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util/slicesx: add package for generic slice functions, use

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Now that we're using rand.Shuffle in a few locations, create a generic
shuffle function and use it instead. While we're at it, move the
interleaveSlices function to the same package for use.

Signed-off-by: Andrew Dunham <andrew@du.nham.ca>
Change-Id: I0b00920e5b3eea846b6cedc30bd34d978a049fd3
This commit is contained in:
Andrew Dunham
2023-03-03 13:15:56 -05:00
parent 88c7d19d54
commit 73fa7dd7af
9 changed files with 121 additions and 46 deletions
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4
cmd/derper/bootstrap_dns.go
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@@ -8,13 +8,13 @@ import (
"encoding/json"
"expvar"
"log"
"math/rand"
"net"
"net/http"
"strings"
"time"
"tailscale.com/syncs"
"tailscale.com/util/slicesx"
)
const refreshTimeout = time.Minute
@@ -57,7 +57,7 @@ func refreshBootstrapDNS() {
// to IPv6
for k := range dnsEntries {
ips := dnsEntries[k]
rand.Shuffle(len(ips), func(i, j int) { ips[i], ips[j] = ips[j], ips[i] })
slicesx.Shuffle(ips)
dnsEntries[k] = ips
}
j, err := json.MarshalIndent(dnsEntries, "", "\t")

1
cmd/derper/depaware.txt
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@@ -87,6 +87,7 @@ tailscale.com/cmd/derper dependencies: (generated by github.com/tailscale/depawa
tailscale.com/util/multierr from tailscale.com/health
tailscale.com/util/set from tailscale.com/health
tailscale.com/util/singleflight from tailscale.com/net/dnscache
tailscale.com/util/slicesx from tailscale.com/cmd/derper+
tailscale.com/util/vizerror from tailscale.com/tsweb
W 💣 tailscale.com/util/winutil from tailscale.com/hostinfo+
tailscale.com/version from tailscale.com/derp+

1
cmd/tailscale/depaware.txt
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@@ -122,6 +122,7 @@ tailscale.com/cmd/tailscale dependencies: (generated by github.com/tailscale/dep
tailscale.com/util/quarantine from tailscale.com/cmd/tailscale/cli
tailscale.com/util/set from tailscale.com/health+
tailscale.com/util/singleflight from tailscale.com/net/dnscache
tailscale.com/util/slicesx from tailscale.com/net/dnscache+
💣 tailscale.com/util/winutil from tailscale.com/hostinfo+
tailscale.com/version from tailscale.com/cmd/tailscale/cli+
tailscale.com/version/distro from tailscale.com/cmd/tailscale/cli+

1
cmd/tailscaled/depaware.txt
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@@ -305,6 +305,7 @@ tailscale.com/cmd/tailscaled dependencies: (generated by github.com/tailscale/de
tailscale.com/util/racebuild from tailscale.com/logpolicy
tailscale.com/util/set from tailscale.com/health+
tailscale.com/util/singleflight from tailscale.com/control/controlclient+
tailscale.com/util/slicesx from tailscale.com/net/dnscache+
tailscale.com/util/systemd from tailscale.com/control/controlclient+
tailscale.com/util/uniq from tailscale.com/wgengine/magicsock+
tailscale.com/util/vizerror from tailscale.com/tsweb