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poll.go
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/
poll.go
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package handler
import (
"encoding/json"
"log"
"net/http"
"sort"
"github.com/bonsai-oss/jsonstatus"
"github.com/bonsai-oss/mux"
"gorm.io/gorm"
"github.com/bonsai-oss/eventdb/v2/internal/database/model"
)
func PollHandler(db *gorm.DB) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
vars := mux.Vars(r)
streamName, streamPresent := vars["streamName"]
eventID, eventIDPresent := vars["eventID"]
if streamPresent && eventIDPresent {
jsonstatus.Status{Code: http.StatusInternalServerError, Message: "going to hell!!!!"}.Encode(w)
return
}
view := model.EventView{}
var events []model.Event
query := db.Find(&model.Event{})
if streamPresent {
query = query.Where("stream_name = ?", streamName)
} else if eventIDPresent {
query = query.Where("id = ?", eventID)
}
tx := query.Find(&events)
view.Entries = append(view.Entries, events...)
w.Header().Set("Content-Type", "application/json")
switch tx.Error {
case nil:
// backward sort events by updated_at time
if len(view.Entries) > 0 {
sort.Slice(view.Entries, func(j, i int) bool {
return view.Entries[i].UpdatedAt.Before(view.Entries[j].UpdatedAt)
})
view.LastModified = view.Entries[0].UpdatedAt
}
// encode view to client
if err := json.NewEncoder(w).Encode(view); err != nil {
log.Println(err)
}
case gorm.ErrRecordNotFound:
jsonstatus.Status{Code: http.StatusNotFound, Message: tx.Error.Error()}.Encode(w)
default:
jsonstatus.Status{Code: http.StatusInternalServerError, Message: tx.Error.Error()}.Encode(w)
}
}
}