[VOL-2538] Logging - Implement dynamic log levels in ofagent
Change-Id: I9582230d9d3c34ea84339fddf2b2f3b3d2804808
diff --git a/vendor/github.com/coreos/pkg/capnslog/README.md b/vendor/github.com/coreos/pkg/capnslog/README.md
new file mode 100644
index 0000000..f79dbfc
--- /dev/null
+++ b/vendor/github.com/coreos/pkg/capnslog/README.md
@@ -0,0 +1,39 @@
+# capnslog, the CoreOS logging package
+
+There are far too many logging packages out there, with varying degrees of licenses, far too many features (colorization, all sorts of log frameworks) or are just a pain to use (lack of `Fatalln()`?).
+capnslog provides a simple but consistent logging interface suitable for all kinds of projects.
+
+### Design Principles
+
+##### `package main` is the place where logging gets turned on and routed
+
+A library should not touch log options, only generate log entries. Libraries are silent until main lets them speak.
+
+##### All log options are runtime-configurable.
+
+Still the job of `main` to expose these configurations. `main` may delegate this to, say, a configuration webhook, but does so explicitly.
+
+##### There is one log object per package. It is registered under its repository and package name.
+
+`main` activates logging for its repository and any dependency repositories it would also like to have output in its logstream. `main` also dictates at which level each subpackage logs.
+
+##### There is *one* output stream, and it is an `io.Writer` composed with a formatter.
+
+Splitting streams is probably not the job of your program, but rather, your log aggregation framework. If you must split output streams, again, `main` configures this and you can write a very simple two-output struct that satisfies io.Writer.
+
+Fancy colorful formatting and JSON output are beyond the scope of a basic logging framework -- they're application/log-collector dependent. These are, at best, provided as options, but more likely, provided by your application.
+
+##### Log objects are an interface
+
+An object knows best how to print itself. Log objects can collect more interesting metadata if they wish, however, because text isn't going away anytime soon, they must all be marshalable to text. The simplest log object is a string, which returns itself. If you wish to do more fancy tricks for printing your log objects, see also JSON output -- introspect and write a formatter which can handle your advanced log interface. Making strings is the only thing guaranteed.
+
+##### Log levels have specific meanings:
+
+ * Critical: Unrecoverable. Must fail.
+ * Error: Data has been lost, a request has failed for a bad reason, or a required resource has been lost
+ * Warning: (Hopefully) Temporary conditions that may cause errors, but may work fine. A replica disappearing (that may reconnect) is a warning.
+ * Notice: Normal, but important (uncommon) log information.
+ * Info: Normal, working log information, everything is fine, but helpful notices for auditing or common operations.
+ * Debug: Everything is still fine, but even common operations may be logged, and less helpful but more quantity of notices.
+ * Trace: Anything goes, from logging every function call as part of a common operation, to tracing execution of a query.
+
diff --git a/vendor/github.com/coreos/pkg/capnslog/formatters.go b/vendor/github.com/coreos/pkg/capnslog/formatters.go
new file mode 100644
index 0000000..b305a84
--- /dev/null
+++ b/vendor/github.com/coreos/pkg/capnslog/formatters.go
@@ -0,0 +1,157 @@
+// Copyright 2015 CoreOS, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package capnslog
+
+import (
+ "bufio"
+ "fmt"
+ "io"
+ "log"
+ "runtime"
+ "strings"
+ "time"
+)
+
+type Formatter interface {
+ Format(pkg string, level LogLevel, depth int, entries ...interface{})
+ Flush()
+}
+
+func NewStringFormatter(w io.Writer) Formatter {
+ return &StringFormatter{
+ w: bufio.NewWriter(w),
+ }
+}
+
+type StringFormatter struct {
+ w *bufio.Writer
+}
+
+func (s *StringFormatter) Format(pkg string, l LogLevel, i int, entries ...interface{}) {
+ now := time.Now().UTC()
+ s.w.WriteString(now.Format(time.RFC3339))
+ s.w.WriteByte(' ')
+ writeEntries(s.w, pkg, l, i, entries...)
+ s.Flush()
+}
+
+func writeEntries(w *bufio.Writer, pkg string, _ LogLevel, _ int, entries ...interface{}) {
+ if pkg != "" {
+ w.WriteString(pkg + ": ")
+ }
+ str := fmt.Sprint(entries...)
