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Diffstat (limited to '')
-rw-r--r-- | dependencies/pkg/mod/go.uber.org/zap@v1.23.0/zaptest/observer/observer.go | 196 |
1 files changed, 196 insertions, 0 deletions
diff --git a/dependencies/pkg/mod/go.uber.org/zap@v1.23.0/zaptest/observer/observer.go b/dependencies/pkg/mod/go.uber.org/zap@v1.23.0/zaptest/observer/observer.go new file mode 100644 index 0000000..f77f130 --- /dev/null +++ b/dependencies/pkg/mod/go.uber.org/zap@v1.23.0/zaptest/observer/observer.go @@ -0,0 +1,196 @@ +// Copyright (c) 2016-2022 Uber Technologies, Inc. +// +// Permission is hereby granted, free of charge, to any person obtaining a copy +// of this software and associated documentation files (the "Software"), to deal +// in the Software without restriction, including without limitation the rights +// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +// copies of the Software, and to permit persons to whom the Software is +// furnished to do so, subject to the following conditions: +// +// The above copyright notice and this permission notice shall be included in +// all copies or substantial portions of the Software. +// +// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN +// THE SOFTWARE. + +// Package observer provides a zapcore.Core that keeps an in-memory, +// encoding-agnostic representation of log entries. It's useful for +// applications that want to unit test their log output without tying their +// tests to a particular output encoding. +package observer // import "go.uber.org/zap/zaptest/observer" + +import ( + "strings" + "sync" + "time" + + "go.uber.org/zap/internal" + "go.uber.org/zap/zapcore" +) + +// ObservedLogs is a concurrency-safe, ordered collection of observed logs. +type ObservedLogs struct { + mu sync.RWMutex + logs []LoggedEntry +} + +// Len returns the number of items in the collection. +func (o *ObservedLogs) Len() int { + o.mu.RLock() + n := len(o.logs) + o.mu.RUnlock() + return n +} + +// All returns a copy of all the observed logs. +func (o *ObservedLogs) All() []LoggedEntry { + o.mu.RLock() + ret := make([]LoggedEntry, len(o.logs)) + copy(ret, o.logs) + o.mu.RUnlock() + return ret +} + +// TakeAll returns a copy of all the observed logs, and truncates the observed +// slice. +func (o *ObservedLogs) TakeAll() []LoggedEntry { + o.mu.Lock() + ret := o.logs + o.logs = nil + o.mu.Unlock() + return ret +} + +// AllUntimed returns a copy of all the observed logs, but overwrites the +// observed timestamps with time.Time's zero value. This is useful when making +// assertions in tests. +func (o *ObservedLogs) AllUntimed() []LoggedEntry { + ret := o.All() + for i := range ret { + ret[i].Time = time.Time{} + } + return ret +} + +// FilterLevelExact filters entries to those logged at exactly the given level. +func (o *ObservedLogs) FilterLevelExact(level zapcore.Level) *ObservedLogs { + return o.Filter(func(e LoggedEntry) bool { + return e.Level == level + }) +} + +// FilterMessage filters entries to those that have the specified message. +func (o *ObservedLogs) FilterMessage(msg string) *ObservedLogs { + return o.Filter(func(e LoggedEntry) bool { + return e.Message == msg + }) +} + +// FilterMessageSnippet filters entries to those that have a message containing the specified snippet. +func (o *ObservedLogs) FilterMessageSnippet(snippet string) *ObservedLogs { + return o.Filter(func(e LoggedEntry) bool { + return strings.Contains(e.Message, snippet) + }) +} + +// FilterField filters entries to those that have the specified field. +func (o *ObservedLogs) FilterField(field zapcore.Field) *ObservedLogs { + return o.Filter(func(e LoggedEntry) bool { + for _, ctxField := range e.Context { + if ctxField.Equals(field) { + return true + } + } + return false + }) +} + +// FilterFieldKey filters entries to those that have the specified key. +func (o *ObservedLogs) FilterFieldKey(key string) *ObservedLogs { + return o.Filter(func(e LoggedEntry) bool { + for _, ctxField := range e.Context { + if ctxField.Key == key { + return true + } + } + return false + }) +} + +// Filter returns a copy of this ObservedLogs containing only those entries +// for which the provided function returns true. +func (o *ObservedLogs) Filter(keep func(LoggedEntry) bool) *ObservedLogs { + o.mu.RLock() + defer o.mu.RUnlock() + + var filtered []LoggedEntry + for _, entry := range o.logs { + if keep(entry) { + filtered = append(filtered, entry) + } + } + return &ObservedLogs{logs: filtered} +} + +func (o *ObservedLogs) add(log LoggedEntry) { + o.mu.Lock() + o.logs = append(o.logs, log) + o.mu.Unlock() +} + +// New creates a new Core that buffers logs in memory (without any encoding). +// It's particularly useful in tests. +func New(enab zapcore.LevelEnabler) (zapcore.Core, *ObservedLogs) { + ol := &ObservedLogs{} + return &contextObserver{ + LevelEnabler: enab, + logs: ol, + }, ol +} + +type contextObserver struct { + zapcore.LevelEnabler + logs *ObservedLogs + context []zapcore.Field +} + +var ( + _ zapcore.Core = (*contextObserver)(nil) + _ internal.LeveledEnabler = (*contextObserver)(nil) +) + +func (co *contextObserver) Level() zapcore.Level { + return zapcore.LevelOf(co.LevelEnabler) +} + +func (co *contextObserver) Check(ent zapcore.Entry, ce *zapcore.CheckedEntry) *zapcore.CheckedEntry { + if co.Enabled(ent.Level) { + return ce.AddCore(ent, co) + } + return ce +} + +func (co *contextObserver) With(fields []zapcore.Field) zapcore.Core { + return &contextObserver{ + LevelEnabler: co.LevelEnabler, + logs: co.logs, + context: append(co.context[:len(co.context):len(co.context)], fields...), + } +} + +func (co *contextObserver) Write(ent zapcore.Entry, fields []zapcore.Field) error { + all := make([]zapcore.Field, 0, len(fields)+len(co.context)) + all = append(all, co.context...) + all = append(all, fields...) + co.logs.add(LoggedEntry{ent, all}) + return nil +} + +func (co *contextObserver) Sync() error { + return nil +} |