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Merge pull request #256 from nats-io/accountsz-metrics
Add accountz metrics
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,204 @@ | ||
| // Copyright 2022-2023 The NATS Authors | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| // Package collector has various collector utilities and implementations. | ||
| package collector | ||
|
|
||
| import ( | ||
| "net/http" | ||
| "sync" | ||
|
|
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| "github.com/prometheus/client_golang/prometheus" | ||
| ) | ||
|
|
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| func isAccstatzEndpoint(system, endpoint string) bool { | ||
| return system == CoreSystem && endpoint == "accstatz" | ||
| } | ||
|
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| type accstatzCollector struct { | ||
| sync.Mutex | ||
|
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| httpClient *http.Client | ||
| servers []*CollectedServer | ||
| accountMetrics *accountMetrics | ||
| } | ||
|
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| func newAccstatzCollector(system, endpoint string, servers []*CollectedServer) prometheus.Collector { | ||
| nc := &accstatzCollector{ | ||
| httpClient: http.DefaultClient, | ||
| accountMetrics: newAccountMetrics(system, endpoint), | ||
| } | ||
|
|
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| nc.servers = make([]*CollectedServer, len(servers)) | ||
| for i, s := range servers { | ||
| nc.servers[i] = &CollectedServer{ | ||
| ID: s.ID, | ||
| URL: s.URL + "/accstatz?unused=1", | ||
| } | ||
| } | ||
|
|
||
| return nc | ||
| } | ||
|
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| func (nc *accstatzCollector) Describe(ch chan<- *prometheus.Desc) { | ||
| nc.accountMetrics.Describe(ch) | ||
| } | ||
|
|
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| // Collect gathers the server accstatz metrics. | ||
| func (nc *accstatzCollector) Collect(ch chan<- prometheus.Metric) { | ||
| for _, server := range nc.servers { | ||
| var resp Accstatz | ||
| if err := getMetricURL(nc.httpClient, server.URL, &resp); err != nil { | ||
| Debugf("ignoring server %s: %v", server.ID, err) | ||
| continue | ||
| } | ||
|
|
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| for _, acc := range resp.Accounts { | ||
| nc.accountMetrics.Collect(server, acc, ch) | ||
| } | ||
| } | ||
| } | ||
|
|
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| // accountMetrics has all of the prometheus descriptors related to | ||
| // each of the accounts of the server being scraped. | ||
| type accountMetrics struct { | ||
| connections *prometheus.Desc | ||
| totalConnections *prometheus.Desc | ||
| numSubs *prometheus.Desc | ||
| leafNodes *prometheus.Desc | ||
| sentMsgs *prometheus.Desc | ||
| sentBytes *prometheus.Desc | ||
| receivedMsgs *prometheus.Desc | ||
| receivedBytes *prometheus.Desc | ||
| slowConsumers *prometheus.Desc | ||
| } | ||
|
|
||
| // newAccountMetrics initializes a new instance of accountMetrics. | ||
| func newAccountMetrics(system, endpoint string) *accountMetrics { | ||
| account := &accountMetrics{ | ||
| connections: prometheus.NewDesc( | ||
| prometheus.BuildFQName(system, endpoint, "current_connections"), | ||
| "current_connections", | ||
| []string{"server_id", "account"}, | ||
| nil), | ||
| totalConnections: prometheus.NewDesc( | ||
| prometheus.BuildFQName(system, endpoint, "total_connections"), | ||
| "total_connections", | ||
| []string{"server_id", "account"}, | ||
| nil), | ||
| numSubs: prometheus.NewDesc( | ||
| prometheus.BuildFQName(system, endpoint, "subscriptions"), | ||
| "subscriptions", | ||
| []string{"server_id", "account"}, | ||
| nil), | ||
| leafNodes: prometheus.NewDesc( | ||
| prometheus.BuildFQName(system, endpoint, "leaf_nodes"), | ||
| "leaf_nodes", | ||
| []string{"server_id", "account"}, | ||
| nil), | ||
| sentMsgs: prometheus.NewDesc( | ||
| prometheus.BuildFQName(system, endpoint, "sent_messages"), | ||
| "sent_messages", | ||
| []string{"server_id", "account"}, | ||
