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composer: use logrus hook instead of k8s sidecar

Browse source 
for splunk log forwarding
Fixes COMPOSER-2051
This commit is contained in:
Diaa Sami 2023-11-13 11:03:59 +01:00 • committed by Sanne Raymaekers
parent 6b6af41e1d
commit 6cfa26399f
9 changed files with 436 additions and 57 deletions
Download patch file Download diff file Expand all files Collapse all files

3
cmd/osbuild-composer/config.go
View file

@ -18,6 +18,9 @@ type ComposerConfigFile struct {
LogLevel string `toml:"log_level"`
LogFormat string `toml:"log_format"`
DNFJson string `toml:"dnf-json"`
SplunkHost string `env:"SPLUNK_HEC_HOST"`
SplunkPort string `env:"SPLUNK_HEC_PORT"`
SplunkToken string `env:"SPLUNK_HEC_TOKEN"`
}
type KojiAPIConfig struct {

11
cmd/osbuild-composer/main.go
View file

@ -1,10 +1,12 @@
package main
import (
"context"
"flag"
"os"
"github.com/coreos/go-systemd/activation"
slogger "github.com/osbuild/osbuild-composer/pkg/splunk_logger"
"github.com/sirupsen/logrus"
"github.com/sirupsen/logrus/hooks/syslog"
)
@ -60,6 +62,15 @@ func main() {
logrus.Fatalf("Error printing configuration: %v", err)
}
if config.SplunkHost != "" {
hook, err := slogger.NewSplunkHook(context.Background(), config.SplunkHost, config.SplunkPort, config.SplunkToken, "composer")
if err != nil {
panic(err)
}
logrus.AddHook(hook)
}
stateDir, ok := os.LookupEnv("STATE_DIRECTORY")
if !ok {
logrus.Fatal("STATE_DIRECTORY is not set. Is the service file missing StateDirectory=?")

1
go.mod
View file

@ -32,6 +32,7 @@ require (
github.com/openshift-online/ocm-sdk-go v0.1.385
github.com/oracle/oci-go-sdk/v54 v54.0.0
github.com/osbuild/images v0.18.0
github.com/osbuild/osbuild-composer/pkg/splunk_logger v0.0.0-20231117174845-e969a9dc3cd1
github.com/osbuild/pulp-client v0.1.0
github.com/prometheus/client_golang v1.17.0
github.com/segmentio/ksuid v1.0.4

2
go.sum
View file

@ -455,6 +455,8 @@ github.com/oracle/oci-go-sdk/v54 v54.0.0 h1:CDLjeSejv2aDpElAJrhKpi6zvT/zhZCZuXch
github.com/oracle/oci-go-sdk/v54 v54.0.0/go.mod h1:+t+yvcFGVp+3ZnztnyxqXfQDsMlq8U25faBLa+mqCMc=
github.com/osbuild/images v0.18.0 h1:I/tOO7DCECciJptrXVq+oykJI5dP1rwkzJqmf2rKuqw=
github.com/osbuild/images v0.18.0/go.mod h1:Zr+AkaX/Rpxyff6Zxh8kkwGKFtJsSukGo1Vv/j9HsxA=
github.com/osbuild/osbuild-composer/pkg/splunk_logger v0.0.0-20231117174845-e969a9dc3cd1 h1:UFEJIcPa46W8gtWgOYzriRKYyy1t6SWL0BI7fPTuVvc=
github.com/osbuild/osbuild-composer/pkg/splunk_logger v0.0.0-20231117174845-e969a9dc3cd1/go.mod h1:z+WA+dX6qMwc7fqY5jCzESDIlg4WR2sBQezxsoXv9Ik=
github.com/osbuild/pulp-client v0.1.0 h1:L0C4ezBJGTamN3BKdv+rKLuq/WxXJbsFwz/Hj7aEmJ8=
github.com/osbuild/pulp-client v0.1.0/go.mod h1:rd/MLdfwwO2cQI1s056h8z32zAi3Bo90XhlAAryIvWc=
github.com/otiai10/copy v1.14.0 h1:dCI/t1iTdYGtkvCuBG2BgR6KZa83PTclw4U5n2wAllU=

