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main.go
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main.go
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package main
import (
"flag"
"fmt"
"github.com/boltdb/bolt"
"github.com/golang/glog"
"github.com/open-horizon/anax/agreement"
"github.com/open-horizon/anax/agreementbot"
agbotPersistence "github.com/open-horizon/anax/agreementbot/persistence"
_ "github.com/open-horizon/anax/agreementbot/persistence/bolt"
_ "github.com/open-horizon/anax/agreementbot/persistence/postgresql"
agbotSecretsImpl "github.com/open-horizon/anax/agreementbot/secrets"
_ "github.com/open-horizon/anax/agreementbot/secrets/vault"
"github.com/open-horizon/anax/api"
"github.com/open-horizon/anax/changes"
"github.com/open-horizon/anax/clusterupgrade"
"github.com/open-horizon/anax/config"
"github.com/open-horizon/anax/container"
"github.com/open-horizon/anax/download"
"github.com/open-horizon/anax/exchange"
_ "github.com/open-horizon/anax/externalpolicy/text_language"
"github.com/open-horizon/anax/governance"
"github.com/open-horizon/anax/i18n"
_ "github.com/open-horizon/anax/i18n_messages"
"github.com/open-horizon/anax/imagefetch"
"github.com/open-horizon/anax/kube_operator"
"github.com/open-horizon/anax/nodemanagement"
"github.com/open-horizon/anax/persistence"
"github.com/open-horizon/anax/policy"
"github.com/open-horizon/anax/resource"
"github.com/open-horizon/anax/worker"
"os"
"os/signal"
"path"
"runtime"
"runtime/pprof"
"syscall"
"time"
)
// The core of anax is an event handling system that distributes events to workers, where the workers
// process events that they are about. However, to get started, anax needs to do a bunch of initialization
// tasks. The config file has to be read in, the databases have to get created, and then the eventing system
// and the workers can be fired up.
func main() {
configFile := flag.String("config", "/etc/colonus/anax.config", "Config file location")
cpuprofile := flag.String("cpuprofile", "", "write cpu profile to file")
flag.Parse()
if *cpuprofile != "" {
f, err := os.Create(*cpuprofile)
if err != nil {
panic(err)
}
if err := pprof.StartCPUProfile(f); err != nil {
panic(err)
}
glog.V(2).Infof("Started CPU profiling. Writing to: %v", f.Name())
}
cfg, err := config.Read(*configFile)
if err != nil {
panic(err)
}
glog.V(2).Infof("Using config: %v", cfg.String())
glog.V(2).Infof("GOMAXPROCS: %v", runtime.GOMAXPROCS(-1))
// initialize the message printer for globalization, the anax will produce English messages.
// However, in order to extract messages for eventlog for translation, we need to use the message printer for
// eventlog messages.
i18n.InitMessagePrinter(true)
// open edge DB if necessary
var db *bolt.DB
if len(cfg.Edge.DBPath) != 0 {
if err := os.MkdirAll(cfg.Edge.DBPath, 0700); err != nil {
panic(err)
}
edgeDB, err := bolt.Open(path.Join(cfg.Edge.DBPath, "anax.db"), 0600, &bolt.Options{Timeout: 10 * time.Second})
if err != nil {
panic(err)
}
db = edgeDB
}
// open Agreement Bot DB if necessary
var agbotDB agbotPersistence.AgbotDatabase
agbotDB, dberr := agbotPersistence.InitDatabase(cfg)
if db == nil && dberr != nil {
panic(fmt.Sprintf("Unable to initialize Agreement Bot: %v", dberr))
} else if db != nil && dberr != nil {
glog.Warningf("Unable to initialize Agreement Bot database on this node: %v", dberr)
}
// Initialize the secrets implementation
var agbotSecrets agbotSecretsImpl.AgbotSecrets
as, aserr := agbotSecretsImpl.InitSecrets(cfg)
// If the agbot is configured, then check if there is a secrets plugin. If not, just issue a warning message.
if agbotDB != nil && aserr != nil {
glog.Warningf("Unable to initialize secrets plugin, continuing without secret support: %v", aserr)
}
agbotSecrets = as
// start control signal handler
control := make(chan os.Signal, 1)
signal.Notify(control, os.Interrupt)
signal.Notify(control, syscall.SIGTERM)
// This routine does not need to be a subworker because it has no parent worker and it will terminate on its own
// when the main anax process terminates.
