c9117af080
As we walk away from 1.4, godep no longer requires to have stuff into workspace and we no longer need the symlink. Signed-off-by: Olivier Gambier <olivier@docker.com>
45 lines
1.1 KiB
Go
45 lines
1.1 KiB
Go
package gophercloud
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import (
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"errors"
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"strings"
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"time"
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)
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// WaitFor polls a predicate function, once per second, up to a timeout limit.
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// It usually does this to wait for a resource to transition to a certain state.
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// Resource packages will wrap this in a more convenient function that's
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// specific to a certain resource, but it can also be useful on its own.
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func WaitFor(timeout int, predicate func() (bool, error)) error {
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start := time.Now().Second()
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for {
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// Force a 1s sleep
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time.Sleep(1 * time.Second)
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// If a timeout is set, and that's been exceeded, shut it down
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if timeout >= 0 && time.Now().Second()-start >= timeout {
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return errors.New("A timeout occurred")
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}
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// Execute the function
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satisfied, err := predicate()
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if err != nil {
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return err
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}
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if satisfied {
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return nil
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}
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}
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}
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// NormalizeURL is an internal function to be used by provider clients.
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//
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// It ensures that each endpoint URL has a closing `/`, as expected by
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// ServiceClient's methods.
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func NormalizeURL(url string) string {
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if !strings.HasSuffix(url, "/") {
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return url + "/"
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}
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return url
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}
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