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feature/condlite/expvar: add expvar stub package when metrics not needed

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Saves ~53 KB from the min build.

Updates #12614

Change-Id: I73f9544a9feea06027c6ebdd222d712ada851299
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This commit is contained in:
Brad Fitzpatrick 2025-10-06 13:10:58 -07:00 committed by Brad Fitzpatrick
parent 192f8d2804
commit 059f53e67a
10 changed files with 37 additions and 10 deletions
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1
cmd/k8s-operator/depaware.txt
View File

@ -701,6 +701,7 @@ tailscale.com/cmd/k8s-operator dependencies: (generated by github.com/tailscale/
tailscale.com/feature from tailscale.com/ipn/ipnext+
tailscale.com/feature/buildfeatures from tailscale.com/wgengine/magicsock+
tailscale.com/feature/c2n from tailscale.com/tsnet
tailscale.com/feature/condlite/expvar from tailscale.com/wgengine/magicsock
tailscale.com/feature/condregister/oauthkey from tailscale.com/tsnet
tailscale.com/feature/condregister/portmapper from tailscale.com/tsnet
tailscale.com/feature/condregister/useproxy from tailscale.com/tsnet

8
cmd/tailscaled/depaware-min.txt
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@ -54,6 +54,7 @@ tailscale.com/cmd/tailscaled dependencies: (generated by github.com/tailscale/de
tailscale.com/envknob/featureknob from tailscale.com/ipn/ipnlocal
tailscale.com/feature from tailscale.com/cmd/tailscaled+
tailscale.com/feature/buildfeatures from tailscale.com/cmd/tailscaled+
tailscale.com/feature/condlite/expvar from tailscale.com/wgengine/magicsock
tailscale.com/feature/condregister from tailscale.com/cmd/tailscaled
tailscale.com/feature/condregister/portmapper from tailscale.com/feature/condregister
tailscale.com/feature/condregister/useproxy from tailscale.com/feature/condregister
@ -315,10 +316,9 @@ tailscale.com/cmd/tailscaled dependencies: (generated by github.com/tailscale/de
encoding/base64 from encoding/json+
encoding/binary from compress/gzip+
encoding/hex from crypto/x509+
encoding/json from expvar+
encoding/json from github.com/gaissmai/bart+
encoding/pem from crypto/tls+
errors from bufio+
expvar from tailscale.com/wgengine/magicsock
flag from tailscale.com/cmd/tailscaled+
fmt from compress/flate+
hash from crypto+
@ -369,7 +369,7 @@ tailscale.com/cmd/tailscaled dependencies: (generated by github.com/tailscale/de
io from bufio+
io/fs from crypto/x509+
iter from bytes+
log from expvar+
log from github.com/klauspost/compress/zstd+
log/internal from log
maps from crypto/x509+
math from compress/flate+
@ -381,7 +381,7 @@ tailscale.com/cmd/tailscaled dependencies: (generated by github.com/tailscale/de
mime/multipart from net/http
mime/quotedprintable from mime/multipart
net from crypto/tls+
net/http from expvar+
net/http from tailscale.com/cmd/tailscaled+
net/http/httptrace from net/http+
net/http/internal from net/http
net/http/internal/ascii from net/http

8
cmd/tailscaled/depaware-minbox.txt
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@ -74,6 +74,7 @@ tailscale.com/cmd/tailscaled dependencies: (generated by github.com/tailscale/de
tailscale.com/envknob/featureknob from tailscale.com/ipn/ipnlocal
tailscale.com/feature from tailscale.com/cmd/tailscaled+
tailscale.com/feature/buildfeatures from tailscale.com/ipn/ipnlocal+
tailscale.com/feature/condlite/expvar from tailscale.com/wgengine/magicsock
tailscale.com/feature/condregister from tailscale.com/cmd/tailscaled
tailscale.com/feature/condregister/oauthkey from tailscale.com/cmd/tailscale/cli
tailscale.com/feature/condregister/portmapper from tailscale.com/feature/condregister+
@ -345,10 +346,9 @@ tailscale.com/cmd/tailscaled dependencies: (generated by github.com/tailscale/de
encoding/base64 from encoding/json+
encoding/binary from compress/gzip+
encoding/hex from crypto/x509+
encoding/json from expvar+
encoding/json from github.com/gaissmai/bart+
encoding/pem from crypto/tls+
errors from bufio+
expvar from tailscale.com/wgengine/magicsock
flag from tailscale.com/cmd/tailscaled+
fmt from compress/flate+
hash from crypto+
@ -404,7 +404,7 @@ tailscale.com/cmd/tailscaled dependencies: (generated by github.com/tailscale/de
io/fs from crypto/x509+
io/ioutil from github.com/skip2/go-qrcode
iter from bytes+
log from expvar+
log from github.com/klauspost/compress/zstd+
log/internal from log
maps from crypto/x509+
math from compress/flate+
@ -416,7 +416,7 @@ tailscale.com/cmd/tailscaled dependencies: (generated by github.com/tailscale/de
mime/multipart from net/http
mime/quotedprintable from mime/multipart
net from crypto/tls+
net/http from expvar+
net/http from net/http/httputil+
net/http/httptrace from net/http+
net/http/httputil from tailscale.com/cmd/tailscale/cli
net/http/internal from net/http+

