124 lines
3.3 KiB
Go
124 lines
3.3 KiB
Go
package websvc
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import (
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"context"
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"encoding/json"
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"fmt"
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"net/http"
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"net/netip"
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"time"
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"github.com/AdguardTeam/AdGuardHome/internal/aghhttp"
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"github.com/AdguardTeam/AdGuardHome/internal/next/agh"
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"github.com/AdguardTeam/golibs/log"
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)
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// HTTP Settings Handlers
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// ReqPatchSettingsHTTP describes the request to the PATCH /api/v1/settings/http
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// HTTP API.
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type ReqPatchSettingsHTTP struct {
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// TODO(a.garipov): Add more as we go.
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//
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// TODO(a.garipov): Add wait time.
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Addresses []netip.AddrPort `json:"addresses"`
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SecureAddresses []netip.AddrPort `json:"secure_addresses"`
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Timeout aghhttp.JSONDuration `json:"timeout"`
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}
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// HTTPAPIHTTPSettings are the HTTP settings as used by the HTTP API. See the
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// HttpSettings object in the OpenAPI specification.
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type HTTPAPIHTTPSettings struct {
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// TODO(a.garipov): Add more as we go.
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Addresses []netip.AddrPort `json:"addresses"`
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SecureAddresses []netip.AddrPort `json:"secure_addresses"`
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Timeout aghhttp.JSONDuration `json:"timeout"`
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ForceHTTPS bool `json:"force_https"`
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}
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// handlePatchSettingsHTTP is the handler for the PATCH /api/v1/settings/http
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// HTTP API.
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func (svc *Service) handlePatchSettingsHTTP(w http.ResponseWriter, r *http.Request) {
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req := &ReqPatchSettingsHTTP{}
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// TODO(a.garipov): Validate nulls and proper JSON patch.
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err := json.NewDecoder(r.Body).Decode(&req)
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if err != nil {
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aghhttp.WriteJSONResponseError(w, r, fmt.Errorf("decoding: %w", err))
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return
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}
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newConf := &Config{
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Pprof: &PprofConfig{
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Port: svc.pprofPort,
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Enabled: svc.pprof != nil,
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},
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ConfigManager: svc.confMgr,
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Frontend: svc.frontend,
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TLS: svc.tls,
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Addresses: req.Addresses,
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SecureAddresses: req.SecureAddresses,
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Timeout: time.Duration(req.Timeout),
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ForceHTTPS: svc.forceHTTPS,
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}
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aghhttp.WriteJSONResponseOK(w, r, &HTTPAPIHTTPSettings{
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Addresses: newConf.Addresses,
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SecureAddresses: newConf.SecureAddresses,
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Timeout: aghhttp.JSONDuration(newConf.Timeout),
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ForceHTTPS: newConf.ForceHTTPS,
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})
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cancelUpd := func() {}
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updCtx := context.Background()
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ctx := r.Context()
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if deadline, ok := ctx.Deadline(); ok {
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updCtx, cancelUpd = context.WithDeadline(updCtx, deadline)
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}
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// Launch the new HTTP service in a separate goroutine to let this handler
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// finish and thus, this server to shutdown.
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go svc.relaunch(updCtx, cancelUpd, newConf)
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}
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// relaunch updates the web service in the configuration manager and starts it.
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// It is intended to be used as a goroutine.
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func (svc *Service) relaunch(ctx context.Context, cancel context.CancelFunc, newConf *Config) {
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defer log.OnPanic("websvc: relaunching")
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defer cancel()
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err := svc.confMgr.UpdateWeb(ctx, newConf)
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if err != nil {
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log.Error("websvc: updating web: %s", err)
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return
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}
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// TODO(a.garipov): Consider better ways to do this.
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const maxUpdDur = 5 * time.Second
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updStart := time.Now()
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var newSvc agh.ServiceWithConfig[*Config]
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for newSvc = svc.confMgr.Web(); newSvc == svc; {
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if time.Since(updStart) >= maxUpdDur {
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log.Error("websvc: failed to update svc after %s", maxUpdDur)
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return
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}
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log.Debug("websvc: waiting for new websvc to be configured")
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time.Sleep(100 * time.Millisecond)
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}
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err = newSvc.Start()
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if err != nil {
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log.Error("websvc: new svc failed to start with error: %s", err)
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}
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}
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