+ endsInNL := strings.HasSuffix(str, "\n")
+ w.WriteString(str)
+ if !endsInNL {
+ w.WriteString("\n")
+ }
+}
+
+func (s *StringFormatter) Flush() {
+ s.w.Flush()
+}
+
+func NewPrettyFormatter(w io.Writer, debug bool) Formatter {
+ return &PrettyFormatter{
+ w: bufio.NewWriter(w),
+ debug: debug,
+ }
+}
+
+type PrettyFormatter struct {
+ w *bufio.Writer
+ debug bool
+}
+
+func (c *PrettyFormatter) Format(pkg string, l LogLevel, depth int, entries ...interface{}) {
+ now := time.Now()
+ ts := now.Format("2006-01-02 15:04:05")
+ c.w.WriteString(ts)
+ ms := now.Nanosecond() / 1000
+ c.w.WriteString(fmt.Sprintf(".%06d", ms))
+ if c.debug {
+ _, file, line, ok := runtime.Caller(depth) // It's always the same number of frames to the user's call.
+ if !ok {
+ file = "???"
+ line = 1
+ } else {
+ slash := strings.LastIndex(file, "/")
+ if slash >= 0 {
+ file = file[slash+1:]
+ }
+ }
+ if line < 0 {
+ line = 0 // not a real line number
+ }
+ c.w.WriteString(fmt.Sprintf(" [%s:%d]", file, line))
+ }
+ c.w.WriteString(fmt.Sprint(" ", l.Char(), " | "))
+ writeEntries(c.w, pkg, l, depth, entries...)
+ c.Flush()
+}
+
+func (c *PrettyFormatter) Flush() {
+ c.w.Flush()
+}
+
+// LogFormatter emulates the form of the traditional built-in logger.
+type LogFormatter struct {
+ logger *log.Logger
+ prefix string
+}
+
+// NewLogFormatter is a helper to produce a new LogFormatter struct. It uses the
+// golang log package to actually do the logging work so that logs look similar.
+func NewLogFormatter(w io.Writer, prefix string, flag int) Formatter {
+ return &LogFormatter{
+ logger: log.New(w, "", flag), // don't use prefix here
+ prefix: prefix, // save it instead
+ }
+}
+
+// Format builds a log message for the LogFormatter. The LogLevel is ignored.
+func (lf *LogFormatter) Format(pkg string, _ LogLevel, _ int, entries ...interface{}) {
+ str := fmt.Sprint(entries...)
+ prefix := lf.prefix
+ if pkg != "" {
+ prefix = fmt.Sprintf("%s%s: ", prefix, pkg)
+ }
+ lf.logger.Output(5, fmt.Sprintf("%s%v", prefix, str)) // call depth is 5
+}
+
+// Flush is included so that the interface is complete, but is a no-op.
+func (lf *LogFormatter) Flush() {
+ // noop
+}
+
+// NilFormatter is a no-op log formatter that does nothing.
+type NilFormatter struct {
+}
+
+// NewNilFormatter is a helper to produce a new LogFormatter struct. It logs no
+// messages so that you can cause part of your logging to be silent.
+func NewNilFormatter() Formatter {
+ return &NilFormatter{}
+}
+
+// Format does nothing.
+func (_ *NilFormatter) Format(_ string, _ LogLevel, _ int, _ ...interface{}) {
+ // noop
+}
+
+// Flush is included so that the interface is complete, but is a no-op.
+func (_ *NilFormatter) Flush() {
+ // noop
+}
diff --git a/vendor/github.com/coreos/pkg/capnslog/glog_formatter.go b/vendor/github.com/coreos/pkg/capnslog/glog_formatter.go
new file mode 100644
index 0000000..426603e
--- /dev/null
+++ b/vendor/github.com/coreos/pkg/capnslog/glog_formatter.go
@@ -0,0 +1,96 @@
+// Copyright 2015 CoreOS, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package capnslog
+
+import (
+ "bufio"
+ "bytes"
+ "io"
+ "os"
+ "runtime"
+ "strconv"
+ "strings"
+ "time"
+)
+
+var pid = os.Getpid()
+
+type GlogFormatter struct {
+ StringFormatter
+}
+
+func NewGlogFormatter(w io.Writer) *GlogFormatter {
+ g := &GlogFormatter{}
+ g.w = bufio.NewWriter(w)
+ return g
+}
+
+func (g GlogFormatter) Format(pkg string, level LogLevel, depth int, entries ...interface{}) {
+ g.w.Write(GlogHeader(level, depth+1))
+ g.StringFormatter.Format(pkg, level, depth+1, entries...)
