contrib/raftexample: Allow nodes to be removed from a running cluster
A node with ID n can be removed by DELETEing /n on the HTTP server.release-2.3
parent
7c0b6d9be9
commit
4a527be302
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@ -73,12 +73,29 @@ func (h *httpKVAPI) ServeHTTP(w http.ResponseWriter, r *http.Request) {
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}
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h.confChangeC <- cc
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// As above, optimistic that raft will apply the conf change
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w.WriteHeader(http.StatusNoContent)
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case r.Method == "DELETE":
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nodeId, err := strconv.ParseUint(key[1:], 0, 64)
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if err != nil {
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log.Printf("Failed to convert ID for conf change (%v)\n", err)
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http.Error(w, "Failed on DELETE", http.StatusBadRequest)
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return
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}
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cc := raftpb.ConfChange{
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Type: raftpb.ConfChangeRemoveNode,
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NodeID: nodeId,
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}
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h.confChangeC <- cc
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// As above, optimistic that raft will apply the conf change
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w.WriteHeader(http.StatusNoContent)
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default:
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w.Header().Set("Allow", "PUT")
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w.Header().Add("Allow", "GET")
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w.Header().Add("Allow", "POST")
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w.Header().Add("Allow", "DELETE")
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http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
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}
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}
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