83 lines
2.6 KiB
Go
83 lines
2.6 KiB
Go
// Licensed to Elasticsearch B.V. under one or more contributor
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// license agreements. See the NOTICE file distributed with
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// this work for additional information regarding copyright
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// ownership. Elasticsearch B.V. licenses this file to you under
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// the Apache License, Version 2.0 (the "License"); you may
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// not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing,
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// software distributed under the License is distributed on an
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// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations
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// under the License.
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package logp
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import (
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"go.uber.org/zap/zapcore"
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)
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type selectiveCore struct {
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allSelectors bool
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selectors map[string]struct{}
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core zapcore.Core
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}
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func selectiveWrapper(core zapcore.Core, selectors map[string]struct{}) zapcore.Core {
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if len(selectors) == 0 {
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return core
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}
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_, allSelectors := selectors["*"]
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return &selectiveCore{selectors: selectors, core: core, allSelectors: allSelectors}
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}
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// Enabled returns whether a given logging level is enabled when logging a
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// message.
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func (c *selectiveCore) Enabled(level zapcore.Level) bool {
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return c.core.Enabled(level)
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}
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// With adds structured context to the Core.
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func (c *selectiveCore) With(fields []zapcore.Field) zapcore.Core {
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return selectiveWrapper(c.core.With(fields), c.selectors)
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}
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// Check determines whether the supplied Entry should be logged (using the
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// embedded LevelEnabler and possibly some extra logic). If the entry
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// should be logged, the Core adds itself to the CheckedEntry and returns
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// the result.
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//
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// Callers must use Check before calling Write.
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func (c *selectiveCore) Check(ent zapcore.Entry, ce *zapcore.CheckedEntry) *zapcore.CheckedEntry {
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if c.Enabled(ent.Level) {
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if ent.Level == zapcore.DebugLevel {
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if c.allSelectors {
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return ce.AddCore(ent, c)
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} else if _, enabled := c.selectors[ent.LoggerName]; enabled {
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return ce.AddCore(ent, c)
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}
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return ce
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}
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return ce.AddCore(ent, c)
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}
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return ce
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}
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// Write serializes the Entry and any Fields supplied at the log site and
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// writes them to their destination.
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//
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// If called, Write should always log the Entry and Fields; it should not
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// replicate the logic of Check.
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func (c *selectiveCore) Write(ent zapcore.Entry, fields []zapcore.Field) error {
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return c.core.Write(ent, fields)
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}
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// Sync flushes buffered logs (if any).
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func (c *selectiveCore) Sync() error {
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return c.core.Sync()
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}
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