+}
+
+func GlogHeader(level LogLevel, depth int) []byte {
+ // Lmmdd hh:mm:ss.uuuuuu threadid file:line]
+ now := time.Now().UTC()
+ _, file, line, ok := runtime.Caller(depth) // It's always the same number of frames to the user's call.
+ if !ok {
+ file = "???"
+ line = 1
+ } else {
+ slash := strings.LastIndex(file, "/")
+ if slash >= 0 {
+ file = file[slash+1:]
+ }
+ }
+ if line < 0 {
+ line = 0 // not a real line number
+ }
+ buf := &bytes.Buffer{}
+ buf.Grow(30)
+ _, month, day := now.Date()
+ hour, minute, second := now.Clock()
+ buf.WriteString(level.Char())
+ twoDigits(buf, int(month))
+ twoDigits(buf, day)
+ buf.WriteByte(' ')
+ twoDigits(buf, hour)
+ buf.WriteByte(':')
+ twoDigits(buf, minute)
+ buf.WriteByte(':')
+ twoDigits(buf, second)
+ buf.WriteByte('.')
+ buf.WriteString(strconv.Itoa(now.Nanosecond() / 1000))
+ buf.WriteByte('Z')
+ buf.WriteByte(' ')
+ buf.WriteString(strconv.Itoa(pid))
+ buf.WriteByte(' ')
+ buf.WriteString(file)
+ buf.WriteByte(':')
+ buf.WriteString(strconv.Itoa(line))
+ buf.WriteByte(']')
+ buf.WriteByte(' ')
+ return buf.Bytes()
+}
+
+const digits = "0123456789"
+
+func twoDigits(b *bytes.Buffer, d int) {
+ c2 := digits[d%10]
+ d /= 10
+ c1 := digits[d%10]
+ b.WriteByte(c1)
+ b.WriteByte(c2)
+}
diff --git a/vendor/github.com/coreos/pkg/capnslog/init.go b/vendor/github.com/coreos/pkg/capnslog/init.go
new file mode 100644
index 0000000..44b8cd3
--- /dev/null
+++ b/vendor/github.com/coreos/pkg/capnslog/init.go
@@ -0,0 +1,49 @@
+// Copyright 2015 CoreOS, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// +build !windows
+
+package capnslog
+
+import (
+ "io"
+ "os"
+ "syscall"
+)
+
+// Here's where the opinionation comes in. We need some sensible defaults,
+// especially after taking over the log package. Your project (whatever it may
+// be) may see things differently. That's okay; there should be no defaults in
+// the main package that cannot be controlled or overridden programatically,
+// otherwise it's a bug. Doing so is creating your own init_log.go file much
+// like this one.
+
+func init() {
+ initHijack()
+
+ // Go `log` pacakge uses os.Stderr.
+ SetFormatter(NewDefaultFormatter(os.Stderr))
+ SetGlobalLogLevel(INFO)
+}
+
+func NewDefaultFormatter(out io.Writer) Formatter {
+ if syscall.Getppid() == 1 {
+ // We're running under init, which may be systemd.
+ f, err := NewJournaldFormatter()
+ if err == nil {
+ return f
+ }
+ }
+ return NewPrettyFormatter(out, false)
+}
diff --git a/vendor/github.com/coreos/pkg/capnslog/init_windows.go b/vendor/github.com/coreos/pkg/capnslog/init_windows.go
new file mode 100644
index 0000000..4553050
--- /dev/null
+++ b/vendor/github.com/coreos/pkg/capnslog/init_windows.go
@@ -0,0 +1,25 @@
+// Copyright 2015 CoreOS, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package capnslog
+
+import "os"
+
+func init() {
+ initHijack()
+
+ // Go `log` package uses os.Stderr.