go func() {
<-control
glog.Infof("Closing up shop.")
pprof.StopCPUProfile()
if db != nil {
db.Close()
// remove the local db
dbFile := path.Join(cfg.Edge.DBPath, "anax.db")
glog.Infof("Removing local db file %v.", dbFile)
if persistence.GetRemoveDatabaseOnExit() {
if err := os.Remove(dbFile); err != nil {
glog.Infof("Error Removing local db file %v, error %v", dbFile, err)
}
}
}
if agbotDB != nil {
agbotDB.Close()
}
os.Exit(0)
}()
// The anax runtime might have been upgraded an restarted with an existing database. If so, the
// device object might need to be upgraded.
usingPattern := false
if usingPattern, err = persistence.MigrateExchangeDevice(db); err != nil {
panic(err)
}
// Get the device side policy manager started early so that all the workers can use it.
// Make sure the policy directory is in place.
var pm *policy.PolicyManager
if cfg.Edge.PolicyPath == "" {
// nothing to initialize
} else if err := os.MkdirAll(cfg.Edge.PolicyPath, 0644); err != nil {
glog.Errorf("Cannot create edge policy file path %v, terminating.", cfg.Edge.PolicyPath)
panic(err)
} else if policyManager, err := policy.Initialize(cfg.Edge.PolicyPath, cfg.ArchSynonyms, nil, !usingPattern, true); err != nil {
glog.Errorf("Unable to initialize policy manager, terminating.")
panic(err)
} else {
pm = policyManager
}
// Initialize the shared authentication manager for service containers to authentication to the agent.
authm := resource.NewAuthenticationManager(cfg.GetFileSyncServiceAuthPath())
// Initialize the secrets manager to store secrets in the local db and in agent file system.
secretm := resource.NewSecretsManager(cfg, db)
// start workers
workers := worker.NewMessageHandlerRegistry()
workers.Add(agreementbot.NewAgreementBotWorker("AgBot", cfg, agbotDB, agbotSecrets))
if cfg.AgreementBot.APIListen != "" {
workers.Add(agreementbot.NewAPIListener("AgBot API", cfg, agbotDB, *configFile, agbotSecrets))
}
if cfg.AgreementBot.SecureAPIListenHost != "" {
workers.Add(agreementbot.NewSecureAPIListener("AgBot Secure API", cfg, agbotDB, agbotSecrets))
}
if agbotDB != nil {
workers.Add(agreementbot.NewChangesWorker("AgBot ExchangeChanges", cfg))
}
if db != nil {
workers.Add(api.NewAPIListener("API", cfg, db, pm))
workers.Add(agreement.NewAgreementWorker("Agreement", cfg, db, pm))
workers.Add(governance.NewGovernanceWorker("Governance", cfg, db, pm))
workers.Add(exchange.NewExchangeMessageWorker("ExchangeMessages", cfg, db))
if containerWorker := container.NewContainerWorker("Container", cfg, db, authm, secretm); containerWorker != nil {
workers.Add(containerWorker)
}
if imageWorker := imagefetch.NewImageFetchWorker("ImageFetch", cfg, db); imageWorker != nil {
workers.Add(imageWorker)
}
workers.Add(kube_operator.NewKubeWorker("Kube", cfg, db, authm, secretm))
workers.Add(resource.NewResourceWorker("Resource", cfg, db, authm))
workers.Add(changes.NewChangesWorker("ExchangeChanges", cfg, db))
workers.Add(nodemanagement.NewNodeManagementWorker("NodeManagement", cfg, db))
workers.Add(download.NewDownloadWorker("Download", cfg, db))
// add cluster upgrade worker only when it is edge cluster
if cfg.Edge.DockerEndpoint == "" {
workers.Add(clusterupgrade.NewClusterUpgradeWorker("ClusterUpgrade", cfg, db))
}
}
// Get into the event processing loop until anax shuts itself down.
workers.ProcessEventMessages()
if db != nil {
db.Close()
// remove the local db
dbFile := path.Join(cfg.Edge.DBPath, "anax.db")
glog.Infof("Removing local db file %v.", dbFile)
if persistence.GetRemoveDatabaseOnExit() {
if err := os.Remove(dbFile); err != nil {
glog.Infof("Error Removing local db file %v, error %v", dbFile, err)
}
}
}
if agbotDB != nil {
agbotDB.Close()
}
glog.Info("Main process terminating")
}