tailscale/net
Andrea Gottardo a8ee83e2c5
health: begin work to use structured health warnings instead of strings, pipe changes into ipn.Notify (#12406)
Updates tailscale/tailscale#4136

This PR is the first round of work to move from encoding health warnings as strings and use structured data instead. The current health package revolves around the idea of Subsystems. Each subsystem can have (or not have) a Go error associated with it. The overall health of the backend is given by the concatenation of all these errors.

This PR polishes the concept of Warnable introduced by @bradfitz a few weeks ago. Each Warnable is a component of the backend (for instance, things like 'dns' or 'magicsock' are Warnables). Each Warnable has a unique identifying code. A Warnable is an entity we can warn the user about, by setting (or unsetting) a WarningState for it. Warnables have:

- an identifying Code, so that the GUI can track them as their WarningStates come and go
- a Title, which the GUIs can use to tell the user what component of the backend is broken
- a Text, which is a function that is called with a set of Args to generate a more detailed error message to explain the unhappy state

Additionally, this PR also begins to send Warnables and their WarningStates through LocalAPI to the clients, using ipn.Notify messages. An ipn.Notify is only issued when a warning is added or removed from the Tracker.

In a next PR, we'll get rid of subsystems entirely, and we'll start using structured warnings for all errors affecting the backend functionality.

Signed-off-by: Andrea Gottardo <andrea@gottardo.me>
2024-06-14 11:53:56 -07:00
..
art all: use Go 1.22 range-over-int 2024-04-16 15:32:38 -07:00
connstats all: use Go 1.22 range-over-int 2024-04-16 15:32:38 -07:00
dns health: begin work to use structured health warnings instead of strings, pipe changes into ipn.Notify (#12406) 2024-06-14 11:53:56 -07:00
dnscache net/dnscache: use parent context to perform lookup 2024-06-12 11:21:02 -07:00
dnsfallback tsd, ipnlocal, etc: add tsd.System.HealthTracker, start some plumbing 2024-04-25 22:13:04 -07:00
flowtrack all: update copyright and license headers 2023-01-27 15:36:29 -08:00
ktimeout net/ktimeout: add a package to set TCP user timeout 2024-02-20 10:49:58 -08:00
memnet net/memnet: export the network name (#9111) 2023-08-28 11:43:51 -07:00
netaddr all: update copyright and license headers 2023-01-27 15:36:29 -08:00
netcheck net/netcheck: fix probeProto.String result for IPv6 probes 2024-06-06 08:43:58 -07:00
neterror net/neterror, wgengine/magicsock: use UDP GSO and GRO on Linux (#7791) 2023-04-04 16:32:16 -07:00
netkernelconf ipn/{ipnlocal,localapi},net/netkernelconf,client/tailscale,cmd/containerboot: optionally enable UDP GRO forwarding for containers (#12410) 2024-06-10 19:19:03 +01:00
netknob all: update copyright and license headers 2023-01-27 15:36:29 -08:00
netmon net/netmon: remove spammy log statements (#11953) 2024-05-01 12:02:16 -04:00
netns net/{interfaces,netmon}, all: merge net/interfaces package into net/netmon 2024-04-28 07:34:52 -07:00
netstat net/{netns,netstat}: use new x/sys/cpu.IsBigEndian 2023-02-02 07:41:49 -08:00
netutil net/netmon, add: add netmon.State type alias of interfaces.State 2024-04-28 07:34:52 -07:00
packet all: use Go 1.22 range-over-int 2024-04-16 15:32:38 -07:00
ping net/ping: fix ICMP echo code field to 0 2023-09-15 17:08:39 -07:00
portmapper all: use math/rand/v2 more 2024-06-05 15:24:04 -07:00
proxymux all: cleanup unused code, part 1 (#10661) 2023-12-20 14:50:30 -08:00
routetable net/{interfaces,netmon}, all: merge net/interfaces package into net/netmon 2024-04-28 07:34:52 -07:00
socks5 net/socks5: add password auth support 2023-03-05 14:08:34 -08:00
sockstats net/{interfaces,netmon}, all: merge net/interfaces package into net/netmon 2024-04-28 07:34:52 -07:00
speedtest all: update copyright and license headers 2023-01-27 15:36:29 -08:00
stun derp/xdp,cmd/xdpderper: initial skeleton (#12390) 2024-06-14 08:45:24 -07:00
stunserver all: use Go 1.22 range-over-int 2024-04-16 15:32:38 -07:00
tcpinfo all: use Go 1.22 range-over-int 2024-04-16 15:32:38 -07:00
tlsdial tsd, ipnlocal, etc: add tsd.System.HealthTracker, start some plumbing 2024-04-25 22:13:04 -07:00
tsaddr types/views: remove duplicate SliceContainsFunc 2024-05-03 19:19:33 -07:00
tsdial tsnet,wgengine/netstack: add ListenPacket and tests 2024-06-02 14:14:24 -07:00
tshttpproxy all: use Go 1.22 range-over-int 2024-04-16 15:32:38 -07:00
tstun net/tstun: do SNAT after filterPacketOutboundToWireGuard 2024-05-14 17:19:09 -04:00
wsconn net/wsconn: accept a remote addr string and plumb it through 2023-08-29 16:57:16 -07:00