steve
ddc07609cb
P2R-13a. restic.Env gains LimitUploadKBps/LimitDownloadKBps which are
emitted as global --limit-upload/--limit-download flags before the
subcommand on every invocation. Agent dispatcher tracks host-wide
caps received via config.update; server pushes them on hello and
after PUT /api/hosts/{id}/bandwidth.
Also extends api.CommandRunPayload with optional per-job overrides
(BandwidthUpKBps/Down + PreHook/PostHook); the override consumers
land in T2/T6.
68 lines
2.2 KiB
Go
68 lines
2.2 KiB
Go
// host_bandwidth.go — REST API for /api/hosts/{id}/bandwidth.
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//
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// Host-wide upload/download caps (KB/s). Applied to every restic
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// invocation as --limit-upload / --limit-download. Pass null /
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// omit a field to clear that cap.
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package http
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import (
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"encoding/json"
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"errors"
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stdhttp "net/http"
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"github.com/go-chi/chi/v5"
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"gitea.dcglab.co.uk/steve/restic-manager/internal/store"
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)
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type hostBandwidthRequest struct {
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BandwidthUpKBps *int `json:"bandwidth_up_kbps"`
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BandwidthDownKBps *int `json:"bandwidth_down_kbps"`
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}
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type hostBandwidthView struct {
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BandwidthUpKBps *int `json:"bandwidth_up_kbps"`
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BandwidthDownKBps *int `json:"bandwidth_down_kbps"`
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}
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func (s *Server) handleUpdateHostBandwidth(w stdhttp.ResponseWriter, r *stdhttp.Request) {
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if !s.authedUser(r) {
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writeJSONError(w, stdhttp.StatusUnauthorized, "unauthorized", "")
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return
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}
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hostID := chi.URLParam(r, "id")
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if _, err := s.deps.Store.GetHost(r.Context(), hostID); err != nil {
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if errors.Is(err, store.ErrNotFound) {
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writeJSONError(w, stdhttp.StatusNotFound, "host_not_found", "")
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return
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}
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writeJSONError(w, stdhttp.StatusInternalServerError, "internal", "")
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return
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}
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var req hostBandwidthRequest
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if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
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writeJSONError(w, stdhttp.StatusBadRequest, "invalid_json", err.Error())
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return
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}
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if req.BandwidthUpKBps != nil && *req.BandwidthUpKBps < 0 {
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writeJSONError(w, stdhttp.StatusBadRequest, "invalid_value",
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"bandwidth_up_kbps must be non-negative")
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return
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}
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if req.BandwidthDownKBps != nil && *req.BandwidthDownKBps < 0 {
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writeJSONError(w, stdhttp.StatusBadRequest, "invalid_value",
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"bandwidth_down_kbps must be non-negative")
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return
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}
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if err := s.deps.Store.SetHostBandwidth(r.Context(), hostID, req.BandwidthUpKBps, req.BandwidthDownKBps); err != nil {
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writeJSONError(w, stdhttp.StatusInternalServerError, "internal", err.Error())
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return
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}
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// Fan out to the agent if connected. Errors are non-fatal — the
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// next reconnect's onAgentHello will resync.
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if s.deps.Hub != nil && s.deps.Hub.Connected(hostID) {
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_ = s.pushBandwidthToAgent(r.Context(), hostID, req.BandwidthUpKBps, req.BandwidthDownKBps)
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}
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writeJSON(w, stdhttp.StatusOK, hostBandwidthView(req))
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}
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