+ SetFormatter(NewPrettyFormatter(os.Stderr, false))
+ SetGlobalLogLevel(INFO)
+}
diff --git a/vendor/github.com/coreos/pkg/capnslog/journald_formatter.go b/vendor/github.com/coreos/pkg/capnslog/journald_formatter.go
new file mode 100644
index 0000000..72e0520
--- /dev/null
+++ b/vendor/github.com/coreos/pkg/capnslog/journald_formatter.go
@@ -0,0 +1,68 @@
+// Copyright 2015 CoreOS, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// +build !windows
+
+package capnslog
+
+import (
+ "errors"
+ "fmt"
+ "os"
+ "path/filepath"
+
+ "github.com/coreos/go-systemd/journal"
+)
+
+func NewJournaldFormatter() (Formatter, error) {
+ if !journal.Enabled() {
+ return nil, errors.New("No systemd detected")
+ }
+ return &journaldFormatter{}, nil
+}
+
+type journaldFormatter struct{}
+
+func (j *journaldFormatter) Format(pkg string, l LogLevel, _ int, entries ...interface{}) {
+ var pri journal.Priority
+ switch l {
+ case CRITICAL:
+ pri = journal.PriCrit
+ case ERROR:
+ pri = journal.PriErr
+ case WARNING:
+ pri = journal.PriWarning
+ case NOTICE:
+ pri = journal.PriNotice
+ case INFO:
+ pri = journal.PriInfo
+ case DEBUG:
+ pri = journal.PriDebug
+ case TRACE:
+ pri = journal.PriDebug
+ default:
+ panic("Unhandled loglevel")
+ }
+ msg := fmt.Sprint(entries...)
+ tags := map[string]string{
+ "PACKAGE": pkg,
+ "SYSLOG_IDENTIFIER": filepath.Base(os.Args[0]),
+ }
+ err := journal.Send(msg, pri, tags)
+ if err != nil {
+ fmt.Fprintln(os.Stderr, err)
+ }
+}
+
+func (j *journaldFormatter) Flush() {}
diff --git a/vendor/github.com/coreos/pkg/capnslog/log_hijack.go b/vendor/github.com/coreos/pkg/capnslog/log_hijack.go
new file mode 100644
index 0000000..970086b
--- /dev/null
+++ b/vendor/github.com/coreos/pkg/capnslog/log_hijack.go
@@ -0,0 +1,39 @@
+// Copyright 2015 CoreOS, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package capnslog
+
+import (
+ "log"
+)
+
+func initHijack() {
+ pkg := NewPackageLogger("log", "")
+ w := packageWriter{pkg}
+ log.SetFlags(0)
+ log.SetPrefix("")
+ log.SetOutput(w)
+}
+
+type packageWriter struct {
+ pl *PackageLogger
+}
+
+func (p packageWriter) Write(b []byte) (int, error) {
+ if p.pl.level < INFO {
+ return 0, nil
+ }
+ p.pl.internalLog(calldepth+2, INFO, string(b))
+ return len(b), nil
+}
diff --git a/vendor/github.com/coreos/pkg/capnslog/logmap.go b/vendor/github.com/coreos/pkg/capnslog/logmap.go
new file mode 100644
index 0000000..226b60c
--- /dev/null
+++ b/vendor/github.com/coreos/pkg/capnslog/logmap.go
@@ -0,0 +1,245 @@
+// Copyright 2015 CoreOS, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package capnslog
+
+import (
+ "errors"
+ "strings"
+ "sync"
+)
+
+// LogLevel is the set of all log levels.
+type LogLevel int8
+
+const (
+ // CRITICAL is the lowest log level; only errors which will end the program will be propagated.
+ CRITICAL LogLevel = iota - 1
+ // ERROR is for errors that are not fatal but lead to troubling behavior.
+ ERROR
+ // WARNING is for errors which are not fatal and not errors, but are unusual. Often sourced from misconfigurations.
+ WARNING
+ // NOTICE is for normal but significant conditions.
+ NOTICE
+ // INFO is a log level for common, everyday log updates.
+ INFO
+ // DEBUG is the default hidden level for more verbose updates about internal processes.
+ DEBUG
+ // TRACE is for (potentially) call by call tracing of programs.
+ TRACE
+)
+
+// Char returns a single-character representation of the log level.
+func (l LogLevel) Char() string {
+ switch l {
+ case CRITICAL:
+ return "C"
+ case ERROR:
+ return "E"
+ case WARNING:
+ return "W"
+ case NOTICE:
+ return "N"
+ case INFO:
+ return "I"
+ case DEBUG:
+ return "D"
+ case TRACE:
+ return "T"
+ default:
+ panic("Unhandled loglevel")
+ }
+}
+
+// String returns a multi-character representation of the log level.
