95 lines
2.5 KiB
Go
95 lines
2.5 KiB
Go
package try
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import (
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"errors"
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"fmt"
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"io/ioutil"
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"net/http"
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"strings"
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"github.com/docker/libkv/store"
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)
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// ResponseCondition is a retry condition function.
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// It receives a response, and returns an error
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// if the response failed the condition.
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type ResponseCondition func(*http.Response) error
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// BodyContains returns a retry condition function.
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// The condition returns an error if the request body does not contain all the given
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// strings.
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func BodyContains(values ...string) ResponseCondition {
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return func(res *http.Response) error {
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body, err := ioutil.ReadAll(res.Body)
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if err != nil {
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return fmt.Errorf("failed to read response body: %s", err)
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}
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for _, value := range values {
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if !strings.Contains(string(body), value) {
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return fmt.Errorf("could not find '%s' in body '%s'", value, string(body))
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}
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}
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return nil
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}
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}
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// BodyContainsOr returns a retry condition function.
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// The condition returns an error if the request body does not contain one of the given
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// strings.
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func BodyContainsOr(values ...string) ResponseCondition {
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return func(res *http.Response) error {
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body, err := ioutil.ReadAll(res.Body)
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if err != nil {
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return fmt.Errorf("failed to read response body: %s", err)
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}
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for _, value := range values {
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if strings.Contains(string(body), value) {
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return nil
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}
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}
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return fmt.Errorf("could not find '%v' in body '%s'", values, string(body))
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}
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}
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// HasBody returns a retry condition function.
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// The condition returns an error if the request body does not have body content.
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func HasBody() ResponseCondition {
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return func(res *http.Response) error {
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body, err := ioutil.ReadAll(res.Body)
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if err != nil {
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return fmt.Errorf("failed to read response body: %s", err)
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}
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if len(body) == 0 {
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return errors.New("Response doesn't have body content")
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}
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return nil
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}
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}
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// StatusCodeIs returns a retry condition function.
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// The condition returns an error if the given response's status code is not the
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// given HTTP status code.
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func StatusCodeIs(status int) ResponseCondition {
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return func(res *http.Response) error {
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if res.StatusCode != status {
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return fmt.Errorf("got status code %d, wanted %d", res.StatusCode, status)
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}
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return nil
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}
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}
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// DoCondition is a retry condition function.
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// It returns an error
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type DoCondition func() error
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// KVExists is a retry condition function.
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// Verify if a Key exists in the store
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func KVExists(kv store.Store, key string) DoCondition {
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return func() error {
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_, err := kv.Exists(key, nil)
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return err
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}
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}
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