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net/netns, net/dns/resolver, etc: make netmon required in most places

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The goal is to move more network state accessors to netmon.Monitor
where they can be cheaper/cached. But first (this change and others)
we need to make sure the one netmon.Monitor is plumbed everywhere.

Some notable bits:

* tsdial.NewDialer is added, taking a now-required netmon

* because a tsdial.Dialer always has a netmon, anything taking both
  a Dialer and a NetMon is now redundant; take only the Dialer and
  get the NetMon from that if/when needed.

* netmon.NewStatic is added, primarily for tests

Updates tailscale/corp#10910
Updates tailscale/corp#18960
Updates #7967
Updates #3299

Change-Id: I877f9cb87618c4eb037cee098241d18da9c01691
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This commit is contained in:
Brad Fitzpatrick
2024-04-26 22:06:20 -07:00
committed by Brad Fitzpatrick
parent 4f73a26ea5
commit 3672f29a4e
34 changed files with 228 additions and 86 deletions
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7
log/sockstatlog/logger.go
View File

@@ -93,11 +93,16 @@ func SockstatLogID(logID logid.PublicID) logid.PrivateID {
// On platforms that do not support sockstat logging, a nil Logger will be returned.
// The returned Logger is not yet enabled, and must be shut down with Shutdown when it is no longer needed.
// Logs will be uploaded to the log server using a new log ID derived from the provided backend logID.
// The netMon parameter is optional; if non-nil it's used to do faster interface lookups.
//
// The netMon parameter is optional. It should be specified in environments where
// Tailscaled is manipulating the routing table.
func NewLogger(logdir string, logf logger.Logf, logID logid.PublicID, netMon *netmon.Monitor, health *health.Tracker) (*Logger, error) {
if !sockstats.IsAvailable {
return nil, nil
}
if netMon == nil {
netMon = netmon.NewStatic()
}
if err := os.MkdirAll(logdir, 0755); err != nil && !os.IsExist(err) {
return nil, err