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autoconfig.go
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autoconfig.go
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// Unless explicitly stated otherwise all files in this repository are licensed
// under the Apache License Version 2.0.
// This product includes software developed at Datadog (https://www.datadoghq.com/).
// Copyright 2016-2019 Datadog, Inc.
package common
import (
"path/filepath"
"github.com/ninnemana/datadog-agent/pkg/autodiscovery"
"github.com/ninnemana/datadog-agent/pkg/autodiscovery/providers"
"github.com/ninnemana/datadog-agent/pkg/autodiscovery/scheduler"
"github.com/ninnemana/datadog-agent/pkg/collector"
"github.com/ninnemana/datadog-agent/pkg/config"
"github.com/ninnemana/datadog-agent/pkg/logs"
"github.com/ninnemana/datadog-agent/pkg/tagger"
"github.com/ninnemana/datadog-agent/pkg/util/log"
)
// SetupAutoConfig configures the global AutoConfig:
// 1. add the configuration providers
// 2. add the check loaders
func SetupAutoConfig(confdPath string) {
// start tagging system
tagger.Init()
// create the Collector instance and start all the components
// NOTICE: this will also setup the Python environment, if available
Coll = collector.NewCollector(GetPythonPaths()...)
// creating the meta scheduler
metaScheduler := scheduler.NewMetaScheduler()
// registering the check scheduler
metaScheduler.Register("check", collector.InitCheckScheduler(Coll))
// registering the logs scheduler
if logs.IsAgentRunning() {
metaScheduler.Register("logs", logs.GetScheduler())
}
// create the Autoconfig instance
AC = autodiscovery.NewAutoConfig(metaScheduler)
// Add the configuration providers
// File Provider is hardocded and always enabled
confSearchPaths := []string{
confdPath,
filepath.Join(GetDistPath(), "conf.d"),
"",
}
AC.AddConfigProvider(providers.NewFileConfigProvider(confSearchPaths), false, 0)
// Register additional configuration providers
var CP []config.ConfigurationProviders
err := config.Datadog.UnmarshalKey("config_providers", &CP)
if err == nil {
// Add extra config providers
for _, name := range config.Datadog.GetStringSlice("extra_config_providers") {
CP = append(CP, config.ConfigurationProviders{Name: name, Polling: true})
}
for _, cp := range CP {
factory, found := providers.ProviderCatalog[cp.Name]
if found {
configProvider, err := factory(cp)
if err == nil {
pollInterval := providers.GetPollInterval(cp)
if cp.Polling {
log.Infof("Registering %s config provider polled every %s", cp.Name, pollInterval.String())
} else {
log.Infof("Registering %s config provider", cp.Name)
}
AC.AddConfigProvider(configProvider, cp.Polling, pollInterval)
} else {
log.Errorf("Error while adding config provider %v: %v", cp.Name, err)
}
} else {
log.Errorf("Unable to find this provider in the catalog: %v", cp.Name)
}
}
} else {
log.Errorf("Error while reading 'config_providers' settings: %v", err)
}
// Autodiscovery listeners
// for now, no need to implement a registry of available listeners since we
// have only docker
var listeners []config.Listeners
err = config.Datadog.UnmarshalKey("listeners", &listeners)
if err == nil {
// Add extra listeners
for _, name := range config.Datadog.GetStringSlice("extra_listeners") {
listeners = append(listeners, config.Listeners{Name: name})
}
listeners = AutoAddListeners(listeners)
AC.AddListeners(listeners)
} else {
log.Errorf("Error while reading 'listeners' settings: %v", err)
}
}
// StartAutoConfig starts the autoconfig:
// 1. load all the configurations available at startup
// 2. run all the Checks for each configuration found
func StartAutoConfig() {
AC.LoadAndRun()
}