go-syslog: github.com/influxdata/go-syslog/octetcounting Index | Examples | Files

package octetcounting

import "github.com/influxdata/go-syslog/octetcounting"

Example

Code: 

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>
 }
}
Example (Channel)

Code: 

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])
}

Index

Examples

Package Files

parser.go scanner.go tokens.go

func NewParser Uses

❖
func NewParser(opts ...syslog.ParserOption) syslog.Parser

NewParser returns a syslog.Parser suitable to parse syslog messages sent with transparent - ie. octet counting (RFC 5425) - framing.

type Scanner Uses

❖
type Scanner struct {
    // contains filtered or unexported fields
}

Scanner represents the lexical scanner for octet counting transport.

func NewScanner Uses

❖
func NewScanner(r io.Reader, maxLength int) *Scanner

NewScanner returns a pointer to a new instance of Scanner.

func (*Scanner) Scan Uses

❖
func (s *Scanner) Scan() (tok Token)

Scan returns the next token.

type Token Uses

❖
type Token struct {
    // contains filtered or unexported fields
}

Token represents a lexical token of the octetcounting.

func (Token) String Uses

❖
func (t Token) String() string

String outputs the string representation of the receiving Token.

type TokenType Uses

❖
type TokenType int

TokenType represents a lexical token type of the octetcounting.

❖
const (
    ILLEGAL TokenType = iota
    EOF
    WS
    MSGLEN
    SYSLOGMSG
)

Tokens

func (TokenType) String Uses

❖
func (i TokenType) String() string

String outputs the string representation of the receiving TokenType.

Package octetcounting imports 7 packages (graph) and is imported by 3 packages. Updated 2020-10-30. Refresh now. Tools for package owners.