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causality.go
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/
causality.go
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package versionserver
import (
"encoding/json"
"net/http"
"strconv"
"code.cloudfoundry.org/lager"
"github.com/pf-qiu/concourse/v6/atc/db"
)
// IMPORTANT: This is not yet tested because it is not being used
func (s *Server) GetCausality(pipeline db.Pipeline) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
versionID, err := strconv.Atoi(r.FormValue(":resource_version_id"))
if err != nil {
w.WriteHeader(http.StatusBadRequest)
return
}
hLog := s.logger.Session("causality", lager.Data{
"version": versionID,
})
causality, err := pipeline.Causality(versionID)
if err != nil {
hLog.Error("failed-to-fetch", err)
w.WriteHeader(http.StatusInternalServerError)
return
}
hLog.Debug("fetched", lager.Data{"length": len(causality)})
w.Header().Set("Content-Type", "application/json")
w.WriteHeader(http.StatusOK)
_ = json.NewEncoder(w).Encode(causality)
})
}