35 lines
844 B
Go
35 lines
844 B
Go
package utils
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import (
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"context"
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"errors"
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"net/http"
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"time"
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)
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// ServeHTTP drains requests before its caller closes databases and files.
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func ServeHTTP(ctx context.Context, address string, handler http.Handler) error {
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server := &http.Server{Addr: address, Handler: handler, ReadHeaderTimeout: 10 * time.Second, IdleTimeout: 60 * time.Second}
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finished := make(chan struct{})
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defer close(finished)
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shutdownDone := make(chan struct{})
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go func() {
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defer close(shutdownDone)
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select {
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case <-ctx.Done():
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timeout, cancel := context.WithTimeout(context.Background(), 10*time.Second)
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defer cancel()
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if err := server.Shutdown(timeout); err != nil {
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_ = server.Close()
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}
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case <-finished:
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}
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}()
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err := server.ListenAndServe()
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if errors.Is(err, http.ErrServerClosed) {
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<-shutdownDone
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return nil
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}
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return err
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}
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