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reverseproxy: Add logging for dynamic A upstreams (#5857)

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Francis Lavoie 2023-10-11 11:50:44 -04:00 committed by GitHub
parent 05dbe1c171
commit a8586b05aa
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1 changed files with 11 additions and 1 deletions
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12
modules/caddyhttp/reverseproxy/upstreams.go
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@ -251,6 +251,8 @@ type AUpstreams struct {
Versions *IPVersions `json:"versions,omitempty"` Versions *IPVersions `json:"versions,omitempty"`
resolver *net.Resolver resolver *net.Resolver
logger *zap.Logger
} }
// CaddyModule returns the Caddy module information. // CaddyModule returns the Caddy module information.
@ -261,7 +263,8 @@ func (AUpstreams) CaddyModule() caddy.ModuleInfo {
} }
} }
func (au *AUpstreams) Provision(_ caddy.Context) error { func (au *AUpstreams) Provision(ctx caddy.Context) error {
au.logger = ctx.Logger()
if au.Refresh == 0 { if au.Refresh == 0 {
au.Refresh = caddy.Duration(time.Minute) au.Refresh = caddy.Duration(time.Minute)
} }
@ -343,6 +346,11 @@ func (au AUpstreams) GetUpstreams(r *http.Request) ([]*Upstream, error) {
name := repl.ReplaceAll(au.Name, "") name := repl.ReplaceAll(au.Name, "")
port := repl.ReplaceAll(au.Port, "") port := repl.ReplaceAll(au.Port, "")
au.logger.Debug("refreshing A upstreams",
zap.String("version", ipVersion),
zap.String("name", name),
zap.String("port", port))
ips, err := au.resolver.LookupIP(r.Context(), ipVersion, name) ips, err := au.resolver.LookupIP(r.Context(), ipVersion, name)
if err != nil { if err != nil {
return nil, err return nil, err
@ -350,6 +358,8 @@ func (au AUpstreams) GetUpstreams(r *http.Request) ([]*Upstream, error) {
upstreams := make([]Upstream, len(ips)) upstreams := make([]Upstream, len(ips))
for i, ip := range ips { for i, ip := range ips {
au.logger.Debug("discovered A record",
zap.String("ip", ip.String()))
upstreams[i] = Upstream{ upstreams[i] = Upstream{
Dial: net.JoinHostPort(ip.String(), port), Dial: net.JoinHostPort(ip.String(), port),
} }