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example_test.go
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example_test.go
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package octetcounting
import (
"io"
"strings"
"time"
"github.com/davecgh/go-spew/spew"
syslog "github.com/leodido/go-syslog/v4"
)
func output(out interface{}) {
spew.Config.DisableCapacities = true
spew.Config.DisablePointerAddresses = true
spew.Dump(out)
}
func Example() {
results := []syslog.Result{}
acc := func(res *syslog.Result) {
results = append(results, *res)
}
r := strings.NewReader("48 <1>1 2003-10-11T22:14:15.003Z host.local - - - -25 <3>1 - host.local - - - -38 <2>1 - host.local su - - - κόσμε")
NewParser(syslog.WithBestEffort(), syslog.WithListener(acc)).Parse(r)
output(results)
// Output:
// ([]syslog.Result) (len=3) {
// (syslog.Result) {
// Message: (*rfc5424.SyslogMessage)({
// Base: (syslog.Base) {
// Facility: (*uint8)(0),
// Severity: (*uint8)(1),
// Priority: (*uint8)(1),
// Timestamp: (*time.Time)(2003-10-11 22:14:15.003 +0000 UTC),
// Hostname: (*string)((len=10) "host.local"),
// Appname: (*string)(<nil>),
// ProcID: (*string)(<nil>),
// MsgID: (*string)(<nil>),
// Message: (*string)(<nil>)
// },
// Version: (uint16) 1,
// StructuredData: (*map[string]map[string]string)(<nil>)
// }),
// Error: (error) <nil>
// },
// (syslog.Result) {
// Message: (*rfc5424.SyslogMessage)({
// Base: (syslog.Base) {
// Facility: (*uint8)(0),
// Severity: (*uint8)(3),
// Priority: (*uint8)(3),
// Timestamp: (*time.Time)(<nil>),
// Hostname: (*string)((len=10) "host.local"),
// Appname: (*string)(<nil>),
// ProcID: (*string)(<nil>),
// MsgID: (*string)(<nil>),
// Message: (*string)(<nil>)
// },
// Version: (uint16) 1,
// StructuredData: (*map[string]map[string]string)(<nil>)
// }),
// Error: (error) <nil>
// },
// (syslog.Result) {
// Message: (*rfc5424.SyslogMessage)({
// Base: (syslog.Base) {
// Facility: (*uint8)(0),
// Severity: (*uint8)(2),
// Priority: (*uint8)(2),
// Timestamp: (*time.Time)(<nil>),
// Hostname: (*string)((len=10) "host.local"),
// Appname: (*string)((len=2) "su"),
// ProcID: (*string)(<nil>),
// MsgID: (*string)(<nil>),
// Message: (*string)((len=11) "κόσμε")
// },
// Version: (uint16) 1,
// StructuredData: (*map[string]map[string]string)(<nil>)
// }),
// Error: (error) <nil>
// }
// }
}
func Example_channel() {
messages := []string{
"16 <1>1 - - - - - -",
"17 <2>12 A B C D E -",
"16 <1>1",
}
r, w := io.Pipe()
go func() {
defer w.Close()
for _, m := range messages {
w.Write([]byte(m))
time.Sleep(time.Millisecond * 220)
}
}()
c := make(chan syslog.Result)
emit := func(res *syslog.Result) {
c <- *res
}
parser := NewParser(syslog.WithBestEffort(), syslog.WithListener(emit))
go func() {
defer close(c)
parser.Parse(r)
}()
for r := range c {
output(r)
}
r.Close()
// Output:
// (syslog.Result) {
// Message: (*rfc5424.SyslogMessage)({
// Base: (syslog.Base) {
// Facility: (*uint8)(0),
// Severity: (*uint8)(1),
// Priority: (*uint8)(1),
// Timestamp: (*time.Time)(<nil>),
// Hostname: (*string)(<nil>),
// Appname: (*string)(<nil>),
// ProcID: (*string)(<nil>),
// MsgID: (*string)(<nil>),
// Message: (*string)(<nil>)
// },
