41 lines
699 B
Go
41 lines
699 B
Go
package http
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import (
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"errors"
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"net/http"
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"github.com/micro/go-micro/v3/router"
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"github.com/micro/go-micro/v3/selector"
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)
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type roundTripper struct {
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rt http.RoundTripper
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st selector.Selector
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opts Options
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}
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func (r *roundTripper) RoundTrip(req *http.Request) (*http.Response, error) {
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routes, err := r.opts.Router.Lookup(router.QueryService(req.URL.Host))
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if err != nil {
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return nil, err
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}
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// rudimentary retry 3 times
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for i := 0; i < 3; i++ {
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route, err := r.st.Select(routes)
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if err != nil {
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continue
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}
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req.URL.Host = route.Address
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w, err := r.rt.RoundTrip(req)
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if err != nil {
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continue
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}
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return w, nil
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}
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return nil, errors.New("failed request")
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}
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