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add WithStaleTimeout Option function.

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add a trace level log when a session gets deleted.
This commit is contained in:
onyx-and-iris 2024-10-19 21:19:03 +01:00
parent 51f22f480b
commit 64c1df645d
1 changed files with 29 additions and 4 deletions
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33
pkg/udpproxy/udpproxy.go
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@ -8,6 +8,21 @@ import (
log "github.com/sirupsen/logrus" log "github.com/sirupsen/logrus"
) )
// Option is a functional option type that allows us to configure the Client.
type Option func(*Client)
// WithStaleTimeout is a functional option to set the stale session timeout
func WithStaleTimeout(timeout time.Duration) Option {
return func(c *Client) {
if timeout < time.Minute {
log.Warnf("cannot set stale session timeout to less than 1 minute.. defaulting to 5 minutes")
return
}
c.timeout = timeout
}
}
type Client struct { type Client struct {
laddr *net.UDPAddr laddr *net.UDPAddr
raddr *net.UDPAddr raddr *net.UDPAddr
@ -16,9 +31,11 @@ type Client struct {
mutex sync.RWMutex mutex sync.RWMutex
sessions map[string]*session sessions map[string]*session
timeout time.Duration
} }
func New(port, target string) (*Client, error) { func New(port, target string, options ...Option) (*Client, error) {
laddr, err := net.ResolveUDPAddr("udp", port) laddr, err := net.ResolveUDPAddr("udp", port)
if err != nil { if err != nil {
return nil, err return nil, err
@ -29,12 +46,19 @@ func New(port, target string) (*Client, error) {
return nil, err return nil, err
} }
return &Client{ c := &Client{
laddr: laddr, laddr: laddr,
raddr: raddr, raddr: raddr,
mutex: sync.RWMutex{}, mutex: sync.RWMutex{},
sessions: map[string]*session{}, sessions: map[string]*session{},
}, nil timeout: 5 * time.Minute,
}
for _, o := range options {
o(c)
}
return c, nil
} }
func (c *Client) ListenAndServe() error { func (c *Client) ListenAndServe() error {
@ -76,8 +100,9 @@ func (c *Client) pruneSessions() {
for range ticker.C { for range ticker.C {
for _, session := range c.sessions { for _, session := range c.sessions {
c.mutex.RLock() c.mutex.RLock()
if time.Since(session.updateTime) > time.Minute*5 { if time.Since(session.updateTime) > c.timeout {
delete(c.sessions, session.caddr.String()) delete(c.sessions, session.caddr.String())
log.Tracef("session for %s deleted", session.caddr)
} }
c.mutex.RUnlock() c.mutex.RUnlock()
} }