73
templates/composer.yml
View file

@ -103,8 +103,21 @@ objects:
value: "${PGSSLMODE}"
- name: PGMAXCONNS
value: "${PGMAXCONNS}"
- name: SYSLOG_SERVER
value: "localhost:5140"
# Splunk forwarding
- name: SPLUNK_HEC_TOKEN
valueFrom:
secretKeyRef:
name: splunk
key: token
optional: true
- name: SPLUNK_HEC_HOST
valueFrom:
secretKeyRef:
name: splunk
key: url
optional: true
- name: SPLUNK_HEC_PORT
value: "${SPLUNK_HEC_PORT}"
ports:
- name: composer-api
protocol: TCP
@ -123,32 +136,6 @@ objects:
mountPath: "/var/lib/osbuild-composer"
- name: cache-directory
mountPath: "/var/cache/osbuild-composer"
- image: "quay.io/app-sre/fluentd-hec:1.2.13"
name: fluentd-sidecar
resources:
requests:
cpu: "${FLUENTD_CPU_REQUEST}"
memory: "${MEMORY_REQUEST}"
limits:
cpu: "${FLUENTD_CPU_LIMIT}"
memory: "${MEMORY_LIMIT}"
env:
- name: SPLUNK_HEC_TOKEN
valueFrom:
secretKeyRef:
name: splunk
key: token
optional: false
- name: SPLUNK_HEC_URL
valueFrom:
secretKeyRef:
name: splunk
key: url
optional: false
volumeMounts:
- name: fluentd-config
mountPath: /fluentd/etc
readOnly: true
volumes:
- name: composer-config
configMap:
@ -157,9 +144,6 @@ objects:
emptyDir: {}
- name: cache-directory
emptyDir: {}
- name: fluentd-config
configMap:
name: fluentd-config
initContainers:
- name: composer-migrate
image: "${IMAGE_NAME}:${IMAGE_TAG}"
@ -273,30 +257,6 @@ objects:
jwt_keys_urls = ["${RH_SSO_BASE_URL}/protocol/openid-connect/certs"]
jwt_acl_file = "${COMPOSER_CONFIG_DIR}/acl.yml"
jwt_tenant_provider_fields = ["rh-org-id", "account_id"]
- apiVersion: v1
kind: ConfigMap
metadata:
name: fluentd-config
data:
fluent.conf: |
<source>
@type syslog
port 5140
bind 127.0.0.1
<transport tcp>
</transport>
tag osbuild-composer
<parse>
time_format %Y-%m-%dT%H:%M:%SZ
</parse>
</source>
<match **>
@type splunk_hec
hec_host "#{ENV['SPLUNK_HEC_URL']}"
hec_port "${SPLUNK_HEC_PORT}"
hec_token "#{ENV['SPLUNK_HEC_TOKEN']}"
</match>
- apiVersion: batch/v1
kind: CronJob
metadata:
@ -523,7 +483,6 @@ parameters:
name: MAINTENANCE_MAX_CONCURRENT_REQUESTS
value: "10"
required: true
- description: fluentd-hec splunk port
- description: Splunk HTTP Event Collector port
name: SPLUNK_HEC_PORT
value: "443"
required: true

201
vendor/github.com/osbuild/osbuild-composer/pkg/splunk_logger/LICENSE generated vendored Normal file
View file

@ -0,0 +1,201 @@
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45
vendor/github.com/osbuild/osbuild-composer/pkg/splunk_logger/splunk_hook.go generated vendored Normal file
View file

@ -0,0 +1,45 @@
package logger
import (
"context"
"fmt"
"os"
"github.com/sirupsen/logrus"
)
type SplunkHook struct {
sl *SplunkLogger
}
func NewSplunkHook(context context.Context, host, port, token, source string) (*SplunkHook, error) {
url := fmt.Sprintf("https://%s:%s/services/collector/event", host, port)
hostname, err := os.Hostname()
if err != nil {
return nil, err
}
return &SplunkHook{
sl: NewSplunkLogger(context, url, token, source, hostname),
}, nil
}
func (sh *SplunkHook) Fire(entry *logrus.Entry) error {
msg, err := entry.String()
if err != nil {
return err
}
return sh.sl.LogWithTime(entry.Time, msg)
}
func (sh *SplunkHook) Levels() []logrus.Level {
return []logrus.Level{
logrus.PanicLevel,
logrus.FatalLevel,
logrus.ErrorLevel,
logrus.WarnLevel,
logrus.InfoLevel,
logrus.DebugLevel,
}
}

