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Merge pull request #8974 from hashicorp/dnephin/grpc-counter-metrics 

agent/grpc: add counter metrics
This commit is contained in:
Daniel Nephin 2020-10-27 17:10:05 -04:00 committed by GitHub
parent c82d6aa4ff 62c9124011
commit 1a5af13fce
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GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 21 additions and 9 deletions
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10
agent/grpc/stats.go
View File

@ -36,7 +36,7 @@ func (c *statsHandler) HandleRPC(_ context.Context, s stats.RPCStats) {
}
switch s.(type) {
case *stats.InHeader:
c.metrics.IncrCounter([]string{"grpc", label, "request"}, 1)
c.metrics.IncrCounter([]string{"grpc", label, "request", "count"}, 1)
}
}
@ -56,11 +56,12 @@ func (c *statsHandler) HandleConn(_ context.Context, s stats.ConnStats) {
switch s.(type) {
case *stats.ConnBegin:
count = atomic.AddUint64(&c.activeConns, 1)
c.metrics.IncrCounter([]string{"grpc", label, "connection", "count"}, 1)
case *stats.ConnEnd:
// Decrement!
count = atomic.AddUint64(&c.activeConns, ^uint64(0))
}
c.metrics.SetGauge([]string{"grpc", label, "active_conns"}, float32(count))
c.metrics.SetGauge([]string{"grpc", label, "connections"}, float32(count))
}
type activeStreamCounter struct {
@ -79,10 +80,11 @@ func (i *activeStreamCounter) Intercept(
handler grpc.StreamHandler,
) error {
count := atomic.AddUint64(&i.count, 1)
i.metrics.SetGauge([]string{"grpc", "server", "active_streams"}, float32(count))
i.metrics.SetGauge([]string{"grpc", "server", "streams"}, float32(count))
i.metrics.IncrCounter([]string{"grpc", "server", "stream", "count"}, 1)
defer func() {
count := atomic.AddUint64(&i.count, ^uint64(0))
i.metrics.SetGauge([]string{"grpc", "server", "active_streams"}, float32(count))
i.metrics.SetGauge([]string{"grpc", "server", "streams"}, float32(count))
}()
return handler(srv, ss)

12
agent/grpc/stats_test.go
View File

@ -80,15 +80,17 @@ func TestHandler_EmitsStats(t *testing.T) {
cmpMetricCalls := cmp.AllowUnexported(metricCall{})
expectedGauge := []metricCall{
{key: []string{"testing", "grpc", "server", "active_conns"}, val: 1},
{key: []string{"testing", "grpc", "server", "active_streams"}, val: 1},
{key: []string{"testing", "grpc", "server", "active_conns"}, val: 0},
{key: []string{"testing", "grpc", "server", "active_streams"}, val: 0},
{key: []string{"testing", "grpc", "server", "connections"}, val: 1},
{key: []string{"testing", "grpc", "server", "streams"}, val: 1},
{key: []string{"testing", "grpc", "server", "connections"}, val: 0},
{key: []string{"testing", "grpc", "server", "streams"}, val: 0},
}
assertDeepEqual(t, expectedGauge, sink.gaugeCalls, cmpMetricCalls)
expectedCounter := []metricCall{
{key: []string{"testing", "grpc", "server", "request"}, val: 1},
{key: []string{"testing", "grpc", "server", "connection", "count"}, val: 1},
{key: []string{"testing", "grpc", "server", "request", "count"}, val: 1},
{key: []string{"testing", "grpc", "server", "stream", "count"}, val: 1},
}
assertDeepEqual(t, expectedCounter, sink.incrCounterCalls, cmpMetricCalls)
}

8
website/pages/docs/agent/telemetry.mdx
View File

@ -263,6 +263,14 @@ These metrics are used to monitor the health of the Consul servers.
| `consul.session_ttl.invalidate` | This measures the time spent invalidating an expired session. | ms | timer |
| `consul.txn.apply` | This measures the time spent applying a transaction operation. | ms | timer |
| `consul.txn.read` | This measures the time spent returning a read transaction. | ms | timer |
| `consul.grpc.client.request.count` | This metric counts the number of gRPC requests made by the client agent to a Consul server. | requests | counter |
| `consul.grpc.client.connect.count` | This metric counts the number of new gRPC connections opened by the client agent to a Consul server. | connections | counter |
| `consul.grpc.client.connections` | This metric measures the number of active gRPC connections open from the client agent to any Consul servers. | connections | gauge |
| `consul.grpc.server.request.count` | This metric counts the number of gRPC requests received by the server. | requests | counter |
| `consul.grpc.server.connect.count` | This metric counts the number of new gRPC connections received by the server. | connections | counter |
| `consul.grpc.server.connections` | This metric measures the number of active gRPC connections open on the server. | connections | gauge |
| `consul.grpc.server.stream.count` | This metric counts the number of new gRPC streams received by the server. | streams | counter |
| `consul.grpc.server.streams` | This metric measures the number of active gRPC streams handled by the server. | streams | guage |
## Cluster Health