forked from fujiwara/fluent-agent-hydra
/
config.go
176 lines (155 loc) · 3.3 KB
/
config.go
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package hydra
import (
"fmt"
"log"
"net"
"strconv"
"time"
"github.com/BurntSushi/toml"
)
const (
DefaultFluentdPort = 24224
DefaultFieldName = "message"
DefaultMaxBufferMessages = 1024 * 1024
DefaultTimeKey = "time"
DefaultTimeFormat = time.RFC3339
)
type Config struct {
TagPrefix string
FieldName string
ReadBufferSize int
Servers []*ConfigServer
ServerRoundRobin bool
Logs []*ConfigLogfile
Receiver *ConfigReceiver
Monitor *ConfigMonitor
}
type ConfigServer struct {
Host string
Port int
}
type ConfigLogfile struct {
Tag string
File string
FieldName string
Format FileFormat
ConvertMap ConvertMap `toml:"Types"`
TimeParse bool
TimeKey string
TimeFormat string
}
type ConfigReceiver struct {
Host string
Port int
MaxBufferMessages int
}
type ConfigMonitor struct {
Host string
Port int
}
func ReadConfig(filename string) (*Config, error) {
var config Config
log.Println("[info] Loading config file:", filename)
if _, err := toml.DecodeFile(filename, &config); err != nil {
return nil, err
}
config.Restrict()
return &config, nil
}
func NewConfigByArgs(args []string, fieldName string, monitorAddr string) *Config {
tag := args[0]
file := args[1]
servers := args[2:]
configLogfile := &ConfigLogfile{
Tag: tag,
File: file,
FieldName: fieldName,
}
configLogfiles := []*ConfigLogfile{configLogfile}
configServers := make([]*ConfigServer, len(servers))
for i, server := range servers {
var port int
host, _port, err := net.SplitHostPort(server)
if err != nil {
host = server
port = DefaultFluentdPort
} else {
port, _ = strconv.Atoi(_port)
}
configServers[i] = &ConfigServer{
Host: host,
Port: port,
}
}
config := &Config{
FieldName: fieldName,
Servers: configServers,
Logs: configLogfiles,
}
if monitorAddr != "" {
host, _port, err := net.SplitHostPort(monitorAddr)
if err != nil {
log.Println("[error] invalid monitor address", monitorAddr, "disabled.")
} else {
port, _ := strconv.Atoi(_port)
config.Monitor = &ConfigMonitor{
Host: host,
Port: port,
}
}
}
config.Restrict()
return config
}
func (cs *ConfigServer) Restrict(c *Config) {
if cs.Port == 0 {
cs.Port = DefaultFluentdPort
}
}
func (cr *ConfigReceiver) Restrict(c *Config) {
if cr.Port == 0 {
cr.Port = DefaultFluentdPort
}
switch cr.MaxBufferMessages {
case 0:
cr.MaxBufferMessages = DefaultMaxBufferMessages
case -1:
cr.MaxBufferMessages = 0
}
}
func (cs *ConfigServer) Address() string {
return fmt.Sprintf("%s:%d", cs.Host, cs.Port)
}
func (cl *ConfigLogfile) Restrict(c *Config) {
if cl.FieldName == "" {
cl.FieldName = c.FieldName
}
if c.TagPrefix != "" {
cl.Tag = c.TagPrefix + "." + cl.Tag
}
if cl.TimeKey == "" {
cl.TimeKey = DefaultTimeKey
}
if cl.TimeFormat == "" {
cl.TimeFormat = DefaultTimeFormat
}
}
func (cr *ConfigMonitor) Restrict(c *Config) {
if cr.Host == "" {
cr.Host = DefaultMonitorHost
}
}
func (c *Config) Restrict() {
if c.FieldName == "" {
c.FieldName = DefaultFieldName
}
for _, subconf := range c.Servers {
subconf.Restrict(c)
}
for _, subconf := range c.Logs {
subconf.Restrict(c)
}
if c.Receiver != nil {
c.Receiver.Restrict(c)
}
}