| nil), | ||
| sentBytes: prometheus.NewDesc( | ||
| prometheus.BuildFQName(system, endpoint, "sent_bytes"), | ||
| "sent_bytes", | ||
| []string{"server_id", "account"}, | ||
| nil), | ||
| receivedMsgs: prometheus.NewDesc( | ||
| prometheus.BuildFQName(system, endpoint, "received_messages"), | ||
| "received_messages", | ||
| []string{"server_id", "account"}, | ||
| nil), | ||
| receivedBytes: prometheus.NewDesc( | ||
| prometheus.BuildFQName(system, endpoint, "received_bytes"), | ||
| "received_bytes", | ||
| []string{"server_id", "account"}, | ||
| nil), | ||
| slowConsumers: prometheus.NewDesc( | ||
| prometheus.BuildFQName(system, endpoint, "slow_consumers"), | ||
| "slow_consumers", | ||
| []string{"server_id", "account"}, | ||
| nil), | ||
| } | ||
|
|
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| return account | ||
| } | ||
|
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| // Describe | ||
| func (am *accountMetrics) Describe(ch chan<- *prometheus.Desc) { | ||
| ch <- am.connections | ||
| ch <- am.totalConnections | ||
| ch <- am.numSubs | ||
| ch <- am.leafNodes | ||
| ch <- am.sentMsgs | ||
| ch <- am.sentBytes | ||
| ch <- am.receivedMsgs | ||
| ch <- am.receivedBytes | ||
| ch <- am.slowConsumers | ||
| } | ||
|
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| // Collect collects all the metrics about an account. | ||
| func (am *accountMetrics) Collect(server *CollectedServer, acc *Account, ch chan<- prometheus.Metric) { | ||
|
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| ch <- prometheus.MustNewConstMetric(am.connections, prometheus.GaugeValue, float64(acc.Conns), | ||
| server.ID, acc.Account) | ||
|
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| ch <- prometheus.MustNewConstMetric(am.totalConnections, prometheus.GaugeValue, float64(acc.TotalConns), | ||
| server.ID, acc.Account) | ||
|
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| ch <- prometheus.MustNewConstMetric(am.numSubs, prometheus.GaugeValue, float64(acc.NumSubs), | ||
| server.ID, acc.Account) | ||
|
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| ch <- prometheus.MustNewConstMetric(am.leafNodes, prometheus.GaugeValue, float64(acc.LeafNodes), | ||
| server.ID, acc.Account) | ||
|
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| ch <- prometheus.MustNewConstMetric(am.sentMsgs, prometheus.GaugeValue, float64(acc.Sent.Msgs), | ||
| server.ID, acc.Account) | ||
|
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| ch <- prometheus.MustNewConstMetric(am.sentBytes, prometheus.GaugeValue, float64(acc.Sent.Bytes), | ||
| server.ID, acc.Account) | ||
|
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| ch <- prometheus.MustNewConstMetric(am.receivedMsgs, prometheus.GaugeValue, float64(acc.Received.Msgs), | ||
| server.ID, acc.Account) | ||
|
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| ch <- prometheus.MustNewConstMetric(am.receivedBytes, prometheus.GaugeValue, float64(acc.Received.Bytes), | ||
| server.ID, acc.Account) | ||
|
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| ch <- prometheus.MustNewConstMetric(am.slowConsumers, prometheus.GaugeValue, float64(acc.SlowConsumers), | ||
| server.ID, acc.Account) | ||
| } | ||
|
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| // Accstatz output | ||
| type Accstatz struct { | ||
| Accounts []*Account `json:"account_statz"` | ||
| } | ||
|
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| // Account stats output | ||
| type Account struct { | ||
| Account string `json:"acc"` | ||
| Conns int `json:"conns"` | ||
| LeafNodes int `json:"leafnodes"` | ||
| TotalConns int `json:"total_conns"` | ||
| NumSubs uint32 `json:"num_subscriptions"` | ||
| Sent DataStats `json:"sent"` | ||
| Received DataStats `json:"received"` | ||
| SlowConsumers int64 `json:"slow_consumers"` | ||
| } | ||
|
|
||
| // DataStats output | ||
| type DataStats struct { | ||
| Msgs int64 `json:"msgs"` | ||
| Bytes int64 `json:"bytes"` | ||
| } |
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