema.GroupVersion{Group: "test"}}, nil).Verb("DELETE").
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Prefix("/api/v1/r1/name1"),
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ExpectedFullURL: "http://localhost/some/base/url/path/api/v1/r1/name1",
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ExpectedFinalURL: "http://localhost/some/base/url/path/api/v1/r1/%7Bname%7D",
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},
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{
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// dynamic client with named group + resourceResource (with name)
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// /apis/$NAMEDGROUPNAME/$RESOURCEVERSION/$RESOURCE/%NAME
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Request: NewRequestWithClient(uri, "", ClientContentConfig{GroupVersion: schema.GroupVersion{Group: "test"}}, nil).Verb("DELETE").
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Prefix("/apis/g1/v1/r1/name1"),
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ExpectedFullURL: "http://localhost/some/base/url/path/apis/g1/v1/r1/name1",
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ExpectedFinalURL: "http://localhost/some/base/url/path/apis/g1/v1/r1/%7Bname%7D",
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},
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{
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// dynamic client with named group + namespace + resourceResource (with name) + subresource
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// /apis/$NAMEDGROUPNAME/$RESOURCEVERSION/namespaces/$NAMESPACE/$RESOURCE/%NAME/$SUBRESOURCE
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Request: NewRequestWithClient(uri, "", ClientContentConfig{GroupVersion: schema.GroupVersion{Group: "test"}}, nil).Verb("DELETE").
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Prefix("/apis/namespaces/namespaces/namespaces/namespaces/namespaces/namespaces/finalize"),
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ExpectedFullURL: "http://localhost/some/base/url/path/apis/namespaces/namespaces/namespaces/namespaces/namespaces/namespaces/finalize",
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ExpectedFinalURL: "http://localhost/some/base/url/path/apis/namespaces/namespaces/namespaces/%7Bnamespace%7D/namespaces/%7Bname%7D/finalize",
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},
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{
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// dynamic client with named group + namespace + resourceResource (with name)
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// /apis/$NAMEDGROUPNAME/$RESOURCEVERSION/namespaces/$NAMESPACE/$RESOURCE/%NAME
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Request: NewRequestWithClient(uri, "", ClientContentConfig{GroupVersion: schema.GroupVersion{Group: "test"}}, nil).Verb("DELETE").
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Prefix("/apis/namespaces/namespaces/namespaces/namespaces/namespaces/namespaces"),
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ExpectedFullURL: "http://localhost/some/base/url/path/apis/namespaces/namespaces/namespaces/namespaces/namespaces/namespaces",
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ExpectedFinalURL: "http://localhost/some/base/url/path/apis/namespaces/namespaces/namespaces/%7Bnamespace%7D/namespaces/%7Bname%7D",
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},
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{
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// dynamic client with named group + namespace + resourceResource (with NO name) + subresource
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// /apis/$NAMEDGROUPNAME/$RESOURCEVERSION/namespaces/$NAMESPACE/$RESOURCE/%SUBRESOURCE
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Request: NewRequestWithClient(uri, "", ClientContentConfig{GroupVersion: schema.GroupVersion{Group: "test"}}, nil).Verb("DELETE").
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Prefix("/apis/namespaces/namespaces/namespaces/namespaces/namespaces/finalize"),
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ExpectedFullURL: "http://localhost/some/base/url/path/apis/namespaces/namespaces/namespaces/namespaces/namespaces/finalize",
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ExpectedFinalURL: "http://localhost/some/base/url/path/apis/namespaces/namespaces/namespaces/%7Bnamespace%7D/namespaces/finalize",
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},
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{
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// dynamic client with named group + namespace + resourceResource (with NO name) + subresource
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// /apis/$NAMEDGROUPNAME/$RESOURCEVERSION/namespaces/$NAMESPACE/$RESOURCE/%SUBRESOURCE
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Request: NewRequestWithClient(uri, "", ClientContentConfig{GroupVersion: schema.GroupVersion{Group: "test"}}, nil).Verb("DELETE").
