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helm/pkg/kube/logger.go

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2.1 KiB

/*
Copyright The Helm Authors.
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 kube provides Kubernetes client utilities for Helm.
package kube
import "log/slog"
// Logger defines a minimal logging interface compatible with structured logging.
// It provides methods for different log levels with structured key-value pairs.
type Logger interface {
// Debug logs a message at debug level with structured key-value pairs.
Debug(msg string, args ...any)
// Warn logs a message at warning level with structured key-value pairs.
Warn(msg string, args ...any)
}
// NopLogger is a logger implementation that discards all log messages.
type NopLogger struct{}
// Debug implements Logger.Debug by doing nothing.
func (NopLogger) Debug(msg string, args ...any) {}
// Warn implements Logger.Warn by doing nothing.
func (NopLogger) Warn(msg string, args ...any) {}
// DefaultLogger provides a no-op logger that discards all messages.
// It can be used as a default when no logger is provided.
var DefaultLogger Logger = NopLogger{}
// SlogAdapter adapts a standard library slog.Logger to the Logger interface.
type SlogAdapter struct {
logger *slog.Logger
}
// Debug implements Logger.Debug by forwarding to the underlying slog.Logger.
func (a SlogAdapter) Debug(msg string, args ...any) {
a.logger.Debug(msg, args...)
}
// Warn implements Logger.Warn by forwarding to the underlying slog.Logger.
func (a SlogAdapter) Warn(msg string, args ...any) {
a.logger.Warn(msg, args...)
}
// NewSlogAdapter creates a Logger that forwards log messages to a slog.Logger.
func NewSlogAdapter(logger *slog.Logger) Logger {
if logger == nil {
return DefaultLogger
}
return SlogAdapter{logger: logger}
}