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Add support for TCP parameters

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Signed-off-by: Ghislain Bourgeois <ghislain.bourgeois@gmail.com>
This commit is contained in:
Ghislain Bourgeois 2017-09-05 17:17:59 -04:00
parent 72f5e5e84f
commit e21f7b6e76
2 changed files with 106 additions and 17 deletions
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46
daemon/logger/gelf/gelf.go
View file

@ -47,6 +47,10 @@ func New(info logger.Info) (logger.Logger, error) {
return nil, err
}
if address.Scheme == "tcp" {
return nil, fmt.Errorf("gelf: TCP not yet implemented")
}
// collect extra data for GELF message
hostname, err := info.Hostname()
if err != nil {
@ -90,9 +94,9 @@ func New(info logger.Info) (logger.Logger, error) {
}
// create new gelfWriter
gelfWriter, err := gelf.NewUDPWriter(address)
gelfWriter, err := gelf.NewUDPWriter(address.String())
if err != nil {
return nil, fmt.Errorf("gelf: cannot connect to GELF endpoint: %s %v", address, err)
return nil, fmt.Errorf("gelf: cannot connect to GELF endpoint: %s %v", address.String(), err)
}
if v, ok := info.Config["gelf-compression-type"]; ok {
@ -156,6 +160,11 @@ func (s *gelfLogger) Name() string {
// ValidateLogOpt looks for gelf specific log option gelf-address.
func ValidateLogOpt(cfg map[string]string) error {
address, err := parseAddress(cfg["gelf-address"])
if err != nil {
return err
}
for key, val := range cfg {
switch key {
case "gelf-address":
@ -164,46 +173,59 @@ func ValidateLogOpt(cfg map[string]string) error {
case "env":
case "env-regex":
case "gelf-compression-level":
if address.Scheme != "udp" {
return fmt.Errorf("compression is only supported on UDP")
}
i, err := strconv.Atoi(val)
if err != nil || i < flate.DefaultCompression || i > flate.BestCompression {
return fmt.Errorf("unknown value %q for log opt %q for gelf log driver", val, key)
}
case "gelf-compression-type":
if address.Scheme != "udp" {
return fmt.Errorf("compression is only supported on UDP")
}
switch val {
case "gzip", "zlib", "none":
default:
return fmt.Errorf("unknown value %q for log opt %q for gelf log driver", val, key)
}
case "gelf-tcp-max-reconnect", "gelf-tcp-reconnect-delay":
if address.Scheme != "tcp" {
return fmt.Errorf("%q is only valid for TCP", key)
}
i, err := strconv.Atoi(val)
if err != nil || i < 0 {
return fmt.Errorf("%q must be a positive integer", key)
}
default:
return fmt.Errorf("unknown log opt %q for gelf log driver", key)
}
}
_, err := parseAddress(cfg["gelf-address"])
return err
return nil
}
func parseAddress(address string) (string, error) {
func parseAddress(address string) (*url.URL, error) {
if address == "" {
return "", nil
return nil, fmt.Errorf("gelf-address is a required parameter")
}
if !urlutil.IsTransportURL(address) {
return "", fmt.Errorf("gelf-address should be in form proto://address, got %v", address)
return nil, fmt.Errorf("gelf-address should be in form proto://address, got %v", address)
}
url, err := url.Parse(address)
if err != nil {
return "", err
return nil, err
}
// we support only udp
if url.Scheme != "udp" {
return "", fmt.Errorf("gelf: endpoint needs to be UDP")
if url.Scheme != "udp" && url.Scheme != "tcp" {
return nil, fmt.Errorf("gelf: endpoint needs to be TCP or UDP")
}
// get host and port
if _, _, err = net.SplitHostPort(url.Host); err != nil {
return "", fmt.Errorf("gelf: please provide gelf-address as udp://host:port")
return nil, fmt.Errorf("gelf: please provide gelf-address as proto://host:port")
}
return url.Host, nil
return url, nil
}

77
daemon/logger/gelf/gelf_test.go
View file

@ -8,12 +8,12 @@ import (
//Validate parseAddress
func TestParseAddress(t *testing.T) {
host, err := parseAddress("udp://127.0.0.1:12201")
url, err := parseAddress("udp://127.0.0.1:12201")
if err != nil {
t.Fatal(err)
}
if host != "127.0.0.1:12201" {
t.Fatalf("Expected host 127.0.0.1, got %s", host)
if url.String() != "udp://127.0.0.1:12201" {
t.Fatalf("Expected address udp://127.0.0.1:12201, got %s", url.String())
}
_, err = parseAddress("127.0.0.1:12201")
@ -27,8 +27,8 @@ func TestParseAddress(t *testing.T) {
}
}
//Validate options
func TestValidateLogOpt(t *testing.T) {
//Validate UDP options
func TestUDPValidateLogOpt(t *testing.T) {
err := ValidateLogOpt(map[string]string{
"gelf-address": "udp://127.0.0.1:12201",
"tag": "testtag",
@ -65,4 +65,71 @@ func TestValidateLogOpt(t *testing.T) {
if err == nil {
t.Fatal("Expected unknown option error")
}
err = ValidateLogOpt(map[string]string{})
if err == nil {
t.Fatal("Expected required parameter error")
}
}
//Validate TCP options
func TestTCPValidateLogOpt(t *testing.T) {
err := ValidateLogOpt(map[string]string{
"gelf-address": "tcp://127.0.0.1:12201",
})
if err != nil {
t.Fatal("Expected TCP to be supported")
}
err = ValidateLogOpt(map[string]string{
"gelf-address": "tcp://127.0.0.1:12201",
"gelf-compression-level": "9",
})
if err == nil {
t.Fatal("Expected TCP to reject compression level")
}
err = ValidateLogOpt(map[string]string{
"gelf-address": "tcp://127.0.0.1:12201",
"gelf-compression-type": "gzip",
})
if err == nil {
t.Fatal("Expected TCP to reject compression type")
}
err = ValidateLogOpt(map[string]string{
"gelf-address": "tcp://127.0.0.1:12201",
"gelf-tcp-max-reconnect": "5",
"gelf-tcp-reconnect-delay": "10",
})
if err != nil {
t.Fatal("Expected TCP reconnect to be a valid parameters")
}
err = ValidateLogOpt(map[string]string{
"gelf-address": "tcp://127.0.0.1:12201",
"gelf-tcp-max-reconnect": "-1",
"gelf-tcp-reconnect-delay": "-3",
})
if err == nil {
t.Fatal("Expected negative TCP reconnect to be rejected")
}
err = ValidateLogOpt(map[string]string{
"gelf-address": "tcp://127.0.0.1:12201",
"gelf-tcp-max-reconnect": "invalid",
"gelf-tcp-reconnect-delay": "invalid",
})
if err == nil {
t.Fatal("Expected TCP reconnect to be required to be an int")
}
err = ValidateLogOpt(map[string]string{
"gelf-address": "udp://127.0.0.1:12201",
"gelf-tcp-max-reconnect": "1",
"gelf-tcp-reconnect-delay": "3",
})
if err == nil {
t.Fatal("Expected TCP reconnect to be invalid for UDP")
}
}