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Remove lumberjack logger (#257)

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* Removed lumberjack from coremain

As is mentioned in 251, this fix removed lumberjack from coremain.

Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

* Remove lumberjack from log middleware

As mentioned in 251, lumberjack is not suitable for applications like CoreDNS
so it is removed from the log middleware.

Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

* Update log/README.md as lumberjack has been removed

Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

* Adjust default log output from `ioutil.Discard` to `os.Stdout`

Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
This commit is contained in:
Yong Tang 2016-09-16 07:50:16 -07:00 • committed by Miek Gieben
parent 1c6dd35b23
commit 953cfc1de4
9 changed files with 7 additions and 254 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

10
coremain/run.go
View file

@ -12,7 +12,6 @@ import (
"strings"
"github.com/mholt/caddy"
"gopkg.in/natefinch/lumberjack.v2"
// Plug in CoreDNS
"github.com/miekg/coredns/core"
@ -49,15 +48,8 @@ func Run() {
log.SetOutput(os.Stdout)
case "stderr":
log.SetOutput(os.Stderr)
case "":
log.SetOutput(ioutil.Discard)
default:
log.SetOutput(&lumberjack.Logger{
Filename: logfile,
MaxSize: 100,
MaxAge: 14,
MaxBackups: 10,
})
log.SetOutput(os.Stdout)
}
log.SetFlags(log.LstdFlags)

10
middleware/errors/errors.go
View file

@ -9,7 +9,6 @@ import (
"time"
"github.com/miekg/coredns/middleware"
"github.com/miekg/coredns/middleware/pkg/roller"
"github.com/miekg/coredns/request"
"github.com/miekg/dns"
@ -18,11 +17,10 @@ import (
// ErrorHandler handles DNS errors (and errors from other middleware).
type ErrorHandler struct {
Next middleware.Handler
LogFile string
Log *log.Logger
LogRoller *roller.LogRoller
Debug bool // if true, errors are written out to client rather than to a log
Next middleware.Handler
LogFile string
Log *log.Logger
Debug bool // if true, errors are written out to client rather than to a log
}
func (h ErrorHandler) ServeDNS(ctx context.Context, w dns.ResponseWriter, r *dns.Msg) (int, error) {

25
middleware/errors/setup.go
View file

@ -7,7 +7,6 @@ import (
"github.com/miekg/coredns/core/dnsserver"
"github.com/miekg/coredns/middleware"
"github.com/miekg/coredns/middleware/pkg/roller"
"github.com/hashicorp/go-syslog"
"github.com/mholt/caddy"
@ -51,15 +50,7 @@ func setup(c *caddy.Controller) error {
if err != nil {
return middleware.Error("errors", err)
}
if handler.LogRoller != nil {
file.Close()
handler.LogRoller.Filename = handler.LogFile
writer = handler.LogRoller.GetLogWriter()
} else {
writer = file
}
writer = file
}
handler.Log = log.New(writer, "", 0)
@ -91,16 +82,6 @@ func errorsParse(c *caddy.Controller) (ErrorHandler, error) {
handler.Debug = true
} else {
handler.LogFile = where
if c.NextArg() {
if c.Val() == "{" {
c.IncrNest()
logRoller, err := roller.Parse(c)
if err != nil {
return hadBlock, err
}
handler.LogRoller = logRoller
}
}
}
}
}
@ -108,10 +89,6 @@ func errorsParse(c *caddy.Controller) (ErrorHandler, error) {
}
for c.Next() {
// weird hack to avoid having the handler values overwritten.
if c.Val() == "}" {
continue
}
// Configuration may be in a block
hadBlock, err := optionalBlock()
if err != nil {

