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5264b61951
Typically this means the http caller has closed the connection, so no point responding to them. Also check at the point we send a response back, and log to OpenTracing.
36 lines
935 B
Go
36 lines
935 B
Go
package app
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import (
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"context"
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"net/http"
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opentracing "github.com/opentracing/opentracing-go"
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"github.com/ugorji/go/codec"
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log "github.com/sirupsen/logrus"
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)
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func respondWith(ctx context.Context, w http.ResponseWriter, code int, response interface{}) {
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if err, ok := response.(error); ok {
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log.Errorf("Error %d: %v", code, err)
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response = err.Error()
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} else if 500 <= code && code < 600 {
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log.Errorf("Non-error %d: %v", code, response)
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} else if ctx.Err() != nil {
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log.Debugf("Context error %v", ctx.Err())
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code = 499
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response = nil
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}
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if span := opentracing.SpanFromContext(ctx); span != nil {
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span.LogKV("response-code", code)
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}
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w.Header().Set("Content-Type", "application/json")
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w.Header().Add("Cache-Control", "no-cache")
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w.WriteHeader(code)
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encoder := codec.NewEncoder(w, &codec.JsonHandle{})
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if err := encoder.Encode(response); err != nil {
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log.Errorf("Error encoding response: %v", err)
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}
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}
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