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Prefix("/apis/namespaces/namespaces/namespaces/namespaces/namespaces/status"),
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ExpectedFullURL: "http://localhost/some/base/url/path/apis/namespaces/namespaces/namespaces/namespaces/namespaces/status",
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ExpectedFinalURL: "http://localhost/some/base/url/path/apis/namespaces/namespaces/namespaces/%7Bnamespace%7D/namespaces/status",
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},
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{
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// dynamic client with named group + namespace + resourceResource (with no name)
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// /apis/$NAMEDGROUPNAME/$RESOURCEVERSION/namespaces/$NAMESPACE/$RESOURCE/%NAME
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Request: NewRequestWithClient(uri, "", ClientContentConfig{GroupVersion: schema.GroupVersion{Group: "test"}}, nil).Verb("DELETE").
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Prefix("/apis/namespaces/namespaces/namespaces/namespaces/namespaces"),
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ExpectedFullURL: "http://localhost/some/base/url/path/apis/namespaces/namespaces/namespaces/namespaces/namespaces",
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ExpectedFinalURL: "http://localhost/some/base/url/path/apis/namespaces/namespaces/namespaces/%7Bnamespace%7D/namespaces",
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},
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{
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// dynamic client with named group + resourceResource (with name) + subresource
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// /apis/$NAMEDGROUPNAME/$RESOURCEVERSION/namespaces/$NAMESPACE/$RESOURCE/%NAME
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Request: NewRequestWithClient(uri, "", ClientContentConfig{GroupVersion: schema.GroupVersion{Group: "test"}}, nil).Verb("DELETE").
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Prefix("/apis/namespaces/namespaces/namespaces/namespaces/finalize"),
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ExpectedFullURL: "http://localhost/some/base/url/path/apis/namespaces/namespaces/namespaces/namespaces/finalize",
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ExpectedFinalURL: "http://localhost/some/base/url/path/apis/namespaces/namespaces/namespaces/%7Bname%7D/finalize",
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},
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{
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// dynamic client with named group + resourceResource (with name) + subresource
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// /apis/$NAMEDGROUPNAME/$RESOURCEVERSION/namespaces/$NAMESPACE/$RESOURCE/%NAME
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Request: NewRequestWithClient(uri, "", ClientContentConfig{GroupVersion: schema.GroupVersion{Group: "test"}}, nil).Verb("DELETE").
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Prefix("/apis/namespaces/namespaces/namespaces/namespaces/status"),
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ExpectedFullURL: "http://localhost/some/base/url/path/apis/namespaces/namespaces/namespaces/namespaces/status",
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ExpectedFinalURL: "http://localhost/some/base/url/path/apis/namespaces/namespaces/namespaces/%7Bname%7D/status",
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},
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{
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// dynamic client with named group + resourceResource (with name)
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// /apis/$NAMEDGROUPNAME/$RESOURCEVERSION/$RESOURCE/%NAME
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Request: NewRequestWithClient(uri, "", ClientContentConfig{GroupVersion: schema.GroupVersion{Group: "test"}}, nil).Verb("DELETE").
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Prefix("/apis/namespaces/namespaces/namespaces/namespaces"),
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ExpectedFullURL: "http://localhost/some/base/url/path/apis/namespaces/namespaces/namespaces/namespaces",
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ExpectedFinalURL: "http://localhost/some/base/url/path/apis/namespaces/namespaces/namespaces/%7Bname%7D",
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},
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{
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// dynamic client with named group + resourceResource (with no name)
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// /apis/$NAMEDGROUPNAME/$RESOURCEVERSION/$RESOURCE/%NAME
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Request: NewRequestWithClient(uri, "", ClientContentConfig{GroupVersion: schema.GroupVersion{Group: "test"}}, nil).Verb("DELETE").