+func (l LogLevel) String() string {
+ switch l {
+ case CRITICAL:
+ return "CRITICAL"
+ case ERROR:
+ return "ERROR"
+ case WARNING:
+ return "WARNING"
+ case NOTICE:
+ return "NOTICE"
+ case INFO:
+ return "INFO"
+ case DEBUG:
+ return "DEBUG"
+ case TRACE:
+ return "TRACE"
+ default:
+ panic("Unhandled loglevel")
+ }
+}
+
+// Update using the given string value. Fulfills the flag.Value interface.
+func (l *LogLevel) Set(s string) error {
+ value, err := ParseLevel(s)
+ if err != nil {
+ return err
+ }
+
+ *l = value
+ return nil
+}
+
+// Returns an empty string, only here to fulfill the pflag.Value interface.
+func (l *LogLevel) Type() string {
+ return ""
+}
+
+// ParseLevel translates some potential loglevel strings into their corresponding levels.
+func ParseLevel(s string) (LogLevel, error) {
+ switch s {
+ case "CRITICAL", "C":
+ return CRITICAL, nil
+ case "ERROR", "0", "E":
+ return ERROR, nil
+ case "WARNING", "1", "W":
+ return WARNING, nil
+ case "NOTICE", "2", "N":
+ return NOTICE, nil
+ case "INFO", "3", "I":
+ return INFO, nil
+ case "DEBUG", "4", "D":
+ return DEBUG, nil
+ case "TRACE", "5", "T":
+ return TRACE, nil
+ }
+ return CRITICAL, errors.New("couldn't parse log level " + s)
+}
+
+type RepoLogger map[string]*PackageLogger
+
+type loggerStruct struct {
+ sync.Mutex
+ repoMap map[string]RepoLogger
+ formatter Formatter
+}
+
+// logger is the global logger
+var logger = new(loggerStruct)
+
+// SetGlobalLogLevel sets the log level for all packages in all repositories
+// registered with capnslog.
+func SetGlobalLogLevel(l LogLevel) {
+ logger.Lock()
+ defer logger.Unlock()
+ for _, r := range logger.repoMap {
+ r.setRepoLogLevelInternal(l)
+ }
+}
+
+// GetRepoLogger may return the handle to the repository's set of packages' loggers.
+func GetRepoLogger(repo string) (RepoLogger, error) {
+ logger.Lock()
+ defer logger.Unlock()
+ r, ok := logger.repoMap[repo]
+ if !ok {
+ return nil, errors.New("no packages registered for repo " + repo)
+ }
+ return r, nil
+}
+
+// MustRepoLogger returns the handle to the repository's packages' loggers.
+func MustRepoLogger(repo string) RepoLogger {
+ r, err := GetRepoLogger(repo)
+ if err != nil {
+ panic(err)
+ }
+ return r
+}
+
+// SetRepoLogLevel sets the log level for all packages in the repository.
+func (r RepoLogger) SetRepoLogLevel(l LogLevel) {
+ logger.Lock()
+ defer logger.Unlock()
+ r.setRepoLogLevelInternal(l)
+}
+
+func (r RepoLogger) setRepoLogLevelInternal(l LogLevel) {
+ for _, v := range r {
+ v.level = l
+ }
+}
+
+// ParseLogLevelConfig parses a comma-separated string of "package=loglevel", in
+// order, and returns a map of the results, for use in SetLogLevel.
+func (r RepoLogger) ParseLogLevelConfig(conf string) (map[string]LogLevel, error) {
+ setlist := strings.Split(conf, ",")
+ out := make(map[string]LogLevel)
+ for _, setstring := range setlist {
+ setting := strings.Split(setstring, "=")
+ if len(setting) != 2 {
+ return nil, errors.New("oddly structured `pkg=level` option: " + setstring)
+ }
+ l, err := ParseLevel(setting[1])
+ if err != nil {
+ return nil, err
+ }
+ out[setting[0]] = l
+ }
+ return out, nil
+}
+
+// SetLogLevel takes a map of package names within a repository to their desired
+// loglevel, and sets the levels appropriately. Unknown packages are ignored.
+// "*" is a special package name that corresponds to all packages, and will be
+// processed first.