50
middleware/errors/setup_test.go
View file

@ -4,7 +4,6 @@ import (
"testing"
"github.com/mholt/caddy"
"github.com/miekg/coredns/middleware/pkg/roller"
)
func TestErrorsParse(t *testing.T) {
@ -27,29 +26,6 @@ func TestErrorsParse(t *testing.T) {
LogFile: "",
Debug: true,
}},
{`errors { log errors.txt { size 2 age 10 keep 3 } }`, false, ErrorHandler{
LogFile: "errors.txt",
LogRoller: &roller.LogRoller{
MaxSize: 2,
MaxAge: 10,
MaxBackups: 3,
LocalTime: true,
},
}},
{`errors { log errors.txt {
size 3
age 11
keep 5
}
}`, false, ErrorHandler{
LogFile: "errors.txt",
LogRoller: &roller.LogRoller{
MaxSize: 3,
MaxAge: 11,
MaxBackups: 5,
LocalTime: true,
},
}},
}
for i, test := range tests {
c := caddy.NewTestController("dns", test.inputErrorsRules)
@ -68,31 +44,5 @@ func TestErrorsParse(t *testing.T) {
t.Errorf("Test %d expected Debug to be %v, but got %v",
i, test.expectedErrorHandler.Debug, actualErrorsRule.Debug)
}
if actualErrorsRule.LogRoller != nil && test.expectedErrorHandler.LogRoller == nil || actualErrorsRule.LogRoller == nil && test.expectedErrorHandler.LogRoller != nil {
t.Fatalf("Test %d expected LogRoller to be %v, but got %v",
i, test.expectedErrorHandler.LogRoller, actualErrorsRule.LogRoller)
}
if actualErrorsRule.LogRoller != nil && test.expectedErrorHandler.LogRoller != nil {
if actualErrorsRule.LogRoller.Filename != test.expectedErrorHandler.LogRoller.Filename {
t.Fatalf("Test %d expected LogRoller Filename to be %s, but got %s",
i, test.expectedErrorHandler.LogRoller.Filename, actualErrorsRule.LogRoller.Filename)
}
if actualErrorsRule.LogRoller.MaxAge != test.expectedErrorHandler.LogRoller.MaxAge {
t.Fatalf("Test %d expected LogRoller MaxAge to be %d, but got %d",
i, test.expectedErrorHandler.LogRoller.MaxAge, actualErrorsRule.LogRoller.MaxAge)
}
if actualErrorsRule.LogRoller.MaxBackups != test.expectedErrorHandler.LogRoller.MaxBackups {
t.Fatalf("Test %d expected LogRoller MaxBackups to be %d, but got %d",
i, test.expectedErrorHandler.LogRoller.MaxBackups, actualErrorsRule.LogRoller.MaxBackups)
}
if actualErrorsRule.LogRoller.MaxSize != test.expectedErrorHandler.LogRoller.MaxSize {
t.Fatalf("Test %d expected LogRoller MaxSize to be %d, but got %d",
i, test.expectedErrorHandler.LogRoller.MaxSize, actualErrorsRule.LogRoller.MaxSize)
}
if actualErrorsRule.LogRoller.LocalTime != test.expectedErrorHandler.LogRoller.LocalTime {
t.Fatalf("Test %d expected LogRoller LocalTime to be %t, but got %t",
i, test.expectedErrorHandler.LogRoller.LocalTime, actualErrorsRule.LogRoller.LocalTime)
}
}
}
}

