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cli.go
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package main
import (
"context"
"fmt"
"log"
"os"
"os/signal"
"strings"
"time"
"github.com/cloudfoundry-community/firehose-to-syslog/caching"
"github.com/cloudfoundry-community/firehose-to-syslog/eventRouting"
"github.com/cloudfoundry-community/firehose-to-syslog/firehoseclient"
"github.com/cloudfoundry-community/firehose-to-syslog/logging"
"github.com/cloudfoundry-community/firehose-to-syslog/stats"
"github.com/cloudfoundry-community/firehose-to-syslog/uaatokenrefresher"
"github.com/cloudfoundry-community/go-cfclient"
"gopkg.in/alecthomas/kingpin.v2"
)
var (
debug = kingpin.Flag("debug", "Enable debug mode. This disables forwarding to syslog").Default("false").Envar("DEBUG").Bool()
apiEndpoint = kingpin.Flag("api-endpoint", "Api endpoint address. For bosh-lite installation of CF: https://api.10.244.0.34.xip.io").Envar("API_ENDPOINT").Required().String()
dopplerEndpoint = kingpin.Flag("doppler-endpoint", "Overwrite default doppler endpoint return by /v2/info").Envar("DOPPLER_ENDPOINT").String()
syslogServer = kingpin.Flag("syslog-server", "Syslog server.").Envar("SYSLOG_ENDPOINT").String()
syslogProtocol = kingpin.Flag("syslog-protocol", "Syslog protocol (tcp/udp/tcp+tls).").Default("tcp").Envar("SYSLOG_PROTOCOL").String()
skipSSLSyslog = kingpin.Flag("skip-ssl-validation-syslog", "Skip Ssl validation for syslog").Default("false").Envar("SKIP_SSL_VALIDATION_SYSLOG").Bool()
subscriptionId = kingpin.Flag("subscription-id", "Id for the subscription.").Default("firehose").Envar("FIREHOSE_SUBSCRIPTION_ID").String()
clientID = kingpin.Flag("client-id", "Client ID.").Envar("FIREHOSE_CLIENT_ID").Required().String()
clientSecret = kingpin.Flag("client-secret", "Client secret.").Envar("FIREHOSE_CLIENT_SECRET").Required().String()
skipSSLValidation = kingpin.Flag("skip-ssl-validation", "Please don't").Default("false").Envar("SKIP_SSL_VALIDATION").Bool()
keepAlive = kingpin.Flag("fh-keep-alive", "Keep Alive duration for the firehose consumer").Default("25s").Envar("FH_KEEP_ALIVE").Duration()
minRetryDelay = kingpin.Flag("min-retry-delay", "Doppler Cloud Foundry Doppler min. retry delay duration").Default("500ms").Envar("MIN_RETRY_DELAY").Duration()
maxRetryDelay = kingpin.Flag("max-retry-delay", "Doppler Cloud Foundry Doppler max. retry delay duration").Default("1m").Envar("MAX_RETRY_DELAY").Duration()
maxRetryCount = kingpin.Flag("max-retry-count", "Doppler Cloud Foundry Doppler max. retry Count duration").Default("1000").Envar("MAX_RETRY_COUNT").Int()
bufferSize = kingpin.Flag("logs-buffer-size", "Number of envelope to be buffered").Default("10000").Envar("LOGS_BUFFER_SIZE").Int()
wantedEvents = kingpin.Flag("events", fmt.Sprintf("Comma separated list of events you would like. Valid options are %s", eventRouting.GetListAuthorizedEventEvents())).Default("LogMessage").Envar("EVENTS").String()
statServer = kingpin.Flag("enable-stats-server", "Will enable stats server on 8080").Default("false").Envar("ENABLE_STATS_SERVER").Bool()
boltDatabasePath = kingpin.Flag("boltdb-path", "Bolt Database path ").Envar("BOLTDB_PATH").String()
tickerTime = kingpin.Flag("cc-pull-time", "CloudController Polling time in sec").Default("60s").Envar("CF_PULL_TIME").Duration()
requestLimit = kingpin.Flag("cc-rps", "CloudController Polling request by second (IGNORED)").Default("50").Envar("CF_RPS").Int()
extraFields = kingpin.Flag("extra-fields", "Extra fields you want to annotate your events with, example: '--extra-fields=env:dev,something:other ").Default("").Envar("EXTRA_FIELDS").String()
orgs = kingpin.Flag("orgs", "Forwarded on the app logs from theses organisations' example: --orgs=org1,org2").Default("").Envar("ORGS").String()
modeProf = kingpin.Flag("mode-prof", "Enable profiling mode, one of [cpu, mem, block]").Default("").Envar("MODE_PROF").String()
pathProf = kingpin.Flag("path-prof", "Set the Path to write profiling file").Default("").Envar("PATH_PROF").String()
logFormatterType = kingpin.Flag("log-formatter-type", "Log formatter type to use. Valid options are text, json, json-cee. If none provided, defaults to json.").Envar("LOG_FORMATTER_TYPE").String()
certPath = kingpin.Flag("cert-pem-syslog", "Certificate Pem file").Envar("CERT_PEM").Default("").String()
ignoreMissingApps = kingpin.Flag("ignore-missing-apps", "Enable throttling on cache lookup for missing apps").Envar("IGNORE_MISSING_APPS").Default("false").Bool()
stripAppSuffixes = kingpin.Flag("strip-app-name-suffixes", "Suffixes that should be stripped from application names, comma separated").Envar("STRIP_APP_NAME_SUFFIXES").Default("").String()
)
const (
ExitCodeOk = 0
ExitCodeError = 1 + iota
)
var (
version = "0.0.0"
)
// CLI is the command line object
type CLI struct {
}
// Run invokes the CLI with the given arguments.
