alias log package to github.com/containerd/log v0.1.0

This "soft" deprecates the package, but keeps the local uses of the package,
which can make backporting this to release-branches easier (we can
still move all uses in those branches as well though).

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

log/context_deprecated.go

@@ -0,0 +1,107 @@
+/*
+   Copyright The containerd 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 log
+
+import (
+	"context"
+
+	"github.com/containerd/log"
+)
+
+// G is a shorthand for [GetLogger].
+var G = log.G
+
+// L is an alias for the standard logger.
+var L = log.L
+
+// Fields type to pass to "WithFields".
+type Fields = log.Fields
+
+// Entry is a logging entry.
+type Entry = log.Entry
+
+// RFC3339NanoFixed is [time.RFC3339Nano] with nanoseconds padded using
+// zeros to ensure the formatted time is always the same number of
+// characters.
+const RFC3339NanoFixed = log.RFC3339NanoFixed
+
+// Level is a logging level.
+type Level = log.Level
+
+// Supported log levels.
+const (
+	// TraceLevel level.
+	TraceLevel Level = log.TraceLevel
+
+	// DebugLevel level.
+	DebugLevel Level = log.DebugLevel
+
+	// InfoLevel level.
+	InfoLevel Level = log.InfoLevel
+
+	// WarnLevel level.
+	WarnLevel Level = log.WarnLevel
+
+	// ErrorLevel level
+	ErrorLevel Level = log.ErrorLevel
+
+	// FatalLevel level.
+	FatalLevel Level = log.FatalLevel
+
+	// PanicLevel level.
+	PanicLevel Level = log.PanicLevel
+)
+
+// SetLevel sets log level globally. It returns an error if the given
+// level is not supported.
+func SetLevel(level string) error {
+	return log.SetLevel(level)
+}
+
+// GetLevel returns the current log level.
+func GetLevel() log.Level {
+	return log.GetLevel()
+}
+
+// OutputFormat specifies a log output format.
+type OutputFormat = log.OutputFormat
+
+// Supported log output formats.
+const (
+	// TextFormat represents the text logging format.
+	TextFormat log.OutputFormat = "text"
+
+	// JSONFormat represents the JSON logging format.
+	JSONFormat log.OutputFormat = "json"
+)
+
+// SetFormat sets the log output format.
+func SetFormat(format OutputFormat) error {
+	return log.SetFormat(format)
+}
+
+// WithLogger returns a new context with the provided logger. Use in
+// combination with logger.WithField(s) for great effect.
+func WithLogger(ctx context.Context, logger *log.Entry) context.Context {
+	return log.WithLogger(ctx, logger)
+}
+
+// GetLogger retrieves the current logger from the context. If no logger is
+// available, the default logger is returned.
+func GetLogger(ctx context.Context) *log.Entry {
+	return log.GetLogger(ctx)
+}