31
middleware/log/README.md
View file

@ -54,26 +54,6 @@ The following place holders are supported:
* `{>opcode}`: query OPCODE
## Log Rotation
If you enable log rotation, log files will be automatically maintained when they get large or old.
You can use rotation by opening a block on your first line, which can be any of the variations
described above:
~~~
log ... {
rotate {
size maxsize
age maxage
keep maxkeep
}
}
~~~
* `maxsize` is the maximum size of a log file in megabytes (MB) before it gets rotated. Default is 100 MB.
* `maxage` is the maximum age of a rotated log file in days, after which it will be deleted. Default is to never delete old files because of age.
* `maxkeep` is the maximum number of rotated log files to keep. Default is to retain all old log files.
## Examples
Log all requests to a file:
@ -87,14 +67,3 @@ Custom log format:
~~~
log . ../query.log "{proto} Request: {name} {type} {>id}"
~~~
With rotation:
~~~
log query.log {
rotate {
100 # Rotate after 100 MB
age 14 # Keep log files for 14 days
keep 10 # Keep at most 10 log files
}
}

2
middleware/log/log.go
View file

@ -10,7 +10,6 @@ import (
"github.com/miekg/coredns/middleware/pkg/dnsrecorder"
"github.com/miekg/coredns/middleware/pkg/rcode"
"github.com/miekg/coredns/middleware/pkg/replacer"
"github.com/miekg/coredns/middleware/pkg/roller"
"github.com/miekg/coredns/request"
"github.com/miekg/dns"
@ -61,7 +60,6 @@ type Rule struct {
OutputFile string
Format string
Log *log.Logger
Roller *roller.LogRoller
}
const (

32
middleware/log/setup.go
View file

@ -7,7 +7,6 @@ import (
"github.com/miekg/coredns/core/dnsserver"
"github.com/miekg/coredns/middleware"
"github.com/miekg/coredns/middleware/pkg/roller"
"github.com/hashicorp/go-syslog"
"github.com/mholt/caddy"
@ -48,13 +47,7 @@ func setup(c *caddy.Controller) error {
if err != nil {
return middleware.Error("log", err)
}
if rules[i].Roller != nil {
file.Close()
rules[i].Roller.Filename = rules[i].OutputFile
writer = rules[i].Roller.GetLogWriter()
} else {
writer = file
}
writer = file
}
rules[i].Log = log.New(writer, "", 0)
@ -76,33 +69,12 @@ func logParse(c *caddy.Controller) ([]Rule, error) {
for c.Next() {
args := c.RemainingArgs()
var logRoller *roller.LogRoller
if c.NextBlock() {
if c.Val() == "rotate" {
if c.NextArg() {
if c.Val() == "{" {
var err error
logRoller, err = roller.Parse(c)
if err != nil {
return nil, err
}
// This part doesn't allow having something after the rotate block
if c.Next() {
if c.Val() != "}" {
return nil, c.ArgErr()
}
}
}
}
}
}
if len(args) == 0 {
// Nothing specified; use defaults
rules = append(rules, Rule{
NameScope: ".",
OutputFile: DefaultLogFilename,
Format: DefaultLogFormat,
Roller: logRoller,
})
} else if len(args) == 1 {
// Only an output file specified
@ -110,7 +82,6 @@ func logParse(c *caddy.Controller) ([]Rule, error) {
NameScope: ".",
OutputFile: args[0],
Format: DefaultLogFormat,
Roller: logRoller,
})
} else {
// Name scope, output file, and maybe a format specified
@ -132,7 +103,6 @@ func logParse(c *caddy.Controller) ([]Rule, error) {
NameScope: dns.Fqdn(args[0]),
OutputFile: args[1],
Format: format,
Roller: logRoller,
})
}
}

39
middleware/log/setup_test.go
View file

@ -3,8 +3,6 @@ package log
import (
"testing"
"github.com/miekg/coredns/middleware/pkg/roller"
"github.com/mholt/caddy"
)
@ -64,17 +62,6 @@ func TestLogParse(t *testing.T) {
OutputFile: "log.txt",
Format: "{when}",
}}},
{`log access.log { rotate { size 2 age 10 keep 3 } }`, false, []Rule{{
NameScope: ".",
OutputFile: "access.log",
Format: DefaultLogFormat,
Roller: &roller.LogRoller{
MaxSize: 2,
MaxAge: 10,
MaxBackups: 3,
LocalTime: true,
},
}}},
}
for i, test := range tests {
c := caddy.NewTestController("dns", test.inputLogRules)
@ -105,32 +92,6 @@ func TestLogParse(t *testing.T) {
t.Errorf("Test %d expected %dth LogRule Format to be %s , but got %s",
i, j, test.expectedLogRules[j].Format, actualLogRule.Format)
}
if actualLogRule.Roller != nil && test.expectedLogRules[j].Roller == nil || actualLogRule.Roller == nil && test.expectedLogRules[j].Roller != nil {
t.Fatalf("Test %d expected %dth LogRule Roller to be %v, but got %v",
i, j, test.expectedLogRules[j].Roller, actualLogRule.Roller)
}
if actualLogRule.Roller != nil && test.expectedLogRules[j].Roller != nil {
if actualLogRule.Roller.Filename != test.expectedLogRules[j].Roller.Filename {
t.Fatalf("Test %d expected %dth LogRule Roller Filename to be %s, but got %s",
i, j, test.expectedLogRules[j].Roller.Filename, actualLogRule.Roller.Filename)
}
if actualLogRule.Roller.MaxAge != test.expectedLogRules[j].Roller.MaxAge {
t.Fatalf("Test %d expected %dth LogRule Roller MaxAge to be %d, but got %d",
i, j, test.expectedLogRules[j].Roller.MaxAge, actualLogRule.Roller.MaxAge)
}
if actualLogRule.Roller.MaxBackups != test.expectedLogRules[j].Roller.MaxBackups {
t.Fatalf("Test %d expected %dth LogRule Roller MaxBackups to be %d, but got %d",
i, j, test.expectedLogRules[j].Roller.MaxBackups, actualLogRule.Roller.MaxBackups)
}
if actualLogRule.Roller.MaxSize != test.expectedLogRules[j].Roller.MaxSize {
t.Fatalf("Test %d expected %dth LogRule Roller MaxSize to be %d, but got %d",
i, j, test.expectedLogRules[j].Roller.MaxSize, actualLogRule.Roller.MaxSize)
}
if actualLogRule.Roller.LocalTime != test.expectedLogRules[j].Roller.LocalTime {
t.Fatalf("Test %d expected %dth LogRule Roller LocalTime to be %t, but got %t",
i, j, test.expectedLogRules[j].Roller.LocalTime, actualLogRule.Roller.LocalTime)
}
}
}
}

62
middleware/pkg/roller/roller.go
View file

@ -1,62 +0,0 @@
package roller
import (
"io"
"strconv"
"github.com/mholt/caddy"
"gopkg.in/natefinch/lumberjack.v2"
)
func Parse(c *caddy.Controller) (*LogRoller, error) {
var size, age, keep int
// This is kind of a hack to support nested blocks:
// As we are already in a block: either log or errors,
// c.nesting > 0 but, as soon as c meets a }, it thinks
// the block is over and return false for c.NextBlock.
for c.NextBlock() {
what := c.Val()
if !c.NextArg() {
return nil, c.ArgErr()
}
value := c.Val()
var err error
switch what {
case "size":
size, err = strconv.Atoi(value)
case "age":
age, err = strconv.Atoi(value)
case "keep":
keep, err = strconv.Atoi(value)
}
if err != nil {
return nil, err
}
}
return &LogRoller{
MaxSize: size,
MaxAge: age,
MaxBackups: keep,
LocalTime: true,
}, nil
}
// LogRoller implements a middleware that provides a rolling logger.
type LogRoller struct {
Filename string
MaxSize int
MaxAge int
MaxBackups int
LocalTime bool
}
// GetLogWriter returns an io.Writer that writes to a rolling logger.
func (l LogRoller) GetLogWriter() io.Writer {
return &lumberjack.Logger{
Filename: l.Filename,
MaxSize: l.MaxSize,
MaxAge: l.MaxAge,
MaxBackups: l.MaxBackups,
LocalTime: l.LocalTime,
}
}