diff options
Diffstat (limited to 'vendor/go.opentelemetry.io/otel/internal/global/handler.go')
| -rw-r--r-- | vendor/go.opentelemetry.io/otel/internal/global/handler.go | 84 |
1 files changed, 9 insertions, 75 deletions
diff --git a/vendor/go.opentelemetry.io/otel/internal/global/handler.go b/vendor/go.opentelemetry.io/otel/internal/global/handler.go index 5e9b83047..c657ff8e7 100644 --- a/vendor/go.opentelemetry.io/otel/internal/global/handler.go +++ b/vendor/go.opentelemetry.io/otel/internal/global/handler.go @@ -1,38 +1,13 @@ // Copyright The OpenTelemetry Authors -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. +// SPDX-License-Identifier: Apache-2.0 package global // import "go.opentelemetry.io/otel/internal/global" import ( "log" - "os" "sync/atomic" ) -var ( - // GlobalErrorHandler provides an ErrorHandler that can be used - // throughout an OpenTelemetry instrumented project. When a user - // specified ErrorHandler is registered (`SetErrorHandler`) all calls to - // `Handle` and will be delegated to the registered ErrorHandler. - GlobalErrorHandler = defaultErrorHandler() - - // Compile-time check that delegator implements ErrorHandler. - _ ErrorHandler = (*ErrDelegator)(nil) - // Compile-time check that errLogger implements ErrorHandler. - _ ErrorHandler = (*ErrLogger)(nil) -) - // ErrorHandler handles irremediable events. type ErrorHandler interface { // Handle handles any error deemed irremediable by an OpenTelemetry @@ -44,59 +19,18 @@ type ErrDelegator struct { delegate atomic.Pointer[ErrorHandler] } -func (d *ErrDelegator) Handle(err error) { - d.getDelegate().Handle(err) -} +// Compile-time check that delegator implements ErrorHandler. +var _ ErrorHandler = (*ErrDelegator)(nil) -func (d *ErrDelegator) getDelegate() ErrorHandler { - return *d.delegate.Load() +func (d *ErrDelegator) Handle(err error) { + if eh := d.delegate.Load(); eh != nil { + (*eh).Handle(err) + return + } + log.Print(err) } // setDelegate sets the ErrorHandler delegate. func (d *ErrDelegator) setDelegate(eh ErrorHandler) { d.delegate.Store(&eh) } - -func defaultErrorHandler() *ErrDelegator { - d := &ErrDelegator{} - d.setDelegate(&ErrLogger{l: log.New(os.Stderr, "", log.LstdFlags)}) - return d -} - -// ErrLogger logs errors if no delegate is set, otherwise they are delegated. -type ErrLogger struct { - l *log.Logger -} - -// Handle logs err if no delegate is set, otherwise it is delegated. -func (h *ErrLogger) Handle(err error) { - h.l.Print(err) -} - -// GetErrorHandler returns the global ErrorHandler instance. -// -// The default ErrorHandler instance returned will log all errors to STDERR -// until an override ErrorHandler is set with SetErrorHandler. All -// ErrorHandler returned prior to this will automatically forward errors to -// the set instance instead of logging. -// -// Subsequent calls to SetErrorHandler after the first will not forward errors -// to the new ErrorHandler for prior returned instances. -func GetErrorHandler() ErrorHandler { - return GlobalErrorHandler -} - -// SetErrorHandler sets the global ErrorHandler to h. -// -// The first time this is called all ErrorHandler previously returned from -// GetErrorHandler will send errors to h instead of the default logging -// ErrorHandler. Subsequent calls will set the global ErrorHandler, but not -// delegate errors to h. -func SetErrorHandler(h ErrorHandler) { - GlobalErrorHandler.setDelegate(h) -} - -// Handle is a convenience function for ErrorHandler().Handle(err). -func Handle(err error) { - GetErrorHandler().Handle(err) -} |