+func (r RepoLogger) SetLogLevel(m map[string]LogLevel) {
+ logger.Lock()
+ defer logger.Unlock()
+ if l, ok := m["*"]; ok {
+ r.setRepoLogLevelInternal(l)
+ }
+ for k, v := range m {
+ l, ok := r[k]
+ if !ok {
+ continue
+ }
+ l.level = v
+ }
+}
+
+// SetFormatter sets the formatting function for all logs.
+func SetFormatter(f Formatter) {
+ logger.Lock()
+ defer logger.Unlock()
+ logger.formatter = f
+}
+
+// NewPackageLogger creates a package logger object.
+// This should be defined as a global var in your package, referencing your repo.
+func NewPackageLogger(repo string, pkg string) (p *PackageLogger) {
+ logger.Lock()
+ defer logger.Unlock()
+ if logger.repoMap == nil {
+ logger.repoMap = make(map[string]RepoLogger)
+ }
+ r, rok := logger.repoMap[repo]
+ if !rok {
+ logger.repoMap[repo] = make(RepoLogger)
+ r = logger.repoMap[repo]
+ }
+ p, pok := r[pkg]
+ if !pok {
+ r[pkg] = &PackageLogger{
+ pkg: pkg,
+ level: INFO,
+ }
+ p = r[pkg]
+ }
+ return
+}
diff --git a/vendor/github.com/coreos/pkg/capnslog/pkg_logger.go b/vendor/github.com/coreos/pkg/capnslog/pkg_logger.go
new file mode 100644
index 0000000..00ff371
--- /dev/null
+++ b/vendor/github.com/coreos/pkg/capnslog/pkg_logger.go
@@ -0,0 +1,191 @@
+// Copyright 2015 CoreOS, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package capnslog
+
+import (
+ "fmt"
+ "os"
+)
+
+type PackageLogger struct {
+ pkg string
+ level LogLevel
+}
+
+const calldepth = 2
+
+func (p *PackageLogger) internalLog(depth int, inLevel LogLevel, entries ...interface{}) {
+ logger.Lock()
+ defer logger.Unlock()
+ if inLevel != CRITICAL && p.level < inLevel {
+ return
+ }
+ if logger.formatter != nil {
+ logger.formatter.Format(p.pkg, inLevel, depth+1, entries...)
+ }
+}
+
+// SetLevel allows users to change the current logging level.
+func (p *PackageLogger) SetLevel(l LogLevel) {
+ logger.Lock()
+ defer logger.Unlock()
+ p.level = l
+}
+
+// LevelAt checks if the given log level will be outputted under current setting.
+func (p *PackageLogger) LevelAt(l LogLevel) bool {
+ logger.Lock()
+ defer logger.Unlock()
+ return p.level >= l
+}
+
+// Log a formatted string at any level between ERROR and TRACE
+func (p *PackageLogger) Logf(l LogLevel, format string, args ...interface{}) {
+ p.internalLog(calldepth, l, fmt.Sprintf(format, args...))
+}
+
+// Log a message at any level between ERROR and TRACE
+func (p *PackageLogger) Log(l LogLevel, args ...interface{}) {
+ p.internalLog(calldepth, l, fmt.Sprint(args...))
+}
+
+// log stdlib compatibility
+
+func (p *PackageLogger) Println(args ...interface{}) {
+ p.internalLog(calldepth, INFO, fmt.Sprintln(args...))
+}
+
+func (p *PackageLogger) Printf(format string, args ...interface{}) {
+ p.Logf(INFO, format, args...)
+}
+
+func (p *PackageLogger) Print(args ...interface{}) {
+ p.internalLog(calldepth, INFO, fmt.Sprint(args...))
+}
+
+// Panic and fatal
+
+func (p *PackageLogger) Panicf(format string, args ...interface{}) {
+ s := fmt.Sprintf(format, args...)
+ p.internalLog(calldepth, CRITICAL, s)
+ panic(s)
+}
+
+func (p *PackageLogger) Panic(args ...interface{}) {
+ s := fmt.Sprint(args...)
+ p.internalLog(calldepth, CRITICAL, s)
+ panic(s)
+}
+
+func (p *PackageLogger) Panicln(args ...interface{}) {
+ s := fmt.Sprintln(args...)
+ p.internalLog(calldepth, CRITICAL, s)
+ panic(s)
+}
+
+func (p *PackageLogger) Fatalf(format string, args ...interface{}) {
+ p.Logf(CRITICAL, format, args...)
