mirror of
https://github.com/minio/minio.git
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2aa18cafc6
With CoreDNS now supporting etcdv3 as the DNS backend, we can update our federation target to etcdv3. Users will now be able to use etcdv3 server as the federation backbone. Minio will update bucket data to etcdv3 and CoreDNS can pick that data up and serve it as bucket style DNS path.
95 lines
2.7 KiB
Go
95 lines
2.7 KiB
Go
// Copyright (c) 2016 Uber Technologies, Inc.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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package zap
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import (
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"errors"
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"fmt"
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"io"
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"os"
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"sync"
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"go.uber.org/zap/zapcore"
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)
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var (
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_sinkMutex sync.RWMutex
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_sinkFactories map[string]func() (Sink, error)
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)
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func init() {
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resetSinkRegistry()
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}
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func resetSinkRegistry() {
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_sinkMutex.Lock()
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defer _sinkMutex.Unlock()
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_sinkFactories = map[string]func() (Sink, error){
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"stdout": func() (Sink, error) { return nopCloserSink{os.Stdout}, nil },
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"stderr": func() (Sink, error) { return nopCloserSink{os.Stderr}, nil },
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}
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}
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type errSinkNotFound struct {
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key string
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}
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func (e *errSinkNotFound) Error() string {
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return fmt.Sprintf("no sink found for %q", e.key)
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}
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// Sink defines the interface to write to and close logger destinations.
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type Sink interface {
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zapcore.WriteSyncer
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io.Closer
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}
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// RegisterSink adds a Sink at the given key so it can be referenced
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// in config OutputPaths.
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func RegisterSink(key string, sinkFactory func() (Sink, error)) error {
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_sinkMutex.Lock()
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defer _sinkMutex.Unlock()
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if key == "" {
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return errors.New("sink key cannot be blank")
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}
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if _, ok := _sinkFactories[key]; ok {
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return fmt.Errorf("sink already registered for key %q", key)
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}
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_sinkFactories[key] = sinkFactory
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return nil
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}
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// newSink invokes the registered sink factory to create and return the
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// sink for the given key. Returns errSinkNotFound if the key cannot be found.
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func newSink(key string) (Sink, error) {
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_sinkMutex.RLock()
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defer _sinkMutex.RUnlock()
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sinkFactory, ok := _sinkFactories[key]
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if !ok {
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return nil, &errSinkNotFound{key}
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}
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return sinkFactory()
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}
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type nopCloserSink struct{ zapcore.WriteSyncer }
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func (nopCloserSink) Close() error { return nil }
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