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moby--moby/daemon/logger/jsonfilelog/jsonlog/jsonlog.go
Brian Goff 933a87236f Reduce allocations for logfile reader
Before this change, the log decoder function provided by the log driver
to logfile would not be able to re-use buffers, causing undeeded
allocations and memory bloat for dockerd.

This change introduces an interface that allows the log driver to manage
it's memory usge more effectively.
This only affects json-file and local log drivers.

`json-file` still is not great just because of how the json decoder in the
stdlib works.
`local` is significantly improved.

Signed-off-by: Brian Goff <cpuguy83@gmail.com>
2020-04-08 12:24:31 -07:00

27 lines
713 B
Go

package jsonlog // import "github.com/docker/docker/daemon/logger/jsonfilelog/jsonlog"
import (
"time"
)
// JSONLog is a log message, typically a single entry from a given log stream.
type JSONLog struct {
// Log is the log message
Log string `json:"log,omitempty"`
// Stream is the log source
Stream string `json:"stream,omitempty"`
// Created is the created timestamp of log
Created time.Time `json:"time"`
// Attrs is the list of extra attributes provided by the user
Attrs map[string]string `json:"attrs,omitempty"`
}
// Reset all fields to their zero value.
func (jl *JSONLog) Reset() {
jl.Log = ""
jl.Stream = ""
jl.Created = time.Time{}
for k := range jl.Attrs {
delete(jl.Attrs, k)
}
}