armada-operator/pkg/runner/log_buffer.go
Ruslan Aliev d557f99c8f Rename internal to pkg to make inner pkgs importable
Other small fixes and improvements included.

Change-Id: I878c4dce66e62e9128cbec658fc98e1ef71e8047
Signed-off-by: Ruslan Aliev <raliev@mirantis.com>
2024-02-07 10:53:52 -06:00

86 lines
1.7 KiB
Go

/*
Copyright 2023.
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 runner
import (
"container/ring"
"fmt"
"strings"
"sync"
"github.com/go-logr/logr"
"helm.sh/helm/v3/pkg/action"
)
const defaultBufferSize = 5
func NewDebugLog(log logr.Logger) action.DebugLog {
return func(format string, v ...interface{}) {
log.Info(fmt.Sprintf(format, v...))
}
}
type LogBuffer struct {
mu sync.Mutex
log action.DebugLog
buffer *ring.Ring
}
func NewLogBuffer(log action.DebugLog, size int) *LogBuffer {
if size <= 0 {
size = defaultBufferSize
}
return &LogBuffer{
log: log,
buffer: ring.New(size),
}
}
func (l *LogBuffer) Log(format string, v ...interface{}) {
l.mu.Lock()
// Filter out duplicate log lines, this happens for example when
// Helm is waiting on workloads to become ready.
msg := fmt.Sprintf(format, v...)
if prev := l.buffer.Prev(); prev.Value != msg {
l.buffer.Value = msg
l.buffer = l.buffer.Next()
}
l.mu.Unlock()
l.log(format, v...)
}
func (l *LogBuffer) Reset() {
l.mu.Lock()
l.buffer = ring.New(l.buffer.Len())
l.mu.Unlock()
}
func (l *LogBuffer) String() string {
var str string
l.mu.Lock()
l.buffer.Do(func(s interface{}) {
if s == nil {
return
}
str += s.(string) + "\n"
})
l.mu.Unlock()
return strings.TrimSpace(str)
}