mirror of
https://github.com/letic/terraform-provider-google.git
synced 2024-09-19 09:39:59 +00:00
961c878e0d
Switch to using Go modules. This migrates our vendor.json to use Go 1.11's modules system, and replaces the vendor folder with the output of go mod vendor. The vendored code should remain basically the same; I believe some tree shaking of packages and support scripts/licenses/READMEs/etc. happened. This also fixes Travis and our Makefile to no longer use govendor.
508 lines
11 KiB
Go
508 lines
11 KiB
Go
package hclog
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import (
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"bufio"
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"bytes"
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"encoding"
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"encoding/json"
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"fmt"
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"log"
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"os"
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"reflect"
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"runtime"
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"sort"
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"strconv"
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"strings"
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"sync"
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"sync/atomic"
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"time"
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)
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var (
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_levelToBracket = map[Level]string{
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Debug: "[DEBUG]",
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Trace: "[TRACE]",
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Info: "[INFO] ",
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Warn: "[WARN] ",
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Error: "[ERROR]",
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}
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)
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// Given the options (nil for defaults), create a new Logger
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func New(opts *LoggerOptions) Logger {
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if opts == nil {
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opts = &LoggerOptions{}
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}
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output := opts.Output
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if output == nil {
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output = os.Stderr
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}
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level := opts.Level
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if level == NoLevel {
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level = DefaultLevel
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}
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mtx := opts.Mutex
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if mtx == nil {
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mtx = new(sync.Mutex)
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}
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ret := &intLogger{
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m: mtx,
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json: opts.JSONFormat,
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caller: opts.IncludeLocation,
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name: opts.Name,
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timeFormat: TimeFormat,
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w: bufio.NewWriter(output),
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level: new(int32),
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}
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if opts.TimeFormat != "" {
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ret.timeFormat = opts.TimeFormat
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}
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atomic.StoreInt32(ret.level, int32(level))
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return ret
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}
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// The internal logger implementation. Internal in that it is defined entirely
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// by this package.
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type intLogger struct {
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json bool
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caller bool
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name string
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timeFormat string
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// this is a pointer so that it's shared by any derived loggers, since
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// those derived loggers share the bufio.Writer as well.
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m *sync.Mutex
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w *bufio.Writer
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level *int32
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implied []interface{}
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}
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// Make sure that intLogger is a Logger
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var _ Logger = &intLogger{}
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// The time format to use for logging. This is a version of RFC3339 that
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// contains millisecond precision
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const TimeFormat = "2006-01-02T15:04:05.000Z0700"
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// Log a message and a set of key/value pairs if the given level is at
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// or more severe that the threshold configured in the Logger.
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func (z *intLogger) Log(level Level, msg string, args ...interface{}) {
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if level < Level(atomic.LoadInt32(z.level)) {
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return
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}
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t := time.Now()
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z.m.Lock()
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defer z.m.Unlock()
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if z.json {
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z.logJson(t, level, msg, args...)
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} else {
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z.log(t, level, msg, args...)
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}
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z.w.Flush()
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}
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// Cleanup a path by returning the last 2 segments of the path only.
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func trimCallerPath(path string) string {
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// lovely borrowed from zap
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// nb. To make sure we trim the path correctly on Windows too, we
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// counter-intuitively need to use '/' and *not* os.PathSeparator here,
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// because the path given originates from Go stdlib, specifically
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// runtime.Caller() which (as of Mar/17) returns forward slashes even on
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// Windows.
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//
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// See https://github.com/golang/go/issues/3335
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// and https://github.com/golang/go/issues/18151
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//
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// for discussion on the issue on Go side.
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//
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// Find the last separator.
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//
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idx := strings.LastIndexByte(path, '/')
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if idx == -1 {
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return path
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}
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// Find the penultimate separator.
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idx = strings.LastIndexByte(path[:idx], '/')
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if idx == -1 {
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return path
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}
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return path[idx+1:]
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}
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// Non-JSON logging format function
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func (z *intLogger) log(t time.Time, level Level, msg string, args ...interface{}) {
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z.w.WriteString(t.Format(z.timeFormat))
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z.w.WriteByte(' ')
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s, ok := _levelToBracket[level]
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if ok {
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z.w.WriteString(s)
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} else {
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z.w.WriteString("[?????]")
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}
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if z.caller {
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if _, file, line, ok := runtime.Caller(3); ok {
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z.w.WriteByte(' ')
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z.w.WriteString(trimCallerPath(file))
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z.w.WriteByte(':')
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z.w.WriteString(strconv.Itoa(line))
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z.w.WriteByte(':')
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}
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}
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z.w.WriteByte(' ')
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if z.name != "" {
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z.w.WriteString(z.name)
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z.w.WriteString(": ")
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}
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z.w.WriteString(msg)
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args = append(z.implied, args...)
