mirror of
https://github.com/etcd-io/etcd.git
synced 2024-09-27 06:25:44 +00:00
50 lines
1.3 KiB
Go
50 lines
1.3 KiB
Go
package lock
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import (
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"net/http"
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"path"
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"strconv"
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"github.com/gorilla/mux"
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)
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// acquireHandler attempts to acquire a lock on the given key.
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func (h *handler) acquireHandler(w http.ResponseWriter, req *http.Request) {
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vars := mux.Vars(req)
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keypath := path.Join(prefix, vars["key"])
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ttl, err := strconv.Atoi(vars["ttl"])
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if err != nil {
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http.Error(w, "invalid ttl: " + err.Error(), http.StatusInternalServerError)
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return
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}
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// Create an incrementing id for the lock.
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resp, err := h.client.AddChild(keypath, "X", ttl)
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if err != nil {
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http.Error(w, "add lock index error: " + err.Error(), http.StatusInternalServerError)
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return
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}
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// Extract the lock index.
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index, _ := strconv.Atoi(path.Base(resp.Key))
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// Read all indices.
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resp, err = h.client.GetAll(key)
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if err != nil {
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http.Error(w, "lock children lookup error: " + err.Error(), http.StatusInternalServerError)
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return
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}
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indices := extractResponseIndices(resp)
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// TODO: child_keys := parse_and_sort_child_keys
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// TODO: if index == min(child_keys) then return 200
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// TODO: else:
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// TODO: h.client.WatchAll(key)
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// TODO: if next_lowest_key is deleted
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// TODO: get_all_keys
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// TODO: if index == min(child_keys) then return 200
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// TODO: rinse_and_repeat until we're the lowest.
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// TODO:
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}
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