+ os.Exit(1)
+}
+
+func (p *PackageLogger) Fatal(args ...interface{}) {
+ s := fmt.Sprint(args...)
+ p.internalLog(calldepth, CRITICAL, s)
+ os.Exit(1)
+}
+
+func (p *PackageLogger) Fatalln(args ...interface{}) {
+ s := fmt.Sprintln(args...)
+ p.internalLog(calldepth, CRITICAL, s)
+ os.Exit(1)
+}
+
+// Error Functions
+
+func (p *PackageLogger) Errorf(format string, args ...interface{}) {
+ p.Logf(ERROR, format, args...)
+}
+
+func (p *PackageLogger) Error(entries ...interface{}) {
+ p.internalLog(calldepth, ERROR, entries...)
+}
+
+// Warning Functions
+
+func (p *PackageLogger) Warningf(format string, args ...interface{}) {
+ p.Logf(WARNING, format, args...)
+}
+
+func (p *PackageLogger) Warning(entries ...interface{}) {
+ p.internalLog(calldepth, WARNING, entries...)
+}
+
+// Notice Functions
+
+func (p *PackageLogger) Noticef(format string, args ...interface{}) {
+ p.Logf(NOTICE, format, args...)
+}
+
+func (p *PackageLogger) Notice(entries ...interface{}) {
+ p.internalLog(calldepth, NOTICE, entries...)
+}
+
+// Info Functions
+
+func (p *PackageLogger) Infof(format string, args ...interface{}) {
+ p.Logf(INFO, format, args...)
+}
+
+func (p *PackageLogger) Info(entries ...interface{}) {
+ p.internalLog(calldepth, INFO, entries...)
+}
+
+// Debug Functions
+
+func (p *PackageLogger) Debugf(format string, args ...interface{}) {
+ if p.level < DEBUG {
+ return
+ }
+ p.Logf(DEBUG, format, args...)
+}
+
+func (p *PackageLogger) Debug(entries ...interface{}) {
+ if p.level < DEBUG {
+ return
+ }
+ p.internalLog(calldepth, DEBUG, entries...)
+}
+
+// Trace Functions
+
+func (p *PackageLogger) Tracef(format string, args ...interface{}) {
+ if p.level < TRACE {
+ return
+ }
+ p.Logf(TRACE, format, args...)
+}
+
+func (p *PackageLogger) Trace(entries ...interface{}) {
+ if p.level < TRACE {
+ return
+ }
+ p.internalLog(calldepth, TRACE, entries...)
+}
+
+func (p *PackageLogger) Flush() {
+ logger.Lock()
+ defer logger.Unlock()
+ logger.formatter.Flush()
+}
diff --git a/vendor/github.com/coreos/pkg/capnslog/syslog_formatter.go b/vendor/github.com/coreos/pkg/capnslog/syslog_formatter.go
new file mode 100644
index 0000000..4be5a1f
--- /dev/null
+++ b/vendor/github.com/coreos/pkg/capnslog/syslog_formatter.go
@@ -0,0 +1,65 @@
+// Copyright 2015 CoreOS, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+// +build !windows
+
+package capnslog
+
+import (
+ "fmt"
+ "log/syslog"
+)
+
+func NewSyslogFormatter(w *syslog.Writer) Formatter {
+ return &syslogFormatter{w}
+}
+
+func NewDefaultSyslogFormatter(tag string) (Formatter, error) {
+ w, err := syslog.New(syslog.LOG_DEBUG, tag)
+ if err != nil {
+ return nil, err
+ }
+ return NewSyslogFormatter(w), nil
+}
+
+type syslogFormatter struct {
+ w *syslog.Writer
+}
+
+func (s *syslogFormatter) Format(pkg string, l LogLevel, _ int, entries ...interface{}) {
+ for _, entry := range entries {
+ str := fmt.Sprint(entry)
+ switch l {
+ case CRITICAL:
+ s.w.Crit(str)
+ case ERROR:
+ s.w.Err(str)
+ case WARNING:
+ s.w.Warning(str)
+ case NOTICE:
+ s.w.Notice(str)
+ case INFO:
+ s.w.Info(str)
+ case DEBUG:
+ s.w.Debug(str)
+ case TRACE:
+ s.w.Debug(str)
+ default:
+ panic("Unhandled loglevel")
+ }
+ }
+}
+
+func (s *syslogFormatter) Flush() {
+}