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tailscale/cmd
Brad Fitzpatrick 36b1df1241 cmd/tailscale/cli: add --watch flag to "debug metrics" subcommand
This adds a new --watch flag that prints out a block of metric changes
every second, if anything changed.

Example output:

magicsock_disco_recv_ping    +1 => 254
magicsock_disco_recv_pong    +1 => 218
magicsock_disco_recv_udp     +2 => 472
magicsock_disco_send_udp     +2 => 536
magicsock_disco_sent_udp     +2 => 536
magicsock_recv_data_ipv6     +1 => 82
magicsock_send_data          +1 => 86
magicsock_send_udp           +3 => 620

magicsock_recv_data_ipv6    +1 => 83
magicsock_send_data         +1 => 87
magicsock_send_udp          +1 => 621

magicsock_disco_recv_ping    +1 => 255
magicsock_disco_recv_pong    +1 => 219
magicsock_disco_recv_udp     +2 => 474
magicsock_disco_send_udp     +2 => 538
magicsock_disco_sent_udp     +2 => 538
magicsock_recv_data_ipv6     +1 => 84
magicsock_send_data          +1 => 88
magicsock_send_udp           +3 => 624

magicsock_recv_data_ipv6    +1 => 85
magicsock_send_data         +1 => 89
magicsock_send_udp          +1 => 625

controlclient_map_response_map          +1 => 207
controlclient_map_response_map_delta    +1 => 204
controlclient_map_response_message      +1 => 275
magicsock_disco_recv_ping               +3 => 258
magicsock_disco_recv_pong               +2 => 221
magicsock_disco_recv_udp                +5 => 479
magicsock_disco_send_derp               +1 => 6
magicsock_disco_send_udp                +7 => 545
magicsock_disco_sent_derp               +1 => 6
magicsock_disco_sent_udp                +7 => 545
magicsock_recv_data_ipv6                +1 => 86
magicsock_send_data                     +1 => 90
magicsock_send_derp                     +1 => 12
magicsock_send_derp_queued              +1 => 12
magicsock_send_udp                      +8 => 633

Updates #3307

Change-Id: I5ac2511e3ad24fa1e6ea958c3946fecebe4f79a7
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
..
addlicense cmd/addlicense: add command to add licenseheaders to generated code 3 years ago
cloner cmd/cloner: mangle "go:generate" in cloner.go 3 years ago
derper cmd/derper: support custom TLS port when in manual mode (#3231) 3 years ago
derpprobe derp: use new node key type. 3 years ago
hello all: adapt to opaque netaddr types 3 years ago
mkpkg cmd/mkpkg: allow zero files in a package. 3 years ago
speedtest cmd: upgrade to ffcli v3 3 years ago
tailscale cmd/tailscale/cli: add --watch flag to "debug metrics" subcommand 3 years ago
tailscaled go.mod: update wireguard-go to pick up roaming toggle 3 years ago
testcontrol cmd/testcontrol: add test control server 3 years ago
tsshd all: gofmt with Go 1.17 3 years ago