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var stacktrace CapturedStacktrace
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if args != nil && len(args) > 0 {
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if len(args)%2 != 0 {
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cs, ok := args[len(args)-1].(CapturedStacktrace)
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if ok {
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args = args[:len(args)-1]
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stacktrace = cs
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} else {
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args = append(args, "<unknown>")
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}
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}
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z.w.WriteByte(':')
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FOR:
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for i := 0; i < len(args); i = i + 2 {
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var (
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val string
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raw bool
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)
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switch st := args[i+1].(type) {
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case string:
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val = st
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case int:
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val = strconv.FormatInt(int64(st), 10)
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case int64:
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val = strconv.FormatInt(int64(st), 10)
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case int32:
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val = strconv.FormatInt(int64(st), 10)
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case int16:
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val = strconv.FormatInt(int64(st), 10)
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case int8:
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val = strconv.FormatInt(int64(st), 10)
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case uint:
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val = strconv.FormatUint(uint64(st), 10)
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case uint64:
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val = strconv.FormatUint(uint64(st), 10)
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case uint32:
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val = strconv.FormatUint(uint64(st), 10)
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case uint16:
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val = strconv.FormatUint(uint64(st), 10)
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case uint8:
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val = strconv.FormatUint(uint64(st), 10)
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case CapturedStacktrace:
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stacktrace = st
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continue FOR
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case Format:
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val = fmt.Sprintf(st[0].(string), st[1:]...)
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default:
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v := reflect.ValueOf(st)
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if v.Kind() == reflect.Slice {
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val = z.renderSlice(v)
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raw = true
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} else {
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val = fmt.Sprintf("%v", st)
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}
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}
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z.w.WriteByte(' ')
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z.w.WriteString(args[i].(string))
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z.w.WriteByte('=')
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if !raw && strings.ContainsAny(val, " \t\n\r") {
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z.w.WriteByte('"')
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z.w.WriteString(val)
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z.w.WriteByte('"')
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} else {
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z.w.WriteString(val)
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}
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}
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}
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z.w.WriteString("\n")
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if stacktrace != "" {
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z.w.WriteString(string(stacktrace))
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}
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}
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func (z *intLogger) renderSlice(v reflect.Value) string {
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var buf bytes.Buffer
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buf.WriteRune('[')
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for i := 0; i < v.Len(); i++ {
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if i > 0 {
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buf.WriteString(", ")
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}
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sv := v.Index(i)
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var val string
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switch sv.Kind() {
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case reflect.String:
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val = sv.String()
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case reflect.Int, reflect.Int16, reflect.Int32, reflect.Int64:
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val = strconv.FormatInt(sv.Int(), 10)
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case reflect.Uint, reflect.Uint16, reflect.Uint32, reflect.Uint64:
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val = strconv.FormatUint(sv.Uint(), 10)
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default:
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val = fmt.Sprintf("%v", sv.Interface())
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}
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if strings.ContainsAny(val, " \t\n\r") {
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buf.WriteByte('"')
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buf.WriteString(val)
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buf.WriteByte('"')
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} else {
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buf.WriteString(val)
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}
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}
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buf.WriteRune(']')
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return buf.String()
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}
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// JSON logging function
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func (z *intLogger) logJson(t time.Time, level Level, msg string, args ...interface{}) {
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vals := map[string]interface{}{
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"@message": msg,
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"@timestamp": t.Format("2006-01-02T15:04:05.000000Z07:00"),
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}
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var levelStr string
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switch level {
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case Error:
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levelStr = "error"
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case Warn:
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levelStr = "warn"
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case Info:
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levelStr = "info"
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case Debug:
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levelStr = "debug"
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case Trace:
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levelStr = "trace"
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default:
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levelStr = "all"
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}
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vals["@level"] = levelStr
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if z.name != "" {
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vals["@module"] = z.name
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}
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if z.caller {
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if _, file, line, ok := runtime.Caller(3); ok {
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vals["@caller"] = fmt.Sprintf("%s:%d", file, line)
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}
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}
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args = append(z.implied, args...)
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if args != nil && len(args) > 0 {
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if len(args)%2 != 0 {
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cs, ok := args[len(args)-1].(CapturedStacktrace)
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if ok {
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args = args[:len(args)-1]
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vals["stacktrace"] = cs
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} else {
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args = append(args, "<unknown>")
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}
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}
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for i := 0; i < len(args); i = i + 2 {
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if _, ok := args[i].(string); !ok {
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// As this is the logging function not much we can do here
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// without injecting into logs...
