VOL-1867 move simulated olt from voltha-go to voltha-simolt-adapter
Sourced from voltha-go commit 251a11c0ffe60512318a644cd6ce0dc4e12f4018
Change-Id: I8e7ee4da1fed739b3c461917301d2729a79307f5
diff --git a/vendor/go.uber.org/zap/zapcore/core.go b/vendor/go.uber.org/zap/zapcore/core.go
new file mode 100644
index 0000000..a1ef8b0
--- /dev/null
+++ b/vendor/go.uber.org/zap/zapcore/core.go
@@ -0,0 +1,113 @@
+// Copyright (c) 2016 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 zapcore
+
+// Core is a minimal, fast logger interface. It's designed for library authors
+// to wrap in a more user-friendly API.
+type Core interface {
+ LevelEnabler
+
+ // With adds structured context to the Core.
+ With([]Field) Core
+ // Check determines whether the supplied Entry should be logged (using the
+ // embedded LevelEnabler and possibly some extra logic). If the entry
+ // should be logged, the Core adds itself to the CheckedEntry and returns
+ // the result.
+ //
+ // Callers must use Check before calling Write.
+ Check(Entry, *CheckedEntry) *CheckedEntry
+ // Write serializes the Entry and any Fields supplied at the log site and
+ // writes them to their destination.
+ //
+ // If called, Write should always log the Entry and Fields; it should not
+ // replicate the logic of Check.
+ Write(Entry, []Field) error
+ // Sync flushes buffered logs (if any).
+ Sync() error
+}
+
+type nopCore struct{}
+
+// NewNopCore returns a no-op Core.
+func NewNopCore() Core { return nopCore{} }
+func (nopCore) Enabled(Level) bool { return false }
+func (n nopCore) With([]Field) Core { return n }
+func (nopCore) Check(_ Entry, ce *CheckedEntry) *CheckedEntry { return ce }
+func (nopCore) Write(Entry, []Field) error { return nil }
+func (nopCore) Sync() error { return nil }
+
+// NewCore creates a Core that writes logs to a WriteSyncer.
+func NewCore(enc Encoder, ws WriteSyncer, enab LevelEnabler) Core {
+ return &ioCore{
+ LevelEnabler: enab,
+ enc: enc,
+ out: ws,
+ }
+}
+
+type ioCore struct {
+ LevelEnabler
+ enc Encoder
+ out WriteSyncer
+}
+
+func (c *ioCore) With(fields []Field) Core {
+ clone := c.clone()
+ addFields(clone.enc, fields)
+ return clone
+}
+
+func (c *ioCore) Check(ent Entry, ce *CheckedEntry) *CheckedEntry {
+ if c.Enabled(ent.Level) {
+ return ce.AddCore(ent, c)
+ }
+ return ce
+}
+
+func (c *ioCore) Write(ent Entry, fields []Field) error {
+ buf, err := c.enc.EncodeEntry(ent, fields)
+ if err != nil {
+ return err
+ }
+ _, err = c.out.Write(buf.Bytes())
+ buf.Free()
+ if err != nil {
+ return err
+ }
+ if ent.Level > ErrorLevel {
+ // Since we may be crashing the program, sync the output. Ignore Sync
+ // errors, pending a clean solution to issue #370.
+ c.Sync()
+ }
+ return nil
+}
+
+func (c *ioCore) Sync() error {
+ return c.out.Sync()
+}
+
+func (c *ioCore) clone() *ioCore {
+ return &ioCore{
+ LevelEnabler: c.LevelEnabler,
+ enc: c.enc.Clone(),
+ out: c.out,
+ }
+}