forked from falcosecurity/falcosidekick
/
nats.go
55 lines (45 loc) · 1.44 KB
/
nats.go
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package outputs
import (
"encoding/json"
"log"
"regexp"
"strings"
nats "github.com/nats-io/nats.go"
"github.com/ir0njaw/falcosidekick/types"
)
var slugRegularExpression = regexp.MustCompile("[^a-z0-9]+")
// NatsPublish publishes event to NATS
func (c *Client) NatsPublish(falcopayload types.FalcoPayload) {
c.Stats.Nats.Add(Total, 1)
nc, err := nats.Connect(c.EndpointURL.String())
if err != nil {
c.setNatsErrorMetrics()
log.Printf("[ERROR] : NATS - %v\n", err)
return
}
defer nc.Flush()
defer nc.Close()
r := strings.Trim(slugRegularExpression.ReplaceAllString(strings.ToLower(falcopayload.Rule), "_"), "_")
j, err := json.Marshal(falcopayload)
if err != nil {
c.setStanErrorMetrics()
log.Printf("[ERROR] : STAN - %v\n", err.Error())
return
}
err = nc.Publish("falco."+strings.ToLower(falcopayload.Priority.String())+"."+r, j)
if err != nil {
c.setNatsErrorMetrics()
log.Printf("[ERROR] : NATS - %v\n", err)
return
}
go c.CountMetric("outputs", 1, []string{"output:nats", "status:ok"})
c.Stats.Nats.Add(OK, 1)
c.PromStats.Outputs.With(map[string]string{"destination": "nats", "status": OK}).Inc()
log.Printf("[INFO] : NATS - Publish OK\n")
}
// setNatsErrorMetrics set the error stats
func (c *Client) setNatsErrorMetrics() {
go c.CountMetric(Outputs, 1, []string{"output:nats", "status:error"})
c.Stats.Nats.Add(Error, 1)
c.PromStats.Outputs.With(map[string]string{"destination": "nats", "status": Error}).Inc()
}