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appc: track metrics for route info storing

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Track how often we're writing state and how many routes we're writing.

Updates #11008

Signed-off-by: Fran Bull <fran@tailscale.com>
This commit is contained in:
Fran Bull
2024-07-12 07:08:47 -07:00
committed by franbull
parent 5d61d1c7b0
commit 380a3a0834
2 changed files with 72 additions and 0 deletions
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33
appc/appconnector_test.go
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@@ -15,6 +15,7 @@ import (
"golang.org/x/net/dns/dnsmessage"
"tailscale.com/appc/appctest"
"tailscale.com/tstest"
"tailscale.com/util/clientmetric"
"tailscale.com/util/mak"
"tailscale.com/util/must"
)
@@ -569,3 +570,35 @@ func TestRateLogger(t *testing.T) {
t.Fatalf("wasCalled: got false, want true")
}
}
func TestRouteStoreMetrics(t *testing.T) {
metricStoreRoutes(1, 1)
metricStoreRoutes(1, 1) // the 1 buckets value should be 2
metricStoreRoutes(5, 5) // the 5 buckets value should be 1
metricStoreRoutes(6, 6) // the 10 buckets value should be 1
metricStoreRoutes(10001, 10001) // the over buckets value should be 1
wanted := map[string]int64{
"appc_store_routes_n_routes_1": 2,
"appc_store_routes_rate_1": 2,
"appc_store_routes_n_routes_5": 1,
"appc_store_routes_rate_5": 1,
"appc_store_routes_n_routes_10": 1,
"appc_store_routes_rate_10": 1,
"appc_store_routes_n_routes_over": 1,
"appc_store_routes_rate_over": 1,
}
for _, x := range clientmetric.Metrics() {
if x.Value() != wanted[x.Name()] {
t.Errorf("%s: want: %d, got: %d", x.Name(), wanted[x.Name()], x.Value())
}
}
}
func TestMetricBucketsAreSorted(t *testing.T) {
if !slices.IsSorted(metricStoreRoutesRateBuckets) {
t.Errorf("metricStoreRoutesRateBuckets must be in order")
}
if !slices.IsSorted(metricStoreRoutesNBuckets) {
t.Errorf("metricStoreRoutesNBuckets must be in order")
}
}