154
vendor/github.com/osbuild/osbuild-composer/pkg/splunk_logger/splunk_logger.go generated vendored Normal file
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@ -0,0 +1,154 @@
package logger
import (
"bytes"
"context"
"encoding/json"
"fmt"
"net/http"
"os"
"time"
"github.com/hashicorp/go-retryablehttp"
)
const (
PayloadsChannelSize = 1000
// in seconds, how often batched events should be sent
SendFrequency = 5
)
type SplunkLogger struct {
client *http.Client
url string
token string
source string
hostname string
payloads chan *SplunkPayload
}
type SplunkPayload struct {
// splunk expects unix time in seconds
Time int64 `json:"time"`
Host string `json:"host"`
Event SplunkEvent `json:"event"`
}
type SplunkEvent struct {
Message string `json:"message"`
Ident string `json:"ident"`
Host string `json:"host"`
}
func NewSplunkLogger(context context.Context, url, token, source, hostname string) *SplunkLogger {
sl := &SplunkLogger{
client: retryablehttp.NewClient().StandardClient(),
url: url,
token: token,
source: source,
hostname: hostname,
}
ticker := time.NewTicker(time.Second * SendFrequency)
sl.payloads = make(chan *SplunkPayload, PayloadsChannelSize)
go sl.flushPayloads(context, ticker.C)
return sl
}
func (sl *SplunkLogger) flushPayloads(context context.Context, ticker <-chan time.Time) {
var payloads []*SplunkPayload
for {
select {
case <-context.Done():
err := sl.SendPayloads(payloads)
if err != nil {
fmt.Fprintf(os.Stderr, "Splunk logger unable to send payloads: %v", err)
}
return
case p := <-sl.payloads:
if p != nil {
payloads = append(payloads, p)
}
if len(payloads) == PayloadsChannelSize {
err := sl.SendPayloads(payloads)
if err != nil {
fmt.Fprintf(os.Stderr, "Splunk logger unable to send payloads: %v", err)
}
payloads = nil
}
case <-ticker:
err := sl.SendPayloads(payloads)
if err != nil {
fmt.Fprintf(os.Stderr, "Splunk logger unable to send payloads: %v", err)
}
payloads = nil
}
}
}
func (sl *SplunkLogger) SendPayloads(payloads []*SplunkPayload) error {
if len(payloads) == 0 {
return nil
}
buf := bytes.NewBuffer(nil)
for _, pl := range payloads {
b, err := json.Marshal(pl)
if err != nil {
return err
}
_, err = buf.Write(b)
if err != nil {
return err
}
}
req, err := http.NewRequest("POST", sl.url, bytes.NewReader(buf.Bytes()))
if err != nil {
return err
}
req.Header.Add("Content-Type", "application/json")
req.Header.Add("Authorization", fmt.Sprintf("Splunk %s", sl.token))
res, err := sl.client.Do(req)
if err != nil {
return err
}
defer func() {
if err := res.Body.Close(); err != nil {
fmt.Fprintf(os.Stderr, "Unable to close response body when sending payloads")
}
}()
if res.StatusCode != http.StatusOK {
buf := bytes.Buffer{}
_, err = buf.ReadFrom(res.Body)
if err != nil {
return fmt.Errorf("Error forwarding to splunk: parsing response failed: %v", err)
}
return fmt.Errorf("Error forwarding to splunk: %s", buf.String())
}
return nil
}
func (sl *SplunkLogger) LogWithTime(t time.Time, msg string) error {
sp := SplunkPayload{
Time: t.Unix(),
Host: sl.hostname,
Event: SplunkEvent{
Message: msg,
Ident: sl.source,
Host: sl.hostname,
},
}
select {
case sl.payloads <- &sp:
default:
return fmt.Errorf("Error queueing splunk payload, channel full")
}
return nil
}

3
vendor/modules.txt vendored
View file

@ -691,6 +691,9 @@ github.com/osbuild/images/pkg/rhsm/facts
github.com/osbuild/images/pkg/rpmmd
github.com/osbuild/images/pkg/runner
github.com/osbuild/images/pkg/subscription
# github.com/osbuild/osbuild-composer/pkg/splunk_logger v0.0.0-20231117174845-e969a9dc3cd1
## explicit; go 1.19
github.com/osbuild/osbuild-composer/pkg/splunk_logger
# github.com/osbuild/pulp-client v0.1.0
## explicit; go 1.19
github.com/osbuild/pulp-client/pulpclient