48 lines
950 B
Go
48 lines
950 B
Go
package ready
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import (
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"sort"
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"strings"
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"sync"
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)
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// list is a structure that holds the plugins that signals readiness for this server block.
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type list struct {
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sync.RWMutex
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rs []Readiness
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names []string
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}
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// Append adds a new readiness to l.
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func (l *list) Append(r Readiness, name string) {
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l.Lock()
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defer l.Unlock()
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l.rs = append(l.rs, r)
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l.names = append(l.names, name)
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}
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// Ready return true when all plugins ready, if the returned value is false the string
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// contains a comma separated list of plugins that are not ready.
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func (l *list) Ready() (bool, string) {
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l.RLock()
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defer l.RUnlock()
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ok := true
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s := []string{}
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for i, r := range l.rs {
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if r == nil {
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continue
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}
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if !r.Ready() {
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ok = false
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s = append(s, l.names[i])
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} else {
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// if ok, this plugin is ready and will not be queried anymore.
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l.rs[i] = nil
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}
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}
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if ok {
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return true, ""
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}
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sort.Strings(s)
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return false, strings.Join(s, ",")
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}
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