1
cmd/tailscaled/depaware.txt
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@ -278,6 +278,7 @@ tailscale.com/cmd/tailscaled dependencies: (generated by github.com/tailscale/de
tailscale.com/feature/c2n from tailscale.com/feature/condregister
tailscale.com/feature/capture from tailscale.com/feature/condregister
tailscale.com/feature/clientupdate from tailscale.com/feature/condregister
tailscale.com/feature/condlite/expvar from tailscale.com/wgengine/magicsock
tailscale.com/feature/condregister from tailscale.com/cmd/tailscaled
tailscale.com/feature/condregister/portmapper from tailscale.com/feature/condregister
tailscale.com/feature/condregister/useproxy from tailscale.com/feature/condregister

1
cmd/tailscaled/deps_test.go
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@ -282,6 +282,7 @@ func TestMinTailscaledWithCLI(t *testing.T) {
},
BadDeps: map[string]string{
"golang.org/x/net/http2": "unexpected x/net/http2 dep; tailscale/tailscale#17305",
"expvar": "unexpected expvar dep",
},
}.Check(t)
}

1
cmd/tsidp/depaware.txt
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@ -143,6 +143,7 @@ tailscale.com/cmd/tsidp dependencies: (generated by github.com/tailscale/depawar
tailscale.com/feature from tailscale.com/ipn/ipnext+
tailscale.com/feature/buildfeatures from tailscale.com/wgengine/magicsock+
tailscale.com/feature/c2n from tailscale.com/tsnet
tailscale.com/feature/condlite/expvar from tailscale.com/wgengine/magicsock
tailscale.com/feature/condregister/oauthkey from tailscale.com/tsnet
tailscale.com/feature/condregister/portmapper from tailscale.com/tsnet
tailscale.com/feature/condregister/useproxy from tailscale.com/tsnet

12
feature/condlite/expvar/expvar.go Normal file
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@ -0,0 +1,12 @@
// Copyright (c) Tailscale Inc & AUTHORS
// SPDX-License-Identifier: BSD-3-Clause
//go:build !(ts_omit_debug && ts_omit_clientmetrics && ts_omit_usermetrics)
// Package expvar contains type aliases for expvar types, to allow conditionally
// excluding the package from builds.
package expvar
import "expvar"
type Int = expvar.Int

11
feature/condlite/expvar/omit.go Normal file
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@ -0,0 +1,11 @@
// Copyright (c) Tailscale Inc & AUTHORS
// SPDX-License-Identifier: BSD-3-Clause
//go:build ts_omit_debug && ts_omit_clientmetrics && ts_omit_usermetrics
// excluding the package from builds.
package expvar
type Int int64
func (*Int) Add(int64) {}

1
tsnet/depaware.txt
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@ -139,6 +139,7 @@ tailscale.com/tsnet dependencies: (generated by github.com/tailscale/depaware)
tailscale.com/feature from tailscale.com/ipn/ipnext+
tailscale.com/feature/buildfeatures from tailscale.com/wgengine/magicsock+
tailscale.com/feature/c2n from tailscale.com/tsnet
tailscale.com/feature/condlite/expvar from tailscale.com/wgengine/magicsock
tailscale.com/feature/condregister/oauthkey from tailscale.com/tsnet
tailscale.com/feature/condregister/portmapper from tailscale.com/tsnet
tailscale.com/feature/condregister/useproxy from tailscale.com/tsnet

3
wgengine/magicsock/magicsock.go
View File

@ -11,7 +11,6 @@ import (
"context"
"encoding/binary"
"errors"
"expvar"
"fmt"
"io"
"net"
@ -29,11 +28,11 @@ import (
"github.com/tailscale/wireguard-go/device"
"go4.org/mem"
"golang.org/x/net/ipv6"
"tailscale.com/control/controlknobs"
"tailscale.com/disco"
"tailscale.com/envknob"
"tailscale.com/feature/buildfeatures"
"tailscale.com/feature/condlite/expvar"
"tailscale.com/health"
"tailscale.com/hostinfo"
"tailscale.com/ipn/ipnstate"