/
orchestrator.go
111 lines (96 loc) · 2.51 KB
/
orchestrator.go
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package core
import (
"fmt"
"github.com/Matrix86/driplane/data"
"path/filepath"
"sync"
"github.com/Matrix86/driplane/feeders"
"github.com/evilsocket/islazy/fs"
"github.com/evilsocket/islazy/log"
)
// Orchestrator handles the pipelines and rules
type Orchestrator struct {
asts map[string]*AST
config *Configuration
waitFeeder sync.WaitGroup
sync.Mutex
}
// NewOrchestrator create a new instance of the Orchestrator
func NewOrchestrator(config *Configuration) (Orchestrator, error) {
o := Orchestrator{
config: config,
asts: make(map[string]*AST),
}
parser, _ := NewParser()
err := fs.Glob(config.Get("general.rules_path"), "*.rule", func(file string) error {
abs, err := filepath.Abs(file)
if err != nil {
log.Fatal("cannot get absolute path of %s: %s", file, err)
}
file = abs
log.Info("parsing rule file: %s", file)
ast, err := parser.ParseFile(file)
if err != nil {
log.Fatal("rule parsing: file '%s': %s", file, err)
}
o.asts[file] = ast
_, err = RuleSetInstance().CompileAst(file, ast, o.config)
if err != nil {
return fmt.Errorf("compilation of '%s': %s", file, err)
}
return nil
})
if err != nil {
return o, fmt.Errorf("%s", err)
}
return o, nil
}
// StartFeeders opens the gates
func (o *Orchestrator) StartFeeders() {
o.Lock()
defer o.Unlock()
rs := RuleSetInstance()
for _, rulename := range rs.feedRules {
f := rs.rules[rulename].getFirstNode().(feeders.Feeder)
if f.IsRunning() == false {
log.Debug("[%s] Starting %s", rulename, f.Name())
o.waitFeeder.Add(1)
f.Start()
}
}
}
// HasRunningFeeder return true if one or more feeders are running
func (o *Orchestrator) HasRunningFeeder() bool {
rs := RuleSetInstance()
for _, rulename := range rs.feedRules {
f := rs.rules[rulename].getFirstNode().(feeders.Feeder)
if f.IsRunning() {
return true
}
}
return false
}
// WaitFeeders waits until all the feeders are stopped
func (o *Orchestrator) WaitFeeders() {
log.Debug("Waiting")
o.waitFeeder.Wait()
log.Debug("Stop waiting")
}
// StopFeeders closes the gates
func (o *Orchestrator) StopFeeders() {
o.Lock()
defer o.Unlock()
rs := RuleSetInstance()
for _, rulename := range rs.feedRules {
f := rs.rules[rulename].getFirstNode().(feeders.Feeder)
if f.IsRunning() {
log.Debug("[%s] Stopping %s", rulename, f.Name())
f.Stop()
o.waitFeeder.Done()
log.Debug("[%s] Stopped %s", rulename, f.Name())
}
}
// sending a shutdown event on the bus
rs.bus.Publish(data.EventTopicName, &data.Event{Type: "shutdown"})
rs.bus.WaitAsync()
}