func (cli *CLI) Run(args []string) int {
kingpin.Version(version)
kingpin.Parse()
//Setup Logging
loggingClient := logging.NewLogging(*syslogServer, *syslogProtocol, *logFormatterType, *certPath, *debug, *skipSSLSyslog)
logging.LogStd(fmt.Sprintf("Starting firehose-to-syslog %s ", version), true)
//
// if *modeProf != "" {
// switch *modeProf {
// case "cpu":
// defer profile.Start(profile.CPUProfile, profile.ProfilePath(*pathProf)).Stop()
// case "mem":
// defer profile.Start(profile.MemProfile, profile.ProfilePath(*pathProf)).Stop()
// case "block":
// defer profile.Start(profile.BlockProfile, profile.ProfilePath(*pathProf)).Stop()
// default:
// // do nothing
// }
// }
c := cfclient.Config{
ApiAddress: *apiEndpoint,
ClientID: *clientID,
ClientSecret: *clientSecret,
SkipSslValidation: *skipSSLValidation,
UserAgent: "firehose-to-syslog/" + version,
}
cfClient, err := cfclient.NewClient(&c)
if err != nil {
logging.LogError("New Client: ", err)
return ExitCodeError
}
if len(*dopplerEndpoint) > 0 {
cfClient.Endpoint.DopplerEndpoint = *dopplerEndpoint
}
fmt.Println(cfClient.Endpoint.DopplerEndpoint)
logging.LogStd(fmt.Sprintf("Using %s as doppler endpoint", cfClient.Endpoint.DopplerEndpoint), true)
//Creating Caching
var cacheStore caching.CacheStore
switch {
case boltDatabasePath != nil && *boltDatabasePath != "":
cacheStore = &caching.BoltCacheStore{
Path: *boltDatabasePath,
}
default:
cacheStore = &caching.MemoryCacheStore{}
}
if err := cacheStore.Open(); err != nil {
logging.LogError("Error open cache: ", err)
return ExitCodeError
}
defer cacheStore.Close()
cachingClient := caching.NewCacheLazyFill(&caching.CFClientAdapter{
CF: cfClient,
}, cacheStore, &caching.CacheLazyFillConfig{
IgnoreMissingApps: *ignoreMissingApps,
CacheInvalidateTTL: *tickerTime,
StripAppSuffixes: strings.Split(*stripAppSuffixes, ","),
})
if caching.IsNeeded(*wantedEvents) {
// Bootstrap cache
logging.LogStd("Pre-filling cache...", true)
err = cachingClient.FillCache()
if err != nil {
logging.LogError("Error pre-filling cache: ", err)
return ExitCodeError
}
logging.LogStd("Cache filled.", true)
}
//Adding Stats
statistic := stats.NewStats()
go statistic.PerSec()
////Starting Http Server for Stats
if *statServer {
Server := &stats.Server{
Logger: log.New(os.Stdout, "", 1),
Stats: statistic,
}
go Server.Start()
}
//Creating Events
eventFilters := []eventRouting.EventFilter{eventRouting.HasIgnoreField, eventRouting.NotInCertainOrgs(*orgs)}
events := eventRouting.NewEventRouting(cachingClient, loggingClient, statistic, eventFilters)
err = events.SetupEventRouting(*wantedEvents)
if err != nil {
logging.LogError("Error setting up event routing: ", err)
return ExitCodeError
}
//Set extrafields if needed
events.SetExtraFields(*extraFields)
uaaRefresher, err := uaatokenrefresher.NewUAATokenRefresher(
cfClient.Endpoint.AuthEndpoint,
*clientID,
*clientSecret,
*skipSSLValidation,
)
if err != nil {
logging.LogError(fmt.Sprint("Failed connecting to Get token from UAA..", err), "")
}
firehoseConfig := &firehoseclient.FirehoseConfig{
TrafficControllerURL: cfClient.Endpoint.DopplerEndpoint,
InsecureSSLSkipVerify: *skipSSLValidation,
IdleTimeoutSeconds: *keepAlive,
FirehoseSubscriptionID: *subscriptionId,
MinRetryDelay: *minRetryDelay,
MaxRetryDelay: *maxRetryDelay,
MaxRetryCount: *maxRetryCount,
BufferSize: *bufferSize,
}
if loggingClient.Connect() || *debug {
logging.LogStd("Connected to Syslog Server! Connecting to Firehose...", true)
} else {
logging.LogError("Failed connecting to the Syslog Server...Please check settings and try again!", "")
return ExitCodeError
}
firehoseClient := firehoseclient.NewFirehoseNozzle(uaaRefresher, events, firehoseConfig, statistic)
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
firehoseClient.Start(ctx)
signalChan := make(chan os.Signal, 1)
cleanupDone := make(chan bool)
signal.Notify(signalChan, os.Interrupt, os.Kill)
go func() {
for _ = range signalChan {
fmt.Println("\nSignal Received, Stop reading and starting Draining...")
firehoseClient.StopReading()
cctx, tcancel := context.WithTimeout(context.TODO(), 30*time.Second)
tcancel()
firehoseClient.Draining(cctx)
cleanupDone <- true
}
}()
<-cleanupDone
return ExitCodeOk
}