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continue
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}
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val := args[i+1]
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switch sv := val.(type) {
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case error:
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// Check if val is of type error. If error type doesn't
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// implement json.Marshaler or encoding.TextMarshaler
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// then set val to err.Error() so that it gets marshaled
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switch sv.(type) {
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case json.Marshaler, encoding.TextMarshaler:
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default:
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val = sv.Error()
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}
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case Format:
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val = fmt.Sprintf(sv[0].(string), sv[1:]...)
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}
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vals[args[i].(string)] = val
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}
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}
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err := json.NewEncoder(z.w).Encode(vals)
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if err != nil {
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panic(err)
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}
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}
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// Emit the message and args at DEBUG level
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func (z *intLogger) Debug(msg string, args ...interface{}) {
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z.Log(Debug, msg, args...)
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}
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// Emit the message and args at TRACE level
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func (z *intLogger) Trace(msg string, args ...interface{}) {
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z.Log(Trace, msg, args...)
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}
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// Emit the message and args at INFO level
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func (z *intLogger) Info(msg string, args ...interface{}) {
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z.Log(Info, msg, args...)
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}
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// Emit the message and args at WARN level
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func (z *intLogger) Warn(msg string, args ...interface{}) {
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z.Log(Warn, msg, args...)
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}
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// Emit the message and args at ERROR level
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func (z *intLogger) Error(msg string, args ...interface{}) {
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z.Log(Error, msg, args...)
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}
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// Indicate that the logger would emit TRACE level logs
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func (z *intLogger) IsTrace() bool {
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return Level(atomic.LoadInt32(z.level)) == Trace
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}
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// Indicate that the logger would emit DEBUG level logs
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func (z *intLogger) IsDebug() bool {
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return Level(atomic.LoadInt32(z.level)) <= Debug
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}
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// Indicate that the logger would emit INFO level logs
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func (z *intLogger) IsInfo() bool {
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return Level(atomic.LoadInt32(z.level)) <= Info
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}
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// Indicate that the logger would emit WARN level logs
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func (z *intLogger) IsWarn() bool {
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return Level(atomic.LoadInt32(z.level)) <= Warn
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}
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// Indicate that the logger would emit ERROR level logs
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func (z *intLogger) IsError() bool {
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return Level(atomic.LoadInt32(z.level)) <= Error
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}
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// Return a sub-Logger for which every emitted log message will contain
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// the given key/value pairs. This is used to create a context specific
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// Logger.
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func (z *intLogger) With(args ...interface{}) Logger {
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if len(args)%2 != 0 {
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panic("With() call requires paired arguments")
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}
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var nz intLogger = *z
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result := make(map[string]interface{}, len(z.implied)+len(args))
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keys := make([]string, 0, len(z.implied)+len(args))
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// Read existing args, store map and key for consistent sorting
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for i := 0; i < len(z.implied); i += 2 {
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key := z.implied[i].(string)
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keys = append(keys, key)
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result[key] = z.implied[i+1]
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}
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// Read new args, store map and key for consistent sorting
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for i := 0; i < len(args); i += 2 {
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key := args[i].(string)
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_, exists := result[key]
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if !exists {
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keys = append(keys, key)
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}
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result[key] = args[i+1]
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}
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// Sort keys to be consistent
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sort.Strings(keys)
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nz.implied = make([]interface{}, 0, len(z.implied)+len(args))
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for _, k := range keys {
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nz.implied = append(nz.implied, k)
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nz.implied = append(nz.implied, result[k])
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}
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return &nz
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}
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// Create a new sub-Logger that a name decending from the current name.
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// This is used to create a subsystem specific Logger.
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func (z *intLogger) Named(name string) Logger {
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var nz intLogger = *z
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if nz.name != "" {
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nz.name = nz.name + "." + name
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} else {
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nz.name = name
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}
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return &nz
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}
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// Create a new sub-Logger with an explicit name. This ignores the current
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// name. This is used to create a standalone logger that doesn't fall
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// within the normal hierarchy.
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func (z *intLogger) ResetNamed(name string) Logger {
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var nz intLogger = *z
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nz.name = name
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return &nz
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}
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// Update the logging level on-the-fly. This will affect all subloggers as
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// well.
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func (z *intLogger) SetLevel(level Level) {
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atomic.StoreInt32(z.level, int32(level))
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}
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// Create a *log.Logger that will send it's data through this Logger. This
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// allows packages that expect to be using the standard library log to actually
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// use this logger.
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func (z *intLogger) StandardLogger(opts *StandardLoggerOptions) *log.Logger {
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if opts == nil {
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opts = &StandardLoggerOptions{}
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}
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return log.New(&stdlogAdapter{z, opts.InferLevels}, "", 0)
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}
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