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[feature] Add a request ID and include it in logs (#1476)

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This adds a lightweight form of tracing to GTS. Each incoming request is
assigned a Request ID which we then pass on and log in all our log
lines. Any function that gets called downstream from an HTTP handler
should now emit a requestID=value pair whenever it logs something.

Co-authored-by: kim <grufwub@gmail.com>
This commit is contained in:
Daenney 2023-02-17 12:02:29 +01:00 • committed by GitHub
commit 68e6d08c76
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118 changed files with 813 additions and 591 deletions
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92
internal/log/log.go
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@ -19,6 +19,7 @@
package log
import (
"context"
"fmt"
"log/syslog"
"os"
@ -38,13 +39,21 @@ var (
// lvlstrs is the lookup table of log levels to strings.
lvlstrs = level.Default()
// Syslog output, only set if enabled.
// syslog output, only set if enabled.
sysout *syslog.Writer
// timefmt is the logging time format used.
timefmt = "02/01/2006 15:04:05.000"
// ctxhooks allows modifying log content based on context.
ctxhooks []func(context.Context, []kv.Field) []kv.Field
)
// Hook adds the given hook to the global logger context hooks stack.
func Hook(hook func(ctx context.Context, kvs []kv.Field) []kv.Field) {
ctxhooks = append(ctxhooks, hook)
}
// Level returns the currently set log level.
func Level() level.LEVEL {
return level.LEVEL(loglvl.Load())
@ -60,82 +69,86 @@ func New() Entry {
return Entry{}
}
func WithContext(ctx context.Context) Entry {
return Entry{ctx: ctx}
}
func WithField(key string, value interface{}) Entry {
return Entry{fields: []kv.Field{{K: key, V: value}}}
return New().WithField(key, value)
}
func WithFields(fields ...kv.Field) Entry {
return Entry{fields: fields}
return New().WithFields(fields...)
}
func Trace(a ...interface{}) {
logf(3, level.TRACE, nil, args(len(a)), a...)
func Trace(ctx context.Context, a ...interface{}) {
logf(ctx, 3, level.TRACE, nil, args(len(a)), a...)
}
func Tracef(s string, a ...interface{}) {
logf(3, level.TRACE, nil, s, a...)
func Tracef(ctx context.Context, s string, a ...interface{}) {
logf(ctx, 3, level.TRACE, nil, s, a...)
}
func Debug(a ...interface{}) {
logf(3, level.DEBUG, nil, args(len(a)), a...)
func Debug(ctx context.Context, a ...interface{}) {
logf(ctx, 3, level.DEBUG, nil, args(len(a)), a...)
}
func Debugf(s string, a ...interface{}) {
logf(3, level.DEBUG, nil, s, a...)
func Debugf(ctx context.Context, s string, a ...interface{}) {
logf(ctx, 3, level.DEBUG, nil, s, a...)
}
func Info(a ...interface{}) {
logf(3, level.INFO, nil, args(len(a)), a...)
func Info(ctx context.Context, a ...interface{}) {
logf(ctx, 3, level.INFO, nil, args(len(a)), a...)
}
func Infof(s string, a ...interface{}) {
logf(3, level.INFO, nil, s, a...)
func Infof(ctx context.Context, s string, a ...interface{}) {
logf(ctx, 3, level.INFO, nil, s, a...)
}
func Warn(a ...interface{}) {
logf(3, level.WARN, nil, args(len(a)), a...)
func Warn(ctx context.Context, a ...interface{}) {
logf(ctx, 3, level.WARN, nil, args(len(a)), a...)
}
func Warnf(s string, a ...interface{}) {
logf(3, level.WARN, nil, s, a...)
func Warnf(ctx context.Context, s string, a ...interface{}) {
logf(ctx, 3, level.WARN, nil, s, a...)
}
func Error(a ...interface{}) {
logf(3, level.ERROR, nil, args(len(a)), a...)
func Error(ctx context.Context, a ...interface{}) {
logf(ctx, 3, level.ERROR, nil, args(len(a)), a...)
}
func Errorf(s string, a ...interface{}) {
logf(3, level.ERROR, nil, s, a...)
func Errorf(ctx context.Context, s string, a ...interface{}) {
logf(ctx, 3, level.ERROR, nil, s, a...)
}
func Fatal(a ...interface{}) {
func Fatal(ctx context.Context, a ...interface{}) {
defer syscall.Exit(1)
logf(3, level.FATAL, nil, args(len(a)), a...)
logf(ctx, 3, level.FATAL, nil, args(len(a)), a...)
}
func Fatalf(s string, a ...interface{}) {
func Fatalf(ctx context.Context, s string, a ...interface{}) {
defer syscall.Exit(1)
logf(3, level.FATAL, nil, s, a...)
logf(ctx, 3, level.FATAL, nil, s, a...)
}
func Panic(a ...interface{}) {
func Panic(ctx context.Context, a ...interface{}) {
defer panic(fmt.Sprint(a...))
logf(3, level.PANIC, nil, args(len(a)), a...)
logf(ctx, 3, level.PANIC, nil, args(len(a)), a...)
}
func Panicf(s string, a ...interface{}) {
func Panicf(ctx context.Context, s string, a ...interface{}) {
defer panic(fmt.Sprintf(s, a...))
logf(3, level.PANIC, nil, s, a...)
logf(ctx, 3, level.PANIC, nil, s, a...)
}
// Log will log formatted args as 'msg' field to the log at given level.
func Log(lvl level.LEVEL, a ...interface{}) {
logf(3, lvl, nil, args(len(a)), a...)
func Log(ctx context.Context, lvl level.LEVEL, a ...interface{}) {
logf(ctx, 3, lvl, nil, args(len(a)), a...)
}
// Logf will log format string as 'msg' field to the log at given level.
func Logf(lvl level.LEVEL, s string, a ...interface{}) {
logf(3, lvl, nil, s, a...)
func Logf(ctx context.Context, lvl level.LEVEL, s string, a ...interface{}) {
logf(ctx, 3, lvl, nil, s, a...)
}
// Print will log formatted args to the stdout log output.
@ -186,7 +199,7 @@ func printf(depth int, fields []kv.Field, s string, a ...interface{}) {
putBuf(buf)
}
func logf(depth int, lvl level.LEVEL, fields []kv.Field, s string, a ...interface{}) {
func logf(ctx context.Context, depth int, lvl level.LEVEL, fields []kv.Field, s string, a ...interface{}) {
var out *os.File
// Check if enabled.
@ -220,6 +233,13 @@ func logf(depth int, lvl level.LEVEL, fields []kv.Field, s string, a ...interfac
buf.B = append(buf.B, lvlstrs[lvl]...)
buf.B = append(buf.B, ' ')
if ctx != nil {
// Pass context through hooks.
for _, hook := range ctxhooks {
fields = hook(ctx, fields)
}
}
// Append formatted fields with msg
kv.Fields(append(fields, kv.Field{
K: "msg", V: fmt.Sprintf(s, a...),