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health.go
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/
health.go
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package http
import (
"context"
"net/http"
"net/url"
"github.com/andrescosta/goico/pkg/service"
)
type HealthCheckClient struct {
ServerAddr string
Builder service.HTTPClient
}
func (c *HealthCheckClient) Close() error {
return nil
}
func (c *HealthCheckClient) CheckOk(_ context.Context) error {
return checkServiceHealth(c.Builder, c.ServerAddr)
}
func checkServiceHealth(s service.HTTPClient, addr string) error {
url, err := url.Parse("http://" + addr + "/health")
if err != nil {
return err
}
cli, err := s.NewHTTPClient(addr)
if err != nil {
return err
}
r := http.Request{URL: url}
res, err := cli.Do(&r)
if err != nil {
return err
}
if err := res.Body.Close(); err != nil {
return err
}
if res.StatusCode != http.StatusOK {
return service.ErrNotHealthy{Addr: addr}
}
return nil
}