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tsweb: switch to fastuuid for request ID generation

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Request ID generation appears prominently in some services cumulative
allocation rate, and while this does not eradicate this issue (the API
still makes UUID objects), it does improve the overhead of this API and
reduce the amount of garbage that it produces.

Updates tailscale/corp#18266
Updates tailscale/corp#19054

Signed-off-by: James Tucker <james@tailscale.com>
This commit is contained in:
James Tucker 2024-04-09 13:06:48 -07:00 committed by James Tucker
parent d0f3fa7d7e
commit 8fa3026614
3 changed files with 8 additions and 4 deletions
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4
cmd/derper/depaware.txt
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@ -17,7 +17,7 @@ tailscale.com/cmd/derper dependencies: (generated by github.com/tailscale/depawa
L github.com/google/nftables/expr from github.com/google/nftables+
L github.com/google/nftables/internal/parseexprfunc from github.com/google/nftables+
L github.com/google/nftables/xt from github.com/google/nftables/expr+
github.com/google/uuid from tailscale.com/tsweb
github.com/google/uuid from tailscale.com/util/fastuuid
github.com/hdevalence/ed25519consensus from tailscale.com/tka
L github.com/josharian/native from github.com/mdlayher/netlink+
L 💣 github.com/jsimonetti/rtnetlink from tailscale.com/net/interfaces+
@ -143,6 +143,7 @@ tailscale.com/cmd/derper dependencies: (generated by github.com/tailscale/depawa
tailscale.com/util/ctxkey from tailscale.com/tsweb+
L 💣 tailscale.com/util/dirwalk from tailscale.com/metrics
tailscale.com/util/dnsname from tailscale.com/hostinfo+
tailscale.com/util/fastuuid from tailscale.com/tsweb
tailscale.com/util/httpm from tailscale.com/client/tailscale
tailscale.com/util/lineread from tailscale.com/hostinfo+
L tailscale.com/util/linuxfw from tailscale.com/net/netns
@ -250,6 +251,7 @@ tailscale.com/cmd/derper dependencies: (generated by github.com/tailscale/depawa
math/big from crypto/dsa+
math/bits from compress/flate+
math/rand from github.com/mdlayher/netlink+
math/rand/v2 from tailscale.com/util/fastuuid
mime from github.com/prometheus/common/expfmt+
mime/multipart from net/http
mime/quotedprintable from mime/multipart

4
cmd/stund/depaware.txt
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@ -2,7 +2,7 @@ tailscale.com/cmd/stund dependencies: (generated by github.com/tailscale/depawar
github.com/beorn7/perks/quantile from github.com/prometheus/client_golang/prometheus
💣 github.com/cespare/xxhash/v2 from github.com/prometheus/client_golang/prometheus
github.com/google/uuid from tailscale.com/tsweb
github.com/google/uuid from tailscale.com/util/fastuuid
💣 github.com/prometheus/client_golang/prometheus from tailscale.com/tsweb/promvarz
github.com/prometheus/client_golang/prometheus/internal from github.com/prometheus/client_golang/prometheus
github.com/prometheus/client_model/go from github.com/prometheus/client_golang/prometheus+
@ -65,6 +65,7 @@ tailscale.com/cmd/stund dependencies: (generated by github.com/tailscale/depawar
tailscale.com/util/ctxkey from tailscale.com/tsweb+
L 💣 tailscale.com/util/dirwalk from tailscale.com/metrics
tailscale.com/util/dnsname from tailscale.com/tailcfg
tailscale.com/util/fastuuid from tailscale.com/tsweb
tailscale.com/util/lineread from tailscale.com/version/distro
tailscale.com/util/nocasemaps from tailscale.com/types/ipproto
tailscale.com/util/slicesx from tailscale.com/tailcfg
@ -151,6 +152,7 @@ tailscale.com/cmd/stund dependencies: (generated by github.com/tailscale/depawar
math/big from crypto/dsa+
math/bits from compress/flate+
math/rand from math/big+
math/rand/v2 from tailscale.com/util/fastuuid
mime from github.com/prometheus/common/expfmt+
mime/multipart from net/http
mime/quotedprintable from mime/multipart

4
tsweb/request_id.go
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@ -7,8 +7,8 @@
"context"
"net/http"
"github.com/google/uuid"
"tailscale.com/util/ctxkey"
"tailscale.com/util/fastuuid"
)
// RequestID is an opaque identifier for a HTTP request, used to correlate
@ -44,7 +44,7 @@ func GenerateRequestID() RequestID {
// REQ-1 indicates the version of the RequestID pattern. It is
// currently arbitrary but allows for forward compatible
// transitions if needed.
return RequestID("REQ-1" + uuid.NewString())
return RequestID("REQ-1" + fastuuid.NewUUID().String())
}
// SetRequestID is an HTTP middleware that injects a RequestID in the