69 lines
1.6 KiB
Go
69 lines
1.6 KiB
Go
package main
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import (
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"encoding/json"
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"log"
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"net/http"
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"render231011/internal/thestore"
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"strconv"
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"strings"
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"time"
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)
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type Server struct {
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store *thestore.Store
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oplog *Oplog
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}
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func NewServer() Server {
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return Server{
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store: thestore.NewStore(),
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oplog: NewOplog(),
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}
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}
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func (server Server) ServeHTTP(w http.ResponseWriter, r *http.Request) {
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// todo middleware: rate limit
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// todo middleware: timeout requests
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// todo: replace with an actual router
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if strings.HasPrefix(r.URL.Path, "/event") && r.Method == http.MethodPost {
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server.servePostEvent(w, r)
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} else if r.URL.Path == "/events" && r.Method == http.MethodGet {
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server.serveGetEvents(w, r)
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}
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}
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func (server Server) servePostEvent(w http.ResponseWriter, r *http.Request) {
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var newEvent thestore.Event
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if err := json.NewDecoder(r.Body).Decode(&newEvent); err != nil {
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w.WriteHeader(http.StatusBadRequest)
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// todo error msg pls
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return
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}
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// todo check if action==updated service-id already exists
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server.store.Push(newEvent)
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log.Printf("ingested event %+v", newEvent)
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// todo store the op log
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server.oplog.Push(newEvent)
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}
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func (server Server) serveGetEvents(w http.ResponseWriter, r *http.Request) {
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// todo my circular queue magic
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sinceString := r.URL.Query().Get("since")
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sinceInt, err := strconv.ParseInt(sinceString, 10, 64)
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if err != nil {
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// todo emit helpful err message
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w.WriteHeader(http.StatusBadRequest)
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return
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}
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since := time.Unix(sinceInt, 0)
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result, ok := server.oplog.Since(since)
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if !ok {
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result = server.store.Dump()
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}
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json.NewEncoder(w).Encode(result)
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}
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