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Diffstat (limited to '')
-rw-r--r-- | dependencies/pkg/mod/go.uber.org/zap@v1.23.0/writer.go | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/dependencies/pkg/mod/go.uber.org/zap@v1.23.0/writer.go b/dependencies/pkg/mod/go.uber.org/zap@v1.23.0/writer.go new file mode 100644 index 0000000..2c3dbd4 --- /dev/null +++ b/dependencies/pkg/mod/go.uber.org/zap@v1.23.0/writer.go @@ -0,0 +1,98 @@ +// 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 zap + +import ( + "fmt" + "io" + + "go.uber.org/zap/zapcore" + + "go.uber.org/multierr" +) + +// Open is a high-level wrapper that takes a variadic number of URLs, opens or +// creates each of the specified resources, and combines them into a locked +// WriteSyncer. It also returns any error encountered and a function to close +// any opened files. +// +// Passing no URLs returns a no-op WriteSyncer. Zap handles URLs without a +// scheme and URLs with the "file" scheme. Third-party code may register +// factories for other schemes using RegisterSink. +// +// URLs with the "file" scheme must use absolute paths on the local +// filesystem. No user, password, port, fragments, or query parameters are +// allowed, and the hostname must be empty or "localhost". +// +// Since it's common to write logs to the local filesystem, URLs without a +// scheme (e.g., "/var/log/foo.log") are treated as local file paths. Without +// a scheme, the special paths "stdout" and "stderr" are interpreted as +// os.Stdout and os.Stderr. When specified without a scheme, relative file +// paths also work. +func Open(paths ...string) (zapcore.WriteSyncer, func(), error) { + writers, close, err := open(paths) + if err != nil { + return nil, nil, err + } + + writer := CombineWriteSyncers(writers...) + return writer, close, nil +} + +func open(paths []string) ([]zapcore.WriteSyncer, func(), error) { + writers := make([]zapcore.WriteSyncer, 0, len(paths)) + closers := make([]io.Closer, 0, len(paths)) + close := func() { + for _, c := range closers { + c.Close() + } + } + + var openErr error + for _, path := range paths { + sink, err := newSink(path) + if err != nil { + openErr = multierr.Append(openErr, fmt.Errorf("open sink %q: %w", path, err)) + continue + } + writers = append(writers, sink) + closers = append(closers, sink) + } + if openErr != nil { + close() + return nil, nil, openErr + } + + return writers, close, nil +} + +// CombineWriteSyncers is a utility that combines multiple WriteSyncers into a +// single, locked WriteSyncer. If no inputs are supplied, it returns a no-op +// WriteSyncer. +// +// It's provided purely as a convenience; the result is no different from +// using zapcore.NewMultiWriteSyncer and zapcore.Lock individually. +func CombineWriteSyncers(writers ...zapcore.WriteSyncer) zapcore.WriteSyncer { + if len(writers) == 0 { + return zapcore.AddSync(io.Discard) + } + return zapcore.Lock(zapcore.NewMultiWriteSyncer(writers...)) +} |