60 lines
1.2 KiB
Go
60 lines
1.2 KiB
Go
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package srv
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import (
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"context"
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"errors"
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"math/rand"
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"net/http"
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"sync"
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"time"
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)
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func handleHealthCheckFunc(_ context.Context) func(w http.ResponseWriter, r *http.Request) {
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// Return http handle func
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return func(w http.ResponseWriter, r *http.Request) {
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var err error
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var healthChecksFailed bool
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// TODO: Insert useful health checks here
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// For multiple checks, perform concurrently
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// Consider using errors.Join() for multiple checks
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var hcWg sync.WaitGroup
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for range 5 {
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hcWg.Add(1)
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go func() {
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defer hcWg.Done()
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err = errors.Join(err, dummyHealthCheck(r.Context()))
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}()
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}
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hcWg.Wait()
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if err != nil {
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healthChecksFailed = true
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}
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// TODO: Friendly reminder...
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err = errors.New("WARNING: Unimplemented health-check")
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if healthChecksFailed {
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w.WriteHeader(http.StatusInternalServerError)
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}
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if err != nil {
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w.Write([]byte(err.Error()))
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} else {
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w.Write([]byte("ok"))
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}
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}
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}
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func dummyHealthCheck(ctx context.Context) error {
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workFor := rand.Intn(750)
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ticker := time.NewTicker(time.Duration(time.Duration(workFor) * time.Millisecond))
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select {
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case <-ticker.C:
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return nil
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case <-ctx.Done():
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return ctx.Err()
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}
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}
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