mirror of https://github.com/goharbor/harbor.git
95 lines
2.4 KiB
Go
95 lines
2.4 KiB
Go
// Copyright Project Harbor Authors
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//
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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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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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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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package health
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import (
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"context"
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"sort"
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"time"
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"github.com/docker/distribution/health"
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)
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var (
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timeout = 60 * time.Second
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registry = map[string]health.Checker{}
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// Ctl is a global health controller
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Ctl = NewController()
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)
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// NewController returns a health controller instance
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func NewController() Controller {
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return &controller{}
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}
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// Controller defines the health related operations
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type Controller interface {
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GetHealth(ctx context.Context) *OverallHealthStatus
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}
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type controller struct{}
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func (c *controller) GetHealth(_ context.Context) *OverallHealthStatus {
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var isHealthy healthy = true
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components := []*ComponentHealthStatus{}
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ch := make(chan *ComponentHealthStatus, len(registry))
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for name, checker := range registry {
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go check(name, checker, timeout, ch)
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}
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for i := 0; i < len(registry); i++ {
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componentStatus := <-ch
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if len(componentStatus.Error) != 0 {
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isHealthy = false
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}
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components = append(components, componentStatus)
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}
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sort.Slice(components, func(i, j int) bool { return components[i].Name < components[j].Name })
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return &OverallHealthStatus{
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Status: isHealthy.String(),
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Components: components,
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}
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}
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func check(name string, checker health.Checker,
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timeout time.Duration, c chan *ComponentHealthStatus) {
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statusChan := make(chan *ComponentHealthStatus)
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go func() {
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err := checker.Check()
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var healthy healthy = err == nil
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status := &ComponentHealthStatus{
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Name: name,
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Status: healthy.String(),
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}
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if !healthy {
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status.Error = err.Error()
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}
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statusChan <- status
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}()
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select {
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case status := <-statusChan:
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c <- status
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case <-time.After(timeout):
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var healthy healthy = false
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c <- &ComponentHealthStatus{
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Name: name,
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Status: healthy.String(),
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Error: "failed to check the health status: timeout",
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}
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}
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}
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