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Add watchtower client number of backup metrics #120
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563a08e
mod: upgrade lnd and lndclient dependencies
Jontified 13ae20f
collectors: fix spelling mistake in comment
Jontified 74c5a71
log: Add watchtower client logger
Jontified a419bdf
collectors: add wt_client_collector.go
Jontified 125bea3
collectors: instantiate wtclientcollector
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,105 @@ | ||
| package collectors | ||
|
|
||
| import ( | ||
| "context" | ||
| "encoding/hex" | ||
| "fmt" | ||
| "strings" | ||
|
|
||
| "github.com/lightninglabs/lndclient" | ||
| "github.com/prometheus/client_golang/prometheus" | ||
| ) | ||
|
|
||
| // WtClientCollector is a collector that will export watchtower client related | ||
| // metrics. | ||
| type WtClientCollector struct { | ||
| lnd *lndclient.LndServices | ||
|
|
||
| numBackupsDesc *prometheus.Desc | ||
| numPendingBackupsDesc *prometheus.Desc | ||
|
|
||
| // errChan is a channel that we send any errors that we encounter into. | ||
| // This channel should be buffered so that it does not block sends. | ||
| errChan chan<- error | ||
| } | ||
|
|
||
| // NewWalletCollector returns a new instance of the WalletCollector. | ||
| func NewWtClientCollector(lnd *lndclient.LndServices, | ||
| errChan chan<- error) *WtClientCollector { | ||
|
|
||
| return &WtClientCollector{ | ||
| lnd: lnd, | ||
| numBackupsDesc: prometheus.NewDesc( | ||
| "lnd_wt_client_num_backups", | ||
| "watchtower client number of backups", | ||
| []string{ | ||
| "tower_pubkey", | ||
| }, nil, | ||
| ), | ||
| numPendingBackupsDesc: prometheus.NewDesc( | ||
| "lnd_wt_client_num_pending_backups", | ||
| "watchtower client number of pending backups", | ||
| []string{ | ||
| "tower_pubkey", | ||
| }, nil, | ||
| ), | ||
|
|
||
| errChan: errChan, | ||
| } | ||
| } | ||
|
|
||
| // Describe sends the super-set of all possible descriptors of metrics | ||
| // collected by this Collector to the provided channel and returns once the | ||
| // last descriptor has been sent. | ||
| // | ||
| // NOTE: Part of the prometheus.Collector interface. | ||
| func (c *WtClientCollector) Describe(ch chan<- *prometheus.Desc) { | ||
| ch <- c.numBackupsDesc | ||
| ch <- c.numPendingBackupsDesc | ||
| } | ||
|
|
||
| // Collect is called by the Prometheus registry when collecting metrics. | ||
| // | ||
| // NOTE: Part of the prometheus.Collector interface. | ||
| func (c *WtClientCollector) Collect(ch chan<- prometheus.Metric) { | ||
| towers, err := c.lnd.WtClient.ListTowers( | ||
| context.Background(), true, false, | ||
| ) | ||
| if err != nil { | ||
| // If the watchtower client is not active, we'll just return. | ||
| if strings.Contains( | ||
| err.Error(), "watchtower client not active", | ||
| ) { | ||
|
|
||
| watchtowerLogger.Debug("Watchtower client not active") | ||
| return | ||
| } | ||
|
|
||
| c.errChan <- fmt.Errorf("WtClientCollector ListTowers failed "+ | ||
| "with: %v", err) | ||
| return | ||
| } | ||
|
|
||
| for _, tower := range towers { | ||
| pubkey := hex.EncodeToString(tower.Pubkey) | ||
| var ( | ||
| numBackups uint32 | ||
| numPendingBackups uint32 | ||
| ) | ||
| for _, sessionInfo := range tower.SessionInfo { | ||
| for _, session := range sessionInfo.Sessions { | ||
| numBackups += session.NumBackups | ||
| numPendingBackups += session.NumPendingBackups | ||
| } | ||
| } | ||
|
|
||
| ch <- prometheus.MustNewConstMetric( | ||
| c.numBackupsDesc, prometheus.GaugeValue, | ||
| float64(numBackups), pubkey, | ||
| ) | ||
| ch <- prometheus.MustNewConstMetric( | ||
| c.numPendingBackupsDesc, prometheus.GaugeValue, | ||
| float64(numPendingBackups), pubkey, | ||
| ) | ||
| } | ||
| } | ||
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