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Prefix("/apis/namespaces/namespaces/namespaces"),
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ExpectedFullURL: "http://localhost/some/base/url/path/apis/namespaces/namespaces/namespaces",
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ExpectedFinalURL: "http://localhost/some/base/url/path/apis/namespaces/namespaces/namespaces",
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},
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{
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// dynamic client with wrong api group + namespace + resourceResource (with name) + subresource
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// /apis/$NAMEDGROUPNAME/$RESOURCEVERSION/namespaces/$NAMESPACE/$RESOURCE/%NAME/$SUBRESOURCE
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Request: NewRequestWithClient(uri, "", ClientContentConfig{GroupVersion: schema.GroupVersion{Group: "test"}}, nil).Verb("DELETE").
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Prefix("/pre1/namespaces/namespaces/namespaces/namespaces/namespaces/namespaces/finalize"),
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ExpectedFullURL: "http://localhost/some/base/url/path/pre1/namespaces/namespaces/namespaces/namespaces/namespaces/namespaces/finalize",
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ExpectedFinalURL: "http://localhost/%7Bprefix%7D",
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},
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{
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// dynamic client with core group + namespace + resourceResource (with name) where baseURL is a single /
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// /api/$RESOURCEVERSION/namespaces/$NAMESPACE/$RESOURCE/%NAME
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Request: NewRequestWithClient(uriSingleSlash, "", ClientContentConfig{GroupVersion: schema.GroupVersion{Group: "test"}}, nil).Verb("DELETE").
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Prefix("/api/v1/namespaces/ns/r2/name1"),
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ExpectedFullURL: "http://localhost/api/v1/namespaces/ns/r2/name1",
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ExpectedFinalURL: "http://localhost/api/v1/namespaces/%7Bnamespace%7D/r2/%7Bname%7D",
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},
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{
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// dynamic client with core group + namespace + resourceResource (with name) where baseURL is 'some/base/url/path'
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// /api/$RESOURCEVERSION/namespaces/$NAMESPACE/$RESOURCE/%NAME
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Request: NewRequestWithClient(uri, "", ClientContentConfig{GroupVersion: schema.GroupVersion{Group: "test"}}, nil).Verb("DELETE").
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Prefix("/api/v1/namespaces/ns/r3/name1"),
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ExpectedFullURL: "http://localhost/some/base/url/path/api/v1/namespaces/ns/r3/name1",
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ExpectedFinalURL: "http://localhost/some/base/url/path/api/v1/namespaces/%7Bnamespace%7D/r3/%7Bname%7D",
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},
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{
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// dynamic client where baseURL is a single /
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// /
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Request: NewRequestWithClient(uriSingleSlash, "", ClientContentConfig{GroupVersion: schema.GroupVersion{Group: "test"}}, nil).Verb("DELETE").
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Prefix("/"),
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ExpectedFullURL: "http://localhost/",
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ExpectedFinalURL: "http://localhost/",
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},
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{
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// dynamic client where baseURL is a single /
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// /version
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Request: NewRequestWithClient(uriSingleSlash, "", ClientContentConfig{GroupVersion: schema.GroupVersion{Group: "test"}}, nil).Verb("DELETE").
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Prefix("/version"),
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ExpectedFullURL: "http://localhost/version",
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ExpectedFinalURL: "http://localhost/version",
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},
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}
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for i, testCase := range testCases {
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r := testCase.Request
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full := r.URL()
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if full.String() != testCase.ExpectedFullURL {
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t.Errorf("%d: unexpected initial URL: %s %s", i, full, testCase.ExpectedFullURL)
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}
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actualURL := r.finalURLTemplate()
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actual := actualURL.String()
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if actual != testCase.ExpectedFinalURL {
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t.Errorf("%d: unexpected URL template: %s %s", i, actual, testCase.ExpectedFinalURL)
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}
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if r.URL().String() != full.String() {
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t.Errorf("%d, creating URL template changed request: %s -> %s", i, full.String(), r.URL().String())
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}
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}
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}
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func TestTransformResponse(t *testing.T) {
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invalid := []byte("aaaaa")
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uri, _ := url.Parse("http://localhost")
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