// Version: (uint16) 1,
// StructuredData: (*map[string]map[string]string)(<nil>)
// }),
// Error: (error) <nil>
// }
// (syslog.Result) {
// Message: (*rfc5424.SyslogMessage)({
// Base: (syslog.Base) {
// Facility: (*uint8)(0),
// Severity: (*uint8)(2),
// Priority: (*uint8)(2),
// Timestamp: (*time.Time)(<nil>),
// Hostname: (*string)(<nil>),
// Appname: (*string)(<nil>),
// ProcID: (*string)(<nil>),
// MsgID: (*string)(<nil>),
// Message: (*string)(<nil>)
// },
// Version: (uint16) 12,
// StructuredData: (*map[string]map[string]string)(<nil>)
// }),
// Error: (*errors.errorString)(expecting a RFC3339MICRO timestamp or a nil value [col 6])
// }
// (syslog.Result) {
// Message: (*rfc5424.SyslogMessage)({
// Base: (syslog.Base) {
// Facility: (*uint8)(0),
// Severity: (*uint8)(1),
// Priority: (*uint8)(1),
// Timestamp: (*time.Time)(<nil>),
// Hostname: (*string)(<nil>),
// Appname: (*string)(<nil>),
// ProcID: (*string)(<nil>),
// MsgID: (*string)(<nil>),
// Message: (*string)(<nil>)
// },
// Version: (uint16) 1,
// StructuredData: (*map[string]map[string]string)(<nil>)
// }),
// Error: (*errors.errorString)(parsing error [col 4])
// }
}
func Example_channelOpenBSD() {
messages := []string{
"42 <46>Apr 28 11:53:44 syslogd[18823]: start\n",
"44 <47>Apr 28 11:53:44 syslogd[18823]: running\n",
"88 <86>Apr 28 11:53:46 doas: catap ran command ls / as root from /home/catap/src/go-syslog\n",
}
r, w := io.Pipe()
go func() {
defer w.Close()
for _, m := range messages {
w.Write([]byte(m))
time.Sleep(time.Millisecond * 220)
}
}()
c := make(chan syslog.Result)
emit := func(res *syslog.Result) {
c <- *res
}
parser := NewParserRFC3164(syslog.WithBestEffort(), syslog.WithListener(emit))
go func() {
defer close(c)
parser.Parse(r)
}()
for r := range c {
output(r)
}
r.Close()
// Output:
// (syslog.Result) {
// Message: (*rfc3164.SyslogMessage)({
// Base: (syslog.Base) {
// Facility: (*uint8)(5),
// Severity: (*uint8)(6),
// Priority: (*uint8)(46),
// Timestamp: (*time.Time)(0000-04-28 11:53:44 +0000 UTC),
// Hostname: (*string)(<nil>),
// Appname: (*string)((len=7) "syslogd"),
// ProcID: (*string)((len=5) "18823"),
// MsgID: (*string)(<nil>),
// Message: (*string)((len=5) "start")
// }
// }),
// Error: (error) <nil>
// }
// (syslog.Result) {
// Message: (*rfc3164.SyslogMessage)({
// Base: (syslog.Base) {
// Facility: (*uint8)(5),
// Severity: (*uint8)(7),
// Priority: (*uint8)(47),
// Timestamp: (*time.Time)(0000-04-28 11:53:44 +0000 UTC),
// Hostname: (*string)(<nil>),
// Appname: (*string)((len=7) "syslogd"),
// ProcID: (*string)((len=5) "18823"),
// MsgID: (*string)(<nil>),
// Message: (*string)((len=7) "running")
// }
// }),
// Error: (error) <nil>
// }
// (syslog.Result) {
// Message: (*rfc3164.SyslogMessage)({
// Base: (syslog.Base) {
// Facility: (*uint8)(10),
// Severity: (*uint8)(6),
// Priority: (*uint8)(86),
// Timestamp: (*time.Time)(0000-04-28 11:53:46 +0000 UTC),
// Hostname: (*string)(<nil>),
// Appname: (*string)((len=4) "doas"),
// ProcID: (*string)(<nil>),
// MsgID: (*string)(<nil>),
// Message: (*string)((len=61) "catap ran command ls / as root from /home/catap/src/go-syslog")
// }
// }),
// Error: (error) <nil>
// }
}